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In-Situ 2001 - Bali
Specialized In-Situ Tests
– Lateral Stress Cone (LS-CPT)– Cone Pressuremeter (CPMT)– Vibrocone Penetrometer for
Liquefaction– Self-Boring Pressuremeter (SBP)– Iowa Stepped Blade (ISB)– Borehole Shear Test (BHT)– Vision Cone (VisCPT)– Torsional Impulse Shear Device
– Push-in Total Stress Cells (TSC)– Seismic Piezocone Pressuremeter
(SCPMTu)
Research Directions - Vibrocone
Electro-Vibrocone with Piezo-Actuator Driver and Dual-Element Piezocone Penetrometer
Electro-Vibrocone with Piezo-Actuator Driver and Dual-Element Piezocone Penetrometer
Vibrocone Test Results
Vibrocone Data from Paired Soundings at Historic Liquefaction Site,Thompson Industries, Charleston, South Carolina
Vibrocone Data from Paired Soundings at Historic Liquefaction Site,Thompson Industries, Charleston, South Carolina
0
1
2
3
4
5
6
7
8
9
10
0 5 10 15 20
qc (MPa)
De
pth
BG
S (
m)
0
1
2
3
4
5
6
7
8
9
10
0 200 400 600 800
u1 (kPa)
Dynamic
Static
qtqt
u1u1
fsfs
Constant Rate of 20 mm/s
Constant Rate of 20 mm/s
DynamicMotion
DynamicMotion
In-Situ 2001 - Bali
Pile Capacity from CPT
• Rational Methods (“Indirect”) to assess end bearing & side friction
• Direct Methods - Scale up measured CPT fs and qt to Pile
• Interface roughness effects on measured sleeve (Frost & DeJong, 2001) Multi-Friction Sleeve Penetrometer
In-Situ 2001 - Bali
Oh the Places
You’ll Go (Dr. Seuss)“Be Glad you don’t work
on the Bunglebung
Bridgethat they’re
building across
Boober Bay at Bumm Ridge”
In-Situ 2001 - Bali
Multi-Friction Sleeved PenetrometerNew Soil Classification Charts
fs1-fs3
fsCPT/fs4
qt/fs1*fs2*fs3
Brown Dirtwith StonesClays or Silts
or Maybe Sands
Loams
Begemann
In-Situ 2001 - Bali
GeoMusic for CANLEXI can’t Get No
Liquefaction
I can’t get no
No Liquefaction
World's Largest Penetrometer
In-Situ 2001 - Bali
Innovative In-Situ Devices
• Self-Boring Pressuremeter
• Self-Boring Cones - (No Rods or Trucks)
• Cordless Cone •Memocone•Audio-Cone
Beerless butBearded Fahey