AN ANALYTICAL SOLUTION OF RADIAL CONSOLIDATION CONSIDERING THREE NON-LINEAR RELATIONSHIPS OF SOFT SOILS

Most analytical solutions of sand and wick drains are combined with one-dimensional consolidation theory. The soil is considered as a linear poroelastic solid. But researches show that, under the isotropic consolidation, the average effective stress and permeability coefficient both have semi-logarithmic relationships with the void ratio. At the same time, experiments show that the permeability around PVD in smear zone is distributed in parabolic form. Therefore, to consider the effects of these three non-linear relationships, the analytical solution to this problem is derived in this paper. Correctness of this analytical solution is verified through degradation method. In addition, effects of parameters of Cc/Ck and on consolidation are analyzed. The results show that the rate of consolidation under Cc/Ck1 is faster than that of Cc/Ck1; and the rate of consolidation decreases with the growth of .