教員活動データベース

フローティングコラムで改良した軟弱地盤の圧密沈下予測

発表形態：: 招待講演・特別講演（学会シンポジウム等での講演を含む）
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：: 国際会議（国内開催を含む）
査読：: 有り
リンク情報：

日本語フィールド

著者：

柴　錦春・Supasit Pongsivasathit 読み: チャイジンチュン、Supasit Pongsivasathit

題名：

フローティングコラムで改良した軟弱地盤の圧密沈下予測

発表情報：

地球温暖化の影響を考慮した地盤工学、地盤改良、ジオシンセティックスに関する国際シンポジウム論文集ページ: 107-115

キーワード：

地盤改良、圧密、沈下

概要：

フローティングコラムで改良した軟弱地盤の圧密度、沈下量計算法を提案し、有限要素法解析、室内モデル試験、現場データによってその有効性を確認した。

抄録：

英語フィールド

Author：

Jin-Chun Chai and Supasit Pongsivasathit

Title：

PREDICTION OF CONSOLIDATION SETTLEMENTS OF FLOATING COLUMN IMPROVED SOFT CLAYEY SUBSOIL

Announcement information:

Proceedings of Inter. Symp. On Geotechnical Eng., Ground Improvement and Geosynthetics for Sustainable Mitigation and Adaptation to Climate Change including Global warming, Bangkok Page: 107-115

Keyword：

Ground improvement, consolidation, settlement

An abstract：

A method of predicting the consolidation settlement-time curve of floating soil-cement column improved soft clayey subsoil has been established. The degree of the consolidation (U(t)) of the system is calculated by the double soil-layer consolidation theory, and the methods for evaluating the equivalent hydraulic conductivity (k) and the coefficient of volume compressibility (mv) of the part of the column improved layer have been proposed. The effectiveness of the method was verified by comparing predictions with the results of finite element analysis (FEA) using a unit cell model. It is suggested that the final consolidation settlement (sf) can be calculated by a method of treating a part of the column improved layer as an unimproved layer. Then the consolidation settlement-time curve can be estimated using U(t) and sf. By comparing the predicted results with the measurements of laboratory model test, the effectiveness of the proposed methods has been verified. It is suggested that the methods can be used for design the soft clayey subsoil improvement using floating soil-cement columns.