Buckling-enabled composite bracing for damage-avoidance rocking structures
Buckling-enabled composite bracing for damage-avoidance rocking structures
Post-tensioned rocking frames have been proposed as damage-free seismic-resistant structures. However, currently available load resisting systems for rocking frames rely on sacrificial yielding components that accumulate damage during strong dynamic action. To address this shortcoming, this study proposes a novel thoroughly damage-avoidance solution by means of bracing elements with carefully controlled buckling behaviour. To this end, a proof-of-concept study is presented, whereby the elastic buckling response of buckling-enabled composite bracing (BECB) elements with circular-arc shaped cross-section is numerically investigated. Varying geometric properties are considered and validated against analytical approximations. Besides, a finite element study of a single-storey steel post-tensioned frame under static and dynamic actions is performed. The case study incorporates BECB elements made from glass-fibre reinforced polymer (GFRP). It is demonstrated that BECB enhances the non-linear static and dynamic response of rocking frames by providing stability and significantly reducing storey drifts and accelerations without accumulating damage.
Buckling-enabled bracing, Damage-avoidance, Fibre reinforced polymer, Finite-element, Non-linear dynamics, Rocking frame
1-11
Kibriya, Leena
574483a6-58b0-48c6-a370-e805bbd65abe
Málaga-Chuquitaype, Christian
8aafba9a-7b97-4a30-a2d2-351f4877c665
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
15 March 2020
Kibriya, Leena
574483a6-58b0-48c6-a370-e805bbd65abe
Málaga-Chuquitaype, Christian
8aafba9a-7b97-4a30-a2d2-351f4877c665
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Kibriya, Leena, Málaga-Chuquitaype, Christian and Kashani, Mohammad
(2020)
Buckling-enabled composite bracing for damage-avoidance rocking structures.
International Journal of Mechanical Sciences, 170, , [105359].
(doi:10.1016/j.ijmecsci.2019.105359).
Abstract
Post-tensioned rocking frames have been proposed as damage-free seismic-resistant structures. However, currently available load resisting systems for rocking frames rely on sacrificial yielding components that accumulate damage during strong dynamic action. To address this shortcoming, this study proposes a novel thoroughly damage-avoidance solution by means of bracing elements with carefully controlled buckling behaviour. To this end, a proof-of-concept study is presented, whereby the elastic buckling response of buckling-enabled composite bracing (BECB) elements with circular-arc shaped cross-section is numerically investigated. Varying geometric properties are considered and validated against analytical approximations. Besides, a finite element study of a single-storey steel post-tensioned frame under static and dynamic actions is performed. The case study incorporates BECB elements made from glass-fibre reinforced polymer (GFRP). It is demonstrated that BECB enhances the non-linear static and dynamic response of rocking frames by providing stability and significantly reducing storey drifts and accelerations without accumulating damage.
Text
1-s2.0-S0020740319318338-main
- Accepted Manuscript
More information
Accepted/In Press date: 6 December 2019
e-pub ahead of print date: 7 December 2019
Published date: 15 March 2020
Keywords:
Buckling-enabled bracing, Damage-avoidance, Fibre reinforced polymer, Finite-element, Non-linear dynamics, Rocking frame
Identifiers
Local EPrints ID: 436561
URI: http://eprints.soton.ac.uk/id/eprint/436561
ISSN: 0020-7403
PURE UUID: a4bcd24a-5736-4e97-852c-47a1947e669f
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Date deposited: 13 Dec 2019 17:30
Last modified: 17 Mar 2024 05:08
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Contributors
Author:
Leena Kibriya
Author:
Christian Málaga-Chuquitaype
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