000013367 001__ 13367
000013367 005__ 20161114160338.0
000013367 04107 $$aeng
000013367 046__ $$k2009-06-22
000013367 100__ $$aZacharenaki, A.
000013367 24500 $$aThe impact of using scaled ground motion records for seismic capacity assessment

000013367 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013367 260__ $$bNational Technical University of Athens, 2009
000013367 506__ $$arestricted
000013367 520__ $$2eng$$aIncremental Dynamic Analysis (IDA) is a powerful method that involves performing a series of nonlinear response history analyses with a multiply scaled suite of ground motion records. The well-known limitation of the IDA is that the suite of ground motion records is incrementally scaled-up until the structure collapses. This practice usually results to unrealistic scale factors introducing bias on the structural performance estimation, especially for medium-to-large seismic intensity levels. Scaling is often adopted due to the lack of natural records for large magnitudes and/or small distances from the fault rupture location. After an extensive survey of the available online ground motion databases, a large set of natural and synthetic accelerograms is used to investigate the structural response and assess the bias IDA introduces. Broadband ground motion simulations are next conducted for rupture scenaria of weak, medium and large magnitude events (Mw=5÷7.5). A three-storey and a nine-storey steel moment resisting frame with beam hinges are used as the testbed for our investigations. Using appropriate nonlinear regression techniques estimates of the capacity curve are obtained and compared to that of IDA.

000013367 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013367 653__ $$aNonlinear response history analysis, Incremental Dynamic Analysis, record scaling, natural records, synthetic records. Abstract. Incremental Dynamic Analysis (IDA) is a powerful method that involves performing a series of nonlinear response history analyses with a multiply scaled suite of ground motion records. The well-known limitation of the IDA is that the suite of ground motion records is incrementally scaled-up until the structure collapses. This practice usually results to unrealistic scale factors introducing bias on the structural performance estimation, especially for medium-to-large seismic intensity levels. Scaling is often adopted due to the lack of natural records for large magnitudes and/or small distances from the fault rupture location. After an extensive survey of the available online ground motion databases, a large set of natural and synthetic accelerograms is used to investigate the structural response and assess the bias IDA introduces. Broadband ground motion simulations are next conducted for rupture scenaria of weak, medium and large magnitude events (Mw=5÷7.5). A three-storey and a nine-storey steel moment resisting frame with beam hinges are used as the testbed for our investigations. Using appropriate nonlinear regression techniques estimates of the capacity curve are obtained and compared to that of IDA.

000013367 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013367 720__ $$aZacharenaki, A.$$iFragiadakis, M.$$iAssimaki, D.$$iPapadrakakis, M.
000013367 8560_ $$ffischerc@itam.cas.cz
000013367 8564_ $$s223954$$uhttps://invenio.itam.cas.cz/record/13367/files/CD542.pdf$$yOriginal version of the author's contribution as presented on CD, section: Calibration of nonlinear methods of analysis for seismic assessment of structures (MS).
000013367 962__ $$r13074
000013367 980__ $$aPAPER