Abstract
This study focus on the influence of the shear strength in unsaturated soil under different matric suction. 12 groups of GDS tests under different conditions were executed to analysis the relationship between net confining pressure and deviatoric stress. Then, used the unsaturated soil strength theory to calculated the shear strength of the weak interlayer. The results show that under the same confining pressure and unsaturated conditions, the deviatoric stress increase as the matric suction increases. The total cohesive force and the matrix suction of a linear relationship during the test process, the growth of the slope angle for the matrix suction is 6.6°. Finally, a modified formula for shear strength of the soft sandwich silty clay in this landslide was proposed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
