Numerical analysis of interfacial bond behavior of externally bonded FRP-to-concrete joints

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Author(s)

  • Jian-Ping Lin
  • Yu-Fei Wu

Detail(s)

Original languageEnglish
Article number04016028
Journal / PublicationJournal of Composites for Construction
Volume20
Issue number5
Online published10 Mar 2016
Publication statusPublished - Oct 2016
Externally publishedYes

Abstract

Due to the complexity and difficulty involved, the interfacial bond-slip relationship of externally bonded (EB) fiber-reinforced polymer (FRP)-to-concrete joints has been investigated, mainly through experimental testing. This work investigates the interfacial behavior using the finite-element method (FEM). Damage plasticity theory is employed to model concrete material and the pull-off test of EB-FRP-to-concrete joints is simulated by FEM to study the interfacial behavior. Debonding process, failure mechanism, local bond strength distribution, and characteristics of the local bond-slip relationship are examined. It is found that the local bond-slip relationship has a shape different from all existing bond-slip models. However, such change in shape does not make a significant difference to the global interfacial load-slip response.

Research Area(s)

  • Bond-slip relationship, Debonding, Finite-element method, Pull-off test