Geotechnical stability analysis
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In this paper, the authors describe recent advances in stability analysis that combine the limit theorems of classical plasticity with finite elements to give rigorous upper and lower bounds on the failure load.Abstract:
This paper describes recent advances in stability analysis that combine the limit theorems of classical plasticity with finite elements to give rigorous upper and lower bounds on the failure load. These methods, known as finite-element limit analysis, do not require assumptions to be made about the mode of failure, and use only simple strength parameters that are familiar to geotechnical engineers. The bounding properties of the solutions are invaluable in practice, and enable accurate limit loads to be obtained through the use of an exact error estimate and automatic adaptive meshing procedures. The methods are very general, and can deal with heterogeneous soil profiles, anisotropic strength characteristics, fissured soils, discontinuities, complicated boundary conditions, and complex loading in both two and three dimensions. A new development, which incorporates pore water pressures in finite-element limit analysis, is also described. Following a brief outline of the new techniques, stability solutions ...read more
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Slope stability analyses considering non‐associated plasticity: Application to boundary value problem
Journal ArticleDOI
Application assessment of hybrid smoothed finite element method for geotechnical deformation and stability analysis
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Stability evaluation of elliptical tunnels in natural clays by integrating FELA and ANN
TL;DR: In this paper , the stability of the elliptical tunnel with varying elliptical shape (width-depth ratio: B/D) placed at different embedment depths in clay with different anisotropy (anisotropic strength ratio: re) and varying dimensionless overburden factor (overburden factors: γD/suc) was evaluated using finite element limit analysis and the AUS model.
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Undrained Stability Analysis of Shallow Tunnel and Sinkhole in Soft Clay: The Cavity Contraction Method
Hui Qi,Wenjie Cui,Huaijian Li,Junwei Cheng,Lingdi Kong,Xiaonan Wang,Jianliang Zhang,Gongzeng Yang,Hongya Yue,Xiuguang Song +9 more
TL;DR: In this paper, the authors present theoretical methods for the undrained stability analysis of shallow tunnels/sinkholes in clay based on the cavity contraction theory, with some assumptions and simplifications.
References
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