COMPOSITE FRP-CONCRETE COLUMN WITH BI-DIRECTIONAL EXTERNAL REINFORCEMENT

Hybrid/composite construction with Fiber Reinforced Plastics significantly enhances the strength, ductility and durability of concrete columns. A composite column is proposed in which the filament-wound tubular shell is the pour form, protective jacket, confining member, and bi-directional external reinforcement. The tube may be a multi-layer angle-ply, or a normal-axial wound pipe. Longitudinal fibers serve as the flexural reinforcement, while hoop fibers provide confinement and shear strength. Analytical and experimental studies indicate higher compressive and flexural strengths as well as excellent pseudo-ductile characteristics. A new confinement model is proposed, since existing models are shown to be only suitable for confinement with transverse steel reinforcement. A parametric study evaluates the effect of jacket thickness and fiber orientation on the beam-column behavior of the composite system. Test results indicate that a fiberglass tube with 3 mm thickness can almost triple the strength of a standard concrete cylinder.

• Corporate Authors:

  University of Arizona, Tucson

  Department of Civil Engineering and Engineering Mechanics
  1209 E 2nd Street
  Tucson, AZ  United States  85721-0072
• Authors:
  • Mirmiran, A
  • Kargahi, M
  • Samaan, M
  • Shahawy, M
• Conference:
  • First International Conference on Composites in Infrastructure
  • Location: Tucson, Arizona
  • Date: 1996-1-15 to 1996-1-17
• Publication Date: 1996-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 888-902

Subject/Index Terms

• TRT Terms: Columns; Composite materials; Confining pressure; Ductility; Durability; Fiber reinforced plastics; Jacketing (Strengthening); Reinforced concrete; Shells (Structural forms); Strength of materials; Thickness; Tubular structures
• Uncontrolled Terms: Bi-directional; Fiber orientation
• Subject Areas: Geotechnology; Highways; Materials; I32: Concrete; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00762518
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 19 1999 12:00AM