Analytical model for friction piles in consolidating soft soils

Abstract

In this paper, a simplified analytical model for the design of friction piles foundations in an environment
that is prone to regional subsidence is presented. The model is based on Mindlin’s equations and was
originally proposed by Reséndiz and Auvinet. Some important modifications of the original version
based on the results obtained from numeric analyses have been introduced. In this new version, negative
skin friction is evaluated taking into consideration initial and future effective stresses conditions and not
only the limit shear strength of the soil in contact with the pile system. The model was validated with
results previously obtained by the authors using the Axisymmetric Finite Element Method. In spite of the
differences observed during such validation, it was possible to conclude that a reasonably good match
exists between both models.