Study On Integrated Control Of Passenger Flow On Urban Rail Transit Lines

Urban rail transit plays a backbone role in the public transport system.A few days ago,it was under great pressure of passenger flow while exerting its advantages of large volume,high speed,convenience,safety and so on,especially in therush hours.Different from the urban road traffic system,the congestion of passenger flow in the urban rail transit system does not enlarge the running time of the trains on the line,but may reduce the service level of the system,so it is necessary to analyze this problem.Make corresponding passenger flow control strategy to alleviate passenger flow congestion.Based on this,this paper mainly discusses the traffic congestion of urban rail transit,aiming at many stations of rail transit lines.The research mainly covers the following points:1.Analyzing the characteristics of urban rail transit passenger flow,the law of passenger flow congestion propagation and the related contents of passenger flow control from three levels of urban rail transit station,line and network,and summarize the research status of related fields at home and abroad;2.The paper analyzes the propagation process of passenger flow on urban rail transit lines,takes into account the temporal and spatial diffusion characteristics of rail transit passenger flow,introduces the concept of passenger flow propagation coefficient,simulates the transmission of passenger flow in urban rail transit system in the morning and evening rush hour,explores the correlation between multiple rail transit stations and the relative lag of passenger flow control measures in the field subway station,and imagines the cooperative passenger flow control of rail transit lines before the passenger flow congestion in rail transit system;3.The principle of passenger flow congestion,the congested stations are divided into primary congestion and secondary congestion,and the causes of passenger flow congestion in urban rail transit stations are deeply analyzed.The idea of controlling passenger flow from source station is put forward,and the method of "tracing back to source" is implemented;4.Taking full account of the strict limitation of train capacity in rush hour,the number of stranded passengers on the platform of urban rail transit station is analyzed based on passenger flow conservation model,and the passenger flow control period is divided into one time slice.The final goal of the model is to minimize the total passenger flow delay time and maximize the benefit of the dynamic system.The cooperative passenger flow control model of rail transit line is constructed,and the passenger flow control scheme of subway peak period is generated according to the results,including the station selection of subway passenger flow control,the control period determination and the control intensity control;5.Study the train transportation organization scheme of rail transit under the condition of congestion in the rush hour of subway system,and optimize and adjust it.According to the characteristics of the internal congestion of the rail transit system,the stopping scheme and the train crossing are further optimized;6.Finally,the case of Chengdu Metro is given.Compared with the actual operation of field control,the number of passenger flow control in this paper is smaller and the time is shorter.But the control time is ahead of schedule and accords with the idea of pre-customer flow control.The model results show that the model can play a good role in passenger flow control.