新型干树半潜平台整体强度分析

Analysis of the global strength of a new type of dry tree semi-submersible platform

以新型干树半潜平台为研究对象,采用随机性设计波方法对结构水动力响应进行分析,计算波浪载荷和设计波参数,并对平台整体结构强度进行分析,依据规范对结构强度进行校核。结果表明,新型干树半潜平台整体强度和UC值满足相关规范要求。采用随机性设计波方法确定的平台上船体主导载荷为水平剪力垂向加速度工况;上浮箱立柱连接处、下浮箱顶部以及节点侧面区域为高应力区,对该区域应重点关注并进行疲劳强度校核。为新型干树半潜平台结构安全和后续疲劳分析提供理论依据,为平台结构安全提供保障。

Based on the research object of new type of dry tree semi-submersible platform,the random design wave method is used to analyze the structural hydrodynamic response,calculate the wave load and design wave parameters,ana-lyze the overall structural strength of the platform,and check the structural strength according to the specifications.The res-ults show that the overall strength and UC value of the new type of stem tree semi submersible meet the requirements of rel-evant specifications.The dominant load of the hull on the platform determined by the random design wave method is the ho-rizontal shear force and vertical acceleration.The joint of the column of the upper buoyancy tank,the top of the lower buoy-ancy tank and the side of the node are high stress areas,which should be focused on and checked for fatigue strength.It provides a theoretical basis for the structural safety and subsequent fatigue analysis of the new type of stem tree semi sub-mersible platform,and guarantees the structural safety of the platform.