Transport Capacity Resources Optimizing Allocation Of Passenger Dedicated Line

Since2013, along with the opening of Nanjing-Hangzhou, Hangzhou-Ningbo and Panjin-Yingkou passenger dedicated line one after another, passenger dedicated line operation mileage has increased1,107km and its total mileage reached11,028km in China."Four vertical" railway trunk lines have basically taken shape, the separation of passenger and freight traffic is imperative, this will greatly ease the contradiction between transport capacity and demand. The main busy trunk lines will realize the separation of passenger and freight traffic,"convenient travel and unimpeded logistics" will become a reality. It has important significance for improving railway transport capacity, transport safety, transport efficiency and the service quality of passenger and freight transport.But the overall relative shortage of China railway transport capacity resources is still a serious problem in a very long period of time. While China railway is developing rapidly, it is also an important issue to study a transport capacity resources optimizing allocation mechanism of passenger dedicated line which is advanced, effective and suitable for the separation mode of passenger and freight traffic. This mechanism can greatly improve management effect, the organization level of railway transport, the ability of investment returns, railway profitability and transport service quality, and then finally realize making full use of transport capacity resources of passenger dedicated line.This study relies on Ministry of Railways Project named Research on Model of Railway Transport Corridor Capacity Resources Allocation. Around the theme of passenger dedicated line transport capacity resources optimizing allocation, this dissertation summarizes the research status at home and abroad, and builds the theoretical system of passenger dedicated line transport capacity resources optimizing allocation, adopting some research methods such as optimization theory, neural network method, system modeling, the combination method of qualitative and quantitative analysis, etc. We study transport capacity resources optimizing allocation of passenger dedicated line from the three aspects which are the fixed infrastructure, related resources of transport organization and train operation scheme. The main research contents of this dissertation are as follows: (1)In the study of passenger dedicated line fixed infrastructure optimization, this dissertation focuses on passenger station hierarchical optimization, in which we extract some objective indicators data from passenger stations and then passenger stations are divided into different levels based on the self-organizing neural network SOM (Self-Organizing Map) clustering algorithm and k-means algorithm. Firstly, we roughly classify the passenger station data to get BMU (Best Matching Unit) by using SOM; secondly, we use DBI (Davies Bouldin Index) to determine the clustering number k; finally, we use k-means algorithm to accurately classify BMU to get the levels of passenger stations. In addition, we study passenger dedicated line through capacity and passenger station capacity.(2)In the study of passenger dedicated line related resources of transport organization optimization, we respectively study on ticket pricing optimization, train departure time optimization and travel time optimization. The ticket pricing optimization model is established, taking passenger travel cost minimization and railway enterprise profit maximization as the goals, taking passenger station departure capacity, passenger station arriving capacity, carrying capacity, etc as the constraints. When researching on train departure time optimization, we calculate the departure time to judge whether it is reasonable. On the basis of analyzing the composition of passenger travel time, the passenger travel time cost optimization model is established, taking passenger travel time minimization as the goal, taking stop number, line capacity and train number as the constraints.(3)In the study of passenger dedicated line train operation scheme optimization, based on the previous research results, we focus on its model, algorithm and example. Firstly, taking passenger interests as the center and considering railway transport enterprise benefits, we establish multi-objective bilevel programming model of passenger dedicated line train operation scheme. Secondly, we design the genetic algorithm solving process of passenger dedicated line train operation scheme optimization model. Finally, we conduct the simulation experiment of Beijing-Shanghai passenger dedicated line to get the Beijing-Shanghai passenger dedicated line train operation scheme. After studying some evaluation systems of train operation scheme in the existing literatures, we propose the evaluation system of passenger dedicated line operation scheme which include qualitative index and quantitative index, then we apply it to do a comparison analysis between the experimental train operation scheme of Beijing-Shanghai passenger dedicated line and the actual one.