Flexural and interfacial behavior of externally bonded/ mechanically fastened fiber-reinforced polymer-strengthened reinforced concrete beams

Usama Ebead, Huda Saeed

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The determination of structural behavior requires advanced numerical methods, of which results are substantiated by credible experimental findings. This research aims to create precise finite element models for fiber-reinforced polymer (FRP)-strengthened concrete beams. The models are developed to assess the flexural and interfacial types of behavior of beams strengthened using three different schemes; namely, externally bonded (EB), mechanically fastened (MF), and hybrid EB/MF FRP systems. The interfacial behavior between the EB, MF, and hybrid EB/MF FRP and the concrete is accounted for using specially developed interface elements. A user-defined subroutine for the microplane constitutive law for concrete is incorporated in the model. Results are presented in terms of the ultimate load capacities, load-deflection relationships, and interfacial stress distributions. Numerical results are validated against published experimental results, and show reasonable agreement. Models for hypothetical cases are created to enrich the discussion on the interfacial stress distributions.

Original languageEnglish
Pages (from-to)741-751
Number of pages11
JournalACI Structural Journal
Volume111
Issue number4
DOIs
Publication statusPublished - 2014

Keywords

  • Externally bonded
  • Fiber-reinforced polymer
  • Finite element analysis
  • Hybrid
  • Interfacial behavior
  • Mechanically fastened
  • Reinforced concrete beams
  • Strengthening

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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