Experimental Study on Improvement Mechanism of Vibroflotation in Unsaturated Silt

摘要：

In this paper, the foundation of one large thermal power plant, improved with stone columns, is taken as an example to discuss in detail the replacement mechanism of stone columns in unsaturated loessial silt by determination and analysis of volume of soil grains lost and by observation of the stone columns excavated. It is shown that 92％ soil grains are taken in the pore of stone columns and not pressed into surrounding soil. Therefore, the void ratio of surrounding soil does not decrease,and the improvement mechanism is replacement other than densification in the site.

关键词： Unsaturated silt Vibroflotation method Improvement mechanism

作者: WANG Shijie BAI Yongbing

作者单位: Research Institute of Geotechnical Engineering,China University of Mining & Technology,Beijing,P.R.C Agricultural University of Hebei,Baoding,P.R.China,071001

会议类型: 国际会议

会议名称: 2007 International Conference on Agriculture Engineering(2007年农业工程国际会议)

会议地点: 河北保定

会议语种:英文

页码: 403-407

在线出版日期: 2007-10-20（万方平台首次上网日期，不代表论文的发表时间）