混凝土坝的损伤及损伤仿真计算

Damage to concrete dams and its simulation calculation

通过对混凝土坝体破坏机理的损伤分析 ,介绍了坝体损伤计算、损伤场计算和损伤仿真计算的概念、理论和方法 ,并进行了坝体损伤仿真计算 .在坝体损伤仿真计算中 ,考虑到温度损伤与荷载损伤的不同 ,采用了温度损伤概化模型及相应的损伤演变方程 ;同时还考虑到拉、压损伤的等效性 ,引入了相同应变水平下混凝土拉、压损伤的等价系数 .

Based on the analysis of the mechanism of damage to concrete dams, the concept, theory and methods are introduced for damage calculation, damage field calculation, and damage simulation, and damage simulation calculation is carried out for a concrete dam. In consideration of the difference between thermal damage and load-induced damage, a thermal damage model and its corresponding damage development equation are used in calculation. In addition, an equivalence coefficient of tension damage and compression damage of concrete under equal strains is introduced into calculation due to the equivalence of tension damage and compression damage.