Generation of artificial earthquake accelerograms compatible with mean and mean ± standard deviation

CACCIOLA, PIERFRANCESCO and Zentner, Irmela (2010) Generation of artificial earthquake accelerograms compatible with mean and mean ± standard deviation In: Proceedings of the Sixth International Conference on Computational Stochastic Mechanics (CSM6), Rhodes, Greece, 13-16 June, 2010.

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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.

Item Type: Contribution to conference proceedings in the public domain ( Full Paper)
Uncontrolled Keywords: Ground motion; Variability; Response spectra; Simulation
Subjects: H000 Engineering > H200 Civil Engineering
H000 Engineering > H200 Civil Engineering > H210 Structural Engineering
DOI (a stable link to the resource): 10.3850/978-981-08-7619-7_P014
Faculties: Faculty of Science and Engineering > School of Environment and Technology > Ground water and structural engineering
Faculty of Science and Engineering > School of Environment and Technology
Depositing User: Converis
Date Deposited: 12 Oct 2011 08:17
Last Modified: 20 Sep 2013 08:37
URI: http://eprints.brighton.ac.uk/id/eprint/9260

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