RELAXATION OF PILES IN SAND AND INORGANIC SILT

MANY ATTEMPTS HAVE BEEN MADE TO MODIFY THE PILE DRIVING FORMULAS TO MAKE THEM REALISTIC IN TERMS OF MODERN DRIVING PRACTICES AND EQUIPMENT. NONE SEEMS TO HAVE HAD A LONG LASTING IMPACT ON THE ENGINEERING PROFESSION. THE DRIVING IMPULSE OF A PILE IS ALWAYS ASSOCIATED WITH A TEMPORARY REMOLDING OF SURROUNDING SOIL, A ZONE OF EXCESSIVE PORE WATER PRESSURE AND THE DILATANCE OF DENSE FINE SAND. FOR PILES SUBJECTED TO LOADING TEST OR UNDER THE LOAD OF A STRUCTURE, THERE IS NO DISPLACEMENT IN THE SOIL; THEREFORE, NO REMOLDING, NO DILATANCE AND NO EXCESSIVE PORE WATER PRESSURE ARISE AROUND THE PILE. A REVIEW HAS BEEN MADE OF THE BASIC MECHANICS RELATING TO RELAXATION OF PILE RESISTANCE IN DENSE FINE SAND OR INORGANIC SILT AS WELL AS THE FREEZE OF PILES IN SOFT CLAY OR ORGANIC SILT. THE PILE RESISTANCE AT THE BEGINNING OF REDRIVING CAN BE USED MORE EFFECTIVELY IN REPRESENTING THE STATIC CAPACITY OF A PILE THAN THAT ENCOUNTERED IN INITIAL DRIVING. /ASCE/

  • Supplemental Notes:
    • Vol 96, No SM2, PROC PAPER 7123, PP 395-409, 9 FIG, 3 TAB,
  • Authors:
    • Yang, N C
  • Publication Date: 1970-3

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Filing Info

  • Accession Number: 00235992
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 1 1971 12:00AM