Abstract
On-shore wind turbines are typically founded on shallow gravity-based foundations that are designed to transmit vertical and lateral loads. Improved understanding of the foundation, as well as the over-all system behavior will lead to safe and economical designs. In this study, experimental results of a 55 m in-service Gamesa G52/850 wind turbine tower are employed to calibrate a three-dimensional finite element model. The response of a G52/850 wind turbine founded on shallow foundations and subjected to seismic excitation is studied with due consideration of the role of soil-structure interaction. The numerical model accounts for the soil-structure interaction via a pressure dependent multi-yield surface soil constitutive model. The calibrated FE model is then used to investigate the response of the wind turbine under earthquake-like excitation. The fundamental mode shape, the dynamic response as well as the soil-structure interaction effect are reported and evaluated. The investigation provides a valuable insight into the extend that soil-structure interaction influences the behavior of the wind turbine tower under seismic excitation.
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Acknowledgement
The authors would like to express their gratitude to all the organizations, corporations, and individuals who contributed to this investigation. The research is funded by the US-Egypt Cooperative Research Project, entitled: “Seismic Risk Assessment of Wind Turbine Towers in Zafarana Wind Farm, Egypt” (NSF grant No. OISE 1445712).
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Zayed, M., Elgamal, A., Saudi, G., el-aal, A.ea.K.A., El-Zahaby, K. (2019). Response of A 850 KW Wind Turbine Including Soil-Structure Interaction During Seismic Excitation. In: Choudhury, D., El-Zahaby, K., Idriss, I. (eds) Dynamic Soil-Structure Interaction for Sustainable Infrastructures. GeoMEast 2018. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-030-01920-4_10
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DOI: https://doi.org/10.1007/978-3-030-01920-4_10
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