Winkler model for lateral response of rigid caisson foundations in linear soil

Gerolymos, N; Gazetas, G

dc.contributor.author	Gerolymos, N	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:25:30Z
dc.date.available	2014-03-01T01:25:30Z
dc.date.issued	2006	en
dc.identifier.issn	0267-7261	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17688
dc.subject	Caisson	en
dc.subject	Elasticity	en
dc.subject	Kinematic loading	en
dc.subject	Lateral loading	en
dc.subject	Seismic loading	en
dc.subject	Winkler model	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Caissons	en
dc.subject.other	Dynamic loads	en
dc.subject.other	Dynamic response	en
dc.subject.other	Elasticity	en
dc.subject.other	Finite element method	en
dc.subject.other	Foundations	en
dc.subject.other	Kinematics	en
dc.subject.other	Mathematical models	en
dc.subject.other	Rigidity	en
dc.subject.other	Seismic waves	en
dc.subject.other	Shear waves	en
dc.subject.other	Soil mechanics	en
dc.subject.other	Kinematic loading	en
dc.subject.other	Lateral loading	en
dc.subject.other	Rigid Caisson foundations	en
dc.subject.other	Seismic loading	en
dc.subject.other	Winkler model	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	caisson	en
dc.subject.other	earthquake engineering	en
dc.subject.other	foundation	en
dc.subject.other	seismic response	en
dc.title	Winkler model for lateral response of rigid caisson foundations in linear soil	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.soildyn.2005.12.003	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.soildyn.2005.12.003	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	A generalized spring multi-Winkler model is developed for the static and dynamic response of rigid caisson foundations of circular, square, or rectangular plan, embedded in a homogeneous elastic. The model, referred to as a four-spring Winkler model, uses four types of springs to model the interaction between soil and caisson: Lateral translational springs distributed along the length of the caisson relating horizontal displacement at a particular depth to lateral soil resistance (resultant of normal and shear tractions on the caisson periphery); similarly distributed rotational springs relating rotation of the caisson to the moment increment developed by the vertical shear tractions on the caisson periphery; and concentrated translational and rotational springs relating, respectively, resultant horizontal shear force with displacement, and overturning moment with rotation, at the base of the caisson. For the dynamic problem each spring is accompanied by an associated dashpot in parallel. Utilising elastodynamic theoretical available in the literature results for rigid embedded foundations, closed-form expressions are derived for the various springs and dashpots of caissons with rectangular and circular plan shape. The response of a caisson to lateral static and dynamic loading at its top, and to kinematically-induced loading arising from vertical seismic shear wave propagation, is then studied parametrically. Comparisons with results from 3D finite element analysis and other available theoretical methods demonstrate the reliability of the model, the need for which arises from its easy extension to multi-layered and nonlinear inelastic soil. Such an extension is presented in the companion papers by the authors [Gerolymos N, Gazetas G. Development of Winkler model for lateral static and dynamic response of caisson foundations with soil and interface nonlinearities. Soil Dyn Earthq Eng. Submitted companion paper; Gerolymos N, Gazetas G. Static and dynamic response of massive caisson foundations with soil and interface nonlinearities - validation and results. Soil Dyn Earthq Eng. Submitted companion paper.]. © 2006 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Soil Dynamics and Earthquake Engineering	en
dc.identifier.doi	10.1016/j.soildyn.2005.12.003	en
dc.identifier.isi	ISI:000236790500002	en
dc.identifier.volume	26	en
dc.identifier.issue	5	en
dc.identifier.spage	347	en
dc.identifier.epage	361	en