امروز سه شنبه , 20 شهریور 1403
شنبه تا پنج شنبه - 9 صبح الی 20 عصر
دانلود مقاله : Upper bound finite element analysis of slope stability using a nonlinear failure criterion 2013
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دانلود مقاله :
Upper bound finite element analysis of slope stability using a nonlinear failure criterion 2013
نویسندگان :
Xin-guang Yang , Shi-chun Chi
فرمت:pdf
چکیده :
In this study, upper bound finite element (FE) limit analysis is applied to stability problems of slopes
using a nonlinear criterion. After formulating the upper bound analysis as the dual form of a second-order
cone programming (SOCP) problem, the stress field and corresponding shear strength parameters can be
determined iteratively. Thus, the nonlinear failure criterion is represented by the shear strength parameters
associated with stress so that the analysis of slope stability using a nonlinear failure criterion can be
transformed into the traditional upper bound method with a linear Mohr–Coulomb failure criterion.
Comparison with published solutions illustrates the accuracy and feasibility of the proposed method
for a simple homogeneous slope stability problem. The proposed approach is also applied to a seismic
stability problem for a rockfill dam to study the influence of different failure criterions on the upper
bound solutions. The results show that the seismic stability coefficients obtained using two different nonlinear
failure criteria are similar but that the convergence differs significantly.
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