铁路网配流优化模型

在分析已有配流模型的基础上,考虑车流改编作业,对已有模型进行了修正,以正确选择车流径路.设置3组0-1变量,建立了适合我国铁路运营实际的铁路网配流模型,目标函数为车流在技术站和线路上的总费用最小.模型考虑了OD流无法完全分配的情形,克服了已有模型未考虑车流改编作业导致车流径路选择不准确的缺陷,从而获得更贴近实际的配流结果及车流改编方案.

Optimization Model for Assignment of Wagon Flows in Railway Network

The current mathematical models for wagon flow routing were amended based on analyzing their limitations and considering the wagon flow reorganization so as to choose the route of wagon flows correctly.Three groups of 0-1 variables were set,and models for choosing the route of wagon flows were proposed on the basis of the concrete practice of Chinese railway to minimize the total cost of wagon flows spent on technical stations and running on railway lines.In the proposed model,the situation that the OD(origin-destination) wagon flow can not be fully assigned is considered,and the defect of ignoring the wagon flow reorganization is overcome to avoid inaccurately choosing the route of wagon flows.As a result,the wagon flow assignment and reorganization corresponding to Chinese reality can be got.