Insight into seismic earth and water pressures against caisson quay walls

Dakoulas, P; Gazetas, G

dc.contributor.author	Dakoulas, P	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:28:41Z
dc.date.available	2014-03-01T01:28:41Z
dc.date.issued	2008	en
dc.identifier.issn	0016-8505	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18919
dc.subject	Case history	en
dc.subject	Earth pressure	en
dc.subject	Earthquakes	en
dc.subject	Liquefaction	en
dc.subject	Numerical modelling	en
dc.subject	Retaining walls	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Constitutive models	en
dc.subject.other	Earthquake effects	en
dc.subject.other	Elastoplasticity	en
dc.subject.other	Liquefaction	en
dc.subject.other	Numerical methods	en
dc.subject.other	Plastic deformation	en
dc.subject.other	Retaining walls	en
dc.subject.other	Rotation	en
dc.subject.other	Earth pressure	en
dc.subject.other	Seismic deformation	en
dc.subject.other	Water pressures	en
dc.subject.other	Quay walls	en
dc.subject.other	caisson	en
dc.subject.other	earth pressure	en
dc.subject.other	earthquake	en
dc.subject.other	liquefaction	en
dc.subject.other	numerical model	en
dc.subject.other	retaining wall	en
dc.subject.other	rotation	en
dc.subject.other	Asia	en
dc.subject.other	Eurasia	en
dc.subject.other	Far East	en
dc.subject.other	Honshu	en
dc.subject.other	Hyogo	en
dc.subject.other	Japan	en
dc.subject.other	Kinki	en
dc.subject.other	Kobe	en
dc.subject.other	Rokko Island	en
dc.title	Insight into seismic earth and water pressures against caisson quay walls	en
heal.type	journalArticle	en
heal.identifier.primary	10.1680/geot.2008.58.2.95	en
heal.identifier.secondary	http://dx.doi.org/10.1680/geot.2008.58.2.95	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	Motivated by the need to explain the large displacement and rotation that numerous caisson-type quay walls suffered in the port of Kobe during the devastating 1995 earthquake, a detailed numerical analysis is presented for the response of such a wall from Rokko Island. Utilising the Pastor - Zienkiewicz elastoplastic constitutive model, an effective stress dynamic analysis is performed using as input the accelerogram recorded 32 m below the ground surface in the nearby Port Island. The evolution during shaking of lateral displacements, plastic strains and pore water pressures sheds some light on the complex interplay of several simultaneously occurring phenomena: the development of oscillatory inertia forces on the wall, in phase or out of phase with the backfill soil and water pressures; the simple-shear seismic deformation of the soil and the ensuing initial development of positive excess pore water pressures in the backfill and the foundation soil; the extensional deformation developing in the 'active wedge' behind the wall, with the ensuing generation of negative excess pore water pressures; and the continuous dissipation and redistribution of water pressures. The conventional generalised Mononobe - Okabe theory is also reviewed, and extensive comparisons are made with the numerically computed effective and water pressures against the wall. Finally, a surprising role of the relative density of rubble behind the wall is highlighted.	en
heal.publisher	THOMAS TELFORD PUBLISHING	en
heal.journalName	Geotechnique	en
dc.identifier.doi	10.1680/geot.2008.58.2.95	en
dc.identifier.isi	ISI:000253013300002	en
dc.identifier.volume	58	en
dc.identifier.issue	2	en
dc.identifier.spage	95	en
dc.identifier.epage	111	en