Numerical simulation triaxial tests for coarse-grained soil and preliminary study of initial fabric of sample grain

被引：0

作者：

Wang Guang-jin ^{[1
,3
]}

Yang Chun-he ^{[1
,2
]}

Zhang Chao ^{[2
]}

Ma Hong-ling ^{[2
]}

Mao Hai-jun ^{[2
]}

Hou Ke-peng ^{[3
]}

机构：

[1] Chongqing Univ, Coll Resources & Environm Sci, Chongqing 400044, Peoples R China

[2] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China

[3] Kunming Univ Sci & Technol, Fac Land Resources Engn, Kunming 650093, Yunnan, Peoples R China

来源：

ROCK AND SOIL MECHANICS | 2011年 / 32卷 / 02期

关键词：

coarse-grained soil; initial fabric of grain; cellular automaton; shear band; gravel contents;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The initial fabric of sample grain is a hard artificial controlling factor in the laboratory triaxial tests of coarse-grained soil. Based on cellular automata method, combining the laboratory triaxial tests of coarse-grained soil developed the HHC-CA model which generated the coarse-grained soil samples of different initial fabrics of grain to characterize the heterogeneous and random distribution of coarse-grained soil grain group. Then by means of the fast lagrangian analysis of continua in three dimensions (FLAC(3D)), conducting triaxial numerical simulation tests of coarse-grained soil and discussing the relationship between the gravel contents of sample shear band and samples and internal friction angle. Numerical simulation results indicate that the relationship between internal friction angle of coarse-grained soil and gravel contents of samples shear band were increasing function in the same size grading. According to the increasing of samples gravel contents, the internal friction angle might reduce, but the mean internal friction angle significantly increases with the increment of samples gravel contents.

引用

页码：585 / 592

页数：8