Bridge-in-a-Backpack(TM). Task 7 : investigation of damage and repairs for concrete filled FRP tubular arches.

Details

• Creators:
  Goslin, Keenan ; Arimond, John
• Corporate Creators:
  University of Maine. Advanced Structures and Composites Center
• Subject/TRT Terms:
  • Arch bridges
  • Concrete bridges
  • Fiber reinforced polymers
  • Flexural strength
  • Bending stress
  • Repairing
• Publication/ Report Number:
  ME 15-05
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maine
• Corporate Publisher:
  Maine. Dept. of Transportation
• Abstract:
  This report includes fulfillment of Task 7 of a multi-task contract to further enhance concrete filled FRP tubes, or ; the Bridge in a Backpack. ; Damage due to impact of the FRP shell of the concrete filled FRP tubular arch bridges has been and still is a concern ; for many engineers and administrators. This technology uses the exterior FRP shell for confinement, protection and ; longitudinal reinforcement of the reinforced concrete arch member. This report was commissioned to look at types ; of potential damage to these members, effects of varying levels of damage on flexural capacity and methods of ; repair to damaged sections. ; The 3-point bending strength of reinforced hybrid concrete beams was reduced by 36-47% by the presence of ; notches with widths between 0.5 and 2.8 inches. Measured percent reduction in bending capacity did not correlate ; well with measured notch size or predicted values using traditional methods of section loss. Reinforced hybrid ; concrete beams, broken and repaired by one particular method with triaxial broadgood, exhibited only 17-18% of ; their original strength. A hybrid concrete arch, tested to failure in 2009 at about 62,300 lb, was repaired by Kenway ; Corporation in March 2014 by generally following the guidance of Duong and Wang (2007). The resulting repair ; patch failed after 1.5 inches displacement at 43,041 lb (69%), after which the arch sustained an additional 6.0 inches ; of displacement until its shoulder ruptured at 60,321 lb.
  More +
• Format:
  PDF
• Funding:
  20111223*2878
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29095/dot_29095_DS1.pdf
• File Type:
  [PDF - 2.59 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:108e65502a2a7c8472f29cf5070e2349760aa84e1a37884b6087700504a9a64f