Research On The Train Operation Plan Of The Combination Of Large And Small Crossroads And Express And Slow Trains Based On Passenger Flow Distribution

In order to meet the needs of my country’s urban expansion,the length of urban rail transit lines is increasing day by day.However,with the continuous extension of the line,the uneven distribution of passenger flow on the line has become increasingly prominent.Although the operation organization of the existing single-route,station-stop train operation plan is relatively simple,for long-distance lines with uneven passenger flow distribution,the single-train operation plan not only causes a certain amount of waste of capacity,but also lengthens the time of passengers in transit.Therefore,it is necessary to optimize the train operation plan according to the passenger flow distribution.This paper proposes a train optimization scheme based on the time-space distribution of passenger flow,combining large and small routes and express and slow trains,hoping to explore an effective path for future urban rail transit operations.First,analyze the passenger flow distribution characteristics of urban rail transit lines from two aspects of time and space,and judge the train operation plan corresponding to different passenger flow characteristics;then analyze the applicability of large and small roads from three aspects of passenger flow,line and driving conditions.It analyzes the applicability of the fast and slow train scheme from two aspects of line and passenger flow,and analyzes the main factors that affect the train stop scheme.Secondly,considering the characteristics of the time and space distribution of the passenger flow of the route,starting from the perspectives of passengers and enterprises,with the minimum total travel time of passengers and the lowest operating cost of the enterprise as the optimization goals,construct a large and small traffic optimization model;On the basis of solving large and small roads,taking the maximum total travel time saved by passengers and the maximum operating cost saved by enterprises as the optimization goals,construct an optimization model for express and slow train schemes based on large roads;And respectively designed genetic algorithm and Monte Carlo stochastic simulation method to solve the model.Finally,taking Chongqing Rail Transit Line 6 as an example,the feasibility of the model was verified,and the following main conclusions were obtained: When the line passenger flow is unevenly distributed,and long-distance travel passengers account for a large proportion of the total travel passengers,implementing a train operation plan that combines large and small roads with fast and slow trains can reduce the total travel time of passengers while reducing enterprise operating costs.Based on the distribution characteristics of urban rail transit passenger flow,this paper constructs a model of the combined train operation plan of large and small roads and express and slow trains,and designs a genetic algorithm and Monte Carlo simulation method to solve the problem.The train operation plan solves the uneven distribution of passenger flow on the line during peak hours and the fast and direct demand of long-distance travel passengers,and provides theoretical support for optimizing the urban rail transit operation plan.