关键词: 单组列车, 技术直达列车, 0-1规划模型

Abstract: Railway freight transportation plays a pivotal role in ensuring the continued stability of the national economy and fighting the impact of the epidemic. For goods with different transportation destinations and origins, it is necessary to effectively organize the origins of goods and improve the transportation efficiency by using the operating capacity of each marshalling station while ensuring low time consumption for the running of marshalling trains. Focusing on the marshalling optimization of single-group freight trains among stations in a straight-line direction, this paper aims to minimize the sum of the hourly consumption of assembled trains at stations and the hourly consumption of remarshalling transit trains along the way. Considering the limitations of the uniqueness of remarshalling strategies for traffic flows, the remarshalling capacity of stations, and the capacity of a shunting line, a multi-objective linear 0-1 programming model is established based on the linear integer programming model of the traditional single train marshalling plan at stations, adding the constraint of no remarshalling passing through the stations along the way. A small-scale example is adopted for solving and analysis to verify the accuracy and practicability of the model, and further improve the efficiency of railway freight transportation.

Key words: single-group train, technical through train, 0-1 programming model