ORTHOGONAL ANALYSIS OF PARAMETERS IN FINITE ELEMENT METHOD FOR BIOT PLAIN CONSOLIDATION WITH DUNCAN-CHANG SOIL MODEL

The effects of parameters in the finite element analysis of Biot consolidation with Dun-Chang model on consolidation of the soft ground are studied by the method of orthogonal experiment. All the parameters are selected randomly in the analysis. The conclusions are: k、c、G、 and F play vital roles during consolidation procedure; Pc has an important effect at the beginning; Rf has little effect on consolidation if variations of the other parameters are high. The constant coefficient of permeability Kz has prominent influence at the initial stage. The results can be used as reference for test of model parameters, back analysis, stochastic study and estimation of the soft consolidation.