Incorporation of Soil Suction in Stress-Based Slope Stability Analysis

摘要：

　　A procedure is developed where stresses from a finite element analysis are incorporated into a limit equilibrium framework to evaluate the stability of unsaturated soil slopes.Based on a known seepage field and pore pressure distribution in the slope,an independent stress-deformation analysis is performed using the Barcelona Basic Model (Alonso et al,1990 1) to calculate the internal stresses in the slope.Subsequently,slip surfaces from the limit equilibrium analysis are introduced using a series of rectangle planes.The maximum and minimum principal stresses at the centre of each plane can be calculated from the internal stresses and they are introduced into the slope stability analysis depending on the stress level relative to the strength of the unsaturated soils.Finally,a parametric study is carried out to show the effect of suction on the calculated factor of safety.

作者: Yong Chen D.Chan Yunzhi Tan

作者单位: China Three Gorges University,Key Laboratory of Geological Hazards of Three Gorges Reservoir Area,Mi China Three Gorges University,Key Laboratory of Geological Hazards of Three Gorges Reservoir Area,Mi

会议类型: 国际会议

会议名称: The Second International Symposium on Constitutive Modeling of Geomaterials: Advances and New Applications (第二届国际岩土本构模型研讨会(IS-Model 2012))

会议地点: 北京

会议语种:英文

页码: 691-699

在线出版日期: 2012-10-15（万方平台首次上网日期，不代表论文的发表时间）