THREE-DIMENSIONAL NONLINEAR STUDY OF PILES

A critical examination of the nonlinear axial and lateral responses of pile foundation to static monotonic and cyclic loads by means of a 3-dimensional finite element model is reported. A limited parameteric study of the response of a single pile and of a pair of piles subjected to concentrated loads at their heads was conducted in order to examine the effects of soil plasticty, slippage, and separation between piles and the soil. The analysis involving pairs of piles demonstrated that as a result of the nonlinear behavior of the soil and the pile-soil interface the interaction between piles, especially under axial load, is reduced greatly compared to that for an elastic soil bonded to the piles. Thus, commonly used methods for evaluating pile-soil-pile interaction can substantially overestimate the degree of interaction in realistic situations. Also, when separation is permitted, two closely spaced laterally loaded piles indicate that the trailng pile deforms more than the leading one, despite the stiffening effect observed when only one pile is pushed towards the other.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 429-447
  • Serial:

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Filing Info

  • Accession Number: 00605251
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 31 1991 12:00AM