Slope-Stability Assessments Using Finite-Element Limit-Analysis Methods

被引:43
作者
Lim, K. [1 ]
Li, A. J. [1 ]
Schmid, A. [1 ]
Lyamin, A. V. [2 ]
机构
[1] Deakin Univ, Sch Engn, Pigdons Rd, Geelong, Vic 3217, Australia
[2] Univ Newcastle, Ctr Geotech & Mat Modelling, Callaghan, NSW 2308, Australia
关键词
Limit-equilibrium methods; Back-analysis; Rock slope; Factor of safety; Landslides; CHI-CHI EARTHQUAKE; STRENGTH INDEX GSI; BEARING CAPACITY; CHARTS; LANDSLIDE; EQUILIBRIUM; CRITERION;
D O I
10.1061/(ASCE)GM.1943-5622.0000715
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
This paper utilizes finite-element limit-analysis methods to investigate the stability of slopes of various properties and in nature. Specifically, a slope with a soft (weak material) band, a postquake slope, and rock slopes were investigated. The conventional Mohr-Coulomb failure criterion and the Hoek-Brown failure criterion are utilized for soil and rock slopes, respectively. The Hoek-Brown failure criterion can be applied directly in the finite-element limit-analysis methods without the need for conversion to the equivalent Mohr-Coulomb parameters. The applicability of the numerical limit-analysis methods in both soil and rock slopes is clearly demonstrated. It is also significant to note that the results presented in this paper have two distinct solutions: the upper- and lower-bound solutions. In addition, the failure mechanisms of the slopes are also shown. Prior assumptions of the failure mechanisms are not required for these finite-element limit-analysis methods, therefore providing a more realistic understanding of slope failures.
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页数:8
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