Research On Through Operation Scheme Of Multi-System Rail Transit

At present,in the new stage of urbanization development,facing the limited space and other environmental resources in the central urban area,a large number of cities choose the multi-core modern urban structure surrounded by satellite cities.With this,the number and density of urban rail transit lines in China have also increased greatly,and the process of multi-standard rail transit networking has been promoted rapidly.In order to ensure the efficiency and smoothness of passengers’ travel process and open up the network connection points,it is a general trend for rail transit operation mode to change from single mode independent operation to multi-standard combined transport.This paper aims to analyze the characteristics of rail transit operation through the research and examples of rail transit operation at home and abroad,mine and summarize the characteristics of rail transit operation of multi-mode rail transit,and analyze the key problems of operation organization such as passenger flow conditions,train speed and secondary overtaking influence in the process of rail transit operation of multi-mode rail transit,Through the establishment of the model to determine the optimization method of multi-standard train operation under the condition of unequal speed rail transit,and on this basis,the example analysis is carried out to obtain the specific operation organization scheme,verify the feasibility and accuracy of the model,provide a reference for the specific solutions to the multi-standard rail transit intersystem transport problems,and then promote the development of modern comprehensive transportation system.The details are as follows:(1)This paper summarizes the characteristics of multi-system rail transit-operation in theory,summarizes the advantages and disadvantages of multi-system rail transit operation compared with other connection modes,analyzes the similarities and differences and operation organization difficulties between multi-system rail transit operation and single system rail transit operation,and compares the respective characteristics and applicable conditions of "replacement" rail transit operation and "plug-in" rail transit operation.(2)This paper studies the key problems of multi-system rail transit transit-operation from the whole process of opening transit operation,and analyzes the passenger flow conditions required for opening transit operation.By analyzing the influencing factors of train speed after passing the track,a framework for determining the best matching speed after passing the track is constructed.This paper analyzes the causes of secondary overtaking of unequal speed trains in the same line operation and the impact of multiple overtaking on the operation organization of multisystem rail transit.(3)Considering the difference in train speed after passing the track and the impact of secondary overtaking on rail transit operation organization,taking the total travel time saved by passengers after passing the track as the objective function,the optimization model is established as long as possible by maintaining the characteristics of the high speed and long distance station spacing of the local railway.Meanwhile,several common algorithms for optimizing the operation scheme are compared and analyzed,and the regional multisystem rail transit super network is determined and optimized to adapt to the algorithm solution.(4)Taking Chongqing rail transit as a reference,this paper determines the reference background of the example,applies the above theory and model to analyze the example,obtains the specific scheme of multi-system rail transit operation,and verifies the implementation effect of the scheme.