Operation Organization Optimization Of High-speed Railway Station Considering Variable Configuration

Train route allocation is a key task in the organization of high-speed railway station operations,and variable configuration is an important trend in the development of transportation organization in the future.The combination of the two will further increase the complexity of station operation organization.A reasonable train route distribution plan has an important impact on the safety and order of train operation and improving the efficiency of station operation organization.Through analysis of the characteristics of the station layout of high-speed railway stations,it is clarified that a hub station with sufficient carrying capacity of arrival-departure tracks and a large net passenger flow value is suitable for organizing variable configuration of trains.By analyzing the timing diagram of station equipment occupied in the operation process of different types of trains,the technical operation process of station reception and departure is clarified.This paper studies the influence of variable configuration on station operation organization,in combination with automatic turnout grouping,train route generation,route conflict identification and resolution,and on the basis of considering the integration of station throat area and arrival-departure track application,the multi-objective mathematical model of station operation organization optimization is constructed with the minimum route cost occupied by station operation scheme and the equilibrium of arrival-departure track occupation as optimization objectives.A solution framework based on "constraint method" is given.When making different concessions to the minimum route cost,the model solver gurobi is used to solve the problem,and the Pareto optimal solution set can be obtained.The solution results show that when making 1.9% concessions to the minimum route cost,the occupancy balance of arrival-departure tracks can be improved by 66.2%,which is taken as the comprehensive application scheme.Compared with the feasible scheme randomly generated,the comprehensive application scheme has greater optimization in route cost and equilibrium of arrival-departure tracks.Based on the discrete event principle and Anylogic simulation software,a simulation model of high-speed railway station operation organization considering variable configuration train operation is established.The simulation model can be used to simulate and verify the train route allocation scheme in the station operation plan,analyze and calculate the station capacity through the buffer time in the compression scheme.The simulation result of "scheme validation" shows that all trains can arrive and depart on time according to the planned scheme.The simulation result of "scheme compression" shows that the utilization rate of station capacity is 74.1% within the time range of the planned scheme,and the compressed scheme can increase 23 trains in the same transportation organization mode.A total of 61 figures,24 tables,65 references.