A new methodology to determine elastic displacement spectra in the near-fault region

Maniatakis, C; Spyrakos, CC

dc.contributor.author	Maniatakis, C	en
dc.contributor.author	Spyrakos, CC	en
dc.date.accessioned	2014-03-01T02:07:23Z
dc.date.available	2014-03-01T02:07:23Z
dc.date.issued	2012	en
dc.identifier.issn	02677261	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29554
dc.subject.other	Accelerograms	en
dc.subject.other	Damping correction	en
dc.subject.other	Design philosophy	en
dc.subject.other	Directivity	en
dc.subject.other	Displacement demand	en
dc.subject.other	Earthquake engineering design	en
dc.subject.other	Earthquake magnitudes	en
dc.subject.other	Elastic displacements	en
dc.subject.other	Eurocode 8	en
dc.subject.other	Near-fault	en
dc.subject.other	Peak ground displacement	en
dc.subject.other	Peak ground velocity	en
dc.subject.other	Seismic activity	en
dc.subject.other	Spectral amplitude	en
dc.subject.other	Statistical dispersion	en
dc.subject.other	Zero damping	en
dc.subject.other	Civil engineering	en
dc.subject.other	Damping	en
dc.subject.other	Earthquakes	en
dc.subject.other	design method	en
dc.subject.other	displacement	en
dc.subject.other	earthquake engineering	en
dc.subject.other	earthquake magnitude	en
dc.subject.other	elastic property	en
dc.subject.other	fault	en
dc.subject.other	seismic attenuation	en
dc.subject.other	spectral analysis	en
dc.subject.other	Europe	en
dc.title	A new methodology to determine elastic displacement spectra in the near-fault region	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.soildyn.2011.10.005	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.soildyn.2011.10.005	en
heal.publicationDate	2012	en
heal.abstract	The evaluation of the displacement demand especially at small distances from the causative fault, in the so-called near-source region, is a subject of particular interest for earthquake engineering design, in the light of the growing application of the displacement-based design philosophy. This study presents a new methodology to determine the elastic displacement spectra using a sample of near-fault records from small-to-moderate magnitude earthquakes, typical of the seismic activity in Europe. The displacement spectrum is developed using near-fault attenuation relationships available in literature for peak ground velocity that is less sensitive in the procedures applied to correct the accelerograms. Also, the distance from the causative fault and the type of directivity are taken into consideration. The prevailing period corresponds to the maxima of the displacement spectra for zero damping and is used to normalize the spectra, leading to significant decrease of the statistical dispersion. The average bi-normalized spectrum, in terms of the peak ground displacement dg,max and the dominant period Td-p, appears to be slightly affected by the soil category and earthquake magnitude. A correlation between the damping correction factor η and the normalized period T/Td-p is detected and the applicability of several provisions of the current version of Eurocode 8 is examined, including characteristic periods and spectral amplitudes. © 2011.	en
heal.journalName	Soil Dynamics and Earthquake Engineering	en
dc.identifier.doi	10.1016/j.soildyn.2011.10.005	en
dc.identifier.volume	35	en
dc.identifier.spage	41	en
dc.identifier.epage	58	en