Modeling of Initial Stresses and Seepage for Large Deformation Finite-Element Simulation of Sensitive Clay Landslides

Wang, Chen; Hawlader, Bipul; Perret, Didier; Soga, Kenichi; Chen, Jin

doi:10.1061/(asce)gt.1943-5606.0002626

Cited by 16 publications

(2 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where K 0 is the coefficient of static earth pressure, γ is the unit weight of the soil sample, and z is the depth. For sensitive clay, the values of K 0 always fall within the range of 0.5-1.5, with 0.5 often serving for K 0 in the case of Norwegian sensitive clays [35]. In this research, confining stresses are applied to the soil sample during the numerical MVST to represent the in situ confining stress state of soils under shallow seabed surfaces.…”

Section: Miniature Vane Shear Test Under Confining Stress Conditionsmentioning

confidence: 99%

Numerical Investigations of Undrained Shear Strength of Sensitive Clay Using Miniature Vane Shear Tests

Shen

Wang

Chen

et al. 2023

JMSE

View full text Add to dashboard Cite

The laboratory miniature vane shear test (MVST) has been widely used to measure the undrained shear strength of marine sediments in offshore engineering. However, the transfer of the soil sample in tube samplers from the seabed to the laboratory releases the in situ confining stress acting on the soil and will decrease the soil strength. In this research, in order to investigate the effects of confining stress on the undrained shear strength of marine sediments, the Coupled Eulerian-Lagrangian (CEL) approach in ABAQUS is used to model the three-dimensional standard and miniature vane shear tests to estimate the undrained shear strength of sensitive clay with different sensitivities under various stress conditions. Based on the numerical simulation results, a linear strength model that not only considers confining stress effects but also can eliminate the size effects caused by vane blades of MVST is proposed. The proposed model can be used to estimate the undrained shear strength of the sensitive clay under shallow seabed surfaces.

show abstract

Section: Miniature Vane Shear Test Under Confining Stress Conditionsmentioning

confidence: 99%

Numerical Investigations of Undrained Shear Strength of Sensitive Clay Using Miniature Vane Shear Tests

Shen

Wang

Chen

et al. 2023

JMSE

View full text Add to dashboard Cite

show abstract

“…Recently, multiple numerical methods have been developed and applied to investigate the postfailure processes of sensitive clay landslides. Examples include the coupled Eulerian-Lagrangian approach [11][12][13][14], the material point method, and the particle finite element method (PFEM) [15][16][17][18]. These studies primarily focused on upward landslides, particularly those indicating flow slide failures or spread failures due to toe erosion of the slope or seismic loading.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of downward progressive landslides in sensitive clay

Zhang,

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Landslides in sensitive clays are catastrophic events that threaten life and property. When plastic strain occurs in sensitive clays, there is a significant reduction in the undrained shear strength. Consequently, even minor triggers can lead to multiple progressive landslides, causing extensive devastation. Investigating landslides in sensitive clay presents challenges, necessitating robust numerical methods to comprehend failure modes and collapse behaviors, particularly in the post-failure phase. Although several numerical methods have been utilized for simulations, most have primarily focused on upward progressive landslides. In this study, we adopted the nodal integration-based particle finite element method to simulate downward progressive landslides triggered by surcharge loads from an embankment near the crest in sensitive clay on a long slope. We also considered nonlinear strain softening in sensitive clays. The effects of the strain softening rate and strength gradient of the sensitive clay layer on the failure mechanisms and destruction extent were investigated. The simulation results reveal that a downward progressive landslide initiates with a localized flow slide surrounding the embankment and usually involves a combination of various failure modes.

show abstract

An effective and stabilised (u−pl) SPH framework for large deformation and failure analysis of saturated porous media

Lian

Bui

Nguyen

et al. 2023

Computer Methods in Applied Mechanics and Engineering

View full text Add to dashboard Cite

Modeling of Initial Stresses and Seepage for Large Deformation Finite-Element Simulation of Sensitive Clay Landslides

Cited by 16 publications

References 57 publications

Numerical Investigations of Undrained Shear Strength of Sensitive Clay Using Miniature Vane Shear Tests

Numerical Investigations of Undrained Shear Strength of Sensitive Clay Using Miniature Vane Shear Tests

Numerical modelling of downward progressive landslides in sensitive clay

An effective and stabilised (u−pl) SPH framework for large deformation and failure analysis of saturated porous media

Contact Info

Product

Resources

About