Study on residual strain of frozen soil and CT analysis under cyclic loading of variable amplitudes

被引：0

作者：

Xu Chun-hua ^{[1
]}

Xu Xue-yan ^{[1
,2
]}

Shen Xiao-dong ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Heilongjiang, Peoples R China

[2] Chinese Acad Sci, CAREERI, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China

来源：

ROCK AND SOIL MECHANICS | 2005年 / 26卷 / 04期

关键词：

frozen soil; formation conditions of residual strain; structural hair cracking; seismic thaw settlement;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

By means of the experimental data from dynamic triaxial stress-strain test of variable cyclic amplitude for frozen soil, the formative conditions of residual strain on frozen silt clay are studied. It is concluded that the residual strain of frozen soil decreases as the temperature falls, increases with the vibratory times at the same temperature level; and the change of water content has a little effect on it, through the relationships of residual strain versus temperature, vibratory time and water content. The variation laws of structural hair cracking and the characteristics of density for frozen soils are analyzed quantitatively based on the CT scanning results of frozen silt clay before and after dynamic triaxial test. And the formation mechanism of seismic-thaw-settlement of frozen soils is interpreted.

引用

页码：572 / 576

页数：5