Research On The Methods Of Empty Container Distribution In Railway Based On Satisfactory Optimization

Because the resources distribution is not balanced in China, and the other factors influence, for example, local economic development and urban setting, goods distributes of the national container source have very big difference. And the same time, the container flow is not to be balanced in the direction. The empty container adjustment and the adjustment level have the immediate influence on Railroad container's volume and the containerized traffic cost. Therefore, the reasonable empty container shunting has the extremely vital significance. It can improve the shipping quality, and enhance the railroad containerized traffic market share to have the extremely vital significance.The paper focuses on theoretical research, plentifully uses former results for reference, introduces systematic science,analogy and means of mathematic models, and combines theoretic of correlated knowledge, such as discrete math, satisfactory optimization and computation etc. To deeply analyze the optimizing problem of empty container distribution among railway nodes to achieve the purpose of providing a better modeling thought and resolving algorithm.unties the present empty container distribution on the reference, the optimization model which combined the qualitative analysis and the quantitative analysis is constructed for empty reposition, so that the optimization of routing , quantity and time is available. The contents and innovative points of this dissertation include:(1)According to the important position of the empty container distribution and the question of the present empty container shunting model, we can know the purpose and the research significance of the paper selected.(2)The empty container distribution is one of the railway shipping plans. In order to study the shunting model, the paper researches the reason of empty container production, the principle of the empty container distribution and the key question in empty container shunting.(2)The paper outlines the multi-objective optimization method, and gives satisfaction optimization question application category. And the paper studies the solution process of the multi-objective question satisfaction optimization. Regarding the multi-objective satisfaction optimization question, it constructs the degree of satisfaction function from the objective function or the related information, and transforms the original question to a new question about the biggest degree of satisfaction. The paper has given the solution general step.(4)The paper applies satisfactory optimization into empty container distribution. A satisfactory optimization model is established based on railway enterprise benefit, customer preference and rationality of transportation path, which is the integration and in-depth research of several factor such as: uncertainty, substitution of empty wagon type, time efficiency, and rationality of transportation path. The solution algorithm of satisfactory optimization is also presented. The result shows that the satisfactory optimization is more applicable and effective than the general theoretical optimization. It also puts forward a new idea for the problem of empty container distribution.