Abstract
A general picture of the current state of the art and the emerging technology for dealing effectively with the design and analysis of pile foundations in liquefiable soils is presented. Two distinct design cases are considered and illustrated by case histories. One is pile response to strong shaking accompanied by the development of high pore water pressures or liquefaction and the other is the response to the pressures and displacements caused by lateral spreading of liquefied ground. Analyses of centrifuge tests on pile foundations are used to demonstrate current capacity for reliable analysis of piles under strong shaking. An example from practice involving 1.5 m cast in place reinforced concrete piles supporting a 14 storey apartment building located on reclaimed land in liquefiable soils is presented to illustrate the advantages of a comprehensive analysis in evaluating a proposed design.
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