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- Title
基于服务网络的高铁快运基地 选址及规模优化方法.
- Authors
马春山; 廖正文
- Abstract
The gradual formation of China’s “eight vertical and eight horizontal†high-speed railway networks has brought new development foundations and advantages to high-speed rail express transport. The reasonable locations of the high-speed rail express transport bases are of great significance to improve the service level of high-speed rail express transport and increase transport revenue. On the basis of considering the organizational characteristics of high-speed rail express transport, the train operation plan and cargo flow distribution elements related to the location of the high-speed rail express transport through the service network were described. The base facility construction costs and operating costs, the fixed and variable costs of train operation, and the income of high-speed rail express transport were considered under the condition of given cargo flow demand. With the goal of maximizing the income of railway enterprises, the operating capacity of the bases, the balance of train flow, the balance of cargo flow, and the loading capacity of trains were taken as the constraints. An integer programming model for high-speed rail express transport base location and scale optimization based on the service network was built, and a heuristic iterative algorithm framework was proposed to solve the location schemes of high-speed rail express transport bases. Finally, a high-speed rail express transport network in a certain region was taken as an example. Among the 34 nodes, 1 node was selected to build a large-scale base, 3 nodes to build a medium-scale base, 1 node to build a small-scale base, and 3 nodes to rebuild a small-scale base. A train operation plan with 15 trains was given based on the node selection. The plan for the operation of the highspeed rail express train group verified the effectiveness of the location selection and scale optimization method of the high-speed rail express transport base. The influence of freight rate and cargo flow demand on the site selection scheme was discussed and analyzed. The results show that the node selection and scale of the highspeed rail express transport base are affected when the freight rate of HSR express transport fluctuates between 1.8 and 2.4 yuan/(t∙km). Under the condition that the current cargo flow structure remains unchanged when the cargo flow demand reaches 20%, 40%, and 60% of the current one, the construction of small, medium, and largescale high-speed rail express transport bases should be considered respectively. This paper could also provide the theoretical basis for the reasonable determination of the freight rate in practical applications. The gradual formation of China’s “eight vertical and eight horizontal” high-speed railway networks has brought new development foundations and advantages to high-speed rail express transport. The reasonable locations of the high-speed rail express transport bases are of great significance to improve the service level of high-speed rail express transport and increase transport revenue. On the basis of considering the organizational characteristics of high-speed rail express transport, the train operation plan and cargo flow distribution elements related to the location of the high-speed rail express transport through the service network were described. The base facility construction costs and operating costs, the fixed and variable costs of train operation, and the income of high-speed rail express transport were considered under the condition of given cargo flow demand. With the goal of maximizing the income of railway enterprises, the operating capacity of the bases, the balance of train flow, the balance of cargo flow, and the loading capacity of trains were taken as the constraints. An integer programming model for high-speed rail express transport base location and scale optimization based on the service network was built, and a heuristic iterative algorithm framework was proposed to solve the location schemes of high-speed rail express transport bases. Finally, a high-speed rail express transport network in a certain region was taken as an example. Among the 34 nodes, 1 node was selected to build a large-scale base, 3 nodes to build a medium-scale base, 1 node to build a small-scale base, and 3 nodes to rebuild a small-scale base. A train operation plan with 15 trains was given based on the node selection. The plan for the operation of the highspeed rail express train group verified the effectiveness of the location selection and scale optimization method of the high-speed rail express transport base. The influence of freight rate and cargo flow demand on the site selection scheme was discussed and analyzed. The results show that the node selection and scale of the highspeed rail express transport base are affected when the freight rate of HSR express transport fluctuates between 1.8 and 2.4 yuan/(t∙km). Under the condition that the current cargo flow structure remains unchanged when the cargo flow demand reaches 20%, 40%, and 60% of the current one, the construction of small, medium, and largescale high-speed rail express transport bases should be considered respectively. This paper could also provide the theoretical basis for the reasonable determination of the freight rate in practical applications.
- Subjects
CHINA; FREIGHT &; freightage rates; VARIABLE costs; INTEGER programming; HEURISTIC algorithms; CONSTRUCTION costs; JOINT use of railroad facilities; HIGH speed trains
- Publication
Journal of Railway Science & Engineering, 2023, Vol 20, Issue 2, p463
- ISSN
1672-7029
- Publication type
Article
- DOI
10.19713/j.cnki.43-1423/u.T20221977