城市轨道交通网络脆弱性分析

摘要

The urban rail transit network is an important part of an urban public transportation system.First,we generated the network models of the urban rail networks of Beijing and Shenzhen.We used the subway smart card data to estimate the passenger travel demands in the two urban rail transit networks.Next,we analyzed the topol-ogical structures of the two urban rail transit networks based on complex network theory and proposed the indices to evaluate the vulnerability of an urban rail transit network.Finally,we generated a two-layer public transporta-tion network to obtain a deeper understanding of the vulnerability of urban rail transit networks.Our empirical re-sults show that the distribution of vulnerable segments is similar in Beijing and Shenzhen rail transit networks. Averagely,Shenzhen urban rail transit network is more vulnerable.The vulnerability of an urban rail network is highly related with its network complexity.Urban bus transit network can reduce the vulnerability of urban rail transit system.%城市轨道交通网络是城市公交系统的重要组成部分。以北京地铁和深圳地铁为研究对象，建立两个城市的轨道交通网络模型，利用两个城市的地铁乘客刷卡数据，估计城市轨道交通需求OD；基于复杂网络理论分析两个城市轨道交通网络的拓扑结构，提出城市轨道交通网络脆弱性的评价指标；建立城市公共交通双层网络，对城市轨道交通网络的脆弱性进行更深层次的分析。研究结果表明：北京市与深圳市轨道交通网络脆弱边地理分布很相似，深圳市轨道交通网络平均而言更加脆弱；轨道交通网络的脆弱性与其网络复杂度密切相关；城市常规公交网络可以降低城市轨道交通系统的脆弱性。