基于共同配送策略的公路货运网络优化问题

为取得公路货运网络的规模经济,提出采用共同配送模式来优化公路货运网络。针对已有运输网络设计模型中对运费函数和路径选择分析的不足,提出包含分段费用函数和最短运输路径选择的公路货运枢纽网络设计模型。通过实例计算,采用共同配送模式的公路货运网络中的货物周转量比采用传统的点-点网络模式中的货物周转量增加38.07%;而前者的干线公路运输费用却比后者下降了26.48%。结果表明,采用共同配送模式有利于实现公路货运网络的规模经济,文中提出的运输网络设计模型能较好用于公路货运网络优化中。

Freight Transport Network Optimization Based on Cooperative Distribution

For acquiring scale economies of public road freight transport network,road freight transport network optimization with operational strategy based on cooperative distribution was put forward.New freight network planning formulation including subsection transport cost function and shortest path choice were presented to remedy deficiencies of the original model.In practical example,road freight turnover with cooperative distribution strategy of freight transport network is 38.07% more than that of point to point network,but road transport cost of the former is 26.48% less than that of the latter.The results indicate that road freight transport operational network with cooperative distribution strategy can acquire scale economies,and new transport network planning model adapt to freight transport network optimization.