Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study

This paper presents the numerical study on unretrofitted and retrofitted reinforced concrete beams subjected to combined bending and torsion. Different ratios between twisting moment and bending moment are considered. The finite elements adopted by ANSYS are used for this study. For the purpose of...

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Main Authors: R.Santhakumar, R.Dhanaraj, E.Chandrasekaran
Format: Article
Language:English
Published: Electronic Journals for Science and Engineering - International 2007-06-01
Series:Electronic Journal of Structural Engineering
Online Access:https://ejsei.com/EJSE/article/view/69
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author R.Santhakumar
R.Dhanaraj
E.Chandrasekaran
author_facet R.Santhakumar
R.Dhanaraj
E.Chandrasekaran
author_sort R.Santhakumar
collection DOAJ
description This paper presents the numerical study on unretrofitted and retrofitted reinforced concrete beams subjected to combined bending and torsion. Different ratios between twisting moment and bending moment are considered. The finite elements adopted by ANSYS are used for this study. For the purpose of validation of the finite element model developed, the numerical study is first carried out on the unretrofitted reinforced concrete beams that were experimentally tested and reported in the literature. Then the study has been extended for the same reinforced concrete beams retrofitted with carbon fiber reinforced plastic composites with ±45o and 0/90o fiber orientations. The present study reveals that the CFRP composites with ±45o fiber orientations are more effective in retrofitting the RC beams subjected to combined bending and torsion for higher torque to moment ratios.
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spelling doaj.art-f58d70b5f8e44fe9af4a8fb0f8d890582023-08-29T10:30:03ZengElectronic Journals for Science and Engineering - InternationalElectronic Journal of Structural Engineering1443-92552007-06-01710.56748/ejse.769Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical studyR.Santhakumar0R.Dhanaraj1E.Chandrasekaran2National Institute of Technical Teachers Training and ResearchMadras Institute of TechnologyCrescent Engineering College This paper presents the numerical study on unretrofitted and retrofitted reinforced concrete beams subjected to combined bending and torsion. Different ratios between twisting moment and bending moment are considered. The finite elements adopted by ANSYS are used for this study. For the purpose of validation of the finite element model developed, the numerical study is first carried out on the unretrofitted reinforced concrete beams that were experimentally tested and reported in the literature. Then the study has been extended for the same reinforced concrete beams retrofitted with carbon fiber reinforced plastic composites with ±45o and 0/90o fiber orientations. The present study reveals that the CFRP composites with ±45o fiber orientations are more effective in retrofitting the RC beams subjected to combined bending and torsion for higher torque to moment ratios. https://ejsei.com/EJSE/article/view/69
spellingShingle R.Santhakumar
R.Dhanaraj
E.Chandrasekaran
Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study
Electronic Journal of Structural Engineering
title Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study
title_full Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study
title_fullStr Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study
title_full_unstemmed Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study
title_short Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study
title_sort behaviour of retrofitted reinforced concrete beams under combined bending and torsion a numerical study
url https://ejsei.com/EJSE/article/view/69
work_keys_str_mv AT rsanthakumar behaviourofretrofittedreinforcedconcretebeamsundercombinedbendingandtorsionanumericalstudy
AT rdhanaraj behaviourofretrofittedreinforcedconcretebeamsundercombinedbendingandtorsionanumericalstudy
AT echandrasekaran behaviourofretrofittedreinforcedconcretebeamsundercombinedbendingandtorsionanumericalstudy