Details
| Original language | English |
|---|---|
| Article number | e1673 |
| Journal | Structural Design of Tall and Special Buildings |
| Volume | 28 |
| Issue number | 18 |
| Publication status | Published - 25 Dec 2019 |
| Externally published | Yes |
Abstract
The aim of the present study is to investigate the efficiency of the torsional tuned mass dampers (T-TMDs) in response control of asymmetric buildings under bidirectional earthquake ground excitations. The efficiency of the T-TMDs is compared with bidirectional tuned mass dampers (BTMDs). The T-TMDs are oriented to the rotation of the structures about vertical axis with a single torsional mass attached to spring–dashpot elements, whereas the BTMD connects a single mass to two orthogonal sets of spring–dashpot elements oriented to principal axes of the building. The buildings are idealized three-dimensional models with two translational and one torsional degrees of freedom for each floor. Three different configurations (cruciform-shaped, L-shaped, and T-shaped) of multistory buildings are considered. The 5-, 15-, and 20-story buildings with and without the tuned mass damper schemes are subjected to bidirectional earthquake ground excitation. In order to evaluate the effectiveness of the T-TMDs and BTMD, the rotation, displacement, acceleration, and base shear force responses are computed. Parametric studies are conducted for all the configurations installed with the T-TMDs and BTMD by varying their mass ratio, damping ratio, and ground motions. It is concluded that the T-TMDs are more effective in mitigating the torsional response of asymmetric buildings as compared with the BTMD.
Keywords
- asymmetric buildings, earthquake, tuned mass dampers
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Architecture
- Engineering(all)
- Building and Construction
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In: Structural Design of Tall and Special Buildings, Vol. 28, No. 18, e1673, 25.12.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Seismic response control of asymmetric buildings using tuned mass dampers
AU - Taha, Ahmad Edris
AU - Elias, Said
AU - Matsagar, Vasant
AU - Jain, Arvind Kumar
N1 - Publisher Copyright: © 2019 John Wiley & Sons, Ltd.
PY - 2019/12/25
Y1 - 2019/12/25
N2 - The aim of the present study is to investigate the efficiency of the torsional tuned mass dampers (T-TMDs) in response control of asymmetric buildings under bidirectional earthquake ground excitations. The efficiency of the T-TMDs is compared with bidirectional tuned mass dampers (BTMDs). The T-TMDs are oriented to the rotation of the structures about vertical axis with a single torsional mass attached to spring–dashpot elements, whereas the BTMD connects a single mass to two orthogonal sets of spring–dashpot elements oriented to principal axes of the building. The buildings are idealized three-dimensional models with two translational and one torsional degrees of freedom for each floor. Three different configurations (cruciform-shaped, L-shaped, and T-shaped) of multistory buildings are considered. The 5-, 15-, and 20-story buildings with and without the tuned mass damper schemes are subjected to bidirectional earthquake ground excitation. In order to evaluate the effectiveness of the T-TMDs and BTMD, the rotation, displacement, acceleration, and base shear force responses are computed. Parametric studies are conducted for all the configurations installed with the T-TMDs and BTMD by varying their mass ratio, damping ratio, and ground motions. It is concluded that the T-TMDs are more effective in mitigating the torsional response of asymmetric buildings as compared with the BTMD.
AB - The aim of the present study is to investigate the efficiency of the torsional tuned mass dampers (T-TMDs) in response control of asymmetric buildings under bidirectional earthquake ground excitations. The efficiency of the T-TMDs is compared with bidirectional tuned mass dampers (BTMDs). The T-TMDs are oriented to the rotation of the structures about vertical axis with a single torsional mass attached to spring–dashpot elements, whereas the BTMD connects a single mass to two orthogonal sets of spring–dashpot elements oriented to principal axes of the building. The buildings are idealized three-dimensional models with two translational and one torsional degrees of freedom for each floor. Three different configurations (cruciform-shaped, L-shaped, and T-shaped) of multistory buildings are considered. The 5-, 15-, and 20-story buildings with and without the tuned mass damper schemes are subjected to bidirectional earthquake ground excitation. In order to evaluate the effectiveness of the T-TMDs and BTMD, the rotation, displacement, acceleration, and base shear force responses are computed. Parametric studies are conducted for all the configurations installed with the T-TMDs and BTMD by varying their mass ratio, damping ratio, and ground motions. It is concluded that the T-TMDs are more effective in mitigating the torsional response of asymmetric buildings as compared with the BTMD.
KW - asymmetric buildings
KW - earthquake
KW - tuned mass dampers
UR - http://www.scopus.com/inward/record.url?scp=85072230410&partnerID=8YFLogxK
U2 - 10.1002/tal.1673
DO - 10.1002/tal.1673
M3 - Article
AN - SCOPUS:85072230410
VL - 28
JO - Structural Design of Tall and Special Buildings
JF - Structural Design of Tall and Special Buildings
SN - 1541-7794
IS - 18
M1 - e1673
ER -