Effects of realistic heat straightening repair on the properties and serviceability of damaged steel beam bridges.

Details

• Creators:
  Varma, Amit H. ; Sohn, Youngmoo
• Corporate Creators:
  Joint Transportation Research Program (Ind.)
• Corporate Contributors:
  United States. Federal Highway Administration ; Indiana. Dept. of Transportation
• Subject/TRT Terms:
  • Steel bridges
  • Deformation
  • Repairing
  • Straightening
  • Guidelines
  • Serviceability
  • Beams
• Publication/ Report Number:
  FHWA/IN/JTRP-2013/03
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Purdue University. Joint Transportation Research Program
• Abstract:
  The permanent deformations in steel beam bridges caused by collision with high profile vehicles can be repaired by heat straightening, ; which is a structurally efficient and cost‐effective repair process developed by many engineers over the years. Guidelines for conducting ; heat straightening repair have been developed by FHWA and many DOTS. The guidelines establish limits for: (a) the maximum damage ; that can be repaired, (b) the maximum restraining force, and (c) the maximum heating temperature to prevent the side effects of heat ; straightening repair process. However the heat straightening guidelines are violated in the field due to time and economic issues. These ; violations include, but are not limited to: (a) under heating below 1200°F, (b) overheating above 1200°F, (c) overstraining above ; restraining force limit (0.5 Mp) and (d) multiple heat straightening of the same beam more than two times. ; Currently, there is a lack of knowledge of the effects of these imperfections in the heat straightening repair process on the condition and ; serviceability of the damaged‐repaired beams. This knowledge is needed to develop more realistic guidelines for evaluating and ; replacing bridge members subjected to damage followed by imperfect heat straightening repair. The overall goal of this research is to ; develop recommendations and guidelines for evaluating steel beam bridges in Indiana subjected to damage followed by heat ; straightening repair with imperfections (overstraining, overheating, or multiple heat straightening).
  More +
• Format:
  PDF
• Funding:
  SPR-3105
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26571/dot_26571_DS1.pdf
• File Type:
  [PDF - 48.82 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:98e79d996f32bbfffee68f16bdf43b19b371170a6df5eebd88ce6db12d83fbb3