TIME VARYING ARMA BASED STOCHASTIC SEISMIC MODEL
When the stochastic seismic response of the structures is studied, lots of the earthquake records fit for the selected site is needed to be used for initial data for structure model analysis. In the given site it does not always earthquake ground motion time history matching the location condition. In this paper we used the sample records reformed by Chinese code 2001 version for seismic design of buildings as target earthquake records and made a modified discrete time-vary ARMA model. Both amplitude and frequency nonstationarities were incorporated into the model. Chi-Square verification tests were performed on the different nonstationary ARMA model. Application of these verification procedures was discussed and showed that the proposed models were able to reflect accurately the nonstationary features on real earthquake accelerogram, both the time-variation of the frequency and amplitude content. Thus we made a more efficiently simulated earthquake records matching
time vary ARMA model Box-Cox transform nonstationarity stochastic seismic model
Zeng Ke Niu Ditao He Yuanbin Shang Ruixia
Xian University of Architecture & Technology China Building Technique Group Co. Ltd.
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）