Title: Shear Capacity of Glass Fiber-Reinforced Polymer- Reinforced Concrete Continuous Deep Beams without Web Reinforcement

Author(s): Ahmed Mohamed, Karam Mahmoud, and Ehab F. El-Salakawy

Publication: Structural Journal

Volume: 118

Issue: 3

Appears on pages(s): 85-99

Keywords: deep beams; fiber-reinforced polymer reinforcement (FRP); reinforced concrete (RC); shear capacity; shear span-to-depth ratio (a/d); strut-and-tie model

DOI: 10.14359/51729354

Date: 5/1/2021

Abstract:
Test results of nine continuous concrete deep beams reinforced with glass fiber-reinforced polymer (GFRP) bars are presented. The main objectives of this study are to evaluate the shear capacity of GFRP-reinforced concrete (RC) continuous deep beams and to examine the applicability of the strut-and-tie model to such beams. The test parameters are the shear span-to-depth ratio and the top longitudinal reinforcement ratio. Test results revealed that decreasing the area of the top reinforcement increased the shear capacity of test beams. On the other hand, as expected, the shear capacity decreased with an increase in the shear span-to-depth ratio. Moreover, provisions of strut-and-tie models available in current codes need to be revised to better predict the capacity of GFRP-RC continuous deep beams.