Study On Operation Simulation Of Marshalling Station Based On Train Flow Data

Based on the analysis of domestic and foreign marshalling station simulation research results,based on computer simulation theory and technology,combined with the existing problems in the transportation organization of the Xinfeng town marshalling station,this paper designs and compiles a railway marshalling station operation simulation system,using the marshalling station The operation simulation system simulates the actual operation of Xinfeng Town Marshalling Station.Through the analysis of the simulation process and results,combined with the marshalling station flow allocation method,the structure of the arriving traffic flow at Xinfeng Town Marshalling Station is adjusted to realize the operation of Xinfeng Town Marshalling Station Optimization.This paper first discusses the simulation theory and method of the marshalling station operation simulation system.On the basis of theoretical research and model construction,it further analyzes the design and implementation of the marshalling station operation simulation system,and uses the multi-process activity scanning method to drive the system operation.Then run the marshalling station operation simulation system to simulate the existing traffic data of the Xinfeng town marshalling station,analyze the coordination of the simulation operation process and the ability to use each operation link,and get the links and influence reasons of the tight operation of the Xinfeng town marshalling station.According to the simulation conclusions,combined with the relevant theories and methods of the marshalling station allocation problem,a feasible train flow optimization strategy is proposed,the arriving train flow structure is adjusted,and the feasibility and excellence of the optimization strategy are verified through multiple simulations until the optimization is obtained.Arriving train flow structure,so as to obtain the optimized pick-up sequence and departure sequence,reduce the average waiting time and stay time of trains,and improve the operation capacity and smoothness of all links in Xinfeng Town Station.The data used in this paper directly reads the arrival train flow data file in the Xinfeng Town station database,carries out corresponding screening and processing of the train flow data,and generates the most complete arriving train flow data as the initial train flow data of the simulation system according to the train operation graph.Then combined with the provisions of various documents of Xinfeng Town Station,reasonable values and simplificaions of the initial parameters in the simulation system are carried out.Read the train information in the arrival train table,enter it into the marshalling station operation simulation system to start the simulation,and deduct the operation of self-made originating trains,direct trains and arriving disintegrated trains at the Xinfeng town marshalling station in all directions,and obtain the various operations in the simulation process.The train queuing status of the link and the number of various types of traffic.Record the relevant information of the train operation and waiting operation in the database during the simulation process.Observe the train operation,equipment occupancy,and queuing status displayed on each interface during the operation of the simulation system,analyze the time distribution law of the operation status of each link in the Xinfeng Town marshalling station,the busy link and the duration of the operation.After the simulation is over,the relevant files output by the simulation system are analyzed,and the arrival and departure rules of the current traffic flow structure and the disassembly rules of vehicles in each direction are obtained.Through the analysis of the simulation results under the existing vehicle flow structure,continuously adjust the parameters and early warning thresholds of the marshalling station operation simulation system,and then perform multiple simulations.Repeat the above steps until the tight link of the marshalling station operation is found,and the operation is determined.Influencing factors of the tense link.