多浮体海上平台水动力响应分析

多浮体海上平台是一个典型的刚柔流耦合多振子系统,本文利用水动力软件AQWA,建立平台的数值仿真计算模型,然后对该平台进行水动力分析.结果表明,浮体响应幅值随连接件刚度变化会出现较大振荡区间现象;在低频和高频阶区域,平台附加阻尼相对较小;在高频区域内,平台幅值响应很小,稳定性良好.本文研究可以为大型海上浮体结构设计提供指导意义.

Hydrodynamic response analysis for modules-offshore platform

Modules-offshore platform is a typical multi-oscillator system with flexible-rigid-fluid coupling. In this pa-per, the hydrodynamic software AQWA is used to establish the numerical simulation model of the platform. Then, Hydro-dynamic analysis of the platform is carried out. The results show that response amplitude of platform appears large oscilla-tion interval with change of the cable stiffness; In the low and high frequency region, the additional damping of the platform is relatively small; Response amplitude of platform is small and has a good stability in the high frequency region. This study could provide guidance for the design of large offshore platform.