SEISMIC RESPONSE ANALYSIS OF PILE-BUCKET COMPOSITE FOUNDATION FOR OFFSHORE WIND TURBINE IN CLAY

Zhang Xiaoling; Li Yunqi; Wang Piguang; Mu Kun; Cheng Xinglei

doi:10.19912/j.0254-0096.tynxb.2023-0227

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (2) : 189-197. DOI: 10.19912/j.0254-0096.tynxb.2023-0227

SEISMIC RESPONSE ANALYSIS OF PILE-BUCKET COMPOSITE FOUNDATION FOR OFFSHORE WIND TURBINE IN CLAY

Zhang Xiaoling¹, Li Yunqi¹, Wang Piguang¹, Mu Kun², Cheng Xinglei²

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Abstract

Referring to the structural parameters of NREL offshore wind turbine, a three-dimensional finite element model of offshore wind turbine supported by pile-bucket composite foundation in clay is established based on ABAQUS software platform. The non-linear kinematic hardening model in the form of total stress is used to describe the undrained dynamic stress-strain response of clay. The random wind loads and wave loads are simulated by compiling MATLAB program. The time-domain overall dynamic response analysis of offshore wind turbine supported by pile-bucket composite foundation under earthquake, wind, wave and current loads is carried out, and then the bearing mechanism of pile-bucket composite foundation is revealed. The influence of seismic intensity, soil strength and foundation size on the dynamic response of pile-bucket composite foundation is analyzed. The research results can provide guidance for the seismic design of pile-bucket composite foundation for offshore wind turbine in clay.

Key words

offshore wind turbines / numerical simulation / seismic response / clay / pile-bucket composite foundation

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Zhang Xiaoling, Li Yunqi, Wang Piguang, Mu Kun, Cheng Xinglei. SEISMIC RESPONSE ANALYSIS OF PILE-BUCKET COMPOSITE FOUNDATION FOR OFFSHORE WIND TURBINE IN CLAY[J]. Acta Energiae Solaris Sinica. 2024, 45(2): 189-197 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0227

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