000022382 001__ 22382
000022382 005__ 20170622150011.0
000022382 04107 $$aeng
000022382 046__ $$k2015-05-25
000022382 100__ $$aGiannopoulos, Dimitrios
000022382 24500 $$aINFLUENCE OF ROTATED GROUND MOTION COMPONENTS ON THE RESPONSE DISTRIBUTION OF INELASTIC OSCILLATORS

000022382 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022382 260__ $$bNational Technical University of Athens, 2015
000022382 506__ $$arestricted
000022382 520__ $$2eng$$aRecent research has shown that structures may experience quite different response when the components of any given ground motion record are rotated in the horizontal plane. On the other hand, significant differences are also associated with using different ground motion records. This paper examines whether it is preferable to use a small set of records, each rotated to multiple incidence angles, or a larger set with fewer (or no) rotations, in the case we wish to perform a fixed number of nonlinear dynamic analyses and we have little site information. To this purpose we collected a relatively large, non-pulsive set of records and applied it to an elastoplastic single-degree-of-freedom (SDOF) system. Finally, bootstrapping was performed to investigate the effect of the number of rotation angles studied versus the number of records on the statistics of response. The results indicate that, in all cases, and especially when a small number of nonlinear analyses is allocated, the effect of record-torecord variability clearly outweighs the incidence angle influence. Using a small set of records can lead to unreliable results by both inaccurate estimation of the central value and severe underestimation of the dispersion.

000022382 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022382 653__ $$aIncremental Dynamic Analysis, Angle of Incidence, Probabilistic Risk Assessment, Performance-Based Earthquake Engineering, Nonlinear Dynamic Analysis.

000022382 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022382 720__ $$aGiannopoulos, Dimitrios$$iVamvatsikos, Dimitrios
000022382 8560_ $$ffischerc@itam.cas.cz
000022382 8564_ $$s1329658$$uhttps://invenio.itam.cas.cz/record/22382/files/C641.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022382 962__ $$r22030
000022382 980__ $$aPAPER