Flexural Behavior of Continuous FRP-Reinforced Concrete Beams

El-Mogy, Mostafa; El-Ragaby, Amr; El-Salakawy, Ehab

doi:10.1061/(asce)cc.1943-5614.0000140

Cited by 82 publications

(49 citation statements)

References 9 publications

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“…With the CFRP sheet arrangements in D3 and D5, these beams exhibited a relatively smaller crack spacing and size, increased mid-span deflection and greater effective strain in the CFRP sheet at failure. The CFRP arrangements in D3 and D5 might have provided redistribution of stresses in the beam (El-Mogy et al, 2011), resulting in more favourable ductile behaviour with ample warnings before failure.…”

Section: Load-deflection Behaviourmentioning

confidence: 99%

Shear strengthening of reinforced concrete continuous beams

Ahmad¹,

Elahi²,

Barbhuiya³

et al. 2013

Proceedings of the Institution of Civil Engineers - Structures

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This paper presents the results of an experimental investigation to evaluate the contribution of carbon-fibrereinforced polymer sheets in enhancing the shear strength of continuous reinforced concrete beams. A total of five, two-span concrete continuous beams with rectangular cross-section were tested. One beam without strengthening was used as the control and the other four beams were strengthened with different arrangements of polymer sheets.The variables selected were various wrapping schemes and anchorage length of the polymer sheet. The aim was to develop a better understanding of the shear contribution of polymer and to investigate the potential for cost savings by minimising the area of externally bonded polymer sheets. Test results were compared with four existing shear prediction models available in the literature. The results indicate that the polymer sheet significantly enhanced the shear strength of the beams, and that the area of polymer sheet can be minimised with marginal compromise on the shear carrying capacity of strengthened concrete beams.

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Section: Load-deflection Behaviourmentioning

confidence: 99%

Shear strengthening of reinforced concrete continuous beams

Ahmad¹,

Elahi²,

Barbhuiya³

et al. 2013

Proceedings of the Institution of Civil Engineers - Structures

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show abstract

“…However, the difference between the experimental and theoretical results increases progressively for larger loads. Such discrepancies could be referred to the occurrence of wide cracks over the middle support of continuous beams as reported in [18]. However the proposed modified equation gives a better prediction of deflections than the ACI model for these continuous beams.…”

Section: Continuously Supported Frp Reinforced Concrete Beamsmentioning

confidence: 83%

“…Further verification of the proposed analytical method has been conducted by comparison with the results of continuous FRP reinforced concrete beams [17,18]. Each continuous beam consisted of two equal spans, was loaded by a single point load at the middle of both spans and was reinforced with GFRP bars.…”

Section: Continuously Supported Frp Reinforced Concrete Beamsmentioning

confidence: 99%

“…Geometrical dimensions, reinforcement details and materials properties of continuous beams considered are listed in Table 1. Since the measured displacements in the two spans of each beam were similar [17,18], one side midspan displacements are compared against predictions obtained from the proposed technique.…”

Section: Continuously Supported Frp Reinforced Concrete Beamsmentioning

confidence: 99%

“…Several design guidelines for FRP reinforced concrete have adopted these approaches [14,15]. Generally, the work presented in the literature focused on the prediction of deflection of simply supported FRP reinforced concrete beams, and very few though important studies investigated the behavior of continuous concrete beams reinforced with FRP bars [16][17][18]. In a comprehensive study, Razaqpur et al [19] proposed an analytical model for computing the deflection of FRP reinforced concrete simply supported beams based on a tri-linear variation for the moment-curvature response.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Deflection of concrete structures reinforced with FRP bars

Kara

Ashour

Dündar

2013

Composites Part B: Engineering

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Numerical study on the structural performance of the continuous concrete slabs reinforced with hybrid BFRP/steel bars

Ali

Wang

Abdelaleem

et al. 2023

Structural Concrete

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This study is mainly focused on the behavior of continuous concrete slabs reinforced with hybrid bars. Moment redistribution is a specific phenomenon in statically indeterminate structures due to the existence of redundant constraints and non‐uniform flexural stiffness of the reinforced concrete (RC) members. In this paper, a numerical one‐factor‐at‐a‐time parametric study was conducted using ABAQUS software to intensely understand the impact of several parameters on the performance of the hybrid RC continuous slabs. The investigated parameters were reinforcement type and ratio, FRP‐to‐steel ratio, and arrangement of reinforcement. The analysis results showed that the difference between sagging and hogging axial stiffness is the most influential parameter on the moment redistribution of hybrid‐RC continuous slabs. In addition, increasing the amount of reinforcement ratio at the mid‐span section is more effective in enhancing the load capacity of the slabs than over middle support section. Based on the obtained numerical results, some modifications to the Tarek et al. equations were proposed to be valid for hybrid‐RC continuous slabs. The presented modifications yielded good agreement with the numerical results predicting the moment redistribution of continuous concrete slabs with hybrid reinforcement.

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Flexural Behavior of Continuous FRP-Reinforced Concrete Beams

Cited by 82 publications

References 9 publications

Shear strengthening of reinforced concrete continuous beams

Shear strengthening of reinforced concrete continuous beams

Deflection of concrete structures reinforced with FRP bars

Numerical study on the structural performance of the continuous concrete slabs reinforced with hybrid BFRP/steel bars

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