土工基础

›› 2013, Vol. 27 ›› Issue (6): 41-46.

• 工程实录 • 上一篇    下一篇

基于有限元法的顺层岩质边坡锚杆加固稳定性分析

汪 勇1，皮崇斌2   

  1. (1.武汉市市政工程质量监督站，武汉 430023； 2.武汉市建筑市场管理站，武汉 430023)
  • 收稿日期:2013-07-17 出版日期:2013-12-20 发布日期:2013-12-21
  • 作者简介:汪勇，武汉市市政工程质量监督站，高级工程师。

Stability Analysis of Rock Anchored Syncline Slope Using Finite Element Method

WANG Yong1, PI Chongbin2   

  1. （1. Municipal Engineering Construction Quality Assurance Station, Wuhan 430023;2. Municipal Construction Market Administration, Wuhan 430023)
  • Received:2013-07-17 Online:2013-12-20 Published:2013-12-21

摘要： 结合某道路顺层岩质高切边坡实例，运用大型有限元软件MIDAS/GTS建立顺层岩质边坡的平面应变二维模型，基于有限元强度折减法，对锚杆加固前后的边坡稳定性进行了研究，主要分析了锚杆加固前后边坡位移、塑性破坏区以及安全系数的变化；同时着重讨论了锚固长度、锚杆间距、倾角等因素对边坡整体稳定性的影响，对影响边坡整体稳定性的因素进行了敏感性研究，分析了各因素与边坡安全系数之间的函数曲线关系。

关键词: 顺层岩质边坡, 锚杆加固, 稳定性, 强度折减, 有限元分析

Abstract: This paper presents a case study of the analysis of a highway cut of a syncline rock slope. The rock anchored slope was evaluated with two dimensional plane strain finite element model using MIDAS GTS commercial software. The stability of the rock slope before and after the rock anchor reinforcement is analyzed based on the strength reduction method. The displacement, plasticity zone and the factor of safety changes before and after the reinforcement are presented. The effect of length, spacing and inclination angle of the rock anchors on the stability of the slope is evaluated. The relationship between the factor of safety of the slope and the various affecting components are also investigated.

Key words: Syncline Rock Slope, Rock Anchor Reinforcement, Slope Stability, Strength Reduction Method, Finite Element Method