铁道科学与工程学报2025，Vol.22Issue(4)：1554-1565,12.DOI:10.19713/j.cnki.43-1423/u.T20241036
考虑客户属性的城市公铁联运物流选址-路径优化
Locating-Routing optimization of urban road-rail intermodal transportation network with consideration of customer attributes
摘要
Abstract
Under the external integration and internal distribution mode,the urban logistics based on road-rail intermodal transportation can effectively alleviate major issues such as traffic congestion and high energy consumption in large cities,driving the development of China's urban logistics systems towards intelligence,greenness,and efficiency.On such a basis and from a holistic perspective,this study comprehensively considered the key characteristics of logistics network nodes in megacities,including major logistics bases,existing railway freight stations,and last-mile distribution points,to construct a two-phase logistics site selection and route optimization model for urban road-rail intermodal transportation with the objective of minimizing transportation costs.In the first phase,based on the primary attributes of customers and by employing the elbow method,a weighted k-means clustering algorithm was utilized to adjust the impact of customer attributes during site selection and formulate various site allocation schemes.The second phase,grounded in the site selection plans devised in the first phase,examined inter-node connectivity and optimized the coordination of the scheduling of short-haul railway trains and urban freight vehicle routes under time-window constraints.Exact solutions for the optimization models under each site selection scenario were obtained using the CPLEX solver,thereby investigating the mechanisms by which customer attributes affect logistics costs and formulating the most cost-effective logistics plans.Empirical analysis results indicate that customer attributes have a significant influence on the operational efficiency and overall transportation costs of the logistics system,with varying degrees of impact depending on the specific attributes.Consequently,by appropriately managing the weights of customer attributes within the logistics system and devising scientifically efficient transportation strategies,it is feasible to reduce logistics costs effectively by 14%to 25%.This planning methodology and its derived conclusions provide theoretical support for optimizing large city logistics distribution patterns,facilitating the development and construction of urban logistics systems under the"External Integration,Internal Distribution,and Road-Rail intermodal Transportation"mode.关键词
外集内配/公铁联运/城市物流规划/选址分配-路径优化Key words
external collection and internal distribution/road-rail intermodal transportation/urban logistics planning/location-allocation and routing optimization分类
交通工程引用本文复制引用
张宇昂,陈静怡,张肖飞,周姝..考虑客户属性的城市公铁联运物流选址-路径优化[J].铁道科学与工程学报,2025,22(4):1554-1565,12.基金项目
四川省自然科学基金资助项目(24NSFSC0810) （24NSFSC0810）
国家重点研发计划项目(2018YFB1601400) （2018YFB1601400）
