Modeling And Simulation Of Passenger Micro Behavior In Urban Rail Transit Station Considering Heterogeneity

Urban rail transit attracts a large number of passengers due to its own advantages.The rapid growth of passenger flow brings great pressure on the passenger flow organization and train operation safety.The contradiction between supply and demand of stations with large passenger flow during peak hours is very prominent.How to improve the efficiency of passenger flow distribution and operation safety is an urgent problem to be solved in the development of rail transit.In this paper,from the perspective of passenger micro behavior and station control guidance,the various micro behaviors of passengers in the station havebeen studied.On this basis,combined with the actual survey data,the station passenger-flow simulation model was built to identify and analyze the passenger flow bottleneck problems existing in the current operation of the station.According to the specific problems,the corresponding control strategy and organization scheme were proposed and verified by simulation,and the optimization scheme was evaluated from the aspects of fluency,timeliness and comfort,so as to provide reference for station operation.Based on the above model,the station emergency evacuation simulation model was built to identify the passenger evacuation bottleneck and propose the corresponding evacuation guidance strategy,which can provide reference for the station emergency evacuation.(1)Analysis of passenger micro behavior andmustering and evacuation process.Firstly,from the concept of passenger flow,this paper expounded the types of passenger flow and analyzed the characteristics of passenger flow.Secondly,it elaborated the station facilities and the micro behavior of the passenger station.Then,the behavior characteristics of passengers in normal and abnormal situations,the factors that affect passengers’ micro behavior were summarized,and a system dynamics model was established to analyze the transmission mechanism of panic factor.Finally,the process of passenger flow distribution and emergency evacuation was analyzed.(2)Modeling and Simulation of passenger behavior considering heterogeneity.Firstly,considering the characteristics of passengers’ basic walking behavior,following behavior,avoidance and transcendence behavior,and companion behavior in different situations,this paper modified the parameters in the traditional social force model and established a passenger micro walking behavior model.Secondly,considering the heterogeneity characteristics of passengers in the station,the heterogeneity parameters of passengers in the station were extracted through investigation,and the passenger group in the station was simulated by using anylogic software,and the simulation model of passenger behavior considering heterogeneity was established.Then,taking the corridor scenario as an example,the effectiveness of the model was verified,and the passenger heterogeneity parameters in the model were adjusted to analyze the relationship between passenger heterogeneity and station collection and distribution efficiency.Finally,the effectiveness of the model in the emergency evacuation situation was verified,and evacuation simulation experiments were designed to study the impact of crowd heterogeneity on evacuation efficiency.(3)Modeling and Simulation of passenger decision behavior.Firstly,based on the decision theory,three kinds of gate selection strategy models were established,and the applicability of the models in different scenarios was verified by combining with the research data.Secondly,the paper analyzed the main factors affecting the choice of escalators in passenger building,established the behavior model of passengers’ choice between floors based on the random utility theory,and solved the model parameters with Stata software to verify the effectiveness of the model.Finally,the paper analyzed the route choice behavior of passengers in normal and abnormal situations,introduced the information interference factor to modify the social force model,studied the impact of real-time environmental information integrity on passenger evacuation behavior,and designed comparative simulation experiments to analyze the difference of evacuation efficiency.(4)The application of passenger micro behavior model in multi situation.First of all,this paper analyzed the related theories of passenger flow Bottleneck Identification,passenger flow organization and control.Secondly,taking Xi’an Xiaozhai station as an example,combined with the field survey data,the passenger flow simulation model based on the passenger micro behavior model was built to identify the passenger flow bottleneck under the current operation organization of the station,and the passenger flow optimization scheme was proposed and evaluated from the perspective of passenger flow organization and control.Finally,on the basis of the passenger flow simulation model,the passenger flow emergency evacuation simulation model was built,the evacuation bottleneck was analyzed,and the passenger flow evacuation guidance scheme waas proposed.The effectiveness of the scheme was verified by simulation,and the relevant suggestions for the passenger flow emergency evacuation organization were put forward.