2020, The Japan Society of Seismic Isolation, The 20th Prizes of the Japan Society of Seismic Isolation, ENGINEERING AWARD　　　　　　　　　　　　　　　
巨大地震に対するフェイルセーフ機構を有するアイソレータ「QTB」の開発
濱口弘樹;山本俊司;和氣知貴;石井建;菊地優

Oct. 2019, 大成学術財団選奨, 金賞（論文）　　　　　　　　　　　　　　　
高摩擦すべり支承の熱・力学連成挙動解析システムの開
菊地優

2015, Architectural Institute of Japan, AIJ Prize　　　　　　　　　　　　　　　
Research on improved seismic response analysis methods for seismically-isolated structures
Masaru Kikuchi

2010, 日本機械学会動力エネルギーシステム部門貢献表彰　　　　　　　　　　　　　　　
Japan

2005, The Japan Society of Seismic Isolation, The 20th Prizes of the Japan Society of Seismic Isolation, ENGINEERING AWARD　　　　　　　　　　　　　　　
履歴減衰型免震部材の統一的復元力モデルの開発
菊地優;山本祥江;北村佳久;猿田正明;田村和夫, Japan

VIBRATION CHARACTERISTICS OF DISPLACEMENT CONTROL SYSTEM COMBINING QUASI-ZERO STIFFNESS AND INERTER
Jun IBA, Koichi WATANABE, Kou MIYAMOTO, Ken ISHII, Masaru KIKUCHI
Journal of Structural and Construction Engineering (Transactions of AIJ), 89, 821, 708, 718, Architectural Institute of Japan, 01 Jul. 2024
Scientific journal

PARETO FRONT OF DEMAND SPECTRA NORMALIZED BY GROUND MOTION FOR SINUSOIDAL RESPONSES OF SDOF SYSTEMS
Ken ISHII, Masaru KIKUCHI
Journal of Structural and Construction Engineering (Transactions of AIJ), 89, 816, 140, 147, Architectural Institute of Japan, 01 Feb. 2024
Scientific journal

LOADING TEST AND ANALYSIS METHOD FOR COMBINED EVALUATION OF VELOCITY AND TEMPERATURE DEPENDENCIES ON MECHANICAL PROPERTIES OF SLIDING BEARINGS
Ken ISHII, Masaru KIKUCHI, Yuta IRISAWA, Tomotaka WAKE
Journal of Structural and Construction Engineering (Transactions of AIJ), 88, 814, 1646, 1654, Architectural Institute of Japan, 01 Dec. 2023
Scientific journal

Development of Nonlinear Geometric Seismic Isolation with a Duffing Spring
Kou Miyamoto, Jun Iba, Koichi Watanabe, Ken Ishii, Masaru Kikuchi
Structural Control and Health Monitoring, 2023, 1, 24, Hindawi Limited, 23 Mar. 2023
Scientific journal, Seismic isolation is widely used in several countries, and the number of seismically isolated buildings has increased rapidly in recent decades. Seismic isolation extends the natural period of a building to decrease the absolute acceleration and seismic force. As there is a trade-off between the absolute acceleration and displacement, a soft layer results in a large displacement for a large seismic wave, but the hard one causes the large absolute acceleration even for a small seismic wave. The restoring force of a Duffing spring is given by the third and first orders of the displacement. This spring has been applied to protect a building from large earthquake waves. However, the influence of the coefficient of the Duffing spring that determines the dynamic characteristics of the system has not been clarified. Thus, a used Duffing spring may not be appropriate for seismic resistance. Moreover, most studies are based on analytical methods, and the advantages of the Duffing isolation have not been verified in an actual system. To address these problems, this paper reveals the influence of the coefficient of the Duffing spring on structural responses to seismic waves. Moreover, this paper devised a way to implement a Duffing spring for seismic isolation and carried out experiments to verify the validity in actual systems. The experimental results presented that the Duffing spring was effective in protecting a building in actual systems.

DISPLACEMENT CONTROL SYSTEM FOR SEISMIC ISOLATION ON FULL-SCALE DISPLACEMENT EQUIPPED WITH HSLDS AND ROTATIONAL INERTIA
Jun IBA, Koichi WATANABE, Kou MIYAMOTO, Ken ISHII, Masaru KIKUCHI
Journal of Structural and Construction Engineering (Transactions of AIJ), 88, 805, 426, 436, Architectural Institute of Japan, 01 Mar. 2023
Scientific journal

硬化型復元力と回転慣性質量を組み合わせた実大変位スケールの変位抑制型免震構造に関する研究　　　　　　　　　　　　　　　
射場 淳, 渡辺 宏一, 宮本 皓, 石井 建, 菊地 優
日本建築学会構造系論文集, 88, 805, 426, 436, Mar. 2023, [Peer-reviewed]
Japanese, Scientific journal

鉛入り積層ゴムの熱・力学的連成挙動を考慮した免震建物の地震時応答評価に関する研究　　　　　　　　　　　　　　　
近藤 明洋, 菊地 優
日本建築学会構造系論文集, 88, 804, 211, 222, Mar. 2023, [Peer-reviewed]
Japanese, Scientific journal

THERMAL-MECHANICAL COUPLED BEHAVIOR OF TIN RUBBER SEISMIC ISOLATION BEARINGS
Masayuki YANAGI, Miyuki SHIMIZU, Hidenori KIDA, Hiroki NAGAI, Ken ISHII, Masaru KIKUCHI
Journal of Structural and Construction Engineering (Transactions of AIJ), 87, 802, 1142, 1151, Architectural Institute of Japan, 01 Dec. 2022
Scientific journal

錫プラグ入り免震積層ゴムの熱・力学連成挙動に関する研究　　　　　　　　　　　　　　　
柳勝幸, 清水美雪, 木田英範, 長井大樹, 石井建, 菊地優
日本建築学会構造系論文集, 87, 802, 1142, 1151, Dec. 2022, [Peer-reviewed]
Japanese, Scientific journal

Seismic response control effects for reinforced-concrete buildings incorporating a passive variable friction device
Kazutaka SHIRAI, Tomoaki ITO, Masaru KIKUCHI
Journal of Building Engineering, 62, 105388, Dec. 2022, [Peer-reviewed], [International Magazine]
English, Scientific journal

A seismic mass damper system using scrap tire pads: Loading tests on mechanical properties and numerical assessment of the response control effects
Jihyun PARK, Kazutaka SHIRAI, Masaru KIKUCHI
Soil Dynamics and Earthquake Engineering, 157, 107257, Jun. 2022, [Peer-reviewed], [International Magazine]
English, Scientific journal

大振幅地震動に対するオイルダンパーの繰り返し依存性を考慮した時刻歴応答解析に関する研究　　　　　　　　　　　　　　　
荻野伸行, 石井建, 菊地優, 岡本真成, 中原学
構造工学論文集, 68B, 376, 385, Mar. 2022, [Peer-reviewed]
Japanese, Scientific journal

TIME HISTORY RESPONSE ANALYSIS CONSIDERING REPEATED DEFORMATION DEPENDENCE OF THE OIL DAMPER UNDER EXTREMELY STRONG EARTHQUAKE GROUND MOTIONS
Nobuyuki OGINO, Ken ISHII, Masaru KIKUCHI, Masanari OKAMOTO
Journal of Structural Engineering B, 68B, 376, 385, Architectural Institute of Japan, 2022
Scientific journal

Scale Effect on Mechanical Behavior of Lead Rubber Bearings for Seismic Isolation
Masaru Kikuchi, Mineo Takayama
17th World Conference on Earthquake Engineering, Sep. 2021
English, International conference proceedings, 13485088

Evaluation of effective seismic energy input rates based on long-term earthquake observation recoreds　　　　　　　　　　　　　　　
Ken Ishii, Masaru Kikuchi, Masanori Iiba, Toshihide Kashima
17th World Conference on Earthquake Engineering, Sep. 2021
English, International conference proceedings

An Analytical Model for Tin Rubber Bearings Under Large Shear Deformations
Masayuki Yanagi, Miyuki Shimizu, Yuto Kobashi, Akira Yasunaga, Masaru Kikuchi
17th World Conference on Earthquake Engineering, Sep. 2021
English, International conference proceedings, 13485088

Thermal-Mechanical Coupled Analysis Model for Matrix Sliding Bearings
Masaru Kikuchi, Ken Ishii, Takahisa Mori, Ryotaro Kurosawa, Hiroshi Sugiyama, Takahiro Koizumi
17th World Conference on Earthquake Engineering, Sep. 2021, [Lead author]
English, International conference proceedings, 13485088

大振幅地震動に対する免震用多段速度依存型可変減衰オイルダンパーに関する研究
荻野伸行, 菊地優, 岡本真成, 中原学
構造工学論文集, 67B, 549, 556, Mar. 2021, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 13485088

硬化型復元力と回転慣性質量を組み合わせた変位抑制型免震構造に関する基礎的研究
射場淳, 渡辺宏一, 石井建, 菊地優
構造工学論文集, 67B, 539, 548, Mar. 2021, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 13485088

錫プラグ入り免震積層ゴムの大変形復元力モデルに関する研究
柳勝幸, 清水美雪, 齊木健司, 安永亮, 菊地優
構造工学論文集, 67B, 519, 529, Mar. 2021, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 13485088

鉛プラグ入り積層ゴム支承の減衰材分散配置による熱力学特性の改善効果
和氣知貴, 菊地優, 石井建
日本建築学会構造系論文集, 84, 763, 1187, 1197, Sep. 2019, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 11047912

A Seismic Isolation System with High Safety Margin in Earthquakes Exceeding Design Level
Hiroki Hamaguchi, Shunji Yamamoto, Wake Tomotaka, Masaru Kikuchi
16th World Conference on Seismic Isolation, Energy Dissipation and Regulation of Dynamic Characteristics of Structures, Saint-Petersburg, Russia, Jul. 2019, [International Magazine]
English, International conference proceedings, 11047912

High-performance Oil Dampers for Seismically Isolated Structures to Counter Extremely Strong Earthquake Ground Motions
Nobuyuki Ogino, Masaru Kikuchi, Masanari Okamoto
16th World Conference on Seismic Isolation, Energy Dissipation and Regulation of Dynamic Characteristics of Structures, Saint-Petersburg, Russia, Jul. 2019, [International Magazine]
English, International conference proceedings, 11047912

New Evaluation Formulae for Shear Strength of Lead-Rubber Bearings
Wake Tomotaka, Masaru Kikuchi, Ken Ishii
16th World Conference on Seismic Isolation, Energy Dissipation and Regulation of Dynamic Characteristics of Structures, Saint-Petersburg, Russia, Jul. 2019, [International Magazine]
English, International conference proceedings, 11047912

An Analytical Model for Low-shear Modulus High-damping Rubber Isolation Bearings under Large Shear Deformation
Masaru Kikuchi, Ken Ishii, Hideaki Kato, Masahiro Nakamura
16th World Conference on Seismic Isolation, Energy Dissipation and Regulation of Dynamic Characteristics of Structures, Saint-Petersburg, Russia, Jul. 2019, [Lead author], [International Magazine]
English, International conference proceedings, 11047912

Mechanical behavior of sliding bearings for seismic isolation under cyclic loading
Ken Ishii, Masaru Kikuchi
16th World Conference on Seismic Isolation, Energy Dissipation and Regulation of Dynamic Characteristics of Structures, Saint-Petersburg, Russia, Jul. 2019, [International Magazine]
English, International conference proceedings, 11047912

Practical application of lead rubber bearings with fail-safe mechanism
Hiroki Hamaguchi, Tomotaka, Wake, Masashi Yamamoto, Masaru Kikuchi
Japan Artchitectural Review, 2, 3, 323, 339, Jul. 2019, [Peer-reviewed], [International Magazine]
English, Scientific journal, 11047912

An Advanced Hysteresis Model of High-Damping Rubber Bearings for Seismic Isolation
Masaru Kikuchi, Ken Ishii
Proceedings of the 7th Structural Engineers World Congress 2019, Istanbul, Turkey, Apr. 2019, [Lead author], [International Magazine]
English, International conference proceedings, 11047912

Effective Seismic Input Rates for Exsiting Buildings Considering Soil-Structure Interaction　　　　　　　　　　　　　　　
Ken Ishii, Masaru Kikuchi, Jun Yoshida
Proceedings of the 7th Structural Engineers World Congress 2019, Istanbul, Turkey, Apr. 2019, [International Magazine]
English, International conference proceedings

Improved thermo-dynamic behavior of lead-rubber isolation bearings due to distributed lead-core configurations
Tomotaka Wake, Ken Ishii, Masaru Kikuchi
Journal of Structural and Construction Engineering, 84, 763, 1187, 1197, Architectural Institute of Japan, 2019
English, Scientific journal, To clarify the effectiveness of the distributed lead-core configurations of LRB, real-scale dynamic loading experiments and heat-mechanics interaction analysis were carried out. Experiments and analyses revealed that the energy absorption performance tends to decline as the diameter of the lead core becomes larger, and that the multi-core LRB effectively restrains such decline in performance. In order to analyze a multi-core LRB, it is necessary to use a three-dimensional model, but this study reveals that analysis by CFS or FDM with a two-dimensional model is sufficiently accurate and is more conveniently.

Improved numerical analysis for ultimate behavior of elastomeric seismic isolation bearings
Ken Ishii, Masaru Kikuchi
Earthquake Engineering & Structural Dynamics, 48, 1, 65, 77, Wiley, Jan. 2019, [Peer-reviewed], [International Magazine]
Scientific journal, 11047912

A new evaluation method for yielding force of lead rubber bearings under cyclic loading
Tomotaka Wake, Masaru Kikuchi, Ken Ishii, Yohei Kuroshima, Takahito Nakamura
Journal of Structural and Construction Engineering, 83, 750, 1105, 1115, Architectural Institute of Japan, 01 Aug. 2018
English, Scientific journal, The purpose of this study is to clarify strength degradation in LRB in the event of a long-duration earthquake. Obtained from studying cyclic loading tests provide the following conclusions. [1] The strain, strain rate and temperature dependency of the intercept force obtained from rubber bearing (RB) tests were clarified, and equations were proposed. [2] By subtracting the RB intercept force from the yielding force of the LRB, the relationship between temperature and yielding stress of lead plug was obtained, and equations were proposed. [3] The proposed equations could successfully predict the mechanical behavior and the change of temperature of LRB.

Thermal-Mechanical Coupled Behavior of Sliding Bearings for Seismic Isolation
Masaru Kikuchi, Ken Ishii
1st International Conference on Numerical Modelling in Engineering, Ghent, Belgium, Aug. 2018, [Lead author], [International Magazine]
English, International conference proceedings, 11819613

繰り返し加力を受ける鉛プラグ入り積層ゴム支承の降伏荷重評価法に関する研究
和氣知貴, 菊地優, 石井建, 黒嶋洋平, 仲村崇仁
日本建築学会構造系論文集, 83, 750, 1105, 1115, Aug. 2018, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 11047912

AN EXPERIMENTAL STUDY ON PRACTICAL USE OF A LEAD RUBBER BEARING WITH FAIL-SAFE MECHANISM
HAMAGUCHI Hiroki, WAKE Tomotaka, YAMAMOTO Masashi, KIKUCHI Masaru
Journal of Structural and Construction Engineering (Transactions of AIJ), 83, 749, 1009, 1019, Architectural Institute of Japan, Jul. 2018, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, The authors have been developing a new seismic isolation bearing, which consists of a lead rubber bearing (LRB) and a slider bearing as a fail-safe (FS) mechanism in series. The bearing called “FSLRB” behaves as a general LRB which is just friction connected to the building structure at either of upper or lower end, when subjected to design level earthquakes or smaller, while the sliding behavior keeps LRB away from giving excessive hardening and shear break in severe earthquakes beyond expectations. Hence, FSLRB has much higher seismic safety compared to general isolation bearings including conventional LRBs. In this paper, dynamic and quasi-static horizontal loading tests under constant or varying compressive loadings for several kinds of scaled and full-scale FSLRB specimens are conducted, to evaluate the effect of bi-directional excitations on additional torsion in the LRB part and changes in friction properties in the slider part. Ultimate performance limit of a full-scale bearing is also investigated under extremely high surface pressures beyond expectations.
 Dynamic loading tests of two types of □-200mm scaled specimens, each has different second shape factor in the LRB part, make clear that there is no apparent difference in friction properties between uni-directional and bi-directional excitations, and no damage to the LRB part due to the torsional behavior in bi-directional excitation, as far as the bearing is applied under a reasonable surface pressure around 10 N/mm². Bi-directional dynamic loading tests of a □-900mm full-scale specimen show that there is no significant scale-effect between the full-scale FSLRB and the □-200mm scaled one on both the torsional behavior of the LRB part and friction properties of the slider part. Uni-directional dynamic loading tests of □-600mm full-scale specimens indicate that dynamic and static friction coefficients have quite low velocity dependence in reasonable sliding speed expected in the practical use. Finally, uni-directional quasi-static loading tests of □-600mm specimens show that the bearing should be applied under surface pressure of 20 N/mm² or lower, to give a well-ordered tri-linear hysteresis curve without causing any unexpected incidents such as partial uplift of the slider part and buckling or shear break of the LRB part.
 Furthermore, surface pressure dependence of dynamic and static friction coefficients are inductively estimated applying all the data obtained in the series of the research, including the test results of □-60mm scaled slider, □-414mm scaled FSLRB and □-900mm full-scale FSLRB introduced in the authors’ preceding paper. The data indicate that both dynamic and static friction coefficients are highly affected by the dimensions of each FSLRB, those are the second shape factor of the LRB part and out-of-plane stiffness of the steel plates between the LRB part and the slider part. By introducing “effective surface pressure” reflecting the effect of the above two dimensions, friction coefficients can be even accurately estimated compared to a conventional method only using mean surface pressure.
 As a conclusion through the series of the loading tests and the considerations mentioned above, the authors think that FSLRB is ready for the practical use in a seismic isolation system with even higher safety margin compared to conventional systems., 11047912

Thermal-Mechanical Coupled Behavior of Elastomeric Isolation Bearings Under Cyclic Loading
Masaru Kikuchi, Ken Ishii
16th European Conference on Earthquake Engineering, Thessaloniki, Greece, Jun. 2018, [Lead author], [International Magazine]
English, International conference proceedings, 11047912

鉛の繰り返し載荷による熱・力学連成挙動評価に関する研究　　　　　　　　　　　　　　　
西村拓也, 熊谷仁志, 菊地優
構造工学論文集, 64B, 333, 344, Mar. 2018, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

Structural characteristics and vibration behaviors on the main hall of Ohtaniha Hakodate Betsuin (1915)
Kazutaka Shirai, Masaru Kikuchi, Ken Ishii, Sadamasa Komaki
AIJ Journal of Technology and Design, 24, 56, 201, 206, Architectural Institute of Japan, 01 Feb. 2018, [Peer-reviewed], [International Magazine]
Japanese, Scientific journal, The main hall of Ohtaniha Hakodatuin, which was completed in 1915, is the oldest temple architecture using reinforced concrete structure in Japan. The temple has been designated as an Important Cultural Property of Japan in 2007. In this paper, structural characteristics of the temple based on previous studies were described. Furthermore, evaluation of vibration behavior of the temple by micro-tremor observation and eigenvalue analysis using numerical 3-D frame models were presented. From the results, natural frequencies of the analytical model with decreased concrete Young's modulus considering aging and construction situation showed a good agreement with the micro-tremor observation results.

Earthquake Response Analysis of the Historic Reinforced Concrete Temple Otaniha Hakodate Bestuin after Seismic Refrofitting with Friction Dampers
Kazutaka Shirai, Masaru Kikuchi, Tomoaki Ito, Ken Ishii
International Journal of Architectural Heritage, 2018, [Peer-reviewed], [International Magazine]
English, Scientific journal

A proposal of an isolation system with higher seismic safety against input ground motions beyond expectations
Hiroki Hamaguchi, Tomotaka Wake, Masashi Yamamoto, Masaru Kikuchl
Journal of Structural and Construction Engineering, 82, 739, 1349, 1359, Architectural Institute of Japan, 01 Sep. 2017, [Peer-reviewed], [Domestic magazines]
English, Scientific journal, Seismically isolated (SI) buildings are thought to be fragile when subjected to excessive input ground motions beyond design level. The authors have been proposing a new isolation bearing which has much higher seismic safety than conventional bearings. Supporting a superstructure only by the proposed bearings will enable the whole SI building to protect from any structural damage. In this paper, the development process of the proposed bearing including the selection of the most suitable slider material, dynamic loading test of a scaled bearing and quasi-static loading test of a full-scale bearing is mentioned. Preliminary and detailed time history analyses of SI building models are also shown. The research results lead to the conclusion that a system applying the proposed bearings realizes an SI building with higher seismic safety than ever, if only provided a large enough isolation gap., 11047912

Coupling behavior of shear deformation and end rotation of elastomeric seismic isolation bearings
Ken Ishii, Masaru Kikuchi, Takuya Nishimura, Cameron J. Black
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 46, 4, 677, 694, WILEY, Apr. 2017, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
English, Scientific journal, This paper presents a mechanical model for predicting the behavior of elastomeric seismic isolation bearings subject to combined end rotations and shear deformation. The mechanical model consists of a series of axial springs at the top, mid-height and bottom of the bearing to vertically reproduce asymmetric bending moment distribution in the bearings. The model can take into account end rotations of the bearing, and the overall rotational stiffness includes the effect of the variation of vertical load on the bearing and the imposed shear deformation. Static bending tests under various combinations of vertical load and shear deformation were performed to identify the mechanical characteristics of bearings. The test results indicate that bearing rotational stiffness increases with increasing vertical load but decreases with increasing shear deformation. Simulation analyses were conducted to validate the new mechanical model. The results of analyses using the new model show very good agreement with experimental observations. A series of seismic response analyses were performed to demonstrate the dynamic behavior of top-of-column isolated structures, a configuration where the end rotations of isolation bearings are typically expected to be larger. The results suggest that the end rotations of elastomeric bearings used in practical top-of-column isolated structures do not reduce the stability limit of isolation system. Copyright (c) 2016 John Wiley & Sons, Ltd., 11047912

過大変位抑制機構付き可変摩擦ダンパーによる鋼構造超高層建築の地震応答制御効果に関する解析的研究　　　　　　　　　　　　　　　
白井和貴, 李イ科, 石井歩, 菊地優
構造工学論文集, 63B, 153, 160, Mar. 2017, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

鉛プラグ入り積層ゴムの熱・力学的連成挙動を考慮した免震建物の地震応答解析
黒嶋洋平, 石井建, 菊地優, 飯場正紀, 白井和貴
構造工学論文集, 63B, 231, 239, Mar. 2017, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 11047912

A proposal of An Isolation System with Higher Seismic Safety against Input Ground Motions beyond Expectations
Hiroki Hamaguchi, Masashi Yamamoto, Tomotaka Wake, Masaru Kikuchi
EMI2017, 82, 739, 1349, 1359, Architectural Institute of Japan, 2017
English, International conference proceedings, Since seismically isolated (SI) buildings are thought to be fragile when subjected to extreme input ground motions beyond design level, various measures such as shock absorbers on moat walls and stoppers put in isolation level have been developed. Those technologies should be helpful to increase seismic safety margin of SI buildings, while they cannot avoid the damage to moat walls, superstructure, or isolation devices. In this paper, the authors propose a new lead rubber bearing (LRB) which has much higher seismic safety compared to general isolation bearings including conventional LRBs.
 The proposed bearing named “FSLRB” or “Fail-Safe LRB” consists of a conventional LRB and a newly developed slider system in series. Friction factor of the slider system is optimally provided to start sliding just before LRB gives a hardening property with the shear strain of around 250%. Then, the bearing behaves as a general LRB which is just friction connected to the building structure at either of upper or lower end, when subjected to design level earthquakes or smaller, while the sliding behavior keeps LRB away from hardening and shear break in severe earthquakes beyond expectations. Hence, supporting a superstructure only by the proposed bearings will enable the whole SI building to protect from any structural damage regardless of the input ground motion levels. A preliminary time history analysis for two SI building models, one applying only FSLRBs, the other applying only conventional LRBs, shows the advantages of the system with the proposed bearings.
 Realizing the above high seismic performance, firstly the most suitable slider material, which was a certain PTFE, was selected by conducting a series of dynamic loading test for each combination of stainless steel plate (SUS304) and 12 candidate slider materials. A dynamic loading test of a scaled FSLRB applying the selected PTFE showed that the bearing almost behaved as expected in the preliminary time history analysis. Dynamic and static friction factors were evaluated as well as surface pressure and velocity dependence of those two factors were formulated from the test results. Furthermore, a full-scale FSLRB was tested under a rather high compression force with quasi-static horizontal loading, to investigate the maximum allowable conditions regarding surface pressure and the second shape factor of LRB part. Finally, a detailed time history analysis of a FSLRB building model was conducted. As for the analysis model, 256 full-size FSLRBs with the mechanical properties evaluated in the above loading tests supported a deformed nuclear power plant consisted of a reactor building and a turbine building set on a common isolation raft. The analysis result showed that the superstructure remained elastic and the maximum responses were lower than design criteria even when subjected to a long-period ground motion beyond design level. On the other hand, it became clear that both the maximum deformation and residual deformation at isolation level were much larger than conventional LRB building model.
  From the above development and analyses, it can be finally concluded that an SI building applying the proposed bearings can realize much higher seismic safety compared to conventional SI buildings, if only provided a large enough isolation gap considering the maximum considered earthquakes., 11047912

