Finite-element modeling of submarine landslide triggered by seismic loading in saturated cohesive soil deposits

Yang, Ming‐Yan; Wang, Jianhua

doi:10.1007/s10064-020-02005-4

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…The earthquake's effects are not considered because of the location of the landslide area (Du et al, 2015;Mi and Wang, 2021). Rainfall is one of the fundamental reasons for the instability of unsaturated soil (Feng et al, 2013;Liu et al, 2018).…”

Section: Calculation Conditions and Parameter Selectionmentioning

confidence: 99%

Failure process and stability analysis of landslides in Southwest China while considering rainfall and supporting conditions

Gao

Zhang

et al. 2023

Front. Environ. Sci.

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Landslides frequently occur in several mountainous areas because of their unique engineering–geological conditions and other external factors (earthquakes, rainfall, etc.). In this paper, the landslide in Southwest China is used as the research objective to examine the landslide’s stability under different working conditions. The influencing factors and the formation mechanism of the landslide are analyzed based on the geological environment and essential characteristics of the landslide. In addition, the transfer coefficient method and the GeoStudio software were used to assess the landslide stability. The analysis results demonstrate that the joint action of landforms, geological structures, rainfall, and other factors caused the landslide. Furthermore, the slipped tension fracture induced the failure mode. The transfer coefficient method results showed that the landslide was stable under natural conditions and unstable under rainstorm conditions, which is consistent with the numerical simulation result. The shear strength sensitivity analysis results depicted an apparent linear relationship among cohesion c, internal friction angle φ, and stability coefficient. Moreover, the stability of the unstable slope is more sensitive to φ than to c.

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Section: Calculation Conditions and Parameter Selectionmentioning

confidence: 99%

Failure process and stability analysis of landslides in Southwest China while considering rainfall and supporting conditions

Gao

Zhang

et al. 2023

Front. Environ. Sci.

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“…In recent years, the numerical approach has been widely used due to its low cost, flexible parameter setting, no size constraint, high compatibility, and repeated calculations, among other benefits (Lo et al, 2016). At present, researchers have developed numerical simulation software based on different theories and constitutive models, which can be used to simulate the deformation, failure, movement, and accumulation of landslides, including the common finite element method (Leshchinsky et al, 2015;Mi and Wang, 2021), discrete element method (Tang et al, 2012;Hu et al, 2019;Chen and Song.2020), Lagrangian method (Zaniboni and Tinti, 2014), material point method (Liu et al, 2020;Ying et al, 2020) and smooth particle hydrodynamics method (Hu et al, 2014;Choi et al, 2020) and other new numerical methods. In contrast, the discrete element method (such as the particle flow discrete element method) is not only suitable for simulating large deformation, large displacement, and crack propagation, but also a powerful tool for simulating the mechanical response characteristics of real materials, allowing for further investigation of the failure mechanism and movement induced hazard process of landslides (Wei et al, 2019;Ma et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Numerical study on landslide dynamic process and its impact damage prediction to brick-concrete buildings, a case from Fenghuang street landslide in Shaanxi, China

Zhao

Chen²,

Jiang³

et al. 2023

Front. Earth Sci.

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The study of landslide dynamic process and impact damage has important theoretical and practical significance for landslide risk quantitative assessment. Taking Fenghuang Street landslide in Ningqiang County, Shaanxi Province, China as an example, the dynamic process of landslide and its damage to brick-concrete structure buildings are predicted by using discrete element method. Firstly, a three-dimensional numerical landslide model is established by means of the particle flow code system (PFC3D), which is based on landslide investigation, surveying, engineering exploration and geotechnical testing. Secondly, the whole process of landslide deformation, failure, movement and impact damage was simulated, and the velocity, displacement and impact force of the landslide in the motion process were quantitatively studied. Thirdly, the building model (brick-concrete structure) located at the foot of the landslide was constructed by PFC3D and finite element software (Midas/gen), respectively. The characteristics of deformation and displacement of the buildings after the landslide impact are analyzed, and the impact damage of the landslide is predicted. The results show that the rear edge of Fenghuang Street landslide first deforms and fails, and the leading edge is gradually pushed out. After the locking section of the front edge is broken, the landslide begins to slide as a whole, which is a typical push landslide. The main sliding time of the landslide is about 30 s, the maximum average velocity is 3.2 m/s, and the maximum displacement is about 40 m. After the landslide hits the building, the building is displaced in the moving direction of the landslide, and the wall of the building impacted by the landslide is destroyed, resulting in an collapse evident. The relevant research methodologies and findings in this paper can provide a reference for the risk assessment of the same type of landslides, especially the quantitative assessment of the vulnerability for the brick-concrete buildings at risk.

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Experimental study of the dynamic response and failure mode of anti-dip rock slopes

Liu

Zhao

Dong

et al. 2021

Bull Eng Geol Environ

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Finite-element modeling of submarine landslide triggered by seismic loading in saturated cohesive soil deposits

Cited by 7 publications

References 39 publications

Failure process and stability analysis of landslides in Southwest China while considering rainfall and supporting conditions

Failure process and stability analysis of landslides in Southwest China while considering rainfall and supporting conditions

Numerical study on landslide dynamic process and its impact damage prediction to brick-concrete buildings, a case from Fenghuang street landslide in Shaanxi, China

Experimental study of the dynamic response and failure mode of anti-dip rock slopes

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