Behavior of Cyclically Loaded Squat Reinforced Concrete Bridge Columns Upgraded with Advanced Composite-Material Jackets

This paper summarizes comprehensive experimental studies on scaled models of squat bridge columns repaired and retrofitted with advanced composite-material jackets. In the experimental program, a total of 14 half-scale squat circular and rectangular reinforced concrete columns were tested under fully reversed cyclic shear in a double bending configuration. In order to provide a basis for comparison, a total of three as-built columns were tested. Another 10 column samples were tested after being retrofitted with different composite jacket systems. One circular as-built column was repaired after failure. The repair process involved both crack injection as well as addition of carbon/epoxy composite jacket. The repaired column was then retested and evaluated. Experimental results showed that all as-built columns developed an unstable behavior and failed in brittle shear mode. The common failure mode for all retrofitted samples was due to flexure with significant improvement in the column ductility. The repaired column demonstrated ductility enhancement over the as-built sample.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
• Authors:
  • Haroun, Medhat A
  • Elsanadedy, Hussein M
• Publication Date: 2005-11

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 741-748
• Serial:
  • Journal of Bridge Engineering
  • Volume: 10
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 1084-0702
  • Serial URL: http://ojps.aip.org/beo

Subject/Index Terms

• TRT Terms: Bridge members; Brittleness; Columns; Composite materials; Cyclic tests; Ductility; Experiments; Flexure; Jacketing (Strengthening); Reinforced concrete bridges; Repairing; Repeated loads; Retrofitting; Scale models; Shear properties
• Uncontrolled Terms: Structural behavior
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Materials; I24: Design of Bridges and Retaining Walls; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 01010551
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 28 2005 9:10AM