大直径圆筒结构上波浪力的数值模拟与实验研究

Numerical Simulation and Experimental Study of Wave Forceon Large Diameter Cylindrical Structure

以线性波浪绕射理论为基础,通过有限元—无限元耦合求解,数值模拟了海上大型建筑物——大直径圆筒结构上的波浪荷载,该模型适用于任意截面的柱体,并开发了相应的软件。对处于不同位置的大直径圆筒在不同工况下的波压强分布及波浪力进行了系统的模型实验研究。基于回归分析,考虑淹没、越浪、波陡、相对水深和相对筒径等的影响,给出了作用在大圆筒上的波浪力和波浪力矩的计算公式,可用于工程实践。

By means of FEMIEM , the paper makes available a numerical model of calculating the wave forces on a largesize structure-the large diameter cylindrical structure, based on the diffraction theory of linear wave. In addition, the numerical model is applicable for computing wave forces on cylinders of arbitrary sections. The distribution of pressure and force on the large diameter cylindrical structure under different wave conditions is measured through physical modeling. On the basis of regression analysis, the relationship between wave parameters and wave force as well as moment acting on the large diameter cylinder structure is given.