NEHRP Clearinghouse

Low-Level Dynamic Characteristics of Four Tall Flat-Plate Buildings in New York City.
Gavin, H.; Yuan, S.; Grossman, J.; Pekelis, E.; Jacob, K.
National Center for Earthquake Engineering Research, Buffalo, NY.; New York State Science and Technology Foundation, Albany.; National Science Foundation, Washington, DC., December 28, 1992, 145 p.
The authors collected ambient vibration measurements to study the behavior of four flat plate, reinforced concrete structures on Manhattan island in New York City. The buildings range from 27 to 52 stories and all but one structure rest on a rock supported foundation. The report presents the development of ambient vibration analysis software based on the fast Fourier transform. The results provide a base-line set of periods, deflections, and damping ratios for comparison with results expected as a result of strong winds. Periods estimated from ambient, mostly wind-induced vibrations are used to calibrate finite element models of the structures and are compared with values calculated from code design rules.
Flat plate models; Skyscrapers; Earthquake resistant structures; Earthquake engineering; Commercial buildings; Seismic design; Vibration damping; New York City (New York); Computerized simulation; Power spectra; Dynamic structural analysis