Seismic performance of resilient self-centering bridge piers equipped with SMA bars
Seismic performance of resilient self-centering bridge piers equipped with SMA bars
This study examines the seismic behavior of precast post-tensioned segmental (PPS) bridge piers that are equipped with Shape Memory Alloy (SMA) bars. PPS piers are designed to minimize overall and localized damage to bridges by incorporating natural hinges and rocking mechanisms. The introduction of super-elastic SMA bars has the potential to enhance the use of PPS piers in high-seismic regions. A parametric study is conducted to identify piers with the highest energy dissipation capacity, which are then subjected to dynamic analysis. The aim is to assess the energy dissipation capability of these systems by subjecting the selected piers, both with and without SMA bars, to far-field ground motions using a Finite Element (FE) framework. The seismic performance of the piers is evaluated using Incremental Dynamic Analysis (IDA) curves, which are obtained from analyzing the piers under 44 far-fault ground motions. The IDA results indicate a significant reduction in the drift responses of the piers when SMA bars are utilized.
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Kocakaplan, Sedef
8dafcb6f-9cba-4fbc-9406-0bc4dcaf36ab
Ahmadi, Ehsan
9d05b3c0-aca1-4ed7-81fc-c7cd64d659f3
Kashani, Mohammad M.
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Kocakaplan, Sedef
8dafcb6f-9cba-4fbc-9406-0bc4dcaf36ab
Ahmadi, Ehsan
9d05b3c0-aca1-4ed7-81fc-c7cd64d659f3
Kashani, Mohammad M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Kocakaplan, Sedef, Ahmadi, Ehsan and Kashani, Mohammad M.
(2024)
Seismic performance of resilient self-centering bridge piers equipped with SMA bars.
Proceedings of the Institution of Civil Engineers - Bridge Engineering, .
(doi:10.1680/jbren.23.00027).
Abstract
This study examines the seismic behavior of precast post-tensioned segmental (PPS) bridge piers that are equipped with Shape Memory Alloy (SMA) bars. PPS piers are designed to minimize overall and localized damage to bridges by incorporating natural hinges and rocking mechanisms. The introduction of super-elastic SMA bars has the potential to enhance the use of PPS piers in high-seismic regions. A parametric study is conducted to identify piers with the highest energy dissipation capacity, which are then subjected to dynamic analysis. The aim is to assess the energy dissipation capability of these systems by subjecting the selected piers, both with and without SMA bars, to far-field ground motions using a Finite Element (FE) framework. The seismic performance of the piers is evaluated using Incremental Dynamic Analysis (IDA) curves, which are obtained from analyzing the piers under 44 far-fault ground motions. The IDA results indicate a significant reduction in the drift responses of the piers when SMA bars are utilized.
Text
Revised_ Manuscript
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Submitted date: 15 July 2023
Accepted/In Press date: February 2024
e-pub ahead of print date: 22 April 2024
Identifiers
Local EPrints ID: 489593
URI: http://eprints.soton.ac.uk/id/eprint/489593
ISSN: 1478-4637
PURE UUID: 084bc95f-edac-4635-b903-5bd717a69438
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Date deposited: 29 Apr 2024 16:42
Last modified: 30 Apr 2024 01:49
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Author:
Sedef Kocakaplan
Author:
Ehsan Ahmadi
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