超大型半潜浮式风力机基础概念设计及性能研究

Conceptual Design and Performance Analysis of the Foundation of a Super Large Semi-Submersible Floating Wind Turbine

半潜浮式风机的基础是保证风机正常运行的关键,而基础各个构件尺寸的设计尤为重要。针对具有大型浮箱结构的半潜型浮式风机基础,拟定三种不同尺寸浮箱的平台,建立了三个有限元模型,进行稳性分析、水动力分析和强度分析,将计算的结果与规范标准进行对比分析,最终确定平台尺寸。计算结果表明:浮箱的尺寸影响平台垂荡和纵摇的固有周期,并且随着尺寸的增大初稳性高度降低,其中浮箱宽度为9 m平台的稳性和水动力性能相对较好,其整体强度分析结果也满足规范要求。

The foundation of a semi-submersible floating plating is the key to ensuring the normal operation of the floating offshore wind turbine,and the design of the dimensions of each component of the plating is particularly important.For a semi-submersible floating platform with large floating tanks structure.Three platforms with different sizes of buoyancy tanks are proposed.To establish three finite element models,stability analysis,hydrodynamic analysis,and strength analysis were conducted to compare and analyze the results with the specifications and standards,and finally determine the platform size.The calculation results show that the size of the buoyancy tank affects the natural periods of heave and pitch of the platform,and the initial stability height decreases as the size increases.The platform with a width of 9 m of the buoyancy tank has relatively good stability and hydrodynamic performance,and its overall strength analysis results also meet the specification requirements.