Three-dimensional finite element studies of the moment-carrying capacity of short pier foundations in cohesionless soil


Laman M., King G., Dickin E.

COMPUTERS AND GEOTECHNICS, vol.25, no.3, pp.141-155, 1999 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 3
  • Publication Date: 1999
  • Doi Number: 10.1016/s0266-352x(99)00019-1
  • Title of Journal : COMPUTERS AND GEOTECHNICS
  • Page Numbers: pp.141-155

Abstract

This study is concerned with the moment-carrying capacity of short pier foundations in loose and dense cohesionless soil. The results of non-linear three-dimensional finite element analyses are compared with data from centrifuge tests modelling the behaviour of 1 m diameter prototype piers. The numerical predictions are shown to be very sensitive to the value of coefficient of earth pressure at rest, K-0, and most closely match observations when K-0 = 0.6 is assumed. The results of parametric studies of square prototype piers in loose and dense cohesionless soils are then presented. Empirical equations are derived between moment-carrying capacity and pier geometry, for limiting pier rotations of 1 degrees and 2 degrees, and very close fits are demonstrated between the values given by these equations and the original computed values. (C) 1999 Elsevier Science Ltd. All rights reserved.