油气资源开发保障平台水弹性响应  

Hydroelastic Responses of Support Platforms for Oil and Gas Resources Development

作　　者：滕蓓 陆晔[2] 郑文慧[2] 陈彧超 张华[2] 倪歆韵[2] TENG Bei;LU Ye;ZHENG Wen-hui;CHEN Yu-chao;ZHANG Hua;NI Xin-yun(Wuxi Institute of Communications Technology,Wuxi 214151,China;China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]江苏省无锡交通高等职业技术学校,江苏无锡214151 [2]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2023年第6期865-876,共12页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51809241)。

摘　　要：本文在设计阶段通过水弹性响应分析,有效地评价了油气资源开发保障平台的结构安全性。基于COMPASSTHAFTS软件,通过计算深海油气资源开发保障平台的模态及模态载荷,可以在线性频域上进行模态叠加而得到运动响应和截面载荷。采用JONSWAP波浪谱进行短期和长期载荷预报分析,从中选取危险的设计波高工况进行应力评估。数值计算结果表明,在评估海洋结构水弹性响应特点和几个剖面的载荷时,结构的中间部分出现了最大弯矩和最大应力,这是因为一阶弹性模态即垂向弯曲模态在模态叠加方法中起了至关重要的作用。This paper introduces the successful and efficient evaluation of the structural safety of the support platform for oil and gas resources development by hydroelastic analysis during the design phase.Based on the COMPASS-THAFTS software,with the modes and modal loads of the deep-sea support platform calculated,the motion response and sectional load were easily obtained by superposi⁃tion in linear frequency domain.By using the JONSWAP spectrum,the design wave conditions were picked for stress assessment in the short-term and long-term load predictions.The numerical simula⁃tion results show that the maximum moments and stresses occur at the mid-section of the structures,the reason of which is that the first-order elastic mode of vertical bending plays a great role in the su⁃perposition method.

关 键 词：水弹性 运动响应 极限载荷 垂向弯矩 

分 类 号：U661.3[交通运输工程—船舶及航道工程]