Study On Optimal Configuration Of Rail Transit Transfer Facilities In High-speed Railway Terminals

With the rapid development of the national "eight vertical and eight horizontal" railway network,the rail transit systems of major cities have also developed rapidly,and new integrated transportation hubs with high-speed railways and urban rails as the main skeleton have emerged rapidly.High-speed railway and urban rail transit form a huge and complex transfer system at the hub station.Researching about the operation of some of the high-speed rail hub stations that have been put into use,there are bottlenecks in the transfer system,the number of transfer equipment is unbalanced,and the layout is unscientific.Problems such as poor passenger experience,low equipment utilization,and waste of investment.It is important to improve the above problems for better meeting passenger transfer needs,saving facility investment costs,and improving the operating efficiency of high-speed rail hub station.Based on the current research status of world wide,the individual micro-traffic characteristics of individual passengers and the macro-traffic characteristics of pedestrian flow in the hub station is analyzed in this paper.Through statistical data analysis,it is concluded that the share rate of urban rail transit to the transfer passenger flow of the hub station is absolutely dominant;Then sort out the organizational structure of the transfer system in the comprehensive passenger transport hub,focusing on the analysis of the coordination relationship between the various service facilities in the transfer subsystem between the railway and the urban rail.Then,treated as an example of this paper,a research about Xi’an North Railway Station is conducted.Analyze the influence of passenger characteristics(for example,passengers’ luggage,age,gender,etc.)on the transit capacity of transfer service facilities based on the research results,and establish a transit capacity model for each service facility;Then,the maximum benefit objective function of the transfer system is established with passenger comfort,economy,and the balance of facility capacity as indicators,and the optimal quantity configuration plan of each service facility is obtained through genetic algorithm tools.Finally,the micro-simulation software Anylogic is used to conduct simulation experiments on the current facility plan and the optimized plan,and compare the effects of service facilities before and after optimization.The optimized plan can reduce the amount of facilities put in,save manpower,and save manpower while ensuring a high level of service.Capital investment to improve the operating efficiency of the transfer system.The purpose of this paper is to study the transportation characteristics of transfer passengers and the coordination of the transfer system,and establish a maximum benefit function model to solve the number of transfer facilities configuration,so as to improve the operation efficiency of the transfer system of the hub station.The research results of this paper can provide a theoretical basis for the layout of the transfer facilities for the same type of hub stations that have been put into operation and need to be improved or are in the program design,and provide a decision-making basis for the management and operators of the hub station,which has good engineering practical significance.