000011548 001__ 11548
000011548 005__ 20141205155921.0
000011548 04107 $$aeng
000011548 046__ $$k2008-10-12
000011548 100__ $$aSarkar, Rajib
000011548 24500 $$aInfluence of Soil Nonlinearity and Liquefaction on Dynamic Response of Pile Groups

000011548 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011548 260__ $$b
000011548 506__ $$arestricted
000011548 520__ $$2eng$$aNonlinearity of soil media plays an important role in soil-pile interaction problems. Moreover, during strong excitations, the soil may liquefy and this drastically affects the response of pile groups. In this study, a simple elasto-plastic constitutive model (the Drucker-Prager soil model) has been used to investigate the effect of soil nonlinearity in a three-dimensional soil-pile system. The model for the soil-pile system is idealized using 3-D finite elements. Kelvin elements are used at the boundary, simulating radiation conditions at infinity. The model and process of computation is verified using established results in literature. To investigate the effect of liquefaction, effective stress approach has been adopted. The soil medium has been considered undrained so that the pore pressure may develop. The study has been performed for single pile as well as for pile groups. First, the effect of nonlinearity on the dynamic stiffness of the soil-pile system has been examined. Next the study has been extended for probable liquefaction in the soil medium.

000011548 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011548 653__ $$aPile Groups, Nonlinearity of Soil, Dynamic Loading, Finite Elements, Liquefaction

000011548 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011548 720__ $$aSarkar, Rajib$$iMaheshwari, Bal Krishna
000011548 8560_ $$ffischerc@itam.cas.cz
000011548 8564_ $$s337600$$uhttps://invenio.itam.cas.cz/record/11548/files/04-01-0187.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0187.
000011548 962__ $$r9324
000011548 980__ $$aPAPER