ANALYSIS OF PENETRATION RESISTANCE OF SUCTION BUCKET FOUNDATION FOR OFFSHORE WIND TURBINES IN SILTY CLAY

Pan Chao; Lou Rui; Wang Fei; Tian Baotao

doi:10.19912/j.0254-0096.tynxb.2025-0477

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (7) : 268-275. DOI: 10.19912/j.0254-0096.tynxb.2025-0477

ANALYSIS OF PENETRATION RESISTANCE OF SUCTION BUCKET FOUNDATION FOR OFFSHORE WIND TURBINES IN SILTY CLAY

Pan Chao, Lou Rui, Wang Fei, Tian Baotao

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Abstract

This study selects an actual case of a suction bucket jacket in a wind farm in the Dalian sea area,monitor key parameters such as the bucket pressure and velocity during the penetration process,and compares and analyzes them with the calculated values of DNV calculation to obtain the relationship and characteristics of resistance, pressure,and velocity during the penetration process in silty clay. The research results indicate that the DNV calculation of self-weight penetration depth into the soil is relatively accurate. The change of actual driving suction force inside the bucket shows three stages： increase,stability,and increase,with the stability stage accounting for the main part. The actual driving suction force during the initial stage of suction penetration is greater than the calculated value,and then continues to be lower than the calculated value. Continuous dynamic suction penetration can reduce the resistance to a certain extent. The suction bucket jacket should be continuously penetrated as much as possible during the actual operation The actual driving suction force of the final penetration is less than the calculated value,about 76.0% of the calculated value in silty clay. The suction penetration velocity shows a characteristic of rapid increase at first,followed by a decrease to a smaller stable velocity for continuous penetration.

Key words

offshore wind turbines / suction bucket / driving suction force / penetration resistance / suction penetration / self-weight penetration

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Pan Chao, Lou Rui, Wang Fei, Tian Baotao. ANALYSIS OF PENETRATION RESISTANCE OF SUCTION BUCKET FOUNDATION FOR OFFSHORE WIND TURBINES IN SILTY CLAY[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 268-275 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0477

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