考虑乘客出行容忍度的城市轨道交通网络的连通可靠性分析

Analysis of Connectivity Reliability of Urban Rail Transit Network Considering Passengers’ Travel Tolerance

城市轨道交通网络的连通可靠性对乘客的出行和网络的正常运营具有重要意义,为衡量城市轨道交通网络的连通可靠性,提出容忍系数确定车站间的可容忍路径.以车站间的可容忍路径数目衡量车站间的连通可靠性,并据此计算车站和网络的连通可靠性.以成都地铁为例,运用运营数据分析了考虑车站权重和不考虑车站权重时成都地铁网络的连通可靠性.通过计算和分析,确定了连通可靠性最强和最弱的车站并分析了成都地铁在不同时间段、不同容忍系数下的连通可靠性.结果表明,当容忍系数小于1.6时,容忍系数对成都地铁网络的连通可靠性影响很大.

The connectivity reliability of urban rail transit network has important influence on passengers’ travel and the operation of urban rail transit. In order to evaluate the connectivity reliability of urban rail transit network, the tolerable coefficient is proposed to determine the tolerable travel paths between pairs of stations. The connectivity reliability between pairs of stations is measured from the number of tolerable travel paths between them. The connectivity reliability of urban rail transit network is calculated with the connectivity reliability between pairs of stations. Chengdu’s metro is taken as an example, network’s connectivity reliability with the weights of stations and without the weights of stations are analyzed through operational data. The stations with the strongest and weakest connectivity reliability in Chengdu’s subway network are determined respectively. The connectivity reliability of Chengdu metro network during different periods and under different tolerable coefficients is analyzed. The result shows that the tolerable coefficient has a great influence on the connectivity of Chengdu metro network when tolerable coefficient is less than 1.6.