THE INVESTIGATION OF PRYING ACTION IN DOUBLE ANGLE CONNECTIONS

THE EFFECT OF PRYING ACTION ON THE ULTIMATE LOAD CARRYING CAPACITY OF CONNECTIONS IN DIRECT TENSION IS DETERMINED THROUGH STUDY OF THE BEHAVIOR OF ASTM A325 HIGH STRENGTH BOLTS LOADED IN DIRECT TENSION IN DOUBLE ANGLE CONNECTIONS. FINDINGS ARE COMPARED WITH THOSE OBTAINED FOR STRUCTURAL TEE-CONNECTIONS LOADED IN TTHE SAME MANNER. IT IS FOUND THAT (1) THE MAGNITUDE OF THE PRYING FORCE IS OFTEN GREATER THAN THE APPLIED LOAD, ESPECIALLY FOR THIN ANGLES; AND (2) THE USE OF A FILLER PLATE ON SYMMETRICAL ANGLE CONNECTIONS INCREASES THE ULTIMATE LOAD SUBSTANTIALLY AND STIFFENS THE JOINT, BUT HAS LITTLE EFFECT ON THE TOTAL PLATE SEPARATION. PREVIOUS INVESTIGATIONS AND EXISTING PRYING ACTION FORMULAS ARE DISCUSSED AND FOUND INADEQUATE, AND MORE RESEARCH IS CALLED FOR.

  • Supplemental Notes:
    • Tech Rept NO 70, 39 PP, 16 FIG, 7 TAB, 9 REF
  • Corporate Authors:

    New Mexico State University, Las Cruces

    Department of Civil Engineering, P.O. Box 30001
    Las Cruces, NM  United States  88003-8001
  • Authors:
    • Straina, L A
    • Pollaro, J M
  • Publication Date: 1971-2

Subject/Index Terms

Filing Info

  • Accession Number: 00209402
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 10 1971 12:00AM