Determination of shear sliding section and its effect on stability of flathead shaped excavated slope

SHAO Jiang; XIE Hong-qiang; ZHOU De-pei

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Determination of shear sliding section and its effect on stability of flathead shaped excavated slope

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- Determination of shear sliding section and its effect on stability of flathead shaped excavated slope
- Vol. 28, Issue 2, (2007)
- 作者机构：
  
  1. 西南交通大学土木工程学院,成都,610031
  2. 四川省交通厅公路设计研究院,成都,610041
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：28 August 2013，
  
  Published：2007
- 稿件说明：
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SHAO Jiang, XIE Hong-qiang, ZHOU De-pei. Determination of shear sliding section and its effect on stability of flathead shaped excavated slope[J]. 2007, 28(2).
DOI：

SHAO Jiang, XIE Hong-qiang, ZHOU De-pei. Determination of shear sliding section and its effect on stability of flathead shaped excavated slope[J]. 2007, 28(2). DOI：

摘要

对公路的平顶形边坡开挖进行了受力分析，提出了确定坡脚剪滑段的方法，指出在剪滑段范围内岩土体的抗剪强度降低，从而导致坡体稳定性下降。实例表明，在考虑剪滑段力学性质差异的情况下，通过极限平衡法搜索的最危险滑动面退化为次危险滑动面，且坡面分阶对坡脚应力集中的消散作用。

Abstract

Stress analysis of flathead shaped slope in highway excavated slope is conducted with advancing exterminating methods of shear sliding section at the toe of slope

and pointing out that in the range of shear sliding section

depressed shear strength of geotechincal mass will result in knock-down of slope stability. Examples show that with consideration of differences of mechanical properties in shear sliding section

maximum dangerous slide face by method of limit equilibrium will degenerate into vice dangerous slide face; and stepping slope face will dissipate stress concentration at the toe of slope.

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