Constitutive model for 1-D cyclic soil behaviour applied to seismic analysis of layered deposits

Gerolymos, N; Gazetas, G

dc.contributor.author	Gerolymos, N	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:22:01Z
dc.date.available	2014-03-01T01:22:01Z
dc.date.issued	2005	en
dc.identifier.issn	0038-0806	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16442
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33644684691&partnerID=40&md5=b406f966406054f1052c7332fad86a0d	en
dc.subject	Cyclic loading	en
dc.subject	Damping	en
dc.subject	Nonlinear ground response	en
dc.subject	Port Island array	en
dc.subject	Shear modulus	en
dc.subject	Soft clay seismic response	en
dc.subject	Soil model (IGC: D7/E8/E13)	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Clay minerals	en
dc.subject.other	Codes (symbols)	en
dc.subject.other	Damping	en
dc.subject.other	Difference equations	en
dc.subject.other	Nonlinear equations	en
dc.subject.other	Ports and harbors	en
dc.subject.other	Programming theory	en
dc.subject.other	Railroad tracks	en
dc.subject.other	Seismic response	en
dc.subject.other	Seismology	en
dc.subject.other	Soils	en
dc.subject.other	Stiffness	en
dc.subject.other	Wave equations	en
dc.subject.other	Cyclic loading	en
dc.subject.other	Nonlinear ground response	en
dc.subject.other	Port Island array	en
dc.subject.other	Shear modulus	en
dc.subject.other	Soft clay seismic response	en
dc.subject.other	Soil model (IGC: D7/E8/E13)	en
dc.subject.other	Geologic models	en
dc.title	Constitutive model for 1-D cyclic soil behaviour applied to seismic analysis of layered deposits	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	A phenomenological constitutive model, 'BWGG', is developed for the non-linear one-dimensional ground response analysis of layered sites. The model reproduces the nonlinear hysteretic behaviour of a variety of soils, and possesses considerable flexibility to represent complex patterns of cyclic behaviour such as stiffness decay and loss of strength due to build-up of pore-water pressure, cyclic mobility, and load induced anisotropy. It also has the ability of simultaneously generating realistic modulus and damping versus strain curves, by a simple calibration of only three of its parameters. The model is implemented through an explicit finite-difference algorithm into a computer code which perform integration of the wave equations to obtain the nonlinear response of the soil. The code, 'NL-DYAS', is then applied to study the seismic response of a soft marine normally-consolidated clay. The results are compared with those of widely used codes. Finally, the records of the Port Island array during the Kobe 1995 earthquake, are utilized, and the model is shown to ""predict"" the observed response with sufficient accuracy.	en
heal.publisher	JAPANESE GEOTECHNICAL SOC	en
heal.journalName	Soils and Foundations	en
dc.identifier.isi	ISI:000231489000012	en
dc.identifier.volume	45	en
dc.identifier.issue	3	en
dc.identifier.spage	147	en
dc.identifier.epage	159	en