突发事件下地铁车站应急疏散路径配流研究

Study on Flow Allocation of Emergency Evacuation Path in Subway Station under Emergency

文中重点分析地铁车站内通道和楼梯处的客流密度与速度的关系,研究站内设施的独立疏散能力.将地铁站内布局结构抽象化,构建走行网络,以Dijkstra算法为基础进行分支搜索来寻找有效疏散路径,并提出多源点客流分配模型,计算各过程所耗费的疏散时间.以南京珠江路站为例,利用调研数据,假设不同情景下的地铁站应急疏散,计算疏散耗时,以检验模型可行性.

The relationship between passenger flow density and speed at passages and stairs in subway stations was analyzed, and the independent evacuation capacity of facilities in the stations was studied. The layout structure in the subway station was abstracted to construct the traveling network, and the branch search was carried out based on Dijkstra algorithm to find an effective evacuation route. The multi-source passenger flow distribution model was proposed to calculate the evacuation time consumed in each process. Taking Zhujiang Road Station in Nanjing as an example, using the survey data, the emergency evacuation of subway stations under different scenarios was assumed, and the evacuation time was calculated to test the feasibility of the model.