Title:
Behavior of Concrete Deep Beams Reinforced with Internal Fiber-Reinforced Polymer—Experimental Study
Author(s):
Matthias F. Andermatt and Adam S. Lubell
Publication:
Structural Journal
Volume:
110
Issue:
4
Appears on pages(s):
585-594
Keywords:
cracks; deep beams; failure mechanisms; fiber-reinforced polymer reinforcement; reinforced concrete; shear span-depth ratio (a/d); shear strength; size effect
DOI:
10.14359/51685744
Date:
7/1/2013
Abstract:
Concrete deep beams with small shear span-depth ratios (a/d) are common elements in structures. To mitigate corrosion-induced damage in concrete structures, members internally reinforced with fiber-reinforced polymer (FRP) are increasingly specified. However, very little experimental data exist for FRP-reinforced concrete deep beams, as prior research has mainly focused on slender beams having a/d greater than 2.5. This paper reports on an experimental study designed to investigate the shear behavior of concrete deep beams internally reinforced with FRP and containing no distributed web reinforcement. Test results of 12 large-scale specimens that were loaded in a four-point bending configuration are presented, where the primary variables included the a/d, reinforcement ratio, member height, and concrete strength. The results show that an arch mechanism was able to form in FRP-reinforced concrete beams having a/d less than 2.1.