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Application of Modular Air-Tuned Damper System in High-Rise Buildings

 Application of Modular Air-Tuned Damper System in High-Rise Buildings
Author(s): , , , ,
Presented at IABSE Congress: The Evolving Metropolis, New York, NY, USA, 4-6 September 2019, published in , pp. 1198-1203
DOI: 10.2749/newyork.2019.1198
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High-rise buildings are progressively being designed and constructed in increasingly slender and complex shapes. Consequently, excessive wind-induced vibrations of these structures are a growing se...
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Bibliographic Details

Author(s): (Thornton Tomasetti)
(Thornton Tomasetti)
(Thornton Tomasetti)
(Thornton Tomasetti)
(Thornton Tomasetti)
Medium: conference paper
Language(s): English
Conference: IABSE Congress: The Evolving Metropolis, New York, NY, USA, 4-6 September 2019
Published in:
Page(s): 1198-1203 Total no. of pages: 6
Page(s): 1198-1203
Total no. of pages: 6
DOI: 10.2749/newyork.2019.1198
Abstract:

High-rise buildings are progressively being designed and constructed in increasingly slender and complex shapes. Consequently, excessive wind-induced vibrations of these structures are a growing serviceability concern due to their flexibility. Tuned mass dampers (TMDs) are regularly incorporated into high-rise buildings for mitigating excessive wind-induced vibrations. However, traditional TMDs are only effective over a narrow domain of frequencies, require an immense mass and occupy a significant volume of interior space. A novel modular air-tuned damper system was developed which is more cost-effective and flexible in distributing its mass throughout a building to make efficient use of unused space. Importantly, the air-tuned damper system is capable of being tuned across a broad domain of frequencies to more effectively alleviate wind-induced vibrations. This paper presents a case study demonstrating the performance of a high-rise building under 1- year and 10-year wind events whilst equipped with the air-tuned damper system. Dynamic analyses were performed for evaluating the reductions of the building’s lateral accelerations considering different air-tuned damper configurations. The performance of the building under the different damper configurations is discussed.

Keywords:
tuned mass damper wind-induced vibrations vibration mitigation air-tuned damper