INFLUENCE OF COLUMN RECTANGULARITY ON THE BEHAVIOR OF FLAT PLATE STRUCTURES

TESTS WERE CARRIED OUT ON NINE CONCENTRICALLY LOADED REINFORCED CONCRETE SLABS SUPPORTED ON CENTRALLY LOCATED RECTANGULAR COLUMNS. THE LENGTHS OF THE ADJACENT FACES OF THE COLUMN HAD RATIOS RANGING BETWEEN 1 AND 4.3 AND VARIATIONS WERE MADE IN THE LOADING AND REINFORCEMENT PATTERNS. THE SHEAR CAPACITIES WERE CONSISTENT WITH THOSE CALCULATED FROM THE 1971 ACI BUILDING CODE FOR SPECIMENS WITH LONG-TO-SHORT SIDE RATIOS FOR THE COLUMN LESS THAN 2.0. FOR LARGER RATIOS, THE SHEAR CAPACITIES WERE LESS THAN THE CODE VALUES. THE DEFLECTIONS AT SERVICE LOADS WERE CONSIDERABLY LARGER THAN THOSE CALCULATED FROM ELASTIC THEORY ASSUMING FULL FIXITY AT THE COLUMN FACE AND A CONCRETE SECTION FULLY CRACKED IN TENSION. A PROCEDURE IS PROPOSED FOR TAKING ACCOUNT OF THE COLUMN SHAPE IN CALCULATIONS OF THE SHEARING CAPACITY OF THE SLAB. /ACI/

  • Authors:
    • Hawkins, N M
    • Fallsen, H B
    • Hinojosa, R C
  • Publication Date: 1972-1

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Filing Info

  • Accession Number: 00209669
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 9 1972 12:00AM