Large-scale Coarse-grained Soil Dynamic-static Triaxial Testing System

The system has the stably control function of danymic-static,loading axially,surrounding pressure and pore water pressure for seismic simulation study, which could confirm the intensity,shear modulus,damping ratio of soil mass. The study of stress path can be setting by the stress path testing control system, and the triaxial creep testing can be setting by the triaxial creep testing control system.   Model DSTD-1000KN DSTD-2000KN Main pressure Max pressure Static and dynamic: Pmax=1000KN  Static and dynamic: Pmax=2000KN Force range 100～1000KN 200～2000KN Force resolution 10N 20N Force accuracy ±0.5%FS Displacement loading rate 0～100mm/min Force loading rate 0～10KN/s 0～20KN/s Max stroke Hmax=300mm or ±150mm Deformation Specimens deform range 0~200mm Deform accuracy ±0.5%FS Deform resolution 0.001mm Confining pressure（σ2、σ3） Max confining pressure ≤10MPa Force range 0～10MPa Accuracy ±0.5%FS Resolution 1KPa Pore pressure Max force ≤3MPa Force range 0～3MPa Accuracy ±0.5%FS Resolution 0.1KPa Back-pressure   Max pressure ≤3MPa Force range 0～3MPa Accuracy ±0.5%FS Resolution 0.1KPa specimens size φ300×600mm   stiffness ≥10MN/mm   Dimension 2460×1060×780（H×W×L）