The Influence of Slope Shape on Slope Seismic Stability

Zhang, Zhaopeng; Bo, Jingshan; Qiao, Feng

doi:10.2991/ammsa-18.2018.62

Cited by 2 publications

(4 citation statements)

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“…Nevertheless, the effects of pore water pressure and soil saturation may have exacerbated the displacement performance. In addition, different from this study, these previous studies all take homogeneous slopes as the research object and do not consider the case of nonhomogeneous slopes [9,18,20,30]. Moreover, the convex slope and concave slope have fixed curvatures, and the influence of the change in curvature on the slope stability is not discussed.…”

Section: Comparison With Previousmentioning

confidence: 89%

“…On the other hand, the damage of slopes under seismic action is also closely related to the profile shape [30]. Under the same amplitude, the stability of the slopes with different profile shapes is ordered as follows: from high to low: interior polyline-shaped slope, concave slope, linear slope, exterior polyline-shaped slope, and convex slope [9].…”

Section: Comparison With Previousmentioning

confidence: 99%

“…Slope shape can be divided into plan shape and profile shape. Affected by natural action or human disturbance, it often presents convex, concave, and linear shapes [9] (see Figure 1). ere are significant differences in slope stability among different slope shapes [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Study on the Influence of Profile Shape on the Stability of a Nonhomogeneous Slope

Yang

Shang

Liu

et al. 2021

Advances in Civil Engineering

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To study the influence of profile shape on the stability of nonhomogeneous slopes, strip mechanical models of slopes with different profile shapes were established following the simplified Bishop method. Three hundred and seventy slope models with different profile shapes and strata sequences were simulated and analyzed with FLAC3D. The results show that slopes with weaker-to-stronger (WtS) strata sequences are, in most cases, more stable than slopes with stronger-to-weaker (StW) strata sequences when all other conditions are the same. Slopes with linear shapes are the most stable. With increasing arch height, the stability of convex slopes decreases, and the stability of concave slopes first increases slightly and then decreases. When the strata sequences are WtS, the factors of safety (FoSs) of slopes with convex and exterior polyline shapes decrease more slowly. However, when the strata sequences are StW, the FoSs of slopes with concave and interior polyline shapes decrease more slowly. The greatest X-displacements are concentrated in the steeper areas of the slopes. For different strata sequences, the higher the rock strength at the steeper position is, the more stable the slope is, and the opposite trend is also observed. For the same strata sequence, the stability of a polyline-shaped slope is always better than that of a curved slope with the same inflection point.

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Section: Comparison With Previousmentioning

confidence: 89%

Section: Comparison With Previousmentioning

confidence: 99%

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Numerical Study on the Influence of Profile Shape on the Stability of a Nonhomogeneous Slope

Yang

Shang

Liu

et al. 2021

Advances in Civil Engineering

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“…Zhang et al [8] also adopted the 3D bull horn failure model to analyze the stability of the 3D slope under earthquake. Zhang et al [9] evaluated the seismic stability of slope. Xu et al [10] deduced the expressions of the stability coefficient of reinforcement under three reinforcement modes.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Stability Analysis and Numerical Simulation of Slope Failure Under Seismic Loading

Li¹,

Chen²

2022

Advances in Transdisciplinary Engineering

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The frequent earthquake disasters in mountainous areas in recent years have brought great challenges to the slope safety. According to the upper bound theorem, strength reduction method and quasi-static method, a 3D failure model under earthquake is established to study the slope safety. The expression of slope safety factor is derived and the solution is optimized. Each parameter’s influence on safety factor is analyzed. And the potential fracture surface under different working conditions was analyzed by using the numerical software 3DEC 5.20. The results indicate that it decreases with the increase of slope angle, horizontal seismic force, soil unit density, slope height, and aspect ratio, and increases with the increase of cohesion and friction angle between soil masses. The potential fracture surface increases with the raise of horizontal seismic force, friction angle, cohesion and aspect ratio, and decreases with the decline of soil unit weight and slope angle. The influence of vertical seismic force on safety factor and potential fracture surface is very small and can be almost ignored.

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The Influence of Slope Shape on Slope Seismic Stability

Cited by 2 publications

References 0 publications

Numerical Study on the Influence of Profile Shape on the Stability of a Nonhomogeneous Slope

Numerical Study on the Influence of Profile Shape on the Stability of a Nonhomogeneous Slope

Three-Dimensional Stability Analysis and Numerical Simulation of Slope Failure Under Seismic Loading

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