Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression

Carbon fiber jacketing is an efficient technique for increasing the strength and strain capacity of concrete circular and square section columns subjected to axial load, although confinement efficiency decreases for rectangular cross-section members. The research project BIA 2016-80310-P includes a...

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Autores principales:	J.P. Gutiérrez, S. Martínez, A. de Diego, V.J. Castro, L. Echevarría
Formato:	article
Lenguaje:	EN ES
Publicado:	Consejo Superior de Investigaciones Científicas 2021
Materias:	Concrete Composite materials Compressive strength Confinement Structural strengthening Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/caafb7f84d654d9dba9cc9c62b38fb5d
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spelling	oai:doaj.org-article:caafb7f84d654d9dba9cc9c62b38fb5d2021-12-01T14:08:09ZExperimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression10.3989/mc.2021.115210465-27461988-3226https://doaj.org/article/caafb7f84d654d9dba9cc9c62b38fb5d2021-11-01T00:00:00Zhttps://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2338https://doaj.org/toc/0465-2746https://doaj.org/toc/1988-3226 Carbon fiber jacketing is an efficient technique for increasing the strength and strain capacity of concrete circular and square section columns subjected to axial load, although confinement efficiency decreases for rectangular cross-section members. The research project BIA 2016-80310-P includes an experimental program on intermediate-size plain concrete specimens strengthened with carbon fiber jackets, mostly with square and rectangular cross-sections. The results, alongside others with similar characteristics from two databases published, are compared to predictions of four international guides. The incidence of the key parameters in the experimental results is analyzed, such as the aspect ratio of the section, the effective strain in FRP jacket attained at failure or the rounded corner radius. As a result, two efficiency strain factors are proposed, one for circular and another for rectangular specimens. The predictions contained in certain guides, based on a simple linear design-model, are improved by using the proposed efficiency strain factor for rectangular sections. J.P. GutiérrezS. MartínezA. de DiegoV.J. CastroL. EchevarríaConsejo Superior de Investigaciones CientíficasarticleConcreteComposite materialsCompressive strengthConfinementStructural strengtheningMaterials of engineering and construction. Mechanics of materialsTA401-492ENESMateriales de Construccion, Vol 71, Iss 344 (2021)
institution	DOAJ
collection	DOAJ
language	EN ES
topic	Concrete Composite materials Compressive strength Confinement Structural strengthening Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Concrete Composite materials Compressive strength Confinement Structural strengthening Materials of engineering and construction. Mechanics of materials TA401-492 J.P. Gutiérrez S. Martínez A. de Diego V.J. Castro L. Echevarría Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression
description	Carbon fiber jacketing is an efficient technique for increasing the strength and strain capacity of concrete circular and square section columns subjected to axial load, although confinement efficiency decreases for rectangular cross-section members. The research project BIA 2016-80310-P includes an experimental program on intermediate-size plain concrete specimens strengthened with carbon fiber jackets, mostly with square and rectangular cross-sections. The results, alongside others with similar characteristics from two databases published, are compared to predictions of four international guides. The incidence of the key parameters in the experimental results is analyzed, such as the aspect ratio of the section, the effective strain in FRP jacket attained at failure or the rounded corner radius. As a result, two efficiency strain factors are proposed, one for circular and another for rectangular specimens. The predictions contained in certain guides, based on a simple linear design-model, are improved by using the proposed efficiency strain factor for rectangular sections.
format	article
author	J.P. Gutiérrez S. Martínez A. de Diego V.J. Castro L. Echevarría
author_facet	J.P. Gutiérrez S. Martínez A. de Diego V.J. Castro L. Echevarría
author_sort	J.P. Gutiérrez
title	Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression
title_short	Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression
title_full	Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression
title_fullStr	Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression
title_full_unstemmed	Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression
title_sort	experimental analysis and design strength models adopted by international guides for frp-confined concrete columns subjected to axial compression
publisher	Consejo Superior de Investigaciones Científicas
publishDate	2021
url	https://doaj.org/article/caafb7f84d654d9dba9cc9c62b38fb5d
work_keys_str_mv	AT jpgutierrez experimentalanalysisanddesignstrengthmodelsadoptedbyinternationalguidesforfrpconfinedconcretecolumnssubjectedtoaxialcompression AT smartinez experimentalanalysisanddesignstrengthmodelsadoptedbyinternationalguidesforfrpconfinedconcretecolumnssubjectedtoaxialcompression AT adediego experimentalanalysisanddesignstrengthmodelsadoptedbyinternationalguidesforfrpconfinedconcretecolumnssubjectedtoaxialcompression AT vjcastro experimentalanalysisanddesignstrengthmodelsadoptedbyinternationalguidesforfrpconfinedconcretecolumnssubjectedtoaxialcompression AT lechevarria experimentalanalysisanddesignstrengthmodelsadoptedbyinternationalguidesforfrpconfinedconcretecolumnssubjectedtoaxialcompression
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Experimental analysis and design strength models adopted by international guides for FRP-confined concrete columns subjected to axial compression

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