Evaluation of the overall strength of cement-treated soil ground with spatial variability

具有空间变异性的水泥处理土基整体强度评价

• 批准号: 22560505
• 负责人: NAMIKAWA Tsutomu
• 金额: $ 2.75万
• 依托单位: Shibaura Institute of Technology (2011-2012)Kobe City College of Technology (2010)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560505/
• 关键词: 土質力学; 地盤工学; 地盤改良; セメント改良土; ばらつき; 自己相関; 強度

Laboratory tests and finite element analyses were conducted to develop the design procedure for evaluating the overall strength of a cement-treated column where strength varies spatially. Unconfined compression tests were mainly carried out for the sample consisting of different strength parts. The comparison between the laboratory and numerical results indicates that the finite element method used in this study can describe the behavior of the cement-treated sample consisting of different strength parts. The finite element analyses are conducted to evaluate the behavior of a full scale column where strength varies spatially. The numerical results suggest that the autocorrelation distance affects significantly the overall strength of the full scale column. The probability of failure of the full scale column for a compression load is calculated from the numerical results.

进行了实验室测试和有限元分析，以开发用于评估强度随空间变化的水泥处理柱的整体强度的设计程序。无侧限压缩试验主要针对不同强度部件组成的样品进行。实验室结果与数值结果的比较表明，本研究中使用的有限元方法可以描述由不同强度部件组成的水泥处理样品的行为。进行有限元分析是为了评估强度随空间变化的全尺寸柱的行为。数值结果表明自相关距离显着影响满尺度柱的整体强度。根据数值结果计算全尺寸柱在压缩载荷下失效的概率。

项目成果

Numerical Study of Bending Strength of Cement-treated Column with Spatial Variability

水泥处理柱抗弯强度空间变异性的数值研究

• 发表时间: 2011
• 期刊: Proceedings of the International Conference on Advances in Geotechnical Engineering
• 作者: 宮崎大輔・杉原裕司;他3名;Tsutomu Namikawa;杉原裕司,中川大輔,Koji Shiono;Tsutomu Namikawa
• 通讯作者: Tsutomu Namikawa

Unconfined compression behavior of cement-treated soil sample consisting of different strength parts

不同强度部分水泥处理土样的无侧限压缩行为

• 发表时间: 2013
• 作者: Namikawa T.;Hiyama S.;Nakashima Y
• 通讯作者: Nakashima Y

強度の確率分布の違いが改良柱の圧縮挙動に与える影響の評価

强度概率分布差异对改进柱抗压性能影响的评估

• 发表时间: 2012
• 作者: 檜山将太;並河努;佐伯拓朗・杉原裕司・安東卓哉;並河努
• 通讯作者: 並河努

Numerical Study of Bending Strength of Cement-treated Column with Spatial Variability.

具有空间变异性的水泥处理柱抗弯强度的数值研究。

• 发表时间: 2011
• 作者: 杉原裕司・安東卓哉;他3名;並河努;中川大輔,杉原裕司;並河努;Namikawa T
• 通讯作者: Namikawa T

Effects of Spatial Correlation on the Compression Behavior of a Cement-Treated Column

• DOI: 10.1061/(asce)gt.1943-5606.0000850
• 发表时间: 2013-08-01
• 期刊: JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
• 影响因子: 3.9
• 作者: Namikawa, Tsutomu;Koseki, Junichi
• 通讯作者: Koseki, Junichi