Research On Urban Railway Optimization Plan Considering Transfer

The urban rail transit of China is booming at the fastest speed at present.And the train operation plan is a vital link of urban rail transit operations management.Therefore,one important issue for operators to deal with is to reduce waiting time of passengers and cut down the operating cost through optimization and adjustment of the train operation plan.In the background of current states of urban rail transit with different scales,the thesis mainly took Wuxi Metro as an example to pursue research.Specifically,the thesis first studied the train operation plan of small and medium-sized urban rail transit under transfer mode,and then put forward a train operation plan under express/local train mode.The research results are as follows:(1)The thesis analyzed the main content of the train operation plan and passenger flow.In the research of the passenger flow,the thesis studied the distribution characteristics of urban rail transit passenger flow and summarized the regularities of spatial,and temporal distribution of passenger flow of urban rail transit section;Based on which analyzed the significance of passenger flow intensity on railway line scale,vehicle choice,train operation plan and passenger flow organization.Finally,the thesis established a BP neural network model to make short-term predictions,the result of which can be used to formulate the train operation plan.(2)The thesis analyzed the passenger transfer as a way to figure out a train operation plan that could achieve the transfer coordination in a small and medium-scale urban rail transit.Therefore,the thesis first established a logit model,through which the share ratio of urban rail transit under different scales in urban traffic system was analyzed.Then,after comparing the influencing factors of share ratio of small and medium-sized urban rail transit,the best regulation direction of the operation plan could be determined.Analysis of the relationship between passenger flow and express/local train operation plan,the characteristics of the passenger flow change are used as the constraint conditions for the proportion of express/local train operation.Analysis of passengers'willingness to transfer,Determine passenger transfer due to express/local train operation plan.(3)The thesis set up an express/local train operation plan as the objective function,whose purpose was to reduce waiting time of passengers and cut down the operating cost.The train must stop at transfer stations and the first and the last stations,as the travel demands of transfer passengers under express/local train operation plan could be satisfied.Finally,the thesis took the data of Wuxi Metro into the above model so that the new train operation plan was figured out.