Shear strengthening of steel plates using small-diameter CFRP strands

Kazem, Hamid; Rizkalla, Sami; Kobayashi, Akiko

doi:10.1016/j.compstruct.2017.09.094

Cited by 15 publications

(3 citation statements)

References 13 publications

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“…Potential benefits can be achieved when low-weight stiffeners and adhesives are applied compared to the traditional method (steel plated stiffeners and welding): no traffic disruption is needed (easily to be applied) and the introduction of additional residual stresses is avoided. Up to the present date, the alternative techniques for web beam strengthening were concerned to the use of fibre reinforced polymers (FRP), due to the low-weight reinforcements [3][4][5][6][7][8][9][10][11][12]. Despite FRP have becoming more affordable in civil engineering over the years, this material is still expensive.…”

Section: Introductionmentioning

confidence: 99%

Shear Strengthening of Slender Steel Beams Using Cold‐formed Stiffeners and Adhesives

2021

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This paper explores an alternative for strengthening shear‐deficient beams by fixing cold‐formed stiffeners with non‐welded joints at buckling‐prone regions. The usage of welds may not be suitable in slender beams as it introduces residual stresses and local distortion on the web. The cold‐formed stiffeners are disposed in diagonal orientation and its corrugate‐shaped geometry with high moment of inertia improves the out‐of‐plane stiffness of the beam web. The assessment of this method was performed in an experimental campaign which included three‐point bending tests of four beams. In two specimens, the cold‐formed stiffeners were fixed on the web by means of hybrid bonded‐bolted joints. Additionally, two control specimens were tested: a beam without diagonal stiffeners and a beam with diagonal welded‐steel plate.

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Section: Introductionmentioning

confidence: 99%

Shear Strengthening of Slender Steel Beams Using Cold‐formed Stiffeners and Adhesives

2021

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“…Over the past decades, composite materials have been widely used to strengthen existing structural elements made of traditional materials [1][2][3]. The use of fiber-reinforced polymer (FRP) composite products (laminates, plates, fabrics and sheets) to repair and strengthen reinforced concrete and masonry structures is well established [4][5][6]. On the other hand, the application of FRP materials to steel structures remains understudied since traditional methods of repairing and strengthening are still highly used.…”

Section: Introductionmentioning

confidence: 99%

Structural Response of Bonded Joints between FRP Composite Strips and Steel Plates

et al. 2021

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This paper presents the outcomes of an experimental and numerical study performed on epoxy-bonded single lap joints (SLJs) between carbon fiber-reinforced polymer (CFRP) composite strips and steel elements. For the experimental program, 34 specimens were prepared by varying the type of the composite strip and the type of adhesives and their thicknesses; all specimens were loaded in axial tension up to failure. The specific failure mechanisms were identified and commented on the basis of the performed tests, and the load–displacement curves were plotted. Additionally, the strain distributions along the bond lengths at different load stages, the shear stress–displacements (slip) variations and the stress–strain distributions for the CFRP strips were plotted and investigated. The numerical simulations, based on 3D finite element method (FEM) analysis, provided consistent results, in good agreement with the experimental ones for all parameters that were investigated and discussed in this paper.

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“…Most scientific research on the topic of FRP reinforcements and adhesives have been developed in the last five years. In most cases, carbon fibers were applied in the composition of FRP reinforcement [4][5][6][7][8][9][10], while some studies considered glass fibers [4,5,[10][11][12][13] or basalt fibers [14]. Furthermore, the FRP material as reinforcement was applied in different manners, as profiled shape ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Strengthened Slender I‐girders With Fiber Reinforced Polymers

et al. 2019

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This study demonstrates the feasibility of applying diagonal reinforcements composed by fiber reinforced polymers (FRP) on the web surface of slender steel I‐girders. The use of such reinforcements contributes to a higher shear buckling strength capacity of the beam panels. This strengthening technique was evaluated by means of numerical analysis using the finite element software Abaqus®. In the analyzed models the connection between the reinforcement of composite material and the beam was made by structural adhesives. Additionally, beams with traditional diagonal reinforcements made of welded steel plate were simulated for comparison purposes, as well as another model without any diagonal reinforcement.

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Shear strengthening of steel plates using small-diameter CFRP strands

Cited by 15 publications

References 13 publications

Shear Strengthening of Slender Steel Beams Using Cold‐formed Stiffeners and Adhesives

Shear Strengthening of Slender Steel Beams Using Cold‐formed Stiffeners and Adhesives

Structural Response of Bonded Joints between FRP Composite Strips and Steel Plates

Numerical Study of Strengthened Slender I‐girders With Fiber Reinforced Polymers

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