一种预固结快速不排水剪切设备及方法
By designing a pre-consolidated rapid undrained shearing device and employing equal strain and equal stress loading methods, combined with vertical and horizontal displacement sensors, rapid and stable consolidation and shearing tests of floodplain soft soil were achieved, solving the problems of low efficiency and inaccurate data in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 江苏省地质局第一地质大队
- Filing Date
- 2023-11-20
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, soft soil in floodplains undergoes rebound deformation after preconsolidation and unloading, and the time required for reconsolidation and stabilization is long, resulting in low efficiency of consolidation rapid shear tests. Furthermore, conventional 4-unit direct shear apparatus cannot simultaneously achieve consolidation and stabilization of samples under various pressure levels, affecting the accuracy of experimental data.
A pre-consolidated rapid undrained shearing device was designed, including an upper shear box, a lower shear box, and a test unit. It adopts a vertical consolidation mechanism and a horizontal shearing mechanism, and uses equal strain and equal stress loading methods, combined with vertical displacement sensors and horizontal displacement sensors, to achieve rapid stabilization of soil samples after preconsolidation and conduct shear tests.
This solves the problems of soil sample rebound deformation and long reconsolidation time, improves the accuracy and efficiency of experimental data, and ensures that soil samples are consolidated simultaneously under various pressure levels.
Smart Images
Figure CN117538183B_ABST