Long term monitoring of carbon composite strands in the Penobscot-Narrows bridge.

Details

• Creators:
  Berube, Keith ; Lopez-Anido, Roberto
• Corporate Creators:
  University of Maine at Orono. Advanced Engineered Wood Composites Center
• Subject/TRT Terms:
  • Cable stayed bridges
  • Structural health monitoring
  • Bridge cables
  • Bridge design
  • Fiber composites
  • Carbon fibers
  • Data collection
  • Data analysis
• Publication/ Report Number:
  ME 15-10
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maine
• Corporate Publisher:
  Maine. Dept. of Transportation
• Abstract:
  The Penobscot-Narrows Bridge was constructed between May 2003 and December 2006. The bridge is a cable-stayed design with twin pylons and a 2,120-foot span. This cable-stayed bridge features a cradle stay system that ; allows for each cable strand in the stay to span between the main-span bridge deck anchorage, through the pylon, ; and then down to the back-span bridge deck anchorage. In each pylon, twenty stays run through individual cradle ; systems with each stay enclosed in a high-density polyethylene (HDPE) sheathing extending from the pylon to the ; bridge deck. ; The unique design features of the cable support and anchorage systems used in the Penobscot-Narrows Bridge not ; only permit the replacement of each cable strand, but also present engineers with the opportunity to test a variety of ; cable designs and materials for their longevity and performance in order to better serve the entire bridge industry. ; The engineers at MaineDOT recognized this, so in June 2007, two steel strands were removed from each stay, at ; stay numbers 2, 10 and 17 of the Prospect side pylon, while concurrently installing two carbon-fiber composite ; cables (CFCC) in their place. ; This report provides data and analysis of the CFCC cables from the installed structural monitoring system and ; makes recommendations for long term monitoring of the cables. ; A previous report documented the CFCC installation, instrumentation and initial data analysis
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29131/dot_29131_DS1.pdf
• File Type:
  [PDF - 6.67 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:d0fce71318125ba0efcefee54f4be19205440e39173a15ede4ed996f1f8bb916