EFFECT OF STONE COLUMN YIELD ON SETTLEMENT OF RIGID FOUNDATIONS IN STABILIZED CLAY

The results of an analytic solution for the settlement, assuming no yield occurs in the clay or columns, have been presented in a previous publication. This solution is now used to develop an interaction analysis which takes account of yielding within the stone columns. This interaction analysis is based on a number of plausible assumptions regarding the behavior of the clay and columns. Elasto-plastic finite element analyses have been performed and the agreement between the two methods is very good. However, the computational effort required for the finite element analyses is many orders of magnitude greater than that for the interaction analysis.