Design of bridges against large tectonic deformation

Anastasopoulos, I; Gazetas, G; Drosos, V; Georgarakos, T; Kourkoulis, R

dc.contributor.author	Anastasopoulos, I	en
dc.contributor.author	Gazetas, G	en
dc.contributor.author	Drosos, V	en
dc.contributor.author	Georgarakos, T	en
dc.contributor.author	Kourkoulis, R	en
dc.date.accessioned	2014-03-01T01:28:07Z
dc.date.available	2014-03-01T01:28:07Z
dc.date.issued	2008	en
dc.identifier.issn	1671-3664	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18717
dc.subject	bridge	en
dc.subject	caisson foundation	en
dc.subject	earthquake	en
dc.subject	fault rupture	en
dc.subject	finite elements	en
dc.subject	pile group	en
dc.subject	soil-structure interaction	en
dc.subject	viaduct	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Geological	en
dc.subject.other	Bearings (structural)	en
dc.subject.other	Caissons	en
dc.subject.other	Deformation	en
dc.subject.other	Earthquakes	en
dc.subject.other	Flow interactions	en
dc.subject.other	Foundations	en
dc.subject.other	Geologic models	en
dc.subject.other	Hydraulic structures	en
dc.subject.other	Piles	en
dc.subject.other	Pressure vessels	en
dc.subject.other	Seismic design	en
dc.subject.other	Seismology	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	Soils	en
dc.subject.other	Tectonics	en
dc.subject.other	Underwater foundations	en
dc.subject.other	caisson foundation	en
dc.subject.other	fault rupture	en
dc.subject.other	finite elements	en
dc.subject.other	pile group	en
dc.subject.other	soil-structure interaction	en
dc.subject.other	viaduct	en
dc.subject.other	Structural design	en
dc.title	Design of bridges against large tectonic deformation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s11803-008-1001-x	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s11803-008-1001-x	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The engineering community has devoted much effort to understanding the response of soil-structure systems to seismic ground motions, but little attention to the effects of an outcropping fault offset. The 1999 earthquakes of Turkey and Taiwan, offering a variety of case histories of structural damage due to faulting, have (re)fueled the interest on the subject. This paper presents a methodology for design of bridges against tectonic deformation. The problem is decoupled in two analysis steps: the first (at the local level) deals with the response of a single pier and its foundation to fault rupture propagating through the soil, and the superstructure is modeled in a simplified manner; and the second (at the global level) investigates detailed models of the superstructure subjected to the support (differential) displacements of Step 1. A parametric study investigates typical models of viaduct and overpass bridges, founded on piles or caissons. Fixed-head piled foundations are shown to be rather vulnerable to faulting-induced deformation. End-bearing piles in particular are unable to survive bedrock offsets exceeding 10 cm. Floating piles perform better, and if combined with hinged pile-to-cap connections, they could survive much larger offsets. Soil resilience is beneficial in reducing pile distress. Caisson foundations are almost invariably successful. Statically-indeterminate superstructures are quite vulnerable, while statically-determinate are insensitive (allowing differential displacements and rotations without suffering any distress). For large-span cantilever- construction bridges, where a statically determinate system is hardly an option, inserting resilient seismic isolation bearings is advantageous as long as ample seating can prevent the deck from falling off the supports. An actual application of the developed method is presented for a major bridge, demonstrating the feasibility of design against tectonic deformation. © 2008 Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag GmbH.	en
heal.publisher	SPRINGER	en
heal.journalName	Earthquake Engineering and Engineering Vibration	en
dc.identifier.doi	10.1007/s11803-008-1001-x	en
dc.identifier.isi	ISI:000262725600004	en
dc.identifier.volume	7	en
dc.identifier.issue	4	en
dc.identifier.spage	345	en
dc.identifier.epage	368	en