CALCULATION AND EVALUATION OF STATION CAPACITY FOR HIGH SPEED RAILWAY

摘要

Considering the dynamics of train operation based on the research by Jiamin Zhang(2011), this invention 'Calculation and Evaluation of Station Capacity for High Speed Railway' dedicated by Ph.D Jiamin Zhang constructs the high speed railway trains at station 'train service - demand intention' (t@s— TSDIS) set and regards the time needed to complete the set t@s— TSDIS as the new criteria to measure the station capacity of the high speed railway. This invention proposes the global— local bilevel model system & optimizing flow to calculate & evaluate the station capacity which optimizes the trains' occupation order on global level and checks the feasibility of the order on local level. On global level this invention proposes the flow chart for optimization of trains occupation order of station tracks (Fig. 8) and Max-plus calculation eigenvalue & eigenvector for each train occupation of track (Fig. 9) using the Fuzzy Time High Level Petri nets (FTHNs), the Max Plus algebra, the simulated annealing algorithm and Scilab ((Claude Gomez, etc), 1999) software to determine the trains' occupation order of the station tracks, where station is abstracted as topology of main nodes presuming that trains can pass each node unlimitedly targeting at minimization of time needed to complete the task list t@s— TSDIS. On local level this invention constructs the Resource Tree Conflict Graph (RTCG) and proposes algorithm 1 & algorithm2 to check the conflicts and optimize the train routes by the interactive feedback between global level and local level where the composition of the switches and lines of each subregion is considered in details. This invention illustrates its practical application on certain high speed railway station BJSS. This invention can calculate and evaluate the capacity not only of the station but also of the more complex railway junction.