重力安装式裙板锚承载特性及最优系泊点  

Bearing Capacity and Optimal Mooring Point of Gravity Installed Skirt Anchor

作　　者：赵福臣 张雨蓉 李飒[2] ZHAO Fuchen;ZHANG Yurong;LI Sa(Installation Division,Offshore Oil Engineering Co.,Ltd.,Tianjin 300452,China;Department of Civil Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]海洋石油工程股份有限公司安装分公司,天津300452 [2]天津大学建工学院,天津300072

出　　处：《中国海洋平台》2022年第4期93-98,共6页China offshore Platform

摘　　要：海洋中的地质条件复杂,为解决常用的吸力锚基础无法在高渗透性土壤中进行安装的问题,结合某海域实际地质条件,提出一种重力安装式裙板锚,并采用理论计算和数值模拟方法对该锚固基础的承载力进行计算,对其最优系泊点的位置进行探讨。分析结果显示:增加裙板的高度可有效提高重力安装式裙板锚的承载力,降低其重量,安装比吸力锚更简单快捷;采用现有规范进行计算,得到的承载力的计算结果偏于安全;由于裙板较高,重力安装式裙板锚也存在最优系泊点,在本计算条件下,最优系泊点位于筒形结构的约下1/5处。重力安装式裙板锚可作为海洋工程锚固基础的一种选择。The geological conditions in the ocean are complex.In order to solve the problem that the suction anchor commonly used in ocean engineering can not installed in high permeability soil,combined with the actual geological conditions of certain sea area,a gravity installed skirt anchor is proposed.The bearing capacity of the anchor foundation is calculated by theoretical method and finite element method,and the optimal position of the mooring point is discussed.The analysis results show that:the bearing capacity of the gravity installed skirt anchor is increased with the increase of the skirt height,the weight of the gravity installed skirt anchor is decreased with the increase of the skirt height,the installation of the gravity installed skirt anchor is easier and faster than that of the suction anchor;the bearing capacity obtained by the existing codes are safe;due to the high skirt,there is optimal mooring point on the gravity installed skirt anchor,and the optimal mooring point is located at about 1/5 of the bottom of the cylindrical structure under the calculation conditions.The gravity installed skirt anchor can be used as an alternative for anchorage foundation of offshore engineering.

关 键 词：重力锚 吸力锚 承载力 有限元法 

分 类 号：P75[天文地球—海洋科学]