PENETRATION RESISTANCE OF SOILS. REPORT 3, TESTS WITH CIRCULAR FOOTINGS IN COHESIVE SOILS

THE OBJECTIVE IS TO ESTABLISH SCALING RELATIONS OF FORECES AND DISPLACEMENTS FOR FAMILIES OF CIRCULAR FOOTINGS (PLATES AND CYLINDERS). THE REPORT CONTAINS THE BASIC DATA AND AN ANALYSIS OF THE PENETATION RESULTS OBTAINED FROM TESTS WITH CIRCULAR PLATES AND SMOOTH-WALLED AND ROUGH-WALLED CYLINDERS IN A FAT CLAY PREPARED AT TWO STRENGTH LEVELS. THE FOOTINGS RANGED FROM 2.5 TO 61 CM IN DIAMETER. IN GENERAL, IT WAS FOUND THAT A DIMENSIONLESS EQUATION OF THE FORM P/C = F(Z/D), WHERE P IS PRESSURE, C IS SOIL COHESION, Z IS DEPTH OF PENETRATION, AND D IS DIAMETER OF THE FOOTING, APPEARS TO BE ADEQUATE FOR SCALING FORCES AND DISPLACEMENTS. HOWEVER, THE DATA SUGGEST THAT, IN WEAK SOILS, THERE MAY BE A MINIMUM FOOTING DIAMETER BELOW WHICH THE SCALING LAW DOES NOT APPLY. A SINGLE DIMENSIONLESS PLOT OF THE DATA OBTAINED FOR THE SEVERAL SIZES OF FOOTINGS IS NOT SUPPORTED BY EXISTING BEARING CAPACITY EQUATIONS. THE MEASURED CURVES OF PENETRATION ARE IN BETTER AGREEMENT WITH THOSE COMPUTED BY THE MEYERHOF EQUATION THAN WITH THOSE COMPUTED FROM BRINCH HANSEN'S EQUATION. /AUTHOR/

  • Supplemental Notes:
    • Tech Rpt M-70-14, 26PP, 21FIG, 2 TAB, 16REF
  • Corporate Authors:

    U.S. Army Waterways Experiment Station

    3909 Halls Ferry Road
    Vicksburg, MS  United States  39180-6199
  • Authors:
    • Green, A J
  • Publication Date: 1971-7

Subject/Index Terms

Filing Info

  • Accession Number: 00236071
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 19 1971 12:00AM