LATERAL LOAD TESTS ON DRILLED PIERS

LATERAL LOAD TESTS WERE PERFORMED ON FOUR 4-FT DIAMETER DRILLED PIERS EXTENDING THROUGH WATER BEARING GRANULAR OVERBURDEN AND TERMINATING IN SHALE BEDROCK. DEPTH OF OVERBURDEN VARIED FROM 10 TO 43 FT. THE TESTS INVOLVED PIERS WITH BOTH BELL AND SOCKET BASES. ELECTRIC RESISTANCE STRAINS AT THE REINFORCING STEEL, AND FURNISHED DATA FROM WHICH BENDING MOMENTS WERE DETERMINED. IT WAS CONCLUDED THAT: (1) DRILLED PIERS ARE CAPABLE OF RESISTING LATERAL LOADS OF LARGE MAGNITUDE, (2) SOIL EMBEDMENT IS VERY EFFECTIVE IN ATTENUATING MOMENTS CAUSED BY LATERAL LOADS, (3) BELL AND SOCKET BASES EFFECTIVELY RESIST LATERAL LOADS FOR SHORT DRILLED PIERS TERMINATING IN ROCK, (4) LATERAL LOAD RESISTANCE OF LONG DRILLED PIERS IS NOT INFLUENCED BY THE BASE CONDITIONS, AND (5) CYLIC LOADING CAUSES DEFLECTIONS TO DOUBLE AND MOMENTS TO INCREASE 20 TO 50 PERCENT, APPROXIMATELY COMPARED TO THE VALUES FOR THE FIRST CYCLE OF LOAD. /ASTM/

  • Supplemental Notes:
    • Stp 444, pp 68-83, 9 FIG
  • Corporate Authors:

    American Society for Testing and Materials

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  United States  19428-2957
  • Authors:
    • Davisson, M T
    • Salley, J R
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00232689
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 15 2004 2:30AM