编组站分类线运用是车站调车作业计划的核心内容,根据其存车情况的不同,可分为空股道、单车流股道、混合车流股道(可细分为暂存线和整理线以示区别)三种类型,其中混合车流股道对编组场作业及能力影响最大.在阶段计划给定的条件下,考虑分类线的数量和能力约束,构建编组站分类线运用优化模型.模型目标为最小化整理线的数量和出发列车连挂次数.算例结果表明 :分类线运用除了受其数量和存车能力影响之外,与阶段计划也相互关联和相互影响;暂存线的存在,会导致出发列车总的连挂次数增加,但能在一定程度上缓解分类线能力不足的压力.%The assignment of classification track of a marshaling yard is the core content of the shunting opera-tion plan of a railway station.Depending on the specific situation of rail car storag,classification tracks can be divided into three types,such as empty track,simple bloching track,multi-bloching track,which can be fur-ther divided into temporary storage track and mixed track.The mixed track has the greatest influence over the capacity and operations of the classification yard.With the assumption that the stage plan is given,considering the number of classification tracks and capacity constraints,the optimization model for the operation of classifi-cation tracks was built.The objectives of this model were minimizing the number of mixed tracks and pullbach operations for departure trains.The results of numerical experiment showed that classification tracks,subject to the number and capacity,are interrelated and interacted with the stage plan.The temporary storage track may increase the number of pullbach operations,while this type of track can help relieve the pressure from ca-pacity shortage of classification tracks.
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