多组合站条件下重载运输战略装车域列流组合方案优化

将重载线路装车端作业区域按其货源供给水平及运输组织方式划分为战略装车点、装车区及装车域3个层次,并根据装车域列流组织的特点,以组合列车总组合时间及走行时间之和最小为目标,考虑线路年运量、通过能力、机车车辆数量等约束,并引入组合映射关系式表示组合站的列流接续关系,构建基于重载运输的装车域列流组织非线性整数规划模型,统筹优化组合站组合作业组织方案。最后以大秦线装车端的装车域为例,验证了模型的有效性和可行性。

Optimization of Train Flow Combination Scheme for Strategic Heavy Haul Loading Domain at Multi-combination Stations

The loading operation terminal of the heavy haul railway line was divided into three levels including the strategic loading point,strategic loading area and strategic loading domain according to sources of goods traffic and transport operation modes.Considering the characteristics of heavy haul train flows operation,the nonlinear integer programming model for train flow organization in the loading domain was established,which took the minized length of the combination time and travel time of the combined heavy haul train as the objective,and the yearly traffic volume,line capacity,and number of locomotives and cars as constraints.At the same time,the combination mapping relational expression was introduced to express train flow succeeding relationship at the combination station,and the combination operation organization scheme was optimized and planned as a whole.Finally,the strategic loading domain of the loading terminal of the Datong-Qinhuangdao Railway Line was taken as an example,and the effectiveness and feasibility of the model were verified.