The Influence Of Express Freight Train On The Railway Freight Transit Period

With the continuous development of China's socialist market economy,the freight market has changed a lot.The industrial structure of freight market is constantly adjusting.Small quantities,multi-category,high value-added products transport demand is increasing.In order to meet the market demand for freight and the development of its own,Railway Company has express freight train for railway freight reform.Nowadays railway transportation has so many problems,such as the cumbersome transport contract,the speed of the freight train is slow.Comparing with the express delivery,the railway transportation time has become a weakness of the railway transportation.Guaranteeing the freight transit period has become the key factor of railway to compete for the freight market in order to adapt the social needs and the freight market needs.The express freight train is different from the railway LTL freight.In order to analyze the influence of express freight train on the freight transit period of railway freight,analyzing the influence of express freight train on the marshalling station operation and train operation.The main contents are summarized as follows:(1)By summarizing the literature at home and abroad,it is concluded that foreign scholars focus on aviation and highway in the study of express freight transportation.In the field of railway,most of them study the models and it's solving algorithms.Optimizing the traffic flow assignments in railway network.The research on the study of express freight transportation in China is mainly focused on learning the advanced development experience of foreign developed countries,analyzing the express freight transportation network in China.The research is little of express freight transportation organization pattern,the service network of express freight transportation and the guarantee of the freight transit period of express freight.(2)Analyzing the definition,status and characteristics of the express train transportation organization.Describing the express freight transportation and it's freight transit period.Analyzing the key parts of freight transit period,it is a foreshadowing of analyzing the influence of express freight train on the freight transit period of railway freight.(3)In the previous analysis,the elements of freight transit period are the residence time of freight train and the runtime of freight train.Therefore,in this chapter analyze the influence of express freight train on the runtime of freight train.As the express freight train running speed and train level are higher than the freight train,so it will have effect on the over-taken trains which is freight train by the express freight train.(4)Express freight train has impact on the marshalling station operation process.Firstly,it analyzes the influence of the express freight train on the operation process of the marshalling station,and then analyzes the influence of the operation on the freight train operation.In the consideration ofthe priority of the express train operation and it's time limit in the station,optimizing the car flow of the marshalling station.Through the change of the car flow connection,we can get the changes of the staying time of the freight train cars at the marshalling station.