海上风电机组受到的外力载荷较为复杂,如何考虑所有外载的相互耦合对于获得更为准确的结构内力和变形等动力响应起到了关键性作用,同时也是响应海上风力发电机组降本需求的重要手段。通过浙江某海上风电项目的单桩基础分析对比分离式设计和一体化设计的区别,结果表明：分离式设计相比于一体化设计在风力机载荷和波浪载荷上缺乏时间的一致性;因波浪作用产生的部分惯性效应被重复考虑以及载荷相关系数的规定上也更为保守;一体化设计无论是在极限还是疲劳分析上都更优于分离式设计,能较大节约海上风力机基础的成本。
Abstract
The external force loads on offshore wind turbines are complex. Considering the coupling effects among all external loads is crucial for obtaining more accurate dynamic responses, such as internal forces and deformations, and is also an important means to reduce the cost of offshore wind power generation. By comparing and analyzing the differences between the separated design and integrated design based on the monopile foundation of a certain offshore wind power project in Zhejiang Province, it was found that the separated design lacks consistency in wind and wave loads over time, repeats the partial inertial effects caused by wave action, and has more conservative provisions on load correlation coefficients than the integrated design. The integrated design is superior to the separated design in both ultimate and fatigue analyses, and can greatly reduce the cost of offshore wind turbine foundations.
关键词
海上风电机组 /
基础 /
疲劳载荷 /
极限载荷 /
一体化设计
Key words
offshore wind turbines /
foundations /
fatigue load /
ultimate load /
integrated design
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参考文献
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基金
浙江省“尖兵”“领雁”研发攻关计划项目（2022C01178）
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