A MODEL FOR CLAY USING MODIFIED STRESS UNDER VARIOUS LOADING CONDITIONS WITH THE APPLICATION OF SUBLOADING CONCEPT
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概要
- 論文の詳細を見る
In the conventional approach of elastoplastic modeling, using the invariants of ordinary stresses and strain increments can not properly consider the effect of intermediate principal stress on the strength and dilatancy of soils. A previously introduced modeling approach using modified stress (t_<ij>) can express the strength and dilatancy behavior of normally consolidated clay under generalized three-dimensional stress conditions. It has been verified that this modified stress approach closely simulates soil behavior under monotonic loading conditions. To express stress induced anisotropy, a kinematic hardening (in the stress ratio space) model for clay using modified stress has been proposed, which over predicts volumetric strain and does not show stabilization of strain during cyclic loading. To rectify those problems the evolution rule of the rotational variable has been modified and a subloading surface has been introduced in the model proposed in this paper. The applicability of the proposed model on normally or overconsolidated clay under monotonic or cyclic loading conditions is verified using triaxial, true triaxial and torsional shear tests.
- 社団法人地盤工学会の論文
- 1999-12-15
著者
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山田 正太郎
Fukuoka Univ. Fukuoka Jpn
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CHOWDHURY EHSANUL
Research Associate, Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Sho
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中井 照夫
Professor of Systems Management and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-k
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多和田 雅之
Engineer, Nippon Telegraph and Telephone Corporation (Formerly graduate student of Nagoya Institute
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山田 正太郎
Graduate student, Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa
関連論文
- 修正応力空間に下負荷曲面を導入した粘土の構成モデル(『地盤工学会論文報告集』Vol.39,No.6 (1999年12月発行)掲載論文の概要)
- A MODEL FOR CLAY USING MODIFIED STRESS UNDER VARIOUS LOADING CONDITIONS WITH THE APPLICATION OF SUBLOADING CONCEPT