Optimization and Simulation Research on the High-Speed Rail Train Tracking Interval

The tracking interval between HSR trains is the key factors affecting the capacity utilization of HSR. The paper proposes the calculation method of the tracking interval and analyzes some factors influencing the tracking interval. Based on this, some effective ways to reduce the tracking interval are proposed, including train speed control, CTC system optimization, train platform scheme optimization, and line design transformation. Then a train tracking operation simulation model is established by means of the Anylogic software, in order to minimize the arrival tracking interval of trains under the condition of sectional route release. Besides, the simulation process is designed to get the minimum train arrival interval time under different arrival-departure track application plans. Thus the influence of arrival-departure track application plans on the minimum arrival tracking interval can be got. Finally Shanghai Hongqiao Station is taken as an example to demonstrate the efficiency of the proposed simulation train operation model. The simulation results show that the minimum train arrival interval varies with the arrival-departure track application plan and the best arrival-departure track application plan for trains at Hongqiao Station is get, and in this condition the train arrival interval can reduced by 30 seconds.