Research On Express-local Train Mode Of Urban Rail Transit Parallel Line

With the development of urbanization,the rail transit of many cities in our country has built a backbone network,and the rail transit network has gradually taken shape,which has also been accompanied by a line form of merging.As the pressure of the existing line passenger flow increases,the new line of the combined line can play a role in sharing the pressure of the existing line passenger flow.At the same time,the passenger flow of the new line will also be affected by the existing line,which in turn affects the determination of the new transportation organization method.At the same time,with the differences in people’s travel,fast and slow trains can also be considered as a transportation organization method.Considering the impact of passenger flow sharing on parallel lines,determine the most suitable transportation organization mode based on passenger flow characteristics.Therefore,this article will combine actual scientific research projects to focus on the research and consideration of the urban rail transit organization under the form of parallel lines,and mainly do the following research work:(1)The line form considering the passenger flow sharing is proposed,and the line division of labor is summarized.Based on the characteristics of the fast and slow train operation mode,the applicability and setting conditions are analyzed.(2)Describe the effective path set through a mathematical model,and establish an effective path set solution method based on the upper limit condition of the number of transfers.For the parallel lines,a model of the parallel station scheme that maximizes the travel time benefit of passengers considering passenger flow distribution is constructed,and the genetic algorithm is used to solve the problem.Lay the foundation of passenger flow for the follow-up research on the organization method of fast and slow car transportation.(3)Based on the characteristics of traditional railway combined with urban rail transit,the paper considers the passenger flow characteristics of parallel stations in the form of parallel lines,and conducts research on the transportation organization plan of express and slow trains,considering the loss of system capacity,crossing points,and travel plans.Design and evaluation.Provide ideas for the planning and design of urban rail transit express and slow trains and transportation organization.(4)Taking the Chengdu Metro as an example,the passenger flow distribution model is used to solve the problem.Under the line form of Line 1 and Line 18,the passenger flow distribution of the existing line and the new line will affect Line 18 based on the passenger flow characteristics of the station.The speed and slow train mode is used to design the operation plan,and the station type,train stop plan,speed and slow train operation plan and operating time are determined.