ー
Memory of Osaka Institute of Technology, Series A Vol. 43,
No.I (1998) pp. 27 ~53
地震観測記録に基づく地盤
一杭ー建物系の動的相互作用
＊三枝 大介＊＊・大場 新太郎
工学部 建築学科 (1998年5月30日 受理）
Dynamic Interaction of Soil-Pile-Structural system
based on Earthquake Observation Records
by
Daisuke SAE GUSA and Shin taro OHBA Department of Architecture, Faculty of Engineering
(Manuscript received May 30, 1998)
Abstract
This paper mainly discusses the dynamic behavior of the soil-pile-structure relationships, based on observation records taken from subsoil, pile foundations and the upper structure of a 16 story building during the May 28th 1994 Shigaken-Chubu Earthquake as well as the 1995 Hyogoken-Nanbu earthquake and aftershocks.
The results of the analysis of these records are summarized as follows:
1) The response of the building during strong ground motion shows certain non-linear behavior; The natural period during the main shock is approximately 1.4 times longer than that of the microtremor before the main shock.
2) The pile foundations are more significantly influenced by ground motion than by upper structural vibrations.
'.?) In situations where the hypocenter was in close proximity to the building, the first floor demonstrates vertical vibration without rotational motion.
＊ 平成9年日本建築学会大会学律講演会（平成9年9月、 日本大学）において関連論文口頭発表