Analytical Study on the Seismic Retrofitting of a Historical Reinforced Concrete Temple using Frcition Dampers　　　　　　　　　　　　　　　
Kazutaka Shirai, Masaru Kikuchi, Tomoaki Ito, Ken Ishii
Proceesing of the 3rd International Conference on Protection of Historical Constructions, Lisbon, Portugal, 2017, [International Magazine]
English, International conference proceedings

Seismic response analysis considering the thermal and mechanical coupling behavior of lead rubber bearings
Ken Ishii, Masaru Kikuchi, Yohei Kuroshima
EMI2017, 2017, [International Magazine]
English, International conference proceedings, 11047912

Numerical model for low-shear modulus high-damping rubber isolation bearing under large shear deformation
Masaru Kikuchi, Ken Ishii, Kato Hideaki, Masahiro Nakamura
EMI2017, 2017, [Lead author], [International Magazine]
English, International conference proceedings, 11047912

Strength Degradation on Lead-Rubber Bearings during a Long-duration Earthquake
T. Wake, M. Kikuchi, K. Ishii
2017 NZSEE Conference, 2017, [International Magazine]
English, International conference proceedings, 11047912

Horizontal Biaxial Loading Tests on Sliding Lead Rubber Bearing System　　　　　　　　　　　　　　　
M. Yamamoto, H. Hamaguchi, N. Kamoshita, M. Kikuchi, K. Ishii, T. Wake
2017 NZSEE Conference, 2017, [International Magazine]
English, International conference proceedings

An analytical study on flexural deformation control effects of steel super high-rise buildings using variable friction dampers subjected to earthquakes
Kazutaka SHIRAI, Ayumu ISHII, Masaru KIKUCHI
Steel Construction Engineering, 23, 90, 89, 104, Jun. 2016, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

Analytical Model for Elastoplastic and Creep-Like Behavior of High-Damping Rubber Bearings
Hideaki Kato, Takahiro Mori, Nobuo Murota, Masaru Kikuchi
JOURNAL OF STRUCTURAL ENGINEERING, 141, 9, 04014213-1, 04014213-9, ASCE-AMER SOC CIVIL ENGINEERS, Sep. 2015, [Peer-reviewed], [International Magazine]
English, Scientific journal, In the present study, a new analytical model of high-damping rubber bearings (HDRBs) for time-history analysis is proposed. The proposed model is used in the evaluation of elastoplastic and creep-like behavior of HDRBs under bidirectional seismic and strong wind loading. The analytical model was developed by reducing the degrees of freedom of a new type of constitutive law that was proposed by the authors for finite-element analysis of seismic isolation bearings. First, the validity of the proposed model for time-history response analysis was examined through various tests of HDRBs under unidirectional and bidirectional loading. The analytical results agreed well with the test results. Next, wind loading tests were conducted and the reproducibility of creep-like behavior of HDRBs under wind loading was evaluated. The effectiveness of the proposed model was verified by the tests, and the limitations of the applicability of the proposed model were determined. (C) 2014 American Society of Civil Engineers.

ねじれひずみを考慮した高減衰積層ゴムの水平２方向復元力特性
菊地優, 鵜原正樹, 白井和貴, 山本雅史, 佐々木頼孝
構造工学論文集, 61B, 471, 480, Mar. 2015, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal, 10335731

Analytical model for lead-rubber bearings considering heat conduction　　　　　　　　　　　　　　　
Ippei Tsunezawa, Masaru Kikuchi, Takahito Nakamura
EMI2015, 2015, [International Magazine]
English, International conference proceedings

Performance and response analysis of a seismically isolated building during the 2011 Tohoku earthquake, Japan　　　　　　　　　　　　　　　
Masaru Kikuchi, Toshihide Kashima, Kyo Fukuda
EMI2015, 2015, [Lead author], [International Magazine]
English, International conference proceedings

A mechanical model for the triaxial behavior of high-damping rubber bearings
Masaru Kikuchi, Hideaki Kato, Masashi Yamamoto, Ken Ishii, Kazutaka Shirai
Journal of Structural and Construction Engineering, 80, 713, 1067, 1077, Architectural Institute of Japan, 2015, [Peer-reviewed], [Lead author], [Domestic magazines]
English, Scientific journal, A mechanical model for predicting the triaxial behavior of high-damping rubber bearings under bidirectional horizontal deformations and axial load is presented in this paper. This new model is developed by combining two existing models, both of which have been previously proposed by the authors. Tests of isolation bearings under bidirectional horizontal loading with different axial load levels were conducted. The experimental formulae for the bidirectional hysteresis model in the mechanical model were identified from the test results. The proposed model is shown to be capable of expressing the influence of the bidirectional deformations and axial load on the hysteresis loops., 10335731

An analytical hysteresis model for lead dampers to consider the variations of mecanical properties due to cyclic loading
Takuya Nishimura, Keiji Nakanishi, Masanori Iiba, Masaru Kikuchi
Journal of Structural and Construction Engineering, 80, 711, 735, 743, Architectural Institute of Japan, 2015, [Peer-reviewed], [Domestic magazines]
English, Scientific journal, This paper presents an analytical hysteresis model of horizontal force-deformation relationship for lead dampers to evaluate the safety of seismic isolation system exposed to long-period earthquake motion. Dynamic loading tests with full-scale dampers were conducted. Yielding strength of damper declined with increase in accumulative deformation, however, it showed rise up temporarily when deformation amplitude was changed on sinusoidal horizontal loading. The analytical model can consider these features. Horizontal load of the test given response displacement motions at isolation layer obtained by a seismic time-history analysis using long-period earthquake motion was in good agreement with one calculated from the model.

Evaluation of ultimate strength and rotation angle for unbonded post-tensioned precast concrete beams by using section analysis
Makoto Matsumora, Takeaki Koshikawa, Masaru Kikuchi
Journal of Structural and Construction Engineering, 79, 701, 1005, 1013, Architectural Institute of Japan, 01 Jul. 2014, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, This paper describes new evaluation formulas of ultimate strength and rotation angle for unbonded post-tensioned precast concrete beams. These formulas are composed by two main variables, one is a reinforcement index(q) and the other is an effective prestressing level (λpe). To evaluate coefficients of the evaluation formulas, we carried out a parametric study with a numerical section analysis model, and obtained regression formulas for the coefficients. By applying the evaluation formulas to the results of parametric study and experiments on the past, we elucidate that the formulas evaluate the ultimate strengths and rotation angles of them accurately.

Response Analysis of a Seismic Isolation Retrofit: The National Museum of Western Art Building in Tokyo, Japan　　　　　　　　　　　　　　　
Masaru Kikuchi, Masaki Uhara, Toshihide Kashima, Kyo Fukuda
Proceesing of the 2nd International Conference on Protection of Historical Constructions, Antalya, Turkey, 865, 870, May 2014, [Lead author], [International Magazine]
English, International conference proceedings

Horizontal bidirectional characteristics of elastic sliding bearings under various fluctuant vertical loading conditions
Naoto Kamoshita, Masashi Yamamoto, Shigeo Minewaki, Masaru Kikuchi, Ken Ishii, Osamu Kouchiyama, Takahito Nakamura
Journal of Structural and Construction Engineering, 79, 698, 453, 461, 2014, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, A series of bidirectional loading tests were conducted on a high friction type sliding rubber bearing. Tests were conducted under horizontal bidirectional loading and constant or fluctuant vertical loading. Regardless of the vertical loading methods, the maximum shear strain under bidirectional loadings increased approximately 40% - 50% compared to nominal shear strain. Reflecting mechanical characteristics of the bearing, the analytical model of elastic sliding bearings was proposed. This model accurately represented force-displacement relationships under horizontal bidirectional loading and constant or fluctuant vertical loading., 10335731

Horizontal bidirectional hysteresis properties of lowmodulus high-damping rubber bearings
Masaru Kikuchi, Masashi Yamamoto, Ken Ishii, Yoritaka Sasaki
Journal of Structural and Construction Engineering, 79, 696, 257, 265, Architectural Institute of Japan, 2014, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal, This paper focuses on the horizontal bidirectional mechanical properties of low-modulus G0.35 type high-damping rubber bearings. Tests of reduced-scale bearings were conducted to identify the mechanical properties of the bearings. The influence of bidirectional loading was strongly apparent in the measured hysteresis properties. A refinement to an existing analytical model was provided to predict the mechanical behavior of a wide variety of high-damping rubber bearings. Additional shear strain due to twist deformation was included to evaluate shear stress components in the bearing. Seismic response analyses were performed to evaluate the dynamic behavior of an isolated building under bidirectional earthquake excitations., 10335731

AN ANALYTICAL STUDY ON EARTHQUAKE RESPONSE CONTROL EFFECTS OF A HIGH-RISE STEEL BUILDING USING VARIABLE FRICTION DAMPERS
ITO Tomoaki, SHIRAI Kazutaka, KIKUCHI Masaru, SANO Takeshi
Kou kouzou rombunshuu, 21, 84, 84_57, 84_65, Japanese Society of Steel Construction, 2014
Japanese, As a new damper which is suited to seismic retrofit for existing high-rise buildings, the authors have developed a passive variable friction damper (VFD) with displacement dependent damping force characteristics. In the present paper, in order to evaluate the response control effects of high-rise buildings incorporating VFDs, earthquake response analyses were conducted using thirty-story frame structure models with VFDs, with conventional friction dampers, or without dampers. The results indicated that VFDs can mitigate response story shear forces and column axial forces compared with conventional friction dampers.

Evaluation of Long-term Variation in Dynamic Properties of a Tall Reinforced Concrete Tower with Tuned Liquid Dampers　　　　　　　　　　　　　　　
Ken Ishii, Masaru Kikuchi
HKICEAS-648, Hong Kong International Conference on Engineering and Applied Science, Dec. 2013, [International Magazine]
English, International conference proceedings

Strucural Characteristics of a hystorical reinforced templce building, Hibashi-honganji Hakodate Betsuin　　　　　　　　　　　　　　　
KIKUCHI Masaru
The 13th East Asia-Pacfic Conference on Structural Engineering and Construction, Sapporo, Japan, Sep. 2013, [International Magazine]
English, International conference proceedings

Three-dimensional Mechanical Model for Circular Multilayered Elastomeric Bearings Considering Compression Modulus Distribution on the Rubber Pad
Ken Ishii, Masaru Kikuchi, Yoriko Suzuki
13th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures, Sendai, Japan, Sep. 2013, [International Magazine]
English, International conference proceedings, 10335731

Ultimate behavior of lead rubber bearings under horizontal Bi-directional deformation
Takahito Nakamura, Masaru Kikuchi, Ken Ishii, Osamu Kouchiyama
AIJ Journal of Technology and Design, 19, 42, 471, 476, Jun. 2013, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, Ultimate behavior of Lead Rubber Bearing (LRB) and Natural Rubber Bearing (RB) was investigated by bi-directional loading tests. LRB specimens provided by 7 types small models, which have square and circular shape, varied lead plug diameters, lead plug disposition and rubber layers. RB specimen was provided by square shape without lead plug. In this study it was cleared that brake-shear-strain was not influenced by the cross-section shape, lead plug diameters, and lead plug dispositions. Moreover LRB wasn't spoiled for brake-shear-strain under the bi-directional loading. It was also found that the brake-shear-strain of LRB was the same as that of RB., 10335731

アンボンドPCaPC梁部材と対象とする断面解析モデルの適用性に関する一検討　　　　　　　　　　　　　　　
松茂良諒, 越川武晃, 菊地優
構造工学論文集, 59B, 73, 80, Mar. 2013, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

A seismic response control design method considering robustness on rotational inertia mass dampers by normalized H2 norm contour maps
Kazutaka Shirai, Masaru Kikuchi
Journal of Structural and Construction Engineering, 78, 684, 261, 269, Feb. 2013, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, This paper presents a seismic response control design method considering robustness on building structures with inter-story rotational inertia mass dampers. The proposed method employs normalized contour maps of H2 norm (root mean square) or weighted H2 norm of transfer functions of systems. The concept of interval analysis methods is applied to deal with structural uncertainties which are assumed to be bounded. The influence of variations in parameters has been easily evaluated by these contour maps.

Hysteresis properties of lead rubber bearings under horizontal Bi-directional deformation
Takahito Nakamura, Masaru Kikuchi, Ken Ishii, Osamu Kouchiyama
Journal of Structural and Construction Engineering, 77, 681, 1663, 1671, Nov. 2012, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, Reduction of the horizontal deformation capacity of elastomeric isolation bearings under bi-directional loading has been one of the major concerns since that such a phenomenon was observed for high-damping rubber bearings. Using a newly constructed loading machine, a series of tests of lead rubber bearings (LRBs) were conducted to investigate their detailed mechanical characteristics under horizontal bi-directional deformation in the paper. The influences of the configurations, such as shape of cross section, diameter of a lead plug and aspect ratio, on the bi-directional behavior were carefully examined. Simulation analyses were also conducted to predict the bi-directional behavior of LRBs., 10335731

Dynamic Properties of a Tall Reinforced Concrete Tower with Tuned Liquid Dampers　　　　　　　　　　　　　　　
Ken Ishii, Masaru Kikuchi, Yoriko Suzuki
The 2012 World Congress on Advances in Civil, Environmental, and Materials Research, Seoul, Korea, Aug. 2012, [International Magazine]
English, International conference proceedings

SEISMIC RESPONSE ANALYSIS FOR ISOLATED STRUCTURE ON HIGH-DAMPING RUBBER BEARINGS USING A HYSTERESIS MODEL : BASED ON AN INTEGRAL TYPE DEFORMATION HISTORY CONSTITUTIVE LAW
KATO Hideaki, MORI Takahiro, SAMEJIMA Yusuke, MUROTA Nobuo, KIKUCHI Masaru, CHANG Kuo-Chun, HWANG Jenn-Shin, WANG Shiang-Jung
Journal of structural engineering. B, 58B, 231, 240, Architectural Institute of Japan, Mar. 2012, [Peer-reviewed], ［Internationally co-authored］, [Domestic magazines]
Japanese, Scientific journal

Response Modification Factor for the Design of Seismically Isolated Buildings　　　　　　　　　　　　　　　
S. Kitayama, K. Ishii, M. Kikuchi
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings

Safety Verificaion of Seismic Isolation System using Sliding Bearings against Long Period Earthquake Motions　　　　　　　　　　　　　　　
H. Hibino, R. Maseki, A. Nii, S Minewaki, M. Yamamoto, H. Yoneda, M. Takayama, M. Kikuchi, M. Iiba
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings

Seismic Response Analysis of Seismically Isolated Buildings with Multilayered Elastomeric Bearings Considering Rocking Behavior
K. Ishii, M. Kikuchi, K. Shirai
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings, 10335731

Safety Verificaion of Seismic Isolation System Using Rubber Bearing Against Long-Period Earthquake Motion　　　　　　　　　　　　　　　
M. Hikita, E. Takaoka, A. Kondo, T. Nishimura, S. Yamamoto, M. Takayama, M. Kikuchi, M. Iiba
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings

Safety Verificaion of Seismic Isolation System Using Elasto-plastic Dampers against Long-Period Earthquake Motion　　　　　　　　　　　　　　　
S. Yamamoto, T. Nishimura, K. Nakanishi, M. Hikita, Y. Takenaka, M. Takayama, M. Kikuchi, M. Iiba
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings

Simulation analysis for the ultimate behavior of full-scale lead-rubber seismic isolation bearings　　　　　　　　　　　　　　　
M. Kikuchi, I. D. Aiken, A. Kasalanati
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [Lead author], ［Internationally co-authored］, [International Magazine]
English, International conference proceedings

Behavior of Sliding Rubber Bearings under Horizonal Bidirectional Loadings
M. Yamamoto, S. Minewaki, N. Kamoshita, M. Kikuchi, K. Ishii, O. Kouchiyama, T. Nakamura
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings, 10335731

Behavior of lead rubber bearing under horizonal bi-directional loading test
Takahito Nakamura, Osamu Kouchiyama, M. Kikuchi
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings, 10335731

Safety Verificaion of Seismic Isolation System using Oil and Viscous Dampers against Long Period Earthquake Motions　　　　　　　　　　　　　　　
S Minewaki, M. Yamamoto, H. Yoneda, R. Maseki, I Nagashima, A. Nii, M. Takayama, M. Kikuchi, M. Iiba
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings

A New Hysteresis Model Based On An Integral Type Deformation-history for Elastomeric Seismic Isolation Bearings　　　　　　　　　　　　　　　
H. Kato, T. Mori, N. Mutota, S. Suzuki, M. Kikuchi
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings

A New Analytical Model for Reinforced Concrete Bearm-Column Joints Subjected to Cyclic Loading　　　　　　　　　　　　　　　
T. Saito, M. Kikuchi
Proceeding of the 15th World Conference on Earthquake Engineering, 2012, [International Magazine]
English, International conference proceedings

Development of friction damper with displacement dependent variable damping force characteristics
Kazutaka Shirai, Takeshi Sano, Yasumasa Suzui, Mitsuru Kageyama, Masaru Kikuchi
AIJ Journal of Technology and Design, 18, 38, 85, 90, 2012, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, A friction damper with displacement dependent variable damping force characteristics was developed. The damper was designed to decrease damping force when damper displacement exceeded a predetermined value. Therefore, the damper is ideal for aseismic retrofit of existing skyscraper buildings in preparation for long-period earthquake ground motions expected to occur in the near future. Dynamic loading tests were conducted on a full-scale steel frame with a brace-type variable friction damper to verify the damper performance. The damper exhibited on-target characteristics, stable performance, and a high endurance capacity under cyclic loadings.

A hysteresis model of high-damping rubber bearings using an integral type deformation history constitutive law
Hideaki Kato, Takahiro Mori, Nobuo Murota, Ken Ishii, Masaru Kikuchi
Journal of Structural and Construction Engineering, 76, 667, 1721, 1728, Sep. 2011, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, A new hysteresis model for high-damping rubber bearings is proposed, which has been developed based on an elasto-plastic, integraltype deformation history constitutive law. One of the characteristics of the proposed model is the applicability of the same material parameters as the proposed model to finite element method analyses. Firstly, we derive the horizontal biaxial hysteresis model from the elasto-plastic constitutive law. Next, we compare the results of numerical analyses using the proposed hysteresis model with experimental results for tests of high-damping rubber bearings subjected to horizontal biaxial loading, and verify the validity of the proposed model. Lastly, we perform finite element method analyses and numerical analyses using a multi-shear springs model, and the results from each of these cases are compared with results given by the proposed model.

Compression and bending moduli distributions for multilayered elastomeric bearing
Ken Ishii, Masaru Kikuchi
Journal of Structural and Construction Engineering, 76, 666, 1425, 1431, Aug. 2011, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, This paper describes two types of normalized modulus distribution under compression and bending for a circular rubber with pad top and bottom surfaces that are bonded to rigid layers. The distribution is applied to a series of axial springs to account for the compressive and bending moduli of the rubber pad. The paper demonstrates thai the series of axial springs with varied modulus distribution has higher ratio of bending stifl'ness to compressive stiffness than the rubber pad. To define the correct ratio of bending stiffness to compressive stiffness, a nonlinear elastic model is provided for the axial springs. By using the varied modulus distribution and a nonlinear elastic model, the series of axial springs can produce much improved behavior over the uniform modulus assumption., 10335729

Bi-axial Horizontal Response for a Seismically-isolated Building with High-damping Rubber Bearings　　　　　　　　　　　　　　　
Masashi Yamamoto, Masaru Kikuchi, Ken Ishii, Harumi Yoneda, Shigeo Minewaki, Hideaki Kato
12th World Conference on Seismic Isolation, Energy Dissipation and Active Control of Structures, 2011, [International Magazine]
English, International conference proceedings

Three-dimensional analysis for square seismic isolation bearings under large shear deformations and high axial loads
Masaru Kikuchi, Takahito Nakamura, Ian D. Aiken
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 39, 13, 1513, 1531, JOHN WILEY & SONS LTD, Oct. 2010, [Peer-reviewed], [Lead author], ［Internationally co-authored］, [International Magazine]
English, Scientific journal, Square seismic isolation bearings are economical to manufacture, offer the advantage of simple connection configurations and have compact geometry requiring a minimum of space for installation. To be able to more effectively utilize square bearings for seismic isolation systems, a new mechanical model for predicting the large shear deformation behavior of square elastomeric isolation bearings is presented in this paper. The new model is developed by extending to three dimensions an existing model for elastomeric isolation bearings under severe axial loads and shear deformations. The model comprises multiple shear springs at the mid-height and a series of axial springs at the top and bottom boundaries. Static loading tests of square lead rubber isolation bearings were performed to investigate the influence of horizontal loading direction and axial load magnitude on bearing behavior. The test results showed that the ultimate behavior is strongly influenced by loading direction, especially under large shear deformation and high axial load. To confirm the validity of the model, analyses are performed of the loading tests of the square lead rubber isolation bearings. The results of analyses using the new model show very good agreement with the experimental results. Copyright (C) 2010 John Wiley & Sons, Ltd., 10335729

大変形・高軸力下における高減衰積層ゴムの力学挙動予測に関する研究
菊地 優, 石井 建, 加藤秀章
構造工学論文集, 56B, 179, 188, Mar. 2010, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal, 10335729

Three dimensional analysis for square seismic isolation bearings under large shear deformation and high axial loads
Masaru Kikuchi, Ken. Ishii, Takahito Nakamura, Ian D. Aiken
Joint conference proceedings, 7CUEE and 5ICEE, 1097, 1014, 2010, [Lead author], ［Internationally co-authored］, [International Magazine]
English, International conference proceedings, 10335729

A new analytical model for seismic isolation bearings subject to eccentric bending moments and shear deformation
Ken Ishii, Masaru Kikuchi, Yoshihisa Kitamura, Takahito Nakamura
Journal of Structural and Construction Engineering, 75, 647, 87, 93, Architectural Institute of Japan, 2010, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, This paper presents a new analytical model for predicting the behavior of elastomeric seismic isolation bearings subject to combined eccentric bending moments and shear deformation. The mechanical model consists of a series of axial springs at the top, mid-height and bottom of the isolator. The model can account for end rotations of the isolator, and the overall isolator rotational stiffness can include the influence of the variation of vertical load on the isolator and the imposed shear deformation. To identify the mechanical characteristics of isolators, static bending tests under various combinations of vertical load and shear deformation were performed. The results of analyses using the new model show very good agreement with experimental observations.

A three-dimensional multi-spring model for square lead-rubber bearings under large shear deformations
Masaru Kikuchi, Sachie Yamamoto, Takahito Nakamura, Takuya Nishimura, Kazuo Tamura
Journal of Structural and Construction Engineering, 74, 638, 647, 655, Apr. 2009, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal, The paper describes a new analytical model for predicting the large displacement behavior of square lead-rubber isolation bearings. The present model is developed by extending to three dimensions an existing model for elastomeric isolation bearings under severe axial loads and shear deformations. Static loading tests of square lead-rubber bearings are performed to investigate the effect of loading direction on bearing behavior. The test results showed that the ultimate behavior is strongly influenced by loading direction, especially for large shear deformation and high axial load. The results of analyses using the new model show very good agreement with the experimental results.

