RETROFITTING METHODS FOR EXISTING WIND TURBINE FOUNDATIONS AND THEIR SEISMIC RESPONSE STUDY
One of the key issues in the retrofit of existing wind turbine foundations is how to assess their perfor-mance under seismic loading.This paper proposes two connection methods:internal and external composite connec-tions.A finite element model of the wind turbine structure-foundation-soil system is established using ABAQUS.Through dynamic time history analysis under seismic loading,the influence of internal and external composite con-nection schemes on the dynamic response of the wind turbine under seismic action is investigated.The research re-sults indicate that the internal and external composite connection schemes between the foundation ring and anchor bolts can effectively improve the stability and safety of the wind turbine.The paper recommends prioritizing the ex-ternal composite connection scheme.
numerical analysis of wind turbine foundationviscoelastic boundarynatural frequencyseismic load
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