000015914 001__ 15914
000015914 005__ 20161115135333.0
000015914 04107 $$aeng
000015914 046__ $$k2013-06-12
000015914 100__ $$aZacharenaki, A.
000015914 24500 $$aMeasuring Bias in Incremental Dynamic Analysis Using Bootstrap

000015914 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015914 260__ $$bNational Technical University of Athens, 2013
000015914 506__ $$arestricted
000015914 520__ $$2eng$$aWe present a methodology for the evaluation of the effect of scaling when Incremental Dynamic Analysis (IDA) is performed. The median capacity curve of IDA is compared to the capacity curve obtained using cloud analysis. Cloud analysis data contain results obtained using unscaled natural and synthetic ground motion records. Synthetic records were used due to the lack of a statistically significant number of natural records for large intensities. Nonlinear regression is performed with the aid of the Local Regression Smoothing Algorithm (LOESS) in order to post-process the results of cloud analysis. The primary difference between the two methods is that cloud analysis allows obtaining capacity curves without scaling the ground motion records, as opposed to the IDA algorithm. To investigate the statistical significance of this comparison, the bootstrap method is used. The bootstrap method is a powerful and easy-to-implement tool that allows calculating confidence intervals. Using bootstrap we are able to measure the bias introduced by record scaling when IDA is adopted. Thus, the bias is examined quantitatively and qualitatively for the full range of limit-states, yielding useful conclusions regarding scaling and its legitimacy in the context of IDA. A three-storey and a nine-storey steel moment resisting frames are used as testbeds for our investigations.

000015914 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015914 653__ $$aIncremental Dynamic Analysis, Cloud Analysis, Record Scaling, Bias, Bootstrap.

000015914 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015914 720__ $$aZacharenaki, A.$$iFragiadakis, M.$$iPapadrakakis, M.
000015914 8560_ $$ffischerc@itam.cas.cz
000015914 8564_ $$s233351$$uhttps://invenio.itam.cas.cz/record/15914/files/1689.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 11 PROBALISTIC METHODS IN DESIGN AND ASSESSMENT OF STRUCTURES: CONCEPTS AND APPLICATIONS
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000015914 962__ $$r15525
000015914 980__ $$aPAPER