Abstract
The sustained dissemination of database of recorded accelerograms along with the increasing number of strong-motion networks installed worldwide revealed that the current methodologies for simulating artificial earthquakes possess the drawback that the simulated time-histories do not manifest the variability observed for natural accelerograms. As a consequence, the dispersion of resulting structural response analysis can be underestimated. In order to take into account the natural variability of earthquakes, a methodology for simulating artificial earthquake accelerograms matching mean and mean ± standard deviation response spectra is proposed in this paper. This dispersion can be determined from attenuation relationships or evaluated from selected accelerograms of a strong-motion database. The procedure requires the definition of an evolutionary response-spectrum-compatible power spectral density function with random parameters. The simulated ground motion time-histories will manifest variability so that one observed in natural records.
Original language | English |
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Title of host publication | Proceedings of the Sixth International Conference on Computational Stochastic Mechanics (CSM6) |
Editors | G. Deodatis, P.D. Spanos |
Place of Publication | Singapore |
Publisher | Research Publishing |
Pages | 0-0 |
Number of pages | 1 |
ISBN (Print) | 9789810876197 |
DOIs | |
Publication status | Published - 1 Jun 2010 |
Event | Proceedings of the Sixth International Conference on Computational Stochastic Mechanics (CSM6) - Rhodes, Greece, 13-16 June, 2010 Duration: 1 Jun 2010 → … |
Conference
Conference | Proceedings of the Sixth International Conference on Computational Stochastic Mechanics (CSM6) |
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Period | 1/06/10 → … |
Keywords
- Ground motion
- Variability
- Response spectra
- Simulation