Study on statistical damage constitutive model in consideration of damage threshold

Based on statistical damage theory,it is put forward that damage threshold should be considered in statistical damage constitutive model and a statistical damage constitutive equation is established in consideration of the impact of damage threshold.Conventional triaxial compression test results of gypsum breccias are taken as example to verify the model.Through the contrast between theoretical calculated results and conventional test results,it is showed that statistical damage constitutive model in consideration of damage threshold is rational.