Effectiveness of tuned mass dampers in seismic response control of isolated bridges including soil-structure interaction

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  • Indian Institute of Technology Delhi (IITD)
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Details

OriginalspracheEnglisch
Seiten (von - bis)2324-2341
Seitenumfang18
FachzeitschriftLatin American Journal of Solids and Structures
Jahrgang14
Ausgabenummer13
PublikationsstatusVeröffentlicht - 2017
Extern publiziertJa

Abstract

The effect of soil-structure interaction (SSI) on the dynamic responses of seismically isolated three-span continuous reinforced concrete (RC) bridge is investigated. Also, tuned mass damper(s) (TMD/s) is/are installed to control undesirable bearing displacement, even under the SSI effect. The TMDs are placed at the mid-span of the bridge and each tuned with a modal frequency, while controlling up to first few modes as desirable. The soil surrounding the foundation of pier is modeled by frequency independent coefficients. Dynamic analysis is carried out in time domain using direct integration method. In order to specify the effects of the SSI, the responses of the non-isolated, isolated, and controlled isolated bridge are compared. It is observed that the soil surrounding the pier has significant effects on the bearing displacement of the isolated RC bridges. In addition, it is observed that the seismic responses of isolated RC bridge reduced significantly with installation of the TMDs.

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Effectiveness of tuned mass dampers in seismic response control of isolated bridges including soil-structure interaction. / Elias, Said; Matsagar, Vasant.
in: Latin American Journal of Solids and Structures, Jahrgang 14, Nr. 13, 2017, S. 2324-2341.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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title = "Effectiveness of tuned mass dampers in seismic response control of isolated bridges including soil-structure interaction",
abstract = "The effect of soil-structure interaction (SSI) on the dynamic responses of seismically isolated three-span continuous reinforced concrete (RC) bridge is investigated. Also, tuned mass damper(s) (TMD/s) is/are installed to control undesirable bearing displacement, even under the SSI effect. The TMDs are placed at the mid-span of the bridge and each tuned with a modal frequency, while controlling up to first few modes as desirable. The soil surrounding the foundation of pier is modeled by frequency independent coefficients. Dynamic analysis is carried out in time domain using direct integration method. In order to specify the effects of the SSI, the responses of the non-isolated, isolated, and controlled isolated bridge are compared. It is observed that the soil surrounding the pier has significant effects on the bearing displacement of the isolated RC bridges. In addition, it is observed that the seismic responses of isolated RC bridge reduced significantly with installation of the TMDs.",
keywords = "Earthquake, Isolated bridge, Reinforced concrete (RC), SSI, TMD, Tuned mass damper",
author = "Said Elias and Vasant Matsagar",
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AU - Elias, Said

AU - Matsagar, Vasant

N1 - Publisher Copyright: © 2017, Brazilian Association of Computational Mechanics. All rights reserved.

PY - 2017

Y1 - 2017

N2 - The effect of soil-structure interaction (SSI) on the dynamic responses of seismically isolated three-span continuous reinforced concrete (RC) bridge is investigated. Also, tuned mass damper(s) (TMD/s) is/are installed to control undesirable bearing displacement, even under the SSI effect. The TMDs are placed at the mid-span of the bridge and each tuned with a modal frequency, while controlling up to first few modes as desirable. The soil surrounding the foundation of pier is modeled by frequency independent coefficients. Dynamic analysis is carried out in time domain using direct integration method. In order to specify the effects of the SSI, the responses of the non-isolated, isolated, and controlled isolated bridge are compared. It is observed that the soil surrounding the pier has significant effects on the bearing displacement of the isolated RC bridges. In addition, it is observed that the seismic responses of isolated RC bridge reduced significantly with installation of the TMDs.

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KW - Earthquake

KW - Isolated bridge

KW - Reinforced concrete (RC)

KW - SSI

KW - TMD

KW - Tuned mass damper

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