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Testing and numerical modelling of circular stainless steel reinforced concrete columns

Testing and numerical modelling of circular stainless steel reinforced concrete columns
Testing and numerical modelling of circular stainless steel reinforced concrete columns
Chloride-induced corrosion of carbon steel reinforcing bars is considered the primary cause of deterioration of reinforced concrete (RC) structures. Stainless steel rebars have gained increasing attention in recent years as a promising alternative to the traditional carbon steel rebars to overcome the problem of chloride-induced reinforcement corrosion in RC structures. This paper presents the results of a new experimental testing program on two circular RC columns, subjected to lateral cyclic loading, reinforced with two different stainless steel reinforcing bar grades: austenitic EN 1.4301 and duplex EN 1.4362. A third RC column reinforced with carbon steel reinforcing bar was tested as a control specimen. The resultant force-displacement relationships, damage, energy dissipation, secant stiffness, and moment-curvature relationships from digital image correlation (DIC) are presented and discussed. Finally, an advanced OpenSees finite element model, validated against the conducted tests, for simulating the cyclic response of RC columns is presented.
Circular column, Cyclic loading, Experimentation, OpenSees modelling, Reinforcing bar, Stainless steel
0141-0296
117607
Moodley, H.
bb41e7c0-232b-49be-8d8f-a77d0890e2e3
Afshan, S.
68dcdcac-c2aa-4c09-951c-da4992e72086
Crump, D.
5fa2d636-89bc-4005-a948-32554ef3d951
Kashani, M.M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Moodley, H.
bb41e7c0-232b-49be-8d8f-a77d0890e2e3
Afshan, S.
68dcdcac-c2aa-4c09-951c-da4992e72086
Crump, D.
5fa2d636-89bc-4005-a948-32554ef3d951
Kashani, M.M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d

Moodley, H., Afshan, S., Crump, D. and Kashani, M.M. (2024) Testing and numerical modelling of circular stainless steel reinforced concrete columns. Engineering Structures, 304, 117607, [117607]. (doi:10.1016/j.engstruct.2024.117607).

Record type: Article

Abstract

Chloride-induced corrosion of carbon steel reinforcing bars is considered the primary cause of deterioration of reinforced concrete (RC) structures. Stainless steel rebars have gained increasing attention in recent years as a promising alternative to the traditional carbon steel rebars to overcome the problem of chloride-induced reinforcement corrosion in RC structures. This paper presents the results of a new experimental testing program on two circular RC columns, subjected to lateral cyclic loading, reinforced with two different stainless steel reinforcing bar grades: austenitic EN 1.4301 and duplex EN 1.4362. A third RC column reinforced with carbon steel reinforcing bar was tested as a control specimen. The resultant force-displacement relationships, damage, energy dissipation, secant stiffness, and moment-curvature relationships from digital image correlation (DIC) are presented and discussed. Finally, an advanced OpenSees finite element model, validated against the conducted tests, for simulating the cyclic response of RC columns is presented.

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Accepted/In Press date: 30 January 2024
e-pub ahead of print date: 13 February 2024
Published date: 13 February 2024
Additional Information: Funding information: The authors thank Network Rail for their professional and financial support of this research. Furthermore, the authors acknowledge the support received by the UK Engineering and Physical Sciences Research Council (EPSRC) for funding the experimental programme under the grant number EP/R039178/1. The experiments were conducted in the Large Structures Testing Laboratory (LSTL), which is part of the UKCRIC National Infrastructure Laboratory (NIL), based at the University of Southampton. The help of Andrew Morgan, LSTL Technician, in settingup the experiment is gratefully acknowledged. Publisher Copyright: © 2024 The Authors
Keywords: Circular column, Cyclic loading, Experimentation, OpenSees modelling, Reinforcing bar, Stainless steel

Identifiers

Local EPrints ID: 487493
URI: http://eprints.soton.ac.uk/id/eprint/487493
DOI: doi:10.1016/j.engstruct.2024.117607
ISSN: 0141-0296
PURE UUID: 6d69d94e-c774-4912-a54b-f3983a0503c5
ORCID for S. Afshan: ORCID iD orcid.org/0000-0003-1048-2931
ORCID for M.M. Kashani: ORCID iD orcid.org/0000-0003-0008-0007

Catalogue record

Date deposited: 21 Feb 2024 17:43
Last modified: 20 Apr 2024 02:07

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Contributors

Author: H. Moodley
Author: S. Afshan ORCID iD
Author: D. Crump
Author: M.M. Kashani ORCID iD

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