Development of a Decision Model for Mitigating the Impact of a Large-Scale Disaster on Road Transport Networks

2020 Fiscal Year Final Research Report

• Project/Area Number: 18K04613
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 25010:Social systems engineering-related
• Research Institution: Kochi University
• Principal Investigator: Sakamoto Jun 高知大学, 教育研究部自然科学系理工学部門, 講師 (90548299)
• Co-Investigator(Kenkyū-buntansha): 原 忠 高知大学, 教育研究部自然科学系理工学部門, 教授 (80407874)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: 道路復旧 / 大規模災害 / 津波 / アクセシビリティ / 南海トラフ地震 / 道路啓開

Outline of Final Research Achievements

This study proposes a decision model to create a resilient road network for minimizing damaged areas after massive earthquakes. As case study areas, Shikoku and Kochi, Japan, the research have two topics: road recovery planning and road construction planning. Road recovery planning focuses on the situation after massive earthquakes. It enables to choose a damaged road for prioritizing recovery considering recovery day and pairs connecting important districts for an emergency. Road construction planning focuses on future road construction planning. It enables a road that should construct priority. Results clarified that it is essential to consider road redundancy and the potential for an emergency.

Free Research Field

防災計画，都市計画，交通工学

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は，道路の防災機能の評価について，広域的な道路寸断からの回復過程を道路ネットワーク全体の観点から検討することができる．道路ネットワークと道路啓開計画を用いで評価を行うことで，災害発生後の道路復旧計画だけでなく，将来の道路整備計画への応用が期待できる．また，全国各地で進められている道路啓開計画をはじめとしたインフラの減災計画・老朽化対策計画へのフィードバックも可能であり，さらに津波による被災が予測される太平洋沿岸地域に対して，現実的な道路啓開計画，迅速な支援物資の配送，防災機能の配置計画などの社会施策の立案にも資する．