Anchorage of Headed Reinforcement in CCT Nodes

The behavior of headed reinforcement in concrete was studied using full-scale tests of compression-compression-tension (CCT) nodes. The mechanics of the anchorage behavior were observed and recorded to evaluate the manner in which the capacity of a headed bar is developed. The measured data were used to evaluate existing models of headed reinforcement anchorage as well as the ultimate limit state for anchored bars in CCT nodes. Observations from the CCT node tests provided information on the stages of truss development in a simple strut-and-tie model as well as the stress state of the concrete in the node and adjacent struts. Observations of headed bar anchorage have shown that the final anchorage capacity consists of peak head bearing and reduced bond. A model for anchorage capacity was produced based on this concept.

• Supplemental Notes:
  • Report Date: May 2002; Revised: June 2003.
• Corporate Authors:

  University of Texas, Austin

  Center for Transportation Research, 3208 Red River Street
  Austin, TX  United States  78705

  Texas Department of Transportation

  Research and Technology Implementation Office, P.O. Box 5080
  Austin, TX  United States  78763-5080

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Thompson, M K
  • Younger, M J
  • Jirsa, James O
  • Breen, J E
  • Klingner, R E
• Publication Date: 2003-6

Language

• English

Media Info

• Media Type: Print
• Features: Appendices; Figures; References; Tables;
• Pagination: 160p

Subject/Index Terms

• TRT Terms: Anchorages; Reinforced concrete; Reinforcing bars; Strut and tie method; Trusses
• Uncontrolled Terms: Anchorage capacity; Headed reinforcement
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01000952
• Record Type: Publication
• Report/Paper Numbers: FHWA/TX-04/1855-2, Research Report 1855-2
• Contract Numbers: Research Project 0-1855
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jun 16 2005 4:49PM