Effects of near-fault ground shaking on sliding systems

Gazetas, G; Garini, E; Anastasopoulos, I; Georgarakos, T

dc.contributor.author	Gazetas, G	en
dc.contributor.author	Garini, E	en
dc.contributor.author	Anastasopoulos, I	en
dc.contributor.author	Georgarakos, T	en
dc.date.accessioned	2014-03-01T01:30:18Z
dc.date.available	2014-03-01T01:30:18Z
dc.date.issued	2009	en
dc.identifier.issn	1090-0241	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19537
dc.subject	Asymmetry	en
dc.subject	Ground motion	en
dc.subject	Seismic effects	en
dc.subject	Sliding	en
dc.subject	Symmetry	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Accelerograms	en
dc.subject.other	Critical acceleration	en
dc.subject.other	Design charts	en
dc.subject.other	Directivity	en
dc.subject.other	Frictional contact	en
dc.subject.other	Ground motions	en
dc.subject.other	Ground-shaking	en
dc.subject.other	Inclined planes	en
dc.subject.other	Near-fault	en
dc.subject.other	Northridge	en
dc.subject.other	Numerical studies	en
dc.subject.other	Parallel excitation	en
dc.subject.other	Rigid block	en
dc.subject.other	Seismic effect	en
dc.subject.other	Seismic records	en
dc.subject.other	Sliding displacements	en
dc.subject.other	Sliding systems	en
dc.subject.other	Statistical correlation	en
dc.subject.other	Step effect	en
dc.subject.other	Vertical component	en
dc.subject.other	Machinery	en
dc.subject.other	Seismology	en
dc.subject.other	asymmetry	en
dc.subject.other	displacement	en
dc.subject.other	ground motion	en
dc.subject.other	numerical model	en
dc.subject.other	peak acceleration	en
dc.subject.other	seismicity	en
dc.subject.other	sensitivity analysis	en
dc.subject.other	shaking table test	en
dc.subject.other	site effect	en
dc.subject.other	sliding	en
dc.subject.other	symmetry	en
dc.subject.other	Anas	en
dc.title	Effects of near-fault ground shaking on sliding systems	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)GT.1943-5606.0000174	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0000174	en
heal.identifier.secondary	018912QGT	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	A numerical study is presented for a rigid block supported through a frictional contact surface on a horizontal or an inclined plane, and subjected to horizontal or slope-parallel excitation. The latter is described with idealized pulses and near-fault seismic records strongly influenced by forward-directivity or fling-step effects (from Northridge, Kobe, Kocaeli, Chi-Chi, Aegion). In addition to the well known dependence of the resulting block slippage on variables such as the peak base velocity, the peak base acceleration, and the critical acceleration ratio, our study has consistently and repeatedly revealed a profound sensitivity of both maximum and residual slippage: (1) on the sequence and even the details of the pulses contained in the excitation and (2) on the direction (+ or -) in which the shaking of the inclined plane is imposed. By contrast, the slippage is not affected to any measurable degree by even the strongest vertical components of the accelerograms. Moreover, the slippage from a specific record may often be poorly correlated with its Arias intensity. These findings may contradict some of the prevailing beliefs that emanate from statistical correlation studies. The upper-bound sliding displacements from near-fault excitations may substantially exceed the values obtained from some of the currently available design charts. © 2009 ASCE.	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.1943-5606.0000174	en
dc.identifier.isi	ISI:000272181800013	en
dc.identifier.volume	135	en
dc.identifier.issue	12	en
dc.identifier.spage	1906	en
dc.identifier.epage	1921	en