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Nhan đề: A Comparison Of Finite Element Slope Stability Analysis With Conventional Limit-Equilibrium Investigation
Tác giả: Hammah, Reginald
Yacoub, Thamer
Corkum, Brent
Curran, John
Từ khoá: Finite element method
shear strength
Năm xuất bản: 2005
Tóm tắt: In the assessment of slopes, factor of safety values still remain the primary indexes for determining how close or far slopes are from failure. Traditional limit-equilibrium techniques are the most commonly-used analysis methods. Recently, however, the significant computing and memory resources typically available to the geotechnical engineer, combined with low costs, have made the Finite Element Method (FEM) a powerful, viable alternative. The Shear Strength Reduction (SSR) technique enables the FEM to calculate factors of safety for slopes. The method enjoys several advantages including the ability to predict stresses and deformations of support elements, such as piles, anchors and geotextiles, at failure. Despite the SSR finite element technique’s many benefits, it has not received widespread adoption among geotechnical engineers for routine slope stability analysis. This could be probably due to the very limited experience engineers have had with the tool for slope stability analysis, and limited published information on the quality/accuracy of its results. To help change this situation this paper will compare the method’s performance to those of the most widely used limitequilibrium methods on a broad range of slope cases. The SSR’s performance will be tested on about 30 slope examples, which have been reported in literature and have been used by software developers to verify the results of traditional slope stability programs.
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