Abstract
In emergency, the importance of resilient road networks is widely accepted. As probabilities of rare huge disasters are low and varied, vulnerability analysis of road networks which depend only on shapes and other features of road networks is imporant. In this article, a triage method to choose important links is proposed to keep the connectivity of representative nodes on the network. The proposed method is based on the analogy of a mass-spring system mechanics and a Laplacian matrix of road networks. A triage analysis of the emergency transportation road network in Hokuriku, Shiga and Gifu region is carried out to demonstrate the applicability of the proposed method.
