基于时效约束的多级节点设施运输网络优化研究

Optimization of multi-level node facilities transportation network based on time constraint

区域内多级节点设施运输网络的整体优化不仅可以合理配置运输资源,有效提高规模效益,还可以提升满足时效的运输服务水平,对于运输业运输水平的提升有着十分重要的作用。首先,基于多级节点设施分析构建货物运输网络;其次,通过对运输网络成本以及时效要求的分析,建立具有时效要求的多级节点设施规划模型,在此基础上加入混合节点的优化方案,对模型进行优化调整;最后,通过实例分析对该模型进行评价,验证模型的适用性。结果表明:具有时效约束的多级节点设施运输网络优化模型可以在有效降低运输网络物流成本的基础上,满足运输过程中的时效要求。

The overall optimization of multi-level node facilities transportation network in a region plays an important role in improving the transportation level of the transportation industry.Moreover,it can rationally allocate transportation resources,effectively improve scale efficiency,and improve the level of transportation service that meets the requirements of timeliness.In this study,Firstly cargo transport network was constructed based on node analysis of transport network.Secondly,through the analysis of the transportation network cost and the requirements of timeliness,the multilevel node facility planning model with timeliness requirements was established.On this basis,the optimization scheme of the hybrid node was added to optimize the model.Finally,the applicability of the model was verified by evaluating the model through case analysis.The results show that the proposed model can meet the timeliness requirements in the transportation process on the basis of effectively reducing the transportation network logistics cost.