INFLUENCE OF HORIZONTAL CYCLIC LOADING FREQUENCY ON BEARING CHARACTERISTICS OF SUCTION BUCKET FOUNDATION

Zhang Yuan; Hao Limeng; Li Guangnian; Zhang Zhaode

doi:10.19912/j.0254-0096.tynxb.2025-1141

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (12) : 443-451. DOI: 10.19912/j.0254-0096.tynxb.2025-1141

INFLUENCE OF HORIZONTAL CYCLIC LOADING FREQUENCY ON BEARING CHARACTERISTICS OF SUCTION BUCKET FOUNDATION

Zhang Yuan¹, Hao Limeng¹, Li Guangnian², Zhang Zhaode³

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Abstract

To investigate the bearing characteristics of wide and shallow suction bucket foundation for offshore wind power in sandy soil foundation under horizontal cyclic loading, this study systematically investigates the failure mechanism and soil-structure interaction law of the bucket foundation under large-angle conditions with varying cyclic loading frequencies （0.1~0.9 Hz） through scaled model tests combined with ABAQUS finite element analysis. The model test combined with the finite element results show that：when the foundation is subjected to the horizontal ultimate load of large turning angle,it shows the failure mode dominated by rigid body rotation,the soil body in the passive zone produces significant shear deformation,the soil body in the active zone produces depression,the phenomenon of bucket-soil separation occurs under the foundation roof,the rotation point is transferred from the back side of the foundation to the front side of the foundation in the process of the foundation movement,and the change of the soil pressure of the roof shows the characteristics of asymmetric distribution. Under large-angle conditions, an increase in cyclic loading frequency leads to a significant increase in the amplitude of soil pressure change, which is expected to provide a reference for the anti-overturning design and long-term service performance evaluation of offshore wind power foundations.

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offshore wind power / cyclic loads / foundations / suction buckets / model test

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Zhang Yuan, Hao Limeng, Li Guangnian, Zhang Zhaode. INFLUENCE OF HORIZONTAL CYCLIC LOADING FREQUENCY ON BEARING CHARACTERISTICS OF SUCTION BUCKET FOUNDATION[J]. Acta Energiae Solaris Sinica. 2026, 47(12): 443-451 https://doi.org/10.19912/j.0254-0096.tynxb.2025-1141

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