The paper presents the results of a systematic parametric investigation of the static and dynamic response of single free-head piles embedded in a soil stratum, the modulus of which increases linearly with depth. The study is conducted by means of a dynamic finite-element formulation which accounts for the three-dimensionality of soil deformation while properly reproducing the radiation damping characteristics of the system. The soil is modelled as a linear hysteretic continuum and the excitation consists of a sinusoidally time-varying horizontal force or moment, applied at the pile head. Comprehensive plots of the results are presented in non-dimensional form, for a wide range of the most significant dimensionless groups of problem parameters. For the response of flexible piles, in particular, simple algebraic expressions are developed in terms of the ratio youngs modulus of pile/youngs modulus of soil at depth equal to pile diameter, of the pile and soil moduli. These expressions, being valid for several values of Poisson's ratios of the soil, compare favourably with results from previous studies and are expected to be useful in practical design calculations. (Author/TRRL)

  • Availability:
  • Authors:
    • Krishnan, R
    • Gazetas, G
    • Velez, A
  • Publication Date: 1983-9

Media Info

  • Features: Figures; References;
  • Pagination: p. 307-325
  • Serial:
    • Geotechnique
    • Volume: 33
    • Issue Number: 3
    • Publisher: Thomas Telford Limited
    • ISSN: 00168505

Subject/Index Terms

Filing Info

  • Accession Number: 00389497
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Oct 30 1984 12:00AM