000021506 001__ 21506
000021506 005__ 20170622131249.0
000021506 04107 $$aeng
000021506 046__ $$k2017-06-15
000021506 100__ $$aQuaranta, Giuseppe
000021506 24500 $$aACCURACY OF EQUIVALENT LINEAR MODELS FOR BILINEAR OSCILLATORS UNDER PULSE-LIKE GROUND MOTION

000021506 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021506 260__ $$bNational Technical University of Athens, 2017
000021506 506__ $$arestricted
000021506 520__ $$2eng$$aNonlinear dynamic analysis is the most reliable approach for the assessment of structures under earthquake, provided that implemented computational method and adopted mechanical models are able to simulate properly material and geometrical nonlinearities. Nonetheless, several guidelines and codes also strive to include simplified methodologies for use in practice. In this perspective, several equivalent linear models have been proposed so far in order to allow a rapid analysis of oscillators with bilinear-type response, but none of the existing studies has yet examined systematically their reliability in case of pulse-like ground motion. Therefore, this paper presents the results of an extensive numerical investigation that aims at assessing whether existing equivalent linear models can be exploited in order to estimate the maximum displacement of bilinear oscillators under pulse-like near-fault ground motion. Several nonlinear dynamic analyses have been performed and final results demonstrate that the accuracy of current equivalent linear models depends on the ratio between the elastic period of the bilinear oscillator and the pulse period of the seismic excitation.

000021506 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021506 653__ $$aBilinear system, Equivalent viscous damping, Pulse-like ground motion.

000021506 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021506 720__ $$aQuaranta, Giuseppe$$iMollaioli, Fabrizio
000021506 8560_ $$ffischerc@itam.cas.cz
000021506 8564_ $$s2166871$$uhttps://invenio.itam.cas.cz/record/21506/files/16736.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS23] Sino-European Research on Earthquake Engineering
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000021506 962__ $$r21500
000021506 980__ $$aPAPER