000010856 001__ 10856
000010856 005__ 20141205155810.0
000010856 04107 $$aeng
000010856 046__ $$k2008-10-12
000010856 100__ $$aMaleki, Mohammad
000010856 24500 $$aApplication of New Bounding Surface Plasticity Model for Cyclic Loading of Satuarted Sands

000010856 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010856 260__ $$b
000010856 506__ $$arestricted
000010856 520__ $$2eng$$aCyclic response of geomaterials is complex due to the pressure and specific volume dependency of the stress-stain relationship and the highly nonlinear behavior of the soil. This is particularly the case under undrained conditions in granular soils, where repeated loading and unloading can lead to a substantial rise in the pore water pressure and a sudden loss in the shear strength and the stiffness of the soil. Concerted efforts have been made to develop some plasticity models to predict non-linear behavior of soils. Conventional plasticity models such as Cam clay always assume a fixed shape of yield surface with a purely elastic interior domain, associative flow rule and using isotropic hardening rule for the evolution of the yield surface. These attributes lead to conceptually simple, non-rigorous and computationally efficient models. Cam clay model has some weakness, such as overestimating peak strength of over-consolidated clays and dense sands and unable to predict the static liquefaction failure observed in undrained loading of loose sands. Assumption of a purely elastic domain inside the yield surface limits the ability of these models to predict plastic deformations during unloading and subsequent reloading stages of a cyclic loading, which can lead to dynamic liquefaction in loose sand. This research is aimed to use bounding surface plasticity model to predict non-linear behavior of saturated soil subjected to dynamic loading. This method is computationally simple, uses fewer model parameters and results of the simulation fit experimental data with reasonable accuracy.

000010856 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010856 653__ $$asaturated sands, cyclic Loading, constitutive equation, bounding surface plasticity 

000010856 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010856 720__ $$aMaleki, Mohammad$$iHashemolhosseini, S.Hamid$$iHalabian, Amir M.
000010856 8560_ $$ffischerc@itam.cas.cz
000010856 8564_ $$s292329$$uhttps://invenio.itam.cas.cz/record/10856/files/04-01-0010.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0010.
000010856 962__ $$r9324
000010856 980__ $$aPAPER