Strengthening R/C beams with opening by externally installed FRP rods: Behavior and analysis

Pimanmas, Amorn

doi:10.1016/j.compstruct.2009.11.031

Cited by 51 publications

(46 citation statements)

References 11 publications

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“…The viability of using externally bonded CFRP composite system to improve the shear behavior of shallow RC beams containing openings has also been reported in the literature by few researchers [20][21][22]. Pimanmas [21] indicated that the use of inclined near-surface-mounted composite rods externally installed diagonally to the beam axis alongside the opening throughout the entire beam depth can fully restore the shear capacity of RC beams with web openings.…”

Section: Introductionmentioning

confidence: 92%

“…Pimanmas [21] indicated that the use of inclined near-surface-mounted composite rods externally installed diagonally to the beam axis alongside the opening throughout the entire beam depth can fully restore the shear capacity of RC beams with web openings. El-Maaddawy and El-Ariss [22] reported that CFRP external strengthening around the opening improved the beam shear resistance and stiffness.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded composites

2012

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded composites

2012

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“…However, these openings may weaken the concrete structure noticeably and therefore, several researchers studied the effects of opening on the strength behavior of RC beams and methods for increasing the load bearing capacity of such components containing opening (e.g. Rashid & Kabir, 1996;Ahmed et al, 2012;Damian et al, 2001;El-Maaddawy & El-Ariss, 2012;Hawileh et al, 2012;Pimanmas, 2010;Pellegrino & Modena, 2002). Hence, analyzing such structural components under applied loads is of practical importance for civil engineers and designers.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of reinforced concrete beams containing bending and shear opening and strengthened with FRP sheet

Hosseini¹,

Amiri²,

Beiranvand³

2016

10.5267/j.esm

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Various methods are available to reinforce concrete members and structures. Wrapping the concrete beams with composite sheets is one of the suggested methods for increasing the load bearing capacity of concrete beams and specially those containing opening. In this paper, the influence of using two composite sheets reinforced with carbon (CFRP) and glass (GFRP) is studied on increasing the strength of concrete beams having opening. A number of concrete beams with and without openings were modeled in ANSYS and using the nonlinear analyses, the initial cracking load, ultimate failure load, cracking pattern and deflection were determined numerically for each beam. Different wrapping schemes were examined for increasing the load bearing capacity of the opening section and it was concluded that wrapping from both inside and exterior of opening with the mentioned composite patches provide the most enhancement in the opening zone. Also the CFRP patch showed better performance in comparison with the GFRP wrapping.

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“…However, the research on the use of FRP laminates in the strengthening of RC beams with opening is limited Abdalla et al 2003;El Maaddawy and Sherif 2009;Pimanmas 2010;Chin et al 2011;Hawileh et al 2012;Nie et al 2018). The studies were performed using experiments Abdalla et al 2003;El Maaddawy and Sherif 2009;Pimanmas 2010;Chin et al 2011;Nie et al 2018) and validated with nonlinear finite element (FE) analysis (Pimanmas 2010;Hawileh et al 2012). Some of these studies are briefly described below.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of FRP laminates on the response of solid RC beams under flexure (Alagusundaramoorthy et al 2003;Ashour et al 2004;Hawileh et al 2013) and shear (Li et al 2001;Zhang et al 2004;Islam et al 2005) has been widely studied. However, the research on the use of FRP laminates in the strengthening of RC beams with opening is limited Abdalla et al 2003;El Maaddawy and Sherif 2009;Pimanmas 2010;Chin et al 2011;Hawileh et al 2012;Nie et al 2018). The studies were performed using experiments Abdalla et al 2003;El Maaddawy and Sherif 2009;Pimanmas 2010;Chin et al 2011;Nie et al 2018) and validated with nonlinear finite element (FE) analysis (Pimanmas 2010;Hawileh et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Behavior of FRP-Strengthened RC Beams with Large Rectangular Web Openings in Flexure Zones: Experimental and Numerical Study

Almusallam

Al-Salloum

Elsanadedy

et al. 2018

Int J Concr Struct Mater

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This paper aims to investigate the behavior of fiber reinforced polymer (FRP) strengthened reinforced concrete (RC) beams containing large rectangular web openings in the flexure zone. Studied parameters were type of loading, opening size and strengthening scheme. Seven RC beams categorized into two different groups were tested. In the first group, two unstrengthened beams (one solid without opening and one with large rectangular web opening in the pure flexure zone) were tested under four-point bending. In the second group, five beams were tested under center-point loading. They comprised of one reference solid beam and four beams with large rectangular web opening in the maximum-moment region. Out of the four beams with openings, two specimens were unstrengthened and the other two were strengthened with two different FRP schemes. A numerical study was also conducted and the results of analysis were validated with experiments. The calibrated analysis was then used for some useful parametric studies in which the effect of different parameters was investigated.

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Strengthening R/C beams with opening by externally installed FRP rods: Behavior and analysis

Cited by 51 publications

References 11 publications

Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded composites

Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded composites

Numerical analysis of reinforced concrete beams containing bending and shear opening and strengthened with FRP sheet

Behavior of FRP-Strengthened RC Beams with Large Rectangular Web Openings in Flexure Zones: Experimental and Numerical Study

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