Environmental Engineering Reference
In-Depth Information
TABLE 3.33
Laboratory Methods for Determining Dynamic Soil Properties
a
Stress or Strain Conditions
Properties
Test Conditions
Test and Reference
Measured
b
Initial
Dynamic
Strain Amplitude
Low frequency
Cyclic triaxial (Seed and
E
,
D
; stress vs.
Axisymmetric
Pulsating axial or confining
10
4
to 10
1
Chan, 1966; Castro, 1969)
strain: strength
consolidation
stress: constant-amplitude stress
Cyclic torsion (Zeevaert,
G
,
D
, stress vs.
Axisymmetric
Pulsating shear stress, constant-
10
4
to 10
2
1967; Hardin and
strain
consolidation
amplitude stress or free
Drnevich, 1972a, b)
vibration
Cyclic simple shear (Seed
G
,
D
, stress vs.
K
s
consolidation
Pulsating shear stress: constant-
10
4
to 3
10
2
and Wilson, 1967)
strain: strength
amplitude stress (strain) or free
vibration
High frequency
Ultrasonic (Lawrence,
c
p
or
c
s
Axisymmetric
Dilation or shear, single pulse
10
5
1965; Nacci and Taylor,
consolidation
wave
1967)
Resonant column (Afifi,
c
p
or
c
s
,
E
or
G
;
D
Uniform or
Pulsating axial or shear
10
6
to 10
2
1970)
axisymmetric
(torsional) stress: constant-
consolidation
amplitude strain
a
From
Seismic Risk and Engineering Decisions,
Lomnitz and Rosenblueth, Eds., Elsevier, Amsterdam, 1976, ch. 4.
b
E
dynamic Young's modulus,
G
dynamic shear modulus,
D
damping ratio,
c
p
compression-wave velocity,
c
s
shear-wave velocity.