天然ゴム系積層ゴムの水平鉛直同時加力時の大変形挙動特性に関する研究　　　　　　　　　　　　　　　
西村拓也, 山本祥江, 黒澤 到, 菊地 優, 甲斐芳郎, 仲村崇仁
構造工学論文集, 55B, 517, 525, Mar. 2009, [Peer-reviewed], [Domestic magazines]
Japanese

A mechanical model for elastomeric seismic isolation bearings including the influence of axial load
Sachie Yamamoto, Masaru Kikuchi, Masaiki Ueda, Ian D. Aiken
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 38, 2, 157, 180, JOHN WILEY & SONS LTD, Feb. 2009, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
English, Scientific journal, For the purpose of predicting the large-displacement response of seismically isolated buildings, an analytical model for elastomeric isolation bearings is proposed. The model comprises shear and axial springs and a series of axial springs at the top and bottom boundaries. The properties of elastomeric bearings vary with the imposed vertical load. At large shear deformations, elastomeric bearings exhibit stiffening behavior under low axial stress and buckling under high axial stress. These properties depend on the interaction between the shear and axial forces. The proposed model includes interaction between shear and axial forces, nonlinear hysteresis, and dependence on axial stress. To confirm the validity of the model, analyses are performed for actual static loading tests of lead-rubber isolation bearings. The results of analyses using the new model show very good agreement with the experimental results. Seismic response analyses with the new model are also Conducted to demonstrate the behavior of' isolated buildings under severe earthquake excitations. The results obtained from the analyses with the new model differ in some cases from those given by existing models. Copyright (C) 2008 John Wiley & Sons, Ltd., 10335729

An analytical hysteresis model to predict the small shear strain behavior of high-damping rubber isolation bearings
M. Kikuchi, K. Morihiro, I. D. Aiken
PROTECTION OF HISTORICAL BUILDINGS - PROHITECH 09, VOL 1 AND 2, 1, 1, 689, +, CRC PRESS-TAYLOR & FRANCIS GROUP, 2009, [Lead author], ［Internationally co-authored］, [International Magazine]
English, International conference proceedings, This paper proposes an analytical hysteresis model to predict the small shear strain behavior of high-damping rubber isolation bearings (HDR). The National Museum of Western Art (NMWA) in Tokyo, Japan was seismically upgraded in 1998 with a seismic isolation system. The design analyses for the upgrade utilized an existing hysteresis model for HDR isolation bearings. The model was capable of predicting the nonlinear properties of HDR isolators for deformations expected in large earthquakes. Since the upgrade, the acceleration response of the building has been recorded for a number of small earthquakes. The maximum deformation of the HDR isolators in the small earthquakes was below the strain range for which the hysteresis model had been developed, so the small deformation force-displacement relationships for the isolation system were identified from the observed building acceleration records and the original HDR hysteresis model was extended to cover a broad range of shear strain.

The properties of lead-rubber beearing including the influence of varying vertical load under severe conditions
Sachie Yamamoto, Masaru Kikuchi, Takeaki Koshikawa, Masaiki Ueda
Journal of Structural and Construction Engineering, 73, 634, 2101, 2110, Dec. 2008, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, The widespread use of isolation has necessitated a better understanding of the more complex aspects of isolation device behvior. The porperties of seismic isolation devices depend upon the interaction between horizontal and vertical forces acting on the isolator. The actural hysteretic behavior of an isolation bearing under a structure subjected to severe earthwuake shaking is influenced by the variation of vertical load on the islator due to overturing forces. To identify the mechanical charcteristcs of lead-rubber isolators, cyclic shear tests of isolators under varying vetical load were conducted. The authors propose an analytical model for predicting the behavior of islators under varying vertical load conditions. The model can reflect the influence of verying vertical load on islator properties, and thios capability is confirmed by simulation analyses and comparison with the cyclic shear test results. The analytical model is also used to investigate the behavior of lead-rubber isolators under loadings more severe than typical design conditions.

On the response of yielding seismically isolated structures
Masaru Kikuchi, Cameron J. Black, Ian D. Aiken
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 37, 5, 659, 679, JOHN WILEY & SONS LTD, Apr. 2008, [Peer-reviewed], [Lead author], ［Internationally co-authored］, [International Magazine]
English, Scientific journal, This paper investigates the seismic response of yielding isolated structures. To establish a general understanding of the nonlinear response of seismically isolated structures, this study first investigates the nonlinear response of isolated structures subjected to steady-state harmonic motion and nonlinear transient ground excitation. The response of both viscously damped and hysteretically damped isolation systems is investigated in three phases. Initially, basic insights are gained through simple nonlinear two degrees of freedom (2-DOF) models subjected to harmonic motion of varying frequencies. Next, the transient response analysis of the nonlinear 2-DOF model is investigated for a wide range of isolation system and superstructure properties. The results obtained from both approaches indicate that the yielding behavior of a structure on an isolation system is significantly different from that of the comparable fixed-base structure. Finally, the response of the nonlinear 2-DOF system model is compared with that of a 15-story, three-dimensional model. Based on the results of these analytical investigations, some important considerations for the design of seismically isolated structures are presented. Copyright (C) 2007 John Wiley & Sons, Ltd.

Analytical modeling of elastomeric isolation bearings unders severe axial load and shear deformations　　　　　　　　　　　　　　　
S. Yamamoto, M. Kikuchi, I. D. Aiken
Proceeding of the 14th World Conference on Earthquake Engineering, 05-06-0018, 2008, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
English

接合部のせん断変形を考慮したRC骨組の非線形挙動解析　　　　　　　　　　　　　　　
斎藤隆典, 越川武晃, 上田正生, 菊地 優
日本建築学会 構造系論文集, 622, 99, 106, Dec. 2007, [Peer-reviewed], [Domestic magazines]
Japanese

並列多軸ばねを用いた積層ゴムの大変形挙動解析　　　　　　　　　　　　　　　
山本祥江, 菊地 優, 越川武晃, 上田正生
日本建築学会 構造系論文集, 618, 81, 88, Aug. 2007, [Peer-reviewed], [Domestic magazines]
Japanese

AN ANALYTICAL MODEL FOR LEAD-RUBBER BEARING UNDER LARGE DEFORMATIONS
KOTSUKI Atsushi, YAMAMOTO Sachie, KIKUCHI Masaru, KOSHIKAWA Takeaki, UEDA Masaiki
Journal of structural engineering. B, 53B, 9, 16, Architectural Institute of Japan, Mar. 2007, [Peer-reviewed], [Domestic magazines]
Japanese, An analytical model for lead-rubber bearings is proposed to predict bearing force-displacement behavior under extremely large deformation. Static loading tests of a lead-rubber bearing under a range of axial loads were performed to assist in the development of a new hysteresis model for large shear deformation behavior. The hysteresis model is combined with the mechanical model based on the two-spring model previously proposed by Koh and Kelly. The bearing test results showed that the mechanical properties, such as changes in shear stiffness and buckling characteristics, varied with the applied axial load. The proposed model can successfully predict a variety of force-displacement relationships for lead-rubber bearings taking into account the level of applied axial load.

An analytical model for lead-rubber bearings under large deformations
M. Kikuchi, S. Yamamoto, I. D. Aiken
Proceedings of the 8th Pacific Conference on Earthquake Engineering, 53, 9, 16, Architectural Institute of Japan, 2007, [Lead author], ［Internationally co-authored］, [International Magazine]
English, International conference proceedings, An analytical model for lead-rubber bearings is proposed to predict bearing force-displacement behavior under extremely large deformation. Static loading tests of a lead-rubber bearing under a range of axial loads were performed to assist in the development of a new hysteresis model for large shear deformation behavior. The hysteresis model is combined with the mechanical model based on the two-spring model previously proposed by Koh and Kelly. The bearing test results showed that the mechanical properties, such as changes in shear stiffness and buckling characteristics, varied with the applied axial load. The proposed model can successfully predict a variety of force-displacement relationships for lead-rubber bearings taking into account the level of applied axial load.

アンボンドPC鋼材を用いたPCa圧着梁部材の履歴特性モデルに関する研究　　　　　　　　　　　　　　　
小林正仁, 越川武晃, 上田正生, 菊地 優
コンクリート工学 年次論文集, 29, 3, 457, 462, 2007, [Peer-reviewed], [Domestic magazines]
Japanese

SEISMIC HAZARD ANALYSIS BASED ON FAULT RUPTURE SCENARIOS AND THEIR OCCURRENCE PROBABILITY : For implementation of strong ground motions predicted by fault models in performance-based design of structures
DAN Kazuo, KAMBARA Hiroshi, FUJIKAWA Satoshi, KIKUCHI Masaru
Journal of Structural and Construction Engineering (Transactions of AIJ), 71, 602, 119, 128, Architectural Institute of Japan, Apr. 2006, [Peer-reviewed], [Domestic magazines]
Japanese, Prediction technique of strong ground motions has been intensively developed in Japan since the 1995 Hyogo-Ken Nanbu earthquake (M_J 7.3), and it has been applied to the practical prediction for inland earthquakes and plate-boundary earthquakes by Japanese Government. On the other hand, recent earthquakes of the 2001 Geiyo earthquake (M_J 6.4) and the 2004 Mid Niigata prefecture earthquake (M_J 6.8) arose not only requirements of safety of lives and structural elements but also requirements of function of equipments and industrial lines. These requirements are well realized in the performance-based design of structures. Hence, we proposed a method of seismic hazard analysis based on fault rupture scenarios and their occurrence probability for implementation of strong ground motions predicted by fault models in performance-based design of structures.

LARGE DEFLECTION/POST PEAK ANALYSIS OF REINFORCED CONCRETE SLABS CONSIDERING THE EFFECT OF BOND-SLIP OF REINFORCEMENT
MIZUNO Masae, UEDA Masaiki, KOSHIKAWA Takeaki, KIKUCHI Masaru
Journal of Structural and Construction Engineering (Transactions of AIJ), 71, 602, 153, 160, Architectural Institute of Japan, Apr. 2006, [Peer-reviewed], [Domestic magazines]
Japanese, This paper deals with the large deflection analysis of reinforced concrete slabs considering the effect of bond slip of reinforcement. Johansen's yield-line theory is well known method of calculating the ultimate strength of RC slab. However, it under-estimates the ultimate strength of slabs which have fixed edges because of the membrane stress. In order to take it into account, geometrical nonlinearity should be considered. In this paper, we propose the method of large deflection analysis which is based on Murray and Wilson's method. In order to verify the analytical method, three numerical examples are given and the results are compared with the experimental results.

主筋の付着特性に影響を及ぼす各種要因を考慮したRC骨組の履歴挙動解析　　　　　　　　　　　　　　　
斎藤隆典, 越川武晃, 上田正生, 菊地 優
構造工学論文集, 52B, 101, 108, Mar. 2006, [Peer-reviewed], [Domestic magazines]
Japanese

積層ゴムの大変形領域の特性を考慮した免震建物の地震時挙動　　　　　　　　　　　　　　　
山本祥江, 菊地 優, 越川武晃, 上田正生
構造工学論文集, 52B, 221, 229, Feb. 2006, [Peer-reviewed], [Domestic magazines]
Japanese

Free vibration analysis by the superposition method of rectangular Mindlin plates with internal columns resting on uniform elastic edge supports
F Ohya, M Ueda, T Uchiyama, M Kikuchi
JOURNAL OF SOUND AND VIBRATION, 289, 1-2, 1, 24, ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, Jan. 2006, [Peer-reviewed], [International Magazine]
English, Scientific journal, Free vibration analysis of rectangular Mindlin plates is carried out via the superposition method and is shown to produce accurate results. The analytical method proposed by the authors in this paper solves the problem for the case where the plate has simultaneous elastic edge and internal supports. The conditions of edge supports are uniform lateral, rotational and torsional elastic supports, whereas, the internal supports are column supports with finite area. Compatibility between the plate and column is achieved by requiring that the column and plate rotations be equal. The results presented herein are verified through comparison with results presented by others. Numerical examples presented in this study confirm that the analytical method is able to model the property of the elastic edge supports while simultaneously considering the effect of column restraint, an effect which increases with column number and area. (c) 2005 Elsevier Ltd. All rights reserved.

アンボンドPC圧着工法を用いたエネルギー吸収PCa架構の履歴挙動に関する解析的研究
越川武晃, 上田正生, 菊地 優, 小林正仁
コンクリート工学 年次論文集, 28, 2, 73, 78, 日本コンクリート工学協会, 2006, [Peer-reviewed], [Domestic magazines]
Japanese, 本論文では,クリティカル断面となる圧着接合部に普通強度鉄筋を通し配筋し,原点指向性を維持しつつ鉄筋の降伏によってエネルギー吸収を図るアンボンドPC圧着型PCa架構を対象に,著者等の既往の解析法を用いた履歴挙動解析を行い,実験結果との比較ならびにパラメトリックスタディを通して,この種の架講の構造特性について解析的に検証を行った。

柱梁接合部内主筋の付着すべり分布を考慮したRC骨組の履歴挙動解析　　　　　　　　　　　　　　　
斉藤隆典, 越川武晃, 上田正生, 菊地 優
コンクリート工学 年次論文集, 28, 2, 85, 90, 2006, [Peer-reviewed], [Domestic magazines]
Japanese

PC外ケーブルによる既存RCスラブの補強方法について
森廣和幸, 上田正生, 越川武晃, 菊地 優
コンクリート工学 年次論文集, 28, 2, 493, 498, 日本コンクリート工学協会, 2006, [Peer-reviewed], [Domestic magazines]
Japanese, 本研究は,過去に受けた過大な載荷履歴により,たわみやひび割れ障害を受けたスラブを,PC外ケーブルよって再生をはかる補強工法について報告するものである。即ち,補強と同時に,当初の設計荷重を上回る積載を可能とするレトロフィットを意図した補強設計の考え方と,実際の試行・施工手順,更にはその後の載荷実験結果について考察をくわえている。

NON-LINEAR STEADY-STATE VIBRATION OF SEISMICALLY-ISOLATED STRUCTURES WITH HYSTERETICALLY-DAMPED ISOLATION SYSTEM
KIKUCHI Masaru, YAMAMOTO Sachie, TAMURA Kazuo, UEDA Masaiki
Journal of Structural and Construction Engineering (Transactions of AIJ), 70, 592, 75, 82, Architectural Institute of Japan, Jun. 2005, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, The study of the steady-state vibration of a system under sinusoidal excitation can provide important insights into the more general dynamic response structures. The response of seismically-isolated structures with viscously-damped isolation system was previously studied by the authors. This paper presents the non-linear steady-state vibration of seismically-isolated structures with hysteretically-damping isolation system. The solution method for the steady-state vibration of the non-linear system is based on the work of Tajimi, and expanded to seismically-isolated structures. The non-linear superstructure behavior is significantly different from that of fixed-base structure. Consequently, the important aspects for isolated structure design is highlighted.

FREE VIBRATION ANALYSIS OF SLABS IN FLAT PLATE STRUCTURES RESTING ON UNIFORMLY ELASTIC EDGE SUPPORTS
OHYA Fumito, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru
Journal of Structural and Construction Engineering (Transactions of AIJ), 70, 588, 95, 102, Architectural Institute of Japan, Jan. 2005, [Peer-reviewed], [Domestic magazines]
Japanese, The use of flat-plate structures have increased because this type of structure can realize optimum and flexible space utilization. In the application of flat-plate structures, slab resonance should be an important consideration, because of potential problems such as incorrect operation of equipment in manufacturing facilities or occupant discomfort in residential structures. However there are few studies on the free vibration analysis of slabs within flat-plate structures. In this paper, the free vibration analyses of plates with columns resting on lateral, rotational and torsional elastic edge supports uniformly are carried out by use of the superposition method based on the Mindlin plate theory. In order to study the vibration properties of the plate, column size, plate aspect ratio and plate thickness ratio are set up as evaluation parameters.

チモシェンコ梁要素を用いた曲げとせん断を受けるRC梁の材料非線形解析
越川武晃, 上田正生, 菊地 優
コンクリート工学 年次論文集, 27, 2, 67, 72, 日本コンクリート工学協会, 2005, [Peer-reviewed], [Domestic magazines]
Japanese, ファイバーモデルを用いて曲げとせん断を受けるRC梁に発生する斜めせん断亀裂を表現する一手法として,チモシェンコ梁要素を用いたRC梁の材料非線形解析法を提案した。まず有限要素法への定式化の概要と,垂直応力と横せん断応力による2軸応力状態を想定したコンクリートの構成則の取扱いについて記述した。更に,既往の実験結果を対象とした数値計算例を示し,コンクリートに1軸の構成則を用いた従来の解析法との比較を通して,本解析法による荷重一変位応答,亀裂の発生・分布性状について検証した。

柱梁接合部における主筋の付着すべりを考慮したRC平面骨組の履歴挙動解析　　　　　　　　　　　　　　　
齊藤隆典, 越川武晃, 上田正生, 菊地 優
コンクリート工学 年次論文集, 27, 2, 73, 78, 2005, [Peer-reviewed], [Domestic magazines]
Japanese

粘性系ダンパーを用いた免震構造物の非線形定常振動　　　　　　　　　　　　　　　
菊地 優, 田村和夫, 上田正生
日本建築学会 構造系論文集, 576, 63, 70, Feb. 2004, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese

Computer program for three-dimensional nonlinear dynamic response analysis of seismically-isolated buildings　　　　　　　　　　　　　　　
M. Kikuchi, K. Watanabe
Proceedings of the 13th World Conference on Earthquake Engineering, 600, 2004, [Peer-reviewed], [Lead author], [International Magazine]
English

Vibration analysis of reinforced concrete beam members including bond-slip reinforcement　　　　　　　　　　　　　　　
K. Inoue, M. Kikuchi, M. Ueda, T. Koshikawa
Proceedings of the 13th World Conference on Earthquake Engineering, 604, 2004, [Peer-reviewed], [International Magazine]
English

Seismic Response of Isolated Structures Depending on Hysteresis Models for Isolation Devices　　　　　　　　　　　　　　　
Masaru Kikuchi, Ian D. Aiken, Yoshihisa Kitamura, Masaiki Ueda
S3-3, JSSI 10th Anniversary Symposium on Performance of Response Controlled Buildings, S3-3, 2004, [Peer-reviewed], [Lead author], ［Internationally co-authored］, [International Magazine]
English

面外せん断変形ならびに補強材の付着すべりの影響を考慮した有限要素解析　　　　　　　　　　　　　　　
水野雅枝, 上田正生, 菊地 優, 内山武司
構造工学論文集, 50B, 279, 285, 2004, [Peer-reviewed], [Domestic magazines]
Japanese

FREE VIBRATION ANALYSIS OF SLABS IN FLAT PLATE STRUCTURES : (Part 2) Case of the slab resting on lateral and rotational elastic edge support uniformly
OHYA Fumito, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru
Journal of structural engineering. B, 50B, 269, 277, Architectural Institute of Japan, 2004, [Peer-reviewed], [Domestic magazines]
Japanese, The use of flat-plate structures will increase in the future because this type of structure can realize optimum and flexible space utilization. In the application of flat-plate structures, slab resonance should be an important consideration, because of potential problems such as incorrect operation of equipment in manufacturing facilities or occupant discomfort in residential structures. However there are few studies on the free vibration analysis of slabs within flat-plate structures. In this study the free vibration analyses of plates with columns resting on lateral and rotational elastic edge support uniformly are carried out by use of the superposition method which based on Mindlin plate theory. In order to study the vibration properties of the plate, column size and plate thickness ratio are set up as evaluation parameters.

LARGE DEFORMATION/POST-PEAK BEHAVIOR ANALYSIS OF CONCRETE BEAMS AND COLUMNS INCLUDING BOND-SLIP OF REINFORCEMENT
KOSHIKAWA Takeaki, UEDA Masaiki, WADA Toshinaga, KIKUCHI Masaru
Journal of Structural and Construction Engineering (Transactions of AIJ), 69, 580, 69, 76, Architectural Institute of Japan, 2004, [Peer-reviewed], [Domestic magazines]
Japanese, The large deformation/post-peak behavior analysis method of concrete beams and columns considering bond-slip of reinforcement is developed. The analytical procedure is capable of predicting the response of concrete beams and columns under axial force and biaxial bending in the material and geometrical nonlinear domains, including post-peak behavior using the incremental arch length method. The paper gives an outline of the nonlinear analysis method which includes the effect of bond-slip of reinforcement to handle the large deformation region, and three numerical examples are given to illustrate the use of the proposed procedure.

補強材の付着すべりを考慮したコンクリート梁部材の自由振動解析　　　　　　　　　　　　　　　
井上圭一, 菊地 優, 上田正生
日本建築学会 構造系論文集, 580, 77, 84, 2004, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

緊張鋼材の付着すべりを考慮した圧着型PcaPC梁－柱部材の履歴挙動解析
越川武晃, 齊藤隆典, 上田正生, 菊地 優
コンクリート工学 年次論文集, 26, 2, 37, 42, 日本コンクリート工学協会, 2004, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 本論文は,部材全長にわたるPC鋼材の付着すべり現象を考慮した,繰り返し荷重を受ける圧着型プレキャスト・プレストレストコンクリート(PCaPC)梁」柱部材の材料非線形解析法について報告するものである。本論においては更に,本解析結果と既往の実験結果との比較を通して,特に圧着接合面近傍におけるPC鋼材の抜け出し現象が,この種の部材の変形挙動に及ぼす影響についても考察されている。

FREE VIBRATION ANALYSIS OF SLABS IN FLAT PLATE STRUCTURES : Case of the slab resting all edges simply supported and all edges clamped
OHYA Fumito, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru
Journal of structural engineering. B, 49B, 275, 282, Architectural Institute of Japan, 2003, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, The use of flat-plate structures will increase in the future, because this type of structure can realize optimum and flexible space utilization. In the application of flat-plate structures, slab resonance should be an important consideration, because of potential problems such as incorrect operation of equipment in manufacturing facilities, or occupant discomfort in residential structures. However, there are few studies on the free vibration analysis of slabs within flat-plate structures. In this study, free vibration analyses of plates with columns resting all-edges-simply-supported and all-edges-clamped are performed by using the superposition method which based on Mindlin plate theory. In order to study the vibration properties of the plate, column size and plate thickness ratio are set up as evaluation parameters.

AN ANALYTICAL MODEL FOR SEISMIC ISOLATION DEVICES WITH HYSTERETIC DAMPING
KIKUCHI Masaru, KITAMURA Yoshihisa, INOUE Keiichi, UEDA Masaiki
Journal of Structural and Construction Engineering (Transactions of AIJ), 68, 565, 63, 71, Architectural Institute of Japan, 2003, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, For the purpose of accurately predicting the seismic response of an isolated building, an analytical model for seismic isolation devices with hysteretic damping is proposed. The proposed model is capable of well-predicting the force-displacement relationships of various different types of devices, high-damping rubber bearings, lead-rubber bearings, and two types of steel dampers. Seismic response analyses are conducted to study the effectiveness of both existing models and the proposed model. The responses given by the existing models are mostly conservative. This fact indicates that the proposed model can be used to evaluate the performance of isolation devices accurately and effectively.

やじろべえ型免震構造（SFS21）の開発　　　　　　　　　　　　　　　
堀 富博, 真瀬伸治, 磯田和彦, 猿田正明, 北村佳久, 佐武直紀, 菊地 優
日本建築学会 技術報告集, 17, 107, 112, 2003, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

MATERIAL NONLINEAR ANALYSIS OF REINFORCED CONCRETE SLABS CONSIDERING THE EFFECT OF BOND-SLIP OF REINFORCEMENT
MIZUNO Masae, UEDA Masaiki, KIKUCHI Masaru, UCHIYAMA Takeshi
Journal of Structural and Construction Engineering (Transactions of AIJ), 68, 569, 55, 63, Architectural Institute of Japan, 2003, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, This paper deals with the material nonlinear analysis of reinforced concrete slabs considering the effect of bond slip of reinforcement. Only a small number of studies have been reported in the literature that approximately consider the effect of reinforcement bond slip in two-way reinforced concrete slabs, and almost no cases are found in which material nonlinear analysis is used to rigorously consider the effect. In this paper a potential energy functional is first derived, and then a finite element formulation of the problem is implemented. In order to verify the analytical method five numerical examples are given and the results compared with experimental results.

