Core Resource Allocation Optimization For Railway Container Terminals Based On Reach Stacker

The construction and operation of China's railway container terminals is still in the initial stage of exploration.It is of great significance to optimize the allocation of facilities and equipment in the operation area to improve the transportation capacity and operational efficiency of the railway container terminals.The main operation area links the container yard and railway handling line,in which main mechanical configuration affects the loading efficiency and container train transportation organization.In this paper,the scheduling optimization problem of the core loading and unloading resources of railway container terminals with reach stacker as the main machinery is studied.According to the characteristics of loading and unloading in the main working area,the concept of allowable operating time is introduced.The work scheduling and quantity configuration of the reach stacker are modeled and analyzed,and the genetic algorithm is used to solve the two models.The main contents and conclusions of this paper are as follows:(1)Analyzed the allocation of resources in railway container terminals.First of all,through the introduction of the general functions,facilities layout,loading and unloading transport equipment and space resources facilities,pointed out the layout differences between reach stacker-based container terminals and the gantry crane-based container terminals.Secondly,the paper introduces the optimization ideas and methods of core resource allocation and utilization,and puts forward the optimization strategy,which provides the theoretical basis for the follow-up study.(2)Aiming at the problem of reach stacker scheduling,a multi-objective programming model is established.The first goal is to minimize the maximum job completion time for the reach stacker,and the second goal is to balance the reach stacker operation.In the process of solving,the weight coefficient method is used to transform the multi-objective programming problem into a relatively simple single objective programming problem,and an improved genetic algorithm is designed to solve it.(3)Aiming at the problem of quantity configuration of reach stacker,the optimization model of quantity configuration is established with the constraint of operating time as the constraint and the minimum operation cost as the objective.The relationship between the quantity allocation model and the scheduling optimization model is designed,and then the optimal solution is obtained.(4)Designed example to verify the validity and practicability of the model and algorithm,drawing the conclusion the model and algorithm can optimize the core resource allocation and utilization of railway container terminals.It provides some reference for the daily production management the configuration of reach stacker-based railway container terminals.Considering the difference of target in different stages of practical job optimization,scheduling optimization model and quantity allocation optimization model were established.The models optimized the core loading and unloading resource scheduling of reach stacker-based railway container terminals,which is conducive to the improvement of the container terminal handling efficiency,reduce operating costs,and provides a theoretical reference for the application of railway container terminals.