Wind-induced dynamic amplification effects on the shallow foundation of a horizontal-axis wind turbine |
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| Institution: | 1. Department of Civil Engineering, Shanghai University, Shanghai 200444, China;2. Ecole des Ponts ParisTech, U.R. Navier/CERMES, 6-8 av. Blaise Pascal, Cité Descartes, Champs-sur-Marne, 77455 Marne-la-Vallée Cedex 2, France;3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;2. Hunan Key Laboratory of Geomechanics and Engineering Safety, Xiangtan University, Xiangtan 411105, China;3. Laboratoire d''Etude des Microstructures et de Mécanique des Matériaux, CNRS UMR 7239, Université de Lorraine, Ile du Saulcy, Metz 57045, France |
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| Abstract: | Wind loads are random variables, which induce significantly greater responses in structures than do static loads. We develop a finite-infinite element model of a 2 MW wind turbine using ABAQUS and then verify it with in situ data. The adopted dynamic constitutive model of the soil is based on the Davidenkov skeleton curve. The results demonstrate that the dynamic amplification factors (DAFs) strongly depend on wind speed and spatial position. Considerable values of the DAFs, ground acceleration, and ground velocity are observed, suggesting that the responses of the shallow foundation of a wind turbine are affected by dynamic wind loads. |
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| Keywords: | Dynamic responses Dynamic amplification factors Wind turbine Shallow foundation Random wind |
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