Finite element analysis of constitutive behavior of FRP-Confined steel fiber reinforced concrete

Aliakbar Gholampour, Togay Ozbakkaloglu

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

This study presents the analysis of the constitutive behavior of fiber-reinforced polymer (FRP)-confined steel fiber reinforced concrete (SFRC) using a newly developed concrete damage-plasticity approach. Finite element (FE) analysis is conducted based on Lubliner's model. The new concrete damage-plasticity approach accurately incorporates the effects of the steel fiber volume fraction and aspect ratio, confinement level, concrete strength, and nonlinear dilation behavior of confined concrete. New failure surface and flow rule were established using the experimental database. In order to validate the damage-plasticity model, the predictions from the FE analysis are compared with both experimental results and predictions of an accurate existing model for FRP-confined plain concrete. The analysis results indicate that the proposed approach accurately predicts the compressive behavior of FRP-confined SFRC.

Original languageEnglish
Pages (from-to)511-516
Number of pages6
JournalKey Engineering Materials
Volume737
DOIs
Publication statusPublished - Jun 2017

Keywords

  • Damage-plasticity
  • FRP-Confined concrete
  • Finite element analysis
  • Steel fiber reinforced concrete
  • Stress-strain relations

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