Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9667
Title: Location of critical three-dimensional non-spherical failure surface by NURBS functions and ellipsoid with applications to highway slopes
Authors: Cheng, YM 
Liu, HT
Wei, WB
Au, SK
Keywords: Limit equilibrium
NURBS surface
Slope
Stability analysis
Issue Date: 2005
Publisher: Elsevier
Source: Computers and geotechnics, 2005, v. 32, no. 6, p. 387-399 How to cite?
Journal: Computers and geotechnics 
Abstract: At present, location of critical three-dimensional failure surfaces is mainly limited to spherical shape due to the various difficulties in performing global optimization for general non-spherical failure surface. Non-spherical failure surface is however the most general and critical shape that should be considered in slope stability analysis. This paper introduces a practical way in using NURBS surface and ellipsoidal surface to simulate a three-dimensional sliding surface. Numerical examples have indicated that the present proposal is effective in application and the critical failure surfaces as determined for 2 specially designed problems are also reasonable. The authors have also applied the optimization search to a curved highway slope and have obtained the relation between curvature of slope and the minimum factors of safety of slope.
URI: http://hdl.handle.net/10397/9667
ISSN: 0266-352X
DOI: 10.1016/j.compgeo.2005.07.004
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