補強材の付着すべりを考慮した２軸曲げを受けるコンクリート梁部材の大変形解析
越川武晃, 上田正生, 和田俊良, 菊地 優
コンクリート工学 年次論文集, 25, 2, 445, 450, 日本コンクリート工学協会, 2003, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, 本論文は,個々の梁要素内では微小変形を保持しながら,部材全体として大変形領域をも容易に取り扱うことが可能な,補強材の付着すべりを考慮した2軸曲げを受けるコンクリート梁部材の材料非線形解析手法について報告するものである。本論では,まず本解析法の定式化の概要について示されており,次いで既往の実験結果との比較により,本解析法の妥当性が検証されている。

Seismic Isolation of a Building with Large Eccentricity　　　　　　　　　　　　　　　
Y. Kitamura, M. Kikuchi, H. Nakashima, K. Nakagawa
SEWC2002 Structural Engineers World Congress, 2002, [Peer-reviewed], [International Magazine]
English, International conference proceedings

Seismic Behavior of a Reinforced Concrete Building due to Large Vertical Ground Motions in Near-Source Regions　　　　　　　　　　　　　　　
M. Kikuchi, K. Dan, K. Yashiro
Proceedings of the 12th World Conference on Earthquake Engineering, 1876, 2000, [Peer-reviewed], [Lead author], [International Magazine]
English, International conference proceedings

MECHANICAL CHARACTERISTICS OF ELASTOMERIC SEISMIC ISOLATION BEARINGS UNDER TENSION
KIKUCHI Masaru, KITAMURA Yoshihisa, HAYASHI Shoji, KAWASHIMA Yoichi, SAKAGUCHI Toru, YAMADA Chikafumi
Journal of Structural and Construction Engineering (Transactions of AIJ), 64, 524, 57, 64, Architectural Institute of Japan, 1999, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal, This paper describes the vertical behavior of elastomeric isolation bearings. A study consists of three phases. In the first phase, dynamic loading tests are conducted. Two types of high-damping rubber bearings which differ in thickness of flange-plates are used. Second, finite element analyses are performed to simulate the test results. Both the tests and the analysis results show that the flange-plates has significant effect on tension modulus. Third, a hysteresis model is proposed. Good agreement between the experimental and the analysis results shows that the model can be an effective numerical tool to predict the seismic response of isolated buildings.

積層ゴムに引張力が生じる免震建物の地震応答解析
菊地 優, 田村和夫, 北村佳久
第10回日本地震工学シンポジウム論文集, 235, 240, 1998, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal

An analytical hysteresis model for elastomeric seismic isolation bearings
Masaru Kikuchi, Ian D. Aiken
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 26, 2, 215, 231, JOHN WILEY & SONS LTD, Feb. 1997, [Peer-reviewed], [Lead author], ［Internationally co-authored］, [International Magazine]
English, Scientific journal, For the purpose of accurately predicting the seismic response of base-isolated structures, an analytical hysteresis model for elastomeric seismic isolation bearings is proposed. An extensive series of experimental tests of four types of seismic isolation bearings--two types of high-damping rubber bearings, one type of lead-rubber bearing and one type of silicon rubber bearing--was carried out with the objective of fully identifying their mechanical characteristics. The proposed model is capable of well-predicting the mechanical properties of each type of elastomeric bearing into the large strain range. Earthquake simulator tests were also conducted after the loading tests of the individual bearings. In order to show the validity of the proposed model, non-linear dynamic analyses were conducted to simulate the earthquake simulator test results. Good agreement between the experimental and analytical results shows that the model can be an effective numerical tool to predict not only the peak response value but also the force-displacement relationship of the isolators and floor response spectra for isolated structures.

DYNAMIC RESPONSE ANALYSIS OF REINFORCED CONCRETE BUILDINGS DAMAGED IN THE 1993 KUSHIRO-OKI AND THE 1994 HOKKAIDO-TOHO-OKI EARTHQUAKES
KIKUCHI Masaru, DAN Kazuo, JOH Osamu, GOTO Yasuaki, TANAKA Hideo, YASHIRO Kazuhiko
Journal of Structural and Construction Engineering (Transactions of AIJ), 62, 495, 53, 62, Architectural Institute of Japan, 1997, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, Four buildings at the Kushiro Technical High School, damaged in the 1993 Kushiro-Oki and the 1994 Hokkaido-Toho-Oki earthquakes, were modeled as an assembly of nonlinear elements to verify our present techniques for earthquake-resistant design of structures. The input motions were independently evaluated based on the strong motions recorded on the ground at the Kushiro District Meteorological Observatory, 2km west of the school, and the soil-structure interaction was taken into account. The results of the dynamic response analysis showed a good agreement with the detail of different degree of the damage to the four buildings.

STUDY ON LARGE-ACCELERATION MOTIONS RECORDED DURING THE LARGEST AFTERSHOCK (M6.5) OF THE 1993 HOKKAIDO-NANSEI-OKI EARTHQUAKE
DAN Kazuo, KIKUCHI Masaru, FUKUKITA Akira, NISHIMURA Isao
Journal of Structural and Construction Engineering (Transactions of AIJ), 62, 495, 45, 52, Architectural Institute of Japan, 1997, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal, A very large acceleration of 1.6 g was observed on the first floor of the Meiwa Elementary School, Hokkaido, during the largest aftershock of the 1993 Hokkaido-Nansei-Oki earthquake. In order to investigate the cause of this very large acceleration, this paper described the building three-dimensionally as an assembly of nonlinear elements because its plan was not a simple rectangle, and then the base-rock motions were estimated at a depth of 8.6 m after evaluating the soil-structure interaction. The resultant base-rock motions made it clear that the large acceleration of 1.6 g was ascribed mainly to the amplification factor of up to 30 at about 4 Hz from the base rock to the first floor of the building.

Dynamic Response Analyses of Reinforced Concrete Buildings damaged in the 1993 Kushiro-oki Earthquake of M7.8 in Japan　　　　　　　　　　　　　　　
K. Dan, M. Kikuchi
Proceedings of the 11th World Conference on Earthquake Engineering, 1164, 1996, [International Magazine]
English, International conference proceedings

免震・防振システムの振動特性に関する研究
菊地 優, 林 章二, 渡辺弘之
構造工学論文集, 41B, 69, 78, 1995, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal

SAFETY EVALUATION OF BASE-ISOLATED STRUCTURES
KIKUCHI Masaru, TAMURA Kazuo, WADA Akira
Journal of Structural and Construction Engineering (Transactions of AIJ), 60, 470, 65, 73, Architectural Institute of Japan, 1995, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal, This paper describes a series of seismic fragility analyses of base-isolated structures considering non-linear superstructure behavior. The Latin hypercube sampling technique is applied to construct a series of samples that explicitly account for non-Linear behavior. Fragility curves are generated that evaluate the limit state based on maximum superstructure ductility ratio. The study shows that base-isolation systems have a significant advantage for seismic protection compared with fixed-base structures. However, careful consideration should be given to the fact that plastic deformation demands on the superstructure can increase dramatically after yielding if the super-structure is designed anticipating a reduced seismic lateral shear force.

建物免震用積層ゴムの復元力特性に関する研究
菊地 優, 猿田正明, 田村和夫
構造工学論文集, 40B, 177, 188, 1994, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal

免震構造物のエネルギー応答に関する実験的研究　　　　　　　　　　　　　　　
菊地 優, 猿田正明, 田村和夫
第9回日本地震工学シンポジウム論文集, 1813, 1818, 1994, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal

免震・防振システムの振動特性に関する実験的研究　　　　　　　　　　　　　　　
林 章二, 菊地 優, 渡辺弘之, 芳沢利和, 福田 健
第9回日本地震工学シンポジウム論文集, 1807, 1812, 1994, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

1976年中国唐山地震（M7.8）によって被害を受けた煙突の挙動シミュレーション　　　　　　　　　　　　　　　
壇 一男, 渡辺宏一, 菊地 優
第9回日本地震工学シンポジウム論文集, 679, 684, 1994, [Peer-reviewed], [Domestic magazines]
Japanese, Scientific journal

EARTHQUAKE SIMULATOR TEST OF A BASE-ISOLATED REINFORCED CONCRETE BUILDING
KIKUCHI Masaru, SARUTA Masaaki, TAMURA Kazuo, KELLY James M., AIKEN lan D., CLARK Peter W.
Journal of Structural and Construction Engineering (Transactions of AIJ), 59, 462, 69, 78, Architectural Institute of Japan, 1994, [Peer-reviewed], [Lead author], [Domestic magazines]
Japanese, Scientific journal, This paper describes earthquake simulator tests of a 1/2.5-scale model of an existing base-isolated, three-story reinforced-concrete building. Two types of high-damping rubber bearings and one type of lead-rubber bearing were used in these tests. Moderate and extreme input motions were applied to the model to study the ultimate behavior of the isolated structure. Dynamic analyses were conducted to simulate the response to both moderate and extreme input tests, using a previously-developed analytical model. Good agreement between the experimental and analytical results was obtained, and the analytical model was confirmed to be suitable for representing the mechanical properties of bearings.

Design- and Ultimate-Level Earthquake Tests of a 1/2.5-scale Base-Isolation Reinforced-Concrete Building　　　　　　　　　　　　　　　
Ian D. Aiken, Peter W. Clark, M. Kikuchi
Proceedings of Seminar on Seismic Isolation, Passive Energy Dissipation, and Active Control, ATC 17-1, 1, 281, 292, 1993, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
English, International conference proceedings

STRUCTURAL DAMAGE POTENTIAL OF STRONG-MOTION RECORDS AT THE KUSHIRO DISTRICT METEOROLOGICAL OBSERVATORY FROM THE 1993 KUSHIRO-OKIEARTHQUAKE (M7.8)
DAN Kazuo, WATANABE Koichi, KIKUCHI Masaru, EBIHARA Manabu
Journal of structural and construction engineering, 454, 51, 60, Architectural Institute of Japan, 1993, [Peer-reviewed], [Domestic magazines]
English, Scientific journal, The strong-motion records at the Kushiro District Meteorological Observatory from the 1993 Kushiro-Oki earthquake were applied to rigid-frame structures of different types. The total plastic energy dissipation of short period structures under the records was larger than that under the design input motions, while the energy dissipation of long period structures was comparable or smaller. The response level-of a low building with a short natural period showed that the damage should be moderate or severe. But, the actual damage to such a kind of buildings was rather slight around the observatory. The earthquake resistant capacity of non-structural components should be appropriately evaluated in design process.

EXPERIMENTAL STUDIES OF THE MECHANICAL CHARACTERISTICS OF 3 TYPES OF SEISMIC ISOLATION BEARINGS
ID AIKEN, JM KELLY, PW CLARK, K TAMURA, M KIKUCHI, T ITOH
PROCEEDINGS OF THE TENTH WORLD CONFERENCE ON EARTHQUAKE ENGINEERING, VOLS 1-10, 2281, 2286, A A BALKEMA, 1992, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
English, International conference proceedings

千島海溝沿い巨大地震による強震動予測と免震建物の動的応答解析—Estimation of strong ground motions from mega earthquakes along the Kuril-Kamchatka Trench and their effects on seismically isolated buildings
小穴 温子, 菊地 優, 壇 一男, 井ノ上 大門, 射場 淳, 北海道地区自然災害科学資料センター報告 = Bulletin of the Natural Disaster Science Data Center, Hokkaido, 36, 41, 59, Mar. 2023
北海道地区自然災害科学資料センター (北海道大学大学院工学研究院), Japanese

免震構造の極限挙動シミュレーション (特集 ここまで来た数値シミュレーション)
菊地 優, 日本地震工学会誌 = Bulletin of JAEE, 30, 17, 20, Feb. 2017
日本地震工学会, Japanese

23305 A proposal of a seismic mass damper system using waste tires appropriate for RC building structures
SHIRAI Kazutaka, KIKUCHI Masaru, Summaries of technical papers of annual meeting, 2015, 609, 610, 04 Sep. 2015
Architectural Institute of Japan, Japanese

21211 Development of seismically isolated structure analysis system using OpenSees : Part1: Outline of OpenSees
ISHII Ken, KIKUCHI Masaru, TSUNEZAWA Ippei, SHIRAI Kazutaka, YAMAMOTO Masashi, KONDO Akihiro, Summaries of technical papers of annual meeting, 2015, 421, 422, 04 Sep. 2015
Architectural Institute of Japan, Japanese

21212 Development of seismically isolated structure analysis system using OpenSees : Part2 : Development of an Element Model
TSUNEZAWA Ippei, KIKUCHI Masaru, ISHII Ken, SHIRAI Kazutaka, YAMAMOTO Masashi, KONDO Akihiro, Summaries of technical papers of annual meeting, 2015, 423, 424, 04 Sep. 2015
Architectural Institute of Japan, Japanese

21216 An Analytical Model for Super Low Modulus High Damping Rubber Bearings under Large Shear Deformations
UCHIDA Mari, KIKUCHI Masaru, ISHII Ken, KATO Hideaki, NAKAMURA Masahiro, MUROTA Nobuo, Summaries of technical papers of annual meeting, 2015, 431, 432, 04 Sep. 2015
Architectural Institute of Japan, Japanese

21118 Experimental Study on Optimum Damper Characteristics of Passive Control Structures Considering Soil-Structure Interaction Part 3 Investigation on Different Conditions Regarding Ground and Damper Support Member
IIDA Toshiro, NAGAOKA Akari, KIKUCHI Masaru, SHIRAI Kazutaka, FUJIMORI Takeshi, Summaries of technical papers of annual meeting, 2015, 235, 236, 04 Sep. 2015
Architectural Institute of Japan, Japanese

免震構造物の地震応答評価法に関する一連の研究(2015年日本建築学会賞(論文))
菊地 優, 建築雑誌, 130, 1674, 41, 41, 20 Aug. 2015
一般社団法人日本建築学会, Japanese

OpenSeesを用いた免震構造極限挙動解析システムの構築 (2014年度(第6回)免震構造・制振構造に関わる研究助成の成果報告)
菊地 優, 山本 雅史, 近藤 明洋, Menshin, 89, 46, 49, Aug. 2015
日本免震構造協会, Japanese

For More Spread of Seismic Isolation Technology
Kikuchi Masaru, Journal of architecture and building science, 129, 1663, 39, 39, 20 Oct. 2014
Architectural Institute of Japan, Japanese

21295 Response Evaluation for Seismic Isolation Based on Acceleration Response Spectra against Long Period Earthquake Motions : Part 3: High-damping Rubber Bearings
SARUTA Masaaki, HANZAWA Tetsuya, NISHIMURA Takuya, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2014, 589, 590, 12 Sep. 2014
Architectural Institute of Japan, Japanese

21296 Response Evaluation for Seismic Isolation Based on Acceleration Response Spectra against Long Period Earthquake Motions : Part 4: Isolation System with Natural Rubber Bearing and Lead Damper
NISHIMURA Takuya, SARUTA Masaaki, HANZAWA Tetsuya, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2014, 591, 592, 12 Sep. 2014
Architectural Institute of Japan, Japanese

21287 Robustness Evaluation for Variation of Uncertain Structural Characteristics of Isolating Devices by Seismic Response Analysis : Part3: Seismically Isolated Buildings with Hysteretic Dampers
Hayakawa Yohei, Ishii Ken, Kikuchi Masaru, Shirai Kazutaka, Tanimoto Kazuki, Summaries of technical papers of annual meeting, 2014, 573, 574, 12 Sep. 2014
Architectural Institute of Japan, Japanese

21341 Optimum Damping Characteristic Evaluation of Vibration Control System with Hysteretic Damper in Consideration of Soil-Structure Interaction
KOYA Tomonori, SHIRAI Kazutaka, FUJIMORI Takeshi, ISHII Ken, KIKUCHI Masaru, Summaries of technical papers of annual meeting, 2014, 681, 682, 12 Sep. 2014
Architectural Institute of Japan, Japanese

21007 Experimental Study on Optimum Damper Characteristics of Passive Control Structures Considering Soil-Structure Interaction : Part 1 Design of a Specimen
SHIRAI Kazutaka, NAGAOKA Akari, KOYA Tomonori, FUJIMORI Takeshi, KIKUCHI Masaru, Summaries of technical papers of annual meeting, 2014, 13, 14, 12 Sep. 2014
Architectural Institute of Japan, Japanese

21008 Experimental Study on Optimum Damper Characteristics of Passive Control Structures Considering Soil-Structure Interaction : Part 2 Methods and Results of Shake Table Tests
NAGAOKA Akari, SHIRAI Kazutaka, FUJIMORI Takeshi, KIKUCHI Masaru, Summaries of technical papers of annual meeting, 2014, 15, 16, 12 Sep. 2014
Architectural Institute of Japan, Japanese

21424 Flexural Deformation Control of High-Rise Buildings Using Variable Friction Dampers Subjected to Strong Earthquakes
ISHII Ayumu, SHIRAI Kazutaka, ITO Tomoaki, KIKUCHI Masaru, Summaries of technical papers of annual meeting, 2014, 847, 848, 12 Sep. 2014
Architectural Institute of Japan, Japanese

21227 Study on Two Horizontal Hysteresis Model of High-damping Rubber Bearings Considered Torsional Deflection : Part 1: Result of Bi-axial Test
TSUNEZAWA Ippei, UHARA Masaki, ISHII Ken, KIKUCHI Masaru, YAMAMOTO Masashi, SASAKI Yoritaka, Summaries of technical papers of annual meeting, 2014, 0, 453, 454, 12 Sep. 2014
一般社団法人日本建築学会, Japanese

21228 Study on Two Horizontal Hysteresis Model of High-damping Rubber Bearings Considered Torsional Deflection : Part 2: A Hysteresis Model
UHARA Masaki, TSUNEZAWA Ippei, ISHII Ken, KIKUCHI Masaru, YAMAMOTO Masashi, SASAKI Yoritaka, Summaries of technical papers of annual meeting, 2014, 0, 455, 456, 12 Sep. 2014
一般社団法人日本建築学会, Japanese

040 A Study on Flexural Deformation Control Effects of High-Rise Buildings Using Variable Friction Dampers Subjected to Strong Earthquakes
ISHII Ayumu, 日本建築学会北海道支部研究報告集, 87, 167, 170, 28 Jun. 2014
Architectural Institute of Japan, Japanese

023 Experimental Study on Optimum Damping Characteristics of Vibration Control Structures with Friction Damper Considering Soil-Structure Interaction
NAGAOKA Akari, 日本建築学会北海道支部研究報告集, 87, 95, 98, 28 Jun. 2014
Architectural Institute of Japan, Japanese

21190 An Analytical Model for Low Modulus High Damping Rubber Bearings under Large Shear Deformations
KATO Hideaki, KIKUCHI Masaru, ISHII Ken, UHARA Masaki, Summaries of technical papers of annual meeting, 2013, 379, 380, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21178 Mechanical Properties of Lead Rubber Bearing Under Horizontal Bi-directional Deformation : Part 2 Hysteresis Properties
NAGAHIRO Kenta, KIKUCHI Masaru, NAKAMURA Takahito, ISHII Ken, KOUCHIYAMA Osamu, Summaries of technical papers of annual meeting, 2013, 355, 356, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21179 Mechanical Properties of Lead Rubber Bearing Under Horizontal Bi-directional Deformation ] Part 3 Ultimate Behavior
NAKAMURA Takahito, KIKUCHI Masaru, KOUCHIYAMA Osamu, ISHII Ken, NAGAHIRO Kenta, Summaries of technical papers of annual meeting, 2013, 357, 358, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21177 Mechanical Properties of Lead Rubber Bearing Under Horizontal Bi-directional Deformation : Part 1 Outline of Experimental Study
KOUCHIYAMA Osamu, KIKUCHI Masaru, NAKAMURA Takahito, ISHII Ken, NAGAHIRO Kenta, Summaries of technical papers of annual meeting, 2013, 353, 354, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21251 Seismic Response of The National Museum of Western Art in The 2011 off the Pacific coast of Tohoku Earthquake
UHARA Masaki, KIKUCHI Masaru, KASHIMA Toshihide, FUKUDA Kyo, Summaries of technical papers of annual meeting, 2013, 501, 502, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21272 Robustness Evaluation for Variation of Uncertain Structural Characteristics of Isolating Devices by Seismic Response Analysis : Part1: Contour Map of the Maximum Seismic Response
Ishii Ken, Tanimoto Kazuki, Shirai Kazutaka, Hayakawa Yohei, Kikuchi Masaru, Summaries of technical papers of annual meeting, 2013, 543, 544, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21273 Robustness Evaluation for Variation of Uncertain Structural Characteristics of Isolating Devices by Seismic Response Analysis : Part2: Quantitative Evaluation of Robustness
Hayakawa Yohei, Tanimoto Kazuki, Shirai Kazutaka, Ishii Ken, Kikuchi Masaru, Summaries of technical papers of annual meeting, 2013, 545, 546, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21485 Optimum Damping Characteristic Evaluation of Vibration Control System with Maxwell Damper in Consideration of Soil-Building Interaction
KOYA Tomonori, SHIRAI Kazutaka, FUJIMORI Takeshi, KIKUCHI Masaru, Summaries of technical papers of annual meeting, 2013, 969, 970, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21385 Practical Response Evaluation Method for Seismic Isolation System against Long Period Earthquake Motions : Part3 : Elast Sliding Bearings (High Friction Type)
NAKAJIMA Tohru, KIMURA Yuichi, HIBINO Hiroshi, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2013, 769, 770, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21384 Practical Response Evaluation Method for Seismic Isolation System against Long Period Earthquake Motions : Part 2: High-Damping Rubber Bearing and Lead Damper
NISHIMURA Takuya, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2013, 767, 768, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21383 Practical Response Evaluation Method for Seismic Isolation System against Long Period Earthquake Motions : Part 1: Lead-plugged Rubber Bearing
KONDO Akihiro, TAKENAKA Yasuo, YAGUCHI Tomoki, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2013, 765, 766, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21431 Response Control Effect of High-rise Building Using Friction Dampers with Variable Resistances : Part2 Time History Analysis of Thirty-story Frame Structure Models
ITO Tomoaki, SHIRAI Kazutaka, KIKUCHI Masaru, SANO Takeshi, Summaries of technical papers of annual meeting, 2013, 861, 862, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21430 Response Control Effect of High-rise Building Using Friction Dampers with Variable Resistances : Part1 Time History Analysis of SDOF System and Outline of Thirty-story Frame Structure Models
SHIRAI Kazutaka, ITO Tomoaki, KIKUCHI Masaru, SANO Takeshi, Summaries of technical papers of annual meeting, 2013, 859, 860, 30 Aug. 2013
Architectural Institute of Japan, Japanese

21180 An Analytical Model of Lead-Rubber Bearings under Two Horizontal Direction Loading
Kimura Hirotaka, Matsuhashi Yuto, Kikuchi Masaru, Ishii Ken, Yamamoto Masashi, Summaries of technical papers of annual meeting, 2013, 0, 359, 360, 30 Aug. 2013
一般社団法人日本建築学会, Japanese

21404 Experimental Study on Horizontal Bi-axial mechanical properties of Sliding Supports with Rubber-pad : Part 4:Method of Tests and Result of Uni-axial Test
KAMOSHITA Naoto, MINEWAKI Shigeo, YAMAMOTO Masashi, KIKUCHI Masaru, ISHII Ken, NAKAMURA Takahito, KOUCHIYAMA Osamu, Summaries of technical papers of annual meeting, 2013, 0, 807, 808, 30 Aug. 2013
一般社団法人日本建築学会, Japanese

21405 Experimental Study on Horizontal Bi-axial mechanical properties of Sliding Supports with Rubber-pad : Part 5: Results of Bi-axial Test and Interval Test
MINEWAKI Shigeo, KAMOSHITA Naoto, YAMAMOTO Masashi, KIKUCHI Masaru, ISHII Ken, NAKAMURA Takahito, KOUCHIYAMA Osamu, Summaries of technical papers of annual meeting, 2013, 0, 809, 810, 30 Aug. 2013
一般社団法人日本建築学会, Japanese

21406 Experimental Study on Horizontal Bi-axial Mechanical Properties of Sliding Supports with Rubber-pad : Part 6: Simulation Analysis for Varying Axial Load
KIKUCHI Masaru, ISHII Ken, YAMAMOTO Masashi, MINEWAKI Shigeo, KAMOSHITA Naoto, NAKAMURA Takahito, KOUCHIYAMA Osamu, Summaries of technical papers of annual meeting, 2013, 0, 811, 812, 30 Aug. 2013
一般社団法人日本建築学会, Japanese

Robustness Evaluation of Seismically Isolated Buildings During Earthquakes Considering Variation of Structural Parameters of Isolating Devices
Hayakawa Yohei, 日本建築学会北海道支部研究報告集, 86, 105, 108, 29 Jun. 2013
Architectural Institute of Japan, Japanese

