Research On Coordination And Optimization Of Station-Line Capacity Of High-Speed Railway Junction

With the construction and operation of high-speed railways,high-speed railway junction tend to become bottlenecks that restricting transportation capacity.Therefore,it is of great significance to study the coordination and optimization of high-speed railway junction station-line capabilities for improving the quality and efficiency of high-speed railway transportation.Starting from three aspects: station system,line system and synthesis,the concept and calculation method of transportation capacity coordination degree are clarified.Under the premise of meeting transportation demand,a high-speed railway junction station-line capacity coordination optimization model based on transportation capacity coordination degree and economic benefit is established,and the multi-objective optimization model is solved.The research results show that the coordination and optimization model of high-speed railway junction station-line capacity based on demand matching and economic benefits can clearly show the utilization of transportation resources in the high-speed railway railway junction,and improve economic benefits.Optimization schemes are provided for improving economic benefits and improving the allocation efficiency of transportation resources in high-speed railway junction.First,on the basis of domestic and foreign research status,the research content and technical route of this article are proposed.Define the concept and equipment of high-speed railway junction,introduce the technical operation of high-speed railway junction and bullet train station,and divide the station passing capacity.Secondly,the theoretical part of transportation capacity of high-speed railway junction is elaborated.The influencing factors of passing capacity of high-speed railway stations and bullet train stations are clarified,and the calculation methods of passing capacity of high-speed railway station,bullet train station and high-speed railway section are introduced,and the advantages and disadvantages of the methods are analyzed.It laid the foundation for the subsequent derivation of the coordination and optimization theory of high-speed railway junction station-line capability.Then,starting from three aspects: station system,line system and synthesis,the definition and calculation method of the coordination degree of transportation capacity were established.On the basis of meeting the matching requirements,a coordinated optimization model for the station-line capacity of the high-speed railway junction based on economic benefits is constructed,and the multi-objective problem is solved.Finally,case analysis.The Chengdu East Railway Station was selected to verify the effectiveness of the coordination and optimization of high-speed railway junction station-line capabilities,and to provide ideas for the transportation capacity optimization scheme of high-speed railway junctions and connecting sections within the junctions.