Research Study to Inform Strut-and-Tie Design and Guidance

Details

• Creators:
  Tuchscherer, Robin G. ; Dymond, Benjamin Z.
• Corporate Creators:
  Northern Arizona University. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Arizona. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Strut and tie method
  • Calculation
  • Guidelines
  • Serviceability
  • Posttensioning
  • Box girders
  • Construction joints
  • workflow
  • hammerhead
  • straddle bent
  More +
• Publication/ Report Number:
  SPR-782
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Arizona
• Edition:
  Final Report
• Corporate Publisher:
  Arizona. Department of Transportation. Research Center
• Abstract:
  The goal of the project summarized in this report was to research and develop criteria for updating and improving the ADOT Bridge Design Guidelines with respect to the strut-and-tie methodology defined in the AASHTO LRFD Bridge Design Specifications. To accomplish this goal, the existing literature was reviewed and bridge engineers in Arizona and at U.S. State Departments of Transportation were surveyed to establish how they use the strut-and-tie method in practice. These practices were compared with ADOT practices, and new design scenarios were identified for guidance development. These scenarios were comprehensively analyzed, and five in-depth design examples were developed, including examples related to a hammerhead bent cap, post-tensioned straddle bent cap, post-tensioned box girder end diaphragm, long pier cap, and construction joint. The example problems illustrate workflow, provide detailed calculations, and offer guidance for common points of confusion. Dissemination of the design examples and recommended guidance to the bridge engineering design community occurred via a classroom-style workshop.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/87784/dot_87784_DS1.pdf
• File Type:
  [PDF - 2.31 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:343268a1ff282fb02c335257257bec2cbe75c826c4d6d18c1201fc87248f69ca0fd1510b6280e2b3e9d5934f6562ac3455a64b85c64d8ba047aa4ee35449c63b