000012182 001__ 12182
000012182 005__ 20141205160027.0
000012182 04107 $$aeng
000012182 046__ $$k2008-10-12
000012182 100__ $$aYang, J.
000012182 24500 $$aUndrained Cyclic Behavior of Loose Sand under Anisotropic Consolidation

000012182 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012182 260__ $$b
000012182 506__ $$arestricted
000012182 520__ $$2eng$$aThis paper presents an experimental study of the liquefaction behavior of sand under initial shear conditions. The emphasis of the study was placed on loose sand by using cyclically loaded triaxial tests, where sand specimens were subjected to anisotropic consolidation to arrive at different levels of static shear stresses before the application of cyclic loading. The study reveals that a small static shear applied in compression is beneficial to liquefaction resistance but high levels of initial shear stress may become a detrimental factor. It is proposed that a threshold initial shear stress level above which cyclic resistance starts to drop exists in loose sand. Compared with an initial shear applied in compression, an initial shear stress applied in extension is found to impose a contrasting behavior such that increasing the initial shear stress level always reduces the cyclic resistance. This behavior is considered to be the result of the enhanced contractiveness of sand in extension.

000012182 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012182 653__ $$asoil liquefaction, initial static shear, laboratory testing, dilatancy, sand

000012182 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012182 720__ $$aYang, J.$$iSze, H.Y.
000012182 8560_ $$ffischerc@itam.cas.cz
000012182 8564_ $$s194749$$uhttps://invenio.itam.cas.cz/record/12182/files/04-01-0033.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0033.
000012182 962__ $$r9324
000012182 980__ $$aPAPER