Study On Assignment Of Passenger Flow Path And Identincation Of Importance Of Urban Rail Transit Stations And Section

With the rapid development of urban rail transit scale and passenger flow,more and more rail transit stations and lines are overloaded,which makes us pay more and more attention to the safe operation and operation management of urban rail transit network.Therefore,studying the importance and classification of stations and sections in the rail transit network can not only help managers formulate and improve management measures,but also have important significance for road network planning and urban layout research.First,this article introduces the passenger flow simulation system of urban rail transit(UTPS),introduces the basic functions of the system,and builds the Beijing urban rail transit network system based on this,and uses AFC passenger flow data for a typical working day,Carry out passenger flow simulation and realize a comprehensive analysis of the simulation results,laying a foundation for subsequent research.Secondly,based on the detailed introduction of the complex network theory,the importance evaluation method of station and line under the static network is studied,and the network characteristics of the Beijing urban rail transit network are analyzed based on the network indicators calculated by UTPS.Next,the thesis studies the importance of station and section based on passenger flow,and establishes the importance evaluation indexes of station and line based on the actual passenger flow of the road network.And using the UTPS system,under the assumption that all passengers choose the shortest path in the all-or-nothing passenger flow assignment mode,the passenger flow in Beijing is simulated,and the simulation results are used to evaluate the importance of stations and lines.It also analyzes that there are large errors in the simulation results of the all-or-nothing passenger flow assignment mode.Then,the paper researches on the urban rail transit passenger flow path assignment model.The factors that make up the comprehensive impedance of travel are analyzed.Focused on the analysis of the impact of congestion degree.Based on the current congestion quantification formula,a comprehensive impedance function considering the impact of congestion is established.A logit model for passenger flow assignment is proposed.Based on the simulation error of UTPS,the application scope and accuracy of each congestion function are studied and analyzed.Finally,the passenger flow path assignment model established by the study was imported into the UTPS system,and the passenger flow in Beijing was re-simulated.The simulation results were used to systematically evaluate the station and section importance of urban rail transit in Beijing.