混凝土损伤模型及断裂判据  

Damage Model of Concrete and Fracture Criteria

作　　者：周青松[1] 于清树[1] 

机构地区：[1]安徽工业大学职业技术学院,安徽省马鞍山市243011

出　　处：《矿业快报》2008年第8期60-62,共3页Express Information of Mining Industry

摘　　要：以混凝土单轴拉压损伤为基础,给出了单元弹性损伤本构关系,分析了裂纹尖端损伤微裂区尺寸,定义了有效应力强度因子,推出了混凝土Ⅲ型裂纹在载荷作用下裂纹附近的损伤场,给出了Ⅲ型裂纹损伤断裂判据。Based on uniaxial tensile and unit elasticity damage was given. The crazing compressive damage of concrete, the constitutive relation of damag stress strength factor was defined. The damage field damage fracture criteria of Ⅲ crack was given. e size on the top of crack was analyzed. The effective near Ⅲ crack in concrete under load was derived and

关 键 词：混凝土 损伤断裂 Ⅲ型裂纹 断裂判据 有效应力强度因子 

分 类 号：TU528[建筑科学—建筑技术科学]