| 计算边界范围的选取对渗流作用下边坡稳定性分析精度的影响 |
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| 引用本文： | 唐晓松,郑颖人,林成功. 计算边界范围的选取对渗流作用下边坡稳定性分析精度的影响[J]. 后勤工程学院学报, 2007, 23(1): 1-4 |
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| 作者姓名： | 唐晓松 郑颖人 林成功 |
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| 作者单位： | 后勤工程学院,军事建筑工程系,重庆,400041;重庆大学,土木工程学院,重庆,400030 |
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| 摘 要： | 目前针对渗流作用下边坡的稳定性分析一般都是首先通过渗流计算求得坡体内浸润面的位置,然后再进行安全系数的求解,所以当坡体后部地下水补给充足时,边界范围的选取将直接影响到坡体内浸润面的位置和安全系数的计算结果.由于PLAXIS有限元程序在渗流计算方面具有比较强大的功能,因此采用该软件对边界范围对渗流作用下边坡稳定性分析精度的影响进行研究.从算例所得到的结果看,当左边距等于10倍坡高时,安全系数的变化逐渐稳定,左边距的增大对安全系数不再产生影响.
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| 关 键 词： | 渗流作用 稳定性 浸润面 边界范围 安全系数 |
| 文章编号： | 1672-7843(2007)01-0001-04 |
| 修稿时间： | 2006-10-09 |
The Effect of Choosing Calculating Boundary on the Accuracy of Slope Stability Analysis under Seepage |
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| TANG Xiaosong,ZHENG Yingren,LIN Chenggong. The Effect of Choosing Calculating Boundary on the Accuracy of Slope Stability Analysis under Seepage[J]. Journal of Logistical Engineering University, 2007, 23(1): 1-4 |
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| Authors: | TANG Xiaosong ZHENG Yingren LIN Chenggong |
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| Abstract: | Recently,the analysis of stability is implemented by calculating the seepage for the location of the phreatic surface in the slope first,then working out the safety coefficient.As a result,if the rear part of the slope can supply enough un- derground water,the location of the phreatic surface in the slope and the calculation result of the safety coefficient would be influ- enced by the range of the boundary.Because of the powerful seepage function of PLAXIS Finite Element Method program,the effect of boundary range on the slope stability under seepage will be analyzed by this program.From the calculating example, when the left distance is 10 times of the height of the slope,the safety coefficient becomes stable gradually,and the increase of the left distance would have no effect on the safety coefficient. |
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| Keywords: | seepage phreatic surface stability boundary range safety coefficient |
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