Finite element analyses of slope stability problems using non-associated plasticity

Oberhollenzer, Simon; Tschuchnigg, Franz; Schweiger, Helmut

doi:10.1016/j.jrmge.2018.09.002

Cited by 59 publications

(21 citation statements)

References 11 publications

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“…It has been verified by Lian et al [16] that the SSR FE method can be widely applied in the engineering practice. In addition, Cheng et al [4], Goh and Zhang [9], Ishii et al [12], Zhang and Goh [30], Tschuchnigg et al [24], Oberhollenzer et al [21], Gao et al [6], Schneider-Muntau et al [23], Dyson and Tolooiyan [5] have also demonstrated that the SSR technique performs well in the many slope cases analysed.…”

Section: Numerical Modelingmentioning

confidence: 93%

System reliability assessment on deep braced excavation adjacent to an existing upper slope in mountainous terrain: a case study

2019

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Due to rapid urbanization, the land resources available for construction are becoming increasingly scarce in many builtup environments, especially for infrastructure development in mountainous terrain. For deep excavations developed for basements of high-rise buildings in cities with mountainous terrains, the excavation activities may have an influence on the stability or performance of existing nearby upper slopes. Based on a case study in Chongqing, this paper numerically investigates the effects of the excavation geometry, the retaining wall system stiffness and the distance between the excavation and slope on the performances including the global factor of safety and retaining wall deflection of the excavation-slope system. Subsequently, simplified ultimate and serviceability limit state response surface models have been developed and implemented into the First-Order Reliability Method to determine the probability that the ultimate or serviceability limit state is exceeded by performing probabilistic analysis on the global factor of safety through setting the threshold maximum wall deflection as an optimization constraint.

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Section: Numerical Modelingmentioning

confidence: 93%

System reliability assessment on deep braced excavation adjacent to an existing upper slope in mountainous terrain: a case study

2019

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“…Because the Mohr-Coulomb strength criterion is simple and practical and the strength parameters of soil are easily measured, this criterion is widely applied in soil mechanics and plasticity theory. At present, many traditional analytical methods, such as slippery line theory, ultimate bearing calculation theory, Earth pressure calculation theory, and structural strength theory, are based on this criterion; its frequent use in practical applications has resulted in the accumulation of experimental data [31][32][33].…”

Section: Slope Instability Analysesmentioning

confidence: 99%

Instability Analysis of a Low‐Angle Low‐Expansive Soil Slope under Seasonal Wet‐Dry Cycles and River‐Level Variations

Wang

Yuan

2020

Advances in Civil Engineering

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There were a small amount of obvious offsets at the bearing of bridge piers built on an artificial gentle canal bank terrace and many tensile cracks visible at the surface of the mortar block stones covering the terrace soil in several years following construction. To determine these reasons, a comprehensive site investigation and a wide variety of tests were implemented, which included geophysical tests, in situ tests, laboratory tests, pile integrity detection, and numerical analysis with the finite element method (FEM). The results revealed that the soil of the low-angle slope was the potentially low-expansive clay soil. The reduction in soil shear strength deriving from seasonal wet-dry cycles and river-level variations led to the instability and failure of the low-angle low-expansive soil slope, which triggered the collapses of the soil slope and lots of fractures in the piles of the bridge foundation. The typical characteristics of the instability and failure of the low-angle low-expansive soil slope were tractional detachment and slow sliding.

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“…In the aspect of slope stability analysis, a lot of literatures have been reported different approaches to study it [9][10][11][12][13][14][15]. However, it is essentially different that mechanical properties and geological structure patterns under the situations of soil and rock slope.…”

Section: Traditional Approaches In Slope Stability Analysismentioning

confidence: 99%

An integrated approach for jointed rock slope stability analysis using stochastic discrete fractures: A case study in mountains area

et al. 2019

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Stochastic discrete fractures are ubiquitous in practicing engineering and contribute much to the stability for geological mediums. In contrast to the traditional treatments based on continuum mechanics, we propose an integrated approach using discrete fractures based on an improved hybrid finite element method (FEM). A typical jointed rock slop is selected as a case study and then was simulated in the light of geological conditions for the study site. The basic equations of fracture domains are derived to generate stochastic discrete fractures which render a fundamental to the model. To implement this procedure through computer program, discrete fractures generating algorithm was developed. In the aspect of discretization, we presented a meshing scheme and proposed an algorithm to create fracture elements. To evaluate rock slope stability in a quantitative way, safety factor is calculated by strength reduction method. Numerical simulations were carried out showing the mechanical behaviors of jointed rock slope under different boundary conditions.

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Finite element analyses of slope stability problems using non-associated plasticity

Cited by 59 publications

References 11 publications

System reliability assessment on deep braced excavation adjacent to an existing upper slope in mountainous terrain: a case study

System reliability assessment on deep braced excavation adjacent to an existing upper slope in mountainous terrain: a case study

Instability Analysis of a Low‐Angle Low‐Expansive Soil Slope under Seasonal Wet‐Dry Cycles and River‐Level Variations

An integrated approach for jointed rock slope stability analysis using stochastic discrete fractures: A case study in mountains area

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