废弃导管架沉降过程动力学分析  

Dynamic Analysis of Settlement Process of Abandoned Jacket

作　　者：徐龙达 王雨涵 王鑫 刘震 董妍 周志鹏 赵林[2,3] 王海波 常宗瑜 Xu Longda;Wang Yuhan;Wang Xin;Liu Zhen;Dong Yan;Zhou Zhipeng;Zhao Lin;Wang Haibo;Chang Zongyu(CNOOC Shenzhen Ocean Engineering Technology Service Co.,Ltd.,Tianjin 300457,China;College of Engineering,Ocean University of China,Qingdao,Shandong 266100,China;Shandong Provincial Key Laboratory of Marine Engineering,Qingdao,Shandong 266100,China)

机构地区：[1]中海油深圳海洋工程技术服务有限公司,天津300457 [2]中国海洋大学工程学院,山东青岛266100 [3]山东省海洋工程重点实验室,山东青岛266100

出　　处：《机电工程技术》2025年第1期179-183,共5页Mechanical & Electrical Engineering Technology

摘　　要：针对当前海上石油平台退役后处置的问题,将废弃导管架再利用为人工鱼礁成为了最具可行性的方案之一。为避免切除后的导管架在沉降时产生结构破坏,对其布放后的动力学进行了分析。基于莫里森方程推导了水动力学模型,建立导管架与海床平面的接触模型及碰撞模型,对导管架沉降过程进行了动力学研究。同时,利用动力学软件ADAMS模拟了导管架在3种不同初始倾角下的沉降过程,采用有限元分析系统ANSYS Workbench对着底后的导管架进行强度分析。结果表明,随着导管架的投放倾角的增大,沉降的稳定速度减小;底棱触底时冲击力较小但应力更大,约为15 MPa,尤其在中部区域较为明显。研究可为合理规划导管架的布放和设计提供参考,也为优化导管架的布放过程提供理论支撑。In view of the problem of disposal after decommissioning of offshore oil platforms,the reuse of abandoned jacket into artificial reef has become one of the most feasible solutions.To prevent structural damage during the settlement of the cut-off jacket structures,a hydrodynamic model is deduced based on the Morrison equation.Contact and collision models between the jacket structure and the seabed plane are established,and a dynamic study on the settlement process of the cut-off jacket structures is conducted.Meanwhile,the settlement process of the jacket structure under three different initial inclination angles is simulated using the dynamic software ADAMS,and strength analysis of the landed jacket structure is performed using the finite element analysis system ANSYS Workbench.The results indicate that as the inclination angle of the jacket structure during deployment increases,the stable settlement speed decreases.The impact force at the bottom edge during touchdown is relatively small but the stress is larger,approximately 15 MPa,particularly more obvious in the middle area.This research can offer references for the rational planning and design of jacket structure placement and provide theoretical support for optimizing the placement process of jacket structures.

关 键 词：导管架再利用技术 多体动力学仿真 莫里森方程 碰撞模型 

分 类 号：S953.1[农业科学—水产养殖]