掲載雑誌（和）： 日本地震工学シンポジウム論文集 Vol： 8-1巻 年： 1990年 頁： 331-336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 THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM 著者（英）： Kenzo TOKI, Tadanobu SATO, Junji KIYONO タイトル（英）： MODELING OF SPATIAL VARIATION OF GROUND MOTION ON IRREGULAR PROFILES 抄録（英）：
Lifeline systems such as buried gas or water pipelines will be heavily damaged during an earthquake if the relative displacement between two points on the ground is large. These long underground structures are affected by the profile of the surface ground. In particular, if an irregular interface exists in the layered media, ground motion above this interface may be amplified. The mean powers of waves observed on the points at surface ground are not constant and an assumption of the stationary process does not hold true. We first simulated the surface ground motion of layered media that had an irregular interface by the Discrete Wave Number Method. The mean powers and cross correlations were examined with simulated waveforms, and the shape of the irregular interface was identified. The relative displacements between two observation points were modeled by the use of spatial correlation and autocorrelation functions by replacing a simple basin with two sets of layered media. キーワード（英）： - 記事区分： - 区分 　　　委員会論文集