TY - JOUR
T1 - State-of-the-art review of anchored FRP shear-strengthened RC beams
T2 - A study of influencing factors
AU - Godat, Ahmed
AU - Hammad, Farah
AU - Chaallal, Omar
N1 - Funding Information:
The authors express their appreciation to the Research Affairs Office at the United Arab Emirates University for financial support of the project under fund grant # 31N267 .
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/12/15
Y1 - 2020/12/15
N2 - Several anchorage techniques have been proposed in the literature to delay or prevent the debonding failure mode and to upgrade and restore the capacity of externally bonded (EB) fiber-reinforced polymers (FRPs) shear-strengthened beams in a U-wrapping scheme, such as NSM, FRP extension, FRP insertion, horizontal FRP, FRP patch, FRP rope, FRP spike, metallic anchors, and combined anchors. Although the advantages of these anchorage techniques have been acknowledged by researchers, their effectiveness in enhancing FRP shear contribution is controversial. The present study is a state-of-the-art review of experimental tests that were carried out to investigate the effectiveness of anchorage techniques for FRP shear-strengthened beams. The various anchorage techniques are evaluated in terms of FRP shear strength and FRP strain based on the parameters that have a major influence on the behavior of FRP shear-strengthened beams. Furthermore, strength models for FRP shear-strengthened beams provided in various design guidelines are used to predict FRP shear strength compared to experimental results. The significance of the present findings with respect to FRP shear contribution is discussed.
AB - Several anchorage techniques have been proposed in the literature to delay or prevent the debonding failure mode and to upgrade and restore the capacity of externally bonded (EB) fiber-reinforced polymers (FRPs) shear-strengthened beams in a U-wrapping scheme, such as NSM, FRP extension, FRP insertion, horizontal FRP, FRP patch, FRP rope, FRP spike, metallic anchors, and combined anchors. Although the advantages of these anchorage techniques have been acknowledged by researchers, their effectiveness in enhancing FRP shear contribution is controversial. The present study is a state-of-the-art review of experimental tests that were carried out to investigate the effectiveness of anchorage techniques for FRP shear-strengthened beams. The various anchorage techniques are evaluated in terms of FRP shear strength and FRP strain based on the parameters that have a major influence on the behavior of FRP shear-strengthened beams. Furthermore, strength models for FRP shear-strengthened beams provided in various design guidelines are used to predict FRP shear strength compared to experimental results. The significance of the present findings with respect to FRP shear contribution is discussed.
KW - Anchorage techniques
KW - FRP design guidelines
KW - FRP shear strength
KW - FRP strain
KW - Fiber-reinforced polymer (FRP)
KW - Reinforced concrete beams
KW - Shear strengthening
KW - State-of-the-art review
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U2 - 10.1016/j.compstruct.2020.112767
DO - 10.1016/j.compstruct.2020.112767
M3 - Article
AN - SCOPUS:85091332097
SN - 0263-8223
VL - 254
JO - Composite Structures
JF - Composite Structures
M1 - 112767
ER -