This paper mainly carried out analytical theory for consolidation and its engineering performance of double-layered composite ground with granular columns considering smear effects and stress concentration effects,and discussed possible variational laws considering different cases,also with the common applicability of this analytical theory.

Then the definition of the angle of consolidated undrained shearing resistance for normally consolidated soil is emphasized that it should represent the rate of increase of undrained strength with increasing consolidation stress before shearing, so that the co.