Study On The Train Routing Plan Of Pearl River Delta Intercity Railway Network

With the continuous development of intercity railway and the continuous improvement of intercity railway network in our country, the existing intercity railway transportation organization methods are no longer suitable for the new network condition. In this situation, exploring the transportation organization methods fitting with intercity railway network will be the research focus of intercity railway system at the present stage, among which working out a reasonable intercity train routing plan is the most important. Therefore, regarding the Pearl River Delta intercity railway network as a research background, the paper will focus on exploring the intercity train routing plan consistent with network features and passenger flow demands.This paper includes several parts shown as follows:(1) Study on the structure and the passenger flow of the Pearl River Delta intercity railway network. Firstly, the paper introduces the economic environment, analyzes the actual economic condition, the development of cities and towns, industrial structure of the Pearl River Delta. Then, the paper analyzes the characteristics of the intercity railway, studies the transfer mode of the intercity railway network, the national railway network and urban railway network. Then, the paper analyzes the characteristics and influences of the intercity passenger flow, predicts the near and forward passenger flow of the Pearl River Delta intercity railway network with the four-step method. Finally, the paper studies and discusses the intercity passenger flow organization modes adapted to the current actual situation of the Pearl River Delta intercity railway network.(2) Study on the network structure and the candidate routing of the Pearl River Delta intercity railway network. Firstly, the paper describes the concept of intercity railway network structure in order to simplify the structure of the Pearl River Delta intercity railway network. Secondly, this paper discusses the allowable maximum nested routing of the near and forward term in the same section based on the theoretical analysis of the multi-branch lines and the nested routing. Then, according to the determination method of the candidate routing, the paper lists the near and forward candidate routing plan of the Pearl River Delta intercity railway network. Moreover, the influence of the section carrying capacity caused by dispatching express vehicles is analyzed in this paper.(3) Study on the optimization of train routing plan of the Pearl River Delta intercity railway network. Firstly, the paper describes the concept and significance of the train routing plan. Then, considering the interests of intercity railway transportation enterprises and passengers, the paper establishes the mixed integer programming model for the train routing plans of intercity railway network on the basis of the candidate train set and solves the model with Lagrangian Relaxation Theory. Finally, based on the initial calculated train routing plans, the paper analyzes and optimizes the train routing plans to meet the actual situation of the Pearl River Delta intercity railway network.