Modeling Dike Failure using the Material Point Method

Martinelli, Mario; Rohe, Alexander; Soga, Kenichi

doi:10.1016/j.proeng.2017.01.042

Cited by 23 publications

(17 citation statements)

References 4 publications

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“…The analyses presented in the following sections have been carried out using the ANURA3D code, developed by the ANURA3D MPM Research Community [46]. Two different approaches have been developed in the last years: the single-layer approach [36][37][38][39] and the multi-layer one [40][41][42][43]. A scheme of these approaches is shown in Figure 4.…”

Section: Materials Point Methodsmentioning

confidence: 99%

Analysis of the Slope Response to an Increase in Pore Water Pressure Using the Material Point Method

Troncone

Conte

Pugliese

2019

Water

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Traditional numerical methods, such as the finite element method or the finite difference method, are generally used to analyze the slope response in the pre-failure and failure stages. The post-failure phase is often ignored due to the unsuitability of these methods for dealing with problems involving large deformations. However, an adequate analysis of this latter stage and a reliable prediction of the landslide kinematics after failure are very useful for minimizing the risk of catastrophic damage. This is generally the case of the landslides triggered by an excess in pore water pressure, which are often characterized by high velocity and long run-out distance. In the present paper, the deformation processes occurring in an ideal slope owing to an increase in pore water pressure are analyzed using the material point method (MPM) that is a numerical technique capable of overcoming the limitations of the above-mentioned traditional methods. In particular, this study is aimed to investigate the influence of the main involved parameters on the development of a slip surface within the slope, and on the kinematics of the consequent landslide. The obtained results show that, among these parameters, the excess water pressure exerts the major influence on the slope response. A simple equation is also proposed for a preliminary evaluation of the run-out distance of the displaced soil mass.

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Section: Materials Point Methodsmentioning

confidence: 99%

Analysis of the Slope Response to an Increase in Pore Water Pressure Using the Material Point Method

Troncone

Conte

Pugliese

2019

Water

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“…It requires an accurate knowledge of the geotechnical properties of the sand bed (such as dilatancy and compaction), as well as the hydraulic properties of the sand-carrying density flow (such as erosion, deposition, and turbulent mixing). Progress is being made with computational fluid dynamics models [57] and material point methods [63,64]. The best approach may prove to be a hybrid model, combining the strength of both types of schematizations.…”

Section: Anatomy Of An Rbf Eventmentioning

confidence: 99%

Watching the Beach Steadily Disappearing: The Evolution of Understanding of Retrogressive Breach Failures

Mastbergen

Beinssen

Nédélec

2019

JMSE

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Retrogressive breach failures or coastal flow slides occur naturally in the shoreface in fine sands near dynamic tidal channels or rivers. They sometimes retrogress into beaches, shoal margins and riverbanks where they can threaten infrastructure and cause severe coastal erosion and flood risk. Ever since the first reports were published in the Netherlands over a century ago, attempts have been made to understand the geo-mechanical mechanism of flow slides. In this paper we have established that events, observed during the active phase, are characterized by a slow but steady retrogression into the shoreline, often continuing for many hours. This can be explained by the breaching mechanism, as will be clarified in this paper. Recently, further evidence has become available in the form of video footage of active events in Australia and elsewhere, often publicly posted on the internet. All these observations justify the new term 'retrogressive breach failure' (RBF event). The mechanism has been confirmed in flume tests and in a field experiment. With a better understanding of the geo-mechanical mechanism, current protection methods can be better understood, and new defense strategies can be envisaged. In writing this paper, we hope that the coastal science and engineering communities will better recognize and understand these intriguing natural events.

