LOAD TESTS ON LONG BEARING PILES

LOAD TESTS WERE PERFORMED ON CORRUGATED STEP-TAPERED PILES WITH PIPE EXTENSIONS AND PIPE PILES DRIVEN THROUGH 120 FT. OF SLIGHTLY OVERCONSOLIDATED, MEDIUM-TO-STIFF, FISSURED CLAYS 1 TO 10 FT. INTO DENSE FINE SANDS AND SILTY SANDS. THE FOLLOWING CONCLUSIONS ARE INDICATED BY THE TEST DATA AND WAVE EQUATION ANALYSES OF THE DRIVEN PILES: (1) THE CORRUGATED STEP-TAPERED PILES DEVELOPED FRICTIONAL RESISTANCES IN THE CLAYS EQUAL TO OR GREATER THAN THE MINIMUM UNDRAINED SHEAR STRENGTH DETERMINED BY UNCONFINED COMPRESSION TESTS, (2) PIPE PILING FRICTIONAL RESISTANCES WERE ABOUT TWO THIRDS OF THE CORRUGATED PILE VALUES, AND (3) THE BEARING CAPACITY OF THE SAND WAS OVERESTIMATED 70 TO 100 PERCENT BY WAVE EQUATION ANALYSES OF THE ULTIMATE RESISTANCE OF BEARING PILES DRIVEN TO PRACTICAL REFUSAL AND 150 TO 400 PERCENT BY BEARING CAPACITY FORMULAE USING FULL OVERBURDEN PRESSURES AND BEARING CAPACITY FACTORS FOR LABORATORY- MEASURED ANGLE OF INTERNAL FRICTION OF THE SAND. /AUTHOR/

  • Supplemental Notes:
    • Stp 444, pp 41-67
  • Corporate Authors:

    American Society for Testing and Materials

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  USA  19428-2957
  • Authors:
    • Darragh, R D
    • Bell, R A
  • Publication Date: 1969

Subject/Index Terms

Filing Info

  • Accession Number: 00215193
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 2 1994 12:00AM