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Towing Motion Characteristics of Composite Bucket Foundation for Offshore Wind Turbines

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  • Hongyan Ding

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
    Key Laboratory of Coast Civil Structure Safety (Ministry of Education), Tianjin University, Tianjin 300072, China
    School of Civil Engineering, Tianjin University, Tianjin 300072, China)

  • Xing Zhao

    (School of Civil Engineering, Tianjin University, Tianjin 300072, China)

  • Conghuan Le

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
    School of Civil Engineering, Tianjin University, Tianjin 300072, China)

  • Puyang Zhang

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
    School of Civil Engineering, Tianjin University, Tianjin 300072, China)

  • Qiaoling Min

    (School of Civil Engineering, Tianjin University, Tianjin 300072, China)

Abstract

Composite bucket foundation (CBF) is an environmentally friendly form of offshore wind power foundation. By virtue of the air-floating subdivision structure in the bucket, the foundation has a self-floating characteristic and can allow for long-distance air-floating towing and transport. In this study, first, a numerical analysis was performed on the towing motion characteristics of CBF, and the formula for foundation stability was deduced; then, we probed into the variation rules of the natural period of the foundation with draft and analyzed the response amplitude operator (RAO) responses, added mass coefficients, radiation damping coefficients, and exciting forces (moments) of the composite bucket foundation under different drafts and different wave directions. Finally, we clarified the basic hydrodynamic characteristics of the composite bucket foundation in the frequency domain and adopted multiple random wave models to investigate the effects of different wave heights, periods, and spectral peak factors on the towing motion characteristics of composite bucket foundation.

Suggested Citation

  • Hongyan Ding & Xing Zhao & Conghuan Le & Puyang Zhang & Qiaoling Min, 2019. "Towing Motion Characteristics of Composite Bucket Foundation for Offshore Wind Turbines," Energies, MDPI, vol. 12(19), pages 1-24, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3767-:d:273103
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    References listed on IDEAS

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    1. He, Fang & Huang, Zhenhua & Law, Adrian Wing-Keung, 2013. "An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction," Applied Energy, Elsevier, vol. 106(C), pages 222-231.
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    Cited by:

    1. Lingqian Meng & Hongyan Ding, 2022. "Experimental Study on the Contact Force between the Vessel and CBF in the Integrated Floating Transportation Process of Offshore Wind Power," Energies, MDPI, vol. 15(21), pages 1-10, October.
    2. Hongyan Ding & Zuntao Feng & Puyang Zhang & Conghuan Le & Yaohua Guo, 2020. "Floating Performance of a Composite Bucket Foundation with an Offshore Wind Tower during Transportation," Energies, MDPI, vol. 13(4), pages 1-19, February.

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