THE RESONANT VIBRATION FOR A SIMPLY SUPPORTED GIRDER BRIDGE UNDER HIGH-SPEED TRAINS
✍ Scribed by JIANZHONG LI; MUBIAO SU
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 242 KB
- Volume
- 224
- Category
- Article
- ISSN
- 0022-460X
No coin nor oath required. For personal study only.
✦ Synopsis
The dynamic response of a girder bridge under high-speed trains is studied, with an emphasis on the resonant vibration. Two dynamic models for the vehicle are presented to predict the dynamic response of the girder bridge. In the "rst model, the vehicles are simpli"ed as a series of moving loads. In the second model, the vehicle}bridge interaction system is considered. The results show that the resonance for small and medium-span girder bridges may occur under a high-speed train consisting of a number of vehicles with similar types, and the resonance is caused by the free vibration. The main factors that in#uence the resonant vibration are investigated; the relations of resonance speeds to the parameters of the girder bridge as well as the vehicle are given.