半潜式海洋平台整体结构的三维可靠性分析  

THREE-DIMENSIONAL RELIABILITY RESEARCH OF OVER-ALL STRUCTURE FOR SEMI-SUBMERSIBLE OFFSHORE PLATFORMS

作　　者：余建星[1] 胡云昌[1] 李晨[1] 寇雄[1] 郭振邦[1] 王业宏 

机构地区：[1]天津大学

出　　处：《中国造船》1995年第2期41-50,共10页Shipbuilding of China

基　　金：国家自然科学基金

摘　　要：本文将半潜式海洋平合模型化为空间刚架结构系统，导出三维刚架梁元在塑性阶段的修正刚度矩阵和等效节点力，并有效地改进了分枝眼界法，开发出通用于平面和立体结构系统的可靠性分析程序，对平台整体结构进行可靠性估算。通过算例，验证了方法和程序的可靠性和通用性。In this paper, the reduced stiffness matrixes and the equivalent nodal forces of a three-dimensional frame at the plastic stage are deduced and a general programme to analyze the reliability of two- and three-dimensional structures is developed using a three-dimensional frame structural system to model or to idealize the semi-submersible platform.The branch-and-bound method is also improved significantly. Structral system reliability analyses are carried out through a calculated example, which verify the reliability and thegenerality of the proposed method and the programme.

关 键 词：海洋平台 结构系统 三维可靠性分析 

分 类 号：U656.603[交通运输工程—港口、海岸及近海工程] P75[交通运输工程—船舶与海洋工程]