西南地区面向东南亚国际贸易的物流通道选择

伴随中越班列常态化开行,我国西南地区内陆城市与东南亚之间的物流通道选择方案增加,货运企业稳定快速的物流服务有利于制造企业生产计划的顺利执行。因此,为比较现有物流通道方案的优劣情况,提高物流通道方案选择的科学性与合理性,以最小化货运时间和费用为优化目标,考虑国际运输中班列(船)开行和订单总时间的软时间窗要求,构建多目标混合整数规划模型,将高附加值货物作为研究对象,求解进口通道的选择方案。以重庆天然橡胶进口路线为例,基于改进的Dijkstra算法求解其最短路径,并计算各个方案所用的总时间和费用。结果表明,模型求解结果可以为货运企业在西南地区内陆城市国际物流通道的决策提供参考依据,并为西部陆海新通道的建设提供科学建议。

International trade logistic channeloptions between Southeast Asia and Southwest China

As the China-Vietnam express functions regularly, the options of logistic channels between inland cities in Southwest China and Southeast Asia are increasing. Stable logistic services provided by freight companies are conducive to the smooth implementation of production plans of manufacturing companies. Herein, the goal is to make a more scientific and reasonable choice by comparing existing logistic channel schemes. To achieve this, we consider minimizing the freight time and cost as the optimization objective, include the soft time window requirement for the total time of the liner (ship) departure and order in international transportation, construct a mixed multi-objective integer programming model, select high value-added cargos as the research object, solve the selection scheme of import channels. Moreover, we choose Chongqing natural rubber import route as a case, achieve the shortest route for the transportation of goods based on the improved Dijkstra's algorithm, determine the total time and cost associated with each scenario. Our calculation results show that the findings obtained using the proposed model can provide a reference for freight enterprises for decision-making on international logistic channels in inland cities of Southwest China, thus providing scientific suggestions for the construction of new land and sea channels in the west.