Research On The Optimization Of The Operation Scheme Of Railway Channel Integrated Passenger Train

With the continuous development of China’s railway transportation,the domestic railway line network is becoming increasingly improved.A number of railway channels based on the "eight horizontal and eight verticals" are the main framework have appeared.Most of the different levels of lines are laid in parallel.Some channels set up with ferry lines available to cross-line operations.The reasonable division of labor in the railway channels and line transportation of the line has become a key issue that needs to be considered by the optimization of transportation organizations.Therefore,as a research object,in the issue of research passengers and freight transportation,"people-oriented" as the most basic principle,based on the formulation of passenger train traffic plans as the primary consideration,while meeting the needs of passenger travel Enterprise income.Passengers choose the most suitable ride plan according to their own needs and the train operation plan.Railway operating companies combine the distribution of passenger traffic in one day to formulate passenger trains.Accordingly,it is necessary to develop a demand-oriented,economical and efficient method of optimizing the integrated passenger railroad operation plan of the railroad corridor to satisfy the travel needs of passengers and maximize their travel satisfaction.By analyzing the choice behavior of passenger travel within the railway channel radiation range,the paper has better understanding the passenger travel option preferences,and optimizes the passenger train operation to achieve the purpose of improving the quality of railway transportation services.In terms of model structure,the double-layer planning model that matches the problem of dynamic streaming problems is selected,and uses the inspiration algorithm to complete the solution,and analyze the case.By calculating the results,the accuracy and effectiveness of the optimization method proposed in this article are proved.The specific work is as follows:(1)After summarizing the research status at home and abroad on railway channel division of labor,passenger travel preference and passenger flow allocation method,train operation plan formulation and optimization,this paper comprehensively analyzes these aspects,determines the research question and puts forward the research significance and ideas,and then gathers and sorts out the theoretical basis of railway channel integrated passenger train operation plan formulation.Three aspects of railway passage,train operation scheme content,design principles and influencing factors are explained in detail,and the optimal flow allocation method and double-layer programming model involved in this paper are theoretically analyzed.(2)The article analyzes the travel decision process in the railway passage,and studies the influencing factors that passenger travel preferences from the five aspects: convenience,comfort,economy,safety,and fastness.Based on the quantitative results to obtain the generalized utility function of travelers’ trips,the sharing rate model is constructed.Finally,the questionnaire is conducted by designing the questionnaire,the data processing is analyzed by the data processing,and the passenger travel selection behavior is analyzed,and the model is estimated based on the results of the questionnaire.(3)A dual-layer planning model is built to achieve the solution to the integrated passenger trains of the railway passage.The types of trains running in the channel include three types: full high speed,full-speed and high-speed lines to general speed lines.The upper and lower layers are based on the results of the traffic plan and passenger flow distribution.The results of the passengers’ total abolition of passengers in the channel obtain the results of the distribution of passenger flow.(4)The double-layer planning model established in this article.The decision variables of the lower model are used as the constraints of the upper model.Based on the characteristics of the upper model,the chromosome coding method in the genetic algorithm is designed.The lower layer model is strict convex planning with a unique traffic solution.The Frank-Wolfe algorithm is used to solve it.(5)Based on the problem studied,a case is constructed in this article.The solution results show that,compared with the original train operation scheme,three types of EMU trains,i.e.,high-speed passenger trains in operation,EMU trains with full high-speed operation,and EMU trains operating across existing lines on high-speed lines,increase the matching of passenger demand and transportation capacity and increase the revenue of railroad operating companies.At the same time,the effectiveness of the double-layer planning model established in this article and the feasibility of the design algorithm are verified.