基于成本与时效的铁路空车调配优化模型研究

针对既有的铁路空车调配问题研究缺乏可靠性,且模型多数使用货主满意度的情况,本文提出了一种考虑时效性的空车调配多目标优化方法。通过分析铁路空车调配过程,基于成本与时效性,定义了空车调配过程的可靠性,建立了运输企业成本最小和运输效益最大的多目标优化模型,并计算得到整个过程的可靠性值。最后,应用LINGO编程软件进行了实例计算,与既有研究方法比较的结果表明,该方法的实用性良好。

Research on optimization model of railway empty wagon distributionbased on cost and timeliness

Given that the existing study on railway empty car allocation lacks reliability and most models use owner satisfaction, a new multi objective optimization model involved in timeliness was presented in this paper. By analyzing railway empty wagon and based on the cost and timeliness, the reliability of this process was defined, and a multi objective optimization model with the least cost and the largest benef distribution it was established. Furthermore, the reliability value of the whole process was calculated. Finally, a numerical example was used to demonstrate the effectiveness of this method with LINGO software. Compared with the existing research methods, results show that the method proposed in this paper is practical.