| 混凝土裂缝在拉应变下的损伤与断裂分析 |
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| 引用本文： | 邓宗才,聂雪强,郑俊杰. 混凝土裂缝在拉应变下的损伤与断裂分析[J]. 华中科技大学学报(自然科学版), 1999, 0(2) |
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| 作者姓名： | 邓宗才 聂雪强 郑俊杰 |
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| 作者单位： | 山东建材学院建筑工程系(邓宗才)，胜利油田电厂(聂雪强)，华中理工大学土木工程系(郑俊杰) |
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| 摘 要： | 基于最大拉应变断裂理论，推导出了混凝土Ⅰ和Ⅱ复合型裂缝在静力荷载作用下缝端附近损伤区的边界方程式，给出了允许损伤尺度的定义、计算公式和损伤断裂判据，实现了损伤与断裂力学的有机结合．计算求得的损伤区长度与实测结果基本相符．
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| 关 键 词： | 混凝土；复合型裂缝；断裂；损伤 |
The Damage and Fracture Criterion for Mixed Mode Crack of Concrete on the Basis of the Maximum Strain Theory |
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| Deng Zongcai Nie Xueqiang Zheng Junjie. The Damage and Fracture Criterion for Mixed Mode Crack of Concrete on the Basis of the Maximum Strain Theory[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1999, 0(2) |
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| Authors: | Deng Zongcai Nie Xueqiang Zheng Junjie |
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| Affiliation: | Deng Zongcai Nie Xueqiang Zheng Junjie |
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| Abstract: | On the basis of the maximum circumference strain theory, the boundary equation of damage field near the tip of mixed mode crack is proposed. The concept and the formula of the allowed damage length are obtained. The Damage Fracture Criterion is developed by means of the concept of damage length. The experiment results and the prediction ones from the formula of damage length are good agreement. |
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| Keywords: | concrete mixed mode fracture damage |
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