对港口集疏运系统进行物理描述,定义节点、路段和网络,并运用节点扩展的方法对转运枢纽进行描述与定义,建立以系统最优为目标,基于广义费用的多货种、多方式的港口集疏运网络综合平衡优化模型,并对该模型进行评价.
The physical description of the collection and distribution system for the ports is presented, the nodes, links and networks are defined, and the transhipment junction is also defined and described by method of extending the nodes. Then the multi-goods multi-modes comprehensive equilibrium optimal model of the ports collection and distribution network is established, which is aimed at the system optimization and based on the generalized cost.