Dynamicity Analysis And Optimization Of High-Speed Railway Train Tracking Interval

Our country’s high-speed railway has developed rapidly in the past decade.At present,the road network has exceeded 40,000 kilometers.It is expected that by 2025,our country will form an " eight vertical and eight horizontal " high-speed railway network covering the central and western regions.In the future,high-speed railways will play a pivotal role in China’s social and economic development.Therefore,the level of driving organization of high-speed railways will directly affect the quality and efficiency of its role.At present,most scholars have analytical calculations for train tracking intervals based on static research,and have not considered the dynamic changes caused by the mutual influence of trains.This paper mainly studies the speed fluctuation of the train when the train is tracking in the line section,which will affect the following train and the transmission law.and utilizes the dynamic transfer law,optimizing the running time of the train,thereby increasing the passage of the line.First,this paper explains the principle of various types of train tracking intervals.Analyze the principle of the interval changing during operation;and uses one-dimensional cellular automatic machine to establish train tracking operation simulation model,Use simulation to analyze the running process of trains running in the track section with minimum interval time;Analyze the speed limit value and speed limit interval length,which will affect the running of the train’s operation,under limited speed conditions,summarize the changes in dynamic and transmitting,and analyzes the oscillation characteristics of high-speed rail trains.Finally,by optimizing the braking process of the train to reduce the station,the operational optimization strategy based on predictive reduction point is proposed,and the optimization strategy is verified using the simulation.By dynamic analysis of train tracking intervals,it is found that under the condition of limited speed in the interval,the size of the speed limit value has the most significant impact on the dynamics of the interval time of the train group.In addition,the oscillating phenomenon of high-speed rail trains has convergence characteristics and randomness,when the shock converges,the tracking interval is no longer changing.