| 有限元强度折减法在膨胀土路堑滑坡分析中的应用 |
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| 引用本文： | 谭波,杨和平.有限元强度折减法在膨胀土路堑滑坡分析中的应用[J].公路,2006(4):171-176. |
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| 作者姓名： | 谭波 杨和平 |
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| 作者单位： | 1. 桂林工学院,桂林市,541004;长沙理工大学,长沙市,410076
2. 长沙理工大学,长沙市,410076 |
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| 基金项目： | 交通部交通建设科技项目 |
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| 摘 要： | 膨胀土路堑滑坡机理复杂,传统边坡分析方法无法对它进行分析并得出合理解释。而有限元强度折减法可采用岩土材料的非线性弹塑性本构关系,能考虑膨胀力等因素的作用,通过计算坡体的应力与应变,合理分析土坡变形过程和潜在滑动面,并采用安全系数评价边坡稳定性,较好地解决了膨胀土边坡稳定性及滑坡处治效果分析问题。应用有限元强度折减法,分析了南友路膨胀土滑坡规律,以及柔性支挡的处治效果。
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| 关 键 词： | 膨胀土 路堑滑坡 有限元 柔性支挡 |
| 文章编号： | 0451-0712（2006）04-0171-06 |
| 收稿时间： | 2005-11-13 |
| 修稿时间： | 2005-11-13 |
Appliance of Strength Reduction Method with FEM to Analyzing Landslide of Dilative Soil Road Cut |
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| TAN Bo,YANG He-ping.Appliance of Strength Reduction Method with FEM to Analyzing Landslide of Dilative Soil Road Cut[J].Highway,2006(4):171-176. |
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| Authors: | TAN Bo YANG He-ping |
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| Institution: | 1. GuiLin University of Technology GuangXi GuiLin 541001; 2. ChangSha University of Science and technology HuNan ChangSha 410076 |
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| Abstract: | The mechanism of landslide of dilative soil road cut is complex,so the traditional slope analysis method is unable to analyze it and obtain the reasonable explanation.But the shear strength reduction method with FEM can adopt the elastoplastic relation,the effect of the factor can be taken such as expansibility into account.Through calculating the stress and strain of slope body,the distortion process of earth slope and the latent sliding plane are analyzed reasonably,the safety factors to evaluate the slope stability is adopted,the problems of dilative soil stability and landslide treating effect are preferably solved.The shear strength reduction method with FEM is applied to analyze the rule of Nanyou Road dilative soil landslide and the treating effect of flexible shoring. |
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| Keywords: | dilative soil landslide of road cut FEM flexible shoring |
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