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Volume Title: ICASGE2023

DOI: ICASGE-RCS

¹Amena Sheikh-Sobeh; ¹Nancy Kachouh; ²Tamer El-Maaddawy

¹Civil and Environmental Engineering, College of Engineering, UAE University, Al Ain, UAE

²Department of Civil and Environmental Engineering, College of Engineering, UAE University, Al Ain, UAE

Six simulation models were developed to predict the nonlinear behavior of concrete deep beams containing web openings reinforced with glass fiber-reinforced polymer (GFRP) bars. The beam models had dimensions of 300 × 1200 × 5000 mm and a shear span-to-depth ratio (a/h) of 1.04. The flexural tensile reinforcement consisted of 8 GFRP bars with a diameter of 25 mm. The web reinforcement included 12 mm diameter vertical GFRP stirrups and 16 mm diameter horizontal GFRP bars. The spacing between the web reinforcement in both directions was 200 mm. Predictions of two numerical models were validated through a comparative analysis with published experimental data. One of these models was solid, whereases the other one included a web opening in the middle of the shear span with a width (wo) of 340 mm and height (ho) of 304 mm. A parametric study was conducted to investigate the effect of varying the opening size on the shear response. Results of the parametric study indicated that the rate of the shear strength reduction caused by increasing the opening height was more significant than that caused by an increase in the opening width. Simplified analytical formulas that can estimate the ultimate load of GFRP-reinforced concrete deep beams with and without web openings were introduced. Predictions of the simplified formulas were verified against the experimental data and results of the numerical analysis.

deep beams; GFRP; Numerical; Openings; Simulation; Shear

Reinforced Concrete Structures (RCS)