摘要
用净平均应力和吸力等于常数、偏应力增大的三轴排水剪切试验,探讨了剪切对非饱和土水量变化的影响。试验结果表明,土-水特征曲线依赖于偏应力,改进了非饱和土中水量变化的本构关系,建立了含水量-吸力-净平均应力-偏应力形式的土-水特征曲线。
A series of triaxial drained shear tests with controlled net mean stress and suction equaling constants were conducted to study the effect of shear on soil-water characteristic curve of unsaturated soil. The test results show that the soil-water characteristic curve is dependent on deviatoric stress. The constitutive equation of water content change of unsaturated soil is modified. The soil-water characteristic curve including water content, suction, net mean stress and deviatoric stress is proposed.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第9期1451-1454,共4页
Rock and Soil Mechanics
基金
国家自然科学基金资助项目(编号:10372115)
关键词
非饱和土
剪切
偏应力
土-水特征曲线
unsaturated soil
shear
deviatoric stress
soil-water characteristic curve
