将在建深水导管架圆管简化为悬臂梁，以实际导管架圆管为例，建立有限元模型；分析圆管的固有振动特性，依据规范判定圆管发生了风致涡激振动，并计算振动幅值；在圆管自由端绑定缆风绳，施加涡激力，分析不同绑定参数对振动抑制效果的影响。计算表明，缆风绳对悬臂圆管的风致涡激振动有很好的抑制作用，绑点到管自由端的距离在管总长的20%以内、缆风绳与圆管的夹角接近90°，减振效果更好。
The circular pipe of deep-water jacket under construction is simplified as a cantilever beam, and the finite element model is established by taking the actual circular pipe of jacket as an example. The natural vibration characteristics of the circular pipe are analyzed, the wind-induced vortex induced vibration of the circular pipe is determined according to the code, and the vibration amplitude is calculated. The wind rope is bound at the free end of the circular pipe, and the vortex induced force is applied to analyze the influence of different binding parameters on the vibration suppression effect. The calculation shows that the wind rope has a good inhibitory effect on the wind-induced vortex induced vibration of the cantilever circular pipe. To reduce the vibration, the distance from the binding point to the free end of the pipe should better be less than 20% of the total length of the pipe, and the angle between the cable wind rope and the circular pipe should be close 90 °.
2022,44(4): 87-90 收稿日期：2021-08-18
DOI：10.3404/j.issn.1672-7649.2022.04.018
分类号：U663
作者简介：罗超(1981-)，男，硕士，高级工程师，研究方向为海洋工程新技术研发、大型工程项目管理
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