The Effectiveness of CFRP Ropes to Anchor FRP Shear-Strengthened RC T-Beams with Continuous Sheets


Hammad F., Godat A.

10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), İstanbul, Turkey, 8 - 10 December 2021, vol.198, pp.1404-1415 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 198
  • Doi Number: 10.1007/978-3-030-88166-5_122
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1404-1415
  • Keywords: RC beams, Fibre-reinforced polymers, Shear-strengthening, Anchorage, CFRP ropes
  • Istanbul Technical University Affiliated: No

Abstract

This study investigates the effect of CFRP ropes to anchor FRP shear-strengthened beams with U-wrap continuous sheets. The experimental program includes seven identical simply supported reinforced concrete T-beams tested under three-point loading. The steel stirrups are spaced at 220 mm along a shear span of 880 mm The beams are divided into two groups based on the anchorage technique used. Group A represents FRP shear-strengthened beams with single, double and triple layers of U-wrap sheets and anchored using CFRP ropes. Group B includes specimens with single layer of CFRP sheets and anchored using the NSM, FRP extension, and horizontal FRP anchorage techniques. The experimental program tested a strengthened beam with no anchorage (EB) as a benchmark. The results of the experimental tests are presented in terms of ultimate load-carrying capacities, failure modes, and load-deflection relationships. The applied load versus strain relationships for the steel stirrups, and CFRP sheets are also investigated. The experimental results showed that the FRP rope anchorage technique is a promising solution to enhance the FRP shear contribution.