Structural Behavior of Tall Haunches in TxDOT Beam and Girder Bridges

Deck haunches are commonly used on both prestressed concrete and structural steel girder bridges. The haunch is the area between the top of a bridge girder and the bottom of the concrete deck. Haunch geometry can be influenced by a variety of factors. A primary function of the haunch is to maintain a uniform deck thickness. Haunches are often needed to account for camber and cross-slope. Due to unusual geometric situations or design errors, beam and girder bridges sometimes require tall haunches, which calls into question the overall constructability and horizontal shear transfer between the girders and the deck. To date, no testing has been conducted to ensure the effectiveness of current TxDOT detailing practices. In this project, researchers will develop guidelines for analyzing and designing haunches having different heights and reinforcement detailing. The research will include full-scale laboratory testing of a wide range of haunch details for both prestressed concrete and structural steel girder bridges. Detailed computational models will also be developed. A parametric study will represent the range of dimensions encountered for the vast majority of Texas bridges. Haunch analysis, design, and detailing guidelines will be provided at the conclusion of this project.

Language

  • English

Project

  • Status: Active
  • Funding: $27439
  • Contract Numbers:

    0-7016

  • Sponsor Organizations:

    Texas Department of Transportation

    11th and Brazos Streets
    Austin, TX  United States  78701

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Managing Organizations:

    Texas Department of Transportation

    11th and Brazos Streets
    Austin, TX  United States  78701
  • Project Managers:

    Glancy, Chris

  • Performing Organizations:

    Center for Transportation Research

    3925 W. Braker Lane
    Austin, TX  United States  78759
  • Principal Investigators:

    Williamson, Eric

  • Start Date: 20190710
  • Expected Completion Date: 20221031
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01714836
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-7016
  • Files: RiP, STATEDOT
  • Created Date: Jul 30 2019 3:33PM