The Study On Effect Of Profile Parameter Of High Speed Passenger Railway Dynamic Response

Safety and comfortableness are the basic requirement of high speed railway. Due to the high speed, the design of railway line plane and longitudinal section standard put forwards higher request. Compared with the traditional line research methods, dynamics method can accurately reveal dynamic response and the wheel/rail dynamic interaction between the wheel and the rail under the high-speed running. Therefore, optimizing the design of the Plane and vertical section Parameters from the dynamic perspective and analysis from the Angle of stability of running safety and riding comfort is of great significance.In this paper, vehicles-lines dynamic model which has based on the SIMPACK simulation platform is established and validated. The Model considers the line longitudinal section features and bridge structure features and so on. By using the established model, the law of influence by various plane section parameters on vehicle-lines system dynamic response is analyzed, especially the influence of the core parameters of longitudinal section such as minimum length of grade section, difference between adjacent gradients and minimum radius of vertical curve is analyzed. The influenced caused by Rail Irregularity, Structural Elastic, Alignment change and other factors on vehicle riding comfort is preliminarily analyzed. The research in this paper is expected to provide helpful reference for High-Speed Passenger Railways optimization design of railway longitudinal section parameters.