城市轨道交通有权网络相继故障可靠性研究

城市轨道交通各条线路和车站因其所承载客流量多少不同在网络结构的地位也不同，仅从网络结构来评价可靠性可能会产生误判.本文根据地铁网络智能卡数据构建了网络权重矩阵，结合网络结构确定了无权、有权网络的复杂网络参数，并基于有无权重 两个网络分别定义了4 种相继故障的策略参数及网络可靠性评价模型.以北京市轨道交通为实例系统性分析有无权重两个网络的可靠性，结果表明，模型可操作性强，弥补了城 市轨道交通网络可靠性研究的不足，加载了客流的网络脆性更明显，站点重要性排序也 发生较大变化.

Cascading Failures in Weighted Network of Urban Rail Transit

Since the importance of urban rail transit lines and stations in the network structure are affected by the passenger flow volume, the reliability evaluation only from the network structure may produce misjudgments. In this paper, a weighted network model with section passenger flow as edge weight of urban rail transit is constructed based on the metro smart card. For the unweight network and weighted network, the network characteristic parameters and failure strategy parameters are determined. Based on four cascading failure strategies, a network reliability model is constructed. To compare the reliability of these two kinds of networks, taking the case of Beijing Subway as an example, the results show that under the same attack mode, the network vulnerability and the importance sort of stations have larger variety in weighted network. So, the weighted network can reflect the reliability of real network more accurately. The validity of the model is verified, which makes up the gaps in reliability research of urban rail transit network.