Drained solution for cylindrical cavity expansion in modified Cam clay soil under constant vertical stress

Cavity expansion is a fundamental theoretical problem in geomechanics. For the cylindrical cavity problem, derivations of solutions are usually based on assumption that soil subject to plane strain condition. However, this untrue for pressuremeter tests. This study first derived equilibrium equation under constant vertical stress Then, was solved modified Cam clay soils with different overconsolidation ratios (OCRs). The were compared responses same It found ratio limiting pressure latter former ranged from 1.31 2.76 and increased an increase OCR. Under condition, significant heaving occurred vicinity cavity, volumetric evolved contraction dilation as OCR increased. Significant differences noted paths two loading conditions. These results indicate condition will lead overestimation inaccurate prediction path test, especially heavily overconsolidated soils.