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在列车车底数量有限的条件下,利用多商品网络流模型对列车车底的套用问题建立数学优化模型,对车底套用方案进行优化,即把列车运行图转化为网络图,而后根据流守恒、容量限制和维修等约束条件,建立以列车运输能力最大化为目标的整数规划模型。
Under the condition that the number of train bottom is limited, a multi-commodity network flow model is used to establish a mathematical optimization model for the application of the train undercarriage, and the plan of the undercarriage is optimized, that is, the train operation diagram is transformed into a network diagram, , Capacity constraints and maintenance constraints, the establishment of train planning to maximize the capacity of transport as an integer programming model.