Research On Optimized Organization For Multi-Block Train

The formation plan of railway freight train plays a very important role in railway operation management,whether it is reasonable or not directly relates to the operating efficiency of the railway technical station.In terms of the present research situation,the majority of the scholars concentrate their study on the formation plan of a single set of train.Multi-block train is a kind of important form of wagon organization,but we lack more detailed and in-depth discussion.Multi-block train,which contains two and more crews of different destination and conducts at least one time of the change and hanging operation at the technological stations along the way,is a better wagon flow organization form.Under the condition that the wagon group links well with each other at the station,multi-block train can reduce railway operation cost,release railway transportation capacity.At present,domestic scholars study double group train which conducts only one time of the change and hanging operation.Therefore, this paper will focus on the number of multi-block train and the change and hanging operation.The main purpose of this paper is to study the optimization problems of multi-block train.Firstly,I want to introduce the the research background, object and significance,present the research situation of the formation plan of railway freight train both at home and abroad,and point out the problems mainly to be solved and research content.Secondly,I will analyze the characteristics of the multi-block train, including the summary of wagon flow organization and the basic characteristics of multi-block train.Thirdly,I focus on the analysis of the technical benefits to open the single group train into multi-block train that has multiple group number,by using piecewise function to show the following situation of combining each single group train:unfixed weight of the wagon group,fixed weight of the wagon group,coexistence of unfixed weight and fixed weight of the wagon group.Under the above condition,multi-block train saves more wagon hours than single group in a day and night.Then,I will establish a mathematical model of the multi-block train optimization and organization technical benefit the largest number of multiple packet train optimization,the model also takes the technical operation conditions of multi-block train into account.Finally,I design the algorithm process and steps for the mathematical model of the multi-block train optimization and organization,explain the constraint conditions in the algorithm of processing.By programming I carry on the case analysis,and then verify the effectiveness of the model.