EXPERIMENTAL RESEARCH ON LOCAL EROSION CHARACTERISTICS OF FIVE-CONNECTED BUCKET FOUNDATION FOR OFFSHORE WIND POWER

Jia Zhaolin; Zhang Xiaoxu; Lian Jijian; Qiu Zhaoguo; Guo Xinyu; Guo Mengying

doi:10.19912/j.0254-0096.tynxb.2024-2100

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (4) : 240-247. DOI: 10.19912/j.0254-0096.tynxb.2024-2100

EXPERIMENTAL RESEARCH ON LOCAL EROSION CHARACTERISTICS OF FIVE-CONNECTED BUCKET FOUNDATION FOR OFFSHORE WIND POWER

Jia Zhaolin^1,2, Zhang Xiaoxu^1,2, Lian Jijian³, Qiu Zhaoguo⁴, Guo Xinyu^1,2, Guo Mengying^1,2

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Abstract

The five-connected bucket foundation is an innovative modification of the composite bucket foundation, proposed to address the complex marine conditions near Hainan Island and the demand for wind turbines with a capacity of over 15 MW. It has been optimized in terms of load transfer mode, allowable pressure difference, and self-floating stability, enhancing its adaptability to deep-water and large-capacity wind turbines. Based on a project in Hainan, and considering the structural characteristics of the five-connected bucket foundation and the potential issue of the skirt not settling properly, a 1∶80 scale model was selected according to the principle of similarity. Model tests were designed with different incoming flow angles and skirt exposure heights as variable conditions to study the local scour characteristics of this new type of offshore wind foundation. The experimental results include the history curves of local scour depth under different flow angles and skirt exposure heights, the local topography after scour equilibrium, and the shape and size of the scour pit. The study clarifies the local scour characteristics of the five-connected bucket foundation under unidirectional flow and analyzes the impact of skirt exposure on the scour results.

Key words

offshore wind power / scaled model test / five-connected bucket foundation / exposed height / scour pit characteristics

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Jia Zhaolin, Zhang Xiaoxu, Lian Jijian, Qiu Zhaoguo, Guo Xinyu, Guo Mengying. EXPERIMENTAL RESEARCH ON LOCAL EROSION CHARACTERISTICS OF FIVE-CONNECTED BUCKET FOUNDATION FOR OFFSHORE WIND POWER[J]. Acta Energiae Solaris Sinica. 2026, 47(4): 240-247 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2100

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