Effect of Hydro-Mechanical Hysteresis on Active Earth Pressure for Unsaturated Soils

Stability analysis of retaining structures carried out at unsaturated conditions mainly dismissed the effect hydraulic and mechanical hysteresis on exerted active thrust. This paper reports a parametric study into influence as well soil types earth pressure low high suction profiles to envision pattern thrust for various simulated soils, from sands clays. Generally, numerical results exhibited non-linear relationship between suction. The was seen very significant. A reduction in P 1.62 fold s = 137.34 kPa, owing hysteresis, obtained when comparing two soils; silt clay. with wider capillarity range showed higher positive