Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups

Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups

The use of fiber reinforced polymer (FRP) bars as an alternative to steel bars for reinforced concrete (RC) structures is gaining acceptance among the structural engineers. The investigation of structure performance of FRP-RC members has become a critical issue. Extensive researches have been conduc...

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Main Author: Omar Imohamed, Imohamed Ali
Format: Thesis
Language:English
English
English
Published: 2018
Subjects:
TA630-695 Structural engineering (General)
Online Access:http://eprints.uthm.edu.my/7557/1/24p%20IMOHAMED%20ALI%20OMAR%20IMOHAMED.pdf
http://eprints.uthm.edu.my/7557/2/IMOHAMED%20ALI%20OMAR%20IMOHAMED%20COPYRIGHT%20DECLARATION.pdf
http://eprints.uthm.edu.my/7557/3/IMOHAMED%20ALI%20OMAR%20IMOHAMED%20WATERMARK.pdf
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spelling my-uthm-ep.75572022-08-21T01:45:38Z Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups 2018-05 Omar Imohamed, Imohamed Ali TA630-695 Structural engineering (General) The use of fiber reinforced polymer (FRP) bars as an alternative to steel bars for reinforced concrete (RC) structures is gaining acceptance among the structural engineers. The investigation of structure performance of FRP-RC members has become a critical issue. Extensive researches have been conducted to investigate the shear behavior of RC members with FRP bar. However, the shear strength design of FRP­RC beams is similar to that of RC beams with steel bar except that the mechanical properties of FRP bars which affect the shear strength design shall be considered. The focus of this research is to investigate the shear behavior of FRP-RC beams. A total of 18 RC beams were constructed and tested up to failure, the test beams included 10 GFRP-RC beams and 8 steel-RC beams. In order to realize the occurrence of the shear failure, all tested beams were designed without stirrups. The test variables were the reinforcement ratio (p), shear span to depth ratio (aid), depth of beam (d), and concrete compressive strength(//). The test results revealed that there is an effect of the variables on the shear behavior of the beams. Finite element model (FEM) was carried out to validate the experimental results conducted in the current investigation, resulting in a good agreement with experiments. The test results were compared with predictions provided by the different available codes, manuals, and design guidelines such as CSA S806-02, ACI 440.1 R-06, JSCE (1997), ISIS M03-07 and theoretical models from Kazemi & Broujerdian (2006), Yousif (2015), Chowdhury et al. (2016) and Mihaylov (2016), in which it was observed from the statistical analysis that Kazemi & Broujerdian (2006) method showed a good consistency in its differences of percentage compared with other models, particularly for GFRP-RC beams. Based on the obtained experimental results, a proposed modification to the Kazemi & Broujerdian (2006) equation is presented and verified against test results available in the literature. It was found that the proposed equation is more accurate and consistent in predicting the shear strength ofGFRP-RC beams. 2018-05 Thesis http://eprints.uthm.edu.my/7557/ http://eprints.uthm.edu.my/7557/1/24p%20IMOHAMED%20ALI%20OMAR%20IMOHAMED.pdf text en public http://eprints.uthm.edu.my/7557/2/IMOHAMED%20ALI%20OMAR%20IMOHAMED%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/7557/3/IMOHAMED%20ALI%20OMAR%20IMOHAMED%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Awam dan Alam Sekitar
institution Universiti Tun Hussein Onn Malaysia
collection UTHM Institutional Repository
language English
English
English
topic TA630-695 Structural engineering (General)
spellingShingle TA630-695 Structural engineering (General)
Omar Imohamed, Imohamed Ali
Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
description The use of fiber reinforced polymer (FRP) bars as an alternative to steel bars for reinforced concrete (RC) structures is gaining acceptance among the structural engineers. The investigation of structure performance of FRP-RC members has become a critical issue. Extensive researches have been conducted to investigate the shear behavior of RC members with FRP bar. However, the shear strength design of FRP­RC beams is similar to that of RC beams with steel bar except that the mechanical properties of FRP bars which affect the shear strength design shall be considered. The focus of this research is to investigate the shear behavior of FRP-RC beams. A total of 18 RC beams were constructed and tested up to failure, the test beams included 10 GFRP-RC beams and 8 steel-RC beams. In order to realize the occurrence of the shear failure, all tested beams were designed without stirrups. The test variables were the reinforcement ratio (p), shear span to depth ratio (aid), depth of beam (d), and concrete compressive strength(//). The test results revealed that there is an effect of the variables on the shear behavior of the beams. Finite element model (FEM) was carried out to validate the experimental results conducted in the current investigation, resulting in a good agreement with experiments. The test results were compared with predictions provided by the different available codes, manuals, and design guidelines such as CSA S806-02, ACI 440.1 R-06, JSCE (1997), ISIS M03-07 and theoretical models from Kazemi & Broujerdian (2006), Yousif (2015), Chowdhury et al. (2016) and Mihaylov (2016), in which it was observed from the statistical analysis that Kazemi & Broujerdian (2006) method showed a good consistency in its differences of percentage compared with other models, particularly for GFRP-RC beams. Based on the obtained experimental results, a proposed modification to the Kazemi & Broujerdian (2006) equation is presented and verified against test results available in the literature. It was found that the proposed equation is more accurate and consistent in predicting the shear strength ofGFRP-RC beams.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Omar Imohamed, Imohamed Ali
author_facet Omar Imohamed, Imohamed Ali
author_sort Omar Imohamed, Imohamed Ali
title Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
title_short Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
title_full Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
title_fullStr Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
title_full_unstemmed Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
title_sort shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
granting_institution Universiti Tun Hussein Onn Malaysia
granting_department Fakulti Kejuruteraan Awam dan Alam Sekitar
publishDate 2018
url http://eprints.uthm.edu.my/7557/1/24p%20IMOHAMED%20ALI%20OMAR%20IMOHAMED.pdf
http://eprints.uthm.edu.my/7557/2/IMOHAMED%20ALI%20OMAR%20IMOHAMED%20COPYRIGHT%20DECLARATION.pdf
http://eprints.uthm.edu.my/7557/3/IMOHAMED%20ALI%20OMAR%20IMOHAMED%20WATERMARK.pdf
_version_ 1747831168053542912

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