DEFORMATION OF CONTINUOUS PRESTRESSED CONCRETE BEAMS AND ITS EFFECT ON THE ULTIMATE LOAD

TWENTY TESTS OF CONTINUOUS PRESTRESSED BEAMS OF TWO AND THREE SPANS WERE MADE TO INVESTIGATE THE DISTRIBUTION OF CURVATURE OVER THE LENGTH OF EACH BEAM IN RELATION TO THE DISTRIBUTION OF THE MOMENT AND ULTIMATE LOAD. THE INTEGRATED CURVATURE MEASUREMENTS WERE USED TO STUDY THE ACCURACY OF THE THREE METHODS OF ANALYSIS PROPOSED IN THE INSTITUTIONS REPORT ON THE ULTIMATE LOAD DESIGN OF CONCRETE STRUCTURES. IT WAS FOUND THAT MOST OF THE HYPERELASTIC CURVATURE AT HIGH LOADS OCCURRED OVER SHORT LENGTHS AND A SIMPLE AND REASONABLY ACCURATE CALCULATION OF THE ULTIMATE LOAD COULD BE MADE BY CONSIDERING THE DEFORMATION TO BE REPRESENTED BY THE ROTATION OF HINGES FORMED IN THE BEAM, THE MOMENTS BEING RELATED TO THE COMPATIBLE ROTATION ANGLES AT THESE HINGES. /RRL/A/

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Filing Info

  • Accession Number: 00208594
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Jan 8 1994 12:00AM