Effective stress analysis for the seismic response of shallow foundations on liquefiable sand

Bouckovalas, GD; Karamitros, DK; Papadimitriou, AG

dc.contributor.author	Andrianopoulos, KI	en
dc.contributor.author	Bouckovalas, GD	en
dc.contributor.author	Karamitros, DK	en
dc.contributor.author	Papadimitriou, AG	en
dc.date.accessioned	2014-03-01T02:50:21Z
dc.date.available	2014-03-01T02:50:21Z
dc.date.issued	2006	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35080
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-56149098024&partnerID=40&md5=ed9a7f1cd9a72704d89e636dae491a1a	en
dc.subject.other	Boundary value problems	en
dc.subject.other	Centrifugation	en
dc.subject.other	Clay minerals	en
dc.subject.other	Differential equations	en
dc.subject.other	Geologic models	en
dc.subject.other	Groundwater	en
dc.subject.other	Groundwater flow	en
dc.subject.other	Hydrogeology	en
dc.subject.other	Initial value problems	en
dc.subject.other	Model structures	en
dc.subject.other	Number theory	en
dc.subject.other	Numerical methods	en
dc.subject.other	Sand	en
dc.subject.other	Seismic response	en
dc.subject.other	Seismology	en
dc.subject.other	Soil liquefaction	en
dc.subject.other	Strength of materials	en
dc.subject.other	Stress analysis	en
dc.subject.other	Boundary values	en
dc.subject.other	Bounding surface models	en
dc.subject.other	Capacity degradations	en
dc.subject.other	Centrifuge model tests	en
dc.subject.other	Clay caps	en
dc.subject.other	Cohesive soils	en
dc.subject.other	Critical thicknesses	en
dc.subject.other	Effective stresses	en
dc.subject.other	Finite differences	en
dc.subject.other	Fully coupled	en
dc.subject.other	Laboratory tests	en
dc.subject.other	Mode of failures	en
dc.subject.other	Model constants	en
dc.subject.other	Numerical methodologies	en
dc.subject.other	Parametric analysis	en
dc.subject.other	Sand layers	en
dc.subject.other	Sand liquefactions	en
dc.subject.other	Shallow foundations	en
dc.subject.other	Geotechnical engineering	en
dc.title	Effective stress analysis for the seismic response of shallow foundations on liquefiable sand	en
heal.type	conferenceItem	en
heal.publicationDate	2006	en
heal.abstract	The seismic response of shallow foundations on liquefiable sand is studied herein through fully coupled effective stress analyses. The numerical methodology that is used, is based on a bounding surface model for non-cohesive soils implemented into the Finite Difference code FLAC2D. Model constants are calibrated against element laboratory tests on Nevada sand, while the simulation of centrifuge model tests of the VELACS project validates the User-Defined Model's performance on boundary value problems. Using this well established methodology, parametric analyses are performed, for the common case of a thin clay cap overlying a liquefiable sand layer, in order to provide insight to the mode of failure and the mechanism of settlement accumulation. It is shown that groundwater flow during and immediately after shaking affects the response, while there is a ""critical thickness"" of the clay cap beyond which sand liquefaction does not lead to bearing capacity degradation is also evaluated. © 2006 Taylor & Francis Group.	en
heal.journalName	Proceedings of the 6th European Conference on Numerical Methods in Geotechnical Engineering - Numerical Methods in Geotechnical Engineering	en
dc.identifier.spage	211	en
dc.identifier.epage	216	en