Research On Optimization Of Transfer Efficiency In Metro Transfer Station Based On Facilities Separation

As subways play an increasingly critical role in solving urban traffic congestion problems,it attracts a large number of passengers to choose this kind of efficient and convenient and on-time high-rate transportation methods to meet their own traffic needs.The transfer station,as an important node in the subway network,is a key location to help transfer passengers to the conversion line.Its quality of service directly reflects the subway line network transportation efficiency and the transfer station design level.The design level of China's subway transfer stations and the service quality of the transfer station have made great progress in recent years,but the passenger transfer efficiency still has room for improvement.the existing research on transfer efficiency is mostly directed to the transfer facility convergence optimization or transfer route optimization,the practicality of the completed transfer station is limited.Therefore,this paper focuses on the transfer efficiency optimization method that is applicable to the completed transfer station.Firstly,based on the definition of efficiency in the operation management project,this paper proposes the definition of passenger transfer efficiency at the subway transfer station.In order to quantify and analyze the transfer efficiency,this paper combines the queuing theory model and the influencing factors of the transfer facility characteristics to give the specific calculation formula of transfer efficiency,and builds a transfer efficiency optimization model for dynamic separation of transfer facilities based on dynamic planning.The MATLAB software is used to implement the transfer efficiency optimization algorithm,and compared with the average transfer time before and after the optimization measures are adopted for the transfer stream line studied,it verifies that the transfer facility separation optimization method proposed in this paper has certain advantages and rationality.It provides an effective transfer efficiency calculation method for the design of subway transfer station,and the proposed transfer efficiency optimization program based on facility separation has great significance for improving the transfer efficiency of existing transfer stations.The main work of the thesis includes the following points:(1)Based on the definition of efficiency in the operation management project,the passenger transfer efficiency in the subway transfer station is defined,and based on the definition of transfer efficiency,the factors affecting the transfer efficiency are analyzed.Among them,the internal factors of the transfer station include the design characteristics of the transfer station,the transfer method,the transfer streamline,and the layout of the transfer facility;the external factors of the transfer station include the structural characteristics of the line network and the departure interval of the train.These factors will have a certain impact on passenger transfer efficiency.(2)Calculation of passenger transfer efficiency requires calculation of passenger transfer time.Because passengers in the subway station transfer process is prone to queuing congestion at the junction of the transfer facilities,this article has different number of desks according to the different transfer facilities within the transfer station,and the arrival of passengers during the peak hours will have a corresponding The queuing behavior,the queuing theory model of multi-service station hybrid system was constructed,and the passenger transfer time in the station streamline was calculated,which facilitated the calculation and study of the transfer efficiency of the subway transfer station.(3)After the transfer time calculation method based on the queuing theory model is proposed,the number of service desks of the transfer facilities will affect the passenger transfer time.Therefore,to increase the transfer efficiency within the transfer station,it is necessary to increase the peak hour passengers.The transfer time is optimized.Considering that many existing transfer stations are not convenient for engineering transfer facilities and streamline reconstruction,this paper establishes a transfer efficiency optimization model and algorithm for dynamic separation of transfer facilities based on dynamic planning,through the transfer facilities.Separation,using a dynamic separation model to find a separation approach that minimizes transfer times and serves as an optimal objective function,saves passengers' actual transfer time and improves the passenger transfer efficiency of existing transfer stations.(4)Calculate the transfer efficiency by taking the transfer streamline of Subway Line 4 to the Xizhimen Subway Line 13 of Beijing Subway as a case study.The MATLAB software is used to achieve the transfer efficiency calculation and the optimization model of transfer efficiency.algorithm.By calculating the separation method of the optimal transfer time for each transfer facility and the average transfer time of passengers when using the optimal separation method,the transfer efficiency of the entire transfer streamline can be optimized.Taking advantage of time,in the early morning peak hours,an average passenger transfer time of nearly 30 seconds can be saved,which is a significant improvement compared to the efficiency of the transfer before the improvement,thus verifying the separation of the facilities to the existing transfer station.The feasibility of efficiency optimization achieves the purpose of this study.