Experimental analysis of longitudinal shear between the web and flanges of T-beams made of fibre-reinforced concrete

Pereiro‐Barceló, Javier; López-Juárez, José Antonio; Ivorra, Salvador; Bonet, José

doi:10.1016/j.engstruct.2019.109280

Cited by 5 publications

(5 citation statements)

References 30 publications

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“…Some national design specifications and data from experimental studies suggest that shear lag of composite T‐beams could be neglected at ULS on the basis of concrete cracking and reinforcement yielding, allowing stresses to redistribute across the flange 11,26,27 . Conflicting experimental results have also been published, according to which a reduction in effective width value was observed as the load level increased 18,28 . Effective width at intermediate support increases as the loading proceeds if observed from stress distribution, on the other hand strain distribution indicates effective width reduces.…”

Section: Resultsmentioning

confidence: 99%

“…11,26,27 Conflicting experimental results have also been published, according to which a reduction in effective width value was observed as the load level increased. 18,28 Effective width at intermediate support increases as the loading proceeds if observed from stress distribution, on the other hand strain distribution indicates effective width reduces. EN 1992-1-1 uses the same effective width for both SLS and ULS.…”

Section: Flange Longitudinal Strainsmentioning

confidence: 99%

“…10,17 More sophistication can be applied in evaluating longitudinal shear by applying a nonlinear analysis of the compression field theory. 18 An expressive but relatively complex nonlinear analysis method called the modified compression field theory (MCFT) was developed in the 1980s. It is able to predict more accurately the full load deformation relationships and shear strength for membrane elements subjected to in-plane shear and normal stresses.…”

Section: Instrumentationmentioning

confidence: 99%

“…When it comes to the longitudinal shear capacity of the web‐flange junction, the literature has highlighted the poor accuracy of these approaches in some situations compared to experimental results 10,17 . More sophistication can be applied in evaluating longitudinal shear by applying a nonlinear analysis of the compression field theory 18 …”

Section: Computational Analysismentioning

confidence: 99%

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Longitudinal shear in the tension flanges of composite concrete beams made continuous

Kytölä

Tulonen

Laaksonen

2021

Structural Concrete

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In continuous concrete T-beams, tension flange plays a remarkable role for the hogging moment capacity at the support area. When precast beams are connected as a continuous structure, longitudinal reinforcement is spread in the flange overhangs at the negative moment area of the continuity connection, which causes longitudinal shear in the tension flange's web-flange junction.The level of reinforcement spreading influences the magnitude of in-plane forces at the junction, which can cause the flanges to crack and eventually separate from the web. This separation must be prevented by providing transversal reinforcement in the flanges. Longitudinal shear between web and flange and the required transversal reinforcement are experimentally and computationally studied in cantilever composite T-beams with the flange in tension. A comparison of the experimental and computational results revealed that longitudinal shear distribution in accordance with conventional beam theory does not always yield safe side results. Analyses made with a particularly drawn truss model and the modified compression field theory are in better agreement with the experimental results.

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Section: Resultsmentioning

confidence: 99%

Section: Flange Longitudinal Strainsmentioning

confidence: 99%

Section: Instrumentationmentioning

confidence: 99%

Section: Computational Analysismentioning

confidence: 99%

See 2 more Smart Citations

Longitudinal shear in the tension flanges of composite concrete beams made continuous

Kytölä

Tulonen

Laaksonen

2021

Structural Concrete

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“…Furthermore, Barcelo et al carried out a test of SFRC T-beams with a wide flange. The researchers prepared 13 T-beams in the experiment, using single and double stirrups with a diameter of 10 mm, and concluded that adding appropriate amounts of steel fiber into such beams can improve the longitudinal shear capacity at the beam flange [21]. Saber et al studied the flexural performance of bilayer SFRC beams.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Inverted Steel Fiber-Reinforced Concrete T-Beams Reinforced with High-Yield Steel Bars

Hou,

Nordin

2024

Buildings

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This study discusses the effectiveness of T-beams reinforced with steel fibers and 600 MPa longitudinal reinforcements on negative flexural responses based on experimental and finite element analysis (FEA) methods. Four T-beams reinforced with 400 MPa or 600 MPa reinforcements were manufactured and inversely loaded. Two of the beams were fabricated with 0.75% (by volume) steel fibers as per JGJ/T465-2019, while the rest were cast following the same design but without steel fibers for comparison. The failure modes, the cracking moment and width, and the stress of the longitudinal reinforcements and concrete were compared between the four tested T-beams. In particular, deflection–load curves indicated the improved flexural ability of the specimens with steel fibers and high-yield steel bars. Models of T-beams with longitudinal reinforcements measuring 6, 8, and 12 mm in diameter were simulated and compared with the results of validated models. The FEA results further demonstrate the better flexural performance of T-beams reinforced with steel fibers and longitudinal reinforcements. Both materials can increase the overall performance of inverted steel fiber-reinforced concrete T-beams, including cracking load, crack width, ultimate load, and deflection. However, the findings showed that different diameters of longitudinal reinforcements generated different levels of effectiveness.

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Machine-learning-aided Shear-capacity Solution of RC Girders with Web Stirrups Based on the Modified Compression Field Theory

Ma,

Zhang,

Guo

et al. 2024

KSCE J Civ Eng

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Experimental analysis of longitudinal shear between the web and flanges of T-beams made of fibre-reinforced concrete

Cited by 5 publications

References 30 publications

Longitudinal shear in the tension flanges of composite concrete beams made continuous

Longitudinal shear in the tension flanges of composite concrete beams made continuous

Flexural Behavior of Inverted Steel Fiber-Reinforced Concrete T-Beams Reinforced with High-Yield Steel Bars

Machine-learning-aided Shear-capacity Solution of RC Girders with Web Stirrups Based on the Modified Compression Field Theory

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