Research On The Mechanism Of Passenger Congestion Propagation In Urban Rail Transit

With the rapid development of the urbanization process,the rail transportation system in major cities in China has gradually realized network operation,the service level of rail transportation has been improved,and the travel of residents is more convenient.But at the same time,the increasing passenger flow has also brought new challenges to the rail transit system.The passenger crowding caused by large passenger flow and its spreading phenomenon have occurred frequently,which has adversely affected the daily operation of urban rail transit.Therefore,it is of great significance to analyze the propagation mechanism of crowded passengers and formulate scientific relief measures accordingly.First of all,on the basis of determining the definition and category of urban rail transit passenger congestion,the influencing factors of passenger congestion are analyzed: passenger demand,road network topology,line transmission capacity,station service facilities,etc.The communication process and the influence of communication.After that,combined with the complex network theory,the urban rail transit network topology model is established,the statistical characteristics and network features of the Wuhan rail transit network are studied.Based on the complex network propagation network dynamics,a realistic urban rail transit passenger flow crowding propagation model is constructed.With the help of Python,the simulation of the crowded propagation state of passenger flow under different conditions was carried out.Finally,according to the reasons for the formation of passenger flow congestion,multi-level passenger flow congestion relief measures were proposed: the construction of new lines to relieve passenger flow congestion from the perspective of road network structure optimization;the operation of organizational optimization measures to improve line transmission capacity to relieve passenger flow congestion;The multi-station cooperative current limiting method of rail transit can relieve passenger flow congestion from the perspective of passenger flow demand control,and the effectiveness of the method is verified by an example.Through research,the propagation mechanism of urban rail transit passenger congestion is revealed,and a more comprehensive passenger congestion relief strategy is formulated,which provides a certain theoretical basis for the safe and efficient operation of urban rail transit.