TY - JOUR
T1 - New Instability Criterion for Stability Analysis of Homogeneous Slopes with Double Strength Reduction
AU - Fang, Hongwei
AU - Chen, Yohchia Frank
AU - Xu, Guowen
AU - Hou, Zhenkun
AU - Wu, Jianxun
N1 - Funding Information:
The authors are grateful to the 13th Five-Year Science and Technology Research Project of Jilin Province Education Department (No. JJKH20180450KJ).
Publisher Copyright:
© 2020 American Society of Civil Engineers.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/9/1
Y1 - 2020/9/1
N2 - A new instability criterion based on the critical slope concept and the double strength reduction is proposed to evaluate the stability of slopes. In this method, the critical slope contour is determined by the slip-line field theory with the reduced cohesion and the internal friction angle, and the slope reaches the limit equilibrium state when it intersects with the critical slope contour at the toe of the slope. The proposed method is validated against a published case and compared with the traditional instability criterion. In addition, the calculation results regarding four slope cases revealed that the reduction ratio of soil strength derived from the proposed method is more reasonable, and the comprehensive safety factor is equal to the polar diameter method. Thus, the proposed method can be adopted to quantify the instability criterion.
AB - A new instability criterion based on the critical slope concept and the double strength reduction is proposed to evaluate the stability of slopes. In this method, the critical slope contour is determined by the slip-line field theory with the reduced cohesion and the internal friction angle, and the slope reaches the limit equilibrium state when it intersects with the critical slope contour at the toe of the slope. The proposed method is validated against a published case and compared with the traditional instability criterion. In addition, the calculation results regarding four slope cases revealed that the reduction ratio of soil strength derived from the proposed method is more reasonable, and the comprehensive safety factor is equal to the polar diameter method. Thus, the proposed method can be adopted to quantify the instability criterion.
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U2 - 10.1061/(ASCE)GM.1943-5622.0001797
DO - 10.1061/(ASCE)GM.1943-5622.0001797
M3 - Article
AN - SCOPUS:85088573032
VL - 20
JO - International Journal of Geomechanics
JF - International Journal of Geomechanics
SN - 1532-3641
IS - 9
M1 - 0001797
ER -