Soil Dynamic Triaxial Test Apparatus
PRoduct description
Cyclic Triaxial Test:
Apply periodic axial loads, observe the accumulation of pore water pressure and strain development, and determine the possibility of liquefaction (such as ASTM D5311).
Resonance column test (optional module):
Measure the shear modulus (G ₘₐₓ) and damping ratio (D) of soil under small strain.
K ₀ Consolidation test: Simulate the in-situ stress state of soil.
Main output parameters
1. Liquefaction resistance: relationship curve between cyclic stress ratio (CSR) and liquefaction cycles (N ₗ).
2. Dynamic shear modulus (G) and damping ratio (λ): characterize the dynamic stiffness and energy dissipation capacity of soil.
3. Dynamic intensity curve: the relationship between the number of destructive vibrations and the ratio of dynamic stress.
4. Pore water pressure development curve: revealing liquefaction process.
application area
1. Seismic engineering: Evaluating the stability of foundations and slopes during earthquakes.
2. Geotechnical Engineering: Dynamic Response Analysis of Subway and Bridge Foundations.
3. Research and Education: Study of Soil Dynamics Characteristics (such as Sand Liquefaction and Clay Dynamic Creep).
Standard specification
Compliant with ASTM D3999 (dynamic modulus), ASTM D5311 (cyclic triaxial),
Technical parameters
(1)Host
Electric cylinder piston stroke: 100mm
Electric cylinder: maximum output 10KN (other specifications optional: 5KN); 50KN; 100KN）
Pressure sensor: 0-10KN accuracy 0.05N
Deformation: 0-100mm Accuracy: 0.001mm can achieve zero reset at any point
Electric cylinder loading speed: 0.001-50mm/min, can be set arbitrarily
Electric cylinder vibration frequency: 0.1-5.0Hz, stress-strain control can be set arbitrarily
Voltage: 220V 50Hz
Power: 5KW
(2)Confining pressure loading system
Range of confining pressure: 0-1000KPa (pressure source is gas or water pump)
Test medium: liquid or gas
Pressure control: computer-controlled
Operation mode; Computer Operation
Display accuracy: 1KPa
(3) Reverse pressure control system
Reverse pressure loading range: 0-1MPa, 0.02KPa adjustable
Voltage: 220V/250W
(4) Variable body control system
Displacement: Accuracy 0.1mL
Pore pressure transmitter: 0-300KPa accuracy 0.5KPa
(5)Pressure chamber
Φ 39.1mm, diameter 61.8mm, and diameter 101mm can be freely selected, and the factory is equipped with a pressure chamber of diameter 39.1mm.
(6)Servo control system
The servo control system is a new generation of intelligent measurement and control product developed based on the ISD platform. It is a measurement and control card with a built-in PCI2.1 specification on the microcomputer, equipped with a 32-bit floating-point DSP control core and a DTE embedded real-time operating system, enabling arbitrary multi-channel closed-loop control. The measurement and control frequency of 10000 times per second can meet the high standard measurement and control requirements of dynamic testing specifications.
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