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Fast performance uncertainty estimation via pushover and approximate IDA
dc.creator | Fragiadakis, M. | en |
dc.creator | Vamvatsikos, D. | en |
dc.date.accessioned | 2015-11-23T10:26:45Z | |
dc.date.available | 2015-11-23T10:26:45Z | |
dc.date.issued | 2010 | |
dc.identifier | 10.1002/eqe.965 | |
dc.identifier.issn | 0098-8847 | |
dc.identifier.uri | http://hdl.handle.net/11615/27559 | |
dc.description.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 |
dc.source.uri | <Go to ISI>://WOS:000276741100005 | |
dc.subject | epistemic uncertainty | en |
dc.subject | static pushover analysis | en |
dc.subject | Incremental Dynamic | en |
dc.subject | Analysis | en |
dc.subject | simulation | en |
dc.subject | moment-estimating methods | en |
dc.subject | performance-based | en |
dc.subject | earthquake engineering | en |
dc.subject | INCREMENTAL DYNAMIC-ANALYSIS | en |
dc.subject | INPUT VARIABLES | en |
dc.subject | SEISMIC DEMAND | en |
dc.subject | CAPACITY | en |
dc.subject | RISK | en |
dc.subject | Engineering, Civil | en |
dc.subject | Engineering, Geological | en |
dc.title | Fast performance uncertainty estimation via pushover and approximate IDA | en |
dc.type | journalArticle | en |
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