| 混凝土细观力学性质对宏观断裂过程影响的数值试验 |
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| 引用本文： | 朱万成,唐春安,滕锦光,赵文. 混凝土细观力学性质对宏观断裂过程影响的数值试验[J]. 三峡大学学报(自然科学版), 2004, 26(1): 22-26 |
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| 作者姓名： | 朱万成 唐春安 滕锦光 赵文 |
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| 作者单位： | 1. 东北大学,材料破坏力学数值实验室,沈阳,110004
2. 香港理工大学,土木与结构工程系,香港 |
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| 基金项目： | 混凝土材料研究国家重点实验室访问学者资助项目 |
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| 摘 要： | 从混凝土的细观结构出发，假定混凝土是由砂浆基质、骨料及其它们之间的粘结带组成的三相复合材料，进行了混凝土中各个组成相对于宏观试样断裂特征及其强度影响的数值试验。从数值结果可以看出混凝土中砂浆基质与骨料之间的粘结带对于混凝土的宏观力学性能有较大的影响，普通混凝土在单轴载荷作用下破裂模式的数值试验结果也进一步证实了粘结带在混凝土断裂中所起的重要作用。
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| 关 键 词： | 混凝土 细观力学 断裂过程 数值试验 粘结 砂浆 单轴载荷 |
| 文章编号： | 1007-7081(2004)01-0022-05 |
| 修稿时间： | 2003-04-18 |
Numerical Test on Influence of Mesomechanical Properties on Macroscopic Fracture of Concrete |
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| Zhu Wancheng Tang Chun''''an Teng Jinguang Zhao Wen. Numerical Test on Influence of Mesomechanical Properties on Macroscopic Fracture of Concrete[J]. Journal of China Three Gorges University(Natural Sciences), 2004, 26(1): 22-26 |
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| Authors: | Zhu Wancheng Tang Chun''''an Teng Jinguang Zhao Wen |
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| Abstract: | The numerical test on the influence of mesoscopic structures on the macroscopic strength and fracture characteristics is carried out based on the assumption that the concrete is a three-phase composite composed of matrix (mortar), aggregate and bond between them. It can be found that the bond between matrix and aggregate has a significant effect on the macroscopic mechanical performance of concrete. The final numerical test on fracture of concrete specimen subjected to uniaxial compression further proves that the mechanical properties of bond are important to the fracture of this kind of concrete. |
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| Keywords: | concrete mesoscopic fracture process numerical test |
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