Fast performance uncertainty estimation via pushover and approximate IDA

Fragiadakis, M; Vamvatsikos, D

dc.contributor.author	Fragiadakis, M	en
dc.contributor.author	Vamvatsikos, D	en
dc.date.accessioned	2014-03-01T01:33:29Z
dc.date.available	2014-03-01T01:33:29Z
dc.date.issued	2010	en
dc.identifier.issn	0098-8847	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20444
dc.subject	Epistemic uncertainty	en
dc.subject	Incremental dynamic analysis	en
dc.subject	moment-estimating methods	en
dc.subject	Performance-based earthquake engineering	en
dc.subject	Simulation	en
dc.subject	Static pushover analysis	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Geological	en
dc.subject.other	Epistemic uncertainties	en
dc.subject.other	Estimating method	en
dc.subject.other	Incremental dynamic analysis	en
dc.subject.other	Performance-based earthquake engineering	en
dc.subject.other	Static pushover analysis	en
dc.subject.other	Approximation theory	en
dc.subject.other	Civil engineering	en
dc.subject.other	Computer simulation	en
dc.subject.other	Dynamic analysis	en
dc.subject.other	Earthquakes	en
dc.subject.other	Engineering geology	en
dc.subject.other	Estimation	en
dc.subject.other	Monte Carlo methods	en
dc.subject.other	Seismic waves	en
dc.subject.other	Uncertainty analysis	en
dc.subject.other	dynamic analysis	en
dc.subject.other	earthquake engineering	en
dc.subject.other	estimation method	en
dc.subject.other	seismic response	en
dc.subject.other	steel structure	en
dc.subject.other	Idas	en
dc.title	Fast performance uncertainty estimation via pushover and approximate IDA	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/eqe.965	en
heal.identifier.secondary	http://dx.doi.org/10.1002/eqe.965	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Approximate methods based on the static pushover are introduced to estimate the seismic performance uncertainty of structures having non-deterministic modeling parameters. At their basis lies the use of static pushover analysis to approximate Incremental Dynamic Analysis (IDA) and estimate the demand and capacity epistemic uncertainty. As a testbed we use a nine-storey steel frame having beam hinges with uncertain moment rotation relationships. Their properties are fully described by six, randomly distributed, parameters. Using Monte Carlo simulation with Latin hypercube sampling, a characteristic ensemble of structures is created. The Static Pushover to IDA (SPO2IDA) software is used to approximate the IDA capacity curve from the appropriately post-processed results of the static pushover. The approximate IDAs allow the evaluation of the seismic demand and capacity for the full range of limit-states, even close to global dynamic instability. Moment-estimating techniques such as Rosenblueth's point estimating method and the first-order, second-moment (FOSM) method are adopted as simple alternatives to obtain performance statistics with only a few simulations. The pushover is shown to be a tool that combined with SPO2IDA and moment-estimating techniques can supply the uncertainty in the seismic performance of first-mode-dominated buildings for the full range of limit-states, thus replacing semi-empirical or code-tabulated values (e.g. FEMA-350), often adopted in performance-based earthquake engineering. Copyright (C) 2009 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.965	en
dc.identifier.isi	ISI:000276741100005	en
dc.identifier.volume	39	en
dc.identifier.issue	6	en
dc.identifier.spage	683	en
dc.identifier.epage	703	en