Optimization Of Railway Container Central Station Layout Based On Hub-and-spoke Network

Under the background of national transportation structure adjustment,railway container transportation has achieved a new round of development.Therefore,the large-scale promotion of containers and the transformation of existing transportation modes have become the core of development in the new era.Container transportation is in a stage of rapid development in China,but due to the timeliness of railway transportation and service level.Under this circumstance,the national railway container transportation network is optimized to form a railway container transportation shaft-spoke type.The network can improve the overall transportation efficiency and service level,thereby enhancing the attractiveness of container transportation.The rational layout of the central station has a huge impact on integrating railway container transportation,reducing overall transportation costs,improving transportation efficiency and service levels.In order to study the layout of China's railway container central station,through the analysis of the existing handling capacity and transportation scale,the evaluation index of the railway container central station is set up,and the relevant data is used for evaluation,and the candidate set of the railway container central station is obtained.Form the basic network of the hub-and-spoke network.For the container transportation network consisting of the central station alternative set,considering the influencing factors of construction cost,transportation cost and time cost in the network after the central station layout,an integer linear programming model for the optimization of the layout of the railway container central station is constructed.Finally,according to the data of railway container transportation in 2017,the layout optimization model of railway container central station is solved,and the layout results of the railway container central station under different schemes are obtained,and the relevant evaluation function is introduced,and the results are compared and optimized.Program.