Dynamic response of a long span suspension bridge and running safety of a train under wind action |
| |
Authors: | Guo Weiwei Xia He and Xu You-lin |
| |
Affiliation: | (1) School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing, 100044, China;(2) Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China |
| |
Abstract: | A dynamic analysis model of a wind-train-bridge system is established. The wind excitations of the system are the buffeting
and self-excited forces simulated in time domain using measured aerodynamic coefficients and flutter derivatives. The proposed
formulations are then applied to a long rail-cum-road suspension bridge. The dynamic responses of the bridge and the train
under wind action are analyzed. The results show that the lateral and rotational displacements of the bridge are dominated
by wind, while the vertical by the gravity loading of the moving train. The running safeties of the train vehicles are much
affected by wind. Under wind conditions of 30–40 m/s, the offload factors, derail factors and overturn factors of the train
vehicles exceed the safety allowances, to which great attention should be paid.
Translated from Engineering Mechanics, 2006, 23(2): 103–110 译自: 工程力学] |
| |
Keywords: | suspension bridge train wind dynamic response running safety |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|