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Evaluation method of road network vulnerability for disaster by topological approach

Research Project

Project/Area Number 20K22429
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0303:Civil engineering, social systems engineering, safety engineering, disaster prevention engineering, and related fields
Research InstitutionKumamoto University

Principal Investigator

Ando Hiroe  熊本大学, くまもと水循環・減災研究教育センター, 助教 (00880056)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords道路ネットワーク / 脆弱性 / 頑健性 / 媒介中心性 / 最大固有値 / 部分的欠損 / 接続性 / ネットワーク形状論 / Network Science / 防災 / 道路整備
Outline of Research at the Start

非常時に重大な機能不全に陥らない道路ネットワークを構築することは,災害に強い社会を形成するために重要な要素の一つである.本研究ではネットワークの繋がり方に着目し,道路特有の性質を持つネットワークにおいて,脆弱性評価の要因となり得る形状的な特徴を見出すことを試みる.形状的特徴の観点から道路ネットワーク整備において効果的な区間や必要な程度を示す指針を確立し,道路整備がもたらす耐災化の向上もしくは低下の効果について明らかにする.

Outline of Final Research Achievements

The objective of this research is to construct road networks that do not cause serious degradation on a disaster. The topological characteristics that may contribute to vulnerability are analysed. Comparison and Organisation based on spatial and planar connectivity indices for regular and road netowrks revealed effective indices for networks with road-specific characteristics.
Focusing on the largest eigenvalues as a road network connectivity indicator, link enhancement plans for improving connectivity was proposed by maximising the largest eigenvalue. The impact of partial fialures was analysed by vulnerability evaluation considering connectivity, the results showed that the impact of failures based on the betweenness centrality is the largest in the road networks.

Academic Significance and Societal Importance of the Research Achievements

ネットワークの形状的特徴を表現可能なNetwork Science指標は計算が非常に簡便であり,ネットワーク規模や詳細度の制限も持たないため,あらゆる対象地域に適用可能であること,多くの既存指標が研究されているなどの利点を持つ.しかし,道路ネットワークは交差点に接続する道路の本数が限られることや地理的特徴などの空間的制約が存在する特殊なネットワークであり,これら特有の性質を考慮する必要がある.そのため,一般的な道路ネットワーク位相生成モデルを活用し,格子,ツリー,車輪といった規則的なネットワークと比較したうえで脆弱性に影響を及ぼす因子を明らかにしたことは意義があるといえる.

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] How Does Travel Demand Follow the Change in Infrastructure? Multiple-Year Eigenvector Centrality Analysis2021

    • Author(s)
      Ando Hiroe、Kurauchi Fumitaka
    • Journal Title

      Sustainability

      Volume: 13 Issue: 23 Pages: 13366-13366

    • DOI

      10.3390/su132313366

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Connectivity evaluation of large road network by capacity-weighted eigenvector centrality analysis2020

    • Author(s)
      Ando Hiroe、Bell Michael、Kurauchi Fumitaka、Wong K. I.、Cheung Kam-Fung
    • Journal Title

      Transportmetrica A: Transport Science

      Volume: 17 Issue: 4 Pages: 648-674

    • DOI

      10.1080/23249935.2020.1804480

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] IDENTIFICATION OF ROAD NETWORK FUNCTIONAL AND SPATIAL CHARACTERISTICS BY EIGENVECTOR CENTRALITY ANALYSIS2020

    • Author(s)
      安藤宏恵 倉内文孝
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management)

      Volume: 76 Issue: 4 Pages: 364-376

    • DOI

      10.2208/jscejipm.76.4_364

    • NAID

      130007958471

    • ISSN
      2185-6540
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 接続性の概念に基づく道路ネットワーク頑健性評価手法の検討2021

    • Author(s)
      安藤 宏恵
    • Organizer
      第64回土木計画学研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Evaluation of long-term road network improvements using multiple-year eigenvector centrality analysis2021

    • Author(s)
      Hiroe Ando, Fumitaka Kurauchi and Michael G.H. Bell
    • Organizer
      8th International Symposium on Transportation Network Reliability
    • Related Report
      2021 Annual Research Report
  • [Presentation] 最大固有値を用いた道路ネットワーク接続性向上に関する研究2020

    • Author(s)
      安藤宏恵,倉内文孝,朝倉康夫,中西航
    • Organizer
      第62回土木計画学研究発表会
    • Related Report
      2020 Research-status Report

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Published: 2020-09-29   Modified: 2023-01-30  

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