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Damping modification factor of the vertical response spectrum
https://orcid.org/http://orcid.org/0000-0001-8332-7874
In seismic design methods, the damping modification factors (DMFs) are the important parameter considerations in structure design. This paper investigates the effect of closest distance, site conditions, earthquake magnitude, peak ground acceleration (PGA), and damping ratios (ξ) on DMFs to the vertical response spectrums. 195 sets of vertical ground motions earthquakes recorded were selected from the PEER strong motion database. These earthquakes recorded are selected to cover a wide range of site distance classifications, specific average shear wave velocity intervals, earthquake moment magnitudes, and three seismic levels of PGA. The vertical response spectra for each earthquake in different damping ratios are calculated. The DMFs for damping ratio that equals 1%, 10%, 15%, 20%, 30%, and 40% are calculated using the 5%-damped vertical response spectra as standards. The results show that the soil classes, earthquake site distance, and seismic levels of PGA have little effect on the DMF, while the moment magnitude of earthquake events has a high effect on the DMF. In addition, simplified empirical formulations are presented to compute the DMF and they are compared to those found in the literature and seismic design codes.
Damping modification factor of the vertical response spectrum
https://orcid.org/http://orcid.org/0000-0001-8332-7874
In seismic design methods, the damping modification factors (DMFs) are the important parameter considerations in structure design. This paper investigates the effect of closest distance, site conditions, earthquake magnitude, peak ground acceleration (PGA), and damping ratios (ξ) on DMFs to the vertical response spectrums. 195 sets of vertical ground motions earthquakes recorded were selected from the PEER strong motion database. These earthquakes recorded are selected to cover a wide range of site distance classifications, specific average shear wave velocity intervals, earthquake moment magnitudes, and three seismic levels of PGA. The vertical response spectra for each earthquake in different damping ratios are calculated. The DMFs for damping ratio that equals 1%, 10%, 15%, 20%, 30%, and 40% are calculated using the 5%-damped vertical response spectra as standards. The results show that the soil classes, earthquake site distance, and seismic levels of PGA have little effect on the DMF, while the moment magnitude of earthquake events has a high effect on the DMF. In addition, simplified empirical formulations are presented to compute the DMF and they are compared to those found in the literature and seismic design codes.
Damping modification factor of the vertical response spectrum
https://orcid.org/http://orcid.org/0000-0001-8332-7874
In seismic design methods, the damping modification factors (DMFs) are the important parameter considerations in structure design. This paper investigates the effect of closest distance, site conditions, earthquake magnitude, peak ground acceleration (PGA), and damping ratios (ξ) on DMFs to the vertical response spectrums. 195 sets of vertical ground motions earthquakes recorded were selected from the PEER strong motion database. These earthquakes recorded are selected to cover a wide range of site distance classifications, specific average shear wave velocity intervals, earthquake moment magnitudes, and three seismic levels of PGA. The vertical response spectra for each earthquake in different damping ratios are calculated. The DMFs for damping ratio that equals 1%, 10%, 15%, 20%, 30%, and 40% are calculated using the 5%-damped vertical response spectra as standards. The results show that the soil classes, earthquake site distance, and seismic levels of PGA have little effect on the DMF, while the moment magnitude of earthquake events has a high effect on the DMF. In addition, simplified empirical formulations are presented to compute the DMF and they are compared to those found in the literature and seismic design codes.
Damping modification factor of the vertical response spectrum
Asian J Civ Eng
Elhout, Emad A. (Autor:in)
Asian Journal of Civil Engineering ; 23 ; 929-942
01.09.2022
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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