Hydro-mechanical response of collapsible soils under different infiltration events

作者：Rotisciani G M^*; Sciarra G; Casini F; Desideri A

来源：International Journal for Numerical and Analytical Methods in Geomechanics, 2015, 39(11): 1212-1234.

DOI：10.1002/nag.2359

• water infiltration
• volumetric collapse
• stress paths
• partial saturation
• constitutive modeling

The behavior of a partially saturated soil during surface-water infiltration is analyzed by means of an elasto-plastic constitutive model formulated in terms of effective stress and extended to unsaturated conditions. The model is calibrated considering laboratory-scale experimental results under suction-controlled conditions. The wetting process in two collapsing soils, initially loaded at in situ stresses, is simulated by imposing two different boundary conditions: surface ponding and water flow. The stress paths resulting from the imbibition process are analyzed at different points inside the layer.

• 出版日期2015-8-10