A METHOD FOR DETERMINING THE TENSILE STRESSES IN THE END ZONES OF PRE-TENSIONED BEAMS

THE PAPER PRESENTS A METHOD FOR THE DETERMINATION OF THE VERTICAL TENSILE STRESSES WHICH OCCUR AT THE ENDS OF PRE-TENSIONED PRESTRESSED CONCRETE BEAMS AT THE TIME OF TRANSFER OF PRESTRESS TO THE CONCRETE. THESE STRESSES ARE KNOWN TO BE RESPONSIBLE FOR THE HORIZONTAL END ZONE CRACKING OFTEN OBSERVED IN FIELD SURVEY AS WELL AS IN MANUFACTURING PLANTS. THE METHOD WHICH IS DESCRIBED HERE IS BASED ON THE EXPERIMENTAL RESULTS OF OVER SIXTY TESTS. THE MAXIMUM TENSILE STRESSES ARE FOUND TO OCCUR ON THE CENTROIDAL AXIS AT THE END FACE, THE LOCATION WHERE HORIZONTAL CRACKING HAS BEEN NOTED IN THE FIELD AND PLANTS. THE PAPER SUGGESTS A METHOD FOR PREDICTING CRACKING, AND THE OBSERVED CRACKING LOADS ARE COMPARED WITH THOSE OBTAINED BY THIS METHOD FOR THE CRACKED BEAMS. /TRRL/

  • Availability:
  • Supplemental Notes:
    • VOL 45 NO 7 PP 286-97, 315
  • Authors:
    • Krishnamurthy, D
  • Publication Date: 1971-7

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00208791
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Jun 28 1972 12:00AM