Approximate non-linear dynamic axial response of piles

Michaelides, O; Gazetas, G; Bouckovalas, G; Chrysikou, E

dc.contributor.author	Michaelides, O	en
dc.contributor.author	Gazetas, G	en
dc.contributor.author	Bouckovalas, G	en
dc.contributor.author	Chrysikou, E	en
dc.date.accessioned	2014-03-01T01:13:36Z
dc.date.available	2014-03-01T01:13:36Z
dc.date.issued	1998	en
dc.identifier.issn	0016-8505	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12593
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0032007409&partnerID=40&md5=9223e3ddd41da5ae535da41cc16261f8	en
dc.subject	Dynamics	en
dc.subject	Numerical modelling and analysis	en
dc.subject	Piles	en
dc.subject	Soil/structure interaction	en
dc.subject	Stiffness	en
dc.subject	Vibration	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Approximation theory	en
dc.subject.other	Clay	en
dc.subject.other	Curve fitting	en
dc.subject.other	Damping	en
dc.subject.other	Dynamic response	en
dc.subject.other	Mathematical models	en
dc.subject.other	Piles	en
dc.subject.other	Plasticity	en
dc.subject.other	Shear stress	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	Stiffness	en
dc.subject.other	Vibrations (mechanical)	en
dc.subject.other	Axial dynamic response	en
dc.subject.other	Soil mechanics	en
dc.subject.other	dynamic response	en
dc.subject.other	pile response	en
dc.subject.other	soil/pile interaction	en
dc.title	Approximate non-linear dynamic axial response of piles	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	The axial dynamic response of a single pile in clay is examined within the framework of a Winkler-type approach. Experimental data for the variation of soil shear modulus and hysteretic damping with the amplitude of shear strain and the soil 'plasticity' index are curve-fitted and utilized in simulating in a realistic way the non-linearity of the surrounding soil arising from the stresses induced by the pile. An equivalent radially-inhomogeneous but linearly-hysteretic continuum is established, and the 'springs' and 'dashpots' of the dynamic Winkler model are obtained at each depth by solving analytically the pertinent plane-strain (in z) and axisymmetric (in r) elastodynamic problem. Slippage at the pile-soil interface is also taken into consideration in a simple approximate way. Analytical results are presented to demonstrate the practical significance of soil non-linearity, soil 'plasticity' index and interface slippage in the dynamic stiffness and damping of the pile.	en
heal.publisher	THOMAS TELFORD SERVICES LTD	en
heal.journalName	Geotechnique	en
dc.identifier.isi	ISI:000074578600002	en
dc.identifier.volume	48	en
dc.identifier.issue	1	en
dc.identifier.spage	33	en
dc.identifier.epage	53	en