Soil-structure-water interaction of intake-outlet towers allowed to uplift

Spyrakos, CC; Xu, C

dc.contributor.author	Spyrakos, CC	en
dc.contributor.author	Xu, C	en
dc.date.accessioned	2014-03-01T01:13:24Z
dc.date.available	2014-03-01T01:13:24Z
dc.date.issued	1997	en
dc.identifier.issn	0267-7261	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12448
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0042045387&partnerID=40&md5=d9191f4eecd560fcf4e7602072ccd3eb	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Deflection (structures)	en
dc.subject.other	Dynamic response	en
dc.subject.other	Earthquake resistance	en
dc.subject.other	Equations of motion	en
dc.subject.other	Foundations	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Mathematical models	en
dc.subject.other	Nonlinear equations	en
dc.subject.other	Pressure effects	en
dc.subject.other	Structural design	en
dc.subject.other	Towers	en
dc.subject.other	Foundation uplift	en
dc.subject.other	Moments	en
dc.subject.other	Seismic response	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	hydrodynamics	en
dc.subject.other	seismic analysis	en
dc.subject.other	soil/structure interaction	en
dc.title	Soil-structure-water interaction of intake-outlet towers allowed to uplift	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A procedure that can be used for preliminary seismic analysis of intake-outlet towers including soil-structure-water interaction is developed. The formulation also considers the effect of partial soil-foundation separation, a phenomenon of considerable interest for the design of such systems that has not been addressed in the literature. The hydrodynamic pressure of the water is accounted for through added masses given in concise closed-form expressions for easy use in analysis and design. The nonlinear equations of motion, based on foundation-soil bond conditions, are solved numerically. The effects of soil-structure-water interaction are evaluated for a representative intake-outlet tower. Parametric studies are also conducted in the presence and absence of surrounding and contained water for typical cases of soil conditions and tower height-foundation width ratios. The results indicate that hydrodynamic effects are significant and cause an increase in deflections, moments and shears and a decrease in foundation rotation. The study shows that for short towers, foundation uplift is unlikely to occur. On the contrary for slender towers, uplift is more likely to appear, especially for foundations supported by stiff soil, causing significant decrease in moments and deflections. © 1997 Elsevier Science Limited. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Soil Dynamics and Earthquake Engineering	en
dc.identifier.isi	ISI:A1997WH67200006	en
dc.identifier.volume	16	en
dc.identifier.issue	2	en
dc.identifier.spage	151	en
dc.identifier.epage	159	en