Confinement Model of Concrete with Externally Bonded FRP Jackets or Posttensioned FRP Shells

A design-oriented confinement model for square and rectangular columns confined with bonded fiber-reinforced polymer (FRP) jackets, and shape-modified square and rectangular sections confined with posttensioned FRP shells is developed. The proposed design model for FRP-confined concrete columns is based on the bilinear four-parameter formulation by Richard and Abbott. The axial compressive strength of FRP-confined concrete is obtained using concrete plasticity theory based on the five parameter Willam and Warnke model. The ultimate axial strain of FRP-confined concrete is obtained from a strain-based approach depending on either passive or active confinement; the ultimate axial strain is based on the concepts of secant concrete modulus and strain dependent stiffness established by Pantazopoulou and Mills. Comparisons of the proposed stress-strain model with uniaxial compression experiments for columns with bonded FRP jackets or posttensioned FRP shells, performed by the writers and other researchers, show satisfactory agreement for the entire stress-strain curve.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Supplemental Notes:
  • Abstract reprinted with permission from the American Society of Civil Engineers
• Authors:
  • Pantelides, Chris P
  • Yan, Zihan
• Publication Date: 2007-9

Language

• English

Media Info

• Media Type: Print
• Features: Photos; References; Tables;
• Pagination: pp 1288-1296
• Serial:
  • Journal of Structural Engineering
  • Volume: 133
  • Issue Number: 9
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Axial compression; Bonds; Columns; Compressive strength; Concrete; Design; Fiber reinforced plastics; Mathematical models; Plasticity; Posttensioning; Shape; Shells (Structural forms); Stiffness
• Uncontrolled Terms: Active confinement; Axial strain; Confinement model; External; Jackets (Structures); Parameters; Passive forces; Rectangular structures; Square structures
• Subject Areas: Design; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01076524
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 21 2007 1:54PM