Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams

Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams

End anchors have been shown to significantly reduce premature plate end debonding failure of plate bonded strengthened reinforced concrete (r. c.) beams. One of the main interest in designing end anchors is to determine the minimum or optimal length of end anchors for a given thickness and height of...

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Main Authors: Jumaat, M.Z., Alam, M.D.A.
Format: Article
Published: Int. J. Phys. Sci 2010
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:https://www.academicjournals.org/ijps/pdf/pdf2010/Feb/Jumaat%20and%20Alam.pdf
https://www.academicjournals.org/ijps/pdf/pdf2010/Feb/Jumaat%20and%20Alam.pdf
http://eprints.um.edu.my/6009/1/Experimental_and_numerical_analysis_of_end_anchored_steel_plate_and_CFRP_laminate_flexurally_strengthened_reinforced_concrete_(rc)_beams.pdf
id um-6009
recordtype eprints
spelling um-60092017-10-04T07:38:49Z Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams Jumaat, M.Z. Alam, M.D.A. TA Engineering (General). Civil engineering (General) End anchors have been shown to significantly reduce premature plate end debonding failure of plate bonded strengthened reinforced concrete (r. c.) beams. One of the main interest in designing end anchors is to determine the minimum or optimal length of end anchors for a given thickness and height of the end anchor. This paper presents experimental and numerical studies in determining those optimum lengths for steel plate and carbon fibre reinforced polymer (CFRP) laminate flexurally strengthened r. c. beams. In the experimental programme, seven r. c. beams were cast. One beam was tested in the un-strengthened condition to act as the control beam. Three beams were strengthened with steel plates and another three beams were strengthened with CFRP laminates. From each group of the strengthened beams, one beam was strengthened without any end anchor, one was end anchored using the optimum anchorage length and the last one was end anchored using an arbitrarily 200 mm anchorage length. The optimum length for the end anchor used in this study was derived from analyzing the interfacial stress diagram of the strengthened beams and was found to be approximately 100 mm. The beams were also modelled using FEM (LUSAS). The results indicate that the optimized 100 mm anchorage length plates were able to prevent premature plate end debonding failure of steel plate and CFRP laminate strengthened beams satisfactorily. It could also be seen from the results that beams with end anchors had a higher failure loads and had more ductile behaviour than the un-anchored strengthened beams. Results also show that the optimized end anchored strengthened beams had identical structural behaviour to that of the longer end anchored strengthened beams. The numerical results are able to predict the behaviour of the beams satisfactorily. Int. J. Phys. Sci 2010 Article PeerReviewed application/pdf http://eprints.um.edu.my/6009/1/Experimental_and_numerical_analysis_of_end_anchored_steel_plate_and_CFRP_laminate_flexurally_strengthened_reinforced_concrete_(rc)_beams.pdf https://www.academicjournals.org/ijps/pdf/pdf2010/Feb/Jumaat%20and%20Alam.pdf Jumaat, M.Z.; Alam, M.D.A. (2010) Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams. International Journal of the Physical Sciences <http://eprints.um.edu.my/view/publication/International_Journal_of_the_Physical_Sciences.html>, 5 (2). pp. 132-144. ISSN 1992 - 1950 http://eprints.um.edu.my/6009/
repository_type Digital Repository
institution_category Local University
institution University Malaya
building UM Research Repository
collection Online Access
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Jumaat, M.Z.
Alam, M.D.A.
Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams
description End anchors have been shown to significantly reduce premature plate end debonding failure of plate bonded strengthened reinforced concrete (r. c.) beams. One of the main interest in designing end anchors is to determine the minimum or optimal length of end anchors for a given thickness and height of the end anchor. This paper presents experimental and numerical studies in determining those optimum lengths for steel plate and carbon fibre reinforced polymer (CFRP) laminate flexurally strengthened r. c. beams. In the experimental programme, seven r. c. beams were cast. One beam was tested in the un-strengthened condition to act as the control beam. Three beams were strengthened with steel plates and another three beams were strengthened with CFRP laminates. From each group of the strengthened beams, one beam was strengthened without any end anchor, one was end anchored using the optimum anchorage length and the last one was end anchored using an arbitrarily 200 mm anchorage length. The optimum length for the end anchor used in this study was derived from analyzing the interfacial stress diagram of the strengthened beams and was found to be approximately 100 mm. The beams were also modelled using FEM (LUSAS). The results indicate that the optimized 100 mm anchorage length plates were able to prevent premature plate end debonding failure of steel plate and CFRP laminate strengthened beams satisfactorily. It could also be seen from the results that beams with end anchors had a higher failure loads and had more ductile behaviour than the un-anchored strengthened beams. Results also show that the optimized end anchored strengthened beams had identical structural behaviour to that of the longer end anchored strengthened beams. The numerical results are able to predict the behaviour of the beams satisfactorily.
format Article
author Jumaat, M.Z.
Alam, M.D.A.
author_facet Jumaat, M.Z.
Alam, M.D.A.
author_sort Jumaat, M.Z.
title Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams
title_short Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams
title_full Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams
title_fullStr Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams
title_full_unstemmed Experimental and numerical analysis of end anchored steel plate and CFRP laminate flexurally strengthened reinforced concrete (rc) beams
title_sort experimental and numerical analysis of end anchored steel plate and cfrp laminate flexurally strengthened reinforced concrete (rc) beams
publisher Int. J. Phys. Sci
publishDate 2010
url https://www.academicjournals.org/ijps/pdf/pdf2010/Feb/Jumaat%20and%20Alam.pdf
https://www.academicjournals.org/ijps/pdf/pdf2010/Feb/Jumaat%20and%20Alam.pdf
http://eprints.um.edu.my/6009/1/Experimental_and_numerical_analysis_of_end_anchored_steel_plate_and_CFRP_laminate_flexurally_strengthened_reinforced_concrete_(rc)_beams.pdf
first_indexed 2018-09-05T16:56:43Z
last_indexed 2018-09-05T16:56:43Z
_version_ 1610833983598231552

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