海上风机基础与网箱融合系统静力计算  

Static Calculation on Integrated System of Offshore Wind Turbine Foundation and Aquaculture Cage

作　　者：王立鹤 符妃 WANG Lihe;FU Fei(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,Guangdong,China;School of Marine Engineering,Jimei University,Xiamen 361021,Fujian,China;Guangxi Key Laboratory of Ocean Engineering Equipment and Technology,Qinzhou 535011,Guangxi,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510663 [2]集美大学轮机工程学院,福建厦门361021 [3]广西海洋工程装备与技术重点实验室,广西钦州535011

出　　处：《南方能源建设》2024年第4期76-87,共12页Southern Energy Construction

基　　金：国家自然科学基金项目“基于悬挂调谐质量惯容阻尼器的大型浮式风机减振机理及分析方法研究”(52271268);中国能建广东院科技项目“多能融合浮式平台概念设计及关键技术研究”(EV11251W)。

摘　　要：[目的]随着海上风电场不断增加,海域使用矛盾也越来越严重,海上风电和渔业养殖融合发展吸引越来越多的关注,并陆续提出了不同类型的风机基础融合养殖网箱的结构设计。这些设计多数处于概念设计阶段,距离工程应用还有比较遥远的距离。[方法]文章基于网衣质量相等、网衣附加海生物质量相等、网衣水动力性能等效的要求,提出高效的网箱等效载荷计算方法。根据14 MW风机设计载荷和海洋水文条件,设计适用于14 MW海上风机的导管架基础结构,并融合内网箱和外网箱,设计出2种导管架基础与海洋养殖网箱融合系统。基于Morison模型,考虑非线性波的影响,根据提出的网箱等效建模方法在SACS对不同设计进行静力分析。[结果]研究表明,内外网箱与导管架融合设计对整机频率一二阶影响较小可忽略不计,对三阶频率影响较大;转角工况是控制工况,增加内外养殖网箱后需对导管架基础进行局部加强,14 MW海上风机导管架基础与内网箱或外网箱融合的设计方案的计算结果均满足规范设计要求。[结论]研究结果可为海上风机基础与海洋养殖网箱融合系统设计的工程应用提供参考。[Introduction]With the continuous increase of offshore wind farms,conflicts in the use of marine areas has become increasingly severe.The integrated development of offshore wind power and aquaculture has attracted growing attention,with various structural designs for wind turbine foundations integrated with aquaculture cages being proposed.However,most of these designs are still in the conceptual stage and far from practical engineering applications.[Method]Based on the requirements of equal netting mass,equal biomass of marine growth attached to the netting,and equivalent hydrodynamic performance of the netting,the paper introduced an efficient method to calculate the equivalent loads of the cages.Considering the design loads of a 14 MW wind turbine and marine hydrological conditions,a jacket foundation structure suitable for the 14 MW offshore wind turbines was designed,integrating internal and external aquaculture cages to propose two integrated systems combining jacket foundations and marine aquaculture cages.Using the Morison model and considering the impact of nonlinear waves,static analyses of different designs were conducted in SACS based on the jacket foundation has little to negligible impact on the first and second order frequencies of the overall system and a more significant effect on the third order frequency.The rotation condition is the controlling case,and after adding internal and external aquaculture cages,local reinforcement of the jacket foundation is required.Computational results for the integrated designs of the 14 MW offshore wind turbine jacket foundation with internal or external cages meet the regulatory design requirements.[Conclusion]The analysis results provide a reference for the engineering application of the integrated system design of offshore wind turbine foundations and marine aquaculture cage systems.

关 键 词：14 MW海上风机 导管架基础 养殖网箱 网箱等效载荷 静力计算 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程] S955[农业科学—水产养殖]