A bounding surface plasticity model for highly crushable granular materials

Kan, Mojtaba E.; Taiebat, Hossein A.

doi:10.1016/j.sandf.2014.11.012

Cited by 39 publications

(13 citation statements)

References 42 publications

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“…In the current study presented here, the bounding surface plasticity model proposed by Kan and Taiebat (2014a) It was shown that although the construction process was complex, due to non-symmetric internal zoning of the dam, the predicted settlements at different monitoring points and different stages of construction were consistent with the field measurements, indicating that the proposed numerical procedure can be comfortably used to analyse the deformation of rockfill dams under static loading. The impoundment of the dam was also numerically simulated before the effects of the Wenchuan earthquake was applied to the model.…”

Section: Discussionsupporting

confidence: 61%

“…Note that based on the simulations of a variety of rockfill materials with rounded and angular particles, Kan and Taiebat (2014a) found that values of 1.5, 2.0 and 3.0 were sufficiently accurate for , N k and R , respectively. Also a default value of 1 kPa can be used for 0 cr p since granular materials exhibit particle crushing from very low stress levels.…”

Section: Calibration Of Materials Parametersmentioning

confidence: 96%

“…The need for a robust constitutive law becomes more evident for cases involving complex seismic loading conditions in boundary value problems. To this end, a newly developed bounding surface plasticity model for highly crushable materials and rockfills (Kan and Taiebat, 2014a) is used in this paper for the analysis of the dam. The main feature of the model, which differs from some existing models for rockfills, is its capability to incorporate the effect of particle crushing by translating the critical state and the limiting isotropic compression lines.…”

Section: Constitutive Modelmentioning

confidence: 99%

“…The translation of the critical state line captures irrecoverable plastic strains induced by particle crushing more realistically compared to those models with fixed critical state line. Detailed description of the model can be found in Kan and Taiebat (2014a). A brief summary of the model is given here.…”

Section: Constitutive Modelmentioning

confidence: 99%

“…A can be calibrated by plotting the stress ratio h against the measured total dilatancy in the standard drained triaxial compression tests, assuming that elastic strains are negligible compared to plastic strains. For detailed process of calibration of model parameters see Kan & Taiebat (2014a).…”

Section: Calibration Of Materials Parametersmentioning

confidence: 99%

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Application of advanced bounding surface plasticity model in static and seismic analyses of Zipingpu Dam

Kan

Taiebat

2016

Can. Geotech. J.

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Application of advanced bounding surface plasticity model in static and seismic analyses of Zipingpu Dam AbstractThe strong ground motion of the Wenchuan earthquake that hit the Zipingpu Dam in China in 2008 has provided an excellent benchmark to study the behaviour of large modern rockfill dams subjected to seismic loading. The performance of the dam during construction and prior to and after the earthquake loading has been recorded with good accuracy, and provides a reliable database to examine the reliability of available constitutive models and numerical methods in predicting the static and dynamic behaviour of embankment dams. In this paper, an advanced bounding surface plasticity model has been used in a series of numerical analyses to study the static and dynamic behaviour of Zipingpu Dam. The model can take into account particle breakage that may occur in monotonic and cyclic loading of rockfill materials. The material parameters required for the model are calibrated based on the results of available monotonic and cyclic triaxial tests. In the numerical procedure, the staged construction of the dam and the subsequent impounding of the reservoir are simulated, followed by dynamic loading. At each stage, the results of the numerical analysis are compared with in situ monitoring records of the dam. The results of the numerical simulation and the displacements measured after the earthquake are also compared with those estimated by two simplified engineering procedures that are routinely used in practice. The effectiveness and applicability of the simplified procedures to such a large dam subjected to an earthquake with a long duration is also discussed. procedures to such a large dam subjected to an earthquake with a long duration is also discussed.

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Section: Discussionsupporting

confidence: 61%

Section: Calibration Of Materials Parametersmentioning

confidence: 96%

Section: Constitutive Modelmentioning

confidence: 99%

Section: Constitutive Modelmentioning

confidence: 99%

Section: Calibration Of Materials Parametersmentioning

confidence: 99%

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