Methodology for Load Rating Double-Tee Bridges [Research Brief]

Details

• Creators:
  Tazarv, Mostafa ; Seo, Junwon ; Wehbe, Nadim ; Rimal, Sandip ; Kidd, Brian
• Corporate Creators:
  South Dakota State University. Department of Civil and Environmental Engineering ; Upper Great Plains Transportation Institute
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
• Subject/TRT Terms:
  Condition Surveys Double-tee Bridges Field Tests Girder Bridges Inspection Live Loads Load And Resistance Factor Design Load Factor Methodology Precast Concrete Prestressed Concrete Prestressed Concrete Bridges Shear Capacity Shear Strength Statistical Analysis

  More +
• Publication/ Report Number:
  MPC-19-389
• Resource Type:
  Brief
• Geographical Coverage:
  United States ; South Dakota
• Edition:
  Research Brief
• Corporate Publisher:
  Mountain-Plains Consortium
• Abstract:
  Quantitative definitions were proposed to identify all damage types and condition states specific to South Dakota double-tee bridges. Subsequently more than 370 inspection reports were reviewed to determine the frequency of damage types and condition states, bridge span length, bridge number of spans, girder depth, and bridge skew conditions. The statistical database was then used to identify bridge candidates for field and strength testing. Ten double-tee bridges were identified as suitable for field testing and two bridges were selected for field testing. Girder distribution factors (GDFs) and dynamic load allowance (IM) were measured during the field testing of the two bridges. To verify the available moment and shear capacity estimation methods, two 45-year old double-tee girders, one 50-ft (15.24-m) long and another 30-ft (9.14-m) long were extracted from a bridge located on Nemo Road, SD, and were strength tested at the Lohr Structures Laboratory at South Dakota State University. A four-point loading configuration was selected for the strength testing. The measured data was used to validate the capacity estimation methods. Subsequently, the verified methods were utilized to calculate the shear and moment capacities of all 23 different double-tee sections, which have been used in South Dakota.
• Format:
  PDF
• Funding:
  MPC-523
• Collection(s):
  University Transportation Centers
• Main Document Checksum:
  urn:sha-512:a87b968429e556d3630c2bc176458f5795fbca4db9fcd39eead6a120212a3512b932d6dd599eb8ec398b266ce666ee94355a082aa59dba9373a784732d27f8ab
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/92928/dot_92928_DS1.pdf
• File Type:
  [PDF - 818.30 KB ]