In order to better reveal the damage constitutive relation of saturated aeolian soil deformation under complex stress state

the statistical damage theory of micro-unit strength with the Weibull random distribution was introduced to saturated aeolian soil.A statistical damage and hardening model of saturated aeolian soil was established to reflect the full process of saturated aeolian soil deformation by using the full stress-strain curve of conventional triaxial test.The relationship between constitutive model parameters of m

F0 of saturated aeolian soil statistical damage based on Weibull distribution and the confining pressureσ3 was discussed by the fitting analysis

and its parameters were modified scientifically.Finally

a statistical damage and hardening model discribing saturated aeolian soil more objectively was obtained which can be applied to the complex stress environment.By comparison between theoretical and experimental results

it is revealed that the model is reasonable which can not only truly reflect the full deformation process of saturated aeolian soil but also show the impact of pore water pressure upon engineering properties of saturated aeolian soil.