以中国福建某较深海域风电场为背景,提出一种海上风电宽浅型三筒导管架基础结构,继而通过建立考虑分层土体的基础整体有限元模型,对分层土中宽浅型三筒导管架基础静动力特性及浮运稳性展开研究。研究结果表明,正常荷载作用下此基础结构法兰倾斜率为3.98‰,满足规范要求：极限荷载作用下,基础结构各部位应力满足要求;基础-塔筒-机组整体共振校核满足要求：基础可在4级风浪以内的海况下进行自浮远距离拖航浮运;等效疲劳荷载作用下,基础结构疲劳损伤满足要求。
Abstract
The wide and shallow three-bucket jacket foundation structure for offshore wind power was proposed based on a deep sea wind farm in Fujian, China. Then, the static and dynamic characteristics, floating stability of the wide and shallow three-bucket jacket foundation in layered soil were studied by establishing a foundation integral finite element model considering layered soil. The results show that the flange inclination rate of the foundation structure is 3.98‰ under normal load, which meets the requirements of the specifications. Under the ultimate load, the stress of each part of the foundation structure meets the requirements. The overall resonance check of foundation-tower-turbine meets the requirements： The foundation can be towed for long distance under the sea conditions within the wind and waves of level 4. Under the equivalent fatigue load, the fatigue damage of the foundation meets the requirements.
关键词
海洋技术 /
海上风电 /
基础 /
多筒基础 /
导管架 /
自浮运输
Key words
marine technology /
offshore wind turbines /
foundations /
multi-bucket foundation /
jacket /
floating transportation
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基金
福建深远海海上风电机组基础设计施工关键技术研究项目（CTGFB/003-2018）; 国家自然科学基金（51909188）
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