ARMA Modeling of Artificial Accelerograms for Algeria
The main aim of this study is to examine on the real and simulated earthquakes effects. This paper deals with the use of ARMA models in earthquake engineering. The time-varying auto regressive moving average (ARMA) process is used as a simple yet efficient method for simulating earthquake ground motions. This model is capable of reproducing the nonstationary amplitude as well as the frequency content of the earthquake ground accelerations. The moving time-window technique is applied to synthesize the near field earthquakes, Chlef-1, Chlef-2, Chlef-3 and Attaf 1980 recorded on dense soils in Algeria. This model, is based on a low-order, time-invariant ARMA process excited by Gaussian white noise and amplitude modulated using a simple envelope function to account for the non-stationary characteristics. This simple model gives a reasonable fit to the observed ground motion. It is shown that the selected ARMA (2,1) model and the algorithm used for generating the accelerograms are able to preserve the features of the real earthquake records with different frequency content, fa this evaluation, the linear and non linear responses of a given soil layer have been adopted. This study suggests the ability to characterize the earthquake by a minimum number of parameters.
Seismic movements ARMA Model simulation of earthquake modeling procedure non linear computation response of a soil layer
A. Menasri M. Brahimi R. Frank A. Bali
Civil Engineering & Hydraulic Department. Technology Faculty, Msila University, 28000 Algeria Mechanical Engineering Technology Department at City Tech, New York, USA Ecole Nationale des Ponts et Chaussees, E.N.P.C, Paris, France Ecole Nationale Polytechnique,d Alger,16000, Algerie
国际会议
上海
英文
348-355
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）