Bearing capacity of around unconfined cube soil using numerial analysis method

Bearing capacity of cube soil under the slabs of slabs underpinning method belongs to three-dimensional slope stability problems. Pressing steady ultimate bearing capacity of several familiar soils is obtained through top pressing three-dimensional ANSYS analysis of single block soil or cinquefoil soil. With soils changing from clay to silt and depth of digging soil increasing, the pressing steady ultimate load bearing capacity decrease gradually. With top press of the soil increasing, through the change of soil displacement isoline the following conclusions can be arrived: the scope of maximal displacement zone developing from initial rotundity which diameter equals to cube hemline to ellipse overlapping whole computation scope, and near ultimate load bearing capacity the shape of maximal displacement zone approaches to sliding surface curves of Prandtl.