基于改进社会力模型的地铁车站应急疏散模型

Pedestrian emergency evacuation model of metro stations based on improved social force model

应急情况下的客流疏散对地铁车站运营安全至关重要。综合考虑行人心理状态和社会属性的影响,对行人感知范围进行了重新定义,并对应急疏散情况下的行人绕行效应进行了分析验证。应用Anylogic软件对上海地铁9号线松江大学城站的实际客流情况进行建模并进行对比分析。模型修正后,总体疏散时间减少了7.5%,出口2处滞留的行人密度降低了1.14人/m^2,行人行走距离增加了5.0%。经验证得出,改进后的社会力模型符合实际疏散情况。

The study of passenger evacuation in case of emergency is an important issue affecting the operational safety of metro stations.The article took pedestrian mental states and social property into consideration.It redefined pedestrian perception range,analyzed and verified pedestrian detour effect under pedestrian evacuation.The study built the simulation case and conducted comparative analysis of Songjiang University Town Station in Shanghai Metro Line 9 by virtue of Anylogic simulation software.After amending the model,the total evacuation time decreased by 7.5%,the pedestrian density dropped at Exit 2 by 1.14 passenger/m^2 and the detour distance increased by 5.0%.By testing and verifying,the improved social force model tallied with the actual evacuation situation.