Performance of Skewed Reinforcing in Inverted-T Bridge Caps

Reinforced concrete inverted-T bridge caps are used extensively in Texas bridges. Many of these bridge structures must be skewed, some in excess of 45 degrees. Faster and easier construction could be obtained if skewed transverse reinforcing steel is utilized. Accordingly, there is a concern about whether using skewed transverse reinforcement will provide reasonable structural behavior for the skewed inverted-T bridge cap in terms of overall cracking occurrence and structural performance. The guidance in current American Association of State Highway and Transportation Officials (AASHTO) code and research of skewed inverted-T bridge caps are limited to only the design of typical normal skewed transverse reinforcement. Therefore, it is necessary to analyze the structural performance of the skewed inverted-T bridge caps with skewed transverse reinforcement and compare the performance to typical normal transverse reinforcement. This research project shall conduct the experimental and analytical investigation on the behavior of the skewed inverted-T bridge caps utilizing skewed transverse reinforcement emphasizing the following three aspects: (a) skewed angle, (b) detailing of transverse reinforcement, and (c) amount of transverse reinforcement. Design provisions of existing design codes, especially AASHTO load and resistance factor design (LRFD) code, shall be reevaluated through the experimental approach. Finally, a rational design method shall be established for the skewed inverted-T bridge caps with skewed transverse reinforcement.

Language

  • English

Project

  • Status: Active
  • Funding: $623595
  • Contract Numbers:

    0-6905

  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Glancy, Chris

  • Performing Organizations:

    University of Houston, Texas

    Houston, TX  United States 
  • Principal Investigators:

    Mo, Yi-Lung

  • Start Date: 20160101
  • Expected Completion Date: 20190228
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01618972
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6905
  • Files: RiP, STATEDOT
  • Created Date: Dec 20 2016 3:25PM