王开放, 朱艳, 俞梅欣, 等. 2022. 海上风机吸力式筒形基础抗压承载模式研究[J]. 工程地质学报, 30(5): 1753-1761. doi: 10.13544/j.cnki.jeg.2022-0472.
    引用本文: 王开放, 朱艳, 俞梅欣, 等. 2022. 海上风机吸力式筒形基础抗压承载模式研究[J]. 工程地质学报, 30(5): 1753-1761. doi: 10.13544/j.cnki.jeg.2022-0472.
    Wang Kaifang, Zhu Yan, Yu Meixin, et al. 2022.Bearing capacity model of sunction bucket foundation for offshore wind turbine[J]. Journal of Engineering Geology, 30(5): 1753-1761. doi: 10.13544/j.cnki.jeg.2022-0472.
    Citation: Wang Kaifang, Zhu Yan, Yu Meixin, et al. 2022.Bearing capacity model of sunction bucket foundation for offshore wind turbine[J]. Journal of Engineering Geology, 30(5): 1753-1761. doi: 10.13544/j.cnki.jeg.2022-0472.

    海上风机吸力式筒形基础抗压承载模式研究

    BEARING CAPACITY MODEL OF SUNCTION BUCKET FOUNDATION FOR OFFSHORE WIND TURBINE

    • 摘要: 吸力筒基础具有承载能力高、工艺简单、施工方便等优势,越来越广泛地应用于海上风电基础设计中。目前,吸力筒基础抗压承载计算方法尚没有统一的标准。为了降低海上风电基础设计成本,本文基于现有的API规范和地基承载力理论,总结3种不同吸力筒抗压承载模式,并提出“筒盖+筒壁外侧摩阻力”承载模式;根据工程案例和有限元软件PLAXIS验证其合理性,得出“筒壁端+筒壁内外侧摩阻力”承载模式和本文提出的“筒盖+筒壁外侧摩阻力”承载模式的计算结果符合DNV-OS-J101规范标准;按照本文提出的吸力筒抗压承载模式设计吸力筒尺寸,最大可降低13%的设计基础材料成本,有利于为海上风电吸力筒基础设计提供参考依据。

       

      Abstract: The suction bucket foundation has the advantages of bearing capacity,easy installation,reusability and low construction costs,and is gradually used in offshore wind turbine. At present,there is no unified standard for the calculation method of bearing capacity of the suction bucket foundation. This paper is based on API and the theory of foundation bearing capacity,summarizes three different bearing capacity modes of the suction bucket foundation,and proposes a calculation formula for the bearing mode of "lid+outer frictional resistance of bucket". According to the engineering case and the finite element software PLAXIS,this theory is verified,and the optimized design scheme is proposed. The calculation results of the "resistance of tips+the outer and inner frictional resistance of bucket" and the "lid+outer frictional resistance of bucket" proposed in this paper conform to the DNV-OS-J101 standard. The proposed design scheme can reduce the material costs of the bucket foundation by up to 13%,which is obtained for engineering practice.

       

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