Rational approach to shear design in fiber-reinforced polymer-prestressed concrete structures

Paul Arthur Whitehead, Timothy James Ibell

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The use of plasticity-based shear design methods for fiber-reinforced polymer (FRP) reinforced and prestressed concrete, as they are used at present, is inappropriate in the long term. In particular, the use of a plasticity-based truss model for shear behavior seems to be unsound, as reliance is placed on a predominantly elastic zone to redistribute stresses. A better approach to shear design would be to employ a model incorporating force equilibrium and compatibility of strains so that the elastic properties of the FRP could be included rationally. This would help to develop a real understanding and form a basis on which new guides and codes could be founded. In tandem with a more rational analytical approach, new configurations and types of FRP reinforcement need to be developed and researched so that these materials can be used more efficiently. An analytical approach to investigate the shear response of FRP-reinforced and -prestressed concrete has been developed, based on equilibrium and compatibility across a shear discontinuity. The analytical model presented here was developed in conjunction with an experimental program. Correlation between the analytical and experimental results is good and more accurate than the current guideline provisions for concrete beams containing FRP reinforcement.

Original languageEnglish
Pages (from-to)90-100
Number of pages11
JournalJournal of Composites for Construction
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Feb 2005

Keywords

  • Bonding
  • Composite materials
  • Concrete structures
  • Concrete, Prestressed
  • Fiber-reinforced polymers
  • Plasticity

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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