Research On Traction Calculation Application In The Design Of High Speed Railway Block Section

In the progress of constructed high speed railway the design of choosing lines and the design of automatic block section are the first and most things. Train traction calculation is the base of automatic block range partition. Laying signal machine,definiting train tracking interval and checking the length of block section to satisfy braking distances, all of these should be based on traction calculation.The main task of the paper is that combining train traction calculation,train movement analysis and the design principle of automatic block section and so on to design block section based on railway lines condition,data of locomotive,data of car and data of marshalling.The main work of the paper is as following:1. Base on train traction calculation theory, the paper analyses the breaking distance algorithms of freight tram, normal passenger train and high-speed passenger trains, and constructs the model of single and multiple particles of train which can solve the exact time and velocity of any interval time.2. Train tracking interval model is founded. The paper calculates section tracking interval and station tracking interval of normal train with four aspects automatic block system. The paper studies tracing interval all above of high-speed passenger trains with quasi-moving block system. And it also offers an example and gets some conclusion from that.3. Aiming at passenger special line which can be run by passenger trains and freight trains, the paper designs block section according to objectives and impact facts of signal system.4. The paper constructs block range partition optimization model using Ant colony algorithm based on considering all the restrict conditions. Of course, the paper simulates the model to reach a high-quality solution.Finally, the paper gives a conclusion of the research work in the paper and prospects further research work in automatic block range partition.