RES2022-02: Load Rating of Girder-Stringer-Floor Beam Bridges

This research will conduct a literature review of the current state-of-practice and emerging research; experimentally measure strain at various locations; conduct line girder analysis of continuous stringer spans using SIMON software and identifying potential sources of refined load ratings. Standard factors in modern software are overly conservative for these types of bridges; Appendix 6 of AASHTO Specifications is appropriate for stringers and results in significantly increased flexural resistance; The controlling K-factor for the load-tested bridge was found to be 1.68.

• Record URL:
  https://www.tn.gov/content/dam/tn/tdot/long-range-planning/research/final-reports/2023-final-reports-and-summaries/RES2023-25%20Final%20Report.012524.pdf

Language

• English

Project

• Status: Completed
• Sponsor Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Managing Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Project Managers:

  Hayworth, Rebecca

• Performing Organizations:

  Tennessee Tech University

  Department of Civil and Environmental Engineering
  1020 Stadium Drive Box.5015
  Cookeville, TN  United States  38505
• Principal Investigators:

  Henderson, Craig

• Start Date: 20220301
• Expected Completion Date: 20230331
• Actual Completion Date: 20230331

Subject/Index Terms

• TRT Terms: Girder bridges; Load factor
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 01891969
• Record Type: Research project
• Source Agency: Tennessee Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Aug 30 2023 10:56AM