Slope Stability Analysis of Jiu-Fen Using Finite Element Method and Limit Equilibrium Method

2012 ◽  
Vol 170-173 ◽  
pp. 1064-1067
Author(s):  
Shong Loong Chen ◽  
Chun Fu Lin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Slope Stability ◽  
Displacement Vector ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
The Finite Element Method ◽  
Safety Factors ◽  
Equilibrium Method ◽  
Element Method

This study simulates the slope stability at Jiu-Fen, using the limit equilibrium method and the finite element method. The limit equilibrium method can find potential slide surfaces and safety factors rapidly. The advantage of the finite element method is that it utilizes more reasonable soil behavior and boundary conditions. A critical slide surface obtained by the limit equilibrium method can be compared with the displacement vector, stress field and location of plastic zone obtained by the finite element method. Furthermore, we can compare the safety factors produced by the two methods. This study shows that the safety factor from the limit equilibrium method is higher than that from the finite element method. The displacement analysis by the finite element method agrees well with the progressive slope failure. So, if we combine the two methods using monitored data in the field, we can analyze slope stability clearly.

Stability and Seismic Behavior of Landslide with Deep Overburden Layer in Kala Hydropower Station, China

2012 ◽  
Vol 594-597 ◽  
pp. 148-154
Author(s):  
Zhuo Li ◽  
Jiang Da He ◽  
Hong Qiang Xie ◽  
Hua Lin Yang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Safety Factors ◽  
Dynamic Finite Element ◽  
Equilibrium Method ◽  
Landslide Mass ◽  
The Stability ◽  
Element Method

Landslide induced by earthquakes is one of serious seismic secondary disasters. For some large-scale landslide as discussed in the study, both rigid limit equilibrium method and dynamic finite element method are applied to comparatively analyze the stability against sliding under typical working conditions, and to reveal dynamic response characteristics. Results show that rainfall and earthquake have significant influences on the stability of landslide mass, and the safety factors under rainfall and seismic conditions do not satisfy relevant specifications. The similar results are obtained by dynamic finite element method, but the safety factors are larger than that of rigid limit equilibrium method. The landslide belongs to thrust load caused landslide, featuring upper tension damage and lower shear damage. Some measures, such as cutting slope and reducing load, shear tunnel, anchor tunnel, are recommended to reinforce the landslide mass.

Application Study on the Stability of Xiufengsi Landslide by Using Limit Equilibrium Method and Finite Element Method

2013 ◽  
Vol 671-674 ◽  
pp. 180-185
Author(s):  
Qing Wang ◽  
Lei Hua Yao ◽  
Ning Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Application Study ◽  
Equilibrium Method ◽  
The Stability ◽  
Comparison Of The Results ◽  
Residential Quarters ◽  
Element Method

Xiufengsi Landslide is an ancient landslide in Wushan County, Chongqing, China. Under natural condition, this landslide is stable. Due to the Three Gorges Reservoir, however, the water level in this region fluctuates within the range of [145 m, 175 m], periodically. Furthermore, an increasing number of residential quarters have been built on this landslide that also increase the possibility of occurrences of the landslide. Motivated by the government’s desire to take measures in control the landslide, we use two approaches to study the stability of this landslide. Under different computational conditions, the safety factors of the landslide are calculated by using limit equilibrium method and finite element method, respectively. Based on the comparison of the results, the stability of the landslide is analyzed more objectively and comprehensively. This work also lends insight into the landslide forecast.

Landslide Stability Analysis Based on GeoStudio

2013 ◽  
Vol 634-638 ◽  
pp. 3701-3704 ◽  
Author(s):  
Rui Wang ◽  
Xi Wang ◽  
Kun Yin ◽  
Yang Zhao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stability Analysis ◽  
Slip Surface ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Sliding Surface ◽  
Landslide Stability ◽  
Equilibrium Method ◽  
Element Method

In order to monitor landslide risk, GeoStudio software is frequently applied to landslide stability analysis. In this paper, Juting landslide in Shanxi was subjected by GeoStudio software, while limit equilibrium method was adopted to calculate the landslide stability in the slip surface. The solutions of stress and displacement vector were gotten through SIGMA / W module on the landslide for finite element method in sliding surface stress analysis. And it was also used to import the results obtained in SIGMA / W module into SLOPE / W module to calculate safety factor and the potential sliding surface. The result shows that the calculated safety factors which are worked out by those two ways are close to each other, and limit equilibrium method can be used in landslide stability analysis, but the finite element method is more consistent with the actual situation. GeoStudio software can calculate landslide stability coefficient conveniently, and can express potential slip surface intuitively, providing reliable foundation for landslide stability analysis.

Finite Element Models for Flexible Cosserat Solids

2020 ◽  
Author(s):  
Olivier A. Bauchau ◽  
Minghe Shan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Displacement Vector ◽  
Equations Of Motion ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Discrete Equations ◽  
Computation Efficiency ◽  
Elasticity Problems ◽  
Element Method

Abstract The application of the finite element method to the modeling of Cosserat solids is investigated in detail. In two- and three-dimensional elasticity problems, the nodal unknowns are the components of the displacement vector, which form a linear field. In contrast, when dealing with Cosserat solids, the nodal unknowns form the special Euclidean group SE(3), a nonlinear manifold. This observation has numerous implications on the implementation of the finite element method and raises numerous questions: (1) What is the most suitable representation of this nonlinear manifold? (2) How is it interpolated over one element? (3) How is the associated strain field interpolated? (4) What is the most efficient way to obtain the discrete equations of motion? All these questions are, of course intertwined. This paper shows that reliable schemes are available for the interpolation of the motion and curvature fields. The interpolated fields depend on relative nodal motions only, and hence, are both objective and tensorial. Because these schemes depend on relative nodal motions only, only local parameterization is required, thereby avoiding the occurrence of singularities. For Cosserat solids, it is preferable to perform the discretization operation first, followed by the variation operation. This approach leads to considerable computation efficiency and simplicity.

Stability Analysis of Soil Slope and the Design of Anti-Slide Piles during Unsteady Seepage

2012 ◽  
Vol 204-208 ◽  
pp. 689-693
Author(s):  
Yong Quan Li ◽  
Hang Jing ◽  
Qing Huan Wang ◽  
Jun Fu Chen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Engineering Practice ◽  
Soil Slope ◽  
Safety Factors ◽  
Seepage Analysis ◽  
Slip Surfaces ◽  
Earth Pressures

Principle of calculation of water and earth pressures together by Limit Equilibrium Method (LEM) is introduced, and coupled deformation and seepage analysis is conducted by Finite Element Method (FEM ).The response of one soil slope is simulated during rapid drawdown of water level by LEM and FEM. The results calculated show that seepage upraises the critical slip surfaces, and critical slip surfaces and safety factors by two ways are pretty close. To assure the safety of the slope, the design of anti-slide piles is carried out. Those ways used may provide reference to engineering practice.

Sign in / Sign up

Export Citation Format

Share Document