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タイトル: | ひずみ空間多重せん断モデルによる粘性土の力学挙動の表現 |
その他のタイトル: | Modeling of Clay through Strain Space Multiple Mechanism Model |
著者: | 井合, 進 上田, 恭平 https://orcid.org/0000-0001-6202-6431 (unconfirmed) |
著者名の別形: | IAI, Susumu UEDA, Kyohei |
キーワード: | 粘性土 異方性 ひずみ速度効果 圧密沈下 地震応答 clay anisotropy strain rate effect consolidation earthquake response |
発行日: | Jun-2016 |
出版者: | 京都大学防災研究所 |
誌名: | 京都大学防災研究所年報. B |
巻: | 59 |
号: | B |
開始ページ: | 92 |
終了ページ: | 114 |
抄録: | The strain space multiple mechanism model, originally developed for cyclic behavior of granular materials such as sand, is adapted for idealizing stress strain behavior of clay under monotonic and cyclic loads. The proposed model has advantages over the conventional elasto-plastic models of Cam-clay type in the facts that (1) arbitrary initial K0 state can be analyzed by static gravity analysis, (2) stress induced anisotropy (i.e. effect of initial shear) in the steady (critical) state can be analyzed based on Shibata’s dilatancy model (1963), (3) over-consolidated clay can be analyzed by defining the dilatancy at the steady state based on over-consolidation ratio, (4) strain rate effects for monotonic and cyclic shear can be analyzed based on Isotach model proposed by Tatsuoka et al (2002) in the strain rate ranging from zero to infinity in addition to the conventional strain rate effects of secondary consolidation (creep) type. Performance of the proposed model is demonstrated through simulation of drained/undrained behavior of clay under monotonic and cyclic loading. |
URI: | http://hdl.handle.net/2433/217310 |
関連リンク: | http://www.dpri.kyoto-u.ac.jp/nenpo/nenpo.html |
出現コレクション: | Vol.59 B |
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