The Structural Damage Properties of Loess under Loading and Moistening

Abstract

Based on the deformation properties of intact loess under the tri-axial loading and moistening, and starting from the loess structural damage and development caused by the moistening, iso-directional consolidation as well as moistening and shearing deformation, this paper seeks to obtain the variation with the stress-strain curve initial tangential modulus to reflect to intact structure damage and the secondary structure development by the moistening and consolidation as well as reflect to the moist shearing structure damage and the secondary structure development by the ideal hyperbola variation of the iso-structure stress-strain corresponding to the different stress-strain states during the process of shearing deformation, in which the whole development process are revealed, the intact loess structure varies are derived from the action of loading and moistening. Meanwhile, this paper proposed the structural damage property parameters of the intact structure damage development law that can completely the collapsible loess under the varying conditions of water content fields and stress fields; and they are used to establish the stress-strain equation for the structural loess.