Study On Emergency Evacuation Scheme Of Subway Transfer Station

Subway has gradually become an important part of urban traffic with its advantages of large traffic volume,fast speed and convenience.Although the subway safety system has been improved year by year,the subway station structure is complex and closed.Once an emergency occurs,it may cause serious personal and property losses.Especially in the peak period when the passenger flow is large,it is very important to carry out rapid and safe emergency evacuation.On the basis of previous studies,this paper discusses the relevant theories of subway emergency evacuation,analyzes the subway station facilities and their design carrying capacity,mainly analyzes the differences between the design carrying capacity and the actual passing capacity of stairs and escalators,and gives the recommended values of the actual capacity of stairs and escalators by means of Any Logic simulation and investigation,so as to provide reference for subway design specifications Some suggestions are put forward to revise the value of the carrying capacity.Then,I select the Guangji South road transfer station of Suzhou Metro as the research object,carry out field research and data collection,analyze the structural characteristics of Guangji South Road station,investigate the passenger composition and behavior characteristics of Guangji South Road station,analyze the evacuation facilities,evacuation streamline,evacuation potential problems,and calculate the length of evacuation path,which lays a foundation for subsequent simulation modeling,parameter setting and time optimization Basics.The emergency evacuation model of Guangji South Road transfer station is established by using Any Logic simulation software,which is divided into two evacuation scenarios of line 2 and line 1.The platform layer is simulated according to three schemes: nearby evacuation,flow allocation according to the maximum carrying capacity of facilities and flow allocation according to the actual carrying capacity of facilities.The evacuation time,area density and other data are output and compared The scheme of international capacity assignment evacuation can reduce the time of passengers leaving the platform.Then,the passenger walking path of the station hall floor is simplified,and the fastest path priority saturation method is used for the exit selection optimization.The optimized evacuation time of line 2 is reduced by 90 s,and that of line 1 is reduced by 61 s.This paper puts forward the evacuation scheme of platform,station hall and exit for the emergency evacuation of Guangji South Road station,and also provides some guidance and suggestions for the emergency evacuation of other multi exit,medium and deep buried subway transfer stations.