波纹管桩的数值分析

Numerical Analysis of Corrugated Pipe Piles

码头下面的桩基础在海洋环境中容易产生涡激振动,长期振动作用导致结构出现永久变形。由于通常在码头工程中常见的桩基础是圆柱管桩,因此本文提出采用一种新型的波纹管桩代替圆柱管桩为了进一步减少桩基础的涡激振动。本文首先发现在一定雷诺数下波纹管桩比圆柱管桩能够减小涡激振动,然后在保证数值模拟精度的条件下对不同波高和不同波数的波纹管桩进行数值分析,以找出最优参数的波纹管桩应用到工程之中。研究结果表明:在一定的雷诺数条件下,最优参数的波纹管桩在同等条件下比圆柱管桩的升力系数和阻力系数要小。即波纹管桩能够代替我们工程中常用的圆柱管桩,这对以后码头桩基础的设计提供了重要的依据,具有重要的工程应用价值。

The pile foundation beneath the wharf is prone to vortex-induced vibration in the marine envi-ronment, and the long-term vibration causes permanent deformation of the structure. Since the common pilefoundation is usually a cylindrical pile in the terminal engineering, this paper proposes a new type of corrugat-ed pipe pile instead of the cylindrical pipe pile in order to further reduce the vortex-induced vibration of thepile foundation. In this paper, it is found that the corrugated pipe piles can reduce the vortex vibration underthe Reynolds number, and then the numerical analysis of the corrugated pipe piles with different wave heightand different wave number is carried out to ensure the best The parameters of the bellows pile are applied tothe project. The results show that under the condition of certain Reynolds number, the optimal parameters ofthe bellows pile under the same conditions than the cylindrical pipe pile lift coefficient and resistance coeffi-cient is smaller.