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平面ひずみ解析におけるバーチカルドレーンで改良した地盤のモデリング

発表形態:
原著論文
主要業績:
主要業績
単著・共著:
共著
発表年月:
2013年06月
DOI:
会議属性:
指定なし
査読:
有り
リンク情報:

日本語フィールド

著者:
柴 錦春、Bergado, D. T. and Shen, S.-L. 読み: チャイ ジンチュン、Bergado, D. T. and Shen, S.-L.
題名:
平面ひずみ解析におけるバーチカルドレーンで改良した地盤のモデリング
発表情報:
Ground Improvement, Proceedings of Institute of Civil Engineers, UK, Vol 166, No. 2, pp. 13-21. 巻: 166 号: 2 ページ: 12-21
キーワード:
バーチカルドレーン、地場改良、有限要素法解析
概要:
抄録:
The methods for modeling the effect of prefabricated vertical drain (PVD) in plane strain finite element analysis have been reviewed. The methods are classified into 4 groups of using: (1) solid element; (2) macro-element; (2) one-dimensional (1D) drainage element; and (4) equivalent vertical hydraulic conductivity (kve) to model the effect of the PVD, respectively. With the kve method, a PVD improved subsoil can be analyzed the same as for an unimproved one. For all the methods, the average degree of consolidation in a plane strain analysis is matched with that under an axisymmetric condition by modifying the hydraulic conductivity of subsoil, and/or the spacing or the discharge capacity of plane strain drains. Finally, the effectiveness of the kve method has been demonstrated by modeling a large scale model test of PVD consolidation. The numerical results indicate that the kve method performs as good as that of explicitly modeling the PVD consolidation under axisymmetric condition.

英語フィールド

Author:
Chai, J.-C., Bergado, D. T. and Shen, S.-L.
Title:
Modeling PVD improved ground in plane strain analysis
Announcement information:
Ground Improvement, Proceedings of Institute of Civil Engineers, UK, Vol 166, No. 2, pp. 13-21. Vol: 166 Issue: 2 Page: 12-21
Keyword:
Prefabricated vertical drain, ground improvement, finite element analysis
An abstract:
The methods for modeling the effect of prefabricated vertical drain (PVD) in plane strain finite element analysis have been reviewed. The methods are classified into 4 groups of using: (1) solid element; (2) macro-element; (2) one-dimensional (1D) drainage element; and (4) equivalent vertical hydraulic conductivity (kve) to model the effect of the PVD, respectively. With the kve method, a PVD improved subsoil can be analyzed the same as for an unimproved one. For all the methods, the average degree of consolidation in a plane strain analysis is matched with that under an axisymmetric condition by modifying the hydraulic conductivity of subsoil, and/or the spacing or the discharge capacity of plane strain drains. Finally, the effectiveness of the kve method has been demonstrated by modeling a large scale model test of PVD consolidation. The numerical results indicate that the kve method performs as good as that of explicitly modeling the PVD consolidation under axisymmetric condition.


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