Study on Stochastic Damage Constitutive Law for Concrete Material Subjected to Uniaxial Compressive Stress

Based on the study of the stochastic damage constitutive of concrete material subjected to uniaxial tensile stress,this paper studies further the stochastic damage constitutive of concrete material subjected to uniaxial compressive stress.The mechanic model of concrete material subjected to uniaxial compressive stress is established by considering the effect of each composition in the concrete material.Through the introduction of the failure strain stochastic field of concrete material subjected to uniaxial tensile stress,and in the light of the energy conservation during the process of damage failure,the stochastic damage constitutive equation of concrete material subjected to uniaxial compressive stress is derived.In order to testify the validity of the model,the calculated result is compared with the experiment data.It is shown that the model fits well with the experiment data.