Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded composites

Rami A. Hawileh, Tamer A. El-Maaddawy, Mohannad Z. Naser

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

This paper aims to develop 3D nonlinear finite element (FE) models for reinforced concrete (RC) deep beams containing web openings and strengthened in shear with carbon fiber reinforced polymer (CFRP) composite sheets. The web openings interrupted the natural load path either fully or partially. The FE models adopted realistic materials constitutive laws that account for the nonlinear behavior of materials. In the FE models, solid elements for concrete, multi-layer shell elements for CFRP and link elements for steel reinforcement were used to simulate the physical models. Special interface elements were implemented in the FE models to simulate the interfacial bond behavior between the concrete and CFRP composites. A comparison between the FE results and experimental data published in the literature demonstrated the validity of the computational models in capturing the structural response for both unstrengthened and CFRP-strengthened deep beams with openings. The developed FE models can serve as a numerical platform for performance prediction of RC deep beams with openings strengthened in shear with CFRP composites.

Original languageEnglish
Pages (from-to)378-387
Number of pages10
JournalMaterials and Design
Volume42
DOIs
Publication statusPublished - Dec 1 2012

Keywords

  • Carbon fiber
  • Deep beams
  • Finite element analysis
  • Interfacial behavior
  • Openings
  • Strengthening

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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