Study On Analyzing Configuration And Coordination Capacity Of Marshalling Station

The marshalling station is the key railway node. By resorting vehicle flows of each direction, it unblocks railway hub and services economy construction. So the capacity and the transportation organization of which makes the important effects on transportation network.After reform and opening-up of our country, the railway have been facing the challenge, which is building special railway line for passengers and having the impact on the principle of drawing balanced System of train running diagram. Owning to passenger and freight mixed railway and the sixth speed-increase, it made the system of Arrive and Departure unbalanced. The balanced stage plan of transportation makes great effects on using fixtures,vehicle flows joining and the mid time target, it needs to analyze capacity of marshalling station with vehicle flows and coordinate the system capacity and transportation organization to solve above problems.This paper analyses environments and functions of the marshalling station system by using system method, introduces the traditional method which separates the marshalling station system into subsystems by vehicle operation process, and putts forward a new thought to separate the marshalling station system into subsystems by the function of marshalling station, one is the arrive and departure subsystem and the other is resorting operation subsystem. By analyzing the unbalanced vehicle flows of marshalling station, the vehicle flows are separated into the dense,the normal and the sparse on the basis of the intensity of input flows; then this paper thinks the marshalling station capacity is not immovable and changing with the vehicle flows. By combing the analytical calculations of capacity with analyzing the nonproductive time, such as the immovable time,the waiting time for breaking up,the waiting time for departure and so on. Basing on the fundamental of system coordination and fuzzy mathematics, this paper expatiates the coordination of marshalling station system and sets up membership function for marshalling station system. The paper expounds the unbalanced transportation method of marshalling station from three levels which are marshalling station system environment,monomial operation capacity and whole capacity of marshalling station. At last, it makes an example of chongqing west station to analyze vehicle flows and give the measures for capacity coordination.