Design And Optimization Of Train Parking Scheme Based On Total Travel Time

As we all known,the advantages of city rail traffic compared to other modes of transportation is more and more obvious,such as safety,high speed,no pollution,so the choice of more and more passengers city rail transit way,leading to the subway load increasing,the daily peak sooner or later or sudden conditions.The large passenger station waiting passengers to increase,and after the train car does not have a certain capacity,unable to transport passenger station in a timely manner,coupled with the continued influx of passenger flow will cause the waiting passengers piled up,thus forming a large passenger flow pressure on the platform,not only increase the passenger travel time,reduce passenger travel efficiency,and even the threat of passengers personal safety.Therefore,it is necessary to analyze and study the train trip plan whether in design level or operation level.It directly or indirectly determines the waiting safety and satisfaction degree of passengers on crowded platform.The work of this paper is mainly carried out from the following four points: first,based on the analysis of the current domestic and international jump stop schemes,the critical condition and jump stop plan for train running and stopping are studied.Secondly,combined with the constraints in Shanghai rail transit operation and dispatch regulation,a model is established according to the passenger flow characteristics of Shanghai rail transit,and solved by genetic algorithm.Finally,the case study of Shanghai rail transit line 3 is carried out,and the results are compared and analyzed.It is verified that the rationality of the new hopping scheme is analyzed,and it can provide reference for the operation organization of urban rail transit.The specific contents of the paper are as follows:(1)This paper introduces the basic concept of jump stop scheme and jump stop type,focusing on issues related to passenger trip plan,including setting principles and conditions for implementation of passenger jump stop scheme and the advantages and disadvantages as well as the train jump jump stop the steps of optimization design,so as to jump for the follow-up study of the train plan to provide theoretical support.(2)Analyzes the factors that influence the jump program,from the qualitative analysis of the influence factors of passenger flow jump stop,quantitative analysis of starting conditions on passengers from the station to stop jumping scheme of the interaction between the two,eventually reached the critical condition of jump stop start,the influence factors of passenger flow includes three parts respectively,time section OD and three passenger flow distribution characteristics;factors for the operation of load station.The critical conditions of the jump stop can be set up to determine the critical condition for the optimization model of the train jumping and stopping scheme below.(3)Based on the total travel time of passengers,a single objective optimization model of passenger trip and stop scheme under the condition of crowded passenger stations at the peak stage of urban rail transit is established,and the algorithm solution of the model is studied.(4)In Shanghai Metro Line 3 for case analysis,to build the jump stop optimization model and use genetic algorithm to solve the problem,obtained during the morning rush hour train trip matrix,the analysis results to verify the validity and practicability of the optimization model of the jump stop.