LIN Qing-hui, YAN Jia-jia, DONG Mei, et al. Influence of principal stress direction and intermediate principal stress parameter on the small strain stiffness of reconstituted loess[J]. 2018, 39(4): 1369-1376.
LIN Qing-hui, YAN Jia-jia, DONG Mei, et al. Influence of principal stress direction and intermediate principal stress parameter on the small strain stiffness of reconstituted loess[J]. 2018, 39(4): 1369-1376.DOI: 10.16285/j.rsm.2016.1091.
A series of tests was carried out on reconstituted loess with a hollow cylinder apparatus equipped with high precision strain sensors with fixed principal stress direction. The mean principal stress p
principal stress direction ? and intermediate principal stress coefficient b were constant during shearing. A total of 21 specimens in 4 groups of experiments
including 3 groups with different main stress direction angles and 1 group with main stress coefficients
were completed. The stress
strain
strength
and small strain (2%. The initial stiffness was higher at the beginning of shearing and decreased quickly with the increasing of shear strain when shear strain >0.02%. Stiffness varying with shear strain could be simulated accurately with the exponential function.