000018445 001__ 18445
000018445 005__ 20170118182222.0
000018445 04107 $$aeng
000018445 046__ $$k2017-01-09
000018445 100__ $$aÖzdemir, Gökhan
000018445 24500 $$aVariation of Damping Reduction Factors Used in Design of Isolated Structures Due To Ground Motion Directionality

000018445 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018445 260__ $$b
000018445 506__ $$arestricted
000018445 520__ $$2eng$$aIn seismic isolated structures, the level of equivalent damping ratio is generally greater than 5%. However, the elastic design response spectrum provided by codes specifications are for 5% critical damping. Thus, it has to be modified so that the effect of high damping can be considered. This is achieved by using damping reduction factors. In this study, variation in damping reduction factors due to ground motion orientation has been investigated. Accordingly, orthogonal horizontal components of selected as-recorded ground motions were rotated from 0o to 180o with increments of 10o to mimic various ground motion orientations. Then, damping reduction factors of all the rotated records and the original ones were computed for various damping ratios. Computed values are used to assess the amount of variation in damping reduction factors as a function of ground motion orientation. Results of this study indicate that ground motion orientation is a significant parameter in computation of damping reduction factor.

000018445 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018445 653__ $$adamping reduction factor; ground motion directionality; seismic isolation

000018445 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018445 720__ $$aÖzdemir, Gökhan$$iBayhan, Beyhan
000018445 8560_ $$ffischerc@itam.cas.cz
000018445 8564_ $$s1404703$$uhttps://invenio.itam.cas.cz/record/18445/files/1474.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1474.
000018445 962__ $$r16048
000018445 980__ $$aPAPER