掲載雑誌（和）： 日本地震工学シンポジウム講演集 Vol： 7巻 年： 1986年 頁： 1465-1470頁 著者（和）： - タイトル（和）： - 抄録（和）：
- キーワード（和）： - 掲載雑誌（英）： PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM 著者（英）： Masanori IZUMI, Li Zaiming タイトル（英）： ON DRIFT RESPONSE IN ELASTO-PLASTIC HYSTERETIC SYSTEM SUBJECTED TO WHITE NOISE EXCITATION 抄録（英）：
Most structures exhibit yielding non-linear behaviour under severe loading. This kind of structures have a tendency to drift. In fact, it has been reported[1] that practical base isolated structures exhibit drift response clearly under severe earthquakes. To the random response analysis of these structures, M.E.L seems to have the greatest potential in terms of practical application. However the accuracy is rather poor because of the tendency. In this paper drift response in such E.P hysteretic models under white noise excitation has been studied and the following conclusions have been deduced. The total inelastic displacement consists of a zero-mean oscillatory inelastic component and a drift component. The former is near to Gaussian but instead the latter is far from it. Further drift response affects the spectra and may dominate in the response. Besides, long duration time of excitation facilitates the drift response to reach to the stationary state. In addition, an approach to evaluation of drift response has been developed based on the theory of Markov chain process. With the proposed approach the treatment of drift response as well as the displacement response is allowed easily. The accuracy of the approach has been verified against M.C.S. キーワード（英）： - 記事区分： - 区分 　　　委員会論文集