Study On Calculation Method And System Development Of Railway Junction Carrying Capacity Based On Time-phase

Railway junction terminals are indispensable in railroad lines network, they are main base of the transport production and they are also important link between railway and cities and country economy departments. However, in our country there are many complex and diverse factors influence railway junction terminal carrying capacity, which include junction terminal have many directions and contain many stations and lines, passenger train and freight train run using the same line, different directions use unreasonablely and single locomotive and transfer train operation frequently, so that the carrying capacity calculation becomes complex and changeable. The carrying capacity all day of every device probable adapt to traffic flow of the device undertake, but it still display tension and lack of capacity in different periods, meanwhile the interaction and impact of different devices make the carrying capacity much more complex. Therefore there is very important theoretical and practical significance to research on calculation method and system development of railway junction carrying capacity based on time-phase.At first, the paper introduces the concept of railway junction terminal carrying capacity. Comparing to calculating method of carrying capacity of main device in domestic and international railway hinge, the article introduces detailed calculating method of carrying capacity of main device and the value of parameter when calculating the carrying capacity of junction terminal based on time-phase; on this basis, the paper puts forward calculation principle and method of railway junction terminal carrying capacity based on time-phase, It enumerates the restrictive terms in the calculation, brings forward different kinds of calculating strategy, also designs the wagon flow route table and carrying capacity computation table of the junction terminals, It presents the general algorithm to calculate the junction terminal's transport capacity by the descriptive computer language. According to calculation algorithm design of railway junction terminal carrying capacity based on time-phase, the paper have finished the system design and development work of the carrying capacity of railway junction terminal based on time-phase, set up the system time scale, stopping working time database, equipment database, train route database, link-up direction database, data check-up database, result memory database, and so on which take part in the calculation of junction terminal carrying capacity. At last, the paper takes Zhengzhou railway hinge as an example and introduces detailed the way and steps to calculate the carrying capacity of Zhengzhou railway junction terminal based on time-phase and provides the result of calculation and analyses it briefly.