Based On Adams / Rail Design Parameters Of High-speed Passenger Dedicated Line Level Longitudinal Dynamic Analysis

The plane and vertical section design parameters of railway line directly affect the line grade and the running safety and comfortableness. With the increment of the running speed, the dynamic problems of the wheel-rail become more and more evident. For the high-speed railway, the traditional line design methods based on the statics are incapable of accurately revealing the complex dynamic interaction between the wheel and the rail under the condition of high-speed running. Therefore, how to optimize the design of the plane and vertical section parameters from the dynamic perspective is of great importance to improve the running safety and comfortableness of vehicles as well as to reduce the dynamic interaction between the wheel and the rail.In this paper, a complete vehicle-lines system space vibration analysis model based on ADAMS/Rail software is established and validated. By using the established model, the author makes a dynamic simulation analysis of the plane and vertical section design parameters of two passenger lines in China and compares the result with the existing dynamic standards, thus to assess whether the parameters of these two lines meet the requirement of safety and comfortableness.The law of influence exerted by various line parameters on vehicle-line system dynamic response is analyzed in order to obtain the reasonable value of design parameters of some high-speed railways. The author of this paper also makes dynamic analysis about the matching of high-speed railway's space curves, proposes a proper matching principle when the vertical curve and the circular curve overlap and analyzes the issue about the safety and comfortableness of the vertical curve and transition curve overlapping lines under condition of high-speed running by calculation.This paper, taking the high-speed passenger line in China as the study object, focuses on analyzing the law of influence exerted by various high-speed railway design parameters on the dynamic performance of high-speed trains which run at the speed of 350 km/h, with a view to provide some useful references for the design of high-speed railway parameters in China.