Developing efficient scalar and vector intensity measures for IDA capacity estimation by incorporating elastic spectral shape information

Vamvatsikos, D; Cornell, CA

dc.contributor.author	Vamvatsikos, D	en
dc.contributor.author	Cornell, CA	en
dc.date.accessioned	2014-03-01T01:22:10Z
dc.date.available	2014-03-01T01:22:10Z
dc.date.issued	2005	en
dc.identifier.issn	0098-8847	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16475
dc.subject	Capacity	en
dc.subject	Incremental dynamic analysis	en
dc.subject	Intensity measure	en
dc.subject	Limit-state	en
dc.subject	Non-linear	en
dc.subject	Performance-based earthquake engineering	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Geological	en
dc.subject.other	Buildings	en
dc.subject.other	Earthquake effects	en
dc.subject.other	Earthquake resistance	en
dc.subject.other	Mathematical models	en
dc.subject.other	Spectrum analysis	en
dc.subject.other	Structural analysis	en
dc.subject.other	Structural design	en
dc.subject.other	Vectors	en
dc.subject.other	Elastic spectral shape information	en
dc.subject.other	Incremental dynamic analysis (IDA)	en
dc.subject.other	Intensity measure (IM)	en
dc.subject.other	Performance-based earthquake engineering (PBEE)	en
dc.subject.other	Scalar intensity measures	en
dc.subject.other	Vector intensity measures	en
dc.subject.other	Seismology	en
dc.subject.other	earthquake engineering	en
dc.title	Developing efficient scalar and vector intensity measures for IDA capacity estimation by incorporating elastic spectral shape information	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/eqe.496	en
heal.identifier.secondary	http://dx.doi.org/10.1002/eqe.496	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	Scalar and vector intensity measures are developed for the efficient estimation of limit-state capacities through incremental dynamic analysis (IDA) by exploiting the elastic spectral shape of individual records. IDA is a powerful analysis method that involves subjecting a structural model to several ground motion records, each scaled to multiple levels of intensity (measured by the intensity measure or IM), thus producing curves of structural response parameterized by the IM on top of which limit-states can be defined and corresponding capacities can be calculated. When traditional IMs are used, such as the peak ground acceleration or the first-mode spectral acceleration, the IM-values of the capacities can display large record-to-record variability, forcing the use of many records to achieve reliable results. By using single optimal spectral values as well as vectors and scalar combinations of them on three multistorey buildings significant dispersion reductions are realized. Furthermore, IDA is extended to vector IMs, resulting in intricate fractile IDA surfaces. The results reveal the most influential spectral regions/periods for each limit-state and building, illustrating the evolution of such periods as the seismic intensity and the structural response increase towards global collapse. The ordinates of the elastic spectrum and the spectral shape of each individual record are found to significantly influence the seismic performance and they are shown to provide promising candidates for highly efficient IMs. Copyright (c) 2005 John Wiley & Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	Earthquake Engineering and Structural Dynamics	en
dc.identifier.doi	10.1002/eqe.496	en
dc.identifier.isi	ISI:000232683000002	en
dc.identifier.volume	34	en
dc.identifier.issue	13	en
dc.identifier.spage	1573	en
dc.identifier.epage	1600	en