Caisson Foundations Subjected to Reverse Fault Rupture: Centrifuge Testing and Numerical Analysis

Loli, M; Anastasopoulos, I; Bransby, MF; Ahmed, W; Gazetas, G

dc.contributor.author	Loli, M	en
dc.contributor.author	Anastasopoulos, I	en
dc.contributor.author	Bransby, MF	en
dc.contributor.author	Ahmed, W	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:35:23Z
dc.date.available	2014-03-01T01:35:23Z
dc.date.issued	2011	en
dc.identifier.issn	1090-0241	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21023
dc.subject	3D analysis	en
dc.subject	Caisson foundations	en
dc.subject	Centrifuge modeling	en
dc.subject	Finite elements	en
dc.subject	Soil-caisson-rupture interaction	en
dc.subject	Tectonic deformation	en
dc.subject	Thrust fault	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	3D analysis	en
dc.subject.other	Caisson foundations	en
dc.subject.other	Centrifuge modeling	en
dc.subject.other	Finite Element	en
dc.subject.other	Soil-caisson-rupture interaction	en
dc.subject.other	Tectonic deformation	en
dc.subject.other	Thrust faults	en
dc.subject.other	Caissons	en
dc.subject.other	Centrifugation	en
dc.subject.other	Centrifuges	en
dc.subject.other	Deformation	en
dc.subject.other	Geologic models	en
dc.subject.other	Hydraulic structures	en
dc.subject.other	Numerical analysis	en
dc.subject.other	Numerical methods	en
dc.subject.other	Pressure vessels	en
dc.subject.other	Seismic design	en
dc.subject.other	Tectonics	en
dc.subject.other	Three dimensional	en
dc.subject.other	Underwater foundations	en
dc.subject.other	Foundations	en
dc.subject.other	caisson	en
dc.subject.other	centrifugal model test	en
dc.subject.other	cohesionless soil	en
dc.subject.other	earthquake damage	en
dc.subject.other	failure analysis	en
dc.subject.other	fault propagation	en
dc.subject.other	faulting	en
dc.subject.other	finite element method	en
dc.subject.other	foundation	en
dc.subject.other	mathematical analysis	en
dc.subject.other	outcrop	en
dc.subject.other	reverse fault	en
dc.subject.other	rigidity	en
dc.subject.other	rupture	en
dc.subject.other	seismic design	en
dc.subject.other	soil-structure interaction	en
dc.subject.other	tectonics	en
dc.subject.other	thrust fault	en
dc.title	Caisson Foundations Subjected to Reverse Fault Rupture: Centrifuge Testing and Numerical Analysis	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)GT.1943-5606.0000512	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0000512	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Recent large-magnitude (M > 7) earthquakes have caused numerous failures induced by surface faulting, demonstrating the need to account for tectonic deformation in seismic design. Thanks to their usually high rigidity, embedded (e.g., caisson) foundations may divert the fault rupture and lead to favorable performance, whereas surface or piled foundations may fail. We present a series of centrifuge model tests to investigate the response of caisson foundations embedded in a cohesionless soil stratum, the base of which is subjected to reverse faulting. We elucidate the interplay between the propagating fault rupture and the caisson, focusing on the role of the location of the outcropping rupture relative to the caisson. The rigid-body of the caisson causes diversion and/or bifurcation of the shear localization, which is forced to develop preferentially around the edges of the caisson. The observed failure pattern and the consequent caisson response depend strongly on the exact caisson position relative to the fault. We employed three-dimensional (3D) finite-element (FE) modeling and validated it by comparing to centrifuge test results. The numerical method captures the general interaction mechanisms, showing satisfactory (if not always perfect) agreement with experiments. We then employ the validated numerical method in a parametric investigation, providing further insight into the different possible modes of foundation response. DOI: 10.1061/(ASCE)GT.1943-5606.0000512. (C) 2011 American Society of Civil Engineers.	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.1943-5606.0000512	en
dc.identifier.isi	ISI:000296509600007	en
dc.identifier.volume	137	en
dc.identifier.issue	10	en
dc.identifier.spage	914	en
dc.identifier.epage	925	en