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Significance of beating observed in earthquake responses of buildings

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Abstract

The beating phenomenon observed in the recorded responses of a tall building in Japan and another in the U.S. are examined in this paper. Beating is a periodic vibrational behavior caused by distinctive coupling between translational and torsional modes that typically have close frequencies. Beating is prominent in the prolonged resonant responses of lightly damped structures. Resonances caused by site effects also contribute to accentuating the beating effect. Spectral analyses and system identification techniques are used herein to quantify the periods and amplitudes of the beating effects from the strong motion recordings of the two buildings. Quantification of beating effects is a first step towards determining remedial actions to improve resilient building performance to strong earthquake induced shaking.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Significance of beating observed in earthquake responses of buildings
Year Published 2016
Language English
Publisher Applied Technology Council
Contributing office(s) Earthquake Science Center
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title 16th U.S.-Japan-New Zealand Workshop on the Improvement of Structural Engineering and Resiliency