Impact Analysis Of High Speed Railway Receiving-Departure Track And Throat Configuration On Carrying Capacity

China's high-speed railway is in a period of rapid development.As the scale of the road network is further expanded,the contradiction between supply and demand of major highspeed railway lines in our country has become increasingly prominent.The capacity is gradually becoming saturated.As a point of the road network system,the station has great influence on the overall capacity of the road network.Therefore,it is of great importance to analyze the influencing mechanism of the high-speed railway station capacity.In many influential factors of the station's passing capacity,the station equipment reconstruction is difficult and high cost,therefore,this article will mainly analyze the impact on the carring capacity of high-speed railway stations from the perspective of station equipment,focusing on the impact of receiving-departure line and throat configurations on station carring capacity.This paper analyzes the impact of high-speed rail receiving-departure line and throat configuration on the carring capacity by using the theory of railway transportation organization theory,optimization theory,analytic hierarchy process,system simulation theory and computer technology and other related methods.Mainly include the following:1.Summarize all the influencing factors of high-speed railway station's capacity and divide it into three types operating plan,operating parameters and rules,station equipment configuration of staion.A detailed qualitative analysis of the factors of equipment configuration is made,and the influence of station type,receiving-departure line and throat configuration,signal and dispatching command equipment on the capacity is discussed.2.Taking the large-scale high-speed railway passenger station as an example,based on the train operation process,the calculation method of train operation time and tracking interval time is proposed.The multi-objective decision hierarchical model of station receivingdeparture line and the arrangement model of throat route are established,the realization algorithm of the whole selection of station operation route is designed.3.The simulation method is proposed to construct the simulation model of high speed railway station operation,the entity and attribute,process and event activity in the model are described,and detailed simulation flowchart is drawn.The length estimation model and calculation formula of the throat length attribute are given.4.The experiment of single variable and multivariable simulation is carried out.Univariate experiments are designed to quantify the impact of single factors on station carrying capacity.Multivariate experiments are based on the relationship between different factors,and discuss the effect of the two functions on capacity.This paper analyzes the effect of single factor and multifactor interaction on the capacity of station through qualitative and quantitative analysis.In order to provide reference for the planning,construction and transformation of high speed railway station in the future.