Generalised framework of limit equilibrium methods for slope stability analysis

Zhu, Da; Lee, C. F.; Jiang, H. D.

doi:10.1680/geot.2003.53.4.377

Cited by 102 publications

(28 citation statements)

References 14 publications

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“…These reinforced slopes have to be analyzed for stability and their reinforcement methods. The stability analysis of reinforced slopes has been carried out by the traditional limit equilibrium approach by many researchers [1][2][3][4]. These limit equilibrium methods also known as the 'method of slices' is based on the concept of dividing the failure mass into slices, with certain assumptions on the interslice force distribution, for calculating the factor of safety.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Nailed Soil Slope Using Limit Equilibrium and Finite Element Methods

Rawat

Gupta

2016

Int. J. of Geosynth. and Ground Eng.

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This paper aims at the two most common methods used for slope stability analysis. An attempt has been made to bring out the differences in results of reinforced slope stability analysis obtained from SLOPE/W (limit equilibrium based) and PLAXIS 2D (finite element based). The analysis is carried out on two slope angles of 45°and 60°, which are reinforced with nails at three different inclinations of 0°, 15°and 30°respectively. Both the slope angles and all nail inclinations are taken from the horizontal. A comparative study on stability parameters such as factor of safety, critical slip surfaces and nail forces has been carried out. The limit equilibrium method is found to yield higher values of factor of safety in comparison to finite element method. The failure surfaces from both methods are found to vary significantly. Large nail forces are observed by limit equilibrium method for 45°slope with all nail inclinations, whereas for 60°slope angle, finite element method shows an increase in the nail forces. The effect of other parameters like bond length in limit equilibrium, soil-nail interaction and bending stiffness in finite element are also studied.

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Section: Introductionmentioning

confidence: 99%

Analysis of a Nailed Soil Slope Using Limit Equilibrium and Finite Element Methods

Rawat

Gupta

2016

Int. J. of Geosynth. and Ground Eng.

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“…Similar to Borselli et al (2011), we applied Janbu's rigorous method (Janbu 1973) and generalized computational and searching strategies to find the sliding surface with the minimum stability factor (Fs) (Siegel et al 1981;Chen 1992;Zhu et al 2003Zhu et al , 2005. We performed the analysis using the same DTM as used for the deficit/surplus analysis.…”

Section: Slope Stability Assessment By Computation Methodsmentioning

confidence: 99%

Flank instability assessment at Kick-’em-Jenny submarine volcano (Grenada, Lesser Antilles): a multidisciplinary approach using experiments and modeling

et al. 2016

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Kick-'em-Jenny (KeJ)-located ca. 8 km north of the island of Grenada-is the only active submarine volcano of the Lesser Antilles Volcanic Arc. Previous investigations of KeJ revealed that it lies within a collapse scar inherited from a past flank instability episode. To assess the likelihood of future collapse, we employ here a combined laboratory and modeling approach. Lavas collected using a remotely operated vehicle (ROV) provided samples to perform the first rock physical property measurements for the materials comprising the KeJ edifice. Uniaxial and triaxial deformation experiments showed that the dominant failure mode within the edifice host rock is brittle. Edifice fractures (such as those at Champagne Vent) will therefore assist the outgassing of the nearby magma-filled conduit, favoring effusive behavior. These laboratory data were then used as input parameters in models of slope stability. First, relative slope stability analysis revealed that the SW to N sector of the volcano displays a deficit of mass/volume with respect to a volcanoid (ideal 3D surface). Slope stability analysis using a limit equilibrium method (LEM) showed that KeJ is currently stable, since all values of stability factor or factor of safety (Fs) are greater than unity.The lowest values of Fs were found for the SW-NW sector of the volcano (the sector displaying a mass/volume deficit). Although currently stable, KeJ may become unstable in the future. Instability (severe reductions in Fs) could result, for example, from overpressurization due to the growth of a cryptodome. Our modeling has shown that instabilityinduced flank collapse will most likely initiate from the SW-NW sector of KeJ, therefore mobilizing a volume of at least ca. 0.7 km 3 . The mobilization of ca. 0.7 km 3 of material is certainly capable of generating a tsunami that poses a significant hazard to the southern islands of the West Indies.

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“…The second is methods of analysis which employ non-circular slip surfaces include: Morgenstern and Price [11]; Spencer [12]; and Sarma [13]; Janbu [14] and others. The slice methods have some common features and Zhu, et al [15] have summarized them as follows:…”

Section: Limit Equilibrium Methodsmentioning

confidence: 99%

Analyzing of Slope Stability by Difference Model of Behavior

Abderrahmane

Berga

2016

Asian Engineering Review

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Landslides are triggered around the world in different conditions, always are spectacular and often dramatic. The assessment and analysis of this problem is a very important act as risk prevention in geotechnical engineering. Many developments in geotechnical engineering research about applications, theory and practice to assess slope stability. All these improve the understanding of phenomena in realty. The researches of behavior of soils are also in development. There are numerous models of behavior of soils, from the elastic-plastic model to more sophisticated behavior models describing almost all aspects of elastic-visco-plastic behavior of soils. These models have been developed in order to be integrated into software. This article deals with the slope stability analysis, by the technique of shear strength reduction (SSR) coupled to the finite element method. Three criterions are used, the first is the Mohr-Coulomb failure criterion, and the second is the Hoek-Brown, the third is Drucker-Prager criterion. The factors of safety and the slide surfaces of this slope are analyzed by these criterions then compared and discussed. By making the comparative study, that can be captured and understood for appropriate use in engineering applications.

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Generalised framework of limit equilibrium methods for slope stability analysis

Cited by 102 publications

References 14 publications

Analysis of a Nailed Soil Slope Using Limit Equilibrium and Finite Element Methods

Analysis of a Nailed Soil Slope Using Limit Equilibrium and Finite Element Methods

Flank instability assessment at Kick-’em-Jenny submarine volcano (Grenada, Lesser Antilles): a multidisciplinary approach using experiments and modeling

Analyzing of Slope Stability by Difference Model of Behavior

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