SEARCH

Search Details

Uchida Kenetsu

Faculty of Engineering　Civil Engineering　Natural Disasters and AdaptationProfessor

Researcher basic information

■ Degree
  • (BLANK), Hokkaido University
■ URL
researchmap URLホームページURL■ Various IDs
Researcher number
  • 90322833
J-Global ID■ Research Keywords and Fields
Research Keyword
  • Transportation Planning
  • Traffic Engineering
Research Field
  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention), Civil engineering plan and transportation engineering
■ Educational Organization

Career

■ Career
Career
  • Apr. 2018 - Present
    北海道大学大学院, 教授
  • Apr. 2013 - Mar. 2018
    北海道大学大学院 准教授
  • Jun. 2004 - Mar. 2013
    北海道大学大学院 助手（2007年から助教）
  • Aug. 2003 - May 2004
    University of Leeds, Institute of Transport Studies（文部科学省在外研究員）
Educational Background
  • Apr. 1997 - Mar. 2000, Hokkaido University, 工学研究科, 都市環境工学専攻 博士後期課程, Japan
  • Apr. 1995 - Mar. 1997, 北海道大学大学院, 工学研究科 システム情報工学専攻 修士課程
  • 1995, Kanagawa University, Faculty of Engineering, Department of Industrial Engineering and Management, Japan

