Bond-slip models for FRP sheets/plates bonded to concrete

X. Z. Lu, Jinguang Teng, L. P. Ye, J. J. Jiang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

763 Citations (Scopus)

Abstract

An accurate local bond-slip model is of fundamental importance in the modelling of FRP-strengthened RC structures. In this paper, a review of existing bond strength models and bond-slip models is first presented. These models are then assessed using the results of 253 pull tests on simple FRP-to-concrete bonded joints, leading to the conclusion that a more accurate model is required. In the second half of the paper, a set of three new bond-slip models of different levels of sophistication is proposed. A unique feature of the present work is that the new bond-slip models are not based on axial strain measurements on the FRP plate; instead, they are based on the predictions of a meso-scale finite element model, with appropriate adjustment to match their predictions with the experimental results for a few key parameters. Through comparisons with the large test database, all three bond-slip models are shown to provide accurate predictions of both the bond strength (i.e. ultimate load) and the strain distribution in the FRP plate.
Original languageEnglish
Pages (from-to)920-937
Number of pages18
JournalEngineering Structures
Volume27
Issue number6
DOIs
Publication statusPublished - 1 May 2005

Keywords

  • Bond
  • Bond strength
  • Bond-slip models
  • Composites
  • Concrete
  • Finite element simulation
  • FRP
  • Pull tests

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this