000019214 001__ 19214
000019214 005__ 20170118182304.0
000019214 04107 $$aeng
000019214 046__ $$k2017-01-09
000019214 100__ $$aCelebi, Mehmet
000019214 24500 $$aResponses of a 64-Story Unique San Francisco, Ca. Building  To Four Earthquakes and Ambient Motions

000019214 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019214 260__ $$b
000019214 506__ $$arestricted
000019214 520__ $$2eng$$aWe analyze the ambient and earthquake responses of a 64-story, instrumented, concrete core shear wall building in San Francisco, Calif. equipped with tuned sloshing liquid dampers (TSDs) and buckling restraining braces (BRBs). In an earlier paper, only ambient data were used to identify dynamic characteristics. Recently, the 72-channel instrumental array of the building recorded the 24 August 2014 Mw6.0 South Napa and three other earthquakes – allowing comparison of the dynamic characteristics using ambient and earthquake data. Peak accelerations of ambient and the larger South Napa EQ responses at the basement are 0.12 and 5.2 cm/s/s, respectively – a factor of ~ 42 and, at the 61st level, are 0.30 and 16.8 cm/s/s, respectively –a factor of ~56. Fundamental frequencies from spectral ratios for the NS (~0.3Hz), EW (0.27Hz) and torsional accelerations for the earthquake response vary within an insignificant frequency band of ~ 0.02-0.03 Hz as compared to those determined from ambient data. At the level of shaking, BRBs or TSDs are not effective enough to alter dynamic characteristics (frequency or damping). Under future stronger (e.g. design level) shaking of the building, the nonlinearities caused by actions of TSDs and BRBs can substantially shift the dynamic characteristics of the building.

000019214 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019214 653__ $$aconcrete core shear wall; ambient vibration; earthquake response; sloshing damper; buckling restrained braces

000019214 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019214 720__ $$aCelebi, Mehmet
000019214 8560_ $$ffischerc@itam.cas.cz
000019214 8564_ $$s637521$$uhttps://invenio.itam.cas.cz/record/19214/files/31.pdf$$yOriginal version of the author's contribution as presented on USB, paper 31.
000019214 962__ $$r16048
000019214 980__ $$aPAPER