POINT RESISTANCE OF A MODEL PILE DRIVEN IN SAND

THE PROBLEM OF PREDETERMINING THE BEARING CAPACITY OF PILES REMAINS UNSOLVED DUE TO THE FAILRE OF EXISTING THEORY TO COMPLETELY EXPLAIN LOAD TRANSFER FROM PILE TO SOIL. THIS PAPER IS BASED ON A PREVIOUS PAPER THAT ISOLATED AND MEASURED N(M), A COEFFICIENT OF NEGATIVE FRICTION. IN THE PRESENT PAPER, THE DISTRIBUTION OF THE TOTAL LOAD IN THE TWO COMPONENTS, POINT RESISTANCE AND MANTLE RESISTANCE, IS ANALYZED. WITH INCREASING COMPACTION, THE PILE POINT WAS FOUND TO TAKE ON A LARGER PERCENTAGE OF THE LOAD. WITH INCREASING PENETRATION DEPTH THE RATIO OF PILE POINT TO TOTAL RESISTANCE REDUCES, BUT TENDS TO STAY CONSTANT BEYOND A CERTAIN DEPTH. TYPICALLY, THE PILE POINT TOOK ON 65% OF THE LOAD. THE BEARING CAPACITY OF THE PILE POINT HAS SHOWN A STRONG DEPENDENCE ON THE COMPACTION OF THE SAND. UNLIKE THE SKIN FRICTION COEFFICIENT, THE PILE POINT FACTOR SHOWED INDEPENDENCE OF DRIVING DEPTH, AT LEAST AFTER A SCALE EFFECT OR APPARENT COHESION HAS BEEN INTRODUCED INTO THE ANALYSIS.

  • Supplemental Notes:
    • Bull No 29, PP 27-35, 11 FIG, 5 TAB, 19 REF
  • Corporate Authors:

    Danish Geotechnical Institute

    1 Maglebjergvej
    DK-2800 Lyngby,   Denmark 
  • Authors:
    • Tejchman, A
  • Publication Date: 1971

Subject/Index Terms

Filing Info

  • Accession Number: 00233253
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 17 1972 12:00AM