Simplified approach for design of raft foundations against fault rupture. Part II: Soil-structure interaction

Anastasopoulos, I; Gerolymos, N; Gazetas, G; Bransby, MF

dc.contributor.author	Anastasopoulos, I	en
dc.contributor.author	Gerolymos, N	en
dc.contributor.author	Gazetas, G	en
dc.contributor.author	Bransby, MF	en
dc.date.accessioned	2014-03-01T01:29:12Z
dc.date.available	2014-03-01T01:29:12Z
dc.date.issued	2008	en
dc.identifier.issn	1671-3664	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19151
dc.subject	Analytical method	en
dc.subject	Earthquake	en
dc.subject	Fault rupture	en
dc.subject	Raft foundation	en
dc.subject	Soil-structure interaction	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Geological	en
dc.subject.other	Centrifugation	en
dc.subject.other	Finite element method	en
dc.subject.other	Flow interactions	en
dc.subject.other	Pressure	en
dc.subject.other	Research	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	Soils	en
dc.subject.other	Structural dynamics	en
dc.subject.other	Analytical methods	en
dc.subject.other	bedrock depth	en
dc.subject.other	Coefficient of earth pressure at rest	en
dc.subject.other	Critical loads	en
dc.subject.other	Energy-based approach	en
dc.subject.other	Engineering mechanics	en
dc.subject.other	Equilibrium positions	en
dc.subject.other	Fault rupture propagation	en
dc.subject.other	Fault ruptures	en
dc.subject.other	Finite element analysis (FEA)	en
dc.subject.other	Geometric non-linearities	en
dc.subject.other	Heuristic approaches	en
dc.subject.other	Integrated research	en
dc.subject.other	moment equilibrium	en
dc.subject.other	Preliminary design	en
dc.subject.other	raft foundations	en
dc.subject.other	Second orders	en
dc.subject.other	soil strength	en
dc.subject.other	Soil-structure interaction (A1/E1/E12/E13)	en
dc.subject.other	Springer (CO)	en
dc.subject.other	Structure interactions	en
dc.subject.other	Vertical displacements	en
dc.subject.other	Foundations	en
dc.title	Simplified approach for design of raft foundations against fault rupture. Part II: Soil-structure interaction	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s11803-008-0836-5	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s11803-008-0836-5	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	This is the second paper of two, which describe the results of an integrated research effort to develop a four-step simplified approach for design of raft foundations against dip-slip (normal and thrust) fault rupture. The first two steps dealing with fault rupture propagation in the free-field were presented in the companion paper. This paper develops an approximate analytical method to analyze soil-foundation-structure interaction (SFSI), involving two additional phenomena: (i) fault rupture diversion (Step 3); and (ii) modification of the vertical displacement profile (Step 4). For the first phenomenon (Step 3), an approximate energy-based approach is developed to estimate the diversion of a fault rupture due to presence of a raft foundation. The normalized critical load for complete diversion is shown to be a function of soil strength, coefficient of earth pressure at rest, bedrock depth, and the horizontal position of the foundation relative to the outcropping fault rupture. For the second phenomenon (Step 4), a heuristic approach is proposed, which ""scans"" through possible equilibrium positions to detect the one that best satisfies force and moment equilibrium. Thus, we account for the strong geometric nonlinearities that govern this interaction, such as uplifting and second order (P-Δ) effects. Comparisons with centrifuge-validated finite element analyses demonstrate the efficacy of the method. Its simplicity makes possible its utilization for preliminary design. © 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/s11803-008-0836-5	en
dc.identifier.isi	ISI:000257328100005	en
dc.identifier.volume	7	en
dc.identifier.issue	2	en
dc.identifier.spage	165	en
dc.identifier.epage	179	en