Seismic Slope Failure Modelling Using the Mesh-Free SPH Method

Hiraoka, Nobutaka; Oya, Ayaka; Bui, Hai-Le; Rajeev, Pathmanathan; Fukagawa, Ryoichi

doi:10.21660/2013.9.3318

Cited by 8 publications

(8 citation statements)

References 4 publications

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“…The dynamic load is applied by applying acceleration to the bottom boundary particles. The principle is similar to the fixity boundary proposed by Hiraoka et al [34], where the virtual velocity of boundary particles can be expressed as follows:…”

Section: Boundary Treatment Approachmentioning

confidence: 99%

SPH Analysis of Sliding Material Volume and Influence Range of Soil Slope Under Earthquake

Zhang

Yu²,

Chen³

et al. 2022

Front. Phys.

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The post-failure process of soil slope triggered by earthquake is usually characterized by large deformation, which can be properly addressed by SPH simulation. Meanwhile, it is of engineering significance to evaluate the sliding volume and influence range after the failure of soil slope. The simulation method is based on the Drucker–Prager constitutive model and the SPH method. The fixity boundary and free boundary particles are adopted to realize the application of ground motion and the simulation of free field boundary, and this study proposes a dynamic analysis model for the whole-failure process simulation of soil slope under earthquakes. By comparing the PGA amplification coefficients obtained from the model test and numerical simulation, the accuracy of ground motion input and ground motion response simulation is verified. Then, the proposed dynamic analysis method is used to simulate a shaking table test of soil slope in the literature. The results of the deformation of the soil slope after the test are compared to verify the accuracy of the analysis method in the soil slope displacement and the influence range under the earthquake action. Finally, by comparing the SPH results of slopes under different angles with and without vibration, this study obtains the variation rules of sliding material volume and the influence range of soil slope under seismic vibration. The greater the slope angle is, the greater the displacement of the slope will be with vibration, and the sliding material volume will present different trends under different displacement thresholds. Moreover, the horizontal displacement of the slope under the effect of an earthquake increases nonlinearly with the increase of slope incline angle.

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Section: Boundary Treatment Approachmentioning

confidence: 99%

SPH Analysis of Sliding Material Volume and Influence Range of Soil Slope Under Earthquake

Zhang

Yu²,

Chen³

et al. 2022

Front. Phys.

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“…An experimental study conducted by Hiraoka et al 34 aimed to investigate the influence of seismic shaking on the deformation of a 0.5 m‐high sand slope. The sand used in the experiment was partially saturated, with a moisture content of 10%.…”

Section: Numerical Examplesmentioning

confidence: 99%

“…The provided soil parameters for the Mohr Coulomb model include the effective friction angle of 23°, apparent cohesion of 0.78 kPa, Young's modulus of 2.57 MPa, Poisson's ratio of 0.33, and moist unit weight of 16.5 kN/m

{}^3

. The soil's dilatancy angle was assumed to be 0 34 . The experimental setup consisted of a shaking table box with a steel horizontal base and smooth glass vertical sidewalls.…”

Section: Numerical Examplesmentioning

confidence: 99%

MPMICE: A hybrid MPM‐CFD model for simulating coupled problems in porous media. Application to earthquake‐induced submarine landslides

Tran,

Grimstad,

Ghoreishian Amiri

2023

Numerical Meth Engineering

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SummaryIn this paper, we describe a soil‐fluid‐structure interaction model that combines soil mechanics (saturated sediments), fluid mechanics (seawater or air), and solid mechanics (structures). The formulation combines the Material Point Method, which models large deformation of the porous media and the structure, with the Implicit Continuous‐fluid Eulerian, which models complex fluid flows. We validate the model and simulate the whole process of earthquake‐induced submarine landslides. We show that this model captures complex interactions between saturated sediment, seawater, and structure, so we can use the model to estimate the impact of potential submarine landslides on offshore structures.

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“…Methods used to investigate slope instability can be categorised as experimental and numerical. Researchers used to conduct shaking table tests and other experimental approaches to investigate the failure of slopes [4,5]. Though experimental studies are direct, they are expensive and time-consuming, and it is not easy to perform large-scale parametric studies.…”

Section: Introductionmentioning

confidence: 99%

“…In reference [7], Wu et al employed an implicit discontinuous deformation analysis (DDA) for the dynamic analysis of a slope in the Taiwan Chi-Chi earthquake. Other computational methods contributing to the development of slope stability analysis include the material point method (MPM) [8,9], the smoothed particle hydrodynamics (SPH) [4,5], the meshless method [10,11] and the extended finite element method (XFEM) [12].…”

Section: Introductionmentioning

confidence: 99%

Slope Failure of Noncohesive Media Modelled with the Combined Finite–Discrete Element Method

Chen

Wang

2019

Applied Sciences

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Slope failure behaviour of noncohesive media with the consideration of gravity and ground excitations is examined using the two-dimensional combined finite-discrete element method (FDEM). The FDEM aims at solving large-scale transient dynamics and is particularly suitable for this problem. The method discretises an entity into a couple of individual discrete elements. Within each discrete element, the finite element method (FEM) formulation is embedded so that contact forces and deformation between and of these discrete elements can be predicted more accurately. Noncohesive media is simply modelled with assembly of individual discrete elements without cohesion, that is, no joint elements need to be defined. To validate the effectiveness of the FDEM modelling, two examples are presented and compared with results from other sources. The FDEM results on gravitational collapse of rectangular soil heap and landslide triggered by the Chi-Chi earthquake show that the method is applicable and reliable for the analysis of slope failure behaviour of noncohesive media through comparison with results from other known methods such as the smoothed particle hydrodynamics (SPH), the discrete element method (DEM) and the material point method (MPM).

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Seismic Slope Failure Modelling Using the Mesh-Free SPH Method

Cited by 8 publications

References 4 publications

SPH Analysis of Sliding Material Volume and Influence Range of Soil Slope Under Earthquake

SPH Analysis of Sliding Material Volume and Influence Range of Soil Slope Under Earthquake

MPMICE: A hybrid MPM‐CFD model for simulating coupled problems in porous media. Application to earthquake‐induced submarine landslides

Slope Failure of Noncohesive Media Modelled with the Combined Finite–Discrete Element Method

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