The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings

Thirteen simply supported steel samples have been tested to explain the effects of strengthening steel beams using an external prestressing strand. The samples have the same cross-sectional dimensions and overall length. One steel beam without strengthening was taken as a reference, while the other...

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Autores principales:	Rasheed Mohammed M., Mahmoud Kamal Sh., Mohaisen Saad Khalaf, Yousif Mohammed Z.
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	strengthening of steel beams deflection behavior pre-stressing eccentricity of strand jacking's stress Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/9e29617c66c944ec948c9e821813d733
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spelling	oai:doaj.org-article:9e29617c66c944ec948c9e821813d7332021-11-12T11:43:50ZThe Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings2267-124210.1051/e3sconf/202131803007https://doaj.org/article/9e29617c66c944ec948c9e821813d7332021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/94/e3sconf_icge2021_03007.pdfhttps://doaj.org/toc/2267-1242Thirteen simply supported steel samples have been tested to explain the effects of strengthening steel beams using an external prestressing strand. The samples have the same cross-sectional dimensions and overall length. One steel beam without strengthening was taken as a reference, while the other twelve of them had been strengthening by two external strands at various eccentricity locations and jacking stresses. The strengthening by external prestressing strands is sub-divided into two series according to jacking stress. Each series consists of six steel samples divided according to the eccentricity location of prestressing strand. During tests, it was found that the Load deflection response for the strengthened samples is stiffer as compared with the reference. The increasing percentage in ultimate load capacity was increased to 0.347, 2.758, 3.921, 8.898, 9.326, and 10.256% for beams under jacking stress of 1120 MPa, while increasing percentage in ultimate load capacity were increased to 0.17, 26, 33, 48.5, 13.7, and 69.56% for beams under jacking stress of 815 MPa. On the other hand, the maximum percentages of deflection were decreased to 4.88, 2.44, 20.62, 15, and 9.7% when the jacking stress increase from 815 to 1120 MPa and the ratio of the quarter to mid-span deflection (δ quarter / δ mid) is about 0.528 and 0.497 when jacking stress is 1120 and 815 MPa respectively. So, the increase in jacking stresses from 815 to 1120 MPa will not be preferable because it has a little increasing percentage in stiffening and behaviors compared with other tested beams at the same condition.Rasheed Mohammed M.Mahmoud Kamal Sh.Mohaisen Saad KhalafYousif Mohammed Z.EDP Sciencesarticlestrengthening of steel beamsdeflection behaviorpre-stressingeccentricity of strandjacking's stressEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 318, p 03007 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	strengthening of steel beams deflection behavior pre-stressing eccentricity of strand jacking's stress Environmental sciences GE1-350
spellingShingle	strengthening of steel beams deflection behavior pre-stressing eccentricity of strand jacking's stress Environmental sciences GE1-350 Rasheed Mohammed M. Mahmoud Kamal Sh. Mohaisen Saad Khalaf Yousif Mohammed Z. The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings
description	Thirteen simply supported steel samples have been tested to explain the effects of strengthening steel beams using an external prestressing strand. The samples have the same cross-sectional dimensions and overall length. One steel beam without strengthening was taken as a reference, while the other twelve of them had been strengthening by two external strands at various eccentricity locations and jacking stresses. The strengthening by external prestressing strands is sub-divided into two series according to jacking stress. Each series consists of six steel samples divided according to the eccentricity location of prestressing strand. During tests, it was found that the Load deflection response for the strengthened samples is stiffer as compared with the reference. The increasing percentage in ultimate load capacity was increased to 0.347, 2.758, 3.921, 8.898, 9.326, and 10.256% for beams under jacking stress of 1120 MPa, while increasing percentage in ultimate load capacity were increased to 0.17, 26, 33, 48.5, 13.7, and 69.56% for beams under jacking stress of 815 MPa. On the other hand, the maximum percentages of deflection were decreased to 4.88, 2.44, 20.62, 15, and 9.7% when the jacking stress increase from 815 to 1120 MPa and the ratio of the quarter to mid-span deflection (δ quarter / δ mid) is about 0.528 and 0.497 when jacking stress is 1120 and 815 MPa respectively. So, the increase in jacking stresses from 815 to 1120 MPa will not be preferable because it has a little increasing percentage in stiffening and behaviors compared with other tested beams at the same condition.
format	article
author	Rasheed Mohammed M. Mahmoud Kamal Sh. Mohaisen Saad Khalaf Yousif Mohammed Z.
author_facet	Rasheed Mohammed M. Mahmoud Kamal Sh. Mohaisen Saad Khalaf Yousif Mohammed Z.
author_sort	Rasheed Mohammed M.
title	The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings
title_short	The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings
title_full	The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings
title_fullStr	The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings
title_full_unstemmed	The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings
title_sort	behavior of a strengthened steel beam section under eccentric loadings
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/9e29617c66c944ec948c9e821813d733
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The Behavior of a Strengthened Steel Beam Section Under Eccentric Loadings

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