| 裂隙岩体加载和卸荷条件下应力强度因子 |
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| 引用本文： | 周小平,张永兴,哈秋聆. 裂隙岩体加载和卸荷条件下应力强度因子[J]. 地下空间与工程学报, 2003, 23(3): 277-280 |
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| 作者姓名： | 周小平 张永兴 哈秋聆 |
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| 作者单位： | 重庆大学土木工程学院,重庆,400045;上海交通大学建筑工程学院,上海,200030;重庆大学土木工程学院,重庆,400045 |
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| 基金项目： | 国家自然基金资助 5 96 4 90 0 8 |
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| 摘 要： | 裂隙岩体在加载和卸荷条件下的力学特性有显著的区别。研究裂隙岩体在卸荷条件下的变形和强度特性具有重要的理论和现实意义。本文利用断裂力学知识 ,分析了单轴、三轴加载 ,单轴卸荷、围压卸荷和轴压卸荷各阶段的应力强度因子 ,给出了各种情况下应力强度因子的显式表达式 ,并研究了单轴、三轴加载和单轴卸荷、围压卸荷和轴压卸荷各阶段的应力强度因子的相同和不同点。对实际岩体工程具有重要的参考价值
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| 关 键 词： | 加载 卸荷 应力强度因子 |
| 文章编号： | 1001-831X(2003)03-0277-04 |
| 修稿时间： | 2003-04-16 |
Study on the Stress Intensity Factor for the Crack Tips under Unloading and Loading |
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| ZHOU Xiao ping et al. Study on the Stress Intensity Factor for the Crack Tips under Unloading and Loading[J]. Chinese Journal of Underground Space and Engineering, 2003, 23(3): 277-280 |
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| Authors: | ZHOU Xiao ping et al |
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| Affiliation: | ZHOU Xiao ping et al |
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| Abstract: | The mechanical behaviors of crack weakened rock mass under loading are different from those under unloading. It is important to study the strength and deformation of crack weakened rock mass under unloading. Based on the fracture mechanics, the stress intensity factor for the crack tips under loading and unloading is established and their difference is given. The conclusions can serve as reference for the rock engineering. |
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| Keywords: | loading unloading stress intensity factor |
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