Methodology for Evaluating and Improving Road Network Topology Vulnerability
The situation that the road network loses its connectivity due to links unavailability is discussed in this paper. Since the connectivity of the network is always determined by its topological structure, the problem is defined as topology vulnerability. Mincuts frequency vector is chosen as the index for evaluating the networks topology vulnerability. The larger the index is, the more vulnerable the network is. Two ways for improving networks topology vulnerability are analyzed. Based on the networks topology vulnerability index, links criticality index is calculated. The larger the index is, the more critical the link is, as its failure is more likely to disconnect the network. Then the better the improvement effect of its disaster-resistant abilitys enhancement will have. Taken greedy triangulation network as reference, adding links onto the network will also improve its topology vulnerability. The topology vulnerability index is used for determining the priority of construction scenarios. A trial network is used to present the algorithm of the methodology proposed and Sioux Falls network is taken as an application example.
road network topology vulnerability criticality index disaster-resistant ability
TU Yingfei YANG Chao CHEN Xiaohong
School of Transportation Engineering, Tongji University, Shanghai, China
国际会议
长沙
英文
1834-1839
2010-05-11（万方平台首次上网日期，不代表论文的发表时间）