摘要
路基的开挖或填筑会对坡体的稳定性产生影响,导致变形体的进一步发展直至形成滑坡,或引起古滑坡体的复活。本文以榛子林滑坡为工程背景,通过ADINA非线性有限元程序进行计算,分析榛子林古滑坡的稳定性。分析得出,用有限元强度折减法计算边坡稳定性,塑性区贯通时,不表示此时边坡失稳就一定发生,一般塑性区贯通后继续折减材料强度才会发生位移的突变,此时才发生真正的失稳。
Roadbed excavation or filling will affect the stability of the slope, leading further development of deformed slope to landslides, or leading to the revival of the ancient landslide. This paper takes Zhenzilin landslide for example, calculates the sitope by ADINA nonlinear finite element program to analyze the stability of Zhenzilin ancient landslide. According to the analysis results, in calculating the stability of the slope by finite element strength reduc- tion method, when the plastic zone is penetrated, it does not mean that certain landslide will occur at this time. Gen- erally, there will occur displacement of the mutation when plastic zone is penetrated with further reducing the material strength, and only at this moment the real instability will happen.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第A02期1610-1613,共4页
Chinese Journal of Underground Space and Engineering
关键词
滑坡
稳定性
滑动面
landfill, stability, sliding surface
