掲載雑誌（和）： 日本地震工学シンポジウム講演集 Vol： 4巻 年： 1975年 頁： 727-734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, Isac SAKAMOTO, Rokuro FUKUZAWA, Osamu CHIBA, Toshiaki HATORI, Masanobu TODO タイトル（英）： ROCKING VIBRATION CONSIDERING UP-LIFT AND YIELD OF SUPPORTING SOIL 抄録（英）：
Earthquake excitation causes rotational movements at the base of structures, especially of slender structures like apartment houses, in alternate directions. It is called "Rocking Vibration", on which many papers have been presented so far. But very few have been related to up-lift and elasto-plastic characteristics of supporting soil. In this paper, authors theoretically investigated the problem, and obtained relationships between the rotation angles of bases and overturning moments at the bases by dynamic response analysis using Winkler model. The results obtained are as follows: (1) Up-lift usually occurs before soil reaches its yield point. (2) In the analyzed example of eight-storied apartment house, up-lift occured under small horizontal loading much smaller than expected. (3) Under cyclic alternate loading, stiffness degrades in each cycle of large amplitude of rotation and energy dissipation is small even when soil reaches its yield point. (4) The results of response analysis using both a single-degree-of freedom system and a two-degree-of-freedom system show larger response than those of generally used non-linear systems. キーワード（英）： - 記事区分： - 区分 　　　委員会論文集