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Wind and Structures Volume 27, Number 4, October 2018 , pages 223-234 DOI: https://doi.org/10.12989/was.2018.27.4.223 |
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Wind-induced responses of supertall buildings considering soil-structure interaction |
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Yajun Huang and Ming Gu
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| Abstract | ||
| In this study, a simplified three-dimensional calculation model is developed for the dynamic analysis of soil-pile group-supertall building systems excited by wind loads using the substructure method. Wind loads acting on a 300-m building in different wind directions and terrain conditions are obtained from synchronous pressure measurements conducted in a wind tunnel. The effects of soil-structure interaction (SSI) on the first natural frequency, wind-induced static displacement, root mean square (RMS) of displacement, and RMS of acceleration at the top of supertall buildings are analyzed. The findings demonstrate that with decreasing soil shear wave velocity, the first natural frequency decreases and the static displacement, RMS of displacement and RMS of acceleration increase. In addition, as soil material damping decreases, the RMS of displacement and the RMS of acceleration increase. | ||
| Key Words | ||
| soil-structure interaction; dynamic responses; wind load; supertall building; pile group | ||
| Address | ||
| Yajun Huang and Ming Gu: State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, 1239 Siping Road, Shanghai, China | ||