16 - Shear Strength (Part 1) - University of Memphis for Students/16 - Shear Strength...4/13/2015 7...
Transcript of 16 - Shear Strength (Part 1) - University of Memphis for Students/16 - Shear Strength...4/13/2015 7...
4/13/2015
1
Shear Strength
Chapter 10
Mohr’s Failure Criterion
4/13/2015
2
Normal force, N
She
ar f
orce
, T
Coulomb’s Failure Criterion
Failureplane
N
N
T
T
cohesion
friction angle
Mohr‐Coulomb Failure Criterion
cohesion
friction angle
4/13/2015
3
Mohr‐Coulomb Failure Criterion
effective stress cohesion
effective friction angle
Mohr‐Coulomb Failure Envelope
A
C
B
4/13/2015
4
Mohr‐Coulomb Failure Envelope
Failure Plane Orientation
90° ′
4/13/2015
5
Failure Plane Orientation
Direct Shear Test
Chapter 10.4
4/13/2015
6
Direct Shear Test
Direct Shear Test
4/13/2015
7
Direct Shear Test
Shear Box
Porous Stones
Load Plates
Direct Shear Test
Shear Box
Porous Stones
Load Plates
4/13/2015
8
Direct Shear Test
Vertical LVDT Horizontal LVDT
Load Cell
WeightHanger
ShearBox
Direct Shear Test
dilation
contraction
4/13/2015
9
Direct Shear Test
Direct Shear Test
4/13/2015
10
Direct Shear Test
tan 0.4598 24.7°
4/13/2015
11
Direct Shear Test
Load Plate
LowerShear Box
UpperShear Box
Triaxial Shear Test
Chapter 10.5
4/13/2015
12
Triaxial Shear Test
Triaxial Shear Test
4/13/2015
13
Triaxial Shear Test
Triaxial Shear Test
4/13/2015
14
Consolidated‐Drained Test
Consolidated‐Drained Test
uc =3
Start ofConsolidationPhase
4/13/2015
15
Consolidated‐Drained Test
Consolidated‐Drained Test
4/13/2015
16
Consolidated‐Drained Test
Consolidated‐Drained Test
LOOSE SANDOR NC CLAY
DENSE SANDOR OC CLAY
4/13/2015
17
Consolidated‐Drained Test
4/13/2015
18
Consolidated‐Drained Test
Example
4/13/2015
19
Example
Example
4/13/2015
20
Example