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Wind and Structures Volume 32, Number 2, February 2021 , pages 143-159 DOI: https://doi.org/10.12989/was.2021.32.2.143 |
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Field measurement-based wind-induced response analysis of multi-tower building with tuned mass damper |
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Xin Chen, Zhiqiang Zhang, Aiqun Li, Liang Hu, Xianming Liu, Zhong Fan and Peng Sun
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| Abstract | ||
| The 246.8-m-tall Beijing Olympic Tower (BOT) is a new landmark in Beijing City, China. Its unique architectural style with five sub-towers and a large tower crown gives rise to complex dynamic characteristics. Thus, it is wind-sensitive, and a double-stage pendulum tuned mass damper (DPTMD) has been installed for vibration mitigation. In this study, a finite-element analysis of the wind-induced responses of the tower based on full-scale measurement results was performed. First, the structure of the BOT and the full-scale measurement are introduced. According to the measured dynamic characteristics of the BOT, such as the natural frequencies, modal shapes, and damping ratios, an accurate finite-element model (FEM) was established and updated. On the basis of wind measurements, as well as wind-tunnel test results, the wind load on the model was calculated. Then, the wind-induced responses of the BOT with the DPTMD were obtained and compared with the measured responses to assess the numerical wind-induced response analysis method. Finally, the wind-induced serviceability of the BOT was evaluated according to the field measurement results for the wind-induced response and was found to be satisfactory for human comfort. | ||
| Key Words | ||
| high-rise building; multi-tower building; full-scale measurement; structural dynamic property; wind-induced responses; tuned mass damper | ||
| Address | ||
| Xin Chen:Jiangsu Province Key Laboratory of Structure Engineering, Suzhou University of Science and Technology,1701 Binhe Road, Suzhou, P.R. China Zhiqiang Zhang:School of Civil Engineering, Southeast University, 2 Sipailou, Nanjing, P.R. China | ||