Research activity information

■ Awards
  • Sep. 2025, Eastern Asian Society for Transportation Studies, The BEST PAPER AWARD for theoretical development
    Bottleneck Capacity Optimization Model Considering Network-level Dynamic Evacuation Behavior
    Kenshiro OSHIMA;Ryuichi TANI;Kenetsu UCHIDA
  • May 2025, Springer Nature, Editor of Distinction Awards 2025 (Author Service Award 2025)
    学会誌・学術雑誌による顕彰
  • Jun. 2012, 土木学会論文賞
    交通容量の確率的変動が道路ネットワークの移動時間に与える影響に関する研究
    内田 賢悦
  • Oct. 2005, 日本地域学会論文奨励賞
    札幌都心部における駐車場配置による歩行回遊誘発率に関する研究
    内田 賢悦
  • Apr. 2005, 土木学会北海道支部 論文奨励賞
    プロビット型マルチモーダル配分による凍結防止剤最適散布問題に関する研究
    内田賢悦
  • Nov. 2003, Eastern Asia Society for Transportation Studies, Yasoshima's Prize
    Visibility Assessment of Rear Lamps in Daytime Fog
■ Papers
■ Other Activities and Achievements
■ Syllabus
  • 交通計画特論, 2024年, 修士課程, 工学院
  • 交通計画特論, 2024年, 博士後期課程, 工学院
  • Academic Communication Ⅲ, 2024年, 学士課程, 工学部
  • 卒業論文, 2024年, 学士課程, 工学部
  • 社会資本政策学, 2024年, 学士課程, 工学部
  • 都市経済学, 2024年, 学士課程, 工学部
  • 応用数学演習Ⅱ, 2024年, 学士課程, 工学部
  • 応用数学Ⅱ, 2024年, 学士課程, 工学部
  • 土木計画学演習, 2024年, 学士課程, 工学部
  • パブリックデザイン論, 2024年, 学士課程, 工学部
■ Affiliated academic society
  • 日本都市計画学会
  • 交通工学研究会
  • 土木学会
■ Research Themes
  • 来る自動運転社会を見据えた戦略的ネットワークデザインに資する技術開発
    科学研究費助成事業 基盤研究(B)
    01 Apr. 2021 - 31 Mar. 2024
    内田 賢悦; 宗廣 一徳; 加藤 哲平; 杉浦 聡志; 四辻 裕文; 峪 龍一
    今年度は、自動運転社会での戦略的ネットワークデザインを念頭に置き、自動運転車両が道路ネットワークに与える影響を定量的に評価するための技術、すなわち、コネクティッドな自動運転車両の特性を踏まえた交通解析法の開発を行った。
    開発した解析法は、ヒトが運転する一般車両とコネクティッドな自動運転車両が混在する道路ネットワークを対象としており、そこではそれぞれの車両が異なる経路選択行動をとると考えている。ヒトが運転する車両は、精度の高い道路ネットワーク上の交通状況を得ることが困難であると考えられるため、その経路選択行動を確率的利用者均衡配分問題として表現している。一方で、コネクティッドな自動運転車両は、精度の高い道路ネットワーク上の交通状況を得ることが可能であると考えられるため、その経路選択行動を確定的利用者均衡配分問題として表現している。ここで、確率的利用者均衡配分問題は不完全情報下の経路選択を表現するのに対して、確定的利用者均衡配分問題は完全情報下の経路選択を表現している。
    また、ヒトが運転する車両とコネクティッドな自動運転車両は、異なる車頭時間を有して走行すると考えられ、さらに車種ごとの車頭時間にはばらつきがあることが想定される。そのため、車種別の車頭時間分布を設定することによって、確率的な交通容量を表現した。このことにより、リンク上の自動運転車両の比率によって、異なる分布形状をとる確率的なリンク交通容量を表現することができた。経路選択の異質性と確率的交通容量の影響を表現したマルチユーザクラス均衡配分問題として、交通解析法の定式化を行った。この解析法では、交通量だけではなく移動時間も確率変数として計算されるため、時間信頼性の視点から、自動運転車両が道路ネットワークに与える影響の定量的評価が可能となった。
    日本学術振興会, 基盤研究(B), 北海道大学, 21H01446
  • Estimation of stock effects from connected autonomous vehicles based on network reliability
    Grants-in-Aid for Scientific Research
    01 Apr. 2018 - 31 Mar. 2021
    Uchida Kenetsu
    In this study, a method for estimating the stock effects from connected autonomous vehicles is developed. The method focuses on the travel time reliability. The method addresses two effects of the connected autonomous vehicles, i.e., improvement of stochastic traffic capacity and enhanced travel time information in a road network. Such effects improve the travel time reliability. Numerical experiments are carried out for demonstrating the method developed in this study. It is shown that the method estimates correctly the stock effects from the connected autonomous vehicles from the viewpoint of the travel time reliability.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 18H01550
  • Development of a road maintenance planning method for wide area road network considering river and sediment disaster risk
    Grants-in-Aid for Scientific Research
    01 Apr. 2017 - 31 Mar. 2020
    Arimura Mikiharu
    Typhoon No. 10, which struck Tohoku/Hokkaido in 2016, caused flooding of bridges and large-scale landslides due to flooding of rivers in various places, causing catastrophic damage to the main trunk roads that support local communities. For such unusual weather, it is necessary to build a wide-area road network with a view to the future. Conventionally, river basin plans and ground maintenance plans and road maintenance plans have not been linked sufficiently from the viewpoint of disaster prevention and mitigation. In this study, we used traffic big data for large-scale meteorological disasters to grasp the impact of damage to a wide area road network over a long period of time. In addition, a road improvement planning method was developed to improve the resilience of the wide area road network in consideration of the potential road damage risk due to river and sediment disasters.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Muroran Institute of Technology, 17H03318
  • Comprehensive study on the 2018 Hokkaido Eastern Iburi Earthquake and its disaster
    Grants-in-Aid for Scientific Research Grant-in-Aid for Special Purposes
    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
  • Development of a road traffic measure evaluation model considering travel time reliability
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
    01 Apr. 2014 - 31 Mar. 2017
    UCHIDA KENETSU
