Thermal behavior of IDOT integral abutment bridges and proposed design modifications.

Details

• Creators:
  Olson, Scott M. ; Holloway, Kurt P. ; Buenker, Jason M. ; Long, James H. ; LaFave, James M.
• Corporate Creators:
  University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration ; Illinois. Dept. of Transportation
• Subject/TRT Terms:
  • Bridge abutments
  • Bridge design
  • Parametric analysis
  • Field studies
  • Jointless bridges
  • Skewed structures
  • Pile foundations
  • Thermal stresses
  • Structural analysis
• Publication/ Report Number:
  FHWA-ICT-12-022
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  The Illinois Department of Transportation (IDOT) has increasingly constructed integral abutment bridges (IABs) ; over the past few decades, similar to those in many other states. Because the length and skew limitations ; currently employed by IDOT have not necessarily been based on rigorous engineering analyses, an extensive 3- ; D parametric study has been performed, complemented by installation of field monitoring equipment on two ; recently constructed bridges, to potentially expand the use of IABs in Illinois. Some notable findings from this ; study include: (1) IAB configuration with extreme skew (> 60°) can perform well with proper detailing; (2) H-pile ; webs oriented parallel to the longitudinal axis of the bridge, regardless of skew, substantially reduces weak-axis ; bending; (3) compacted backfill reduces pile stresses; (4) live loads affect thermally induced pile stresses; (5) ; longer intermediate spans tend to increase pile stresses; and (6) time-dependent behaviors, such as concrete ; shrinkage, may significantly influence maximum pile stresses. Based on these findings, a more rigorously ; developed set of recommendations for maximum IAB lengths and skews in Illinois are proposed.
  More +
• Format:
  PDF
• Funding:
  R27-55
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/22332/dot_22332_DS1.pdf
• File Type:
  [PDF - 2.05 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:39119075a6442b26203ca953f0bb415d3deb06ba720c3022b02bd056b1947878c086b2228178493c07da5e2420c2becc0d0bf79ccc1bf3445cf4a4c9b5012642