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F. Carli, C. Carino, "An Evolutionary Approach for the Synthesis of Spectrum Compatible and Site-Dependent Earthquake Accelerograms", in Y. Tsompanakis, (Editor), "Proceedings of the Third International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 1, 2013. doi:10.4203/ccp.103.1

Keywords: earthquake records, evolutionary model, synthetic accelerograms, spectrum compatibility, design spectra.

Summary

This paper proposes a numerical procedure for the generation of sets of synthetic acceleration time-histories that are compatible with an assigned target design spectrum. The proposed formulation is able to take into account for both the energy distribution in time and the contemporary variability of the frequency content. In particular the discussed time-frequency approach is based on the possible decoupling of the distribution in time of the energy release from the changing frequency content. The decoupling of the two main sources of the non-stationary behavior observed in natural earthquake records is obtained by defining two different modulating functions one governing the intensity of signal and the other ruling the evolution of the frequency content. The proposed approach allows the recognition of strict relations between recorded accelerograms at a site and the underlying evolutionary model here proposed for the generation of spectrum compatible time histories. The closing numerical example is developed for a reference Italian seismic site and based on a specific past record at the site and on the corresponding design spectrum prescribed by the recently modified national design code.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 103 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON SOFT COMPUTING TECHNOLOGY IN CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING Edited by: Y. Tsompanakis Paper 1 An Evolutionary Approach for the Synthesis of Spectrum Compatible and Site-Dependent Earthquake Accelerograms F. Carli and C. Carino Department of Civil Engineering and Architecture, University of Pavia, Italy doi:10.4203/ccp.103.1 purchase the full-text of this paper Full Bibliographic Reference for this paper F. Carli, C. Carino, "An Evolutionary Approach for the Synthesis of Spectrum Compatible and Site-Dependent Earthquake Accelerograms", in Y. Tsompanakis, (Editor), "Proceedings of the Third International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 1, 2013. doi:10.4203/ccp.103.1 Keywords: earthquake records, evolutionary model, synthetic accelerograms, spectrum compatibility, design spectra. Summary This paper proposes a numerical procedure for the generation of sets of synthetic acceleration time-histories that are compatible with an assigned target design spectrum. The proposed formulation is able to take into account for both the energy distribution in time and the contemporary variability of the frequency content. In particular the discussed time-frequency approach is based on the possible decoupling of the distribution in time of the energy release from the changing frequency content. The decoupling of the two main sources of the non-stationary behavior observed in natural earthquake records is obtained by defining two different modulating functions one governing the intensity of signal and the other ruling the evolution of the frequency content. The proposed approach allows the recognition of strict relations between recorded accelerograms at a site and the underlying evolutionary model here proposed for the generation of spectrum compatible time histories. The closing numerical example is developed for a reference Italian seismic site and based on a specific past record at the site and on the corresponding design spectrum prescribed by the recently modified national design code. purchase the full-text of this paper (price £20) go to the next paper return to the table of contents return to the book description purchase this book (price £42 +P&P)
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