SHEAR STRENGTH OF BENT CAPS BETWEEN COLUMNS

SHEAR AND BOND STRESSES PERMISSIBLE IN BENT CAPS INSIDE THE SUPPORTS, BUT CLOSE TO THEM, WERE STUDIED, FOR COMPARISON WITH EARLIER STUDIES ON SHORT OVERHANGING ENDS. BEHAVIOR WAS NOT QUITE THE SAME, BOND SPLITTING TENDING TO LOWER THE SHEAR STRENGTH SLIGHTLY BELOW THE VERY HIGH LIMITS PERMISSIBLE ON THE OVERHANGING ENDS. IT ALSO APPEARS NECESSARY TO CALCULATE BOND STRESSES, BUT THE PERMISSIBLE STRESSES RECOMMENDED BOTH IN SHEAR AND BOND ARE IN EXCESS OF THOSE COMMONLY SPECIFIED. ALTHOUGH THE STRENGTH ADDED BY VERTICAL STIRRUPS AT A/D OF 0.5 WAS NEGLIGIBLE, IT WAS FOUND SAFE AND EFFICIENT TO COMBINE THE RECOMMENDED SHEAR VALUE OF CONCRETE WITH THE FULL SHEAR VALUE OF STIRRUPS AS ORDINARILY COMPUTED. THE STIRRUPS DELAYED SPLITTING IN THOSE LENGTHS WERE SPLITTING TENDED TO LOWER SHEAR STRENGTH. WHERE STIRRUPS WERE LESS EFFECTIVE, THE SHEAR STRENGTH WITHOUT STIRRUPS WAS ALREADY HIGHER. /AUTHOR/

• Supplemental Notes:
  • Hpr-1/5/, NO 3-5-66-91
• Corporate Authors:

  University of Texas, Arlington

  Arlington, TX  United States  76010

  Texas State Department of Highways & Public Transp

  11th and Brazos Streets
  Austin, TX  United States  78701
• Authors:
  • Ferguson, P M
  • Liao, H M
• Publication Date: 1966-9

Subject/Index Terms

• TRT Terms: Alternatives analysis; Bents; Bond strength (Materials); Bonding; Columns; Concrete; Shear strength; Stirrups; Structural supports
• Uncontrolled Terms: Overhang
• Old TRIS Terms: Supports
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00207815
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Feb 15 1994 12:00AM