Use of Larger Diameter Shear Studs for Composite Steel Bridges

Efficient steel bridge girder design makes use of composite action between the concrete bridge deck and the steel girders. Shear studs welded to the girder top flange provide the critical link between the deck and girders. Satisfying AASHTO fatigue requirements normally leads to a very large number of shear studs, which makes placing partial-depth precast panels extremely difficult and results in a safety hazard for workers during erection or early construction stages. Using larger-diameter shear studs will significantly reduce the number of studs required on composite steel girders. This project focuses on the feasibility of using shear stud diameters greater than 7/8 inch for composite steel bridge construction, and the development of design guidelines for evaluating the static and fatigue strength of larger diameter shear studs. The research team will perform: (1) laboratory testing using push-out or similar specimens to obtain data to evaluate both the static strength and fatigue strength of larger diameter shear studs. (2) large-scale composite beam tests and associated computational studies to provide an evaluation of the performance of composite steel bridge girders with larger diameter shear studs.

• Record URL:
  https://library.ctr.utexas.edu/Presto/project=0-7042

Language

• English

Project

• Status: Completed
• Funding: $1267153
• Contract Numbers:

  0-7042

• Sponsor Organizations:

  Texas Department of Transportation

  125 E. 11th Street
  Austin, TX  United States  78701-2483

  Federal Highway Administration

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

  Texas Department of Transportation

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

  Adediwura, Jade

• Performing Organizations:

  Center for Transportation Research

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

  Engelhardt, Michael

• Start Date: 20191217
• Expected Completion Date: 20231031
• Actual Completion Date: 20231031
• Source Data: TxDOT Research Library

Subject/Index Terms

• TRT Terms: Bridge construction; Bridge design; Composite structures; Fatigue strength; Steel bridges; Stud connectors
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 01743942
• Record Type: Research project
• Source Agency: Texas Department of Transportation
• Contract Numbers: 0-7042
• Files: RIP, STATEDOT
• Created Date: Jun 24 2020 5:32PM