为实现海洋空间立体化,最大化经济产出,提出一种单桩基础海上风电机组（OWT）融合海水养殖的新型增殖型海上风电机组结构（MOWTAC）。该研究提出基于时域耦合数值仿真工具FAST v8的新型增殖型海上风力机水动力计算模型,建立新型增殖型海上风力机在地震、风和波浪荷载作用下的整体耦合计算模型。进一步,开展地震组合工况作用下新型增殖型海上风力机整体结构动力响应计算。由计算结果可知,地震荷载为新型增殖型海上风力机在地震、风和波浪荷载作用下海上风力机结构响应的控制荷载。相比于风浪联合工况,新型增殖型风力机在地震荷载激励下2阶频率对于结构响应的影响显著增加。
Abstract
In order to make the best use of ocean resource and maximize economic benefits, a novel offshore wind turbine （OWT） with a breeding function（MOWTAC） is suggested, which is an integration of monopile OWT and mariculture. In the study, the hydrodynamic analysis model of MOWTAC is proposed based on the time-domain fully couple numerical simulation tool FAST v8, and the coupled analysis model of under earthquake, wind and wave loads is established in the updated FAST v8. Then, the dynamic characteristics and structural responses of MOWTAC under complex environmental conditions are analyzed, and the comparisons are carried out. According to the research, the dominant influence of seismic load on the structural responses of MOWTAC in the time domain is observed. Meanwhile, the influence of the second natural frequency on the structural response of MOWTAC increased significantly under seismic excitations, by comparing with wind and wave loads.
关键词
海上风力机 /
海水养殖 /
地震 /
耦合模型
Key words
offshore wind turbines /
mariculture /
earthquake /
coupled model
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基金
国家自然科学基金（51939002）; 广东省海洋经济发展（海洋六大产业）专项基金（粤自然资合[2020]016）
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