Forensic collapse investigation of a concrete bridge with timber piers.

Details

• Creators:
  Borello, Danniel J. ; Andrawes, Bassem ; Hajjar, Jerome F. ; Olson, Scott M. ; Hansen, James ; Buenker, Jason
• Corporate Creators:
  Illinois Center for Transportation
• Corporate Contributors:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research
• Subject/TRT Terms:
  • Bridge piers
  • Prestressed concrete bridges
  • Prestressed concrete
  • Precast concrete
  • Pile caps
  • Beams
  • Collapse
  • Failure Precast concrete
  • Bridge failures
• Publication/ Report Number:
  FHWA-ICT-09-042;ICT-09-042, UILU-ENG-2009-2013
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Edition:
  Final report
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  This report outlines the forensic investigation of the collapse of Bridge No. SN 019-5010 in DeKalb County, ; Illinois on August 19, 2008. The bridge consisted of three 42 feet precast prestressed concrete deck beams ; simply-supported by concrete pile caps with a timber pile foundation. Assessment based on site investigation, in ; situ readings, and analysis indicated that a geotechnical or superstructure failure may be ruled out. Samples of ; the oak timber piles were retrieved and tested under pure compression as well as combined compression and ; flexure. Laboratory testing results of these specimens were used to calibrate an analytical model of a full-scale ; single timber pile. The analytical model considered both symmetrical and unsymmetrical loading of the bridge. ; The results of the analytical model were used to determine the required live load to initiate collapse. The results ; of the investigation indicate that structural overload, leading to fracturing of the timber piles in combined ; compression and flexure, is the likely reason for the bridge failure.
• Format:
  PDF
• Funding:
  ICT-R27-SP12
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16718/dot_16718_DS1.pdf
• File Type:
  [PDF - 5.43 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:10148568e9f8f99185eb0692a11028fcfacbdbeabc5a08a6591ac8667a59a397d7357fff6a9587963d6f538ae59da7e56f8e18c62e2d804f5f8edff546876347