geotechnical field and laboratory testing
TRANSCRIPT
GEOTECHNICAL GROUP
http://www.umich.edu/~geotech/
Information Package
GEOTECHNICAL FIELD AND LABORATORY
TESTING FACILITIES
• Our Testing Legacy ……………………………..….3
• Field Testing Facilities……………………………..4
• Laboratory Testing Facilities…………..………..5
• Laboratory Testing Equipment…………………7
• Field Testing Equipment …………..………..…10
• Contacts …………………………………..………..…12
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University of Michigan’s Geotechnical Testing Legacy
The Geotechnical Group at the University of Michigan has a very long legacy in field and laboratory geotechnical testing that spans many decades and originates even before the birth of soil mechanics.
In early 1930s Prof. William Housel built some very unique devices, such as the double ring shear device, the stabilometer and the miniature penetrometer.
Profs. Frank E. (Bill) Richart Jr. and Richard Woods and their students led the way in soil dynamics testing and soil characterization both in the field and the laboratory.
Many of these devices can still be viewed by visitors in our “geotechnical museum.”
Today, the geotechnical group continues this legacy with a very large variety of unique field, laboratory and computational testing capabilities that are used to advance the State of the Art and Practice in Geotechnical Engineering.
Wu, Chi-Kao,(1986) Large Diameter Resonant Column Apparatus for
Coarse-Grained Material,
Drnevich Torsional Shear and Resonant Column
Hardin high amplitude Resonant Column
Housel’s double ring shear
Geotechnical Field Testing Facilities
The “bottomless, clean sand” pit is a 20 ft in diameter indoor sand pit filled with Ottawa sand to a depth of 12 ft that can be used for physical modeling. Previous projects include lateral loading of piles, and geophysics verification testing.
The Cone Penetration Testing Rig is a 7 ton CPT rig for classroom instruction and research.
The Field Testing Storage Facility houses the geotechnical field testing
equipment as well as the Cone Penetration Rig.
The University of Michigan CPT rig
Field Storage Facility CPT Rig testing at Field Testing Site
Partial view of the indoor sand pit excavated
Geotechnical Laboratory Testing Facilities
The F.E. Richart Jr. Soil Dynamics Laboratory
is a fully equipped geotechnical laboratory with specialized testing
equipment to evaluate the static and dynamic properties of soils.
F. E. Richart Jr. Soil Dynamics Laboratory
The Geoenvironmental Laboratory is a new facility outfitted with specialty equipment for characterization and testing of solid waste materials. The facility is under negative pressure and ventilated by an active emission control system to allow testing of these materials in a controlled environment.
Geoenvironmental Engineering Laboratory
The Geotechnical Testing Laboratory houses conventional geotechnical characterization and testing equipment and is used for research as well as undergraduate teaching.
Geotechnical Testing Laboratory
Geotechnical Laboratory Testing Facilities
The Computational Geotechnics laboratory is a facility specifically for geotechnical research and graduate education that focuses on soil modeling and geotechnical analyses using computational tools.
G.R.A.V.E.L. The Geotechnical
Research And Visualization Engineering Laboratory houses State
of the Art equipment developed at the
University of Michigan for soil characterization.
G.R.A.V.E.L.
Computational Geotechnics Laboratory.
Laboratory Testing Equipment
Shear Resistance Testing -Conventional Direct Shear Device
-Geocomp Direct Shear Device
-Geocomp Triaxial Stress Path Device;
-Wykeham Farrance Triaxial Stress Path Device
Geoenvironmental Testing -Three (d=300-mm, h=600 mm)
landfill simulators -High Pressure Liquid
Chromatography (HPLC) with Diode Array Detector
-Gas Chromatography (GC) device with Thermal Conductivity Detector and Flame Ionization Detector
Consolidation Testing -Geocomp Incremental Load and
Constant Rate of Strain Consolidation Device
-Dead weight and pheumatic incremental load Consolidation Devices
Laboratory Testing Equipment
Dynamic Testing -CKC Cyclic Triaxial Device
-GCTS combined Resonant Column, Cyclic Torsional and Cyclic Triaxial Device
-Ultrasonic Platens
Vertical
load cell Horizontal
load cell
Vertical LVDTHorizontal
LVDT
Sample
container
Large-Scale Static & Dynamic Testing A custom-made device that allows 300-mm diameter Cyclic Simple Shear Device using stacked rings that is also modifiable to a 300-mm square Cyclic Interface Direct Shear is available for large-scale experimentation.
Laboratory Testing Equipment
Soil and Particle Imaging Characterization The Sedimaging System in the Soil Imaging Laboratory rapidly sorts soil particles by size using sedimentation through a column of water. An image processing techniques developed at Michigan produces the grain size distribution from a photo of the sedimented soil.
A Translucent Segregation Table (TST) in the Soil Imaging Laboratory rapidly determines particle size and shape distribution of large specimens of coarse sands and gravels from a digital photograph. The table is designed to segregate the particles by size so that no grains are obstructed from camera view. Thus, the size and shape of every particle is determined.
Field Testing Equipment
The UMich Geotechnical Engineering program operates a 20 ton piezocone penetration test (uCPT) rig (7 ton dead weight) for classroom instruction and research.
Cone Penetration Testing Rig
The fully equipped system contains data and image acquisition equipment for:
-piezocone (uCPT): -Seismic cone (SCPT) testing -Vision cone penetration (VisCPT) testing -Flat plate dilatometer (DMT) testing -Soil sampling
VisCPT
camera
housingCPT probe
Sapphire
window
47 cm42 cm
The CPT rig (above) and view of the vision cone (VisCPT) (below)
Field Testing Equipment
SASW equipment. System to perform Spectral Analysis of Surface Waves using a pair of 1 Hz vertical geophones APS 400 Electro-Seis long-stroke force generator shaker for continuous generation of surface waves
Three component 1-Hz geophones for very sensitive vibration measurements
Slope Indicator© Inclinometer Data Acquisition System Other field equipment for hand augering, undisturbed sampling, in-situ vane, pocket penetrometer, torvane, etc.
MASW and MAM equipment
MASW measurements at Arbor Hills landfill
1-D and 2-D Multichannel Analyses of Surface Waves (MASW) and Microtremor Analysis Method (MAM) seismic geophysics techniques using an array of sixteen 4.5Hz geophones.
Geotechnical Group Contacts For questions regarding the University of Michigan geotechnical facilities and equipment, please contact any of the Geotechnical Group Faculty .
Adda Athanasopoulos-Zekkos [email protected]
Donald Gray [email protected]
Roman Hryciw [email protected]
Radoslaw Michalowski [email protected]
Richard D. Woods [email protected]
Dimitrios Zekkos [email protected]
Laboratory Staff
Rick Burch Robert Fisher Jan Pantolin
GEOTECHNICAL GROUP
Version 2.1 – November 2012