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Smart Structures and Systems Volume 33, Number 1, January 2024 , pages 27-39 DOI: https://doi.org/10.12989/sss.2024.33.1.027 |
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Serviceability-oriented analytical design of isolated liquid damper for the wind-induced vibration control of high-rise buildings |
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Zhipeng Zhao, Xiuyan Hu, Cong Liao, Na Hong and Yuanchen Tang
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| Abstract | ||
| The effectiveness of conventional tuned liquid dampers (TLDs) in controlling the wind-induced response of tall flexible structures has been indicated. However, the impaired control effect in the detuning condition or a considerably high mass cost of liquid may be incurred in ensuring the high-level serviceability. To provide an efficient TLD-based solution for wind-induced vibration control, this study proposes a serviceability-oriented optimal design method for isolated TLDs (ILDs) and derives analytical design formulae. The ILD is implemented by mounting the TLD on the linear isolators. Stochastic response analysis is performed for the ILD-equipped structure subjected to stochastic wind and white noise, and the results are considered to derive the closed-form responses. Correspondingly, an extensive parametric analysis is conducted to clarify a serviceability-oriented optimal design framework by incorporating the comfort demand. The obtained results show that the highlevel serviceability demand can be satisfied by the ILD based on the proposed optimal design framework. Analytical design formulae can be preliminarily adopted to ensure the target serviceability demand while enhancing the structural displacement performance to increase the safety level. Compared with conventional TLD systems, the ILD exhibits higher effectiveness and a larger frequency bandwidth for wind-induced vibration control at a small mass ratio. | ||
| Key Words | ||
| analytical design; isolation; serviceability; tuned liquid damper; wind loads | ||
| Address | ||
| (1) Xiuyan Hu: School of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai 201418, China; (2) Zhipeng Zhao, Cong Liao, Yuanchen Tang: Department of Disaster Mitigation for Structures, Tongji University, Shanghai 200092, China; (3) Na Hong: Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, China. | ||