基于THAFTS软件考虑地形影响的浮式平台水弹性响应  

Hydroelasticity of floating platform near island effected by bathymetry based on THAFTS software

作　　者：陆晔[1] 周叶[1] 范垂中 张正伟[1] 田超[1] LU Ye;ZHOU Ye;FAN Chui-zhong;ZHANG Zheng-wei;TIAN Chao(China Ship Scientific Research Center,Wuxi 214082,China;Dalian Shipbuilding Industry Offshore Co.,Ltd.,Dalian 116113,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]大连船舶重工集团海洋工程有限公司,辽宁大连116113

出　　处：《船舶力学》2019年第5期602-610,共9页Journal of Ship Mechanics

基　　金：国家重点基础研究发展计划项目(2013CB036100);国家重点研发计划项目(2017YFB0202700)

摘　　要：与外海开阔海域的情形不同,浮式平台在岛礁附近布置处最重要的特点就是非均匀的复杂海底地形。文章采用缓变水深条件的浮式结构物水弹性力学分析方法,将海底地形作为固定边界条件,基于THAFTS软件进行浮式平台的三维水弹性运动响应分析,对比研究了不同水深、并考虑复杂地形对浮式平台结构的运动和应力响应的影响。结合短期预报的极值结果确定了设计波参数,并将模态分析的应力和设计波参数进行叠加,得到近岛礁浮式平台的整体应力分布,结果表明在近岛礁布置浮式平台必须考虑非均匀海底地形的影响。Unlike the open sea, the most important feature of marine environment for the floating platform near the island is the non-uniform complex seabed bottom. In this paper, the hydroelastic analysis method with low variable water depths is used to calculate the responses of the floating structures, considering the sea bed as the boundary condition. Based on the THAFTS software, the three-dimensional hydroelastic motion response analysis of the floating platform is carried out. Considering different water depths and the complex bathymetry, the motion and structural responses of floating platform were compared. The design wave parameters were confirmed by the short-term forecast extreme results, and the whole stress distribution of floating platform structures near the reef was shown plus modal stress by superposition. Finally, the strength evaluation of floating platform indicates that the effect of inhomogeneous bottom topography plays a large role in arrangement of floating platform near reef.

关 键 词：THAFTS软件 水弹性 海底地形 变水深 并行计算 

分 类 号：U661.4[交通运输工程—船舶及航道工程]