THE EFFECT OF BAR ORIENTATION ON THE BEHAVIOR OF COLUMN SPLICES. INTERIM REPORT

Column splices can either be oriented in a side-by-side configuration or in an offset configuration. The purpose of this study is to examine experimentally the behavior of both splice orientations, and to present recommendations for their usage. Four column specimens were tested and evaluated. Each had a 36 in. x 18 in. (914.4 mm x 457.2 mm) cross-section, and the columns were 13 ft (3.96 m) tall, with both side-by-side and offset splices. In total, eight tests were performed considering the effects of the following variables: splice orientation, spacing between splices, and transverse reinforcement. Splice evaluations were based on bar stresses at failure, crack patterns, and modes of failure. Test results showed that offset splices consistently had higher bond strengths than side-by-side splices. If a splice is designed assuming an offset orientation, but constructed as a side-by-side splice, the bond strength may not be sufficient to develop the yield stress of the bars.

  • Supplemental Notes:
    • Research study title: Anchorage and Development of Groups of Reinforcing Bars.
  • 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 Transfer Office, P.O. Box 5051
    Austin, TX  United States  78763-5051

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Schmitz, J S
    • Jirsa, James O
  • Publication Date: 1995-11

Language

  • English

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 87 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00724953
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TXDOT-96/1363-1, Res Rept 1363-1, CTR 0-1363-1
  • Contract Numbers: Study 0-1363
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Aug 26 1996 12:00AM