Research On Route Passenger Flow Allocation Based On Reliability Of Urban Rail Transit

At present,the development of urban rail transit is very fast.More and more cities have entered the stage of rail transit network operation,and the development characteristics of urban rail transit system have become more complex.At the same time,passengers rely more and more on rail transit system,and travel routes become more diversified.Whether the routes and stations in urban rail transit network are reliable or not directly affects passengers'travel choice,thus affecting the overall optimal strategy of traffic management.Firstly,based on the analysis of the network characteristics of urban rail transit and its influencing factors,this paper puts forward the definition of comprehensive reliability considering the characteristics of urban rail transit network and station,analyses the internal and external factors affecting the reliability of urban rail transit station,and gives the calculation method of comprehensive travel time of urban rail transit station.The travel time is divided into theoretical travel time and travel delay time.The reliability model of single-path travel time is established.The system reliability model of OD pair is given through the parallel relationship between OD pair and effective path.Secondly,Through the analysis of the function of urban rail transit network line and station,the classification of line function location and station function location is determined;the topological structure of Beijing urban rail transit network is established,the development characteristics of urban rail transit network and the variation rules of high reliability stations are analyzed,and the high reliability stations within the rail transit network are identified and the optimal stations for passengers to travel are selected.It is concluded that high reliable stations are mainly transfer stations for trunk and auxiliary lines.The relationship between the reliability of urban rail transit stations and the surrounding areas of rail transit is analyzed,and the development strategies for improving the reliability of urban rail transit stations are put forward.Finally,Based on the OD pair system reliability model,the algorithm of impedance stratified multi-path unbalanced passenger flow distribution model is proposed,and the processing methods and principles of different types of passenger flow after interval failure are proposed.The Beijing rail transit operation network is selected as the research object,and the relevant data obtained from the actual investigation are combined.The model is validated by an example,and the results prove the operability and correctness of the model.