000010109 001__ 10109
000010109 005__ 20141205154144.0
000010109 04107 $$aeng
000010109 046__ $$k2008-10-12
000010109 100__ $$aGonzalez, Lenart L.
000010109 24500 $$aCentrifuge Modeling of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading in Silty Sand

000010109 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010109 260__ $$b
000010109 506__ $$arestricted
000010109 520__ $$2eng$$aLiquefaction-induced lateral spreading of sloping ground and near waterfronts continues to be a major cause of damage to deep foundations. Even though various foundation analysis and design methods have been proposed, where the soil applies static lateral forces to the pile foundation, there is currently a huge uncertainty associated with the maximum lateral pressures and forces applied by the liquefie d soil, which translates into a similar huge uncertainty in the calculated maximum pile bending moments. Furthermore, recent centrifuge and full-scale 1g shaking table tests of single piles and pile groups indicate that the permeability of the liquefied sand is an extremely important and poorly understood factor, with a suggestion that the pile bending moments in a silty sand may also be much greater than in a clean sand. Previous centrifuge tests at Rensselaer Polytechnic Institute (RPI) of pile groups and single piles, using the same sand, but with water as pore fluid in one of the tests and viscous pore fluid in the other tests, hence simulating two sands of widely different permeability in the field, have shown significant difference in pile foundation response. This article presents preliminary results of two centrifuge tests conducted at the 150 g-ton RPI centrifuge to continue investigating the effect of soil permeability in the response of 2x2 pile groups to lateral spreading, comparing two techniques to simulate the prototype permeability in the field.

000010109 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010109 653__ $$aPile foundation, liquefaction, centrifuge, lateral spreading, permeability

000010109 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010109 720__ $$aGonzalez, Lenart L.$$iLucas, Daisy$$iAbdoun, T.
000010109 8560_ $$ffischerc@itam.cas.cz
000010109 8564_ $$s471663$$uhttps://invenio.itam.cas.cz/record/10109/files/04-02-0063.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-02-0063.
000010109 962__ $$r9324
000010109 980__ $$aPAPER