Investigation of the dynamic response of rigid footings on tensionless Winkler foundation

Psycharis, IN

dc.contributor.author	Psycharis, IN	en
dc.date.accessioned	2014-03-01T01:28:42Z
dc.date.available	2014-03-01T01:28:42Z
dc.date.issued	2008	en
dc.identifier.issn	0267-7261	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18930
dc.subject	Earthquake response	en
dc.subject	Footings	en
dc.subject	Foundation	en
dc.subject	Harmonic response	en
dc.subject	Rocking	en
dc.subject	Uplift	en
dc.subject	Winkler foundation	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Bearing capacity	en
dc.subject.other	Damping	en
dc.subject.other	Dynamic response	en
dc.subject.other	Safety factor	en
dc.subject.other	Seismic response	en
dc.subject.other	Stiffness	en
dc.subject.other	Earthquake response	en
dc.subject.other	Footings	en
dc.subject.other	Harmonic response	en
dc.subject.other	Winkler foundation	en
dc.subject.other	Foundations	en
dc.subject.other	bearing capacity	en
dc.subject.other	damping	en
dc.subject.other	dynamic response	en
dc.subject.other	footing	en
dc.subject.other	rigidity	en
dc.subject.other	seismic response	en
dc.subject.other	soil-structure interaction	en
dc.subject.other	stiffness	en
dc.subject.other	structural response	en
dc.subject.other	Winkler foundation	en
dc.title	Investigation of the dynamic response of rigid footings on tensionless Winkler foundation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.soildyn.2007.07.010	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.soildyn.2007.07.010	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The dynamic response of a rigid footing resting on an elastic tensionless Winkler foundation is examined. A parametric investigation, concerning the effect of the main parameters on the response, is performed for harmonic excitation. The parameters examined include the stiffness and the damping of the foundation, the excitation frequency and the superstructure characteristics and loads. The maximum rocking response, the minimum length of contact after uplift, the maximum stress developed at the soil and the factor of safety with respect to the bearing capacity of the soil are used to measure the effect of each dimensionless parameter. An example for earthquake excitation is also given for a plane frame. The results are compared to the ones of a simplified static approach based on the maximum values of the applied loads, similarly to the procedure that is usually applied in practice. The results show that the static approach can predict the response satisfactorily if resonance does not happen, if the stiffness of the foundation is not large compared to the stiffness of the superstructure and if the dynamic part of the axial force of the column is not large; in these cases, it may underestimate or overestimate the response significantly, depending on the sign of the dynamic axial force that is considered. (C) 2007 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.2007.07.010	en
dc.identifier.isi	ISI:000256120000005	en
dc.identifier.volume	28	en
dc.identifier.issue	7	en
dc.identifier.spage	577	en
dc.identifier.epage	591	en