Abstract
Based on the vertical equal strain assumption, there are many consolidation theories of soft soil incorporating vertical drains. Because the influence of many factors is often ignored and the flow of the pore water usually happens in three-dimensional directions, analytical solutions could not be accurate enough. Because of the amount of computer storage and the computing time needed, two-dimensional finite element analysis is used to model the stone column improving the soft foundation. The embankment load is transferred to a column because of the soil arching effect. When the embankment is constructed, the settlement accounts for 64% of the total settlement, which shows that the column can reduce the post-construction settlement. The stone column's bulge is confined to a length about one to two times the diameter of the stone column away from its top, and the column at the toe would bears the shear stress to some extent.
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