Research And Simulation Optimization On The Transfer Between Suburban Railway And Urban Rail Transit Within The Same Platform

With the vigorous development of the rail transit in China in recent years and the planning and design of the suburban traffic circle,the suburban railway has flourished.The suburban railway and urban rail transit are important ways for commuters within and around city,therefore the transfer between the two sites matters all passengers'travelling.Among all the forms of transfer,transferring within the same platform gained wide attention because of its unique advantages.Therefore,this paper focused on the transfer between suburban railway and urban rail transit which is within the same platform.First of all,the author clarified the concept and function of suburban railway and urban rail transit,and made a contrast of them from various aspects.The basic theory of the transfer between the two stations is discussed.Besides the research objects,the basic transfer layout within the same platform are clarified.Secondly,this paper analyzes the potential problem of the ticket system for the transfer within the same platform,providing the solution to the problem of the short-and-long-term ticket system.Based on the facilities and equipment capacity of' the same platform transfer,the author analysed the connection and matching of the suburban railway and the urban rail transit on the ground of the capacity and the opening interval,and got the method of determining the train departure intervals under different transfer conditions.Thirdly,the author built a transfer index model and passenger transfer time minimum model based on reasonable train connection as roles of transportation system and passengers.Fourthly,taking Xipu railway station in Chengdu as an example,based on the data from field investigation and reference,the Anylogic simulation software is used to establish the simulation model of the transfer within the same platform at Xipu railway station.The two platforms with different transfer directions are simulated,and the bottleneck of the proposed transfer system is obtained,and then the equipment and the flow line in the station are optimized and improved.After the improvement,the pedestrians congestion,queuing and cross in key areas have been relived obviously.Finally,the main parameters of the two platforms before and after optimization are compared and analyzed,and the comprehensive evaluation of transfer within the same platform in Xipu railway station is carried out according to various indexes.The minimum value of passenger transfer time and the corresponding train connection interval are obtained,which provides a kind of optimization idea for the rational continuation of the train.After that,the design of transfer streamline organization scheme within same platform is designed,which is for intermediate stations under the unform ticket system of long-term,with certain universality.