Evaluation of Long-term Variation of Dynamic Characteristics of a Tall Reinforced Concrete Tower
Kikuchi Masaru, 日本建築学会北海道支部研究報告集, 86, 61, 64, 29 Jun. 2013
Architectural Institute of Japan, Japanese

Seismic Response of The National Museum of Western Art in The 2011 off the Pacific coast of Tohoku Earthquake
UHARA Masaki, 日本建築学会北海道支部研究報告集, 86, 121, 124, 29 Jun. 2013
Architectural Institute of Japan, Japanese

Optimum Damping Characteristic of Passive-Control Structure with Maxwell Damper in Consideration of Sway-Rocking Motion of Soil
KOYA Tomonori, 日本建築学会北海道支部研究報告集, 86, 89, 92, 29 Jun. 2013
Architectural Institute of Japan, Japanese

Analytical Investigation of Seismic Response Control Effect of High-Rise Building Using Friction Dampers with Variable Resistances
ITO Tomoaki, 日本建築学会北海道支部研究報告集, 86, 141, 144, 29 Jun. 2013
Architectural Institute of Japan, Japanese

Seismic Response Characteristics of Isolation Buildings with Multilayered Elastomeric Bearings Considering Rocking Behavior
ISHII Ken, 日本建築学会北海道支部研究報告集, 86, 81, 84, 29 Jun. 2013
Architectural Institute of Japan, Japanese

Analysis of the Behavior of Lead-Rubber Bearings under Two Horizontal Directional Loading
Kimura Hirotaka, 日本建築学会北海道支部研究報告集, 86, 161, 164, 29 Jun. 2013
一般社団法人日本建築学会, Japanese

2方向入力時の高減衰積層ゴムの限界特性と応答性状 (特集 免震建築物の設計力UP) -- (免震設計の勘所)
菊地 優, 建築技術, 761, 157, 159, Jun. 2013
建築技術, Japanese

21504 A Simple Robustness Evaluation Method of Passive Vibration Control Structures with Maxwell Type Dampers Based on H2 Norm
SHIRAI Kazutaka, KIKUCHI Masaru, Summaries of technical papers of annual meeting, 2012, 1007, 1008, 12 Sep. 2012
Architectural Institute of Japan, Japanese

21190 Study on Multi-cyclic Modeling of Devices and Response Evaluation for Seismic Isolation against Long Period Earthquake Motions : Part 3: Response Analysis Using Low Friction Bearing and Viscous Damper
NAKAMURA Soshi, NAKAMURA Naohiro, MINEWAKI Shigeo, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2012, 379, 380, 12 Sep. 2012
Architectural Institute of Japan, Japanese

21153 Analysis of the Behavior of High-damping Rubber Bearings under Two Horizontal Shear Deformations and Severe Axial Loads
FUJIWARA Mizuho, KIKUCHI Masaru, ISHII Ken, KATO Hideaki, Summaries of technical papers of annual meeting, 2012, 305, 306, 12 Sep. 2012
Architectural Institute of Japan, Japanese

21192 Study on Multi-cyclic Modeling of Devices and Response Evaluation for Seismic Isolation against Long Period Earthquake Motions : Part 5: Modeling of Lead Damper and Seismic Response Analyses
NISHIMURA Takuya, NAKANISHI Keiji, TAKAYAMA Mineo, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2012, 383, 384, 12 Sep. 2012
Architectural Institute of Japan, Japanese

21188 Study on Multi-cyclic Modeling of Devices and Response Evaluation for Seismic Isolation against Long Period Earthquake Motions : Part 1: Lead-plugged Rubber Bearing
KONDO Akihiro, TAKENAKA Yasuo, TAKAYAMA Mineo, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2012, 375, 376, 12 Sep. 2012
Architectural Institute of Japan, Japanese

21191 Study on Multi-cyclic Modeling of Devices and Response Evaluation for Seismic Isolation against Long Period Earthquake Motions : Part 4: High-damping Rubber Bearings
YAMAMOTO Sachie, NAKANISHI Keiji, TAKAYAMA Mineo, FURUHASHI Takeshi, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of annual meeting, 2012, 381, 382, 12 Sep. 2012
Architectural Institute of Japan, Japanese

21232 Seismic Response of Seismically Isolated Buildings Designed by U.S. Seismic Design Code Using Response Modification Factor
Tanimoto Kazuki, Kitayama Shoma, Ishii Ken, Shirai Kazutaka, Kikuchi Masaru, Summaries of technical papers of annual meeting, 2012, 463, 464, 12 Sep. 2012
Architectural Institute of Japan, Japanese

弾性すべり支承の水平二方向特性に関する実験的研究(その3:シミュレーション解析)
菊地優, 石井建, 山本雅史, 嶺脇重雄, 鴨下直登, 仲村崇仁, 河内山修, 日本建築学会大会学術講演梗概集・建築デザイン発表梗概集(CD−ROM), 2012, ROMBUNNO.21160, 20 Jul. 2012
Japanese

弾性すべり支承の水平二方向特性に関する実験的研究(その1:実験概要)
仲村崇仁, 河内山修, 菊地優, 石井建, 山本雅史, 嶺脇重雄, 鴨下直登, 日本建築学会大会学術講演梗概集・建築デザイン発表梗概集(CD−ROM), 2012, ROMBUNNO.21158, 20 Jul. 2012
Japanese

弾性すべり支承の水平二方向特性に関する実験的研究(その2:実験結果)
鴨下直登, 山本雅史, 嶺脇重雄, 菊地優, 石井建, 仲村崇仁, 河内山修, 日本建築学会大会学術講演梗概集・建築デザイン発表梗概集(CD−ROM), 2012, ROMBUNNO.21159, 20 Jul. 2012
Japanese

長周期地震動に対する免震部材のモデル化と免震建築物の応答評価 その2:弾性すべり支承(低摩擦)および粘性ダンパーのモデル化
嶺脇重雄, 中村壮志, 菊地優, 山本雅史, 高山峯夫, 飯場正紀, 日本建築学会大会学術講演梗概集・建築デザイン発表梗概集(CD−ROM), 2012, ROMBUNNO.21189, 20 Jul. 2012
Japanese

位相差変位入力を用いた免震積層ゴム水平二方向加力試験方法について
石井建, 菊地優, 山本雅史, 日本建築学会大会学術講演梗概集・建築デザイン発表梗概集(CD−ROM), 2012, ROMBUNNO.21183, 20 Jul. 2012
Japanese

007 Robustness Evaluation of Passive Vibration Control Structures with Rotational Inertia Mass Dampers Based on H2 Norm
SHIRAI Kazutaka, 日本建築学会北海道支部研究報告集, 85, 23, 28, 30 Jun. 2012
Architectural Institute of Japan, Japanese

014 Analysis of the Behavior of High-damping Rubber Bearings under Severe Axial Load and Two Horizontal Shear Deformations
Matsuhashi Yuto, 日本建築学会北海道支部研究報告集, 85, 55, 58, 30 Jun. 2012
Architectural Institute of Japan, Japanese

023 Horizontal Bi-directional Loading Programs of Elastomeric Seismic Isolation Bearings Using Sinusoidal Displacement Input with Phase Shift
ISHII Ken, 日本建築学会北海道支部研究報告集, 85, 95, 98, 30 Jun. 2012
一般社団法人日本建築学会, Japanese

Could Seismic Base Isolation Become Universal?
KIKUCHI Masaru, Journal of architecture and building science, 127, 1631, 45, 45, 20 Apr. 2012
Architectural Institute of Japan, Japanese

A hysteresis model of high-damping rubber bearings using an integral type deformation history constitutive law
Hideaki Kato, Takahiro Mori, Nobuo Murota, Ken Ishii, Masaru Kikuchi, Journal of Structural and Construction Engineering, 76, 667, 1721, 1728, Sep. 2011
A new hysteresis model for high-damping rubber bearings is proposed, which has been developed based on an elasto-plastic, integraltype deformation history constitutive law. One of the characteristics of the proposed model is the applicability of the same material parameters as the proposed model to finite element method analyses. Firstly, we derive the horizontal biaxial hysteresis model from the elasto-plastic constitutive law. Next, we compare the results of numerical analyses using the proposed hysteresis model with experimental results for tests of high-damping rubber bearings subjected to horizontal biaxial loading, and verify the validity of the proposed model. Lastly, we perform finite element method analyses and numerical analyses using a multi-shear springs model, and the results from each of these cases are compared with results given by the proposed model., Japanese

Compression and bending moduli distributions for multilayered elastomeric bearing
Ken Ishii, Masaru Kikuchi, Journal of Structural and Construction Engineering, 76, 666, 1425, 1431, Aug. 2011
This paper describes two types of normalized modulus distribution under compression and bending for a circular rubber with pad top and bottom surfaces that are bonded to rigid layers. The distribution is applied to a series of axial springs to account for the compressive and bending moduli of the rubber pad. The paper demonstrates thai the series of axial springs with varied modulus distribution has higher ratio of bending stifl'ness to compressive stiffness than the rubber pad. To define the correct ratio of bending stiffness to compressive stiffness, a nonlinear elastic model is provided for the axial springs. By using the varied modulus distribution and a nonlinear elastic model, the series of axial springs can produce much improved behavior over the uniform modulus assumption., Japanese

21253 Mechanical Properties of Lead Rubber Bearings under Biaxial Loading : Part 1: Biaxial Loading Tests
Nakamura Takahito, Kikuchi Masaru, Ishii Ken, Suzuki Yoriko, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 505, 506, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21262 An Analytical Model for Seismic Isolation Bearings under Large Shear Deformations Including the Influence of Compressive Modulus Distribution : Part I:Compressive Modulus Distribution on Rubber Layer
Ishii Ken, Kitayama Shoma, Kikuchi Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 523, 524, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21254 Mechanical Properties of Lead Rubber Bearings under Biaxial Loading : Part 2: Analyses Using 3-D Multiple Spring Model
Kikuchi Masaru, Ishii Ken, Suzuki Yoriko, Nakamura Takahito, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 507, 508, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21334 Experimental Study on Multi-cyclic Characteristics of Devices for Seismic Isolation against Long Period Earthquake Motions : Part 7: Lead Damper
NISHIMURA Takuya, NAKANISHI Keiji, TAKAYAMA Mineo, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 667, 668, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21333 Experimental Study on Multi-cyclic Characteristics of Devices for Seismic Isolation against Long Period Earthquake Motions : Part 6: Steel Damper
ODA Mamoru, TAKENAKA Yasuo, TAKAOKA Eiji, TAKAYAMA Mineo, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 665, 666, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21335 Experimental Study on Multi-cyclic Characteristics of Devices for Seismic Isolation against Long Period Earthquake Motions : Part 8: Oil Damper
MASEKI Ryota, NAGASHIMA Ichiro, NII Aiko, TAKAYAMA Mineo, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 669, 670, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21328 Experimental Study on Multi-cyclic Characteristics of Devices for Seismic Isolation against Long Period Earthquake Motions : Part 1: Outline of Experimental Study
IIBA Masanori, TAKAYAMA Mineo, KIKUCHI Masaru, HIBINO Hiroshi, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 655, 656, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21329 Experimental Study on Multi-cyclic Characteristics of Devices for Seismic Isolation against Long Period Earthquake Motions : Part 2: Lead-plugged Rubber Bearing
TAKENAKA Yasuo, HIKITA Makiko, TAKAOKA Eiji, TAKAYAMA Mineo, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 657, 658, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21330 Experimental Study on Multi-cyclic Characteristics of Devices for Seismic Isolation against Long Period Earthquake Motions : Part 3: High-damping Rubber Bearings
YAMAMOTO Sachie, SARUTA Masaaki, MORIKAWA Kazuhiko, TAKAYAMA Mineo, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 659, 660, 20 Jul. 2011
Architectural Institute of Japan, Japanese

21331 Experimental Study on Multi-cyclic Characteristics of Devices for Seismic Isolation against Long Period Earthquake Motions : Part 4: Natural Rubber Bearing and Sliding Bearing (High Friction Type)
HIBINO Hiroshi, TAKAYAMA Mineo, KIKUCHI Masaru, IIBA Masanori, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2011, 661, 662, 20 Jul. 2011
Architectural Institute of Japan, Japanese

長周期地震動に対する免震部材の多数回繰返し実験 その5:弾性すべり支承(低摩擦)
嶺脇重雄, 山本雅史, 米田春美, 高山峯夫, 菊地優, 飯場正紀, 日本建築学会学術講演梗概集B−2 構造2, 2011, 663-664, 664, 20 Jul. 2011
Architectural Institute of Japan, Japanese

長周期地震動に対する免震部材の多数回繰返し実験 その9:粘性ダンパー
山本雅史, 嶺脇重雄, 米田春美, 高山峯夫, 菊地優, 飯場正紀, 日本建築学会学術講演梗概集B−2 構造2, 2011, 671-672, 672, 20 Jul. 2011
Architectural Institute of Japan, Japanese

039 Analysis for the Behavior of Full-scale Lead Rubber Bearings under Severe Condition Including the Influence of Compression Modulus Distribution
KIKUCHl Masaru, 日本建築学会北海道支部研究報告集, 84, 165, 168, 02 Jul. 2011
Architectural Institute of Japan, Japanese

034 Birth of seismic modification factor used in the United States and the methods of its calculation
KITAYAMA Shoma, 日本建築学会北海道支部研究報告集, 84, 143, 146, 02 Jul. 2011
Architectural Institute of Japan, Japanese

21263 An Analytical Model for Seismic Isolation Bearings under Large Shear Deformations Including the Influence of Compressive Modulus Distribution : Part II:Behavior Analysis of Lead-rubber Bearings
Kitayama Shoma, Ishii Ken, Kikuchi Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 525, 526, 2011
Architectural Institute of Japan, Japanese

積層ゴム内部の圧縮・曲げ弾性係数の分布に関する基礎的考察
日本建築学会構造系論文集, 666, 1425, 1431, 2011

Three-dimensional analysis for square seismic isolation bearings under large shear deformations and high axial loads
Masaru Kikuchi, Takahito Nakamura, Ian D. Aiken, EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 39, 13, 1513, 1531, Oct. 2010
Square seismic isolation bearings are economical to manufacture, offer the advantage of simple connection configurations and have compact geometry requiring a minimum of space for installation. To be able to more effectively utilize square bearings for seismic isolation systems, a new mechanical model for predicting the large shear deformation behavior of square elastomeric isolation bearings is presented in this paper. The new model is developed by extending to three dimensions an existing model for elastomeric isolation bearings under severe axial loads and shear deformations. The model comprises multiple shear springs at the mid-height and a series of axial springs at the top and bottom boundaries. Static loading tests of square lead rubber isolation bearings were performed to investigate the influence of horizontal loading direction and axial load magnitude on bearing behavior. The test results showed that the ultimate behavior is strongly influenced by loading direction, especially under large shear deformation and high axial load. To confirm the validity of the model, analyses are performed of the loading tests of the square lead rubber isolation bearings. The results of analyses using the new model show very good agreement with the experimental results. Copyright (C) 2010 John Wiley & Sons, Ltd., JOHN WILEY & SONS LTD, English

21125 Bi-axial Horizontal Response for the Seismically-isolated Building with High-damping Rubber Isolation Bearings : Part 1: Mechanical Models for High-damping Rubber Isolation Bearings
KIKUCHI Masaru, ISHII Ken, YAMAMOTO Masashi, YONEDA Harumi, MINEWAKI Shigeo, KATO Hideaki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2010, 249, 250, 20 Jul. 2010
社団法人日本建築学会, Japanese

21126 Bi-axial Horizontal Response for the Seismically-isolated Building with High-damping Rubber Isolation Bearings : Part 2: Seismic Response Analysis Model
YONEDA Harumi, YAMAMOTO Masashi, MINEWAKI Shigeo, ISHII Ken, KIKUCHI Masaru, KATO Hideaki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2010, 251, 252, 20 Jul. 2010
社団法人日本建築学会, Japanese

21127 Bi-axial Horizontal Response for the Seismically-isolated Building with High-damping Rubber Isolation Bearings : Part 3: Seismic Response Analysis Results
ISHII Ken, KIKUCHI Masaru, YAMAMOTO Masashi, YONEDA Harumi, MINEWAKI Shigeo, KATO Hideaki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2010, 253, 254, 20 Jul. 2010
社団法人日本建築学会, Japanese

047 Seismic Performance of Sapporo Archives Museum
FUJIWARA Mizuho, 日本建築学会北海道支部研究報告集, 83, 185, 188, 03 Jul. 2010
Architectural Institute of Japan, Japanese

049 An Analytical Model for Lead-rubber Bearings under Large Shear Deformations Including the Influence of Compression Modulus Distribution
KITAYAMA Shoma, 日本建築学会北海道支部研究報告集, 83, 193, 196, 03 Jul. 2010
Architectural Institute of Japan, Japanese

048 Bi-axial Horizontal Response for the Seismic-isolated Building with High-damping Rubber Isolation Bearings
ISHII Ken, 日本建築学会北海道支部研究報告集, 83, 189, 192, 03 Jul. 2010
Architectural Institute of Japan, Japanese

免震技術の原子力施設への適用　　　　　　　　　　　　　　　
第13回日本地震工学シンポジウム論文集（CD-ROM）, 1223, 1230, 2010

免震積層ゴム水平二方向加力実験の力学挙動解析　　　　　　　　　　　　　　　
第13回日本地震工学シンポジウム論文集（CD-ROM）, 480, 485, 2010

Three dimensional analysis for square seismic isolation bearings under large shear deformation and high axial loads　　　　　　　　　　　　　　　
Joint conference proceedings, 7CUEE and 5ICEE(CD-ROM), 1, 1097, 1014, 2010

大変形・高軸力下における高減衰積層ゴムの力学挙動予測に関する研究　　　　　　　　　　　　　　　
構造工学論文集, 56B, 179, 188, 2010

The application of seismic isolation technology to nuclear power plant facilities　　　　　　　　　　　　　　　
1223, 1230, 2010

A new analytical model for elastomeric seismic isolation bearings under multiaxial loading　　　　　　　　　　　　　　　
480, 485, 2010

Prediction of high-damping rubber isolation bearing behavior under large shear deformations and severe axial loads　　　　　　　　　　　　　　　
56B, 179, 188, 2010

A new analytical model for seismic isolation bearings subject to eccentric bending moments and shear deformation
Ken Ishii, Masaru Kikuchi, Yoshihisa Kitamura, Takahito Nakamura, Journal of Structural and Construction Engineering, 75, 647, 87, 93, 2010
This paper presents a new analytical model for predicting the behavior of elastomeric seismic isolation bearings subject to combined eccentric bending moments and shear deformation. The mechanical model consists of a series of axial springs at the top, mid-height and bottom of the isolator. The model can account for end rotations of the isolator, and the overall isolator rotational stiffness can include the influence of the variation of vertical load on the isolator and the imposed shear deformation. To identify the mechanical characteristics of isolators, static bending tests under various combinations of vertical load and shear deformation were performed. The results of analyses using the new model show very good agreement with experimental observations., Architectural Institute of Japan, Japanese

23298 Strain Softening Characteristics of Concrete Subjected to Uniaxial Compression
KOSHIKAWA Takeaki, MURAMATSU Shinya, SAITO Takasuke, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. C-2, Structures IV, Reinforced concrete structures prestressed concrete structures masonry wall structures, 2009, 617, 618, 20 Jul. 2009
Architectural Institute of Japan, Japanese

20139 Material Non-Linear Analysis of Three-Dimensional RC Frames considering Shear Deformation of Joint
HISADA Masahiro, SAITO Takasuke, KOSHIKAWA Takeaki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2009, 277, 278, 20 Jul. 2009
Architectural Institute of Japan, Japanese

20140 Parametric Analysis of RC Frame Structures including Beam-Column Joint Deformations
SAITO Takasuke, KOSHIKAWA Takeaki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2009, 279, 280, 20 Jul. 2009
Architectural Institute of Japan, Japanese

21424 A Three-layer Multi-spring Model for Rubber Bearings under Eccentric Bending
ISHII Ken, KIKUCHI Masaru, KITAMURA Yoshihisa, NAKAMURA Takahito, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2009, 847, 848, 20 Jul. 2009
Architectural Institute of Japan, Japanese

21413 Analysis of the Behavior of Square Lead-rubber Bearings under Sever Conditions : Part1 Analytical Model
FUJITA Yukinori, KIKUCHI Masaru, NAKAMURA Takahito, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2009, 825, 826, 20 Jul. 2009
Architectural Institute of Japan, Japanese

21414 Analysis of the Behavior of Square Lead-rubber Bearings under Sever Conditions : Part2 Shear Loading Tests
NAKAMURA Takahito, KIKUCHI Masaru, NISHIMURA Takuya, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2009, 827, 828, 20 Jul. 2009
Architectural Institute of Japan, Japanese

21415 Analysis of the Behavior of Square Lead-rubber Bearings under Sever Conditions : Part3 Verification of the Analysis method
KIKUCHI Masaru, NAKAMURA Takahito, TAMURA Kazuo, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2009, 829, 830, 20 Jul. 2009
Architectural Institute of Japan, Japanese

23422 Cyclic Loading Test on Unbonded PCaPC Interior and Exterior Beam-Column joint with Steelband
YAMASHITA Hitoshi, MIZOGUCHI Mitsuo, KOSHIKAWA Takeaki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. C-2, Structures IV, Reinforced concrete structures prestressed concrete structures masonry wall structures, 2009, 865, 866, 20 Jul. 2009
Architectural Institute of Japan, Japanese

010 A Three-layer Multi-spring Model for Rubber Bearings under Eccentric Bending
ISHII Ken, 日本建築学会北海道支部研究報告集, 82, 37, 40, Jul. 2009
Architectural Institute of Japan, Japanese

012 Structural performance of the Sapporo television tower
OKAGAWA Satoshi, 日本建築学会北海道支部研究報告集, 82, 45, 48, Jul. 2009
Architectural Institute of Japan, Japanese

019 Parametric Analysis of RC Frame Structures including Beam-Column Joint Deformations
SAITO Takasuke, 日本建築学会北海道支部研究報告集, 82, 73, 76, Jul. 2009
Architectural Institute of Japan, Japanese

020 Material Non-Linear Analysis of Three-Dimensional RC Frame Structures considering Shear Deformation of Joint
HISADA Masahiro, 日本建築学会北海道支部研究報告集, 82, 77, 80, Jul. 2009
Architectural Institute of Japan, Japanese

025 Failure Mechanism and Strain Softening Characteristics of Concrete Subjected to Uniaxial Compression
MURAMATSU Shinya, 日本建築学会北海道支部研究報告集, 82, 99, 102, Jul. 2009
Architectural Institute of Japan, Japanese

115 Basic Studies of Unbonded Post-Tensioned Concrete Subassembly with Damper
YANO Takahiro, 日本建築学会北海道支部研究報告集, 82, 463, 466, Jul. 2009
Architectural Institute of Japan, Japanese

A three-dimensional multi-spring model for square lead-rubber bearings under large shear deformations
Masaru Kikuchi, Sachie Yamamoto, Takahito Nakamura, Takuya Nishimura, Kazuo Tamura, Journal of Structural and Construction Engineering, 74, 638, 647, 655, Apr. 2009
The paper describes a new analytical model for predicting the large displacement behavior of square lead-rubber isolation bearings. The present model is developed by extending to three dimensions an existing model for elastomeric isolation bearings under severe axial loads and shear deformations. Static loading tests of square lead-rubber bearings are performed to investigate the effect of loading direction on bearing behavior. The test results showed that the ultimate behavior is strongly influenced by loading direction, especially for large shear deformation and high axial load. The results of analyses using the new model show very good agreement with the experimental results., Japanese

A mechanical model for elastomeric seismic isolation bearings including the influence of axial load
Sachie Yamamoto, Masaru Kikuchi, Masaiki Ueda, Ian D. Aiken, EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 38, 2, 157, 180, Feb. 2009
For the purpose of predicting the large-displacement response of seismically isolated buildings, an analytical model for elastomeric isolation bearings is proposed. The model comprises shear and axial springs and a series of axial springs at the top and bottom boundaries. The properties of elastomeric bearings vary with the imposed vertical load. At large shear deformations, elastomeric bearings exhibit stiffening behavior under low axial stress and buckling under high axial stress. These properties depend on the interaction between the shear and axial forces. The proposed model includes interaction between shear and axial forces, nonlinear hysteresis, and dependence on axial stress. To confirm the validity of the model, analyses are performed for actual static loading tests of lead-rubber isolation bearings. The results of analyses using the new model show very good agreement with the experimental results. Seismic response analyses with the new model are also Conducted to demonstrate the behavior of' isolated buildings under severe earthquake excitations. The results obtained from the analyses with the new model differ in some cases from those given by existing models. Copyright (C) 2008 John Wiley & Sons, Ltd., JOHN WILEY & SONS LTD, English

