摘要
边坡稳定性分析是确保建设场地及相关建筑物安全的关键环节。通过三维有限元分析程序计算出的边坡塑性区分布图和位移矢量图,判定出了滑动面的位置。然后采用有限元强度折减法计算出边坡在天然条件下和锚杆支护条件下的安全系数,并与传统的极限平衡方法的计算结果作了比较分析,发现两种方法的计算结果比较接近,说明用三维有限元强度折减法分析计算边坡的稳定性是可靠的,这为边坡工程的加固设计增加了一种科学的计算方法。
Stability analysis of the slope is the key link to guarantee the safety of construction field and building related. Through the chart of plastic zone and displacement vector which calculated by three dimensional finite element analysis program, it may determine the position of the sliding surface. Then it calculates the safety factors of slope under the conditions in nature and bolt supporting with the strength reduction FEM, and makes the comparative analysis with the traditional limiting equilibrium method, it shows the result is quite close with each other. So it proves this method is reliable and it also provides the scientific reference for the reinforcement design of slope engineering.
出处
《勘察科学技术》
2007年第4期3-5,共3页
Site Investigation Science and Technology
关键词
边坡稳定分析
三维有限元
本构模型
强度折减
安全系数
slope stability analysis
3D FEM
constitutive model
strength reduction
safety factor
