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.
- Research study title: Anchorage and Development of Groups of Reinforcing Bars.
University of Texas, AustinCenter for Transportation Research, 3208 Red River Street
Austin, TX United States 78705
Austin, TX United States 78763-5051
Washington, DC United States 20590
- Schmitz, J S
- Jirsa, James O
- Publication Date: 1995-11
- Features: Figures; Photos; References; Tables;
- Pagination: 87 p.
- TRT Terms: Bond strength (Materials); Bonding; Columns; Failure; Laboratory tests; Reinforcing bars; Shape; Spacing; Splicing; Transverse reinforcement; Yield stress
- Uncontrolled Terms: Configurations
- Old TRIS Terms: Failure mode; Splices; Test results
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
- 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