| 剪胀角对求解边坡稳定的安全系数的影响 |
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| 引用本文： | 张培文,陈祖煜.剪胀角对求解边坡稳定的安全系数的影响[J].岩土力学,2004,25(11):1757-1760. |
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| 作者姓名： | 张培文 陈祖煜 |
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| 作者单位： | 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： | 分析了目前用有限元方法求解安全系数时所存在的问题，同时，对于岩土边坡采用平面应变条件下基于非关联流动法则的D-P屈服准则，充分考虑岩土的剪胀性对边坡稳定安全系数的影响，修正了对于剪胀性的传统处理方法：过大的考虑材料的剪胀性的特点（ ）和完全不考虑材料的剪胀性的特点（ ）。算例结果分析表明，安全系数随剪胀角的增大而增大，在考虑剪胀性时，采用不同的屈服准则对边坡的安全系数是有很显著的影响的，误差可达30 %左右。
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| 关 键 词： | 剪胀性 屈服准则 安全系数 |
| 文章编号： | 1000-7598-(2004)11-1757-04 |
| 收稿时间： | 2003-09-04 |
| 修稿时间： | 2003年9月4日 |
Finite element method for solving safety factor of slope stabilily |
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| ZHANG Pei-wen,CHEN Zu-yu.Finite element method for solving safety factor of slope stabilily[J].Rock and Soil Mechanics,2004,25(11):1757-1760. |
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| Authors: | ZHANG Pei-wen CHEN Zu-yu |
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| Institution: | China Institute of Water Resources and Hydropower Research, Beijing 100044, China |
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| Abstract: | Some problems existing in the finite element method for solving safety factor of slope stability, are analyzed. The significance of dilatancy character of rock and soil slope are considered in calculation of safety factor based on the non-associative flow criterion under plane strain condition; the traditional method which overstates or ignores the significance of the rock and soil dilatancy is modified. The results of the example show that the safety factor is increased when the angle of the dilatancy is increased; and the different yield criterions have great effect on the safety factor; the maximum error is to 30 %. |
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| Keywords: | character of dilatancy yield criterion safety factor |
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