以Iwan改进的尾流振子模型为基础，给出了剪切流中水中悬浮隧道锚索横向涡激振动的工程分析方法，分析了悬浮隧道重浮比以及剪切流特性对锚索涡激响应的影响。计算结果表明，悬浮隧道重浮比的改变，使锚索各阶模态的频锁区域分布发生变化，从而改变了结构的涡激振动响应；剪切流陡度参数的增大会使锚索涡激响应的幅值减小，若使用均匀流场代替剪切流场计算悬浮隧道锚索的涡激振动，会过高估计其响应幅值。

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.