城市轨道交通网络突发事件影响客流量的计算

Calculation Method of Emergency Passenger Flow in Urban Rail Network

摘要:

城市轨道交通网络发生突发事件而造成临时性中断后,因列车运行延误具有传递性和扩散性,此时各相关车站会形成延误客流、绕行客流及损失客流.引入图论的方法建立城市轨道交通网络局部中断评价模型;再结合轨道网络单位时段内各站点间的起讫点出行分布历史或预测矩阵,得到了在各个受影响站点的各种受影响客流的评价模型.根据这些模型可以得到网络节点破坏后各相关站点随着时间的推移而不断变化的受影响客流量、绕行客流量、拥堵客流量、延误客流量、损失客流量、损失时间等参数.通过对上海轨道交通的局部网络的分析计算,证明了该应急处置参考模型的有效性.

Abstract:

Some stations and intervals may suffer a temporary breakoff due to emergencies of urban mass transit network.The transitivity and diffusivity of train operation delay may lead to delay passenger flow,detour passenger flow and loss passenger flow in some stations.Based on the structure of urban mass transit network and graph theory,the evaluation method of partial interruption were built up.Adopting these models,the affected passenger flow volume,delay passenger flow volume,detour passenger flow volume,loss passenger flow volume,congested passenger flow volume and the lost time of passenger flow could be calculated out as time in different stations.Calculation and analysis of the local network of Shanghai rail transit proves the effectiveness of these models for emergency disposition.