混凝土损伤的非线性细观统计模型

A NON-LINEAR MESOSCOPIC STATISTICAL MODEL OF CONCRETE DAMAGE

本文利用概率统计的方法，把以体积应变定义的混凝土损伤非线性变形用随机分布裂缝的几何特征尺寸形式给出，并以界面位移跃度解作为对结合缝开裂的描述。计算表明。由于该模型接近混凝土实际结构，对混凝土非线性的描述也具有相当的精度。

By means of a probability statistical method,the non-linear deformation of concrete dam-age defined by volumetric strain is given in the form of specific geotnetric dimensions of ran-domly distributed cracks. The interface cleavage is described by the crack surface displace-ment jump. solution. Calculation shows that as the design of this model resembles the actualstructure of concrete quite well,the non-linearity description of concrete can surely be madequite precise.