中文摘要：

将统计学方法与细观力学方法结合，采用平行杆模型模拟混凝土等脆性材料单轴受压的损伤演化规律。研究了基于Weibull 强度理论的混凝土细观统计损伤本构模型，并通过冻融后的混凝土单轴受压本构试验，拟合出模型相关参数 m 和ε0，提出了基于细观统计损伤力学的混凝土冻融损伤本构方程。最后通过非线性有限元分析软件 ABAQUS 对提出的模型进行数值模拟，并与试验结果对比分析，验证了所提出模型的合理性。

英文摘要：

Statistical methods was combined with micromechanics.Based on the parallel bar system,the damage law of the concrete ma-terials subjected to uniaxial compressive stress was simulated.Furthermore,the meso - statistical damage constitutive of concrete materi-als was studied base on Weibull′s statistical theory of the strength of materials.While according to constitutive uniaxial compression test of concrete material after freezing and thawing,the parameters m and ε0 of the model were fitted.Then the freezing - thawing damage constitutive equation of concrete was proposed base on meso - statistical damage mechanics.Finally,the model was simulated by non -linear finite element analysis software ABAQUS,then compared with the experimental results,and the rationality of the proposed model was verified.