掲載雑誌（和）： 日本地震工学シンポジウム講演集 Vol： 5巻 年： 1978年 頁： 489-496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）： Takuji KOBORI, Yuzo SHINOZAKI タイトル（英）： DYNAMIC SOIL-STRUCTURE INTERACTION UNDER A TOPOGRAPHICAL SITE CONDITION 抄録（英）：
This paper presents a two-dimensional dynamic response of a structure with an embedded rigid semi-cylindrical footing welded to a semi-cylindrical alluvial valley. The soil-structure system under a topographical site condition is subjected to a nonvertically propagating seismic SH wave. The unknown scattered waves from the rigid footing and the alluvial valley are at first represented as infinite series in terms of Hankel and harmonic functions. Transforming the scattered waves into appropriate polar coordinates with the application of not only Graf's Addition Theorem but also a Fourier expansion method in order to satisfy the given boundary conditions, we get infinite simultaneous equations with respect to unknown coefficients of the scattered waves. Two physical quantities requisite for evaluating the dynamic response of the soil-structure system, I.e., the impedance function and the "driving force" of the rigid footing, are obtained by solving numerically the infinite simultaneous equations. It is shown that the displacement amplitude of the structure is independent of the incidence angle of SH waves when the structure is located at the center of the alluvial valley showing sharp peaks at the resonant frequencies of the alluvial valley and that the more closely the structure is located at the edge of the alluvial valley, the more pronounced the effects of incidence angle of SH waves on the displacement amplitude of the structure become. キーワード（英）： - 記事区分： - 区分 　　　委員会論文集