Volume 10, Number 2 (June 2012)                   IJCE 2012, 10(2): 112-123 | Back to browse issues page


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Askari F, Totonchi A, Farzaneh O. 3D stability analysis of convex slopes in plan view using lower bound linear finite element. IJCE. 2012; 10 (2) :112-123
URL: http://ijce.iust.ac.ir/article-1-546-en.html

Abstract:   (14951 Views)

Presented is a method of three-dimensional stability analysis of convex slopes in plan view based on the Lower-bound theorem of
the limit analysis approach. The method’s aim is to determine the factor of safety of such slopes using numerical linear finite
element and lower bound limit analysis method to produce some stability charts for three dimensional (3D) homogeneous convex
slopes. Although the conventional two and three dimension limit equilibrium method (LEM) is used more often in practice for
evaluating slope stability, the accuracy of the method is often questioned due to the underlying assumptions that it makes. The
rigorous limit analysis results in this paper together with results of other researchers were found to bracket the slope stability
number to within ±10% or better and therefore can be used to benchmark for solutions from other methods. It was found that using
a two dimensional (2D) analysis to analyze a 3D problem will leads to a significant difference in the factors of safety depending
on the slope geometries. Numerical 3D results of proposed algorithm are presented in the form of some dimensionless graphs which
can be a convenient tool to be used by practicing engineers to estimate the initial stability for excavated or man-made slopes

Full-Text [PDF 1436 kb]   (2671 Downloads)    
Type of Study: Research Paper | Subject: Soil Mechanics Classic

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