Unified Shear Design Equation for Concrete Members Reinforced with Fiber-Reinforced Polymer without Stirrups

Alam, Shah; Hussein, Amgad

doi:10.1061/(asce)cc.1943-5614.0000342

Cited by 34 publications

(8 citation statements)

References 11 publications

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“…4(a) and (b). In the figures, the test results of shear capacity, V c.exp was normalized by the square root of concrete strength, √f cu and the cross section area of the beam, b w d [7][8][9]. It was discovered that the normalized shear strength, V c.norm increases as the shear span ratio of (d/a) increases as shown in Fig.…”

Section: Proposed Shear Design Equationmentioning

confidence: 99%

“…In order to verify the proposed equation, Equation (3) was compared with the test results of this study and available test results in the literature [3,[6][7][8][9][10][11] as listed in Table 2. All 42 beams were reinforced with different reinforcement ratios of GFRP and CFRP bars with shear span ratios within 2.3 to 5.0.…”

Section: Evaluation Of the Proposed Shear Design Equationmentioning

confidence: 99%

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Shear Strength Prediction for Concrete Beams Reinforced with GFRP Bars

et al. 2017

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Abstract. This study presents a shear strength prediction model for concrete beams reinforced with GFRP bars. An empirical equation is developed using multiple regression analysis from the experimental results of 16 RC beams with GFRP bars. The proposed equation involved the parameters that affected the shear strength of beams such as compressive concrete strength, shear span ratio, longitudinal reinforcement ratio and modulus elasticity of the reinforcement. The accuracy of the proposed equation was verified by predicting the available experimental data from the literature. Furthermore, the predictions of shear capacities were compared with the current shear design code of ACI 440.1R-06. As a result, the ACI 440 provides very conservative prediction, while a better prediction is obtained from the shear strength prediction model in the present study.

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Section: Proposed Shear Design Equationmentioning

confidence: 99%

Section: Evaluation Of the Proposed Shear Design Equationmentioning

confidence: 99%

Shear Strength Prediction for Concrete Beams Reinforced with GFRP Bars

et al. 2017

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“…e shear strength prediction model of FRP bar-reinforced concrete beams in ACI440.1R-2015 [5] was based on the research by Tureyen and Frosch [6]. e ACI440.1R-2015 model was a function of the width (b) and effective depth (d) of the beam, concrete compressive strength (f c ′ ), reinforcement ratio (ρ f ), and modulus of elasticity (E f ) of FRP bars, and the shear span-to-depth ratio (a/d) was not included [7,8]. Several investigations confirmed that shear strength V c of FRP bar-reinforced concrete beams decreases as the a/d increases [7,[9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…e ACI440.1R-2015 model was a function of the width (b) and effective depth (d) of the beam, concrete compressive strength (f c ′ ), reinforcement ratio (ρ f ), and modulus of elasticity (E f ) of FRP bars, and the shear span-to-depth ratio (a/d) was not included [7,8]. Several investigations confirmed that shear strength V c of FRP bar-reinforced concrete beams decreases as the a/d increases [7,[9][10][11][12][13]. Some investigators [7] revealed that V c decreases almost linearly with (a/d) 2/3 , while the others [10] reported that it decreases linearly with (a/d) 1/3 .…”

Section: Introductionmentioning

confidence: 99%

Shear Strength Prediction Model of FRP Bar-Reinforced Concrete Beams without Stirrups

Zhang

2020

Mathematical Problems in Engineering

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The shear strength prediction model for fiber-reinforced polymer (FRP) bar-reinforced concrete beams without stirrups in ACI440.1R-2015 does not consider the “size effect” and the effect of shear span-to-depth ratio and predicts the zero-shear strength for concrete members without longitudinal reinforcement. A modified shear strength prediction model for FRP bar-reinforced concrete beams without stirrups was presented in this paper. The proposed model takes into account the effect of concrete strength, size of the beam, shear span-to-depth ratio, reinforcement ratio, and modulus of elasticity of the longitudinal reinforcement and the “size effect.” The superiority of the proposed model has been evaluated by comparing the calculated shear strength of FRP bar-reinforced concrete beams without stirrups by the proposed model with the experimental results and calculated values by the models in design codes, respectively. It confirmed that the shear strength of FRP bar-reinforced concrete beams without stirrups by the proposed model was in better agreement with the experimental results.

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“…Furthermore, due to relatively high tensile strength of FRP reinforcements, some amount of tensile forces significantly distributed and expand to the support after the occurrence of diagonal shear cracks [15]. Hence, a careful anchorage design is needed in order to avoid bond failure.…”

Section: Introductionmentioning

confidence: 99%

Shear Capacity of Non-Metallic (FRP) Reinforced Concrete Beams with Stirrups

Hamid¹,

Thamrin²,

Ibrahim³

2013

IJET

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Abstract-This study presents test results of simply supported concrete beams longitudinally reinforced either by steel or glass fiber-reinforced polymer (GFRP). A total of sixteen large-scale concrete beams with steel stirrups were constructed and tested under four-point monotonic loading until failure. Half of the beams were longitudinally reinforced with GFRP bars, while the other half was reinforced with conventional steel bars as control specimens. To examine the shear behavior of the GFRP reinforced concrete (RC) beams, the main parameters investigated in the study included shear span-effective depth ratios, longitudinal reinforcement ratios and stirrup ratios. Two modes of failure, namely flexure and shear were observed. Due to low modulus elasticity of FRP bars, it was found that lesser shear strength resulted in concrete beams reinforced with GFRP bars compared to beams reinforced with steel bars. Moreover, the influence of the shear span-effective depth ratios and longitudinal reinforcement ratios significantly affect the distribution of internal forces in GFRP reinforced concrete beams. The test results correlated well with the prediction values provided by standard codes and design guidelines except in the case of GFRP reinforced concrete beams failed on shear.

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Unified Shear Design Equation for Concrete Members Reinforced with Fiber-Reinforced Polymer without Stirrups

Cited by 34 publications

References 11 publications

Shear Strength Prediction for Concrete Beams Reinforced with GFRP Bars

Shear Strength Prediction for Concrete Beams Reinforced with GFRP Bars

Shear Strength Prediction Model of FRP Bar-Reinforced Concrete Beams without Stirrups

Shear Capacity of Non-Metallic (FRP) Reinforced Concrete Beams with Stirrups

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