Study of undisturbed loess stress-strain relation during CT test

被引：0
|
作者：
Wang Zhao-yang [1 ]
Xu Qiang [1 ]
Ni Wan-kui [2 ]
机构：
[1] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
[2] Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Shaanxi, Peoples R China
来源：
ROCK AND SOIL MECHANICS | 2010年 / 31卷 / 02期
关键词：
undisturbed loess; damage; stress-strain relation;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The stress-strain relation of undisturbed loess during triaxial shear test is studied by using real-time computerized tomography(CT) scanning. The curves of loesses Q(2) and Q(3) are analyzed; and the method how to determine the initial damage stress and strain threshold value is proposed. Based on analyzing the test results, it is pointed out that the loess Q(2) will be damaged easily under low confining pressure; and its damage strain threshold value is lower than that of loess Q(3). At last, damage variable formula defined by CT values and the relationship of the damage variable, axial strain and deviatoric stress is given.
引用
收藏
页码：387 / +
页数：6
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