| 边坡失稳机理的力学解释 |
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| 引用本文： | 戴自航,卢才金.边坡失稳机理的力学解释[J].岩土工程学报,2006,28(10):1191-1197. |
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| 作者姓名： | 戴自航 卢才金 |
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| 作者单位： | 福州大学土木工程学院岩土工程研究所；福建省交通规划设计院 福建福州350002；福建福州350004； |
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| 基金项目： | 国家自然科学基金;福建省自然科学基金;福州大学校科研和教改项目 |
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| 摘 要： | 从力学意义上对岩土体屈服破坏行为进行了分析,指出了摩尔-库仑剪切屈服准则在边坡稳定分析中存在的问题,分别采用摩尔-库仑屈服准则和张拉-剪切复合屈服准则对边坡内部最危险滑动面的形成机理进行了直观的解释,并以强度折减有限元法的实例分析进行了验证。大量滑坡事故现场踏勘和勘察表明,滑动面的实际情况常与张拉-剪切复合屈服准则的理论分析结果相吻合。
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| 关 键 词： | 屈服准则 边坡稳定 最危险滑动面 形成机理 强度折减有限元法 |
| 文章编号： | 1000-4548（2006）10-1191-07 |
| 收稿时间： | 2005-07-22 |
| 修稿时间： | 2005-07-22 |
Mechanical explanations on mechanism of slope stability |
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| DAI Zi-hang,LU Cai-jin.Mechanical explanations on mechanism of slope stability[J].Chinese Journal of Geotechnical Engineering,2006,28(10):1191-1197. |
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| Authors: | DAI Zi-hang LU Cai-jin |
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| Affiliation: | 1.Institute of Geotechnical Engineering College of Civil Engineering Fuzhou University Fuzhou 350002 China 2.Fujian Design Institute of Communication Fuzhou 350004 China |
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| Abstract: | Yield and failure behaviors of rock and soil masses were analyzed from the mechanical meanings.Some problems were pointed out when slope stability was analyzed with Mohr-Coulomb’s failure criterion.The intuitionistic explanations of the mechanism for formation of critical slip surfaces in slopes were given by adopting Mohr-Coulomb’s failure criterion and tension-shear composite failure criterion respectively.Several examples were given by using strength reduction finite element method.It was shown by field examinations and reconnaissance of many landslides that the practical slip surfaces could be explained by using tension-shear composite failure criterion. |
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| Keywords: | yield criterion slope stability critical slip surface formation mechanism strength reduction finite element method |
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