基于改进SLP理论的铁路电商物流中心布局研究

通过研究电子商务环境下铁路物流中心的作业情况，将铁路电商物流中心划分为收货区、存储区、拣货区、包装区、发货区、退货区、设备区和办公区8个功能区域。对系统布置规划（SLP）进行量化改造，加入数学建模的方法对物流影响因素进行量化分析。按照改进SLP方法对影响铁路电商物流中心的物流因素和非物流因素进行分析，并构建综合关系表。在功能区间不重叠、功能区不能超过规划范围、铁路长宽比有一定范围、不得占用铁路专用线区域、园区出入口等的约束条件下，建立了园区内物料搬运成本最小、功能区间综合关系最大、土地改造成本最小的目标函数，然后对目标函数进行处理得到归一化的单目标函数。通过改进遗传算法进行求解，从而得到科学合理的布局规划方案。实际应用的算例分析表明，本文中布局方法具有科学合理性。

Research on layout of railway e-commerce logistics center based on the improved SLP theory

Based on the operation situation of railway logistics center under electronic commerce environment, the railway electrical business logistics center was divided into 8 function areas: receiving area, storage area, picking, packing, shipping, returns, equipment area and office area. The systematic layout planning (SLP) was reformed quantitatively, the method of mathematical modeling was added, and the factors of logistics influence were analyzed more scientifically. According to the improved SLP method, the logistics factors and non-logistics factors affecting the railway e-commerce logistics center were analyzed, and the comprehensive relational table was constructed. Under the constraints of no overlap of functional zones, no more than the planned scope of functional areas, a certain range of length-width ratios of railways, no occupancy of areas dedicated to railways, entrances and exits of parks, etc., the objective function of minimizing the material handling cost, maximizing interval integrated relationship, and minimizing the cost of land reform in the park was established, and then the objective function was processed to get the normalized single objective function. Through improved genetic algorithm, a scientific and reasonable layout plan was obtained. Finally, a practical example shows that the layout method in this paper is scientific and reasonable.