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Shear Failure of RC Dapped-End Beams

Reinforced concrete dapped-end beams (RC-DEBs) are mainly used for precast element construction. RC-DEBs generally are recessed at their end parts and supported by columns, cantilevers, inverted T-beams, or corbels. The geometric discontinuity of dapped-end beams evokes a severe stress concentration...

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Main Author: , Muhammad Aswin, Bashar S Mohammed, Mohammad Shahir Liew, Zubair
Format: Article
Published: 2015
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utp.edu.my/12089/
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spelling my.utp.eprints.120892018-01-24T00:44:33Z Shear Failure of RC Dapped-End Beams , Muhammad Aswin, Bashar S Mohammed, Mohammad Shahir Liew, Zubair TA Engineering (General). Civil engineering (General) Reinforced concrete dapped-end beams (RC-DEBs) are mainly used for precast element construction. RC-DEBs generally are recessed at their end parts and supported by columns, cantilevers, inverted T-beams, or corbels. The geometric discontinuity of dapped-end beams evokes a severe stress concentration at reentrant corners that may lead to shear failure. Therefore, stress analysis is required at the reentrant vicinity for design requirement of these beams. Four large-scale RC-DEBs specimens were prepared, cast, and tested up to failure. Three parameters were investigated: amount of nib reinforcements, main flexural reinforcements, and concrete type at the dapped-end area. Finite element analysis using Vec2 was also conducted to predict the behavior of RC-DEBs. It has been found that highest stresses concentration factors occur at the reentrant corners and its vicinity. By using engineered cementitious composite (ECC) in the dapped-end area, the failure load has increased by 51.9%, while the increment in the failure load was 62.2% and 46.7% as the amount of nib reinforcement and main flexural reinforcement increased, respectively. In addition, Vec2 analysis has been found to provide better accuracy for predicting the failure load of RC-DEBs compared to other analysis approaches. 2015-10 Article PeerReviewed , Muhammad Aswin, Bashar S Mohammed, Mohammad Shahir Liew, Zubair (2015) Shear Failure of RC Dapped-End Beams. Shear Failure of RC Dapped-End Beams . (Submitted) http://eprints.utp.edu.my/12089/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
, Muhammad Aswin, Bashar S Mohammed, Mohammad Shahir Liew, Zubair
Shear Failure of RC Dapped-End Beams
description Reinforced concrete dapped-end beams (RC-DEBs) are mainly used for precast element construction. RC-DEBs generally are recessed at their end parts and supported by columns, cantilevers, inverted T-beams, or corbels. The geometric discontinuity of dapped-end beams evokes a severe stress concentration at reentrant corners that may lead to shear failure. Therefore, stress analysis is required at the reentrant vicinity for design requirement of these beams. Four large-scale RC-DEBs specimens were prepared, cast, and tested up to failure. Three parameters were investigated: amount of nib reinforcements, main flexural reinforcements, and concrete type at the dapped-end area. Finite element analysis using Vec2 was also conducted to predict the behavior of RC-DEBs. It has been found that highest stresses concentration factors occur at the reentrant corners and its vicinity. By using engineered cementitious composite (ECC) in the dapped-end area, the failure load has increased by 51.9%, while the increment in the failure load was 62.2% and 46.7% as the amount of nib reinforcement and main flexural reinforcement increased, respectively. In addition, Vec2 analysis has been found to provide better accuracy for predicting the failure load of RC-DEBs compared to other analysis approaches.
format Article
author , Muhammad Aswin, Bashar S Mohammed, Mohammad Shahir Liew, Zubair
author_facet , Muhammad Aswin, Bashar S Mohammed, Mohammad Shahir Liew, Zubair
author_sort , Muhammad Aswin, Bashar S Mohammed, Mohammad Shahir Liew, Zubair
title Shear Failure of RC Dapped-End Beams
title_short Shear Failure of RC Dapped-End Beams
title_full Shear Failure of RC Dapped-End Beams
title_fullStr Shear Failure of RC Dapped-End Beams
title_full_unstemmed Shear Failure of RC Dapped-End Beams
title_sort shear failure of rc dapped-end beams
publishDate 2015
url http://eprints.utp.edu.my/12089/
_version_ 1738656008433041408
score 13.211869

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