Soil-pile-bridge seismic interaction: Kinematic and inertial effects .1. Soft soil

Mylonakis, G; Nikolaou, A; Gazetas, G

dc.contributor.author	Mylonakis, G	en
dc.contributor.author	Nikolaou, A	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:46:36Z
dc.date.available	2014-03-01T01:46:36Z
dc.date.issued	1997	en
dc.identifier.issn	0098-8847	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24942
dc.subject	soil	en
dc.subject	bridge	en
dc.subject	pier	en
dc.subject	pile group	en
dc.subject	pile interaction	en
dc.subject	radiation damping	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Geological	en
dc.title	Soil-pile-bridge seismic interaction: Kinematic and inertial effects .1. Soft soil	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A substructuring method has been implemented for the seismic analysis of bridge piers founded on vertical piles and pile groups in multi-layered soil. The method reproduces semi-analytically both the kinematic and inertial soil-structure interaction, in a simple realistic way. Vertical S-wave propagation and the pile-to-pile interplay are treated with sufficient rigor, within the realm of equivalent-linear soil behaviour, while a variety of support conditions of the bridge deck on the pier can be studied with the method. Analyses are performed in both frequency and time domains, with the excitation specified at the surface of the outcropping ('elastic') rock. A parameter study explores the role of soil-structure interaction by elucidating, for typical bridge piers founded on soft soil, the key phenomena and parameters associated with the interplay between seismic excitation, soil profile, pile-foundation, and superstructure. Results illustrate the potential errors from ignoring: (i) the radiation damping generated from the oscillating piles, and (ii) the rotational component of motion at the head of the single pile or the pile-group cap. Results are obtained for accelerations of bridge deck and foundation points, as well as for bending moments along the piles.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS	en
dc.identifier.isi	ISI:A1997WK11600003	en
dc.identifier.volume	26	en
dc.identifier.issue	3	en
dc.identifier.spage	337	en
dc.identifier.epage	359	en