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Analysis of exponent K based on “SHARE” project data and its implications on importance factors of EN 1998–1

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Abstract

This contribution deals with seismic activity represented by a hazard curve through a single parameter–exponent k as given in EN 1998–1 and its implications on importance factors. We used the SHARE project dataset to calculate exponent k for the wider European area, and a limited number of separate national studies for comparison of the results since comparison to the SHARE results on the same dataset resulted in values of exponent k smaller by 1–1.5. The results indicate that the recommended value of exponent k of 3 is rather an exception than an expected value in seismically active regions and that, with the exclusion of the Vrancea zone, for the majority of Europe, exponent k is well below that assumed in EN 1998–1, which consequently indicates that the importance factors for these locations should be higher than those recommended in EN 1998–1.

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Acknowledgements

The manuscript has profited enormously from the remarks and suggestions of the editor and two anonymous reviewers to whom the authors are very grateful indeed.

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Correspondence to Dejan Dragojević.

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Dragojević, D., Šalić Makreska, R. & Milutinović, Z. Analysis of exponent K based on “SHARE” project data and its implications on importance factors of EN 1998–1. Bull Earthquake Eng 20, 2683–2694 (2022). https://doi.org/10.1007/s10518-022-01333-y

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