Construction And Simulation Analysis Of Transfer Trip Chain In Multi-mode Rail Transit Hub

With the gradual improvement of high-speed railway network and urban rail transit network,China has built a large number of multi-mode rail transit hubs based on high-speed railway,and there is a tendency to integrate them into the development of trade area.Under this development mode,the transport hubs will attract a large number of passengers,and the transfer trip chains of passengers in the traffic hub will also be more complicated which not only increases the difficulty of passenger flow organization,reduces the service level and transfer efficiency,but also affects the operation management and transport efficiency of high-speed rail network and urban rail network.Therefore,it is necessary to analyze the transfer trip chain of multi-mode rail transit hub.In this paper,pedestrian micro simulation method is used to analyze the problem of trip chain planning and activity decision-making in passenger transfer,and pedestrian transfer simulation system is constructed to analyze the optimization scheme of hub transfer,so as to provide some references for the work decision-making of passenger flow organization and management personnel.The main contents of this paper are as follows.First of all,the meaning and basic functions of the multi-mode rail transit hub are defined,and the passenger transfer mode in the hub is analyzed.Then,the transfer relevance and influencing factors between the high-speed railway and urban rail transit with the highest transfer proportion in the hub are analyzed.In addition,combined with activity theory model and activity-based travel behavior theory,passenger transfer activities are divided into three stages to research: transfer activity planning stage,transfer activity implementation stage,and processing feedback stage.Secondly,this paper puts forward the concept of transfer trip chain,analyzes the target oriented activities and demand driven activities in the transfer trip chain,and constructs the transfer trip chain structure between high-speed railway and urban rail transit.Besides,a time-space network is built on the basis of the constructed transfer trip chain,and a method to adjust the transfer trip chain is proposed.Furthermore,a process of transfer trip chain dynamic planning is designed.Then,the simulation modeling method of pedestrian database based on Anylogic and the simulation modeling method of track database are analyzed.At the same time,this paper analyzes the pedestrian flow model which can realize the micro travelling behavior of pedestrians in the simulation system and proposes simulation model of transfer trip chain dynamic planning.Also,this paper constructs the pedestrian simulation environment model and the train operation simulation environment model,determines the equipment capacity,and provides the basis for building the simulation system.Aiming at the evaluation of transfer service level and transfer efficiency,the dynamic evaluation system of hub transfer system is put forward.Finally,taking Shapingba hub as an example,this paper analyzes its general situation and forecasts its peak passenger flow data in the near future(2020)and the long term(2030).Based on this,this paper constructs the pedestrian transfer behavior simulation logic model and the train operation simulation logic model based on Anylogic,and builds the pedestrian transfer simulation system of Shapingba hub.Then this paper simulates the whole process of pedestrian cross rail transit system transfer in Shapingba hub,finds out the layout of facilities and equipment in the hub and the design of pedestrian flow line,and then puts forward the comprehensive optimization scheme of transfer trip chain.In the further simulation,the problems of insufficient equipment capacity,regional congestion and flow line conflict are obviously improved,which verifies the feasibility of the scheme.