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Horizontal Bearing Performance of the Four-Bucket Jacket Foundation

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Abstract

As an important part of offshore wind turbine support and fixed units, the multibucket jacket foundation bears large loads and a complex marine environment. In this paper, the horizontal bearing characteristics of the four-bucket jacket foundation of offshore wind power in sandy soil are studied. Through model tests and numerical simulations, the influence of bucket foundation sealing properties, load application speed, and loading direction on foundation-bearing capacity are discussed. The results show that the horizontal ultimate bearing capacity of the foundation in the nonsealing condition is decreased by 51.3% compared with the sealing condition; therefore, after the foundation penetration construction is completed, the bucket sealing must be ensured to increase the load-bearing performance of the structure. At a loading speed of 3.25 mm/s, the horizontal ultimate bearing capacity of the foundation is increased by 9.4% over the working condition of 1.85 mm/s. The bearing capacity of the foundation is maximized in the loading direction α =45° and is the smallest when α =0°. That is, the foundation can maximize its load-bearing performance under the condition of single-bucket compression/tension. During the design process, the main load of the structure should be loaded in the 45° direction. The contrast error of the experiment and numerical simulation does not exceed 10%. The research results have important guiding importance for designing and constructing the jacket foundation and can be used as a reference for the stable operation and sustainable development of offshore wind power systems.

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Authors and Affiliations

  1. School of Petroleum Engineering, China University of Petroleum (East China), Shandong, Dongying, 266580, China

    Xi Wei & Teng Wang

  2. Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., LTD, Dongying, 257000, China

    Xi Wei & Yuehong Wang

  3. Greatwall Drilling Company Iraq Branch, Baghdad, 62001, Iraq

    Yanqing Liu

  4. State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin, 300072, China

    Mingtao Jiang & Puyang Zhang

Authors
  1. Xi Wei
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  2. Teng Wang
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  3. Yuehong Wang
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  4. Yanqing Liu
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  5. Mingtao Jiang
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  6. Puyang Zhang
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Correspondence to Puyang Zhang.

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Competing interest The authors have no competing interests to declare that are relevant to the content of this article.

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Article Highlights

• The horizontal load-bearing performance of the offshore wind turbine four-bucket jacket foundation is addressed.

• The two research methods of model experiments and numerical simulations are found to support and supplement each other.

• The bucket top sealing property, loading speed, and loading direction are used as research variables.

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Wei, X., Wang, T., Wang, Y. et al. Horizontal Bearing Performance of the Four-Bucket Jacket Foundation. J. Marine. Sci. Appl. (2024). https://doi.org/10.1007/s11804-024-00450-1

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  • DOI: https://doi.org/10.1007/s11804-024-00450-1

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