Adjustment And Optimization Of Train Operation Plan For Urban Rail Transit

The train operation plan of urban rail transit stipulates the train running density and running time of each line,which is important technical document to guide the work of all departments of urban rail transit system.Train operation plan is always based on passenger flow demand,which includes the formulation of train routing,marshalling number,stop plan and departure logarithm and so on,and finally embodies as train operation diagram.Aiming at the relationship between passenger flow demand and train operation plan of urban rail transit,this paper studies the adjustment and optimization method of train operation plan,in order to meet the demand of passenger flow and improve the transportation efficiency of urban rail network.In the course of the study,based on the characteristics of the demand of urban rail transit passenger flow,the process of passenger flow data processing and the short-term passenger flow prediction method are discussed.The direct and transfer passenger flow demand on the single line and road network level is analyzed.Based on the number of passenger flow and future train operation plan,this paper searched for quantitative basis for adjustment and optimization of train operation plan.Finally,the adjustment principle of train operation plan is discussed,and the adjustment and optimization method of train operation plan is put forward.The specific content and innovation point of this paper are as follows:Firstly,taking the passenger flow data as the research object,this paper analyzes the process and method of handling the data from OD to section passenger flow from the actual situation.BP neural network algorithm is used for predicting the short-term passenger flow,then the popularization of the network is verified based on the Chengdu subway passenger flow data.Secondly,this paper puts forward the capacity assessment method of urban rail transit train operation plan,which is based on the evaluation results of three aspects of railway station,section and line.It judges whether the plan needs to be adjusted and optimized,actualizing the evaluation of capability matching from point to line to network.Thirdly,this paper proposed the evaluation of train operation planning adjustment and optimization mechanism,adopting the mode of adjusting and optimizing after the first evaluation,and make the process of evaluation and the process of adjusting and optimization to form a unified system,implementing the interactive feedback process of coordination of supply and demand of single line and network.Finally,this paper sets minimizing the total cost of the system and maximizing transportefficiency as the goal of the multi-objective optimization model of the train operation plan,which provides a technical basis for the optimization of train operation plan.