Triaxial test soil sample preparation system

Abstract

The invention belongs to the technical field of soil test, and in particular relates to a novel triaxial test soil sample preparation system. The novel triaxial test soil sample preparation system comprises a compaction device, a sample striking barrel, a side-to-side clamping ring, a barrel opener and a planing brush. The sample striking barrel can be effectively fixed by the compaction device, and a striking hammer rod can be effectively controlled by the compaction device to be maintained perpendicular. The striking hammer rod is provided with scales, so that the height of a soil sample can be observed in real time. The inner wall of the sample striking barrel is coated with high-strength super-hydrophobic paint, so that the adhesion of water and soil particles on the wall of the sample striking barrel can be effectively reduced, and the barrel opening success rate can be greatly increased. Two convex rings are arranged on the outer side of the wall of the barrel and matched with the side-to-side clamping ring. The side-to-side clamping ring adopts a symmetric semicircular structure. The barrel opener is applicable to the sample striking barrel, the trivalve sample striking barrel can be opened by utilizing an identical force, the damage of the soil sample caused by non-uniformity of the stress when the barrel is opened can be avoided, and the barrel opening success rate can be increased. The diameter of the planing brush is identical to that of the sample striking barrel, and short steel wires are distributed on the surface of the planing brush. By adopting the novel triaxial test soil sample preparation system, the precision and efficiency for preparing a triaxial test soil sample can be effectively improved, and the barrel opening success rate can be increased.

Description

technical field [0001] The invention belongs to the technical field of soil engineering tests, and in particular relates to a soil sample preparation system for triaxial tests. [0002] technical background [0003] Conventional triaxial test is a very important test method in the field of geotechnical engineering, and it is an effective method to measure the mechanical properties of soil. For triaxial tests on disturbed soils, the quality of sample preparation has an important impact on test accuracy and data reliability. According to the specification requirements, the disturbed silt and clay samples were obtained by layered compaction method. Although the traditional compaction sample preparation is simple and easy to use, there are many problems in the sample preparation process: 1. It is difficult to fix the sample cylinder, it is easy to move during the operation, and the sample cylinder may slide upward; 2. The traditional sample cylinder uses The integral hoop hoop ...

AI Technical Summary

Problems solved by technology

Although the traditional compaction sample preparation is simple and easy to use, there are many problems in the sample preparation process: 1. It is difficult to fix the sample cylinder, it is easy to move during the operation, and the sample cylinder may slide upward; 2. The traditional sample cylinder uses The integral hoop hoop will slip and loosen during the compaction process, resulting in the opening of the joint or the misalignment of the formwork; 3. The direction of the hammer guide rod is inconvenient to control, and it is easy to tilt the compacted surface, resulting in uneven density of the soil sample; 4. The height of the soil sample in the cylinder cannot be monitored in real time in real-time layering, and continuous manual measurement is required, which is prone to insufficient or excessive compaction; 5. Manual shaving is required in real-time layering, and the quality of shaving cannot be guaranteed because there is no special tool; 6. It is difficult to open the tube, and the failure of sample preparation is often caused by the error of opening the tube

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