Damping scaling factors for elastic response spectra for shallow crustal earthquakes in active tectonic regions: "average" horizontal component
Earthquake Spectra
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Ground motion prediction equations (GMPEs) for elastic response spectra are typically developed at a 5% viscous damping ratio. In reality, however, structural and nonstructural systems can have other damping ratios. This paper develops a new model for a damping scaling factor (DSF) that can be used to adjust the 5% damped spectral ordinates predicted by a GMPE for damping ratios between 0.5% to 30%. The model is developed based on empirical data from worldwide shallow crustal earthquakes in active tectonic regions. Dependencies of the DSF on potential predictor variables, such as the damping ratio, spectral period, ground motion duration, moment magnitude, source-to-site distance, and site conditions, are examined. The strong influence of duration is captured by the inclusion of both magnitude and distance in the DSF model. Site conditions show weak influence on the DSF. The proposed damping scaling model provides functional forms for the median and logarithmic standard deviation of DSF, and is developed for both RotD50 and GMRotI50 horizontal components. A follow-up paper develops a DSF model for vertical ground motion.
Suggested Citation
Rezaeian, S., Bozorgnia, Y., Idriss, I., Abrahamson, N., Campbell, K., Silva, W., 2014, Damping scaling factors for elastic response spectra for shallow crustal earthquakes in active tectonic regions: "average" horizontal component: Earthquake Spectra, v. 30, no. 2, p. 939-963, https://doi.org/10.1193/100512EQS298M.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Damping scaling factors for elastic response spectra for shallow crustal earthquakes in active tectonic regions: "average" horizontal component |
| Series title | Earthquake Spectra |
| DOI | 10.1193/100512EQS298M |
| Volume | 30 |
| Issue | 2 |
| Publication Date | May 01, 2014 |
| Year Published | 2014 |
| Language | English |
| Publisher | Earthquake Engineering Research Institute |
| Publisher location | Berkeley, CA |
| Contributing office(s) | Geologic Hazards Science Center |
| Description | 25 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Earthquake Spectra |
| First page | 939 |
| Last page | 963 |