Numerical simulation study on progressive destruction and 
failure mechanism of bedding rock slopes

YU Fei; CHEN Shan-xiong; YU He-ping

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Numerical simulation study on progressive destruction and failure mechanism of bedding rock slopes

更新时间：2026-06-25

- Numerical simulation study on progressive destruction and failure mechanism of bedding rock slopes
- Vol. 26, Issue S2, (2005)
- 作者机构：
  
  中国科学院武汉岩土力学研究所,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU454
- Online First：16 December 2005，
  
  Published：2005
- 稿件说明：
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YU Fei, CHEN Shan-xiong, YU He-ping. Numerical simulation study on progressive destruction and failure mechanism of bedding rock slopes[J]. 2005, 26(S2).
DOI：

YU Fei, CHEN Shan-xiong, YU He-ping. Numerical simulation study on progressive destruction and failure mechanism of bedding rock slopes[J]. 2005, 26(S2). DOI：

摘要

提出了利用Lagrangian乘子网格来模拟顺层边坡层间结构面接触行为的方法，并推导了考虑接触约束的Lagrangian控制方程的弱形式及其有限元离散方程。Lagrangian乘子网格容许界面出现较大的切向滑移，较好地解决了接触问题中的高度非线性和响应不平滑性。应用以上方法对沪－蓉－西高速公路某顺层岩质高边坡进行了数值模拟分析，得到了临滑状态下的位移场、应力应变场、结构面上的接触状态、层间滑移距离以及接触摩擦力的分布规律。数值模拟结果表明，顺层岩质边坡的破坏是一个渐进的过程，由最初的层间错动，发展为顺层蠕滑，最后在坡底剪出而破坏；其破坏型式由最初的顺层滑动逐步向溃曲破坏转化。

Abstract

The Lagrangian multiplier mesh is applied to simulate the contact property of the bedding plane of rock slope. The weak formulation of the Lagrangian control equations considering the contact constraint conditions and the finite element discrete equations have been derived. The suggestion method can solve the nonlinear and non-smooth problems of the mechanical response perfectly and tolerance large tangential slipping of the contact surface. A bedding rock slope of the Hu-Rong-Xi Expressway is analyzed applying the method mentioned above. The distribution rules of the displacement

stress

strain

contact state

contact friction faoce and sliding distance under the status of critical sliding are obtained. The numerical simulation results indicate that the destruction of the bedding slope is a progressive course. The interlayer stagger firstly

then the deformation evolves to creep bedding slip and the bottom rock occurs burst slide at last. The destruction model changes form the bedding slide to rock burst slide.

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