Characteristics of large-deformation behaviors of natural rubber bearings on simultaneously varing vertical load and shear deformation　　　　　　　　　　　　　　　
55B, 517, 525, 2009

The properties of lead-rubber beearing including the influence of varying vertical load under severe conditions
Sachie Yamamoto, Masaru Kikuchi, Takeaki Koshikawa, Masaiki Ueda, Journal of Structural and Construction Engineering, 73, 634, 2101, 2110, Dec. 2008
The widespread use of isolation has necessitated a better understanding of the more complex aspects of isolation device behvior. The porperties of seismic isolation devices depend upon the interaction between horizontal and vertical forces acting on the isolator. The actural hysteretic behavior of an isolation bearing under a structure subjected to severe earthwuake shaking is influenced by the variation of vertical load on the islator due to overturing forces. To identify the mechanical charcteristcs of lead-rubber isolators, cyclic shear tests of isolators under varying vetical load were conducted. The authors propose an analytical model for predicting the behavior of islators under varying vertical load conditions. The model can reflect the influence of verying vertical load on islator properties, and thios capability is confirmed by simulation analyses and comparison with the cyclic shear test results. The analytical model is also used to investigate the behavior of lead-rubber isolators under loadings more severe than typical design conditions., Japanese

23092 Uniaxial Compressive Failure Tests of Concrete using Strain Feedback Control
KOSHIKAWA Takeaki, SAITO Takasuke, UEDA Masaiki, KIKUCHI Masaru, WADA Toshinaga, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. C-2, Structures IV, Reinforced concrete structures prestressed concrete structures masonry wall structures, 2008, 233, 234, 20 Jul. 2008
Architectural Institute of Japan, Japanese

21195 Properties of Lead-Rubber Bearings Including the Influence of Varying Vertical Load : Part 2 Properties under Large Shear Strain and Vertical Load
YAMAMOTO Sachie, KIKUCHI Masaru, KOSHIKAWA Takeaki, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2008, 389, 390, 20 Jul. 2008
Architectural Institute of Japan, Japanese

21174 On High Frequency Properties of Floor Response Spectra of Base-isolated Structure
NISHIMURA Takuya, TAMURA Kazuo, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2008, 347, 348, 20 Jul. 2008
Architectural Institute of Japan, Japanese

21194 Properties of Lead-Rubber Bearings Including the Influence of Varying Vertical Load : Part 1 Tests with Varying Vertical Load
KIKUCHI Masaru, YAMAMOTO Sachie, KOSHIKAWA Takeaki, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2008, 387, 388, 20 Jul. 2008
Architectural Institute of Japan, Japanese

21186 Mechanical characteristic of rubber bearing with angled flange plates : (Part 1) Outline of experiments for rotational property
KITAMURA Yoshihisa, SARUTA Masaaki, NISHIMURA Takuya, ISHII Ken, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2008, 371, 372, 20 Jul. 2008
Architectural Institute of Japan, Japanese

21187 Mechanical Characteristic of Rubber Bearing with Angled Flange Plates : (Part 2) Results of Experiments for Rotational Property
ISHII Ken, KIKUCHI Masaru, SARUTA Masaaki, NISHIMURA Takuya, KITAMURA Yoshihisa, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2008, 373, 374, 20 Jul. 2008
Architectural Institute of Japan, Japanese

20157 Hysteretic Behavior Analysis of Three-Dimensional RC Frames considering Bond-Slip of Reinforcement
SAITO Takasuke, KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2008, 313, 314, 20 Jul. 2008
Architectural Institute of Japan, Japanese

036 Material Non-Linear Analysis of Three-Dimensional RC Frame Structures considering Bond-Slip of reinforcement
HISADA Masahiro, 日本建築学会北海道支部研究報告集, 81, 147, 150, 28 Jun. 2008
Architectural Institute of Japan, Japanese

021 An Analytical Model at Small Shear Strains for Seismic Isolation Bearings Based on Seismic Response Observations
KIKUCHI Masaru, 日本建築学会北海道支部研究報告集, 81, 83, 86, 28 Jun. 2008
Architectural Institute of Japan, Japanese

037 Dynamic Non-linear Analysis of Reinforced Concrete Beams and Columns Including Bond Slip of Reinforcement
OHSHIMA Mayu, 日本建築学会北海道支部研究報告集, 81, 151, 154, 28 Jun. 2008
Architectural Institute of Japan, Japanese

020 Properties of Elastomeric Isolation Bearings Including the Influence of Axial Load
YAMAMOTO Sachie, 日本建築学会北海道支部研究報告集, 81, 79, 82, 28 Jun. 2008
Architectural Institute of Japan, Japanese

018 Mechanical properties evaluation using discrete multi-spring model for seismic isolation bearings
ISHII ken, 日本建築学会北海道支部研究報告集, 81, 69, 72, 28 Jun. 2008
Architectural Institute of Japan, Japanese

On the response of yielding seismically isolated structures
Masaru Kikuchi, Cameron J. Black, Ian D. Aiken, EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 37, 5, 659, 679, Apr. 2008
This paper investigates the seismic response of yielding isolated structures. To establish a general understanding of the nonlinear response of seismically isolated structures, this study first investigates the nonlinear response of isolated structures subjected to steady-state harmonic motion and nonlinear transient ground excitation. The response of both viscously damped and hysteretically damped isolation systems is investigated in three phases. Initially, basic insights are gained through simple nonlinear two degrees of freedom (2-DOF) models subjected to harmonic motion of varying frequencies. Next, the transient response analysis of the nonlinear 2-DOF model is investigated for a wide range of isolation system and superstructure properties. The results obtained from both approaches indicate that the yielding behavior of a structure on an isolation system is significantly different from that of the comparable fixed-base structure. Finally, the response of the nonlinear 2-DOF system model is compared with that of a 15-story, three-dimensional model. Based on the results of these analytical investigations, some important considerations for the design of seismically isolated structures are presented. Copyright (C) 2007 John Wiley & Sons, Ltd., JOHN WILEY & SONS LTD, English

3016 フィードバック制御を用いたコンクリートの一軸圧縮破壊実験(構成則)
越川 武晃, 上田 正生, 菊地 優, 和田 俊良, コンクリート工学年次論文集, 30, 3, 91, 96, 2008
一軸圧縮力を受けるコンクリートのポストピーク挙動を安定的に測定することを目的に,ひずみ量を制御対象として載荷を行うフィードバック制御を用いた測定・制御システムを構築し,寸法と圧縮強度を変化させたコンクリート円柱試験体に対してこのシステムを用いた一軸圧縮破壊実験を行った。実験結果から,最大圧縮応力,相対応力-ひずみ関係,ひずみ分布の推移と破壊状況,および相対応力-変位関係を示し,載荷時に破壊の局所化領域におけるひずみ量を定速制御することで,単調載荷に近い状態のポストピーク挙動を測定できる可能性を示した。, 日本コンクリート工学協会, Japanese

3012 柱梁接合部における主筋の付着すべりを考慮したRC立体骨組の履歴挙動解析(構造解析)
齊藤 隆典, 越川 武晃, 上田 生, 菊地 優, コンクリート工学年次論文集, 30, 3, 67, 72, 2008
本論文は,接合部内部に通し配筋された主筋の付着すべりを表現可能な3次元RC接合部要素を新たに提案し,この要素を用いたRC立体骨組の材料非線形解析法について報告するものである。本論文ではまず,新たに提案する3次元RC接合部要素の構成手法を中心としたRC立体骨組の解析法について論じている。更に,既往の実験結果を対象とした数値計算例より本解析法の妥当性の検証を行い,特に2方向載荷を受けるRC立体骨組において,柱梁接合部を含む部材中の主筋の付着すべりが骨組全体の変形挙動に及ぼす影響について考察を行っている。, 日本コンクリート工学協会, Japanese

21260 Dynamic Performance of The Hakodate Goryokaku Tower : Part 1. Structural Design of The Tower
YOKOYAMA Kazutomo, FUKUKITA Akira, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2007, 519, 520, 31 Jul. 2007
Architectural Institute of Japan, Japanese

21261 Dynamic Performance of The Hakodate Goryokaku Tower : Part 2. Analysis for Observed Vibration
FUKUKITA Akira, YOKOYAMA Kazutomo, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2007, 521, 522, 31 Jul. 2007
Architectural Institute of Japan, Japanese

21468 Analysis for Behavior of Seismically-Isolated Buildings Using Multi-Spring Mechanical Model : Part2 Seismic Response Analyses
YAMAMOTO Sachie, KIKUCHI Masare, KOSHIKAWA Takeaki, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2007, 935, 936, 31 Jul. 2007
Architectural Institute of Japan, Japanese

21467 Analysis for Behavior of Seismically-Isolated Buildings Using Multi-Spring Mechanical Model : Part1 A Multi-Spring Mechanical Model
KIKUCHI Masaru, YAMAMOTO Sachie, KOSHIKAWA Takeaki, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2007, 933, 934, 31 Jul. 2007
Architectural Institute of Japan, Japanese

21456 An Analytical Model at Small Strains for High Damping Rubber Bearings Based on Seismic Response Records
TAKEDA Yusuke, KIKUCHI Masaru, MORIHIRO Kazuyuki, KOSHIKAWA Takeaki, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2007, 911, 912, 31 Jul. 2007
Architectural Institute of Japan, Japanese

20126 Hysteretic Behavior Analysis of RC Frame Structure considering Shear Deformation of Joint
SAITO Takasuke, KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2007, 251, 252, 31 Jul. 2007
Architectural Institute of Japan, Japanese

23010 Automatic Compression Test of Concrete Specimen using Localized Strain as Feedback Signal
KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, WADA Toshinaga, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. C-2, Structures IV, Reinforced concrete structures prestressed concrete structures masonry wall structures, 2007, 37, 38, 31 Jul. 2007
Architectural Institute of Japan, Japanese

017 Hysteresis Model of Precast Prestressed Concrete Beams with Unbonded Tendons
KOBAYASHI Masahito, 日本建築学会北海道支部研究報告集, 80, 67, 70, 21 Jul. 2007
Architectural Institute of Japan, Japanese

034 Automatic Compression Test of Concrete Specimen using Localized Strain as Feedback Signal
KOSHIKAWA Takeaki, 日本建築学会北海道支部研究報告集, 80, 141, 144, 21 Jul. 2007
Architectural Institute of Japan, Japanese

019 A Multi-Spring Mechanical Model for Elastomeric Isolation Bearings
YAMAMOTO Sachie, 日本建築学会北海道支部研究報告集, 80, 75, 78, 21 Jul. 2007
Architectural Institute of Japan, Japanese

023 Structural Study on Historically Important Buildings based on Regional Conditions of Earthquakes in Hokkaido : Part 2; Seismic Performance of the Former Hokkaido Government Office Building
KIKUCHI Masaru, 日本建築学会北海道支部研究報告集, 80, 93, 98, 21 Jul. 2007
Architectural Institute of Japan, Japanese

022 Structural Study on Historically Important Buildings based on Regional Conditions of Earthquakes in Hokkaido : Part 1; Evaluation of Strong Motions by Hypothetical Close-by Sapporo Earthquakes
ISHII Toru, 日本建築学会北海道支部研究報告集, 80, 87, 92, 21 Jul. 2007
Architectural Institute of Japan, Japanese

026 Dynamic Performance of The Hakodate Goryokaku Tower : Part 1. Structural Design of The Tower
YOKOYAMA Kazutomo, 日本建築学会北海道支部研究報告集, 80, 109, 112, 21 Jul. 2007
Architectural Institute of Japan, Japanese

018 An Analytical Model at Small Strains for High Damping Rubber Bearings Based on Seismic Response Records
TAKEDA Yusuke, 日本建築学会北海道支部研究報告集, 80, 71, 74, 21 Jul. 2007
Architectural Institute of Japan, Japanese

027 Dynamic Performance of The Hakodate Goryokaku Tower : Part 2. Analysis for Observed Vibration
FUKUKITA Akira, 日本建築学会北海道支部研究報告集, 80, 113, 116, 21 Jul. 2007
Architectural Institute of Japan, Japanese

014 Material Non-Linear Analysis of RC Frame Structure considering Shear Deformation of Joint Panel
SAITO Takasuke, 日本建築学会北海道支部研究報告集, 80, 55, 58, 21 Jul. 2007
Architectural Institute of Japan, Japanese

096 Strengthening Method of Existing R/C Flat Slab using External Prestressing Tendons
MORIHIRO Kazuyuki, 日本建築学会北海道支部研究報告集, 80, 397, 400, 21 Jul. 2007
Architectural Institute of Japan, Japanese

Strengthening method for reinforced concrete flat slab using external prestressing cables
Kazuyuki Morihiro, Masaiki Ueda, Takeaki Koshikawa, Masaru Kikuchi, AIJ Journal of Technology and Design, 13, 25, 137, 142, Jun. 2007, [Domestic magazines]
Conversion of an existing reinforced concrete building was done. In that case, several spans of flat slab structure of the building came to have to support the large increase of live load. In order to attain that purpose, a special strengthening plan using external prestressing cables was proposed, and reinforcement work was actually performed. This paper describes the design plan and the reinforcement work for the flat slab panels., Japanese

Strengthening method for reinforced concrete flat slab using external prestressing cables
Kazuyuki Morihiro, Masaiki Ueda, Takeaki Koshikawa, Masaru Kikuchi, AIJ Journal of Technology and Design, 13, 25, 137, 142, Jun. 2007
Conversion of an existing reinforced concrete building was done. In that case, several spans of flat slab structure of the building came to have to support the large increase of live load. In order to attain that purpose, a special strengthening plan using external prestressing cables was proposed, and reinforcement work was actually performed. This paper describes the design plan and the reinforcement work for the flat slab panels., Japanese

Non-linear behavior analysis R/C frame structure considering shear deformation of joint　　　　　　　　　　　　　　　
618, 99, 106, 2007

A multi-spring model for elastomeric isolation bearings under severe axial loads and shear deformations　　　　　　　　　　　　　　　
J. Struct. Constr. Eng., AIJ, 618, 81, 88, 2007

An analytical model for lead-rubber bearing under large deformations　　　　　　　　　　　　　　　
53B, 9, 16, 2007

20140 Hysteretic Behavior of Precast Concrete Subassemblages with Hybrid Post-Tensioned Connection
KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, SAITO Takasuke, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2006, 279, 280, 31 Jul. 2006
Architectural Institute of Japan, Japanese

20139 Hysteretic Behavior Analysis of R/C Frame Structures considering Bond-Slip Distribution in Joint
SAITO Takasuke, KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2006, 277, 278, 31 Jul. 2006
Architectural Institute of Japan, Japanese

21280 The Behavior of Seismically-Isolated Buildings Considering the Large-Deformation Characteristics of Laminated Rubber Bearings : Part1 An Analytical Model
KIKUCHI Masaru, KOSHIKAWA Takeaki, YAMAMOTO Sachie, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2006, 559, 560, 31 Jul. 2006
Architectural Institute of Japan, Japanese

21281 The Behavior of Seismically-Isolated Buildings Considering the Large-Deformation Characteristics of Laminated Rubber Bearings : Part2 Seismic Response Analyses
YAMAMOTO Sachie, KOSHIKAWA Takeaki, KIKUCHI Masaru, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2006, 561, 562, 31 Jul. 2006
Architectural Institute of Japan, Japanese

102 Retrofit of Existing RC Slab using Outer Prestressing Cables
MORIHIRO Kazuyuki, 日本建築学会北海道支部研究報告集, 79, 419, 422, 01 Jul. 2006
Architectural Institute of Japan, Japanese

026 Structural Performance of Precast Concrete Beam-to-Column Subassemblages with Hybrid Post-Tensioned Connection
KOBAYASHI Masahito, 日本建築学会北海道支部研究報告集, 79, 101, 104, 01 Jul. 2006
Architectural Institute of Japan, Japanese

027 Material Non-Linear Analysis of R/C Frame Structures under Cyclic Loading considering Bond-Slip Distribution of Main Reinforcement in Joint
SAITO Takasuke, 日本建築学会北海道支部研究報告集, 79, 105, 108, 01 Jul. 2006
Architectural Institute of Japan, Japanese

013 Seismic Performance of United Church of Christ in Hakodate
Takeda Yusuke, 日本建築学会北海道支部研究報告集, 79, 51, 54, 01 Jul. 2006
Architectural Institute of Japan, Japanese

Free vibration analysis by the superposition method of rectangular Mindlin plates with internal columns resting on uniform elastic edge supports
F Ohya, M Ueda, T Uchiyama, M Kikuchi, JOURNAL OF SOUND AND VIBRATION, 289, 1-2, 1, 24, Jan. 2006
Free vibration analysis of rectangular Mindlin plates is carried out via the superposition method and is shown to produce accurate results. The analytical method proposed by the authors in this paper solves the problem for the case where the plate has simultaneous elastic edge and internal supports. The conditions of edge supports are uniform lateral, rotational and torsional elastic supports, whereas, the internal supports are column supports with finite area. Compatibility between the plate and column is achieved by requiring that the column and plate rotations be equal. The results presented herein are verified through comparison with results presented by others. Numerical examples presented in this study confirm that the analytical method is able to model the property of the elastic edge supports while simultaneously considering the effect of column restraint, an effect which increases with column number and area. (c) 2005 Elsevier Ltd. All rights reserved., ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, English

Seismic hazard analysis based on fault rupture scenarios and their occurrence probability
DAN Kazuo, KAMBARA Hiroshi, FUJIKAWA Satoshi, KIKUCHI Masaru, J. Struct. Constr. Eng., AIJ, 71, 602, 119, 128, 2006
Prediction technique of strong ground motions has been intensively developed in Japan since the 1995 Hyogo-Ken Nanbu earthquake (M_J 7.3), and it has been applied to the practical prediction for inland earthquakes and plate-boundary earthquakes by Japanese Government. On the other hand, recent earthquakes of the 2001 Geiyo earthquake (M_J 6.4) and the 2004 Mid Niigata prefecture earthquake (M_J 6.8) arose not only requirements of safety of lives and structural elements but also requirements of function of equipments and industrial lines. These requirements are well realized in the performance-based design of structures. Hence, we proposed a method of seismic hazard analysis based on fault rupture scenarios and their occurrence probability for implementation of strong ground motions predicted by fault models in performance-based design of structures., Architectural Institute of Japan, Japanese

Large deformation/post-peak behavior analysis of concrete beams and columns including bond-slip of reinforcement　　　　　　　　　　　　　　　
J. Struct. Constr. Eng., AIJ, 580, 69, 76, 2006

The behavior of seismically-isolated buildings considering the large deformation characteristics of laminated rubber bearings　　　　　　　　　　　　　　　
52B, 221, 229, 2006

Hysteretic behavior analysis of RC frames considering factors that affect bond characteristics of reinforcement　　　　　　　　　　　　　　　
52B, 101, 108, 2006

21348 A Study on Seismic Responses of Isolated Buildings with Eccentricity
KUMAGAI shuji, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2005, 695, 696, 31 Jul. 2005
Architectural Institute of Japan, Japanese

20197 Large Deformation/Post Peak Behavior Analysis of RC Beams and Columns
KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2005, 393, 394, 31 Jul. 2005
Architectural Institute of Japan, Japanese

20198 Large Deflection/Post-Peak Behavior Analysis of Concrete Slabs Considering the Bond-Slip of Reinforcement
MIZUNO Masae, UEDA Masaiki, KOSHIKAWA Takeaki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2005, 395, 396, 31 Jul. 2005
Architectural Institute of Japan, Japanese

20201 Free Vibration Analysis of RC Frame Considering Bond-Slip of Reinforcement
INOUE Keiichi, KIKUCHI Masaru, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2005, 401, 402, 31 Jul. 2005
Architectural Institute of Japan, Japanese

012 Seismic Performance of The Hokkaido University Administration-Bureau Building
Kibata Masaaki, 日本建築学会北海道支部研究報告集, 78, 45, 50, 16 Jul. 2005
Architectural Institute of Japan, Japanese

013 Seismic Performance of The Mitsui Bank Otaru branch building
MATSUI Nozomu, 日本建築学会北海道支部研究報告集, 78, 51, 54, 16 Jul. 2005
Architectural Institute of Japan, Japanese

018 Free Vibration Analysis of RC Frame including Bond Slip of Reinforcements
INOUE Keiichi, 日本建築学会北海道支部研究報告集, 78, 71, 74, 16 Jul. 2005
Architectural Institute of Japan, Japanese

021 Seismic Load Distribution of Isolated Buildings with Hysteretically-damped Isolation Bearing.
KIKUCHI Masaru, 日本建築学会北海道支部研究報告集, 78, 83, 88, 16 Jul. 2005
Architectural Institute of Japan, Japanese

015 Evaluation of Strong Motions by the Earthquake along the West Side of Hakodate Plane
ISHII Toru, KIKUCHI Masaru, 日本建築学会北海道支部研究報告集, 78, 59, 62, 16 Jul. 2005
Architectural Institute of Japan, Japanese

093 Large Deflection/Post-Peak Analysis of Reinforced Concrete Slab Considering The Bond Slip Between Concrete And Reinforcement.
MIZUNO Masae, 日本建築学会北海道支部研究報告集, 78, 385, 388, 16 Jul. 2005
Architectural Institute of Japan, Japanese

031 Large Deformation / Post Peak Behavior Analysis of RC Beams and Columns
KOSHIKAWA Takeaki, 日本建築学会北海道支部研究報告集, 78, 127, 130, 16 Jul. 2005
Architectural Institute of Japan, Japanese

094 Material Non-Linear Analysis of RC Frames considering Bond-Slip in Beam-Column Joint
SAITO Takasuke, 日本建築学会北海道支部研究報告集, 78, 389, 392, 16 Jul. 2005
Architectural Institute of Japan, Japanese

Large deflection/post peak analysis of reinforced concrete slabs considering the effect of bond-slip of reinforcement　　　　　　　　　　　　　　　
J. Struct. Constr. Eng., AIJ, 602, 153, 160, 2005

Non-linear steady-state vibration of seismically-isolated structures with hysteretically-damped isolation system
KIKUCHI Masaru, YAMAMOTO Sachie, TAMURA Kazuo, UEDA Masaiki, J. Struct. Constr. Eng., AIJ, 70, 592, 75, 82, 2005
The study of the steady-state vibration of a system under sinusoidal excitation can provide important insights into the more general dynamic response structures. The response of seismically-isolated structures with viscously-damped isolation system was previously studied by the authors. This paper presents the non-linear steady-state vibration of seismically-isolated structures with hysteretically-damping isolation system. The solution method for the steady-state vibration of the non-linear system is based on the work of Tajimi, and expanded to seismically-isolated structures. The non-linear superstructure behavior is significantly different from that of fixed-base structure. Consequently, the important aspects for isolated structure design is highlighted., Architectural Institute of Japan, Japanese

Free vibration analysis of slabs in flat plate structures resting on uniformly elastic edge supports
OHYA Fumito, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru, J. Struct. Constr. Eng., AIJ, 70, 588, 95, 102, 2005
The use of flat-plate structures have increased because this type of structure can realize optimum and flexible space utilization. In the application of flat-plate structures, slab resonance should be an important consideration, because of potential problems such as incorrect operation of equipment in manufacturing facilities or occupant discomfort in residential structures. However there are few studies on the free vibration analysis of slabs within flat-plate structures. In this paper, the free vibration analyses of plates with columns resting on lateral, rotational and torsional elastic edge supports uniformly are carried out by use of the superposition method based on the Mindlin plate theory. In order to study the vibration properties of the plate, column size, plate aspect ratio and plate thickness ratio are set up as evaluation parameters., Architectural Institute of Japan, Japanese

20184 Dynamic Response Analysis of RC Beams including Bond Slip of Reinforcement
INOUE Keiichi, KIKUCHI Masaru, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2004, 367, 368, 31 Jul. 2004
Architectural Institute of Japan, Japanese

20170 Free Vibration Analysis of Slabs Resting on Uniformly Elastic Edge Supports in Flat Plate Structures
OHYA Fumito, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2004, 339, 340, 31 Jul. 2004
Architectural Institute of Japan, Japanese

