000019845 001__ 19845
000019845 005__ 20170118182339.0
000019845 04107 $$aeng
000019845 046__ $$k2017-01-09
000019845 100__ $$aKalkan, Erol
000019845 24500 $$aDynamic Characteristics of a Twenty-Story Instrumented Building in Anchorage, Alaska Identified By Seismic Interferometry

000019845 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019845 260__ $$b
000019845 506__ $$arestricted
000019845 520__ $$2eng$$aSeismic interferometry by deconvolution is used for system identification of a twenty-story steel, moment-resisting frame building (Robert B. Atwood Building) in downtown Anchorage, Alaska. This regular-plan mid-rise structure is instrumented with a 32-channel accelerometer array at ten levels. The impulse response functions (IRFs) are computed based on waveforms recorded from five local and regional earthquakes. The earthquakes occurred from 2005 to 2014 with moment magnitudes between 4.7 and 6.2 over a range of azimuths at epicentral distances of 13.3 to 183 km. The traveling waves, identified in IRFs with a virtual source at the roof are used to estimate the intrinsic attenuation associated with the fundamental modes of the structure, and shear-wave velocity in the building due to linear response. The median shear-wave velocity from the IRFs of five earthquakes is 191 m/s for the east-west (EW), 205 m/s for the north-south (NS), and 176 m/s for the torsional responses. The building’s average intrinsic-damping ratio is estimated as 3.7% and 3.4% along the EW and NS directions, respectively. These results are intended to serve as a reference for undamaged condition of the building, which may be used for tracking changes in structural integrity during and after future earthquakes.

000019845 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019845 653__ $$aSeismic interferometry; deconvolution; impulse response function; shear-wave velocity; intrinsic attenuation; instrumentation

000019845 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019845 720__ $$aKalkan, Erol$$iWen, Weiping
000019845 8560_ $$ffischerc@itam.cas.cz
000019845 8564_ $$s938957$$uhttps://invenio.itam.cas.cz/record/19845/files/453.pdf$$yOriginal version of the author's contribution as presented on USB, paper 453.
000019845 962__ $$r16048
000019845 980__ $$aPAPER