Seismic landslide simulations in discontinuous deformation analysis

Wu, Jian Hong

doi:10.1016/j.compgeo.2010.03.007

Cited by 112 publications

(39 citation statements)

References 18 publications

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“…DDA is a discrete numerical analysis method and is used to simulate the mechanical behavior of a block assemblage. DDA has been developed by researchers [11][12][13] to simulate the failure behavior of rock slope with distinct discontinuities.…”

Section: Introductionmentioning

confidence: 99%

Large deformation failure analysis of the soil slope based on the material point method

Huang

Guo

et al. 2015

Comput Geosci

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The failure analysis of the soil slope is a very important topic in the field of geomechanics. Being a fully Lagrangian particle method, the material point method (MPM) has distinct advantages in solving the extremely large deformation problem. For both cohesive and noncohesive soil slopes, the large deformation failure problems are analyzed using MPM and the Drucker-Prager constitutive model. For verification of the numerical method, the comparison between MPM and analytical solutions of the dam break problem is presented. Moreover, the numerical results by MPM are compared with the experimental results for the collapse of the aluminum-bar assemblage. Simulations reveal the cohesive soil slope under gravity has a shear band failure mode. Computational results show the reposed angle of non-cohesive soil slope is less than the internal friction angle, and the reason for this phenomenon is presented. The purpose of this study is to give a further understanding of the slope failure in different soil types and provide a computational tool for the failure analysis of soil slopes.

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Section: Introductionmentioning

confidence: 99%

Large deformation failure analysis of the soil slope based on the material point method

Huang

Guo

et al. 2015

Comput Geosci

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“…To avoid this issue, Ke [28] proposed that, after vector d is obtained through the open-close iteration, formula (8) can be used to obtain the incremental displacements u and v. Koo and Chern [30] also proposed a similar method. However, the error in each step accumulates so much so that the block is still noticeably distorted after undergoing a large rotation.…”

Section: Review On the Existing Remedies For False Volume Expansionmentioning

confidence: 99%

“…[1,2], discontinuous deformation analysis (DDA) [3] is now recognized as an efficient tool for solving the various discontinuities in geotechnical problems. Because it is effective in simulating the dynamic mechanic behavior of block systems [4], DDA has been used to address diverse problems in various types of structures, such as the stability assessment of rock slopes [5]; the path tracking of rockfalls [6]; the blasting effect evaluation [7]; the simulation of landslides [8,9]; the construction of rock-fill dams [10], stacked block piles [11], and masonry structures [12]; and the analysis of coupled hydromechanical processes [13]. With the modification of the cohesion effect in sliding [14], DDA is expected to be used in the stability analysis of soil slopes.…”

Section: Introductionmentioning

confidence: 99%

An efficient remedy for the false volume expansion of DDA when simulating large rotation

Jiang

Zheng

2015

Computers and Geotechnics

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“…The loading of the timedependent acceleration is widely used by many researchers to conduct earthquake analysis (e.g., Hatzor and Feintuch, 2001;Sasaki et al, 2004;Wu, 2010;Ning and Zhao, 2013). In practice, acceleration loadings can be used for the failure mass (method 1) or the base (method 2) as the volume forces.…”

Section: Ddamentioning

confidence: 99%

“…In this method, the seismic accelerations were applied to the base block, which was different from the former seismic loading input model. Wu et al (2009), Wu (2010, Wu and Chen (2011) and Wu and Tsai (2011) applied the DDA to simulate the kinematic behavior of sliding rock blocks in the Tsaoling landslide and the Chiu-fen-erhshan landslide, which were induced by the 1999 Chi-Chi earthquake.…”

Section: Ddamentioning

confidence: 99%