Research On Reasonable Station Spacing And Express-local Train Operation Plan Of Suburban Railway Based On The Reconstruction Of Existing Line

With the change of urban economic structure and the expansion of urban scale,a part of the existing railway line is surrounded on the edge of the city,resulting in a waste of resources of the existing line.With the gradual transformation of the city into a multi-center structure,the emergence of satellite cities and groups,the travel demand of suburban passenger traffic further increases.It is a very good way to develop suburban railroads with existing railways for activating the railway assets,facilitating the passenger flow in suburban areas to a greater degree,and saving the cost and cycle of suburban railway construction.Based on this,this paper starts with the analyzing of the necessity and feasibility of developing suburban railway by using existing lines,analyzes the status quo and characteristics of suburban railways in some cities around the world.After that,researching on the reasonable spacing of suburban railway station and the operation plan of express-local train base on the suburban railway reconstructed with existing line by model building and analyzing.In studying the suburb railway reasonable station spacing,analyzing the factors that affect the distance between suburban railway stations at first,then building the model base on the train operation strategy and passengers' travel time,to calculate the reasonable range of station spacing at different maximum train speeds.The result is that when the running speed of the train is between 100km/h and 160km/h,the distances between the stations are all within 1.5?6.7km.In researching on the operation plan of express-local train of suburban railway,the article based on the premise that the existing railway line is completely transformed into the suburban railway and the line only runs the suburban train.Then studding the stopping plan of the operation plan of express-local train with the same maximum speed,and the method of marking train diagram.Specifically includes the following.(1)Discussing the significance of the operation plan of express-local train.It can be concluded that the combined operation of express-local train can be divided into 3 types which are express train and local train has the same maximum speed,the express train and local train has the different maximum speed,express train and local train running on their own line.And determine that the research type of this paper is the express train and local train has the same maximum speed.(2)Analyzing the characteristics of passenger flow,which is suitable for the combination the operation plan of express-local train,which is,the unbalanced distribution of passenger flow,the big number of long-distance passenger.(3)Building the express-local train stopping model to optimize the travel time of all passengers and save the express-passengers' travel time.(4)Based on the consequence of express-local train stopping plan,for the goal of the shortest total travel time of all passengers,making the best train diagram by building NP model.Finally,using the above models in an actual case to find the best stopping plan and train diagram for the goal of the shortest travel time of all passengers.