Strain-softening behaviour of sand in strain path testing under plane-strain conditions

被引：0
作者：
D. Wanatowski
J. Chu
R. S.-C. Lo
机构：
[1] The University of Nottingham,Nottingham Centre for Geomechanics, School of Civil Engineering
[2] Nanyang Technological University,School of Civil and Environmental Engineering
[3] University of New South Wales,School of Aerospace, Civil and Mechanical Engineering
[4] Australian Defence Force Academy,undefined
来源：
Acta Geotechnica | 2008年 / 3卷
关键词：
Failure; Laboratory tests; Plane-strain; Sands; Shear strength; Strain softening;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Experimental data are presented in this paper to study the strain-softening behaviour of sand under plane-strain conditions. K0 consolidated strain path tests were conducted using a new plane-strain apparatus. The stress–strain behaviour of medium dense sand under plane-strain conditions was characterized. The test results show that the occurrence of pre-failure strain softening under plane-strain conditions is affected by the void ratio, the strain increment ratio and the initial effective confining stress. This is consistent with previous findings established under axisymmetric conditions. However, a pre-failure strain-softening behaviour in plane-strain tests conducted under high-confining stresses may consist of three stages, namely, material softening, banding softening, and ultimate state. This observation is different from that in triaxial tests where banding softening does not normally occur.
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页码：99 / 114
页数：15
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