Analysis-oriented stress-strain models for FRP-confined concrete

T. Jiang, Jinguang Teng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

394 Citations (Scopus)

Abstract

Many stress-strain models have been developed for fibre-reinforced polymer (FRP)-confined concrete. These models fall into two categories: (a) design-oriented models in simple closed-form expressions for direct use in design; and (b) analysis-oriented models in which the stress-strain curve is generated via an incremental process. This paper is concerned with analysis-oriented models, and in particular, those models based on the commonly accepted approach in which a model for actively-confined concrete is used as the base model. The paper first provides a critical review and assessment of existing analysis-oriented models for FRP-confined concrete. For this assessment, a database of 48 recent tests conducted by the authors' group is presented; this database includes 23 new tests which have not previously been published. This assessment clarifies how each of the key elements forming such a model affects its accuracy and identifies a recent model proposed by the authors' group as being the most accurate. The paper then presents a refined version of this model, which provides more accurate predictions of the stress-strain behaviour, particularly for weakly-confined concrete.
Original languageEnglish
Pages (from-to)2968-2986
Number of pages19
JournalEngineering Structures
Volume29
Issue number11
DOIs
Publication statusPublished - 1 Nov 2007

Keywords

  • Concrete
  • Confinement
  • Dilation properties
  • FRP
  • Stress-strain behaviour
  • Stress-strain models

ASJC Scopus subject areas

  • Civil and Structural Engineering

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