An Optimization Research For Train Operation Scheme Of Urban Rail Transit Based On Travel Demand

The preparation of train operation scheme is the core link in the process of urban rail transit operation organization and planning.It is required to be market-oriented and to reasonably allocate limited train and rail resources on the basis of passenger flow demand,so as to achieve a balanced transportation capacity and improve passenger services quality and core competitiveness.The passenger flow demand for urban rail transit will vary significantly with factors such as operating seasons,operating periods,stations and line functions.Based on the relationship between tourist demand and train operation scheme,this paper studies the optimization problem of urban rail transit train operation scheme considering tourist demand.The main work and results are as follows:(1)This paper expounds the compilation theory of urban rail transit train operation scheme from three aspects: the main content of the train operation scheme,the influencing factors and the model theory.Put forward the basic principles that should be followed in the preparation of the route plan and the stop plan.The direct and indirect factors affecting the preparation of the train operation scheme are clarified,and the relevant calculation methods are proposed.From the perspective of model applicability,the optimization methods and mathematical models to describe this kind of problem are analyzed.(2)Relying on the space-time network framework to establish an optimization model for the train operation scheme,taking the minimum operating cost and passenger travel cost as the optimization goal,considering the line passing capacity,station receiving and dispatching capacity,train transportation capacity,train running logarithm,passenger flow demand,network flow balance and other constraints,an optimization model of urban rail transit train operation scheme based on space-time network is established.(3)Taking the Suzhou rail transit system as the research object,on the basis of the online network AFC data processing results,this paper studies the passenger flow demand and the time-space distribution characteristics of the line network.This paper focuses on the analysis of the passenger flow variation rules of stations with obvious tourism functions and Line 1 in different operating seasons and periods.Summarizes the differences in the spatial and temporal distribution characteristics of tourist and commuter passenger flow.In terms of passenger flow demand,the tourist passenger flow during holidays is much higher than that on weekdays and weekends.In terms of time distribution characteristics,the all-day time distribution of tourist passenger flow throughout the day presents a spindle-shaped distribution,while the commuter passenger flow presents a bimodal distribution.In terms of spatial distribution characteristics,the travel directions of various types of stations in different operating periods have significantly different directivity.(4)Relying on Suzhou Rail Transit Line 1,three different types of train operation optimization schemes are designed from changing the marshalling number of trains,adding running route and skip-stop stations.Using the actual passenger flow data in different operating periods as the model input to solve these three optimization schemes.Set up a comparison scheme and introduce traffic indicators and passenger indicators.From the perspectives of cost,departure interval,train running time,and passenger travel time,analyze the impact of different optimization schemes on economic benefit and service level.The applicability and correctness of the research content in this paper have been verified.This article includes 47 figures,45 tables,and 69 references.