Current empirical ground-motion prediction equations for Europe and their application to Eurocode 8 |
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| Authors: | Julian J Bommer Peter J Stafford Sinan Akkar |
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| Institution: | (1) Earthquake Research Institute, University of Tokyo, Tokyo, Japan;(2) Engineering Seismology Department, International Institute of Earthquake Engineering and Seismology, Tehran, Iran;(3) Shimizu Corporation, Tokyo, Japan |
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| Abstract: | The first ground-motion prediction equation derived from European and Middle Eastern strong-motion data was published more
than 30 years ago; since then strong-motion networks and the resulting databank of accelerograms in the region have expanded
significantly. Many equations for the prediction of peak ground-motion parameters and response spectral ordinates have been
published in recent years both for the entire Euro-Mediterranean and Middle Eastern region as well as for individual countries
within this region. Comparisons among empirical ground-motion models for these parameters, developed using large regional
datasets, do not support the hypothesis of there being significant differences in earthquake ground-motions from one area
of crustal seismicity to another. However, there are certain regions within Europe—affected by different tectonic regimes—for
which the existing pan-European equations may not be applicable. The most recent European equations make it possible to now
implement overdue modifications to the presentation of seismic design actions in Eurocode 8 that allow an improved approximation
to the target uniform hazard spectrum (UHS). Using these recent equations, this study outlines a new approach via which an
approximation to the UHS may be constructed using hazard maps calculated for peak ground velocity and the corner period T
D in addition to the maps for peak ground acceleration that underpin the current stipulations of Eurocode 8. |
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