Optimization And Simulation Research Of High-Speed Railway Train Tracking Interval

By the end of 2015, high-speed rail operating mileage of more than one kilometer, ranking first in the world, accounting for more than 60% of the world’s high-speed rail total mileage. At present, China’s high-speed railway in the actual operation by 5 minutes minimum tracking interval time, greatly limits the high speed railway transport capacity of further play, restrict the railway development, high-speed railway line as a breakthrough, in-depth study of the high speed railway 4 minutes or three minutes tracking facing the technical control of the problem and Research on the realization, it has theoretical and practical significance.Firstly on high-speed railway train tracking interval type and minimal tracking intervals were introduced and calculation, by tracking of various types of interval model and analysis of relevant data, summary of the high-speed railway in our country at the present time, in the 5 minutes tracing the cause and the limiting factors mainly include the following aspects:the EMU Technology conditions, emergency disposal method, line conditions, signal system and train arrival time interval. Hardware equipment and the line of the replacement of the relevant equipment from the economic considerations are not desirable, in order to achieve the train 3 minutes or 4 minutes to track the interval, the train’s arrival time interval optimization.Arrival time interval optimization mainly through two ways:first, to take the train to reduce speed in advance, at the expense of range tracking interval, that is, to reduce the train for a job arrives when the initial braking speed; second, to stop in front of the n block partition the whole distribution optimization algorithm to partition. The calculation results can be used to verify the safety and effectiveness of the optimization model by analyzing the time of arrival interval and the interval time of the optimization. In application, this paper uses cellular automata to simulate the 10 in Beijing Shanghai high speed railway line in July 2015 Shanghai Hongqiao, Nanjing "operation diagram of tracking operations of trains and analysis the simulation results, achieve the time interval is the bottleneck of restricting tracking interval of, again was improved by the optimization model and method for simulation, train group can achieve 3 minutes following operation, optimized simulation results verify the feasibility of the optimization model is verified by.