Study On The Optimization Of Multiple Train Formation Operation Scheme For Urban Rail Trains Under Single Routing

With economic development and the continuous increase of urban population,the number of people choosing urban rail transit for commuting has increased rapidly,and many cities in China have also begun to operate more urban rail lines.However,with the expansion of the scale of urban rail transit lines,the challenges for operating enterprises are also significant;The inability to match the transportation capacity of the entire urban rail transit line with the high passenger flow has become the most difficult problem to solve at present.The operation and organization mode of multiple marshalling can achieve dynamic matching of transportation capacity and passenger flow,and can highly couple the operating lines and passenger flow characteristics during the transition process from peak to peak passenger flow.The existing fixed marshalling schemes have encountered problems of waste of transportation capacity during peak periods and insufficient transportation capacity during peak periods.In order to solve the current problems related to the operation of fixed marshalling trains in enterprises,this paper introduces prospect theory to optimize the operation scheme of multiple marshalling trains under single routing.The main work and research content of this paper are as follows:(1)Deeply explore the distribution characteristics of subway passenger flow,based on the real Automatic Fare Collection(AFC)data of urban rail transit lines,analyze the passenger flow distribution rules after processing,verify the distribution of subway passenger flow in the most representative non holiday different periods,and statistically analyze the travel choices and characteristics of passengers on this basis.(2)From an engineering perspective,the relevant key technologies restricting the formation of multiple trains are analyzed,and discussed one by one from the technical fields of multiple trains and fixed trains,vehicles,signal systems,shielded doors,station wiring,and other technical fields.(3)The introduction of prospect theory and the foregrounding of passenger travel time costs and enterprise operating costs have led to the establishment of an optimization model for urban rail train stop plans,which provides a research basis for the optimization model of operation plans(4)Build an optimization model for the operation plan of multiple train formation under single routing,operate large station vehicles and standard vehicles for single train formation and multiple train formation,and compare and analyze each plan.It is concluded that multiple train formation plays a key role in the peak and peak phase of the daily urban rail passenger flow.The model solution results can effectively reduce enterprise costs and improve indicators such as load factor and efficiency,proving the rationality and effectiveness of the model.