Study On Compilation Of High-speed Railway Train Operation Diagram Based On Daily Train Diagram

With the continuous improvement of China high-speed railway network,high-speed railway has become an important choice for passengers.Passengers traveling by high-speed railway have put forward higher requirements on the timeliness and accessibility of trains,and the demand for passenger flow shows regular fluctuations in time and space.In order to improve the economic benefits of railway enterprises and the comfort of passenger travel,it is necessary to compile train operation diagrams that can match the demand of passenger flow to guide the rational operation of trains.On the basis of summarizing the current research results,this paper studies the optimization theory and method of high-speed railway train operation diagrams that respond to dynamic passenger flow in a timely manner.Firstly,it analyzes the basic theory of the daily train diagram for high-speed railway,and studies the compilation method of the daily train diagram;secondly,constructs the optimization model of the high-speed railway daily train diagram,and designs a solution algorithm according to the characteristics of the model;finally,takes the Beijing-Shanghai high-speed railway as an example,compiles and analyzed the high-speed railway daily train diagram.The main research work of this paper is as follows:(1)Explain the concept of daily train diagram and summarize its characteristics.The required conditions of the daily train diagram are proposed from the aspects of passenger flow basis,operation ratio,train type,technical equipment and management mode.Based on the high-speed railway line conditions,technical conditions,transportation organization mode and operation management mode,the applicability of the high-speed railway daily train diagram is demonstrated.(2)Analyze the compilation mechanism of the daily train diagram of high-speed railway.The daily train diagram of high-speed railway is divided into fixed part and non-fixed part.Propose the idea of “non-fixed part should be compiled on the basis of keeping the fixed part relatively fixed,coordinate optimization of EMU routing and train operation diagram”,and design the compilation process.Research on the key technologies of high-speed railway daily train diagram such as passenger flow period division method,cross-line train running line layout method,EMU routing design method,and adjustment method of non-fixed parts.(3)Establish the minimum train travel time and the minimum connection time of the EMU as the optimization goal.The optimization model of the daily train diagram of high-speed railway is compiled with restrictions,safety interval restrictions,arrival and departure capacity restrictions,train arrival and departure time domain,EMU connection restrictions,etc.And an adaptive large neighborhood search is designed to solve the model.(4)Explain in detail the compilation process of the daily train diagram of the high-speed railway,take the Beijing-Shanghai high-speed railway as an example,analyze and evaluate the train operation diagram indicators,line passing capacity,train operation diagram balance,and EMU utilization indicators to verify the applicability and feasibility of the model.