Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method

Zhang, Weijie; Ji, Jian; Gao, Yufeng; Li, Xiaoyü; Zhang, Chunshun

doi:10.1016/j.gsf.2020.02.003

Cited by 33 publications

(10 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9a). The mean value and variance of the runout distance increase notably with the increase of the COV , which is consistent with the recent random SPH studies conducted by Zhang et al (2020). For a small COV , the varying range of is correspondingly narrowed, and consequently the distribution of the runout distances will become narrower.…”

Section: Parametric Analysis On the Statistical Information Of Soil P...supporting

confidence: 89%

Uncertainty quantification of landslide runout motion considering soil interdependent anisotropy and fabric orientation

Rezania

Nezhad

et al. 2022

Landslides

View full text Add to dashboard Cite

Natural soils often exhibit an anisotropic fabric pattern as a result of soil deposition, weathering, or filling. This paper aims to investigate the effect of soil interdependent anisotropy and fabric orientation on runout motions of landslides and evaluate the most critical fabric orientation for the post-failure behavior. The shear strength properties of soil deposit (i.e., cohesion $$c$$ c and friction angle $$\varphi$$ φ ) are modeled as negatively cross correlated bivariate random fields. The results reveal that the spatial variability and the negative cross-correlation of $$c$$ c and $$\varphi$$ φ notably influence the post-failure behavior. In addition, the rotation of soil layer orientation significantly affects the runout motion. Based on the analyses, the deposition orientation of $${30}^{^\circ }$$ 30 ∘ is identified to produce the highest mean value and standard deviation of the runout distance. The findings from this study highlight the importance of considering the orientation of soil stratification, rather than only the magnitude of shear strength, in assessing the post-failure behavior of a landslide.

show abstract

Section: Parametric Analysis On the Statistical Information Of Soil P...supporting

confidence: 89%

Uncertainty quantification of landslide runout motion considering soil interdependent anisotropy and fabric orientation

Rezania

Nezhad

et al. 2022

Landslides

View full text Add to dashboard Cite

show abstract

“…From the variation of model parameters under different dynamic stress amplitudes [31][32][33], when the confining pressure is 100 kPa, it is known that the value of each parameter varies obviously with σ eq 1 − σ 3 . According to the above analysis, it can be assumed that the parameter variation laws under any dynamic pressure and different dynamic stress are consistent with 100 kPa, but the numerical values are inconsistent.…”

Section: Application Analysismentioning

confidence: 99%

Elastic‐Viscoplastic Constitutive Model of Soil under Cyclic Loading

You³

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

The creep problems are often involved in soil under cyclic loading, and its behaviors of soil under cyclic loading sparks many arguments in current research field. To propose one new model to demonstrate these creep behaviors of soil under cyclic loading, the cyclic loading was simplified equivalently, and the elastic-viscoplastic model (EVPM) for soil under cyclic loading was established based on the Bingham model. The yield criterion for soil under cyclic loading with constant amplitude was proposed following the simplified load. A constitutive equation based on the EVPM was constructed by using the flow criterion related to the yield criterion. Meanwhile, the parameters of EVPM were identified and discussed. In addition, the case analysis of the EVPM was also performed. The results indicate that the stable and destructive creep behaviors of soil under cyclic loading could be well described by the recommended EVPM, and the obtained parameters in the model exhibited a clear regularity with the increase of dynamic stress amplitude. Besides, the established model could be selected to predict the stable and destructive creep behavior of soil under cyclic loading.

show abstract

“…Similarly, the factors of safety will change because the strength parameters of the embankment soil change with the fluctuation of volumetric moisture content, and many methods [35][36][37] can be used to solve it. In this study, the factors of safety using the Bishop method [38] for the most dangerous slip surface by the SLOPE/W module are shown in Figure 13(b).…”

Section: Influence Of Capillary Barrier On the Resilient Modulus And mentioning

confidence: 99%

Moisture Migration and Control of New Embankment for Reconstruction and Expansion Project in Southern China

Zhang

Zeng

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

In hot and humid regions of southern China, the volumetric moisture content of the embankment after opening to traffic for a period of time reaches a stable state, and it is higher than the design value. When it was widened, the humidity gradient and exchange were formed due to the difference in moisture content between the existing and new embankment. To reveal the moisture migration of the existing and new embankment and control the rise of volumetric moisture content in new embankment, six frequency domain reflectometry sensors were installed in existing and new embankment to monitor the volumetric moisture content. A finite element model for the embankment was established and verified with the measured data. And seven numerical analyses of transient seepage in the new embankment of the cushion, cover, and partition using capillary barrier by sand were simulated. The results show that the volumetric moisture contents of the new embankment in southern China gradually increase and eventually reach an equilibrium state. The increase in water comes from the slope, the foundation, and the existing embankment. Early in the first 1∼2 years, the water mainly comes from the foundation and the existing embankment. After that, as time goes by, the water comes mostly from the slope infiltration and gradually migrates to the foundation and the existing embankment. Finally, the volumetric moisture content and the water storage gradually reach equilibrium. The volumetric moisture content of the new embankment using capillary barrier by sand at the cushion, the cover, and the partition is maintained as the construction volumetric moisture content. This combination is a very effective method to control the humidity stability of the new embankment in southern China.

show abstract

Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method

Cited by 33 publications

References 51 publications

Uncertainty quantification of landslide runout motion considering soil interdependent anisotropy and fabric orientation

Uncertainty quantification of landslide runout motion considering soil interdependent anisotropy and fabric orientation

Elastic‐Viscoplastic Constitutive Model of Soil under Cyclic Loading

Moisture Migration and Control of New Embankment for Reconstruction and Expansion Project in Southern China

Contact Info

Product

Resources

About