Responses of a tall building in Los Angeles, California as inferred from local and distant earthquakes

Earthquake Spectra
By: , and 

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Abstract

Increasing inventory of tall buildings in the United States and elsewhere may be subjected to motions generated by near and far seismic sources that cause long-period effects. Multiple sets of records that exhibited such effects were retrieved from tall buildings in Tokyo and Osaka ~ 350 km and 770 km from the epicenter of the 2011 Tohoku earthquake. In California, very few tall buildings have been instrumented. An instrumented 52-story building in downtown Los Angeles recorded seven local and distant earthquakes. Spectral and system identification methods exhibit significant low frequencies of interest (~0.17 Hz, 0.56 Hz and 1.05 Hz). These frequencies compare well with those computed by transfer functions; however, small variations are observed between the significant low frequencies for each of the seven earthquakes. The torsional and translational frequencies are very close and are coupled. Beating effect is observed in at least two of the seven earthquake data.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Responses of a tall building in Los Angeles, California as inferred from local and distant earthquakes
Series title Earthquake Spectra
DOI 10.1193/050515EQS065M
Volume 32
Issue 3
Year Published 2016
Language English
Publisher Earthquake Engineering Research Institute
Contributing office(s) Earthquake Science Center
Description 23 p.
First page 1821
Last page 1843