混凝土Ⅰ型裂缝的损伤断裂判据

DAMAGE AND FRACTURE CRITERION FOR MODE I CRACK OF CONCRETE

把损伤理论引入混凝土的断裂分析中,推导出混凝土Ⅰ型裂缝在静、动荷载作用下裂缝端部损伤区长度的计算公式,给出了混凝土允许损伤尺度的定义、计算公式和新的损伤断裂判据,实现了损伤与断裂力学的有机结合。提出的损伤断裂判据与国内外一系列实验结果吻合良好。

Damage theory is used to the concrete fracture criterion. The boundary equations of damage zone under static and dynamic loading are obtained. The new concrete “damage-fracture criterion” is developed by the new concept of allowed damage length. The experimental results and prediction ones from the formula of damage length are in good agreement.