20183 Material Non-linear Analysis of PCaPC Beams with Compression Joint considering Bond-Slip of Tendon under Cyclic Loading
SAITO Takasuke, KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2004, 365, 366, 31 Jul. 2004
Architectural Institute of Japan, Japanese

21165 Steady-state non-linear vibrations of a seismic isolated structure : Part 2. Study for hysteretic damping isolation system
KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2004, 329, 330, 31 Jul. 2004
Architectural Institute of Japan, Japanese

20181 Material Nonlinear Analysis of RC Timoshenko Beams considering the Effect of Transverse Shear Stresses
KOSHIKAWA Takeaki, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru, WADA Toshinaga, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2004, 361, 362, 31 Jul. 2004
Architectural Institute of Japan, Japanese

008 Free Vibration Analysis of Slabs Resting on Uniformly Elastic Edge Supports in Flat Plate Structures
OHYA Fumito, 日本建築学会北海道支部研究報告集, 77, 31, 34, 03 Jul. 2004
Architectural Institute of Japan, Japanese

043 Steady-state Non-linear Vibrations of a Seismic Isolated Structure. : Part 2. Study for Hysteretic Damping Isolation System
KIKUCHI Masaru, 日本建築学会北海道支部研究報告集, 77, 177, 180, 03 Jul. 2004
Architectural Institute of Japan, Japanese

009 Elastic finite element analysis of RC composite section beam with two horizontal joints
TAKANO Genta, 日本建築学会北海道支部研究報告集, 77, 35, 38, 03 Jul. 2004
Architectural Institute of Japan, Japanese

013 Material Non-linear Analysis of PCaPC Beams with Compression Joint considering Bond-Slip of Tendon under Cyclic Loading
SAITO Takasuke, 日本建築学会北海道支部研究報告集, 77, 51, 54, 03 Jul. 2004
Architectural Institute of Japan, Japanese

042 An Analytical Hysteresis Model of Steel Damper for Seismic Isolation System
YAMAMOTO Sachie, 日本建築学会北海道支部研究報告集, 77, 173, 176, 03 Jul. 2004
Architectural Institute of Japan, Japanese

010 Dynamic Response Analysis of RC Beams including Bond Slip of Reinforcements
INOUE Keiichi, 日本建築学会北海道支部研究報告集, 77, 39, 42, 03 Jul. 2004
Architectural Institute of Japan, Japanese

012 Material Nonlinear Analysis of RC Timoshenko Beams considering the Effect of Transverse Shear Stresses
KOSHIKAWA Takeaki, 日本建築学会北海道支部研究報告集, 77, 47, 50, 03 Jul. 2004
Architectural Institute of Japan, Japanese

044 Seismic Load Distribution of Isolated Buildings.
OSAWA Tatsuhiko, 日本建築学会北海道支部研究報告集, 77, 181, 184, 03 Jul. 2004
Architectural Institute of Japan, Japanese

平成15年十勝沖地震での免震の効果/釧路市内の免震建物 (特集 免震が建築デザインを変える) -- (第1章 免震が建築デザインを変える)
菊地 優, 建築技術, 651, 102, 105, Apr. 2004
建築技術, Japanese

補強材の付着すべりを考慮したコンクリート梁部材の自由振動解析　　　　　　　　　　　　　　　
日本建築学会構造系論文集, 580, 77, 84, 2004

緊張鋼材の付着すべりを考慮した圧着型PcaPC梁－柱部材の履歴挙動解析　　　　　　　　　　　　　　　
コンクリート工学年次論文集, 26, 2, 37, 42, 2004

Free vibration analysis of concrete beam member considering bond-slip of reinforcements　　　　　　　　　　　　　　　
J. Strcut. Constr. Eng., AIJ, 580, 77, 84, 2004

Free vibration analysis of slabs in flat plate structures, (Part2) Case of the slab resting on lateral and rotational elastic edge support uniformly
OHYA Fumito, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru, Journal of structural engineering. B, 50, 50B, 269, 277, 2004
The use of flat-plate structures will increase in the future because this type of structure can realize optimum and flexible space utilization. In the application of flat-plate structures, slab resonance should be an important consideration, because of potential problems such as incorrect operation of equipment in manufacturing facilities or occupant discomfort in residential structures. However there are few studies on the free vibration analysis of slabs within flat-plate structures. In this study the free vibration analyses of plates with columns resting on lateral and rotational elastic edge support uniformly are carried out by use of the superposition method which based on Mindlin plate theory. In order to study the vibration properties of the plate, column size and plate thickness ratio are set up as evaluation parameters., Architectural Institute of Japan, Japanese

Non-linear steady-state vibration of seismically-isolated structures with viscously-damped isolation systems　　　　　　　　　　　　　　　
J. Struct. Constr. Eng., AIJ, 576, 63, 70, 2004

Finite element analysis of reinforced concrete slabs considering transverse shear deformations and reinforcement bond slip　　　　　　　　　　　　　　　
50B, 279, 285, 2004

Large Deflection Analysis of PC beams including Bond Slip of Reinforcement by Incremental Arch-Length Method
KOSHIKAWA Takeaki, UEDA Masaiki, KIKUCHI Masaru, UCHIYAMA Takeshi, プレストレストコンクリートの発展に関するシンポジウム論文集, 12, 149, 152, 25 Sep. 2003
Japanese

20155 Free Vibration Analysis of Slabs in Flat Plate Structures : Case of the slab resting all edges lateral elastic supported uniformity
OHYA Fumito, UEDA Masaiki, UCHIYAMA Takeshi, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2003, 309, 310, 30 Jul. 2003
Architectural Institute of Japan, Japanese

20158 Material Nonlinear Analysis of Reinforced Concrete Slab Considering The Bond Slip of Reinforcement
MIZUNO Masae, UEDA Masaiki, KIKUCHI Masaru, UCHIYAMA Takesi, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2003, 315, 316, 30 Jul. 2003
Architectural Institute of Japan, Japanese

20157 Formulation for Free Vibration Analysis of RC Beams Considering Bond-Slip of Reinforcements
INOUE Keiichi, KIKUCHI Masaru, UEDA Masaiki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2003, 313, 314, 30 Jul. 2003
Architectural Institute of Japan, Japanese

20159 Large Deflection Analysis of RC Beams under Biaxial Bending including Bond Slip of Reinforcement
KOSHIKAWA Takeaki, UEDA Masaiki, UCHIYAMA Takeshi, WADA Toshinaga, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-1, Structures I, Loads, reliability stress analyses foundation structures shell structures, space frames and membrane structures, 2003, 317, 318, 30 Jul. 2003
Architectural Institute of Japan, Japanese

21229 Steady-state non-linear vibrations of a seismic isolated structure : Part 1. Study for viscous damping isolation system
KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2003, 457, 458, 30 Jul. 2003
Architectural Institute of Japan, Japanese

21250 Study on seismic design load distribution for isolated buildings
KITAMURA Yoshihisa, KIKUCHI Masaru, OHSAWA Tatsuhiko, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2003, 499, 500, 30 Jul. 2003
Architectural Institute of Japan, Japanese

012 Free Vibration Analysis of Slabs in Flat Plate Structures : Case of the slab resting all edges lateral elastic supported uniformly
OHYA Fumito, 日本建築学会北海道支部研究報告集, 76, 45, 48, 27 Jun. 2003
Architectural Institute of Japan, Japanese

031 Material Nonlinear Analysis of Reinforced Concrete Slab Considering The Bond Slip Between Concrete And Reinforcement.
MIZUNO Masae, 日本建築学会北海道支部研究報告集, 76, 133, 136, 27 Jun. 2003
Architectural Institute of Japan, Japanese

028 Free Vibration Analysis of RC Beams Considering Bond-Slip of Reinforcements
INOUE Keiichi, 日本建築学会北海道支部研究報告集, 76, 119, 124, 27 Jun. 2003
Architectural Institute of Japan, Japanese

015 Steady-state Non-linear Vibrations of a Seismic Isolated Structure. : Part 1. Study for Viscous Damping Isolation System
KIKUCHI Masaru, 日本建築学会北海道支部研究報告集, 76, 57, 60, 27 Jun. 2003
Architectural Institute of Japan, Japanese

029 Large Deflection Analysis of RC Beams under Biaxial Bending including Bond Slip of Reinforcement
KOSHIKAWA Takeaki, 日本建築学会北海道支部研究報告集, 76, 125, 128, 27 Jun. 2003
Architectural Institute of Japan, Japanese

013 Seismic Response Analyses of Isolated Buildings with Eccentricity
KUMAGAI Shuji, 日本建築学会北海道支部研究報告集, 76, 49, 52, 27 Jun. 2003
Architectural Institute of Japan, Japanese

014 Seismic Load Distribution of Isolated Buildings based on Design Standard.
OSAWA Tatsuhiko, 日本建築学会北海道支部研究報告集, 76, 53, 56, 27 Jun. 2003
Architectural Institute of Japan, Japanese

補強材の付着すべりを考慮した鉄筋コンクリート床板の材料非線形解析
日本建築学会構造系論文集, 569, 55, 63, 2003

やじろべえ型免震構造（SFS21）の開発　　　　　　　　　　　　　　　
日本建築学会技術報告集, 17, 107, 112, 2003

フラットプレート構造物のスラブの鉛直自由振動解析　　　　　　　　　　　　　　　
構造工学論文集, 49B, 275, 282, 2003

履歴減衰型免震部材の復元力モデルに関する研究
日本建築学会構造系論文集, 565, 63, 71, 2003

補強材の付着すべりを考慮した２軸曲げを受けるコンクリート梁部材の大変形解析　　　　　　　　　　　　　　　
コンクリート工学年次論文集, 25, 2, 445, 450, 2003

Material nonlinear analysis of reinforced concrete slabs considering the effect of bond-slip of reinforcement
MIZUNO Masae, UEDA Masaiki, KIKUCHI Masaru, UCHIYAMA Takeshi, J. Struct. Constr. Eng., AIJ, 68, 569, 55, 63, 2003
This paper deals with the material nonlinear analysis of reinforced concrete slabs considering the effect of bond slip of reinforcement. Only a small number of studies have been reported in the literature that approximately consider the effect of reinforcement bond slip in two-way reinforced concrete slabs, and almost no cases are found in which material nonlinear analysis is used to rigorously consider the effect. In this paper a potential energy functional is first derived, and then a finite element formulation of the problem is implemented. In order to verify the analytical method five numerical examples are given and the results compared with experimental results., Architectural Institute of Japan, Japanese

Development of isolated balanced structure (SeismicFree system 21)　　　　　　　　　　　　　　　
AIJ J. Technol. Des., 17, 107, 112, 2003

Free vibration analysis of slabs in flat plate structures　　　　　　　　　　　　　　　
49B, 275, 282, 2003

An analytical model for seismic isolation devices with hysteretic damping
KIKUCHI Masaru, KITAMURA Yoshihisa, INOUE Keiichi, UEDA Masaiki, J. Struct. Constr. Eng., AIJ, 68, 565, 63, 71, 2003
For the purpose of accurately predicting the seismic response of an isolated building, an analytical model for seismic isolation devices with hysteretic damping is proposed. The proposed model is capable of well-predicting the force-displacement relationships of various different types of devices, high-damping rubber bearings, lead-rubber bearings, and two types of steel dampers. Seismic response analyses are conducted to study the effectiveness of both existing models and the proposed model. The responses given by the existing models are mostly conservative. This fact indicates that the proposed model can be used to evaluate the performance of isolation devices accurately and effectively., Architectural Institute of Japan, Japanese

21431 Vibration test of the Pre-Stressed Pedestal Unit Deck for the Semiconductor Equipment
FUKUKITA Akira, KIKUCHI Masaru, SHIOYA Kiyoto, SARUTA Masaaki, KOBAYASHI Kazuhiko, TOGARI Yoshitaka, UCHIMOTO Hideo, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2002, 861, 862, 02 Aug. 2002
Architectural Institute of Japan, Japanese

Material Nonlinear Analysis of Reinforced Concrete Slab Considering The Bond Slip Between Concrete And Reinforcement.
MIZUNO Masae, 日本建築学会北海道支部研究報告集, 75, 397, 400, 29 Jun. 2002
Architectural Institute of Japan, Japanese

21258 An Analytical Hysteresis Model for U-shaped Steel Damper
KIKUCHI Masaru, YOSHIKAWA Hideaki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 515, 516, 2002
Architectural Institute of Japan, Japanese

Seismic Isolation of a Building with Large Eccentricity　　　　　　　　　　　　　　　
SEWC2002 Structural Engineers World Congress (CD-ROM), Tc-1-c1, 2002

An Analytical Hysteresis Model for Steel Damper
KIKICHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 673, 674, 2000
Architectural Institute of Japan, Japanese

Seismic behavior of a reinforced concrete building due to large vertical ground motion in near source regions
KIKUCHI M., Proceedings of 12th. World Conference on Earthquake Engineering, Paper, 2000, 1876, 2000

Study on the Hysteresis Properties of Lead-Rubber Bearings. : Part 2 Dynamic response analyses of isolated buildings.
KITAMURA Yoshihisa, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1999, 585, 586, 30 Jul. 1999
Architectural Institute of Japan, Japanese

Effectiveness of an isolation system on soft ground.
FUKUTAKE Kiyoshi, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2, 649, 650, 1999
Architectural Institute of Japan, Japanese

Study on the Hysteresis Properties of Lead-Rubber Bearings. : Part 1 Development of a new hysteresis model.
KIKICHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 583, 584, 1999
Architectural Institute of Japan, Japanese

MECHANICAL CHARACTERISTICS OF ELASTOMERIC SEISMIC ISOLATION BEARINGS UNDER TENSION
KIKUCHI Masaru, KITAMURA Yoshihisa, HAYASHI Shoji, KAWASHIMA Yoichi, SAKAGUCHI Toru, YAMADA Chikafumi, Journal of Structural and Construction Engineering (Transactions of AIJ), 64, 524, 57, 64, 1999
This paper describes the vertical behavior of elastomeric isolation bearings. A study consists of three phases. In the first phase, dynamic loading tests are conducted. Two types of high-damping rubber bearings which differ in thickness of flange-plates are used. Second, finite element analyses are performed to simulate the test results. Both the tests and the analysis results show that the flange-plates has significant effect on tension modulus. Third, a hysteresis model is proposed. Good agreement between the experimental and the analysis results shows that the model can be an effective numerical tool to predict the seismic response of isolated buildings., Architectural Institute of Japan, Japanese

Mechanical characteristics of elastomeric seismic isolation bearings under tension
KIKUCHI Masaru, KITAMURA Yoshihisa, HAYASHI Shoji, KAWASHIMA Yoichi, SAKAGUCHI Toru, YAMADA Chikafumi, J. Struct. Constr. Eng., AIJ, 64, 524, 57, 64, 1999
This paper describes the vertical behavior of elastomeric isolation bearings. A study consists of three phases. In the first phase, dynamic loading tests are conducted. Two types of high-damping rubber bearings which differ in thickness of flange-plates are used. Second, finite element analyses are performed to simulate the test results. Both the tests and the analysis results show that the flange-plates has significant effect on tension modulus. Third, a hysteresis model is proposed. Good agreement between the experimental and the analysis results shows that the model can be an effective numerical tool to predict the seismic response of isolated buildings., Architectural Institute of Japan, Japanese

Effectiveness of isolation system on liquefiable ground
Fukutake K, Tamaoki K, Kikuchi M, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1998, 611, 612, 30 Jul. 1998
Architectural Institute of Japan, Japanese

Study of Mechanical Characteristics of Elastomeric Seismic Isolation Bearings under Tension : Part 3 Finite Element Analyses
KAWASHIMA Yoichi, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1998, 553, 554, 30 Jul. 1998
Architectural Institute of Japan, Japanese

An Analytical Hysteresis Model for Vertical Behavior of Elastomeric Seismic Isolation Bearings
KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1998, 561, 562, 30 Jul. 1998
Architectural Institute of Japan, Japanese

Study of Mechanical Characteristics of Elastomeric Seismic Isolation Bearings under Tension : Part 1 Outline, Shear Tests under Constant Tension/Compression
SAKAGUCHI Toru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1998, 549, 550, 30 Jul. 1998
Architectural Institute of Japan, Japanese

Response Analyses of Base-isolated Slender Building for Excessively Large Input Motion
TAMURA Kazuo, KIKUCHI Masaru, KITAMURA Yoshihisa, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1998, 587, 588, 30 Jul. 1998
Architectural Institute of Japan, Japanese

Study of Mechanical Characteristics of Elastomeric Seismic Isolation Bearings under Tension : Part 2 Tension/Compression Tests
HAYASHI Shoji, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1998, 551, 552, 30 Jul. 1998
Architectural Institute of Japan, Japanese

Quantitative study on numbers of pulses observed in the wave-forms of earthquake records near the faults
DAN Kazuo, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1998, 161, 162, 30 Jul. 1998
Architectural Institute of Japan, Japanese

積層ゴムに引張力が生じる免震建物の地震応答解析　　　　　　　　　　　　　　　
第10回日本地震工学シンポジウム論文集, 235, 240, 1998

Seismic response analysis of isolated buildings generating tension force in isolation bearings　　　　　　　　　　　　　　　
235, 240, 1998

An Analytical Hysteresis Model fo Lead-Rubber Bearings
KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1997, 515, 516, 30 Jul. 1997
Architectural Institute of Japan, Japanese

An analytical hysteresis model for elastomeric seismic isolation bearings
M Kikuchi, ID Aiken, EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 26, 2, 215, 231, Feb. 1997
For the purpose of accurately predicting the seismic response of base-isolated structures, an analytical hysteresis model for elastomeric seismic isolation bearings is proposed. An extensive series of experimental tests of four types of seismic isolation bearings--two types of high-damping rubber bearings, one type of lead-rubber bearing and one type of silicon rubber bearing--was carried out with the objective of fully identifying their mechanical characteristics. The proposed model is capable of well-predicting the mechanical properties of each type of elastomeric bearing into the large strain range. Earthquake simulator tests were also conducted after the loading tests of the individual bearings. In order to show the validity of the proposed model, non-linear dynamic analyses were conducted to simulate the earthquake simulator test results. Good agreement between the experimental and analytical results shows that the model can be an effective numerical tool to predict not only the peak response value but also the force-displacement relationship of the isolators and floor response spectra for isolated structures., JOHN WILEY & SONS LTD, English

Shaking Table Test of the Base Isolated Structure with Rubber Bearings suffering Tension Force
SARUTA Masaaki, TAMURA Kazuo, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 2, 669, 670, 1997
Architectural Institute of Japan, Japanese

DYNAMIC RESPONSE ANALYSIS OF REINFORCED CONCRETE BUILDINGS DAMAGED IN THE 1993 KUSHIRO-OKI AND THE 1994 HOKKAIDO-TOHO-OKI EARTHQUAKES
KIKUCHI Masaru, DAN Kazuo, JOH Osamu, GOTO Yasuaki, TANAKA Hideo, YASHIRO Kazuhiko, Journal of Structural and Construction Engineering (Transactions of AIJ), 62, 495, 53, 62, 1997
Four buildings at the Kushiro Technical High School, damaged in the 1993 Kushiro-Oki and the 1994 Hokkaido-Toho-Oki earthquakes, were modeled as an assembly of nonlinear elements to verify our present techniques for earthquake-resistant design of structures. The input motions were independently evaluated based on the strong motions recorded on the ground at the Kushiro District Meteorological Observatory, 2km west of the school, and the soil-structure interaction was taken into account. The results of the dynamic response analysis showed a good agreement with the detail of different degree of the damage to the four buildings., Architectural Institute of Japan, Japanese

STUDY ON LARGE-ACCELERATION MOTIONS RECORDED DURING THE LARGEST AFTERSHOCK (M6.5) OF THE 1993 HOKKAIDO-NANSEI-OKI EARTHQUAKE
DAN Kazuo, KIKUCHI Masaru, FUKUKITA Akira, NISHIMURA Isao, Journal of Structural and Construction Engineering (Transactions of AIJ), 62, 495, 45, 52, 1997
A very large acceleration of 1.6 g was observed on the first floor of the Meiwa Elementary School, Hokkaido, during the largest aftershock of the 1993 Hokkaido-Nansei-Oki earthquake. In order to investigate the cause of this very large acceleration, this paper described the building three-dimensionally as an assembly of nonlinear elements because its plan was not a simple rectangle, and then the base-rock motions were estimated at a depth of 8.6 m after evaluating the soil-structure interaction. The resultant base-rock motions made it clear that the large acceleration of 1.6 g was ascribed mainly to the amplification factor of up to 30 at about 4 Hz from the base rock to the first floor of the building., Architectural Institute of Japan, Japanese

Dynamic response analysis of reinforced concrete buildings damaged in the 1993 Kushiro-oki and the 1994 Hokkaido-toho-oki earthquakes
KIKUCHI Masaru, DAN Kazuo, JOH Osamu, GOTO Yasuaki, TANAKA Hideo, YASHIRO Kazuhiko, J. Struct. Constr. Eng., AIJ, 62, 495, 53, 62, 1997
Four buildings at the Kushiro Technical High School, damaged in the 1993 Kushiro-Oki and the 1994 Hokkaido-Toho-Oki earthquakes, were modeled as an assembly of nonlinear elements to verify our present techniques for earthquake-resistant design of structures. The input motions were independently evaluated based on the strong motions recorded on the ground at the Kushiro District Meteorological Observatory, 2km west of the school, and the soil-structure interaction was taken into account. The results of the dynamic response analysis showed a good agreement with the detail of different degree of the damage to the four buildings., Architectural Institute of Japan, Japanese

Study on large-acceleration motions recorded during the largest aftershock (M6.5) of the 1993 Hokkaido-nansei-oki earthquake
DAN Kazuo, KIKUCHI Masaru, FUKUKITA Akira, NISHIMURA Isao, J. Strcut. Constr. Eng., AIJ, 62, 495, 45, 52, 1997
A very large acceleration of 1.6 g was observed on the first floor of the Meiwa Elementary School, Hokkaido, during the largest aftershock of the 1993 Hokkaido-Nansei-Oki earthquake. In order to investigate the cause of this very large acceleration, this paper described the building three-dimensionally as an assembly of nonlinear elements because its plan was not a simple rectangle, and then the base-rock motions were estimated at a depth of 8.6 m after evaluating the soil-structure interaction. The resultant base-rock motions made it clear that the large acceleration of 1.6 g was ascribed mainly to the amplification factor of up to 30 at about 4 Hz from the base rock to the first floor of the building., Architectural Institute of Japan, Japanese

Study on large-acceleration motions recorded during thelargest aftershock (M6. 5) of the 1993 Hokkaido-Nansei-Oki earthquake : Part 1 : Dynamic response analysis of the building of the Meiwa Elementary School by fixed-base model
KIKUCHI Masaru, DAN Kazuo, FUKUKITA Akira, TANAKA Hideo, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1996, 215, 216, 30 Jul. 1996
Architectural Institute of Japan, Japanese

Study on large-acceleration motions recorded during thelargest aftershock (M6. 5) of the 1993 Hokkaido-Nansei-Oki earthquake : Part 2 : Estimation of base-rock motions at the Meiwa Elementary School
DAN Kazuo, KIKUCHI Masaru, FUKUKITA Akira, YASHIRO Kazuhiko, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1996, 217, 218, 30 Jul. 1996
Architectural Institute of Japan, Japanese

049 Dynamic response analysis of reinforced concrete buildings damaged in the 1993 Kushiro-Oki earthquake and the 1994 Hokkaido Toho-Oki earthquake : Part 2: Analytical results
KIKUCHI Masaru, 日本建築学会北海道支部研究報告集, 69, 193, 196, 23 Mar. 1996
Architectural Institute of Japan, Japanese

048 Dynamic response analysis of reinforced concrete buildings damaged in the 1993 Kushiro-Oki earthquake and the 1994 Hokkaido Toho-Oki earthquake : Part 1: Evaluation of input earthquake motions
DAN Kazuo, 日本建築学会北海道支部研究報告集, 69, 189, 192, 23 Mar. 1996
Architectural Institute of Japan, Japanese

Dynamic Response Analyses of Reinforced Concrete Buildings damaged in the 1993 Kushiro-oki Earthquake of M7.8 in Japan　　　　　　　　　　　　　　　
Proceedings of the 11th World Conference on Earthquake Engineering (CD-ROM), 1164, 1996

