Research On The Operation Scheme Of High-speed Rail Freight Emus

With the rapid economic development,the living standards of the people have been greatly improved,and the structure of the freight transport market has undergone great changes.In order to reverse the loss of freight transportation business,the Railway Department,relying on the increasingly perfect high-speed railway network,carried out the trial implementation of high-speed railway freight transportation,and high-speed rail express business has now covered all the country’s railway stations,to increase revenue for the railway.By the end of2020,the freight EMU(Electric Multiple Units)will be officially launched,which can make up for the shortages of high-speed railway freight transport capacity,and help high-speed railway play its advantages of speed,safety and punctuality,expand its market share and optimize the structure of railway freight transportation market.In this paper,the operation scheme of freight EMU is taken as the starting point,and mainly completes the following tasks:(1)Background and current situation analysis.This article analyzes the background of the development of high-speed railway freight transportation from the transportation market structure of the and the current situation of the high-speed railway network.Then studies on the feasibility of high-speed railway freight transportation and the necessity of optimizing the train operation schemes from macro-policies and the present high-speed railway transportation business.And summarizes the research status of the organization of high-speed rail freight transportation,the shipping and stop schedule plans at home and abroad and operation schemes,and understands the general situation of the actual development of high-speed rail freight transportation in China and the problems to be solved urgently,laying a foundation for the next step.(2)Market positioning analysis of high-speed rail freight transportation and research on freight special train operation conditions.Analyzing the market positioning of high-speed rail freight transportation,points out the types of suitable freight,and studies the operating conditions of freight EMUs from the aspects of lines,equipment,stations,etc.,and draws a conclusion that it is more suitable to adopt the mixed passenger and freight transportation mode.(3)Studies on shipping and stop schedule plans of freight EMUs.The shipping and stop schedule plans is extracted from the complex optimization problem of the operation schemes,the contents,the definition,and the connotation of the shipping and stop schedule plans are discussed first,and the suitable stopping mode of the freight train is analyzed.Then discusses how to arrange the loading of goods and stopping of EMUs,which can meet the demand of freight transportation to the greatest extent under the condition of limited transportation resources.Research on optimization of operation schemes based on the principle of “the train driving mode according to vehicle flow”.The paper makes clear the definition and contents of the operation plans of freight EMUs,puts forward the combined operation mode of four types of trains,analyzes the influencing factors and formulating principles of the operation plans.According to the model and conclusions in chapter 3,the aim is to maximize the transportation profit and reduce the cross-interference of passenger and cargo business,the optimization problem of train operation schemes is transformed into the problem of route selection and the shipping and stop schedule plan optimization.The model is built and solved for the simplified high-speed railway network,and the results of the example prove the validity of the model,which provides a reference for the future operation of high-speed rail freight trains.