Seismic response of single-column bent on pile: Evidence of beneficial role of pile and soil inelasticity

Gerolymos, N; Drosos, V; Gazetas, G

dc.contributor.author	Gerolymos, N	en
dc.contributor.author	Drosos, V	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:31:51Z
dc.date.available	2014-03-01T01:31:51Z
dc.date.issued	2009	en
dc.identifier.issn	1570-761X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19957
dc.subject	Dynamic soil-structure interaction	en
dc.subject	Extended pile shaft-supported bridge	en
dc.subject	Seismic performance measures	en
dc.subject	Soil and pile inelasticity	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Dashpots	en
dc.subject.other	Drift ratios	en
dc.subject.other	Ductility demands	en
dc.subject.other	Dynamic soil-structure interaction	en
dc.subject.other	Extended pile shaft-supported bridge	en
dc.subject.other	Finite element codes	en
dc.subject.other	Kobe earthquakes	en
dc.subject.other	Non-linear behaviours	en
dc.subject.other	Performance measures	en
dc.subject.other	Pile-soil interactions	en
dc.subject.other	Plastic hinges	en
dc.subject.other	Radiation damping	en
dc.subject.other	Seismic codes	en
dc.subject.other	Seismic excitations	en
dc.subject.other	Seismic loadings	en
dc.subject.other	Seismic performance measures	en
dc.subject.other	Structural nonlinearities	en
dc.subject.other	Winkler	en
dc.subject.other	Earthquakes	en
dc.subject.other	Geologic models	en
dc.subject.other	Model structures	en
dc.subject.other	Seismic waves	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	Soils	en
dc.subject.other	Piles	en
dc.subject.other	elasticity	en
dc.subject.other	height	en
dc.subject.other	numerical model	en
dc.subject.other	pile	en
dc.subject.other	seismic response	en
dc.subject.other	soil profile	en
dc.subject.other	soil-structure interaction	en
dc.subject.other	stiffness	en
dc.subject.other	structural response	en
dc.title	Seismic response of single-column bent on pile: Evidence of beneficial role of pile and soil inelasticity	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10518-009-9111-z	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10518-009-9111-z	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	While seismic codes do not allow plastic deformation of piles, the Kobe earthquake has shown that limited structural yielding and cracking of piles may not be always detrimental. As a first attempt to investigate the consequences of pile yielding in the response of a pile-column supported bridge structure, this paper explores the soil-pile-bridge pier interaction to seismic loading, with emphasis on structural nonlinearity. The pile-soil interaction is modeled through distributed nonlinear Winkler-type springs and dashpots. Numerical analysis is performed with a constitutive model (Gerolymos and Gazetas 2005a, Soils Found 45(3):147-159, Gerolymos and Gazetas 2005b, Soils Found 45(4):119-132, Gerolymos and Gazetas 2006a, Soil Dyn Earthq Eng 26(5):363-376) materialized in the OpenSees finite element code (Mazzoni et al. 2005, OpenSees command language manual, p 375) which can simulate: the nonlinear behaviour of both pile and soil; the possible separation and gapping between pile and soil; radiation damping; loss of stiffness and strength in pile and soil. The model is applied to the analysis of pile-column supported bridge structures, focusing on the influence of soil compliance, intensity of seismic excitation, pile diameter, above-ground height of the pile, and above or below ground development of plastic hinge, on key performance measures of the pier as is: the displacement (global) and curvature (local) ductility demands and the maximum drift ratio. It is shown that kinematic expressions for performance measure parameters may lead to erroneous results when soil-structure interaction is considered. © 2009 Springer Science+Business Media B.V.	en
heal.publisher	SPRINGER	en
heal.journalName	Bulletin of Earthquake Engineering	en
dc.identifier.doi	10.1007/s10518-009-9111-z	en
dc.identifier.isi	ISI:000265088800012	en
dc.identifier.volume	7	en
dc.identifier.issue	2	en
dc.identifier.spage	547	en
dc.identifier.epage	573	en