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Simplified method for three-dimensional slope stability analysis based on rigorous limit equilibrium
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DOI：10.1002/nag.3486.png)
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A simplified procedure is presented for calculating the factor of safety of a slope with a 3-D slip surface, which satisfies all the six equilibrium conditions for the 3-D sliding body. By assuming an initial normal stress distribution on the 3-D slip surface which is then modified by a polynomial function involving five correcting parameters, the six equilibrium equations are established with a prescribed value of factor of safety, which is linear with the five correcting parameters as well as the horizontal seismic coefficient K-c. An iterative procedure is proposed for determining the factor of safety with a prescribed value of K-c, and ensuring that the normal stresses are positive on the whole slip surface. The method is suitable for analyzing 3-D slope stability, especially with unsymmetric 3-D shapes, and its application in practical engineering is given, which demonstrates the effectiveness of the present method.
Keyword:
factor of safety
horizontal seismic coefficient
limit equilibrium
slop stability
three-dimensional slip surface
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3.6
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3.3K
被引数:
9.6K
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ENGINEERING GEOLOGY
ENGINEERING GEOLOGYIF8.4
PREAI
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