Research On Propagation Mechanism And Evacuation Scheme Of Large Passenger Flow In Urban Rail Transit

As of December 31,2021,44 cities in China have opened rail transit,among which Beijing,Shanghai,Guangzhou,Shenzhen and other cities have officially formed network operation,and Tianjin,Chongqing,Nanjing,Wuhan and other cities have also vigorously strengthened the development of rail transit,which also shows that China’s rail transit is making great strides towards the era of network operation.With the continuous development of urban rail transit,sudden passenger flow is also common,which not only affects the operation efficiency of rail transit,but also increases the safety risk.Therefore,the research on urban rail transit congestion propagation is particularly important.Taking the sudden large passenger flow of urban rail transit as the object,this paper first analyzes the passenger flow characteristics of urban rail transit network and the temporal and spatial distribution characteristics of large passenger flow,and summarizes the bottleneck position of large passenger flow in stations.Based on the passenger flow carrying capacity of the platform,the judgment method of station congestion is put forward.Secondly,based on the complex network science theory and based on the urban rail transit network of Beijing,Shanghai,Guangzhou,Shenzhen and other cities,this paper constructs its network topology,summarizes the common characteristics of urban rail transit network structure,establishes the rail transit Congestion Propagation model,and obtains the general law of Congestion Propagation.Finally,on the basis of summarizing the propagation law of urban rail transit congestion,combined with the social force model,this paper simulates and analyzes the dynamic propagation process of sudden large passenger flow of urban rail transit,puts forward the evacuation organization scheme,and verifies the effectiveness of the evacuation scheme through simulation.