The effect of consolidation path on undrained behaviour of sand - a DEM approach

被引：0

作者：

Nguyen, H. B. K. ^{[1
]}

Rahman, M. M. ^{[1
]}

Cameron, D. A. ^{[1
]}

Fourie, A. B. ^{[2
]}

机构：

[1] Univ South Australia, Mawson Lakes, SA, Australia

[2] Univ Western Australia, Crawley, WA, Australia

来源：

Computer Methods and Recent Advances in Geomechanics | 2015年

关键词：

LOOSE SAND; STATIC LIQUEFACTION; VOID RATIO; FINES; ONSET; K-0;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Simulations of the undrained triaxial behaviour of sand using 3D DEM are described. Three types of undrained behaviour: flow, limited flow and non-flow were observed in DEM simulations, as is commonly observed in most laboratory studies. Three consolidation paths: isotropic, anisotropic K = sigma(3)'/sigma(1)' = 0.50 and K-0 were assigned to observed their effect on undrained behaviour. The stress ratio, K = sigma(3)'/sigma(1)' during K-0 consolidation varied significantly with applied sigma(1)' which is not in line with the widely used Jaky equation. However, consolidation paths did not show a significant effect on undrained stress-strain and steady state behaviour. A unique steady state line was achieved irrespective of the consolidation history prior to undrained shearing.

引用

页码：175 / 180

页数：6

共 20 条

[1] Predicting onset of cyclic instability of loose sand with fines using instability curves [J].