| 弹性模量和泊松比对边坡稳定安全系数的影响 |
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| 引用本文： | 张培文,陈祖煜. 弹性模量和泊松比对边坡稳定安全系数的影响[J]. 岩土力学, 2006, 27(2): 299-303 |
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| 作者姓名： | 张培文 陈祖煜 |
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| 作者单位： | 1. 中冶集团建筑研究总院,地基所,北京,100088
2. 中国水利水电科学研究院,岩土工程研究所,北京,100044 |
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| 摘 要： | 根据土的弹性模量和泊松比满足双曲线关系，给出了弹性模量和泊松比折减的基本原理。通过算例分析表明，调整泊松比对安全系数的求解是有影响的，而弹性模量的影响一般较小。算例亦表明，位移控制方法具有较高的稳定性和收敛性，在运用有限元强度折减方法求解边坡的安全系数时，建议采用位移控制方法来控制其收敛性。
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| 关 键 词： | 安全系数 弹性模量 泊松比 强度折减 |
| 文章编号： | 1000-7598-（2006）02-0299-05 |
| 收稿时间： | 2004-07-12 |
| 修稿时间： | 2004-07-122005-03-22 |
Influences of soil elastic modulus and Poisson''''s ratio on slope stability |
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| ZHANG Pei-wen,CHEN Zu-yu. Influences of soil elastic modulus and Poisson''''s ratio on slope stability[J]. Rock and Soil Mechanics, 2006, 27(2): 299-303 |
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| Authors: | ZHANG Pei-wen CHEN Zu-yu |
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| Affiliation: | 1. Central Research Institute of Building & Consturction MMI, Beijing 100088, China; 2. Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing 100044, China |
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| Abstract: | The reduction theory for elastic modulus and Poisson’s ratio is given according to the stress-strain hyperbolic curve of the soil. The result of an example shows that the Poisson’s ratio has a significant influence on the safety factor and the plastic zone of the slope; but the elastic modulus don’t have a significant influence; the displacement controlled-method is suggested to take for the finite element analysis to solve the safety factor of slopes because of this method is good in stability and convergence. |
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| Keywords: | safety factor elastic modulus Poisson’s ratio strength reduction |
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