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• W4308356324 abstract "This paper investigates the critical stability of purely cohesive soil (ϕ = 0) slopes under seismic conditions using a novel concept of the critical slope surface (CSS). A theoretical model is devised on the basis of a unified framework of the method of stress characteristics and the pseudostatic approach. In the presence of pseudostatic seismic forces, a system of differential equations governing the equilibrium stress field is combined with the Mohr–Coulomb yield criterion. Subsequently, the curvilinear CSS derived at the state of critical equilibrium with a factor of safety of 1.0 is endorsed to operate as an autoguided measure for slope stability. Unlike the traditional limit equilibrium and limit analysis methods, the present method does not involve any preordained failure mechanism in the analysis. The CSSs obtained from the present analysis mostly anticipate steeper profiles with lesser height than the traditional linear slopes reported in the literature. In addition, the curvilinear CSS exhibits a certain morphological resemblance with naturally occurring soil slopes. A finite-element simulation of the CSS further establishes the versatility of the proposed concept to design an equivalent linear profile with a prescribed height. A set of design charts based on the CSS concept is provided to mandate a quick and inexpensive stability analysis in practice.Practical ApplicationsIn slope stability analysis, the optimal inclination of a linear slope often becomes a prerequisite to ensure a sufficient margin of safety by providing a flat slope geometry compared with that required for critical stability with a factor of safety of 1.0. The present critical slope surface-based stability concept ensures critical stability at minimal computational costs. The critical slope surface appears to be a boundary between the zone of stability and instability. Hence, for site-specific soil properties and seismic conditions, flat slope profiles compared with the derived critical slope surface ensure a stable configuration and vice versa. Therefore, the guidelines for designing proposed linear slopes can be orientated in advance to prevent an imminent collapse. In the case of existing slopes, the necessity for a remedial measure to maintain critical stability can also be assessed a priori using the current concept." @default.
• W4308356324 created "2022-11-11" @default.
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• W4308356324 date "2023-01-01" @default.
• W4308356324 modified "2023-10-18" @default.
• W4308356324 title "Critical Stability Analysis of Slopes Using Stress Characteristics in Purely Cohesive Soil" @default.
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• W4308356324 doi "https://doi.org/10.1061/(asce)gm.1943-5622.0002638" @default.
• W4308356324 hasPublicationYear "2023" @default.
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