New Repair Strategies for Life-Cycle Extension of Corroded Steel Girder Bridges [Summary]

Details

• Creators:
  Varma, Amit H. ; Connor, Robert J.
• Corporate Creators:
  Purdue University. Joint Transportation Research Program
• Corporate Contributors:
  Indiana Department of Transportation
• Subject/TRT Terms:
  Bridge Management Systems Carbon Steel Corrosion Resistant Steel Cost Effectiveness Girder Bridges Life Cycle Analysis Service Life Steel Bridges
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  Purdue University. Joint Transportation Research Program
• Abstract:
  Steel girder ends are susceptible to corrosion damage due to deicing salts, water, and other contaminants leaking from failed expansion joints. When corrosion becomes significant, it leads to a reduction in the sectional properties of steel girders and consequently reduces bearing and shear resistance. Conventional repair methods, although effective, require substantial time and resources to complete, causing public inconvenience from necessary traffic closures. Therefore, there is a need for practical, rapid, and robust repair methods suitable for implementation by local Department of Transportation (DOT) maintenance personnel. In this study, five innovative repair methods were systematically evaluated through a selection process called the House of Quality Matrix. After completing the comprehensive evaluation and additional numerical simulations, the "sandwich panel" repair method was selected for further investigation. The "sandwich panel" repair method encased the corroded region with a filler material reinforced by threaded rods. Two thin steel plates installed on both girder sides served as stay-in-place formwork. This expedited the installation process and eliminated the labor-intensive steps of jacking, welding, and formwork disassembly, thus making the repair more cost-effective and less time-consuming.
• Format:
  PDF
• Funding:
  SPR-4635
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:714e42eccc53f036d88315042143c22b4b5c86ba337efc229be5df00450fc3fc237076c6e0fa65016a2d12ca0b02f759dcef66391140bd761f5900b7a73b455a
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/80390/dot_80390_DS1.pdf
• File Type:
  [PDF - 824.77 KB ]