掲載雑誌（和）：	日本地震工学シンポジウム論文集
Vol：	11巻
年：	2002年
頁：	831-836頁
著者（和）：	森　伸一郎，阿部　雅弘，曽我部　繁之
タイトル（和）：	芸予地震における大洲液状化アレ−観測地点の地盤の非線形挙動
抄録（和）：	-
キーワード（和）：	液状化アレー，2001芸予地震，非線形
掲載雑誌（英）：	THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
著者（英）：	Shin’ichiro Mori, Masahiro Abe, Shigeyuki Sogabe
タイトル（英）：	NONLINEAR SEISMIC BEHAVIOR OF GROUND AT OHZU LIQUEFACTION ARRAY OBSERVATION SITE DURING THE GEIYO EARTHQUAKE
抄録（英）：	This paper describes the outline of observed records by liquefaction array observation system at Ohzu, Ehime during the 2001 Geiyo earthquake and clarifies properties of the records analyzed at the standpoint of nonlinear soil behavior. Conclusions are as follows: 1) A value of excess pore water pressure at the depth of 14.5 m generated up to around 10 % in ratio to initial overburden pressure. 2) Displacement at the depth of 14.5 m started to have a trend from the timing of the pore water pressure there coming up to the peak value. 3) The first predominant period of ground got longer during the main event due to strain-dependant nonlinearity of soil. The change of the period derives the degradation of rigidity of soil with 50 to 70%.
キーワード（英）：	ground motion, nonlinearity, liquefaction array observation, pore water pressure, 2001Geiyo earthquake
記事区分：	-
区分：	委員会論文集