Research On Passenger Emergency Evacuation Time Model Of Subway Station

Due to the advantages of large traffic volume,punctuality,celerity and environmental protection,subway has become a kind of public transportation mode favored by urban managers.In recent years,with significant increase of China's subway mileage,the pressure of safe operation of subway has also increased.Because the subway is deeply buried in the ground,passengers can only be distributed through the subway station with complex structure.Therefore,in case of an emergency,it will easily cause serious economic losses and adverse social impact if the evacuation is not timely.Therefore,studying the emergency evacuation time of passengers in subway stations in case of emergencies to improve the emergency evacuation level of subway stations can not only improve the travel safety of citizens,but also provide a basis for the optimization design of subway stations.This paper takes subway station pedestrian evacuation time as the research object.The author firstly summarizes and analyzes the research status of pedestrian flow theory,pedestrian evacuation theory and pedestrian evacuation modeling and simulation at home and abroad,the relevant definitions and calculation formulas of evacuation time in China's subway design code(GB50157-2013)and the United States' NFPA130 are also analyzed and compared.Secondly,the movement characteristics and speed-density curves of pedestrian flow at different points in the station were obtained by analyzing the measured data of pedestrian flow movement,which provided data support for the following construction of pedestrian evacuation time model in subway station.Thirdly,according to the traditional evacuation time calculation formula,the evacuation time is divided into three parts: time for alighting of pedestrians,time of walking through facilities and waiting time before entering facilities.by using the early stage of the acquisition data and existing research results,the three part was respectively analyzed,eventually subway station evacuation time model of this article was developed.Finally,by taking the liberation of the road station as an example and setting up four kinds of evacuation,this model is used to calculate evacuation time in different situations,the results were compared with the calculation results calculated by China and the United States standards.The accuracy of the model was verified.