Details
| Original language | English |
|---|---|
| Pages (from-to) | 217-234 |
| Number of pages | 18 |
| Journal | Proceedings of the Institution of Civil Engineers: Structures and Buildings |
| Volume | 173 |
| Issue number | 3 |
| Publication status | Published - 1 Mar 2020 |
| Externally published | Yes |
Abstract
The effectiveness of distributed multiple tuned mass dampers (d-MTMDs) in seismic response control of bridges was investigated. Numerical models were developed for evaluating the seismic response of concrete and steel truss bridges without and with tuned mass damper(s) (TMD(s)) installed. The modal frequencies and mode shapes of the uncontrolled and controlled bridges were used for suitable design and placement of the TMDs. Two horizontal components of earthquakes were simultaneously applied while duly considering the bi-directional interaction of the seismic response. The seismic response of the bridges was evaluated when all multiple tuned mass dampers (MTMDs) were installed at mid-span and when d-MTMDs were installed as per the modal properties. Coupled differential equations of motion of the bridges subjected to the bi-directional earthquake ground motions were derived and solved using the modified modal superposition method. Variations in pier base shear, support reaction, deck displacement and deck acceleration under real earthquake ground motions were computed to study the effectiveness of installing MTMDs and d-MTMDs. The results showed that d-MTMDs installed as per the modal properties of the bridges are effective in reducing the maximum pier base shear, support reaction, deck displacement and deck acceleration in both the longitudinal and transverse directions.
Keywords
- Bridges, Dynamics, Seismic engineering
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
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In: Proceedings of the Institution of Civil Engineers: Structures and Buildings, Vol. 173, No. 3, 01.03.2020, p. 217-234.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Distributed multiple tuned mass dampers for seismic response control in bridges
AU - Matin, Abdul
AU - Elias, Said
AU - Matsagar, Vasant
N1 - Publisher Copyright: © 2020 ICE Publishing. All rights reserved.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - The effectiveness of distributed multiple tuned mass dampers (d-MTMDs) in seismic response control of bridges was investigated. Numerical models were developed for evaluating the seismic response of concrete and steel truss bridges without and with tuned mass damper(s) (TMD(s)) installed. The modal frequencies and mode shapes of the uncontrolled and controlled bridges were used for suitable design and placement of the TMDs. Two horizontal components of earthquakes were simultaneously applied while duly considering the bi-directional interaction of the seismic response. The seismic response of the bridges was evaluated when all multiple tuned mass dampers (MTMDs) were installed at mid-span and when d-MTMDs were installed as per the modal properties. Coupled differential equations of motion of the bridges subjected to the bi-directional earthquake ground motions were derived and solved using the modified modal superposition method. Variations in pier base shear, support reaction, deck displacement and deck acceleration under real earthquake ground motions were computed to study the effectiveness of installing MTMDs and d-MTMDs. The results showed that d-MTMDs installed as per the modal properties of the bridges are effective in reducing the maximum pier base shear, support reaction, deck displacement and deck acceleration in both the longitudinal and transverse directions.
AB - The effectiveness of distributed multiple tuned mass dampers (d-MTMDs) in seismic response control of bridges was investigated. Numerical models were developed for evaluating the seismic response of concrete and steel truss bridges without and with tuned mass damper(s) (TMD(s)) installed. The modal frequencies and mode shapes of the uncontrolled and controlled bridges were used for suitable design and placement of the TMDs. Two horizontal components of earthquakes were simultaneously applied while duly considering the bi-directional interaction of the seismic response. The seismic response of the bridges was evaluated when all multiple tuned mass dampers (MTMDs) were installed at mid-span and when d-MTMDs were installed as per the modal properties. Coupled differential equations of motion of the bridges subjected to the bi-directional earthquake ground motions were derived and solved using the modified modal superposition method. Variations in pier base shear, support reaction, deck displacement and deck acceleration under real earthquake ground motions were computed to study the effectiveness of installing MTMDs and d-MTMDs. The results showed that d-MTMDs installed as per the modal properties of the bridges are effective in reducing the maximum pier base shear, support reaction, deck displacement and deck acceleration in both the longitudinal and transverse directions.
KW - Bridges
KW - Dynamics
KW - Seismic engineering
UR - http://www.scopus.com/inward/record.url?scp=85068980295&partnerID=8YFLogxK
U2 - 10.1680/jstbu.18.00067
DO - 10.1680/jstbu.18.00067
M3 - Article
AN - SCOPUS:85068980295
VL - 173
SP - 217
EP - 234
JO - Proceedings of the Institution of Civil Engineers: Structures and Buildings
JF - Proceedings of the Institution of Civil Engineers: Structures and Buildings
SN - 0965-0911
IS - 3
ER -