This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Project:
LMMG
Geotechnical Engineers
www.LMMG.CLTotal depth: 36.00 m, Date: 14-04-2014
Surface Elevation: 0.00 m
Coords: X:0.00, Y:0.00
Cone Type: Uknown
Cone Operator: Uknown
CPT: CPT-01
Location:
Cone resistance
Tip resistance (MPa)
5040302010
Depth
(m
)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Cone resistance Pore pressure
Pressure (kPa)
4,0003,0002,0001,0000
Depth
(m
)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Pore pressureSleeve friction
Friction (kPa)
1,000500
Depth
(m
)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Sleeve friction
Cross correlation between qc & fs
20181614121086420-2-4-6-8-10-12-14-16-18-20
1.2
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-2
Cross correlation between qc & fs
The plot below presents the cross correlation coeficient between the raw qc and fs values (as measured on the field). X axes presents the lagdistance (one lag is the distance between two sucessive CPT measurements).
CPeT-IT v.1.7.6.42 - CPTU data presentation & interpretation software - Report created on: 14-04-2014, 18:16:30 1
Project file:
Project:
LMMG
Geotechnical Engineers
www.LMMG.CLTotal depth: 36.00 m, Date: 14-04-2014
Surface Elevation: 0.00 m
Coords: X:0.00, Y:0.00
Cone Type: Uknown
Cone Operator: Uknown
CPT: CPT-01
Location:
SBT plot
Friction Ratio, Rf (%)
0.1 1 10
Cone r
esis
tance,
qc/p
a
1
10
100
1,000
SBT plot Bq plot
Pore pressure ratio, Bq
1.401.201.000.800.600.400.200.00-0.20
Corr
ecte
d c
one r
esis
tance,
qt
0.1
1
10
100
Bq plot
SBT - Bq plots
SBT legend
1. Sensitive fine grained
2. Organic material
3. Clay to silty clay
4. Clayey silt to silty clay
5. Silty sand to sandy silt
6. Clean sand to silty sand
7. Gravely sand to sand
8. Very stiff sand to clayey sand
9. Very stiff fine grained
CPeT-IT v.1.7.6.42 - CPTU data presentation & interpretation software - Report created on: 14-04-2014, 18:16:31 2
Project file:
Project:
LMMG
Geotechnical Engineers
www.LMMG.CL
Location:
Total depth: 36.00 m, Date: 14-04-2014
Surface Elevation: 0.00 m
Coords: X:0.00, Y:0.00
Cone Type: Uknown
Cone Operator: Uknown
CPT: CPT-01
SBTn plot
Normalized Friction Ratio, Fr (%)
0.1 1 10
Norm
alized C
one R
esis
tance,
Qtn
1
10
100
1,000
SBTn plot Normalized Bq plot
Pore pressure ratio, Bq
1.401.201.000.800.600.400.200.00-0.20-0 .40
Norm
alized c
one r
esis
tance,
Qtn
1
10
100
1,000
Normalized Bq plot
SBTn legend
1. Sensitive fine grained
2. Organic material
3. Clay to silty clay
4. Clayey silt to silty clay
5. Silty sand to sandy silt
6. Clean sand to silty sand
7. Gravely sand to sand
8. Very stiff sand to clayey sand
9. Very stiff fine grained
SBT - Bq plots (normalized)
CPeT-IT v.1.7.6.42 - CPTU data presentation & interpretation software - Report created on: 14-04-2014, 18:16:31 3
Project file:
Project:
LMMG
Geotechnical Engineers
www.LMMG.CLTotal depth: 36.00 m, Date: 14-04-2014
Surface Elevation: 0.00 m
Coords: X:0.00, Y:0.00
Cone Type: Uknown
Cone Operator: Uknown
CPT: CPT-01
Location:
Schneider et al (2008) Soil Class.
Du2/sig'v
109876543210-1-2
Q =
qcnet/
sig
'v
1
10
100
1,000
Schneider et al (2008) Soil Class.
2
3
1a
1b1c
Transition
al Soils
Silts an
d "Low Ir" Cla
ys
Clays
Sensitiv
e Clays
Essentialy
Drained
Sands
Schneider et al (2008) Soil Class.
Du2/sig'v
0.1 1 10 100
Q =
qcnet/
sig
'v
1
10
100
1,000
Schneider et al (2008) Soil Class.
2
3
1a
1b
1c
Transitional Soils
Silts and "Low Ir" Clays
Clays
Sensitive Clays
Essentialy
Drained
Sands
Bq plots (Schneider)
CPeT-IT v.1.7.6.42 - CPTU data presentation & interpretation software - Report created on: 14-04-2014, 18:16:31 4
(applicable only to SBTn: 1, 2, 3, 4 and 9 or Ic > Ic_cutoff)
(applicable only to SBTn: 1, 2, 3, 4 and 9 or Ic > Ic_cutoff)
(applicable only to SBTn: 1, 2, 3, 4 and 9or Ic > Ic_cutoff)
References
• Robertson, P.K., Cabal K.L., Guide to Cone Penetration Testing for Geotechnical Engineering, Gregg Drilling & Testing, Inc., 5th Edition, November
2012
Presented below is a list of formulas used for the estimation of various soil properties. The formulas are presented in SI unit system and assumethat all components are expressed in the same units.
• Robertson, P.K., Interpretation of Cone Penetration Tests - a unified approach., Can. Geotech. J. 46(11): 1337–1355 (2009)
:: In situ Stress Ratio, Ko ::
'sinO OCR)'sin(1K ϕϕ ⋅−=
:: Soil Sensitivity, St ::
r
St
F
NS =
(applicable only to SBTn: 1, 2, 3, 4 and 9 or Ic > Ic_cutoff)
(applicable only to SBTn: 1, 2, 3, 4 and 9 or Ic > Ic_cutoff)
:: Effective Stress Friction Angle, φ' (°) ::
( )tq0.121q
' logQB0.3360.256B29.5φ +⋅+⋅⋅°=
(applicable for 0.10<Bq<1.00)
CPeT-IT v.1.7.6.42 - CPTU data presentation & interpretation software - Report created on: 14-04-2014, 18:16:31Project file: