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Analysis of Site Response and Building Damage Distribution Induced by the 31 October 2002 Earthquake at San Giuliano di Puglia (Italy)
Author(s)
Language
English
Obiettivo Specifico
4T. Sismologia, geofisica e geologia per l'ingegneria sismica
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
2/29 (2013)
Pages (printed)
497-526
Issued date
2013
Subjects
Abstract
This paper concerns the analysis of the site amplification that significantly
influenced the non-uniform damage distribution observed at San Giuliano di
Puglia(Italy)afterthe2002Moliseearthquake(MW=5.7).Infact,thehistorical
coreofthetown,settledonoutcroppingrock,receivedlessdamagethanthemore
recent buildings, founded on a clayey subsoil. Comprehensive geotechnical and
geophysicalinvestigationsallowedadetaileddefinitionofthesubsoilmodel.The
seismicresponseofthesubsoilwasanalyzedthrough2-Dfinite-elementand3-D
spectral-elementmethods.Theaccuracyofsuchmodelswasverifiedbycomparing
the numerical predictions to the aftershocks recorded by a temporary seismic
network.Aftercalibration,theseismicresponsetoasyntheticinputmotionreproducing
the main shock was simulated. The influence of site amplification on the
damage distribution observed was finally interpreted by combining the predicted
variation of ground motion parameters with the structural vulnerability of the
buildings.
influenced the non-uniform damage distribution observed at San Giuliano di
Puglia(Italy)afterthe2002Moliseearthquake(MW=5.7).Infact,thehistorical
coreofthetown,settledonoutcroppingrock,receivedlessdamagethanthemore
recent buildings, founded on a clayey subsoil. Comprehensive geotechnical and
geophysicalinvestigationsallowedadetaileddefinitionofthesubsoilmodel.The
seismicresponseofthesubsoilwasanalyzedthrough2-Dfinite-elementand3-D
spectral-elementmethods.Theaccuracyofsuchmodelswasverifiedbycomparing
the numerical predictions to the aftershocks recorded by a temporary seismic
network.Aftercalibration,theseismicresponsetoasyntheticinputmotionreproducing
the main shock was simulated. The influence of site amplification on the
damage distribution observed was finally interpreted by combining the predicted
variation of ground motion parameters with the structural vulnerability of the
buildings.
Type
article
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PugliaR_ES_2013.pdf
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2.05 MB
Format
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