Seismic behavior of batter piles: Elastic response

Giannakou, A; Gerolymos, N; Gazetas, G; Tazoh, T; Anastasopoulos, I

dc.contributor.author	Giannakou, A	en
dc.contributor.author	Gerolymos, N	en
dc.contributor.author	Gazetas, G	en
dc.contributor.author	Tazoh, T	en
dc.contributor.author	Anastasopoulos, I	en
dc.date.accessioned	2014-03-01T01:34:31Z
dc.date.available	2014-03-01T01:34:31Z
dc.date.issued	2010	en
dc.identifier.issn	1090-0241	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20749
dc.subject	Batter piles	en
dc.subject	Inertial response	en
dc.subject	Kinematic response	en
dc.subject	Lateral loading	en
dc.subject	Numerical modeling	en
dc.subject	Seismic response	en
dc.subject	Soil-structure interaction	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Accelerograms	en
dc.subject.other	Base excitation	en
dc.subject.other	Batter piles	en
dc.subject.other	Elastic behavior	en
dc.subject.other	Elastic response	en
dc.subject.other	Finite element modeling	en
dc.subject.other	Frequency characteristic	en
dc.subject.other	Ground deformations	en
dc.subject.other	Inertial response	en
dc.subject.other	Lateral loading	en
dc.subject.other	Lateral stiffness	en
dc.subject.other	Layered soils	en
dc.subject.other	Numerical modeling	en
dc.subject.other	Overturning moment	en
dc.subject.other	Parametric analysis	en
dc.subject.other	Pile groups	en
dc.subject.other	Seismic behavior	en
dc.subject.other	Seismic loadings	en
dc.subject.other	Shear force	en
dc.subject.other	SHORT structures	en
dc.subject.other	Structural systems	en
dc.subject.other	Structure response	en
dc.subject.other	Deformation	en
dc.subject.other	Kinematics	en
dc.subject.other	Loading	en
dc.subject.other	Numerical methods	en
dc.subject.other	Seismic response	en
dc.subject.other	Soils	en
dc.subject.other	Stiffness	en
dc.subject.other	Three dimensional	en
dc.subject.other	Piles	en
dc.subject.other	deformation	en
dc.subject.other	elasticity	en
dc.subject.other	finite element method	en
dc.subject.other	loading	en
dc.subject.other	numerical model	en
dc.subject.other	parameterization	en
dc.subject.other	pile	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	three-dimensional modeling	en
dc.title	Seismic behavior of batter piles: Elastic response	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)GT.1943-5606.0000337	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0000337	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Several aspects of the seismic response of groups containing nonvertical piles are studied, including the lateral pile-head stiffnesses, the ""kinematic"" pile deformation, and the ""inertial"" soil-pile-structure response. A key goal is to explore the conditions under which the presence of batter piles is beneficial, indifferent, or detrimental. Parametric analyses are carried out using three-dimensional finite-element modeling, assuming elastic behavior of soil, piles, and superstructure. The model is first used to obtain the lateral stiffnesses of single batter piles and to show that its results converge to the available solutions from the literature. Then, real accelerograms covering a broad range of frequency characteristics are employed as base excitation of simple fixed-head two-pile group configurations, embedded in homogeneous, inhomogeneous, and layered soil profiles, while supporting very tall or very short structures. Five pile inclinations are considered while the corresponding vertical-pile group results serve as reference. It is found that in purely kinematic seismic loading, batter piles tend to confirm their negative reputation, as had also been found recently for a group subjected to static horizontal ground deformation. However, the total (kinematic plus inertial) response of structural systems founded on groups of batter piles offers many reasons for optimism. Batter piles may indeed be beneficial (or detrimental) depending on, among other parameters, the relative size of the overturning moment versus the shear force transmitted onto them from the superstructure. © 2010 ASCE.	en
heal.publisher	ASCE-AMER SOC CIVIL ENGINEERS	en
heal.journalName	Journal of Geotechnical and Geoenvironmental Engineering	en
dc.identifier.doi	10.1061/(ASCE)GT.1943-5606.0000337	en
dc.identifier.isi	ISI:000280942400003	en
dc.identifier.volume	136	en
dc.identifier.issue	9	en
dc.identifier.spage	1187	en
dc.identifier.epage	1199	en