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根据我国重载铁路车流组织以列为单位调整以及对线路通过能力要求较高等特点,对开行组合重载列车和单元重载列车的重载铁路装车区车流组织优化问题进行研究。建立以组合时间耗费最小化和重载通道流量最大化为目标的重载铁路装车区车流组织优化模型,并引入组合系数的概念,以解决由于列车组合作业造成的列车流输入输出不均衡的问题;为降低多目标优化求解的复杂度,将其转化为网络流模型并验证其解的等价性,并采用最小费用最大流算法对模型进行求解。以大秦铁路为例,研究其装车区车流组织问题,通过对计算结果的分析表明,所给出的模型简单而实用。
According to the adjustment of train units in our country as a unit and the requirement of high capacity of passing lines, the paper studies the optimization of traffic flow in heavy load railway loading area of combined heavy haul train and unit heavy haul train. Aiming at the minimization of the combination time and the maximization of the heavy traffic flow, a vehicle flow optimization model is proposed and the concept of combination coefficient is introduced to solve the imbalance of the input and output of the train flow caused by the train combination operation In order to reduce the complexity of multi-objective optimization solution, it is transformed into the network flow model and the equivalence of the solution is verified. The minimum cost maximum flow algorithm is used to solve the model. Taking Daqin Railway as an example, this paper studies the problem of vehicle flow organization in the loading area. The analysis of the calculation results shows that the proposed model is simple and practical.