海上风电大尺度筒型基础分舱优化设计

Optimal Subdivision Design of Large-scaled Bucket Foundation of the Offshore Wind Power Plant

以世界第一台可整体安装的风机结构"CBF-3-150"为对象,通过气浮理论和MOSES软件分析不同分舱形式下大尺度筒型基础的浮稳性参数,认为对大尺度筒型基础进行分舱可以明显提高结构的浮稳性;分舱大小会影响大尺度筒型基础的初稳性高和面积比;在内舱半径相同的条件下,四边形和六边形内舱分舱形式较之于有相同分舱数的圆形内舱分舱更优;对于该大尺度筒型基础结构,建议采用外接圆半径为7.5 m的正六边形分舱形式。

Taking CBF-3-150, the world＇s first structure of wind turbines with overall installation for example, the stability parameters of large-scale bucket foundation with different styles of subdivision are studied by the air-floating theory and analytic software MOSES to get the optimal designs of subdivision. It is shown that the floating stability of large-scale bucket foundation can be significantly improved by the subdivision in the bucket; the scale of the subdivision has an impact on the meta-centric height and area ratio K, and under the condition of the radius is the same, the amplitude of quadrilateral and hexagonal subdivision are greater than that of round subdivision which have the same subdivisions. The proposed style of subdivision of this largescaled bucket foundation is regular hexagon, the circumscribe radius of which is 7.5m.