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Full and Quasi-Stochastic Slope Stability Analyses Using Random Limit Equilibrium Method (RLEM)
Natural alluvial deposits exhibit variability in strength and stiffness parameters which results in uncertainty in the response of geotechnical structures such as slopes. Random limit equilibrium method (RLEM) offers a conceptually simple, versatile, and efficient approach for the evaluation of the stability conditions of heterogeneous slopes. Limit equilibrium methods (LEM) using non-circular slip geometries have proven more accurate than circular slip geometries in profiling the failure status of heterogeneous slopes by passing through the weak points more effectively. Findings of the current study support the non-circular RLEM approach over the conventional circular slice-based formulations. It is also shown that adopting a very simple and computationally efficient quasi-stochastic RLEM approach, which is based on the block search method, will render fairly accurate predictions of the stability conditions of nonhomogeneous slopes in comparison to the inaccurate 1D approach. Furthermore, it is shown that considering correlation in the shear strength parameters is very important when evaluating the stability of heterogeneous slopes.
Full and Quasi-Stochastic Slope Stability Analyses Using Random Limit Equilibrium Method (RLEM)
Natural alluvial deposits exhibit variability in strength and stiffness parameters which results in uncertainty in the response of geotechnical structures such as slopes. Random limit equilibrium method (RLEM) offers a conceptually simple, versatile, and efficient approach for the evaluation of the stability conditions of heterogeneous slopes. Limit equilibrium methods (LEM) using non-circular slip geometries have proven more accurate than circular slip geometries in profiling the failure status of heterogeneous slopes by passing through the weak points more effectively. Findings of the current study support the non-circular RLEM approach over the conventional circular slice-based formulations. It is also shown that adopting a very simple and computationally efficient quasi-stochastic RLEM approach, which is based on the block search method, will render fairly accurate predictions of the stability conditions of nonhomogeneous slopes in comparison to the inaccurate 1D approach. Furthermore, it is shown that considering correlation in the shear strength parameters is very important when evaluating the stability of heterogeneous slopes.
Full and Quasi-Stochastic Slope Stability Analyses Using Random Limit Equilibrium Method (RLEM)
Izadi, Ardavan (author) / Chenari, Reza Jamshidi (author) / Cami, Brigid (author) / Javankhoshdel, Sina (author)
Geo-Congress 2020 ; 2020 ; Minneapolis, Minnesota
Geo-Congress 2020 ; 667-676
2020-02-21
Conference paper
Electronic Resource
English
Full and Quasi-Stochastic Slope Stability Analyses Using Random Limit Equilibrium Method (RLEM)
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