基于GEM算法的地铁车站乘客疏散能力研究

为分析和提高地铁车站通过设施的疏散能力,保证乘客的运行安全,在分析地铁车站行人流运动特性的基础上,利用GEM(generalized expansion method)算法,求解地铁车站乘客疏散模型,通过计算得到车站疏散设施的拥堵概率、吞吐量等指标,给出地铁车站疏散能力的瓶颈点。以西直门地铁站为案例,证明将GEM算法应用于解决地铁车站人员疏散问题的可行性,并在此基础上提出合理的进站线路疏散优化方案。

Capability of Passenger Evacuation of Metro Station Based on GEM Algorithm

For analyzing and improving the evacuation ability of metro station facilities and ensuring the passengers'' safety, GEM (Generalized Expansion Method) algorithm for passenger evacua-tion was adopted to establish the model of passenger evacua-tion based on analyzing the characteristics of passenger move-ment. Congestion probability and handling capacity of the evac-uation facilities of the station were calculated; evacuation bottle-necks to the metro station were found out. Case study of Xizhi-men Station was carried out to verify the feasibility of GEM al-gorithm to determine the evacuation capability of a metro station with the evacuation optimization scheme proposed with feasible approaching lines to the station.