Upper bound analysis of slope stability with nonlinear failure criterion based on strength reduction technique

2010 ◽  
Vol 17 (4) ◽  
pp. 836-844 ◽  
Author(s):  
Lian-heng Zhao ◽  
Liang Li ◽  
Feng Yang ◽  
Qiang Luo ◽  
Xiang Liu
Keyword(s):  
Slope Stability ◽  
Upper Bound ◽  
Failure Criterion ◽  
Strength Reduction ◽  
Reduction Technique ◽  
Nonlinear Failure Criterion ◽  
Upper Bound Analysis ◽  
Strength Reduction Technique ◽  
Bound Analysis

scholarly journals Upper Bound Solution of Safety Factor for Shallow Tunnels Face Using a Nonlinear Failure Criterion and Shear Strength Reduction Technique

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Fu Huang ◽  
Zai-lan Li ◽  
Tong-hua Ling
Keyword(s):  
Safety Factor ◽  
Upper Bound ◽  
Reduction Technique ◽  
Nonlinear Failure Criterion ◽  
Upper Bound Theorem ◽  
Tunnel Face ◽  
Bound Solution ◽  
Strength Reduction Technique ◽  
Bound Theorem ◽  
The Stability

A method to evaluate the stability of tunnel face is proposed in the framework of upper bound theorem. The safety factor which is widely applied in slope stability analysis is introduced to estimate the stability of tunnel face using the upper bound theorem of limit analysis in conjunction with a strength reduction technique. Considering almost all geomaterials following a nonlinear failure criterion, a generalized tangential technique is used to calculate the external work and internal energy dissipation in the kinematically admissible velocity field. The upper bound solution of safety factor is obtained by optimization calculation. To evaluate the validity of the method proposed in this paper, the safety factor is compared with those calculated by limit equilibrium method. The comparison shows the solutions derived from these two methods match each other well, which shows the method proposed in this paper can be considered as effective.

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