Study On The Parameters Of Catenary In High-Speed Railway Tunnel

Electrified and high-speed is the development tendency of the present world railway transport. In recent years, the construction of Chinese high-speed network is gradually perfect. As is known to everyone, China is a country with amount of mountains, the area of which is more than two third area of territory. Therefore, a lot of tunnels should be constructed inevitably in the progress of high-speed railway construction. The train will be effected by strong aerodynamic when it goes through the high-speed railway tunnel. Pantograph-catenary current collection characteristic will be greatly changed under the affect of air pressure wave. The designing value of catenary parameters is the crucial element which has to do with pantograph-catenary current collection quality. Designing foundation can be laid to improve pantograph-catenary current collection characteristic by analyzing and studying the catenary parameters in tunnel.According with the detailed analysis of catenary suspension forms, the thesis proposes suspension form which applies to the Chinese high-speed tunnel and emulates the rationality of suspension form by utilizing MATLAB software. Then, the thesis studies length of catenary span in the tunnel, establishes catenary static force analysis model with different span by using ANSYS software, analyzes and compares with the rationality of spans at different speed and obtains the rational value of elastic catenary span of high-speed railway tunnel.In view of the indivisibility of pantograph-catenary system, the thesis makes modal analysis and emulating calculate on contact line tension, contact line material, contact line height, pantograph reduction quality, pantograph stiffness and pantograph damping. The thesis gets the catenary and pantograph parameters which apply to Chinese high-speed railway tunnel. Those parameters provides reference basis to realize high quality pantograph-catenary current collection.