Study of improvement mechanism of compaction-widening piles by tamping in collapsible loess foundation

被引：0
|
作者：
Nie Qing-ke [1 ,2 ]
Liang Jin-guo [1 ]
Han Li-jun [1 ]
Li Hua-wei [1 ,2 ]
机构：
[1] Construct & Geotech Invest Co Ltd, Hebei Res Inst, Shijiazhuang 050031, Hebei, Peoples R China
[2] Res Ctr Geotech Engn Technol Hebei Prov, Shijiazhuang 050031, Hebei, Peoples R China
来源：
ROCK AND SOIL MECHANICS | 2011年 / 32卷 / 06期
关键词：
compaction-widening pile; collapsible loess; improvement mechanism; coefficient of collapsibility; spacing between piles;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
According to a practical case of composite foundation in collapsible loess foundation, the squeezing effects on compaction pile by tamping are studied. In field test, the undisturbed samples before treatment and the samples after treatment are first obtained; and then the physical parameters (e.g. void ratio, coefficient of collapsibility, coefficient of compactness, etc) are studied. Using the test results, the squeezing effects of the soil between piles with loading variation are discussed. Besides, the affecting scopes in horizontal and vertical directions are also analyzed. Finally, the reasonable spacing between piles which should be used in practical applications is discussed.
引用
收藏
页码：1819 / 1823
页数：5
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