地下物流节点选址的双层规划模型及算法研究

地下物流系统是正在兴起的物流系统,能够缓解大城市日益严重的地面交通压力,提高交通运输的效率,减少环境污染。物流节点是地下物流系统的重要组成部分,主要负责货物的集散和配送等活动。本文阐述了地下物流节点的意义与职能,根据地下物流节点的特点并分析了双层规划模型的优点,在双层规划模型基础上建立了从决策者角度出发的上层规划模型和从客户角度出发的下层规划模型,分析了模型的解法并在实例中用MATLAB中的fmincon函数求解模型并得到了满意的结果,验证了双层规划模型在地下物流节点选址应用中的实用性和科学性,为以后地下物流系统建设中物流节点的选址问题提供了参考依据。

Research on Bi-level Programming Model and Algorithm of Underground Logistics Node Location

Underground logistics system as a rising logistics system can ease the more and more serious traffic pressure on the ground of big city, improve transportation efficiency and reduce the pollution of environment.Logistics node is an important part of underground logistics system and it mainly deals with the gather and distribution of goods and other activities.The significance and functions of underground logistics node are expounded in this paper.The upper layer programming model of the decision maker and the underlying programming model of customer are established based on the bi-level programming model according to the characteristics of underground logistics nodes and the advantages of bi-level programming model.The solution of the model is analyzed and the fmincon function of MATLAB is used to solve the model and satisfactory results are obtained.The bi-level programming model is verified to be useful and scientific in the application of selecting underground logistics node.This paper provides reference basis for the logistics node location problem in the construction of underground logistics system.