Research On Compilation Of Periodic Train Operation Diagram For High-speed Railway

With the rapid development of China’s high-speed railway,the research on its transportation organization mode is also ongoing.By analyzing the international examples of periodic operation of Shinkansen in Japan and high-speed railway network in France,this paper sums up the feasibility of periodic operation of high-speed railway trains.Combined with the line status and train types of Xi’an Lanzhou section of Xulan high-speed railway,it comes to the conclusion that this section of high-speed railway can adopt periodic operation mode of transportation organization.Finally,the paper makes a practical summary of the research by using the train diagram software.The research mainly includes three points:(1)Through the theoretical research on the periodic operation of train diagram,this paper analyzes the compilation elements of periodic train diagram of high-speed railway,summarizes the compilation process and characteristics of periodic train diagram of high-speed railway,provides a theoretical basis for the compilation of periodic train diagram,and summarizes the feasibility of periodic train operation,because not all railway lines are suitable for use By studying the characteristics of domestic and foreign railway lines and the types of EMUs,this paper determines the conditions for selecting the railway lines with periodic operation mode.(2)Through the introduction of module parameters,the problem of over cycle of running line is solved reasonably.Through qualitative and quantitative factors,the determination method of unit cycle length is given.The problems of train running line layout at departure station,the determination of train arrival and departure sequence,and the conflict of running line are solved reasonably.Finally,the problem of EMU bottom routing adjustment is studied,which is of great significance to the compilation of train diagram Key technical problems have found a reasonable solution.(3)The core part is the establishment of train diagram compilation model in high-speed railway train unit period.The core idea is PESP model.Firstly,the constraint graph of PESP model is studied and summarized,and the idea of machine sequencing is applied to the study of periodic train diagram.A single objective integer programming model with the shortest travel time of EMUs as the goal is established,which considers the periodic constraints of train arrival and departure time,safe departure,arrival and interval of adjacent trains The constraints of safe running time,train running time in section and train stop time are solved by using WebSphere ILOG CPLEX.