Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling

In this paper, in order to numerically model the bond-slip behavior of embedded bars, an applicable procedure was proposed. To evaluate the efficiency of the proposed model, a credible experimental specimen was selected and modeled in Abaqus software. Comparing the numerical and experimental results...

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Autores principales:	Amin Iranpour, Houman Ebrahimpour, Reza Rahgozar
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2019
Materias:	precast concrete beam-to-column connection finite element modeling bond-slip behavior mechanical anchorage Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/7bffe60a34954291ad0222892298b05c
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spelling	oai:doaj.org-article:7bffe60a34954291ad0222892298b05c2021-11-08T15:52:22ZEvaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling2476-39772538-261610.22065/jsce.2018.109860.1406https://doaj.org/article/7bffe60a34954291ad0222892298b05c2019-11-01T00:00:00Zhttps://www.jsce.ir/article_61781_4fbb7be59ebbdcf905961c0adeddad34.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616In this paper, in order to numerically model the bond-slip behavior of embedded bars, an applicable procedure was proposed. To evaluate the efficiency of the proposed model, a credible experimental specimen was selected and modeled in Abaqus software. Comparing the numerical and experimental results of the specimen confirmed the acceptable accuracy of the proposed model. Afterwards, two monolithic and precast reinforced concrete beam-to-column connections were chosen from experimental tests and were numerically simulated. Investigation on the precast specimen showed that the required embedded length of longitudinal bars of beam was not considered. Hence, slippage of the longitudinal bars of the beam at the connection area led to degradation of connection strength. In order to consider this slippage in finite element modeling, the proposed approach was employed. Analytical results showed a suitable agreement with experimental ones and slippage of the beam bars was observed in the finite element analysis. Consequently, in order to prevent the slippage of beam bars, couplers at the end of the bars were used. Required area of the couplers was calculated as such to develop yielding in longitudinal beam bars. These couplers were added to the precast specimen and afterward, this specimen was named modified-precast specimen. Capacity of the modified-precast specimen including yielding load, ultimate load and ductility was improved in comparison with monolithic and precast specimen. However, the ratios of ultimate moment to flexural strength in modified-precast and monolithic specimens are approximately equal to one, which shows the formation of flexural plastic hinge in the beams of both modified-precast and monolithic specimens.Amin IranpourHouman EbrahimpourReza RahgozarIranian Society of Structrual Engineering (ISSE)articleprecast concretebeam-to-column connectionfinite element modelingbond-slip behaviormechanical anchorageBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 6, Iss شماره 3, Pp 159-174 (2019)
institution	DOAJ
collection	DOAJ
language	FA
topic	precast concrete beam-to-column connection finite element modeling bond-slip behavior mechanical anchorage Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	precast concrete beam-to-column connection finite element modeling bond-slip behavior mechanical anchorage Bridge engineering TG1-470 Building construction TH1-9745 Amin Iranpour Houman Ebrahimpour Reza Rahgozar Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling
description	In this paper, in order to numerically model the bond-slip behavior of embedded bars, an applicable procedure was proposed. To evaluate the efficiency of the proposed model, a credible experimental specimen was selected and modeled in Abaqus software. Comparing the numerical and experimental results of the specimen confirmed the acceptable accuracy of the proposed model. Afterwards, two monolithic and precast reinforced concrete beam-to-column connections were chosen from experimental tests and were numerically simulated. Investigation on the precast specimen showed that the required embedded length of longitudinal bars of beam was not considered. Hence, slippage of the longitudinal bars of the beam at the connection area led to degradation of connection strength. In order to consider this slippage in finite element modeling, the proposed approach was employed. Analytical results showed a suitable agreement with experimental ones and slippage of the beam bars was observed in the finite element analysis. Consequently, in order to prevent the slippage of beam bars, couplers at the end of the bars were used. Required area of the couplers was calculated as such to develop yielding in longitudinal beam bars. These couplers were added to the precast specimen and afterward, this specimen was named modified-precast specimen. Capacity of the modified-precast specimen including yielding load, ultimate load and ductility was improved in comparison with monolithic and precast specimen. However, the ratios of ultimate moment to flexural strength in modified-precast and monolithic specimens are approximately equal to one, which shows the formation of flexural plastic hinge in the beams of both modified-precast and monolithic specimens.
format	article
author	Amin Iranpour Houman Ebrahimpour Reza Rahgozar
author_facet	Amin Iranpour Houman Ebrahimpour Reza Rahgozar
author_sort	Amin Iranpour
title	Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling
title_short	Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling
title_full	Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling
title_fullStr	Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling
title_full_unstemmed	Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling
title_sort	evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2019
url	https://doaj.org/article/7bffe60a34954291ad0222892298b05c
work_keys_str_mv	AT aminiranpour evaluationofbondslipbehaviorinprecastreinforcedconcretebeamtocolumnconnectionusingfiniteelementmodeling AT houmanebrahimpour evaluationofbondslipbehaviorinprecastreinforcedconcretebeamtocolumnconnectionusingfiniteelementmodeling AT rezarahgozar evaluationofbondslipbehaviorinprecastreinforcedconcretebeamtocolumnconnectionusingfiniteelementmodeling
_version_	1718441676210438144

Evaluation of bond-slip behavior in precast reinforced concrete beam-to-column connection using finite element modeling

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