Study On Simulation Of High-speed And Medium-speed Trains'cooperation On The Same Railway

Computer simulation can be done with computer repeatedly and is characteristicof money saving, none risk and repeatability Therefore, it is an effective and efficienttool for high-speed railway study Using simulation method, the thesis makes researchinto high-speed and medium-speed trains' cooperation on the same line, under thebackground of Beijing-Shanghai high-speed railway.Single-train-running model and multiple-train- cooperation model are described indetail, and relative algorithm is given too. When introducing single-train-runningmodel, longitudinal forces acted on the train are analyzed thoroughly, Which includebasic resistance, additional resistance, braking force, tractive force and etc. Forprogramming convenience, train-running process is divided into several sub-process.Corresponding program flow chart for each sub-process is given.In introduction of multiple-train-cooperation model, interaction between trainsrunning on the same line is studied, emphasizing on distance-control and train-exchange problems, to which corresponding solutions is given.On basis of sound physical models and precedents' work, software for simulationof high-speed and medium-speed trains' cooperation is developed, with the object-orient programming method. The software has friendly user interface and can animatetrain's running process.Several simulation cases are designed and simulated with the software. Theresults are put forward and analyzed.