摘要
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.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第3期420-424,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金(60172049)资助课题
关键词
断裂力学
损伤力学
混凝土
I型裂缝
fracture mechanics,damage mechanics,concrete,criterion,mode I crack
