Universal Soil Dynamics Testing System
Geotechnical earthquake engineering is crucial for infrastructure safety in seismic areas. The GCTS SRC-100 Universal Soil Dynamics Testing System is an automated platform that assesses the seismic response of soil and rock formations.
The SRC-100 performs resonant column tests, cyclic/dynamic triaxial tests, ultrasonic velocity measurements, and resilient modulus evaluations, providing a detailed analysis of soil behavior under seismic loads. The resonant column test identifies dynamic properties like shear modulus and damping ratio, while the dynamic triaxial test evaluates strength and stiffness under axial and cyclic loads.
This system combines resonant column and torsional shear functions, allowing for the evaluation of soil parameters across a broad range of moduli. It uses a torsional drive to vibrate the specimen at up to 500 Hz, with a non-contacting rotational transducer for accurate shear strain measurement. An optional accelerometer can measure large shear strains.
The SRC-100 accommodates isotropic or anisotropic conditions, with a “floating” frame for large vertical and shear deformations. Its advanced components ensure precise control, real-time data acquisition, and reliable results for critical design decisions.
SRC-100
HIGHLIGHTS
- 2.33 N-m torsional load capacity
- 500 Hz maximum resonant test frequency
- 50 Hz maximum torsional shear test frequency
- 0 to 0.01 rad. angular deformation range
- 0.5 x 10-6 rad. angular deformation resolution
- ±25° maximum rotational stroke
- 25 mm axial displacement range of torque motor
- 10 kN load frame capacity
- 50 mm load frame stroke
- 70 mm maximum specimen diameter (solid or hollow)
- 160 mm maximum specimen height
- 1,000 kPa (150 psi) maximum confining pressure
- Floating drive and measurement system to allow for large angular and axial deformations
- Easy-to-use software to automatically perform resonant column & torsional shear tests
- Load frame allows for specimen consolidation before testing and anisotropic stress conditions. Also allows for full triaxial tests with available upgrade
- Optional platens for S-wave velocity measurements are available
TSH Series
HIGHLIGHTS
- 2.33 N-m torsional load capacity
- 500 Hz maximum rotational frequency
- ±25° maximum rotational stroke
- 100 mm maximum specimen diameter
- 1,000 kPa (150 psi) maximum confining pressure. Larger capacities available upon request using a metallic cell wall
- Ability to perform tests on either solid or hollow cylindrical specimens
- Floating drive and measurement system to allow for large angular and axial deformations
- Can rotate the specimen either statically or dynamically at up to 50 Hz for torsional shear tests
- Easy-to-use software to automatically perform resonant column & torsional shear tests
- Optional platens with ultrasonic transducers for P- and S-wave velocity measurements available
- Optional loading frame to perform test at anisotropic stress conditions in addition to conventional static and dynamic tests
Relevant Standards
ASTM D4015 Standard Test Methods for Modulus and Damping of Soils by Fixed-Base Resonant Column Devices
ASTM D7608 Standard Test Method for Torsional Ring Shear Test
ASTM D2166 Standard Test Method for Unconfined Compressive Strength of Cohesive Soil
ASTM D2435/ D2435M-11 Standard Test Methods for One-Dimensional Consolidation Properties of Soils Using Incremental Loading
ASTM D2850 Standard Test Method for Unconsolidated-Undrained Triaxial Compression Test on Cohesive Soils
ASTM D3999 Standard Test Methods for the Determination of the Modulus and Damping Properties of Soils Using the Cyclic Triaxial Apparatus
ASTM D4186/ D4186M-12e1 Standard test Method for One-Dimensional Consolidation Properties of Saturated Cohesive Soils Using Controlled-Strain Loading (CRS Option)
ASTM D4219 Standard Test Method for Unconfined Compressive Strength Index of Chemical-Grouted Soils
ASTM D4767 Standard Test Method for Consolidated Undrained Triaxial Compression Test for Cohesive Soils
ASTM D5084 Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter
ASTM D5102 Standard Test Method for Unconfined Compressive Strength of Compacted Soil-Lime Mixtures
ASTM D5202 Standard Test Method for Determining Triaxial Compression Creep Strength of Chemical Grouted Soils
ASTM D5311/D5311M-13 Standard Test Method for Load-Controlled Cyclic Triaxial Strength of Soil
ASTM D5333 Standard Test Method for Measurement of Collapse Potential of Soils
ASTM D7181 Method for Consolidated Drained Triaxial Compression Test for Soils
AASHTO T307 Standard Method of Test for Determining the Resilient Modulus of Soils and Aggregate Materials
