强台风下导管架平台风载荷数值仿真分析

Numerical simulation of wind load on jacket platform under strong typhoon

针对强台风对海洋平台造成的巨大损伤问题,采用计算流体动力学(CFD)方法,对8种不同风向角工况下的导管架平台周围风场进行了三维数值模拟,得到了流场压力、速度分布图以及平台和各组块所受风载荷变化曲线,并在此基础上对数值模拟结果进行了分析,结果表明基于CFD的数值模拟方法能够较好地预测平台周围的风环境状况,CFD数值仿真是对API规范的进一步补充与完善,其研究成果可为平台设计、平台极限承载分析和平台抗台风工程研究提供参考。

Aiming at the problem that offshore platforms suffer heavy damage in strong typhoon, 3D numerical simulation of wind field around fixed jacket platform in eight different wind directions were analyzed by employing CFD method. Pres- sure of flow field, velocity profile, and wind load changing curve of the platform and each module were obtained; and on this basis, the simulation results were discussed and analyzed. It turned out that the CFD numerical simulation method was able to better predict the wind environmental conditions around the jacked platform and provided further supplement and improvement for the API specification. This study can provide valuable reference for the design, analy- sis of ultimate bearing capacity and anti-typhoon en- gineering of offshore platforms.