Nonlinear behavior of single piles vibrating vertically

Zha, J-X; Gazetas, G

dc.contributor.author	Zha, J-X	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T02:51:45Z
dc.date.available	2014-03-01T02:51:45Z
dc.date.issued	2008	en
dc.identifier.issn	08950563	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35629
dc.subject.other	Contact properties	en
dc.subject.other	Earthquake engineering	en
dc.subject.other	Far field	en
dc.subject.other	Field test	en
dc.subject.other	Geotechnical parameters	en
dc.subject.other	Interaction factor	en
dc.subject.other	Linear analysis	en
dc.subject.other	Mohr-Coulomb strength criterion	en
dc.subject.other	Near fields	en
dc.subject.other	Non-linear stress-strain	en
dc.subject.other	Nonlinear behavior	en
dc.subject.other	Nonlinear soil behavior	en
dc.subject.other	Parametric study	en
dc.subject.other	Pile group effect	en
dc.subject.other	Pile-soil interface	en
dc.subject.other	Radiation damping	en
dc.subject.other	Semi-analytical	en
dc.subject.other	Shear modulus	en
dc.subject.other	Single piles	en
dc.subject.other	Soil dynamics	en
dc.subject.other	Soil parameters	en
dc.subject.other	Torsional loadings	en
dc.subject.other	Civil engineering	en
dc.subject.other	Dynamics	en
dc.subject.other	Earthquakes	en
dc.subject.other	Engineering	en
dc.subject.other	Engineering geology	en
dc.subject.other	Geologic models	en
dc.subject.other	Geotechnical engineering	en
dc.subject.other	Piles	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	Soil testing	en
dc.subject.other	Soils	en
dc.subject.other	Boundary element method	en
dc.title	Nonlinear behavior of single piles vibrating vertically	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1061/40975(318)141	en
heal.identifier.secondary	http://dx.doi.org/10.1061/40975(318)141	en
heal.publicationDate	2008	en
heal.abstract	A numerical method is presented for analyzing the nonlinear behavior of single piles subjected to harmonic vertical or torsional loading. The method combines the finite element method accounting for nonlinear soil behavior in the near field and a semi-analytical formulation for radiation damping in the far field. Nonlinear stress-strain characteristics of soil are considered with a shear modulus degradation model used in soil dynamics and earthquake engineering. Mohr-Coulomb strength criterion is used to approximate the contact property at the pile-soil interface. The method is simplified but versatile, and the soil parameters required are relatively few being all the standard geotechnical parameters. The comparisons between the predictions and the results from field tests and a boundary element method are made to verify the present method. A parametric study indicates that the linear analysis overestimates both the stiffness of piles and the interaction factor for the pile group effect. © 2008 ASCE.	en
heal.journalName	Geotechnical Special Publication	en
dc.identifier.doi	10.1061/40975(318)141	en
dc.identifier.issue	181	en