| 混凝土翼裂纹损伤区与断裂区边界方程探讨 |
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| 引用本文： | 李芮,向中富.混凝土翼裂纹损伤区与断裂区边界方程探讨[J].重庆交通大学学报(自然科学版),2010,29(2):188-189,284. |
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| 作者姓名： | 李芮 向中富 |
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| 作者单位： | 重庆交通大学,土木建筑学院,重庆,400074;重庆交通大学,土木建筑学院,重庆,400074 |
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| 摘 要： | 应用西多霍夫损伤模型和断裂力学耦合分析方法,探讨了单向受压的翼形裂纹,推导出混凝土翼形裂纹损伤区与断裂区的边界方程,确定了混凝土翼裂纹初始损伤区和断裂区的径向尺寸,最后确定了不同翼裂纹倾角的起裂点坐标,为研究混凝土翼裂纹的扩展提供了新的可行性思路。
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| 关 键 词： | 混凝土 翼形裂纹 断裂与损伤耦合 |
Study on Boundary Equations between Damage Zone and Fracture Zone for Wing Cracks in Concrete |
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| Abstract: | The wing cracks due to unidirectional compression in concrete were analyzed by coupling the Sidoroff damage model with fracture mechanics. Boundary equations between damage zone and fracture zone were derived to determine the radial sizes of initial damage and fracture zones due to wing cracks. Finally,the coordinate of initial cracking point of different wing cracks was determined and new feasibility idea was provided for study the wing cracks intended in concrete. |
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| Keywords: | concrete wing crack coupling of fracture and damage |
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