Study On The Emergency Evacuation Measures In Chongqing Light Rail Transit Underground Station Based On The Simulation Of Pedestrian Evacuation Behavior

Nowadays,the urban light rail transit becomes one of the most convenient traffic tools in citizens' life.Although it provides a lot of convenience to citizens,the light rail transit would make us in danger if management personnel in underground station could not take effective measures in the emergency evacuation when emergency events take place in a short time.Above all,in order to avoid these emergency events,author firstly evaluates the ability of emergency evacuation in urban rail transit station,secondly identifies the bottleneck of evacuation and finally puts forward the measures to improve the efficiency of evacuation.According to the features of Chongqing light rail transit and the complexity of underground stations,this paper chooses the Chongqing light rail transit underground station as the research object and uses computer simulation to study the emergency evacuation with optimized measures to improve the efficiency of pedestrian evacuation.Firstly,this paper makes an overview of emergency events in urban light rail transit about the definition,characteristics and types.Analyzing the factors to pedestrian evacuation in emergency events and describing the features of pedestrian evacuation from the individual to the group,this paper provides theoretical basis for the simulation.Secondly,with investigating and analyzing the types of underground station,traffic distribution and management status,this paper points out the problems in Chongqing light rail transit about pedestrian evacuation,evacuation equipments and evacuation measures to prove the necessity of this paper.Thirdly,based on the microscopic discrete modeling technology in cellular automata modeling,this paper takes the individual movement rules as cell transfer probability expression form to solve the problem that many people compete for the same cell with rational factor,familiar coefficient and guiding factor.Due to the simulation system founded by C# language in Visual Studio,this paper makes a simulation for the pedestrian evacuation in Nanping station in light rail transit Line 3 of Chongqing and gets the conclusion that there are still some bottlenecks in the operation system.Lastly,through analyzing the sensitivity of the model parameters,author discovers that each factor of the above is inversely proportional to the evacuation time,especially the guiding factor.According to the sensitivity analysis,this paper chooses theincreasing the degree of evacuees rationality,improving the familiar coefficient and strengthening the guiding factor as the basis to put forward the measures for pedestrian evacuation in emergency events in Chongqing light rail transit underground station.