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改良したソイルセメントコラム打設による地盤の側方変形予測法

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:
2009年12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、Carter, J. P.,三浦哲彦 and Zhu, H.-H. 読み: チャイ ジンチュン、Carter, J. P.,ミウラ ノリヒコ and Zhu, H.-H.
題名:
改良したソイルセメントコラム打設による地盤の側方変形予測法
発表情報:
アメリカ土木学会、地盤・環境地盤工学誌 巻: 135 号: 12 ページ: 1836-1845
キーワード:
地盤改良、空洞拡張、側方変位
概要:
柱状・球状空洞拡張理論に基づき、著者が提案したソイルセメントコラムの打設に伴う地盤の側方変形予測法を修正し、その有効性について、世界で報告された事例の実測値を用いて検証した。
抄録:

英語フィールド

Author:
Chai, J.-C., Carter, J. P., Miura, N. and Zhu, H.-H.
Title:
Improved prediction of lateral deformations due to installation of soil-cement columns
Announcement information:
Journal of Geotechnical and Geoenvironmental Engineering, ASCE Vol: 135 Issue: 12 Page: 1836-1845
Keyword:
Ground improvement, cavity expansion, lateral displacement
An abstract:
A modified method is proposed for predicting the lateral displacements of the ground caused by installation of soil-cement columns. The method is a combination of the original method derived on the basis of the theory of cylindrical cavity expansion in an infinite medium, and a correction function introduced to consider the effect of the limited length of the columns. The correction function has been developed by comparing the solutions obtained using the spherical and the cylindrical cavity expansion theories for a single column installation. Both the original and the modified method have been applied to a case history reported in the literature which involves clay soils and the predictions are compared with field measurements. The advantage of the modified method over the original method is demonstrated. Finally, the modified method has also been applied to a case history involving loose sandy ground, and the calculations show that the method can also be used for this type of soil provided that appropriate consideration is given to the volumetric strain occurring in the plastic zone of soil surrounding the soil-cement columns.


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