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http://dx.doi.org/10.5000/EESK.2003.7.1.031

Generation of RMS Hazard-Compatible Artificial Earthquake Ground Motions  

Kim, Jin-Man (현대건설 기술연구소)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.1, 2003 , pp. 31-40 More about this Journal
Abstract
Due to the random nature of earthquake, the definition of the input excitation is one of the major uncertainties in the seismic response analysis. Furthermore, ground motions that correspond to a limited number of design parameters are not unique. Consequently, a brood range of response values can be obtained even with a set of motions, which match the same target parameters. The paper presents a practical probabilistic approach that can be used to systematically model the stochastic nature of seismic loading. The new approach is based on energy-based RMS hazard and takes account for the uncertainties of key ground motion parameters. The simulations indicate that the new RMS procedure is particularly useful for the rigorous probabilistic seismic response analysis, since the procedure is suitable for generation of large number of hazard-compatible motions, unlike the conventional procedure that aim to generate a small number of motions.
Keywords
earthquake; artificial motion; stochastic process; generation; RMS hazard; uncertainty;
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