Extending Hyrisk to Predict Scour Risk as a Function of Soil Erodibility Characteristics

Details

• Creators:
  Garrow, Laurie A. ; Sturm, Terry W. ; Bones, Emma
• Corporate Creators:
  Georgia Institute of Technology
• Corporate Contributors:
  Georgia. Dept. of Transportation. Office of Research ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Scour
  • Bridges
  • Risk assessment
  • Erosion control
  • Unstable soil
  • Bridge design
  • Risk assessment
  • Soil erodibility
  • Critical shear stress
  • Erosion
  More +
• Publication/ Report Number:
  FHWA-GA-RPXX
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Georgia
• TRIS Online Accession Number:
  01592078
• Edition:
  Final Report
• Corporate Publisher:
  Georgia. Dept. of Transportation
• Abstract:
  The majority of bridge failures in the U.S. are the result of bridge foundation scour. However, determining which bridges are most vulnerable to scour is challenging – particularly in Georgia where more than 5,000 bridges have unknown foundations. This project develops an approach that associates the critical shear stress of a soil to its USCS soil group classification. This approach is applied to approximately 40 bridges in Georgia using HYRISK, a scour risk assessment tool, and shows how incorporating soil property information changes the expected financial losses associated with a bridge failure. This is important, as it enables engineers to use soil property information that is commonly found on boring logs to direct limited maintenance funds to those bridges that are most at risk to scour failure.
• Format:
  PDF
• Funding:
  GDOT 14-35
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/39549/dot_39549_DS1.pdf
• File Type:
  [PDF - 956.61 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:fc199c8a6f32e354e8dacb9e71f9d6ddd5d41d2e663a89d0cccc9d7e1aa4da0a