RESEARCH ON OPTIMIZATION AND PENETRATION RESISTANCE OFTHICK-WALLED BUCKET FOUNDATION WITH BLADE FOOT FOR OFFSHORE WIND TURBINE

Lian Jijian; Zheng Hongjie; Yang Xu; Zhao Hao

doi:10.19912/j.0254-0096.tynxb.2021-0385

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (12) : 399-406. DOI: 10.19912/j.0254-0096.tynxb.2021-0385

RESEARCH ON OPTIMIZATION AND PENETRATION RESISTANCE OFTHICK-WALLED BUCKET FOUNDATION WITH BLADE FOOT FOR OFFSHORE WIND TURBINE

Lian Jijian^1-3, Zheng Hongjie^1,2, Yang Xu^1,2, Zhao Hao^1,2

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Abstract

In this paper, the penetration resistance reduction is carried out by adding a blade foot at the end of the skirt, and the optimal shape of the blade foot is searched through the model test. At the same time, the ALE method is used to simulate the test sinking process. The results show that adding the blade foot at the end of the thick-walled skirt can effectively reduce the end resistance, and it is concluded that the optimal shape of the blade foot is a 60° angle, when sinking in the sand. The experimental comparison proves the feasibility of the theoretical formula to calculate the end pressure, the ALE method can simulate the sinking process of the test model with an error within 20%. Finally, the stress distribution on the end and slope of the blade foot is analyzed by using the ALE method, and the influence of soil parameters on the subsidence resistance of the blade foot is studied.

Key words

offshore wind farms / offshore wind turbines / offshore wind power structure / bucket foundation / thick-walled bucket foundation / penetration resistance / ALE method

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Lian Jijian, Zheng Hongjie, Yang Xu, Zhao Hao. RESEARCH ON OPTIMIZATION AND PENETRATION RESISTANCE OFTHICK-WALLED BUCKET FOUNDATION WITH BLADE FOOT FOR OFFSHORE WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2022, 43(12): 399-406 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0385

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