Research on Simulation for Lateral Vibration and Structures Suitable for High Speed of Railway Bridge

摘要

In order to investigate the reason for the lateral resonance aroused from the simple I-type steel girder, dynamic test and numerical simulation are carried out for the YangLouSi Bridge (L = 32m simple I-type steel girder). The finite element method is employed in establishing the calculation model for the vehicle-track-bridge joint structure system, and MSC/DYTRAN is adopted in the calculation of contact force between wheel and rail and in analyzing the structure system dynamic response. This study makes it clear that, the lateral resonance, around from the simple I-type steel girder while largely utilized C62 freight trains passing through with the speed 70-80 km/h, is in the very nature of things. Moreover, the analysis of dynamic response of composite beam and the running quality of the high-speed electric driven passenger train is carried out and the results indicate that this type of bridge satisfies the service of freight trains running with increased speed and high-speed passenger train. The achievements of the study have positive meaning on constructing high speed railway and rebuilding of the currently serviced bridges of China.