Evaluation of impact force of rock landslides acting on structures using discontinuous deformation analysis

Zhang, Yingbin; Zhang, Yingbin; Peng, Xinyu; Chen, Guangqi; Zhao, John X.

doi:10.1016/j.compgeo.2019.103137

Cited by 38 publications

(2 citation statements)

References 59 publications

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“…By employing explicit solutions for governing equations, DEM has a clear physical meaning, while the considered domain is usually limited because element size needs to be relatively small. As a representative of implicit DEMs, DDA method applies constant strain elements to reproduce blocks in the continuum parts and springs on the boundaries of the blocks to determine the relationships between relative displacements and forces [18][19][20][21][22]. Due to the difficulty of determining mechanical parameters for springs, there is the possibility of inaccurate simulations in transition from continuity to discontinuity.…”

Section: A Hybrid Methods Of Pfe/iementioning

confidence: 99%

A PFE/IE – SPH joint approach to model landslides from initiation to propagation

Lin

Pastor

Liu

et al. 2019

Computers and Geotechnics

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Section: A Hybrid Methods Of Pfe/iementioning

confidence: 99%

A PFE/IE – SPH joint approach to model landslides from initiation to propagation

Lin

Pastor

Liu

et al. 2019

Computers and Geotechnics

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“…However, the estimation of the released volume and the prediction of the sequential flow paths of the moving mass for a landslide-prone area are still challenging tasks because of their high degree of uncertainty. Numerical simulations, founded on physics-based mechanical models (Kuo et al, 2009(Kuo et al, , 2011(Kuo et al, , 2013Mergili et al, 2020), discrete numerical approaches (Wu, 2010;Lo et al, 2011;Song et al, 2017;Yu et al, 2019) or statistics-based empirical models (Scheidegger, 1973;Manzella and Labiouse, 2013;Chen et al, 2014;Zhan et al, 2017), are common tools for risk assessment or for evaluating mitigation or remediation measures.…”

Section: Introductionmentioning

confidence: 99%

An Idealized Landslide Failure Surface and Its Impacts on the Traveling Paths

Tai

et al. 2020

Front. Earth Sci.

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Numerical scenario simulation may serve as an efficient and powerful tool for hazard assessment, but it often suffers from the lack of a definite failure surface before the occurrence of failure. In the present study, an idealized curved surface (ICS) is proposed for mimicking the sliding surface in the numerical simulation. Different from the conventional Sloping Local Base Level (SLBL) or Scoops3D method, this idealized surface consists of two curvatures, which are defined in the down-slope and cross-slope directions, respectively. Applying this idealized surface to 45 historical landslides of sliding type in southern Taiwan, two specific relations of geometry (length, curvature radius, and depth) in the down-slope and cross-slope directions are figured out. These specific relations simplify the complexity of constructing the idealized curved surface for areas prone to landslides for the sake of hazard assessments. That is, once the area with landslide susceptibility is identified and the associated released volume is given, the idealized sliding surface can be uniquely determined with the help of these geometric relations. The proposed method is integrated with a two-phase grain-fluid model and numerically validated against a historical large-scale landslide for investigating its feasibility. Although the idealized failure surface may deviate from that determined by the post-event investigation, it is interesting to note that the major discrepancy is mainly found at the first stage. The differences (both flow thickness and paths) reduce over time, and only minor discrepancies can be identified at the deposition stage. These findings reveal the weak co-relation between the geometry of the failure surface and the flow paths. It also indicates the feasibility of the ICS for predicting the flow paths by scenario investigation, especially when the exact sliding surface of a landslide is not available.

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Development of a Coupled DDA–SPH Method and its Application to Dynamic Simulation of Landslides Involving Solid–Fluid Interaction

et al. 2019

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Evaluation of impact force of rock landslides acting on structures using discontinuous deformation analysis

Cited by 38 publications

References 59 publications

A PFE/IE – SPH joint approach to model landslides from initiation to propagation

A PFE/IE – SPH joint approach to model landslides from initiation to propagation

An Idealized Landslide Failure Surface and Its Impacts on the Traveling Paths

Development of a Coupled DDA–SPH Method and its Application to Dynamic Simulation of Landslides Involving Solid–Fluid Interaction

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