关键词: 水中悬浮隧道, 涡激响应, 尾流振子模型, 锚索, 阿基米德桥

Abstract:

The engineering analysis method for vortex-induced transverse vibration of submerged floating tunnel (SFT) tether is presented, based on the modified wake oscillator model. The effects of specific gravity ratio and shear current character on vortex-induced vibration of tether are investigated. The calculated results show that the distribution of lock-in regions and the vortex-induced vibration of tether vary with the specific gravity ratio of SFT. The increase of shear parameter makes the amplitude of vortex-induced vibration decrease. Furthermore, if shear current is replaced by uniform current to calculate the vortex-induced vibration of tether, its response amplitude may be overestimated.

Key words: submerged floating tunnel, vortex-induced vibration, wake oscillator model, tether, Archimedes bridge