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ARMA MODELLING OF ARTIFICIAL ACCELEROGRAMS FOR WESTERN IRAN | ||
| Iranian Journal of Science | ||
| مقاله 11، دوره 29، شماره 1، اردیبهشت 2005، صفحه 107-116 اصل مقاله (308.02 K) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2005.2788 | ||
| نویسندگان | ||
| S. M. FATEMI AGHDA* 1؛ A. J. GANDOMI1؛ A. BEITOLLAHI2 | ||
| 1Department of Geology, Tarbiat Moallem Univ., Tehran, I. R. of Iran | ||
| 2Department of Eng. Seismology, BHRC, Tehran, I. R. of Iran | ||
| چکیده | ||
| The Artificial Accelerograms have been developed for assessing the dynamic response of structures. Considering seismological properties of the site are necessary for the best simulation of accelerograms. The real recorded accelergrams for simulating earthquake phenomenon are used in the Arma model. This is due to the fact that the Arma model can be considered more advantageous than the others. In this paper, 25 recorded accelerograms are used for simulating accelerograms of a dam site in Hamedan province in western Iran. The parameters which are used in the stationary transformation are related to the physical parameters (eg. magnitude, epicentral distance and duration) via a regression analysis. To generate Artificial Accelerogram, the physical parameters enter the Arma model, therefore the output would be a stationary time history adjusted with recorded accelerograms. The generated stationary time history is changed into a non-stationary time history from the amplitude and frequency point of view. | ||
| کلیدواژهها | ||
| Artificial accelerogram؛ ARMA model؛ simulation of earthquake | ||
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