Three-dimensional stability analysis of seismically induced landslides using the displacement-based rigorous limit equilibrium method

2019 ◽  
Vol 78 (7) ◽  
pp. 4743-4756 ◽  
Author(s):  
Xiaoping Zhou ◽  
Hao Cheng ◽  
Louis Ngai Yuen Wong
Keyword(s):  
Stability Analysis ◽  
Dimensional Stability ◽  
Limit Equilibrium ◽  
Three Dimensional ◽  
Limit Equilibrium Method ◽  
Equilibrium Method ◽  
Seismically Induced Landslides ◽  
Displacement Based

A novel displacement-based rigorous limit equilibrium method for three-dimensional landslide stability analysis

2015 ◽  
Vol 52 (12) ◽  
pp. 2055-2066 ◽  
Author(s):  
Hao Cheng ◽  
Xiaoping Zhou
Keyword(s):  
Stability Analysis ◽  
Limit Equilibrium ◽  
Three Dimensional ◽  
Vertical Displacement ◽  
Limit Equilibrium Method ◽  
Reduction Factor ◽  
Shear Stresses ◽  
Equilibrium Method ◽  
Displacement Based ◽  
The Relationship

Conventional stability analysis of landslides is investigated using the factor of safety of the entire sliding body, which provides no information concerning displacements of the analyzed landslides. In this paper, a novel displacement-based rigorous limit equilibrium method is proposed to investigate the displacements and stabilities of three-dimensional landslides. The relationship between the shear stresses acting on the base of the columns and the shear displacements is established based on the hyperbolic soil model, which can be directly obtained from direct shear tests. According to the displacement compatibility among the columns, the shear displacements of all columns can be determined by the vertical and horizontal displacements at a key point. Combining the six equilibrium conditions of the discretized columns with the nonlinear constitutive relation between stress and displacement of soils, the vertical displacement at the key point can be determined. By introducing the strength reduction technique into the displacement-based rigorous limit equilibrium method, the relationship between the reduction factor and the vertical displacement can be obtained. The displacement and the safety factor of three-dimensional landslides can be defined. Moreover, two cases are given to verify the robustness and precision of the present method in detail.

Study of the Three-Dimensional Global Limit Equilibrium Method Applied to the Stability of Rock Slope

2012 ◽  
Vol 249-250 ◽  
pp. 1099-1102
Author(s):  
Yi Sheng Huang ◽  
Jian Lin Li
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Slip Surface ◽  
Limit Equilibrium ◽  
Limit State ◽  
Three Dimensional ◽  
Limit Equilibrium Method ◽  
Equilibrium Method ◽  
The Stability ◽  
Loose Rock

Amending the normal stress over the slip surface based on the stress field by numerical analysis, applying the three-dimensional global limit equilibrium method to the stability analysis of tension-slackened rock mass in the right bank of Yagen hydropower station. Stability analysis shows that if do not take any measures, the loose rock mass stability can cater to the Specification demand, but some small sliders is in the limit state under the water and earthquake condition, if use the cutting slope and unloading scheme, the whole loose rock mass and the all small sliders can meet the Specification standard stability requirements.

Stability Analysis for Slopes of Maerdang Hydropower Station with the Three-Dimensional Limit Equilibrium Method

2013 ◽  
Vol 275-277 ◽  
pp. 1427-1430
Author(s):  
Yi Sheng Huang ◽  
Jian Lin Li
Keyword(s):  
Stability Analysis ◽  
Limit Equilibrium ◽  
Three Dimensional ◽  
Limit Equilibrium Method ◽  
Hydropower Station ◽  
Stability Of Slopes ◽  
Equilibrium Method ◽  
The Face ◽  
The Stability ◽  
The Right

Firstly analyzed the stability of blocks with block theory and secondly evaluated the stability of blocks with three-dimensional limit equilibrium method and finally evaluated the whole stability of slopes. Stability analysis for the slope of Maerdang hydropower station shows that natural slopes which belong to the upstream of Hadehei ditch on the right bank will not occur wedge slide, tailrace slopes of hydropower station have not sliding slopes searched which are in potential slide, if taking some measures to reinforce the stability of man-made slopes on the face rock-fill hub, which may meet the demand of the specification.

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