Modelling nonlinear dynamic behaviour of rocking bridge piers with shape memory alloys: Modelling nonlinear dynamic behaviour of rocking bridge piers with shape memory alloys
Modelling nonlinear dynamic behaviour of rocking bridge piers with shape memory alloys: Modelling nonlinear dynamic behaviour of rocking bridge piers with shape memory alloys
In recent years, accelerated bridge construction (ABC) has led to substantial application of precast post-tensioned segmental (PPS) bridge piers. However, PPS piers are not widely used in high-seismicity regions due to their low energy-dissipation capacity. To address this deficiency, this research work examines a series of Shape Memory Alloy (SMA) concrete composite PPS piers. Nonlinear static and dynamic analyses are performed on experimentally validated Finite Element (FE) models of the SMA concrete composite piers, and the results are compared with those without SMA bars. It is found that length, area, and post-tensioning ratio of the SMA bars affect the energy dissipation capacity of the piers, and an optimal design of the bars is required to reach the highest energy dissipation possible. The effects of the SMA bars on the frequency response functions of the piers are investigated for the first time in this study, and it is shown that, unlike the piers without SMA bars, the sub-harmonics and super-harmonics are not seen in the response of the SMA concrete composite piers, mainly for the drift responses. Further, the SMA concrete composite piers experience a significant reduction in the drift responses compared to those without SMA.
Bridge, composite bridge piers, post-tensioned, segmental, self-centring, shape memory alloy
Kocakaplan, Sedef
8dafcb6f-9cba-4fbc-9406-0bc4dcaf36ab
Ahmadi, Ehsan
f1994ae0-2b3e-43c9-a595-032e801aae70
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
13 June 2023
Kocakaplan, Sedef
8dafcb6f-9cba-4fbc-9406-0bc4dcaf36ab
Ahmadi, Ehsan
f1994ae0-2b3e-43c9-a595-032e801aae70
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Kocakaplan, Sedef, Ahmadi, Ehsan and Kashani, Mohammad
(2023)
Modelling nonlinear dynamic behaviour of rocking bridge piers with shape memory alloys: Modelling nonlinear dynamic behaviour of rocking bridge piers with shape memory alloys.
Proceedings of the Institution of Civil Engineers - Structures and Buildings.
(doi:10.1680/jstbu.22.00219).
Abstract
In recent years, accelerated bridge construction (ABC) has led to substantial application of precast post-tensioned segmental (PPS) bridge piers. However, PPS piers are not widely used in high-seismicity regions due to their low energy-dissipation capacity. To address this deficiency, this research work examines a series of Shape Memory Alloy (SMA) concrete composite PPS piers. Nonlinear static and dynamic analyses are performed on experimentally validated Finite Element (FE) models of the SMA concrete composite piers, and the results are compared with those without SMA bars. It is found that length, area, and post-tensioning ratio of the SMA bars affect the energy dissipation capacity of the piers, and an optimal design of the bars is required to reach the highest energy dissipation possible. The effects of the SMA bars on the frequency response functions of the piers are investigated for the first time in this study, and it is shown that, unlike the piers without SMA bars, the sub-harmonics and super-harmonics are not seen in the response of the SMA concrete composite piers, mainly for the drift responses. Further, the SMA concrete composite piers experience a significant reduction in the drift responses compared to those without SMA.
Text
jstbu.22.00219
- Accepted Manuscript
More information
Accepted/In Press date: 10 May 2023
e-pub ahead of print date: 13 June 2023
Published date: 13 June 2023
Additional Information:
Acknowledgement
The authors acknowledge the support received by the UK Engineering and Physical Sciences Research Council (EPSRC) for a Prosperous Nation [grant number EP/R039178/1]: SPINE: Resilience-Based Design of Biologically Inspired Columns for Next-Generation Accelerated Bridge Construction].
Keywords:
Bridge, composite bridge piers, post-tensioned, segmental, self-centring, shape memory alloy
Identifiers
Local EPrints ID: 477375
URI: http://eprints.soton.ac.uk/id/eprint/477375
ISSN: 0965-0911
PURE UUID: 766b86b0-5d81-4644-92d3-b80280234b1b
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Date deposited: 05 Jun 2023 16:48
Last modified: 17 Mar 2024 03:46
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Author:
Sedef Kocakaplan
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