    This study developed a benefit estimation model that considers travel time reliability. The model is based on a network model that is formulated as a utility maximization problem with constraints. Since this utility maximization problem has the same equilibrium conditions as a multi-class user equilibrium traffic assignment problem with elastic demand, both transport demand forecasting and benefit estimation can be carried out in the same framework. By assuming a certain form for the utility function, the road network model can estimate the prohibitive price, so the proposed method is convenient for estimating opportunity loss due to disruption of origin-destination connection in the event of a natural disaster. Furthermore, the values of travel time and travel time reliability are estimated endogenously in the proposed method; thus, changes in these values can be reflected in the benefit estimation. A numerical experiment demonstrates the method presented in this study.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, Principal investigator, Competitive research funding, 26420509
  • Development of river planning tools considering large-scale spatial and temporal non-linear characteristics in flood risks
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
    01 Apr. 2013 - 31 Mar. 2017
    Kimura Ichiro
    To enable a large-scale river planning considered connections of whole river basin, we developed novel numerical and mathematical tools, and checked their validity by applying them to flood events with different temporal and spatial scales. The tools are composed of flood physics model, flood economic model and flood evacuation model. The flood physics model is the most fundamental part for the river planning, and is divided into 4 components, the large-scale inundation model, inner-outer inundation connected model, flood induced local flow model and tsunami model. Those tools were tested through the applications to past flood events with different scales, and the results were compared with observations. Such calibration process showed that the river planning aided by the proposed new tools are quite useful and practical. Some components of the results were assembled as free-software on an open-source platform to enable everyone in the world can use our result without limitations.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 25289150
  • An estimation model of value of travel time and of travel time reliability in road networks
    Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
    01 Apr. 2012 - 31 Mar. 2014
    UCHIDA Kenetsu
    This study proposes two network models which simultaneously estimate the value of travel time and of travel time reliability based on the risk-averse driver's route choice behaviour. The first model is formulated as a utility maximization problem under monotonic and separable link travel times, whereas the second model is formulated as a utility maximization problem under non-monotonic and non-separable link travel times. It is shown that the first model, which addresses independent stochastic capacity, is formulated as an optimization problem with a unique solution. The second model, which addresses both stochastic Origin-Destination (O-D) flow and stochastic link capacity, is formulated as a nonlinear complementary problem. The network models proposed in this study are consistent with those of studies that address the value of travel time and of travel time reliability based on utility maximization behaviour.
    Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, Principal investigator, Competitive research funding, 24760404
  • Development of a transportation analysis method in cold regions
    Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
    2009 - 2011
    UCHIDA Kenetsu
    In this study, a model which addresses the passenger's travel behavior under uncertainties has been developed for the purpose of analyzing travel time reliability in winter transport network. The uncertainties addressed in the model are those of traffic capacity, travel demand and the passenger's perception of travel time. Railway transport network as well as road transport network has been addressed in the model.
    Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, Principal investigator, Competitive research funding, 21760393
  • 公共交通を考慮した積雪寒冷地の冬期路面管理システムの開発
    科学研究費助成事業 若手研究(B)
    2006 - 2007
    内田 賢悦
    北海道のような積雪寒冷地では,夏期と冬期の交通行動を観察すると,交通機関の選択率が変化することが既存調査から明らかとなっている.たとえば,軌道系交通機関の選択率は冬期に増加し,これとは逆に道路交通の選択率は減少する.これは,冬期には道路が雪に覆われ,滑りやすい状態になるだけではなく,堆雪により有効幅員が減少するため,こうした現象が影響して,道路交通のサービスレベルが大きく低下するためと考えられてきた.したがって,積雪寒冷地の冬期の交通行動を包括的に捉えるためには,除・排雪に代表される冬期路面管理を考える必要があり,さらには,道路交通以外の交通機関への影響に配慮しなければならない.本研究では,冬期路面管理レベルが交通行動に与える影響を包括的に表現する交通モデルの構築を行い,交通ネットワーク上の社会的費用が最小化される冬期路面管理レベルを検討している.本モデルでは,冬期路面管理費用と交通ネットワーク上を移動する人の時間費用の和を社会的費用と捉え,それを最小化する問題(NDP: Network Design Problem)として交通現象を定式化している.本研究で定式化したNDPでは,冬期路面管理レベルが変化すると人々の交通行動,たとえば,交通機関選択,経路選択等が変化し,これは確率的均衡条件によって表現される.したがって,一般的にNDPは,均衡制約付き最適化問題として定式化されているが,本研究では,確率的均衡条件に対する感度分析に基づくアルゴリズムも示している.数値実験を行った結果,冬期路面管理レベルによる人々の交通行動の変化が再現できることを確認し,さらには,最適な冬期路面管理レベル,すなわち,社会的費用を最小化する冬期路面管理レベルを求めることが可能であることを確認した.
    日本学術振興会, 若手研究(B), 北海道大学, Principal investigator, Competitive research funding, 18760382
  • A Study on LCC reduction technique for traffic infrastructure under the condition of antifreezing admixture usage
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
    2004 - 2006
    UEDA Tamon; KANIE Shunji; NAWA Toyoharu; UCHIDA Kenetsu; HASIMOTO Yuichi; SATO Yasuhiko
