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Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity

Background: Tuned liquid dampers (TLDs) have been successfully installed on different types of structures for vibration mitigation against wind or earthquake forces. However, the effectiveness of TLDs in mitigating the dynamic responses of buildings with large mass eccentricity has not been well inv...

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Main Authors: Teh, Kun Jie, Vafaei, Mohammadreza, Alih, Sophia C., Shad, Hossein
Format: Article
Published: Springer Nature 2024
Subjects:
TA Engineering (General). Civil engineering (General)
TH Building construction
Online Access:http://eprints.utm.my/108996/
http://dx.doi.org/10.1007/s42417-023-00999-1
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spelling my.utm.1089962025-01-22T04:46:06Z http://eprints.utm.my/108996/ Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity Teh, Kun Jie Vafaei, Mohammadreza Alih, Sophia C. Shad, Hossein TA Engineering (General). Civil engineering (General) TH Building construction Background: Tuned liquid dampers (TLDs) have been successfully installed on different types of structures for vibration mitigation against wind or earthquake forces. However, the effectiveness of TLDs in mitigating the dynamic responses of buildings with large mass eccentricity has not been well investigated. Method: In this study, a scaled-down one-bay 3-story structure with a 1 m span length and a total height of 2.65 m was constructed and subjected to free vibration and harmonic excitations. TLDs with mass ratios ranging from 1 to 5% were installed on the roof of the building. Moreover, to impose in-plane torsional moments to the reference structure, the location of floors’ mass was shifted 0.15 m and 0.3 m away from the geometric centroid. The peak displacement and acceleration responses (PDR and PAR) were measured at the roof level of the reference structure with and without the effect of the torsional moment. Results: The obtained results indicated that, at the resonance frequency (RF), TLDs could successfully mitigate the PDRs and PARs even at the presence of torsional moments. Moreover, TLDs reduced the PDRs more than the PARs. Besides, an increase in the mass ratio up to 5% enhanced the effectiveness of TLDs in reducing the peak responses. Springer Nature 2024-02 Article PeerReviewed Teh, Kun Jie and Vafaei, Mohammadreza and Alih, Sophia C. and Shad, Hossein (2024) Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity. Journal of Vibration Engineering and Technologies, 12 (NA). pp. 2559-2570. ISSN 2523-3920 http://dx.doi.org/10.1007/s42417-023-00999-1 DOI:10.1007/s42417-023-00999-1
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TA Engineering (General). Civil engineering (General)
TH Building construction
spellingShingle TA Engineering (General). Civil engineering (General)
TH Building construction
Teh, Kun Jie
Vafaei, Mohammadreza
Alih, Sophia C.
Shad, Hossein
Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity
description Background: Tuned liquid dampers (TLDs) have been successfully installed on different types of structures for vibration mitigation against wind or earthquake forces. However, the effectiveness of TLDs in mitigating the dynamic responses of buildings with large mass eccentricity has not been well investigated. Method: In this study, a scaled-down one-bay 3-story structure with a 1 m span length and a total height of 2.65 m was constructed and subjected to free vibration and harmonic excitations. TLDs with mass ratios ranging from 1 to 5% were installed on the roof of the building. Moreover, to impose in-plane torsional moments to the reference structure, the location of floors’ mass was shifted 0.15 m and 0.3 m away from the geometric centroid. The peak displacement and acceleration responses (PDR and PAR) were measured at the roof level of the reference structure with and without the effect of the torsional moment. Results: The obtained results indicated that, at the resonance frequency (RF), TLDs could successfully mitigate the PDRs and PARs even at the presence of torsional moments. Moreover, TLDs reduced the PDRs more than the PARs. Besides, an increase in the mass ratio up to 5% enhanced the effectiveness of TLDs in reducing the peak responses.
format Article
author Teh, Kun Jie
Vafaei, Mohammadreza
Alih, Sophia C.
Shad, Hossein
author_facet Teh, Kun Jie
Vafaei, Mohammadreza
Alih, Sophia C.
Shad, Hossein
author_sort Teh, Kun Jie
title Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity
title_short Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity
title_full Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity
title_fullStr Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity
title_full_unstemmed Efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity
title_sort efficiency of tuned liquid dampers in mitigating vibrations of structures with mass eccentricity
publisher Springer Nature
publishDate 2024
url http://eprints.utm.my/108996/
http://dx.doi.org/10.1007/s42417-023-00999-1
_version_ 1827439196990603264
score 13.251813

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