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“…The double-point two-phase MPM formulation [26,31] based on the mixture theory is used to model the water-soil interactions. In this approach, the soil skeleton and the pore liquid in the saturated soil are represented separately by two sets of material points: Solid material points and water material points (Figure 1).…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…Although many efforts have been made to numerically reproduce the main features of the process, the overtopping failure of embankments is still poorly understood. Moreover, most of the aforementioned numerical methods are mesh-based approaches and have difficulties in accurately modeling the time evolution of the embankment embankment overtopping, only some of the basic equations solved are quoted for the convenience of readers in understanding the two-phase MPM formulation, and for detailed description of the algorithms readers are referred to the literature [26,31]. The governing equations of the double-point two-phase MPM include the mass and momentum conservations of both solid and liquid phases with their respective constitutive equations.…”

Section: Introductionmentioning

confidence: 99%

“…In this approach, the soil skeleton and the pore liquid in the saturated soil are represented separately by two sets of material points: Solid material points and water material points (Figure 1). This paper focuses on the application of two-phase MPM to simulate embankment overtopping, only some of the basic equations solved are quoted for the convenience of readers in understanding the two-phase MPM formulation, and for detailed description of the algorithms readers are referred to the literature [26,31].…”

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confidence: 99%

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Simulating the Overtopping Failure of Homogeneous Embankment by a Double-Point Two-Phase MPM

Yang

Qiu

et al. 2019

Water

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Embankments are usually constructed along rivers as a defense structure against flooding. Overtopping failure can cause devastating and fatal consequences to life and property of surrounding areas. This motivates researchers to study the formation, propagation, and destructive consequences of such hazards in risk analysis of hydraulic engineering. This paper reports a numerical simulation of failure processes in homogeneous embankments due to flow overtopping. The employed numerical approach is based on a double-point two-phase material point method (MPM) considering water-soil interaction and seepage effects. The simulated results are compared to available laboratory experiments in the literature. It was shown that the proposed method can predict the overtopping failure process of embankments with good accuracy. Furthermore, the effects of the cohesion, internal fiction angle, initial porosity, and maximum porosity of soil on the embankment failure are investigated.2 of 15 breach, since the real overtopping failure phenomenon is, in fact, an unsteady process involving large deformations, free-surface flows, moving boundary, and water-soil interactions. To deal with these challenges, several meshless methods, such as smoothed particle hydrodynamics (SPH) [13,14], moving particle semi-implicit method (MPS) [15], element-free Galerkin method (EFGM) [16], and material point method (MPM) [17,18], have been developed to model large deformation problems. For examples, Gotoh et al. [19,20] modeled embankment erosion due to overflow using MPS, Li et al. [21] simulated erosion of HPTRM levee based on SPH, Zhang et al. [22] modeled failures of dike due to water level-up and rainfall using SPH, Liu et al. [23] simulated piping erosion process of dike foundation by EFGM. Nikolic et al. [24] presented a discrete beam lattice model capable of simulating localized failure in a heterogeneous fluid-saturated poro-plastic solid. Zhao and Liang [25] applied MPM to model seepage flow through embankments, Martinelli et al.[26] modeled the failure of a sand dike due to seepage flow using two-phase MPM. In this work, the MPM was employed for modeling the overtopping failure of embankments because it has several advantages over other meshless methods such as EFGM, MPS, and SPH: The boundary condition realization is as easy as in the finite element method (FEM) for the use of background mesh in MPM [27]. Time-consuming neighbor particle searching is required in SPH, MPS and EFGM, but the MPM requires only the identification of particles relative to the background mesh. The MPM also avoids the tensile instability that is evident in the SPH [27].The MPM was first proposed by Sulsky et al. [17] in 1994, which uses the Lagrangian particle and the Euler background mesh to describe large deformation problems. The particles move freely across the background mesh and carry all physical parameters such as stress, density, mass, velocity, and other historical variables. The MPM combines the advantages of the Euler method and the Lagrangian method ...

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Modeling Dike Failure using the Material Point Method

Cited by 23 publications

References 4 publications

Analysis of the Slope Response to an Increase in Pore Water Pressure Using the Material Point Method

Analysis of the Slope Response to an Increase in Pore Water Pressure Using the Material Point Method

Watching the Beach Steadily Disappearing: The Evolution of Understanding of Retrogressive Breach Failures

Simulating the Overtopping Failure of Homogeneous Embankment by a Double-Point Two-Phase MPM

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