Study On The Optimization Of Passenger Transfer Efficiency In The Peak Period Of Urban Rail Transit Transfer Station

With the construction and development of urban rail transit in China,the proportion of transfer stations in the rail transit network of major cities is increasing,and the network characteristics of the distribution of passenger flow volumes' origins and destinations are becoming more and more obvious.With the increasing of passenger flow volumes,the proportion of transfering passengers at some transfer stations has exceeded 50% during peak hours.Transfering passengers has become an increasingly important part of urban rail transit passengers' part.The peak hour of urban rail transit station is the period with the greatest passengers organization and pressure in one day.Therefore,the study on the optimization of passenger transfer efficiency in the peak hour of urban rail transit transfer station has great positive significance to its operation management and the improvement of passengers transfer efficiency in the overall line network.Firstly,the types of different transfer stations and the characteristics of transfer modes and the influencing factors of passengers transfer efficiency are analyzed.The transfer behavior of passengers is divided into the transfer walking process and the waiting process.The transfer line in a certain direction is the result of the comprehensive influence of the line connection forms,type of the platform and transfer mode of the station.The direct related part is only the platform,stairs,escalators,corridors and other specific station facilities.Therefore,the basic attributes of platform distribution,escalator,staircase and corridor facilities are analyzed and practical investigation are carried out respectively,and the characteristics of passing time and frequency distribution of unit length of passengers in different facilities are analyzed.The normality of passengers travel time at different facilities is verified by KS test.The calculation model of passenger transfer travel time is established by the type and characteristics parameter of any transfer line,and the normality of the overall distribution of passengers transfer travel time is verified.Based on the relationship between train capacity and cross-section passenger flow volume,this paper introduces the calculation of train full load rate,and establishes the calculation model of the actual transport capacity of the train at a transfer station.Through the possible situation of train connection,the different transfer and connection results in a single cycle are enumerated,and the average transfer waiting time model of passengers in a single cycle under different transfer and connection results is constructed.Finally,taking the direction of Fangzhicehgn of Line1 transfer to Weiqunan of Line 2 in Xi'an Beidajie Station as an example,the passenger travel time of this line is analyzed.Combined with the average transfer volume in this direction on normal working days and the full load rate of the train on Line 2,the optimal time difference between the arrival of the train on Line 1 and Line 2 is determined by Genetic Algorithm.The average waiting time of transfering passengers in a single cycle during the late peak period is reduced by 25.13% through the train timetable calculation,which verifies the feasibility of the optimization idea.