A Ground Motion Prediction Model for Average Spectral Acceleration. Issue 2 (28th January 2021)

• Record Type: Journal Article
• Authors: Dávalos, Héctor; Miranda, Eduardo
• Is Part Of: Journal of earthquake engineering. Volume 25:Issue 2(2021)
• Page Start: 319
• Page End: 342
• Publication Date: 2021-01-28
• Subjects: Average spectral acceleration -- ground motion prediction model -- intensity measure -- variability -- correlation; Earthquake engineering -- Periodicals; 624.1762
• DOI: 10.1080/13632469.2018.1518278
• Languages: English
• ISSNs: 1363-2469

Abstract

ABSTRACT: This study presents a ground motion prediction model that directly estimates the median and dispersion of Saavg, defined as the geometric mean of 5%-damped pseudo-acceleration ordinates of oscillators with periods between one fifth and three times the structure's period of vibration. This model is applicable for ground motions with moment magnitudes between 5 and 8 and Joyner-Boore distances between 0 km and 150 km. Results show that the dispersion of Saavg is lower than that of Sa (T1 ). A model to estimate the correlation between Saavg ordinates at different periods of vibration and between orthogonal components is also presented.