In seismic codes, elastic response spectra are usually defined by adopting a conventional value for the damping ratio equal to 5%. Damping Reduction Factors (DRFs) are then introduced to account for the effect of damping values higher than the nominal 5%. In this framework, the main aim of the present study is to explore a new definition of DRF. The concept of stochastic response spectrum is used for predicting the earthquake response of a structural system by adopting the random vibration theory for nonstationary processes. The peak theory is finally used to determine the DRF.
Effects of Excitation Bandwidth on Damping Reduction Factor / Greco, R.; Fiore, A.; Marano, G. C.; Briseghella, B.. - In: JOURNAL OF EARTHQUAKE ENGINEERING. - ISSN 1363-2469. - 25:4(2021), pp. 649-676. [10.1080/13632469.2018.1528910]
Effects of Excitation Bandwidth on Damping Reduction Factor
Fiore A.;Briseghella B.
2021
Abstract
In seismic codes, elastic response spectra are usually defined by adopting a conventional value for the damping ratio equal to 5%. Damping Reduction Factors (DRFs) are then introduced to account for the effect of damping values higher than the nominal 5%. In this framework, the main aim of the present study is to explore a new definition of DRF. The concept of stochastic response spectrum is used for predicting the earthquake response of a structural system by adopting the random vibration theory for nonstationary processes. The peak theory is finally used to determine the DRF.
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