土工基础

›› 2018, Vol. 32 ›› Issue (5): 532-535.

• 工程实录 • 上一篇    下一篇

强降雨下软弱高陡边坡安全性评估方法研究

罗光财1，陈淼权2，危春华1，雍 邦1，杨 勇1   

  1. （1.中建五局土木工程有限公司，长沙 410000；2.湘潭大学土木工程与力学学院，湖南湘潭 411105）
  • 收稿日期:2017-12-11 修回日期:2017-12-20 出版日期:2018-10-30 发布日期:2018-11-02
  • 作者简介:罗光财（1979-），男，硕士，高级工程师，研究方向为土木工程施工管理和咨询等。

Stability Evaluation of Weak Slopes under Heavy Precipitation

LUO Guangcai1, CHEN Miaoquan2, WEI Chunhua1, YONG Bang1, YANG Yong1   

  1. (1.CCFEB Civil Engineering Co., Ltd., Changsha 410000;
    2.College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105)
  • Received:2017-12-11 Revised:2017-12-20 Online:2018-10-30 Published:2018-11-02

摘要： 为更有效地监测、预测以及控制高陡边坡的滑坡失稳，以某公路工程的高陡边坡为研究对象，采取传统极限平衡法与有限元强度折减相结合，并结合现场变形监测对其稳定性做出了评估。首先通过GeoStudio极限平衡分析软件对高陡边坡的稳定系数进行确定，再通过Abaqus有限元强度折减法对变形特征进行分析，最后与现场变形监测数据进行对比。结果表明：降雨等因素对边坡稳定性影响显著，极限平衡法与有限元强度折减相结合能较为准确预测边坡变形特征与位移，可用于高陡边坡安全性评估。

关键词: 边坡, 稳定性分析, 有限元强度折减, 安全性评估

Abstract: This paper presents a case history of effectively monitoring, predicting and mitigating the landslides of large highway slopes. The conventional limit equilibrium method and finite element method using strength reduction are used in the stability evaluation and the results are compared with the monitoring data. In the stability analysis, the limit equilibrium method was performed by using the commercial software GeoStudio. And the finite element simulation was conducted using ABAQUS software. The results indicate that, the precipitation has a strength effect of the stability of highway slopes. The deformation of the highway slopes can be estimated using the combination of limit equilibrium and finite element methods.

Key words: Slopes, Slope Stability Analysis, Strength Reduction in Finite Element Analysis, Safety Assessment