TY - JOUR
T1 - Locating global critical slip surface using the morgenstern-price method and optimization technique
AU - Bai, Tao
AU - Qiu, Tong
AU - Huang Prof., Xiaoming
AU - Li, Chang
PY - 2014
Y1 - 2014
N2 - This paper presents a method to locate the global critical slip surface for slope profiles with complex geology. In this method, a readily available concise algorithm based on the Morgenstern-Price method is used to efficiently calculate the factor of safety for a slip surface. This algorithm is combined with an optimization technique to search for global critical slip surfaces based on a set of random initial slip surfaces. The proposed method is applied to analyze three example problems involving slope profiles with various degrees of complexity. This study indicates that the proposed global search strategy can locate the global critical slip surface regardless of the initial slip surface for slope profiles with low to moderate complexity. For more complex geologic slope profiles, however, the proposed search strategy may only be able to identify locally critical slip surfaces depending on the initial slip surface. To ensure that the global critical slip surfaces are identified, more random initial slip surfaces need to be considered. A sound engineering judgment may be combined with the global search algorithmpresented in this study to locate global critical slip surfaces more efficiently.
AB - This paper presents a method to locate the global critical slip surface for slope profiles with complex geology. In this method, a readily available concise algorithm based on the Morgenstern-Price method is used to efficiently calculate the factor of safety for a slip surface. This algorithm is combined with an optimization technique to search for global critical slip surfaces based on a set of random initial slip surfaces. The proposed method is applied to analyze three example problems involving slope profiles with various degrees of complexity. This study indicates that the proposed global search strategy can locate the global critical slip surface regardless of the initial slip surface for slope profiles with low to moderate complexity. For more complex geologic slope profiles, however, the proposed search strategy may only be able to identify locally critical slip surfaces depending on the initial slip surface. To ensure that the global critical slip surfaces are identified, more random initial slip surfaces need to be considered. A sound engineering judgment may be combined with the global search algorithmpresented in this study to locate global critical slip surfaces more efficiently.
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U2 - 10.1061/(ASCE)GM.1943-5622.0000312
DO - 10.1061/(ASCE)GM.1943-5622.0000312
M3 - Article
AN - SCOPUS:84896138969
SN - 1532-3641
VL - 14
SP - 319
EP - 325
JO - International Journal of Geomechanics
JF - International Journal of Geomechanics
IS - 2
ER -