    The following conclusions can be drawn.
    (1)A model for evaluating life cycle cost of pavements considering winter road traffic situation was proposed. An algorithm for the model which was developed by applying the sensitivity analysis of the probit stochastic user equilibrium (PSUE) was also proposed. Drivers' route choice behavior induced by deterioration of surface condition of pavements, change in traffic capacities brought by repair works in summer, and change in traffic capacities brought by antifreezing admixture dispersion in winter was endogenously expressed in the model. As a result, a plan for repair works and dispersion of antifreezing admixture which minimizes the life cycle cost by taking above mentioned driviers' behavior into account was obtained by carrying out a numerical experiment.
    (2)The integrated database combining the data of varieties, such as the road surface condition, the drive condition, the weather information and so on was created. As a case study using this database, the research solved the relation between the road surface condition and the drive condition in winter, and showed that the useful information to the traffic administrator and the road user could be created. This result showed the validity of the anti-freezing agent in the case of many, and clarified further the conditions on which that effect fades.
    (3)A calculation example of 2 dimensional Moving Element Method (MEM) with a vehicle model was introduced and it is verified that an interactive behavior between a vehicle and plate can be successfully analyzed by this method. The developed MEM has following advantages against conventional time-domain FEM for continuous structure under the loading due to a moving vehicle, (a) MEM can fix the loading position in the model regardless of time elapsingwhereas FEM needs large model corresponding to the moving range of the vehicle, (b) Since limited area or length near the loading point is finitely modeled for MEM, the degrees of freedom required for the analysis become smaller than those for a conventional FEM.
    (4)Damage evaluation method for infrastructure based on fractal analysis was developed.
    (5)A bond model for FRP sheet which can consider the influence of Young's modulus of resign and sheet was developed.
    (6)Surface protective agent which can penetrate into 40 mm depth from concrete surface was developed.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 16206044
  • Development of Highway Maintenance System using Deterministic Model for Structure Degradation in Cold Region
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
    2002 - 2004
    KAGAYA Seiichi; OBATA Takashi; NAWA Toyoharu; SATO Yasuhiko; HASHIMOTO Yuichi; HAGIWARA Toru
    The influences from dispersion of antifireezing admixture, toward function of road transport and toward deterioration of road facilities, are analyzed in this study. This study aimes for the enhancement of systems of operation and maintenance for dealing with the influences. Firstly, an examination on the technologies of operation and maintenance for road network which support transport system is made. Then, a Web-based database system which can capture the real road traffic situation in winter, both temperaly and spatialy, is developed. Finally, an examination on the optimal amount of antifreezing admixture dispersion problem considering the changes in modal shares made by passengers is also carried out. An efficient usage of antifreezing admixture will be brought out by both technologies regarding the effective road maintenance, and regarding the control of passengers' travel behaviors determined by characteristics of transport network.
    A detailed mechanism of deterioration in concrete structure caused by antifreezing admixture is captured. An examination on the strengthening resistibility to penetration of sodium into cement, which is known as main material of concrete, is carried out, new tangible method for that is then developed. An examination on priority decision making system for maintenance and repair works is carried out by taking steel structure as an example. Furthermore, a development of diversification risk system targeted to destruction of structure, by taking disaster as am example, is made an attemp. Those works will make it possible to develop both structures which are hard to be deteriorated by sodium, and well-designed structure management system.
    Some important achievements, which could contribute to a development of road management system, have been made in this study by assuming usage of antifreezing admixture. However, a development of comprehensive management system comprised of technologies mentioned above are intended for in the first stage, only indication on the direction toward the comprehensive system is made against our objectives. Some examinations on what kinds of effects are botained by organizing the technologies dealt with in the present study will be made in the fixture.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), HOKKAIDO UNIVERSITY, 14208038