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Eliminating Beating Effects in Damping Estimation of High-Rise Buildings
AbstractThe beating phenomenon, induced by coupling between translational modes of tall buildings with closely spaced frequencies, may have significant effects on modal identification, especially damping estimation. This paper proposes a new method for attenuating the adverse effects of beating on m...
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Published in: | Journal of engineering mechanics 2019-12, Vol.145 (12) |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | AbstractThe beating phenomenon, induced by coupling between translational modes of tall buildings with closely spaced frequencies, may have significant effects on modal identification, especially damping estimation. This paper proposes a new method for attenuating the adverse effects of beating on modal identification for high-rise buildings. Beating in typhoon-induced responses of a high-rise building is clearly observed via both frequency domain and time domain analysis. To eliminate the effects of beating on structural modal identification, a normal coordinates–based modal decomposition method for coupled translational modes is proposed, which is proved to be effective for separating closely coupled translational modes and thereby improving the accuracy of damping estimation for high-rise buildings. This paper aims to provide valuable implications for damping evaluation of high-rise buildings. |
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ISSN: | 0733-9399 1943-7889 |
DOI: | 10.1061/(ASCE)EM.1943-7889.0001681 |