金瑞佳,张崇伟,柳叶,耿宝磊,郑艳娜.顺应式海洋平台慢漂运动物理模型试验研究[J].海洋工程,2021,39(4):38~45
顺应式海洋平台慢漂运动物理模型试验研究
Physical model investigation on the slow drift motion of compliant mooring floating structure
投稿时间:2020-07-02  
DOI:10.16483/j.issn.1005-9865.2021.04.005
中文关键词:  系泊浮体  慢漂运动  系泊刚度  浮体形状  海洋平台
英文关键词:mooring floating structure  slow drift motion  mooring stiffness  shape of the floating structure  platform
基金项目:国家自然科学基金(51809133);博士后基金面上项目(2019M652479)
作者单位E-mail
金瑞佳 交通运输部天津水运工程科学研究所, 天津 300456
中国海洋大学 工程学院, 山东 青岛 266100 
492472669@qq.com 
张崇伟 交通运输部天津水运工程科学研究所, 天津 300456  
柳叶 天津大学 建筑工程学院, 天津 300072  
耿宝磊 交通运输部天津水运工程科学研究所, 天津 300456  
郑艳娜 大连海洋大学 海洋与土木工程学院, 辽宁 大连 116036  
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中文摘要:
      为研究顺应式海洋平台慢漂运动的影响因素,以截断圆柱和漂浮方箱为例进行了不规则波作用下的慢漂运动模型试验。测量了不同系泊刚度条件下的漂浮方箱以及相同系泊刚度条件下的截断圆柱和漂浮方箱在静水中自由衰减运动和在不规则波中的运动响应,并将运动响应分解成一阶波频运动响应和二阶低频运动响应,分析了系泊刚度和浮体形状对浮体运动的影响。通过物理模型试验发现了系泊刚度及浮体形状对顺应式系泊浮体一阶运动标准差和二阶低频运动平均漂移值和标准差的关系。结果表明由于顺应式浮体的固有周期远离波浪谱峰周期时,系泊刚度以及浮体形状对慢漂运动的一阶运动响应影响不大;二阶低频运动相对偏离平衡位置的平均值和标准差均随系泊刚度增大而减小,浮体形状同样对慢漂运动的二阶低频纵荡运动响应影响较大。试验结果为实际海洋工程的外形选择和系泊刚度选择提供数据支持。
英文摘要:
      In order to study the influencing factors of the slow drift motion of compliant offshore platform, the physical model tests of the truncated cylinder and the floating box in irregular waves were carried out. The motion responses of the floating box with different mooring stiffness and the truncated cylinder and the floating box with the same mooring stiffness in the surge and heave directions in irregular waves were measured. The motion responses were decomposed into the first-order motion responses at wave frequency and the second-order motion responses at low-frequency. The influence of the mooring stiffness and the shape of the floating structure on the motion of the floating structure was analyzed. Through the physical model test, the relationship between the mooring stiffness, the shape of the floating body and the motion response of the compliant mooring floating body was found, containing the first-order standard deviation as well as the second-order average drift value and standard deviation of the low-frequency motion. The research results show that the mooring stiffness and the shape of the floating body have little influence on the first-order motion responses of slow drift motion when the natural period of the compliant mooring floating body is far from peak period of wave spectrum; the average value and standard deviation of relative deviation from the equilibrium position of the second-order motion at low-frequency decrease with the increase of mooring stiffness, and the shape of the floating body has a great influence on the average deviation of the surge direction of the second-order low-frequency motion response of slow drift motion, which provides data support for the shape selection and the mooring stiffness selection of the actual offshore engineering.
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