评估突发事件下的城市轨道交通(URT)网络弹性对于提升URT的运营水平具有重要意义。考虑URT网络拓扑结构及乘客出行影响，提出能够反映URT网络运营服务质量的网络性能指标，并以突发事件下网络性能的恢复速率为指标衡量了URT网络的弹性，以成都地铁网络为例进行了分析。结果表明：URT网络运营服务损失与突发事件持续时间成正比，相比于非换乘站，换乘站运营中断将造成更大的URT网络运营服务损失；URT网络弹性与突发事件持续时间成反比，且换乘站具有比非换乘站更高的网络弹性。最后，结合研究结果分别提出正常运营情况下及发生突发事件情况下URT网络的弹性提升策略。

Assessing the resilience of urban rail transit (URT) networks under emergencies has practical significance in enhancing the URT system’s operation. An URT network performance indicator that considers the URT network’s topology structure and passengers’ travel is proposed herein. The network performance indicator can reflect the quality of the transport service. Then, the URT network’s resilience is measured by considering the URT network’s performance recovery rate as an indicator. Finally, the resilience of the Chengdu subway network under emergencies is analyzed using the proposed models. The result indicates that the performance loss of the URT network is proportional to the duration of emergencies. Compared with non-transfer stations, the failure of transfer stations will lead to a higher URT network performance loss. The URT network’s resilience is inversely proportional to the duration of emergencies, and transfer stations possess higher resilience than non-transfer stations. Finally, resilience enhancement strategies of an URT are proposed under normal and emergency operation conditions, respectively, based on the results.

U239.5

国家重点研发计划项目(2017YFB1200701)