Assessment of Shear Strength Design Models for Fiber-Reinforced Concrete Deep Beams Reinforced with Steel or FRP Bars

Ahmed G. Bediwy, Ehab F. El-Salakawy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Deep beams are common elements in concrete structures such as bridges, water tanks and parking garages, which are usually exposed to harsh environments. To mitigate corrosion-induced damage in these structures, steel reinforcement is replaced by fiber-reinforced polymers (FRPs). Several attempts have been made during the last decade to introduce empirical models to estimate the shear strength of FRP-reinforced concrete (RC) deep beams. In this study, the applicability of these models to predict the capacity of simply supported deep beams with and without web reinforcement was assessed. Test results of 54 FRP-RC, 24 steel-fiber-reinforced concrete (FRC), and 7 FRP-FRC deep beams were used to evaluate the available models. In addition, a proposed model to predict the shear strength of FRP-FRC deep beams was introduced. The model was calibrated against experiments conducted previously by the authors on FRP-FRC deep beams under gravity load. The model could predict the ultimate capacity with a mean experimental-to-predicted value of 1.04 and a standard deviation of 0.14.

Original languageEnglish
Title of host publicationDevelopment and Applications of FRP Reinforcements, DA-FRPR 2021
EditorsRadhouane Masmoudi
PublisherAmerican Concrete Institute
Pages170-190
Number of pages21
ISBN (Electronic)9781641951951
Publication statusPublished - 2022
Externally publishedYes
EventDevelopment and Applications of FRP Reinforcements, DA-FRPR 2021 - ACI Virtual Concrete Convention 2021 - Virtual, Online, United States
Duration: Oct 17 2021Oct 21 2021

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-356
ISSN (Print)0193-2527

Conference

ConferenceDevelopment and Applications of FRP Reinforcements, DA-FRPR 2021 - ACI Virtual Concrete Convention 2021
Country/TerritoryUnited States
CityVirtual, Online
Period10/17/2110/21/21

Keywords

  • database
  • deep beams
  • empirical models
  • FRC
  • FRP
  • shear strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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