Experimental Study on Base Isolation System of Structure to Isolate Earthquake and Vibration : Static Loading Tests of a Base Isolation System
HAYASHI Shoji, YOSHIZAWA Toshikazu, WATANABE Hiroyuki, FUKUDA Ken, KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1995, 615, 616, 20 Jul. 1995
Architectural Institute of Japan, Japanese

Dynamic earthquake response analysis of reinforced concrete buildings damaged due to the 1993 Kushiro-Oki earthquake of Japan. : Part 1 : Evaluation of input earthquake motion.
DAN Kazuo, KIKUCHI Masaru, TANAKA Hideo, YASHIRO Kazuhiko, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1995, 457, 458, 20 Jul. 1995
Architectural Institute of Japan, Japanese

Dynamic earthquake response analysis of reinforced concrete buildings damaged due to the 1993 Kushiro-Oki earthquake of Japan. : Part 2 : Modeling of the buildings and analysis results.
KIKUCHI Masaru, DAN Kazuo, TANAKA Hideo, YASHIRO Kazuhiko, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants, 1995, 459, 460, 20 Jul. 1995
Architectural Institute of Japan, Japanese

免震構造物の地震時損傷度評価法に関する研究
菊地優, IRI研究報告, 95, 3, 1995

免震構造物の安全性評価に関する一考察
日本建築学会構造系論文集, 470, 65, 73, 1995

免震・防振システムの振動特性に関する研究　　　　　　　　　　　　　　　
構造工学論文集, 41B, 69, 78, 1995

Safety evaluation of base-isolated structures
470, 65, 73, 1995

Dynamic performance of a base-isolation system for seismic protection and vibration isolation　　　　　　　　　　　　　　　
41B, 69, 78, 1995

Experimental Study on Base Isolation System of Structure to Isolate Earthquake and Vibration : Vibration Simulator Tests and Analyses
HAYASHI Shoji, YOSHIZAWA Toshikazu, KIKUCHI Masaru, FUKUDA Ken, WATANABE Hiroyuki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1994, 767, 768, 25 Jul. 1994
Architectural Institute of Japan, Japanese

EARTHQUAKE SIMULATOR TEST OF A BASE-ISOLATED REINFORCED CONCRETE BUILDING
KIKUCHI Masaru, SARUTA Masaaki, TAMURA Kazuo, KELLY James M., AIKEN lan D., CLARK Peter W., Journal of Structural and Construction Engineering (Transactions of AIJ), 59, 462, 69, 78, 1994
This paper describes earthquake simulator tests of a 1/2.5-scale model of an existing base-isolated, three-story reinforced-concrete building. Two types of high-damping rubber bearings and one type of lead-rubber bearing were used in these tests. Moderate and extreme input motions were applied to the model to study the ultimate behavior of the isolated structure. Dynamic analyses were conducted to simulate the response to both moderate and extreme input tests, using a previously-developed analytical model. Good agreement between the experimental and analytical results was obtained, and the analytical model was confirmed to be suitable for representing the mechanical properties of bearings., Architectural Institute of Japan, English

建物免震用積層ゴムの復元力特性に関する研究　　　　　　　　　　　　　　　
構造工学論文集, 40B, 177, 188, 1994

免震構造物のエネルギー応答に関する実験的研究　　　　　　　　　　　　　　　
第9回日本地震工学シンポジウム論文集, 1813, 1818, 1994

1976年中国唐山地震（M7.8）によって被害を受けた煙突の挙動シミュレーション　　　　　　　　　　　　　　　
第9回日本地震工学シンポジウム論文集, 679, 684, 1994

免震・防振システムの振動特性に関する実験的研究　　　　　　　　　　　　　　　
第9回日本地震工学シンポジウム論文集, 1807, 1812, 1994

Earthquake simulator test of a base-isolated reinforced concrete building　　　　　　　　　　　　　　　
462, 69, 78, 1994

Mechanical characteristics of rtubber bearings for seismic isolation　　　　　　　　　　　　　　　
40B, 177, 188, 1994

Experimental study on energy response of base-isolated structure　　　　　　　　　　　　　　　
1813, 1818, 1994

Behavior simulation of chimneys damaged during the 1976 Tangshan, China, earthquake (Ms7.8)　　　　　　　　　　　　　　　
679, 684, 1994

Experimental study on base isolation system of structure to isolate earthquake and vibration　　　　　　　　　　　　　　　
1807, 1812, 1994

Earthquake Simulator Test of a Base-Isolated Reinforced Concrete Building : Part 2 Bearing Tests
Saruta Masaaki, Kelly James M., Aiken Ian D., Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1993, 555, 556, 25 Jul. 1993
Architectural Institute of Japan, Japanese

Earthquake Simulator Test of a Base Isolated Reinforced Concrete Building : Part 1 General Plan
Itoh Tetsuji, Kelly James M., Aiken Ian D., Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1993, 553, 554, 25 Jul. 1993
Architectural Institute of Japan, Japanese

Earthquake Simulator Test of a Base-Isolated Reinforced Concrete Building : Part 3 Shaking Table Test
Kikuchi Masaru, Kelly James M., Aiken Ian D., Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1993, 557, 558, 25 Jul. 1993
Architectural Institute of Japan, Japanese

Structural damage potential of strong motion recorded at the Kushiro District Meteorological Observatory during the 1993 Kushiro-Oki earthquake(M7.8) : Part1 : Dynamic response analysis on the building of the Meteorological Observatory
Dan Kazuo, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1993, 21, 22, 25 Jul. 1993
Architectural Institute of Japan, Japanese

Structural damage potential of strong motion recorded at the Kushiro District Meteorological Observatory during the 1993 Kushiro-Oki earthquake(M7.8) : Part2 : Dynamic response analysis rigid-frame structure of different types
Watanabe Koichi, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1993, 23, 24, 25 Jul. 1993
Architectural Institute of Japan, Japanese

STRUCTURAL DAMAGE POTENTIAL OF STRONG-MOTION RECORDS AT THE KUSHIRO DISTRICT METEOROLOGICAL OBSERVATORY FROM THE 1993 KUSHIRO-OKIEARTHQUAKE (M7.8)
DAN Kazuo, WATANABE Koichi, KIKUCHI Masaru, EBIHARA Manabu, Journal of structural and construction engineering, 454, 54, 60, 1993
The strong-motion records at the Kushiro District Meteorological Observatory from the 1993 Kushiro-Oki earthquake were applied to rigid-frame structures of different types. The total plastic energy dissipation of short period structures under the records was larger than that under the design input motions, while the energy dissipation of long period structures was comparable or smaller. The response level-of a low building with a short natural period showed that the damage should be moderate or severe. But, the actual damage to such a kind of buildings was rather slight around the observatory. The earthquake resistant capacity of non-structural components should be appropriately evaluated in design process., Architectural Institute of Japan, Japanese

Design- and Ultimate-Level Earthquake Tests of a 1/2.5-scale Base-Isolation Reinforced-Concrete Building　　　　　　　　　　　　　　　
Proceedings of Seminar on Seismic Isolation, Passive Energy Dissipation, and Active Control, ATC 17-1, 1, 281, 292, 1993

Structural damage potential of strong-motion records at the Kushiro district meteological observatory from the 1993 Kushiro-oki earthquake　　　　　　　　　　　　　　　
454, 54, 60, 1993

鉄筋コンリ-ト造免震構造物の振動台実験
菊地 優, 清水建設研究報告, 56, p31, 38, Oct. 1992
清水建設技術研究所, Japanese

A Study on Bi-Axial Hysteresis Model of Isolators
KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1992, 771, 772, 01 Aug. 1992
Architectural Institute of Japan, Japanese

EXPERIMENTAL STUDIES OF THE MECHANICAL CHARACTERISTICS OF 3 TYPES OF SEISMIC ISOLATION BEARINGS
ID AIKEN, JM KELLY, PW CLARK, K TAMURA, M KIKUCHI, T ITOH, PROCEEDINGS OF THE TENTH WORLD CONFERENCE ON EARTHQUAKE ENGINEERING, VOLS 1-10, 2281, 2286, 1992
A A BALKEMA, English

Loading Test of Silicon Rubber Bearing
KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1991, 607, 608, 01 Aug. 1991
Architectural Institute of Japan, Japanese

Comparison between the Horizontal and Vertical Components of the Near-field Strong-motion Records
ISHII Toru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1991, 393, 394, 01 Aug. 1991
Architectural Institute of Japan, Japanese

Elast-plastic Response Characteristics of Base-isolated RC Frame
TAMURA Kazuo, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 651, 652, 1990
Architectural Institute of Japan, Japanese

鉛ブラグ入り積層ゴムの復元力モデルに関する研究
菊地優, 日本建築学会大会学術講演梗概集 (関東), B構造I, 1990.10, 659, 660, 1990

Base Isolated Building Having Irregular Plan
SARUTA Masaki, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1989, 413, 414, 01 Sep. 1989
Architectural Institute of Japan, Japanese

Elasto-Plastic Analysis of Reinforced Concrete Structure to Dynamic Load : Part II, 3-Dimensional Response Analysis
KIKUCHI Masaru, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1987, 27, 28, 25 Aug. 1987
Architectural Institute of Japan, Japanese

Elasto-Plastic Analysis of Reinforced Concrete Structure to Dynamic Load : Part I, Axi-Symmetric Response Analysis
KOJIMA Isao, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, 1987, 25, 26, 25 Aug. 1987
Architectural Institute of Japan, Japanese

51 梁の塑性ヒンジ発生域制御によるRC骨組の復元力特性改善について : I.実験概要、亀裂状況、耐力、荷重-変形関係(RC部材・骨組の実験,建築構造)
柳沼 裕之, 久家 里三, 菊地 優, 草苅 敏夫, 後藤 康明, 城 攻, 柴田 拓二, 日本建築学会北海道支部研究報告集. 構造系, 59, 201, 204, 26 Mar. 1986
一般社団法人日本建築学会, Japanese

52 梁の塑性ヒンジ発生域制御によるRC骨組の復元力特性改善について : II.復元力特性、各部変形、鉄筋歪度、付着応力度(RC部材・骨組の実験,建築構造)
柳沼 裕之, 久家 里三, 菊地 優, 草苅 敏夫, 後藤 康明, 城 攻, 柴田 拓二, 日本建築学会北海道支部研究報告集. 構造系, 59, 205, 208, 26 Mar. 1986
一般社団法人日本建築学会, Japanese

Behavior of RC Beam-Colum Joints Repaored with Epoxy Resin : Part III
JOH Osamu, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. Structures II, 1985, 105, 106, 10 Sep. 1985
Architectural Institute of Japan, Japanese

Behavior of RC Beam-Colum Joints Repaored with Epoxy Resin : Part I
KUSAKARA Toshio, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. Structures II, 1985, 101, 102, 10 Sep. 1985
Architectural Institute of Japan, Japanese

Behavior of RC Beam-Colum Joints Repaored with Epoxy Resin : Part II
IWATA Tokuo, Summaries of technical papers of Annual Meeting Architectural Institute of Japan. Structures II, 1985, 103, 104, 10 Sep. 1985
Architectural Institute of Japan, Japanese

中空PHC杭のコンクリート充填の効果について
坂本 瑞知, 後藤 康明, 草苅 敏夫, 岩田 徳夫, 菊地 優, 柴田 拓二, 建築雑誌. 建築年報, 1985, 76, 76, 20 Aug. 1985
一般社団法人日本建築学会, Japanese

エポキシ樹脂で補修したRC柱梁接合部の耐力変形性状 : その2. 復元力特性
内山 学, 入江 理, 山田 卓, 岩田 徳夫, 菊地 優, 草苅 敏夫, 後藤 康明, 柴田 拓二, 建築雑誌. 建築年報, 1985, 76, 76, 20 Aug. 1985
一般社団法人日本建築学会, Japanese

エポキシ樹脂で補修したRC柱梁接合部の耐力変形性状 : その1. 実験概要・破壊性状および耐力
入江 理, 内山 学, 山田 卓, 岩田 徳夫, 菊地 優, 草苅 敏夫, 後藤 康明, 柴田 拓二, 建築雑誌. 建築年報, 1985, 76, 76, 20 Aug. 1985
一般社団法人日本建築学会, Japanese

55 エポキシ樹脂で補修した鉄筋コンクリート柱梁接合部の耐力変形性状 : その2. 復元力特性(RC杭・RC接合部・立体骨組の実験,建築構造)
内山 学, 入江 理, 山田 卓, 岩田 徳夫, 菊地 優, 草苅 敏夫, 後藤 康明, 柴田 拓二, 日本建築学会北海道支部研究報告集. 構造系, 58, 221, 224, Mar. 1985
前報では,エポキシ樹脂及び樹脂モルタルで補修を行なった十字型RC柱梁接合部に対して,その補修効果を把握する目的で行なった再加力実験に関し,その実験概要と破壊性状及び耐力について報告した。本報では同実験で得られた復元力特性について報告する。, 一般社団法人日本建築学会, Japanese

51 中空PHC杭のコンクリート充填の効果について(RC杭・RC接合部・立体骨組の実験,建築構造)
坂本 瑞知, 後藤 康明, 草刈 敏夫, 岩田 徳夫, 菊地 優, 柴田 拓二, 日本建築学会北海道支部研究報告集. 構造系, 58, 205, 208, Mar. 1985
一般社団法人日本建築学会, Japanese

54 エポキシ樹脂で補修した鉄筋コンクリート柱梁接合部の耐力変形性状 : その1. 実験概要・破壊性状および耐力(RC杭・RC接合部・立体骨組の実験,建築構造)
入江 理, 内山 学, 山田 卓, 岩田 徳夫, 菊地 優, 草刈 敏夫, 後藤 康明, 柴田 拓二, 日本建築学会北海道支部研究報告集. 構造系, 58, 217, 220, Mar. 1985
一般社団法人日本建築学会, Japanese

遠心力PHC杭のコンクリート充填効果について
菊地優, 日本建築学会大会学術講演梗概集, 981, 982, 1985

大振幅地震動に対する免震構造の設計　　　　　　　　　　　　　　　
(5) 日本建築学会, 2020, [Contributor]

Seismic structural health monitoring : from theory to successful applications
Limongelli, Maria Pina, Çelebi, Mehmet
Springer, 2019, 9783030139759, xii, 447 p., English, [Contributor]

免震・制震ハンドブック　　　　　　　　　　　　　　　
日本免震構造協会
Jul. 2014, [Joint editor]

免震構造設計指針　　　　　　　　　　　　　　　
日本建築学会
Oct. 2013, [Contributor]

長周期地震動と建築物の耐震性　　　　　　　　　　　　　　　
菊地 優
日本建築学会, 2007, [Contributor]

多様な地震動に備える免震構造　　　　　　　　　　　　　　　
菊地 優
第13回振動技術展, 03 Feb. 2022, Japanese
[Invited]

繰り返し載荷を受ける免震部材の熱力学連成挙動　　　　　　　　　　　　　　　
菊地優
日本建築学会近畿支部シンポジウム「巨大地震に備えて免震・制振技術に期待すること」, 19 Nov. 2019, Japanese, Invited oral presentation
[Invited]

免震建築の現状と将来展望　　　　　　　　　　　　　　　
菊地 優
自動車技術会関東支部, 22 Jan. 2019, Japanese, Invited oral presentation
[Invited], [Domestic Conference]

巨大地震に備える免震構造　　　　　　　　　　　　　　　
菊地 優
日本振動技術協会講演会, 22 Jan. 2018, Japanese, Keynote oral presentation
[Invited], [Domestic Conference]

免震建築の現状の課題と将来展望　　　　　　　　　　　　　　　
菊地 優
第17回免震フォーラム, 18 Dec. 2017, Japanese, Keynote oral presentation
[Invited], [Domestic Conference]

免震構造の実態性能と社会の評価　　　　　　　　　　　　　　　
菊地 優
第4回損害保険鑑定人フォーラム, 10 Nov. 2017, Japanese, Keynote oral presentation
[Invited], [Domestic Conference]

An Advanced Hysteresis Model of High-Damping Rubber Bearings for Seismic Isolation　　　　　　　　　　　　　　　
KIKUCHI Masaru
16th Scientific Conferernce of the memory of Professor Danilovsky, 18 Oct. 2017, English, Invited oral presentation
[Invited], [International presentation]

Why do we need seismic isolation?　　　　　　　　　　　　　　　
KIKUCHI Masaru
16th Scientific Conferernce of the memory of Professor Danilovsky, 17 Oct. 2017, English, Keynote oral presentation
[Invited], [International presentation]

構造工学が担う建築歴史遺産の継承　　　　　　　　　　　　　　　
菊地 優
第63回構造工学シンポジウム, 22 Apr. 2017, Japanese, Nominated symposium
[Invited], [Domestic Conference]

Vibration Control Technologies for Building Structures in Japan　　　　　　　　　　　　　　　
KIKUCHI Masaru
New Idea of New Century, Pacific National University, Khabarovsk, Russia, 22 Feb. 2017, English, Invited oral presentation
[Invited]

大振幅地震動に備える免震構造　　　　　　　　　　　　　　　
菊地 優
JSCA北海道支部功労賞受賞記念講演会, 15 Nov. 2016, Japanese, Keynote oral presentation
[Invited], [Domestic Conference]

Seismic Isolation Devices, Principle and application of SI devices, introduction of examples　　　　　　　　　　　　　　　
KIKUCHI Masaru
Three Days Semiar on Seismic Isolation in Turkey, Ankara, Turkey, 22 Mar. 2016, English, Invited oral presentation
[Invited]

免震構造物の多次元地震時挙動　　　　　　　　　　　　　　　
菊地 優
耐震工学研究会, 17 Jul. 2015, Japanese, Public discourse
[Invited]

免震構造の現状と今後　　　　　　　　　　　　　　　
菊地 優
鳥取発 免震・スマートハウス研究会, 11 Mar. 2015, Japanese, Public discourse
[Invited]

Seismic Isolation Technology in Japan　　　　　　　　　　　　　　　
KIKUCHI Masaru
Seminar on Construction Technology in Hokkaido, Sakhalin region Government, Yuzino-Sakhalinsk, Russia, 02 Oct. 2014, Russian, Invited oral presentation
[Invited]

Seismic Isolation in the 2011 Tohoku Earthquake　　　　　　　　　　　　　　　
KIKUCHI Masaru
RFS Seminar, PEER Center, University of California, Berkeley, USA, 28 Nov. 2012, English, Invited oral presentation
[Invited]

東日本大震災から学ぶ免震構造のあり方　　　　　　　　　　　　　　　
菊地 優
第15回免震フォーラム, 31 Aug. 2012, Japanese, Keynote oral presentation
[Invited], [Domestic Conference]

建築物の免震について－免震に関する最新の話題－　　　　　　　　　　　　　　　
菊地 優
札幌建築クラブ講演会, 16 Jun. 2010, Japanese, Keynote oral presentation
[Invited], [Domestic Conference]

未来に残したい歴史的建築物～地震から守るために～　　　　　　　　　　　　　　　
菊地 優
日本建築家協会北海道支部, 04 Dec. 2009, Japanese
[Invited]

免震構造の最新技術開発トレンド　　　　　　　　　　　　　　　
菊地 優
日本免震構造協会, Nov. 2008, Japanese
[Invited]

プレート境界の巨大地震－2003年十勝沖地震から何を学ぶか　　　　　　　　　　　　　　　
菊地 優
自然災害研究防災フォーラム, 29 Mar. 2006, Japanese
[Invited]

振動制御による耐震改修と地震防災　　　　　　　　　　　　　　　
菊地 優
JSCA北海道支部, 29 Mar. 2006, Japanese

コンピューティング演習　　　　　　　　　　　　　　　
北海道大学

空間構造デザイン特別演習　　　　　　　　　　　　　　　
北海道大学

空間構造デザイン特論　　　　　　　　　　　　　　　
北海道大学

構造解析Ⅱ　　　　　　　　　　　　　　　
北海道大学

物理学Ⅰ　　　　　　　　　　　　　　　
北海道大学

応用図形科学　　　　　　　　　　　　　　　
北海道大学

基礎図形科学　　　　　　　　　　　　　　　
北海道大学

Jan. 2020
Earthquake Engineering Research Institute　　　　　　　　　　　　　　　

多様な地震動に備える高機能免震構造の開発
科学研究費補助金（基盤研究(A)）
Apr. 2019 - Mar. 2022
菊地 優
文部科学省, Principal investigator, Competitive research funding

Comprehensive study on the 2018 Hokkaido Eastern Iburi Earthquake and its disaster
Grants-in-Aid for Scientific Research
04 Oct. 2018 - 31 Mar. 2019
Takahashi Hiroaki
Comprehensive investigation on the 2018 Hokkaido Eastern Iburi earthquake and its disaster was conducted. Mainshock rupture initiated at deepest part and major slip was occurred in 20-30km deep. Multiple simultaneous landslides in Atsuma town was induced by combination of strong ground shaking and weak sliding layer between pyroclastic fall deposit layers. Halloysite cray minerals was discovered in all sliding layers. Simulation suggested landslides might attack residential houses within 6 seconds. Observed peak ground motions in nearby area were larger than common distance attenuation model. Severe wooden house damage in Mukawa town was due to amplified seismic waves due to site effects. Sounding and boring investigation revealed filled low-density volcanic ash and higher groundwater level in liquefaction area. Electricity blackout caused severe damage in social and economic activities of Hokkaido. These scientific outcomes were explained to residents at public briefing session.
Japan Society for the Promotion of Science, Grant-in-Aid for Special Purposes, Hokkaido University, 18K19952

高摩擦すべり支承の熱・力学連成挙動解析システムの開発
研究助成
Oct. 2017 - Mar. 2019
菊地 優
大成学術財団, Principal investigator, Competitive research funding

巨大地震に対するRCパッシブ制振建物－地盤連成系の非線形最適制御設計法の開発　　　　　　　　　　　　　　　
科学研究費補助金（基盤研究（C））
Apr. 2016 - Mar. 2019
白井和貴
文部科学省, Competitive research funding

廃タイヤ活用による構造物高耐震化システムの開発　　　　　　　　　　　　　　　
科学研究費補助金（挑戦的萌芽研究）
Apr. 2016 - Mar. 2019
菊地 優
文部科学省, Principal investigator, Competitive research funding

過大地震入力に対する免震構造の極限性能向上技術の開発
科学研究費補助金（基盤研究(A)）
Apr. 2015 - Mar. 2018
菊地 優
文部科学省, Principal investigator, Competitive research funding

OpenSeesを用いた免震構造極限挙動解析システムの構築　　　　　　　　　　　　　　　
免震構造・制振構造に関わる研究助成
Apr. 2014 - Mar. 2015
菊地 優
日本免震構造協会, Principal investigator, Competitive research funding

風応答長期観測記録に基づく塔状構造物の動特性変動の定量化　　　　　　　　　　　　　　　
科学研究費補助金（挑戦的萌芽研究）
Apr. 2011 - Mar. 2014
菊地 優
文部科学省, Principal investigator, Competitive research funding

多次元入力地震動に対する免震建物の地震応答評価手法の開発
科学研究費補助金（基盤研究(B)）
Apr. 2011 - Mar. 2014
菊地 優
文部科学省, Principal investigator, Competitive research funding

免震部材の多軸連成力学モデルの開発　　　　　　　　　　　　　　　
免震構造・制振構造に関わる研究助成
Apr. 2011 - Mar. 2012
菊地 優
日本免震構造協会, Principal investigator, Competitive research funding

原子力施設用配管の耐震裕度評価法と耐震性向上技術に関する開発　　　　　　　　　　　　　　　
革新的実用原子力技術開発費補助事業
Apr. 2008 - Mar. 2011
中村 孝
経済産業省, Competitive research funding

免震建物の終局挙動評価技術の高度化と合理的設計法への展開
科学研究費補助金（基盤研究(B)）
Apr. 2008 - Mar. 2011
菊地 優
文部科学省, Principal investigator, Competitive research funding

シナリオ地震による都市直下型地震の強震動予測に基づく既存建築物の耐震性能の評価　　　　　　　　　　　　　　　
科学研究費補助金（基盤研究(C)）
Apr. 2006 - Mar. 2008
菊地 優
文部科学省, Principal investigator, Competitive research funding

北海道の地震環境に基づく歴史的建造物の戦略的保存再生法に関する研究　　　　　　　　　　　　　　　
科学研究費補助金（基盤研究(C)）
Apr. 2004 - Mar. 2006
菊地 優
文部科学省, Principal investigator, Competitive research funding