京都大学桂キャンパスCクラスター 人融ホール

Rescue centre location in degradable transport networks 「災害時に寸断される可能性のある交通ネットワークにおける救援センターの配置問題」

The 3rd International Seminar of Committee of Infrastructure Planning and Management, JSCE in FY2012
2012年度土木計画学研究委員会 第3回国際セミナー(通算 第61回国際セミナー)

題目:Rescue centre location in degradable transport networks

講師:Prof. Michael G H Bell
(Professor of Transport Operations and Director, PORTeC
Department of Civil and Environmental Engineering, Imperial College London)

日時:2012年5月8日 16時~18時

場所:京都大学桂キャンパスCクラスター 人融ホール

概要:Areas which are prone to natural or man-made disasters, such as earth quakes, fires, floods or attacks, are reliant on the residual transport network for the rescue of survivors. Pre-disaster planning requires assumptions about how the transport network may degrade. This paper focuses on the location of rescue centres in earth quake zones and assumes that links in mountainous areas and closer to fault lines will sustain higher levels of damage. Sichuan province is China is chosen to illustrate the problem. To facilitate a cautious approach to rescue centre location, it is assumed that the transport network is subject to attack by node-specific demons with the power to degrade one link leading out of every node. The mixed strategy Nash equilibrium for the non-cooperative zero sum game between rescuers seeking to reach population centres and the node-specific demons defines our interpretation of the worst credible case link damage probabilities, which in turn leads to pessimistic estimates of travel costs from rescue centres to population centres. These costs are used to find the best locations for a limited number of rescue centres where each has an upper limit on the maximum number of households it can cover. The rescue centre location problem is solved initially by a greedy heuristic and then by a relaxation method.