Intensity Analysis Of Parts Of The Middle Catenary Supporting

With the increasing of the speed of train, high reliability of the contact system is required. The catenary for electric railway is settled directly, and is under the action of pantograph, wind, frost, snow and other loads when working, so the structure size and connection state of the catenary is fluxionary, it is of frequent occurrence that there are some accidents. According to investigate, the catenary for electric railway is no standby now. So safe reliability of catenary is required to be improved because it is weak link of electric railway.In this thesis, the intermediate support spars on straightway is researched, by precise analysing of force on the whole support system, load variations of all the segements under different ambient conditions are obtained. By stress analysis of the steel structures using software of ANSYS, stress distributions of all the segements under different ambient conditions are obtained. Structure reliability of the intermediate support spars are analysed according to the theory of stress intensity distribution interfere. Improvement suggestions for structure of the intermediate support spar system are advanced according to the simulation results, and the ways to improve the structure reliability are studied. At the same time, the basic datas and feasible waies for the FEM analysis of the steel structure of the whole contact system are provided.