柔性气囊助浮法拆除导管架技术研究  

Research on the technology of removing jacket by flexible air-bag-assisted floating method

作　　者：冯士伦[1,2] 朱晓宇 李焱[1,2] 唐友刚[1,2] FENG Shilun;ZHU Xiaoyu;LI Yan;TANG Yougang(School of Civil Engineering, Tianjin University, Tianjin 300350, China;State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China;Qingdao Branch of China Classification Society, Qingdao 300457, China)

机构地区：[1]天津大学建筑工程学院,天津300350 [2]天津大学水利工程仿真与安全国家重点实验室,天津300350 [3]中国船级社青岛分社,山东青岛300457

出　　处：《海洋工程》2022年第2期36-43,共8页The Ocean Engineering

基　　金：工信部高新船舶技术专项(G014614002);上海交通大学海洋工程国家重点实验室开放基金项目(GKZD010081);中国博士后科学基金项目(2021T140506)。

摘　　要：文中研究采用柔性气囊助浮法起升导管架的拆除技术。浅水海域浮吊进入困难并且拆除导管架的施工费用昂贵。考虑气囊产生的浮力巨大、价格便宜及连接结构方便的特点,针对即将拆除的QK18-2平台,设计气囊助浮起升导管架的技术方案。考虑水深确定导管架吃水,设计气囊与导管架的连接方式。针对导管架在位起浮状态,计算带有气囊的导管架系统幅频响应RAOs,考虑不同的海洋环境参数,计算分析风浪流作用下导管架系统6个自由度的时域运动响应,文中提出了多点系泊控制导管架运动的合理系泊方式。研究结果表明,气囊助浮法拆除导管架技术具有较高的工程实用价值,针对目标导管架平台设计的气囊助浮拆除技术方案,具有费用低、风险小及不需使用浮吊的技术优势,该项技术可以在导管架平台拆除中推广应用。In this research,the removal technology of lifting jacket by flexible air-bag-assisted floating method is studied.It is difficult for the floating crane to enter the shallow water area,and the construction cost of removing the jacket is expensive.Considering the huge buoyancy,low price and convenient connection structure produced by the air-bag,the technical scheme of air-bag-assisted floating jacket is designed for the QK18-2 platform to be demolished.Considering the water depth,the draft of jacket is determined,and the connection mode between the air-bag and jacket is designed.The amplitude frequency response(RAOs)of the jacket system with air-bag is calculated according to the in-situ floating state of the jacket.Considering different marine environmental parameters,the time-domain motion response of the jacket system with six degrees of freedom under the action of wind,wave and current is calculated and analyzed.The reasonable mooring mode of multi-point mooring to control the jacket movement is proposed.The research results show that the technology proposed in this paper has high engineering practical value.The technology scheme designed for the target jacket platform has the technical advantages of low cost,low risk and no need to use the floating crane.This technology can be popularized and applied in the removal of jacket platform.

关 键 词：导管架 气囊助浮法 稳性 垂荡 横摇 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]