Dynamic Analysis of High Speed Railway Traffic Loads on Ballasted Track
This paper reports the studies carried out to develop and calibrate the optimal models for the dynamic analysis of high speed railway traffic loads on ballasted track. In particular, a quarter bogie model for the vehicle , rail-wheel contact with Lagrangian multiplier method , and 2D spatial discretization were selected as the optimal decisions. Furthermore,the 3D model of coupled vehicle -track also has been developed to contrast the results obtained in the 2D model. The calculations were carried out in the time domain and envelopes of relevant results were obtained for several track profiles and speed ranges. Distributed elevation irregularities were generated based on power spectral density (PSD) distributions. The results obtained include the wheel-rail contact forces , dynamic loads transmitted to track structure by railpads. The latter loads are relevant for the purpose of evaluating the performance of the infrastructure.
Khanh NGUYEN Jose Maria GOICOLEA Felipe GALBADON
Department of Mechanics and Structures , School of Civil Engineering ,Technical University of Madrid , Spain
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
620-626
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）