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SETTLEMENT OF SINGLE PILES. MODERN METHODS IN THE DESIGN OF PILE FOUNDATIONS; POST GRADUATE COURSE, UNIVERSITY OF SYDNEY, MAY 1985

The load deformation response of piles under axial load has been examined extensively, using numerical methods, particularly integral equation or boundary element methods. Such methods enable charts to be developed showing how the settlement of a pile depends on the various parameters of pile geometry and stiffness, and soil stiffness. Poulos and Davis have compiled an extensive collection of such charts, enabling the load settlement response of any given pile to be estimated readily. As an aid to understanding the manner in which a pile transfers load to the soil under working conditions, an approximate solution is developed here for the load settlement response of a pile in elastic soil. The solution leads to an expression for the pile stiffness (that is applied load divided by settlement) in closed form, which may be used as an alternative to charts. In developing this solution, the manner in which load is transferred to the soil from the pile shaft, and from the pile base, will be examined separately, before combining the two to give the response of the complete pile. The soil will be treated, in the first instance, as an elastic material, characterised by an appropriate secant value of elastic modulus, varying in some fashion over the depth of interest. For the covering record of the course see IRRD 283875. (Author/TRRL)

  • Corporate Authors:

    University of Sydney

    School of Civil and Mining Engineering, Parramatta Road
    Sydney, New South Wales 2006,   Australia 
  • Authors:
    • RANDOLPH, M F
  • Publication Date: 1985-5

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Filing Info

  • Accession Number: 00462580
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, TRIS
  • Created Date: Feb 28 1987 12:00AM