Fully coupled dynamic analysis of an Earth dam

Elia, G; Amorosi, A; Chan, AHC; Kavvadas, MJ

dc.contributor.author	Elia, G	en
dc.contributor.author	Amorosi, A	en
dc.contributor.author	Chan, AHC	en
dc.contributor.author	Kavvadas, MJ	en
dc.date.accessioned	2014-03-01T11:45:11Z
dc.date.available	2014-03-01T11:45:11Z
dc.date.issued	2011	en
dc.identifier.issn	0016-8505	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/37273
dc.subject	Constitutive relations	en
dc.subject	Dams	en
dc.subject	Dynamics	en
dc.subject	Earthquakes	en
dc.subject	Embankments	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Constitutive relations	en
dc.subject.other	Dam construction	en
dc.subject.other	Deformation pattern	en
dc.subject.other	Dissipation of excess pore water pressure	en
dc.subject.other	Dynamic performance	en
dc.subject.other	Earth dam	en
dc.subject.other	Earthquake records	en
dc.subject.other	Earthquake shaking	en
dc.subject.other	Effective stress	en
dc.subject.other	Elastoplastic constitutive model	en
dc.subject.other	Excess pore water pressure	en
dc.subject.other	Finite Element	en
dc.subject.other	Foundation soils	en
dc.subject.other	Fully-coupled	en
dc.subject.other	Geological history	en
dc.subject.other	Hardening parameters	en
dc.subject.other	Homogeneous earth dam	en
dc.subject.other	Hysteretic damping	en
dc.subject.other	Initial state variables	en
dc.subject.other	Laboratory test	en
dc.subject.other	Multi-surface	en
dc.subject.other	Permanent displacements	en
dc.subject.other	Reservoir impounding	en
dc.subject.other	Return periods	en
dc.subject.other	Seismic behaviour	en
dc.subject.other	Seismic loadings	en
dc.subject.other	Structured soil	en
dc.subject.other	Viscous damping	en
dc.subject.other	Cofferdams	en
dc.subject.other	Constitutive models	en
dc.subject.other	Damping	en
dc.subject.other	Dynamic analysis	en
dc.subject.other	Earthquakes	en
dc.subject.other	Embankment dams	en
dc.subject.other	Finite element method	en
dc.subject.other	Geologic models	en
dc.subject.other	Pore pressure	en
dc.subject.other	Pressure distribution	en
dc.subject.other	Rivers	en
dc.subject.other	Soils	en
dc.subject.other	Water	en
dc.subject.other	Reservoirs (water)	en
dc.subject.other	bedrock	en
dc.subject.other	constitutive equation	en
dc.subject.other	dam construction	en
dc.subject.other	damping	en
dc.subject.other	deformation	en
dc.subject.other	displacement	en
dc.subject.other	dynamic analysis	en
dc.subject.other	earth dam	en
dc.subject.other	embankment	en
dc.subject.other	finite element method	en
dc.subject.other	foundation	en
dc.subject.other	hysteresis	en
dc.subject.other	pore pressure	en
dc.subject.other	porewater	en
dc.subject.other	seismic design	en
dc.title	Fully coupled dynamic analysis of an Earth dam	en
heal.type	other	en
heal.identifier.primary	10.1680/geot.8.P.028	en
heal.identifier.secondary	http://dx.doi.org/10.1680/geot.8.P.028	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The paper studies the seismic behaviour of an existing homogeneous earth dam using a fully coupled finite element effective stress approach in conjunction with a recently developed multi-surface, elasto-plastic constitutive model for structured soils. The model is calibrated using laboratory test results for the embankment material and the foundation soils. The initial state variables (stress, hardening parameters) are determined by simulating a simplified geological history of the foundation soil, dam construction stages and reservoir impounding, prior to the application of the earthquake shaking at the bedrock level. The paper critically reviews the role of the constitutive model parameters, the hysteretic damping introduced by the model and the additional viscous damping parameters in the accumulation of permanent displacements and in the development and subsequent dissipation of excess pore water pressures due to the seismic loading. The analyses, carried out with reference to a set of earthquake records related to different return periods, show that the overall behaviour of the system in terms of displacements is characterised by a more enhanced deformation pattern of the downstream slope as compared with the upstream one. The large plastic strains accumulation induced throughout the shaking is followed by the development of excess pore water pressures inside the dam and the foundation deposit. Nonetheless, the results are indicative of a satisfactory dynamic performance of the dam, even when subjected to severe seismic loading conditions.	en
heal.publisher	ICE PUBL	en
heal.journalName	Geotechnique	en
dc.identifier.doi	10.1680/geot.8.P.028	en
dc.identifier.isi	ISI:000292425400002	en
dc.identifier.volume	61	en
dc.identifier.issue	7	en
dc.identifier.spage	549	en
dc.identifier.epage	563	en