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フルテキストURLKJ00004351155.pdf ( 957.8KB ) 公開日 2010-04-19
タイトルLiquefaction of saturated sand deposits under nonuniform vertical stresses
作成者Yamamoto, Tetsuro
Ohara, Sukeo
Ishikawa, Mitsuo
作成者ヨミヤマモト, テツロウ
オオハラ, スケオ
イシカワ, ミツオ
作成者別表記山本, 哲朗
大原, 資生
作成者所属山口大学工学部
内容記述(抄録等)In order to clarify the characteristics of liquefaction and liquefaction-induced settlement of saturated sand deposits of which the vertical stresses are different partially such as those below and near overburden structures, a series of shaking table tests are performed on the model sand layer prepared in three Kjellman's type simple shear boxes. The model sand layer consists of three saturated sand layers of which the effective vertical stresses σ'_<vo> are 10.4kPa, 30.0kPa and 49.6kPa respectively, and is called model (1) hereafter. Also, the same tests are carried out on four models (2) to (5) consisting of two sand layers having different RVS-values. Here RVS=(σ'_<vo>)_s / (σ'_<vo>)_1, in which (σ'_<vo>)_s and (σ'_<vo>)_1 represent lower and higher vertical stresses of two respective sand layers. It is found from the tests that in the case of seismic coefficient k_h≧0.15, irrespective of the RVS-values and in the case of k_h<0.15 and RVS≧0.5, all sand layers of the models liquefied almost simultaneously. On the contrary, in the case of k_h<0.15 and RVS<0.5, the sand layer of (σ'_<vo>)_s liquefied easily due to the effect of pore water pressure induced in the sand layer of (σ'_<vo>)_1, though the sand layer of (σ'_<vo>)_1 didn't occur to liquefy. Namely, it was concluded that the liquefaction characteristics of such model sand layers were affected by the RVS-value and the acceleration level of vibration. Furthermore, it is shown that the amount of the liquefaction-induced settlement of the model sand layer increases remarkably in the range of lower vertical stresses and takes almost a constant value as the vertical stresses increase.
本文言語eng
主題工学
資料タイプtext
ファイル形式application/pdf
出版者山口大学工学部
出版者ヨミヤマグチ ダイガク コウガクブ
NII資料タイプ紀要論文
ISSN0386-3433
NCIDAA0086073X
学内刊行物(紀要等)Technology reports of the Yamaguchi University
掲載誌名Technology reports of the Yamaguchi University
5
2
開始ページ71
終了ページ86
発行日1993-12
著者版/出版社版出版社版
備考本文データは国立情報学研究所において電子化したものである
リポジトリIDKJ00004351155
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/KJ00004351155