A device for preparing samples for direct shear test of frozen soil-structure interface and a method of using the same
By using pressurized water injection to freeze and form an ice film at the frozen soil-structure contact surface, and using a laser rangefinder to control the thickness, the problem of inconsistency between the ice film sample preparation process and the actual engineering in the existing technology has been solved. This has enabled high-precision testing of the shear characteristics of the frozen soil-structure contact surface, ensuring the safety of related projects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA UNIV OF MINING & TECH
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
In existing direct shear tests of frozen soil-structure contact surfaces, the ice film formation process is inconsistent with that in actual engineering, resulting in low precision in controlling the ice film thickness and affecting the accuracy of shear characteristic tests of frozen soil-structure contact surfaces.
An ice film is formed at the frozen soil-structure contact surface by pressurized water replenishment freezing, and the thickness of the ice film is controlled by a laser rangefinder to ensure that the ice film preparation process is consistent with the actual project and improve the accuracy of the ice film thickness.
It achieves precise control over the thickness of the ice film, ensuring high accuracy and high fidelity in the shear characteristic test of the permafrost-structure contact surface, and supports the safety assessment of engineering projects and artificial freezing technology in permafrost regions.
Smart Images
Figure CN122409307A_ABST