The impact of depth on shear behavior of strengthened beams

The main aim of this work is to investigate the influence of the beam's depth on the behavior of the externally-strengthened-with-CFRP beams, having shear deficiency. The Nonlinear Finite Element Analysis (NLFEA) has been utilized to construct and validate study models, which had been subjected...

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Autor principal:	Al-Rousan Rajai
Formato:	article
Lenguaje:	EN
Publicado:	Peter the Great St. Petersburg Polytechnic University 2021
Materias:	reinforced concrete beam depth shear flexural strength fiber reinforced polymer nonlinear finite element analysis Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/c6c37bc604654be3a4be8d143079fe10
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spelling	oai:doaj.org-article:c6c37bc604654be3a4be8d143079fe102021-11-12T15:54:04ZThe impact of depth on shear behavior of strengthened beams2712-817210.34910/MCE.105.1https://doaj.org/article/c6c37bc604654be3a4be8d143079fe102021-09-01T00:00:00Zhttp://engstroy.spbstu.ru/article/2021.105.01/https://doaj.org/toc/2712-8172The main aim of this work is to investigate the influence of the beam's depth on the behavior of the externally-strengthened-with-CFRP beams, having shear deficiency. The Nonlinear Finite Element Analysis (NLFEA) has been utilized to construct and validate study models, which had been subjected to load till failure aiming to monitor their performance. Also, the cracking's first appearance, the increase rate of cracking according to loadings, and ductility were all put to observation. The NLFEA results indicated that strengthening the RC beams with externally-bonded CFRP enhanced the beams' shear capacity, in accordance to the study parameters. The strips of CFRP enhanced the beam's ultimate load by 15–19 %. In the NLFEA modelled beams, it had been noticed that the more the beam's depth, the less the shear span-to-depth ratio; as that ratio was 2.7 at a depth of 225 mm, where the ratio became 1.2 at a depth of 450 mm. The depth, of strengthened and control beams, was more influential on the beam's ultimate load than the resultant deflections. Also, the attained findings pointed out that the RC beam's depth had affected the cracking angle; as it was: 33°, 44°, 50°, and 54° at a beam's shear span-to-depth ratio of: 2.7, 1.9, 1.5, and 1.2, respectively. Had a shear crack exceeded the length of a CFRP strip, the stirrup would fail to get to its yield strength. In this case, the influence of the beams' depth is limited. Finally, the obtained NLFEA results were evaluated by comparing them to well-known shear strength models.Al-Rousan RajaiPeter the Great St. Petersburg Polytechnic Universityarticlereinforced concretebeam depthshearflexural strengthfiber reinforced polymernonlinearfinite element analysisEngineering (General). Civil engineering (General)TA1-2040ENMagazine of Civil Engineering, Vol None, Iss 05 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	reinforced concrete beam depth shear flexural strength fiber reinforced polymer nonlinear finite element analysis Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	reinforced concrete beam depth shear flexural strength fiber reinforced polymer nonlinear finite element analysis Engineering (General). Civil engineering (General) TA1-2040 Al-Rousan Rajai The impact of depth on shear behavior of strengthened beams
description	The main aim of this work is to investigate the influence of the beam's depth on the behavior of the externally-strengthened-with-CFRP beams, having shear deficiency. The Nonlinear Finite Element Analysis (NLFEA) has been utilized to construct and validate study models, which had been subjected to load till failure aiming to monitor their performance. Also, the cracking's first appearance, the increase rate of cracking according to loadings, and ductility were all put to observation. The NLFEA results indicated that strengthening the RC beams with externally-bonded CFRP enhanced the beams' shear capacity, in accordance to the study parameters. The strips of CFRP enhanced the beam's ultimate load by 15–19 %. In the NLFEA modelled beams, it had been noticed that the more the beam's depth, the less the shear span-to-depth ratio; as that ratio was 2.7 at a depth of 225 mm, where the ratio became 1.2 at a depth of 450 mm. The depth, of strengthened and control beams, was more influential on the beam's ultimate load than the resultant deflections. Also, the attained findings pointed out that the RC beam's depth had affected the cracking angle; as it was: 33°, 44°, 50°, and 54° at a beam's shear span-to-depth ratio of: 2.7, 1.9, 1.5, and 1.2, respectively. Had a shear crack exceeded the length of a CFRP strip, the stirrup would fail to get to its yield strength. In this case, the influence of the beams' depth is limited. Finally, the obtained NLFEA results were evaluated by comparing them to well-known shear strength models.
format	article
author	Al-Rousan Rajai
author_facet	Al-Rousan Rajai
author_sort	Al-Rousan Rajai
title	The impact of depth on shear behavior of strengthened beams
title_short	The impact of depth on shear behavior of strengthened beams
title_full	The impact of depth on shear behavior of strengthened beams
title_fullStr	The impact of depth on shear behavior of strengthened beams
title_full_unstemmed	The impact of depth on shear behavior of strengthened beams
title_sort	impact of depth on shear behavior of strengthened beams
publisher	Peter the Great St. Petersburg Polytechnic University
publishDate	2021
url	https://doaj.org/article/c6c37bc604654be3a4be8d143079fe10
work_keys_str_mv	AT alrousanrajai theimpactofdepthonshearbehaviorofstrengthenedbeams AT alrousanrajai impactofdepthonshearbehaviorofstrengthenedbeams
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The impact of depth on shear behavior of strengthened beams

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