SUDDEN COLLAPSE OF UNBONDED UNDERPRESTRESSED STRUCTURES

THE BEHAVIOR OF UNBONDED PRESTRESSED BEAMS AND SLABS AT FLEXURAL CRACKING, WHICH IS OFTEN ACCOMPANIED BY A SUDDEN DECREASE OF THE LOAD CAPACITY IS DISCUSSED. THIS INSTABILITY PHENOMENON IS OF CONSIDERABLE IMPORTANCE BECAUSE IT CAN CAUSE A SUDDEN COLLAPSE OF UNBONDED PRE- STRESSED STRUCTURES WHEN THEY ARE SUBJECTED TO EXCESSIVE LOADS OR EARTHQUAKE LOADS. A THEORETICAL EXPLANATION OF THE FOREGOING PROBLEM IS GIVEN, AND IT IS CONCLUDED THAT SUDDEN COLLAPSE CAN BE AVOIDED BY MAKING THE AVERAGE CONCRETE PRESTRESS GREATER THAN THE MODULUS OF RUPTURE. EXPERIMENTAL VERIFICATIONS OF THE FOREGOING PROPOSITION ARE PRESENTED. TWO WORKED EXAMPLES ARE INCLUDED TO ILLUSTRATE THE PROPOSED METHOD. /AUTHOR/

  • Supplemental Notes:
    • Vol66, No 2, PP 129-135, 8 FIG, 1 TAB, 1 REF, 1 APP
  • Authors:
    • Woods, J F
  • Publication Date: 1969-2

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  • Accession Number: 00208961
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 4 1994 12:00AM