Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams

The serviceability and safety of building and bridge structures may gradually degrade due to long term use, natural environmental deterioration, poor initial design and/or construction, increased design loads, extreme events such as earthquakes, and/or lack of maintenance. It is needed to use materi...

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Autores principales:	monireh Sanghi, Javad Vaseghi Amiri, Gholamreza Abdollahzadeh, Mehdi Dehestani
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2020
Materias:	notched concrete beam cfrp debonding cmod nonlinear finite element analysis Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/6beb0a1febfb46e9a5252eb67a9e7864
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spelling	oai:doaj.org-article:6beb0a1febfb46e9a5252eb67a9e78642021-11-08T15:53:06ZNumerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams2476-39772538-261610.22065/jsce.2018.102020.1357https://doaj.org/article/6beb0a1febfb46e9a5252eb67a9e78642020-03-01T00:00:00Zhttps://www.jsce.ir/article_66330_12b529d3dce68b222cdefab03fddb1af.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616The serviceability and safety of building and bridge structures may gradually degrade due to long term use, natural environmental deterioration, poor initial design and/or construction, increased design loads, extreme events such as earthquakes, and/or lack of maintenance. It is needed to use materials that are not susceptible to the same causes that trigged the deterioration in the first instance. Since the rebuilding of old infrastructure is very expensive and time consuming, cost-efficient and durable techniques of strengthening/rehabilitating are needed. There is a growing interest in the use of Fiber Reinforced Polymer (FRP) composite materials for the strengthening and retrofitting of concrete beams. Also it is too important to know the influence of effective parameters on the fractural behavior and strengthening of cracked concrete beams, so the present study is dedicated to numerical analysis of carbon fiber reinforced polymer (CFRP) sheet-strengthened notched concrete beams. The bearing capacity, CFRP debonding and crack mouth opening displacement (CMOD) of notched beams were evaluated with nonlinear finite element method. Numerical results have been compared with experimental results of other researches. After validation the numerical modeling of CFRP plated notched beams, parametric studies reveal quantitatively the effects of various factors such as; thickness of CFRP sheet, compressive strength of concrete, initial crack length and interfacial bond strength on the CMOD curve of mentioned beam, which is found to be characterized by two peak loads. The first and second peak loads increase with the increase in concrete strength, the thickness of CFRP sheet and the interfacial bond strength. It is also found that increasing the initial crack length decreases the first peak load but no exerts on the second peak load.monireh SanghiJavad Vaseghi AmiriGholamreza AbdollahzadehMehdi DehestaniIranian Society of Structrual Engineering (ISSE)articlenotched concrete beamcfrpdebondingcmodnonlinear finite element analysisBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 7, Iss 1, Pp 56-71 (2020)
institution	DOAJ
collection	DOAJ
language	FA
topic	notched concrete beam cfrp debonding cmod nonlinear finite element analysis Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	notched concrete beam cfrp debonding cmod nonlinear finite element analysis Bridge engineering TG1-470 Building construction TH1-9745 monireh Sanghi Javad Vaseghi Amiri Gholamreza Abdollahzadeh Mehdi Dehestani Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams
description	The serviceability and safety of building and bridge structures may gradually degrade due to long term use, natural environmental deterioration, poor initial design and/or construction, increased design loads, extreme events such as earthquakes, and/or lack of maintenance. It is needed to use materials that are not susceptible to the same causes that trigged the deterioration in the first instance. Since the rebuilding of old infrastructure is very expensive and time consuming, cost-efficient and durable techniques of strengthening/rehabilitating are needed. There is a growing interest in the use of Fiber Reinforced Polymer (FRP) composite materials for the strengthening and retrofitting of concrete beams. Also it is too important to know the influence of effective parameters on the fractural behavior and strengthening of cracked concrete beams, so the present study is dedicated to numerical analysis of carbon fiber reinforced polymer (CFRP) sheet-strengthened notched concrete beams. The bearing capacity, CFRP debonding and crack mouth opening displacement (CMOD) of notched beams were evaluated with nonlinear finite element method. Numerical results have been compared with experimental results of other researches. After validation the numerical modeling of CFRP plated notched beams, parametric studies reveal quantitatively the effects of various factors such as; thickness of CFRP sheet, compressive strength of concrete, initial crack length and interfacial bond strength on the CMOD curve of mentioned beam, which is found to be characterized by two peak loads. The first and second peak loads increase with the increase in concrete strength, the thickness of CFRP sheet and the interfacial bond strength. It is also found that increasing the initial crack length decreases the first peak load but no exerts on the second peak load.
format	article
author	monireh Sanghi Javad Vaseghi Amiri Gholamreza Abdollahzadeh Mehdi Dehestani
author_facet	monireh Sanghi Javad Vaseghi Amiri Gholamreza Abdollahzadeh Mehdi Dehestani
author_sort	monireh Sanghi
title	Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams
title_short	Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams
title_full	Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams
title_fullStr	Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams
title_full_unstemmed	Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams
title_sort	numerical analysis of fracture behavior of cfrp sheet–strengthened notched concrete beams
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2020
url	https://doaj.org/article/6beb0a1febfb46e9a5252eb67a9e7864
work_keys_str_mv	AT monirehsanghi numericalanalysisoffracturebehaviorofcfrpsheetstrengthenednotchedconcretebeams AT javadvaseghiamiri numericalanalysisoffracturebehaviorofcfrpsheetstrengthenednotchedconcretebeams AT gholamrezaabdollahzadeh numericalanalysisoffracturebehaviorofcfrpsheetstrengthenednotchedconcretebeams AT mehdidehestani numericalanalysisoffracturebehaviorofcfrpsheetstrengthenednotchedconcretebeams
_version_	1718441571971497984

Numerical analysis of Fracture behavior of CFRP Sheet–Strengthened notched Concrete Beams

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