Optimization Of Placing-in And Taking-out Of Non-through Wagon Flow On Branch-shaped Siding Network Based On First Placing-in And Then Taking-out

First of all,railway transportation in China’s main modes of transportation,by virtue of low transport costs,high delivery speed,small weather conditions,and large transport volume and other advantages to assume many of China’s bulk cargo transport tasks.With the development of our country,the volume of cargo transportation has been climbing.Especially in recent years,the state has focused on the implementation of policies such as the Belt and Road,and the new development pattern of domestic and international dual-cycle mutual promotion needs to be supported by international logistics channels,such as the CHINA RAILWAY Express.Therefore,under the new situation,the railway transportation has put forward higher requirements.As an important node of truck train loading and unloading place,the efficiency of railway hub directly affects the efficiency of railway cargo transportation,and it is of great significance to arrange the transportation work of railway hub scientifically and rationally to improve the efficiency of truck turnover and reduce the transportation cost.Based on the above research background,this paper studies the optimization of placing-in and taking-out of non-through wagon flow on branch-shaped siding network based on the first placing-in and then taking-out.Firstly,this paper introduces the research background and research significance of the optimization of placing-in and taking-out of non-through wagon flow on branch-shaped siding network based on the first placing-in and then taking-out,then combs and classifies the relevant literature at home and abroad,and finds the entry point of this paper through the analysis of literature analysis.Then a brief introduction is made to the basic theories involved in the research problem in this paper.Secondly,in view of the delivery operation system of local cargo flow in railway hub,this paper discusses the research problem in detail from the two directions of single-engine operation and multi-engine operation.In view of the problem of non-through wagon flow on the branch-shaped railway siding network for stand-alone operation,combined with the sequence of work take-out after placing-in,a mathematical model of minimizing the cost of stopping at the station and the cost of transferring the machine to be minimized is constructed.In view of the complexity of the model,the HH-IBA&GA fusion solution strategy is calculated.Finally,the experimental scene is designed to verify the method proposed in this paper.In view of the problem of non-through wagon flow on the branch-shaped railway line for multi-engine operation,a mathematical model is constructed with the goal of minimizing the total transportation cost.Because the model is difficult to solve directly,the three-stage fusion solution strategy of designing the collection generation-delivery job sequence collection generation taking-out and placing-in job sequence collection optimization-tuning adaptive distribution,and finally designing the experimental scene to test the comparison and performance evaluation of the algorithm.Finally,the paper summarizes and looks forward to the optimization of the branch-shaped siding network operation system,which is considered for placing-in and taking-out.This paper studies the problems,the models established,the design of the solution strategy and other major contents of the summary.Based on the actual situation,this paper puts forward the insufficient research aspects,and looks forward to such problems,points out the problems to be considered in future research and research direction.