| 边坡稳定临界破坏状态的动力学评判方法 |
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| 引用本文： | 吴春秋,朱以文,蔡元奇.边坡稳定临界破坏状态的动力学评判方法[J].岩土力学,2005,26(5):784-788. |
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| 作者姓名： | 吴春秋 朱以文 蔡元奇 |
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| 作者单位： | 1.武汉大学 土木建筑工程学院，武汉 430072；2.中国建筑科学研究院地基所，北京 100013 |
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| 摘 要： | 针对目前用有限单元法分析边坡稳定时，对临界状态判别存在的一些问题和不足，提出了边坡稳定临界破坏状态的动力学评判方法。该方法以加速度是否为零作为边坡是否稳定的判据，同静力方法相比，具有物理意义明确，计算易收敛等优点。在分析滑动本质的基础上，提出通过搜索剪应变最大的点以确定临界滑裂面的方法。算例证明了临界状态动力学评判方法的可靠性。
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| 关 键 词： | 边坡稳定 临界状态 强度折减有限元法 动力分析方法 滑裂面 |
| 文章编号： | 1000-7598-(2005)05-0784-05 |
| 收稿时间： | 2004-01-08 |
| 修稿时间： | 2004年1月8日 |
Dynamic method to assess critical state of slope stability |
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| WU Chun-qiu,ZHU Yi-wen,CAI Yuan-qi.Dynamic method to assess critical state of slope stability[J].Rock and Soil Mechanics,2005,26(5):784-788. |
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| Authors: | WU Chun-qiu ZHU Yi-wen CAI Yuan-qi |
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| Institution: | 1．School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China； 2. Institute of Foundation Engineering, CABR, Beijing 100013, China |
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| Abstract: | The method to assess the critical state of slope stability is studied. There are some shortcomings in the current methods, and a new method named dynamic method is presented. In the dynamic method, the value of acceleration whether equate zero is used to assess the slope stability. Comparing with the static method, the dynamic method has clear physical meaning and the solution convergence become easier. A method to search for critical slip surfaces through search for points those shears strains are maximal is also presented. The examples have shown the reliability of the dynamic method. |
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| Keywords: | slope stability critical state strength reduction FEM dynamic method slip surface |
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