Parallel hydraulic type triaxial sample preparation device and sampling method thereof

Abstract

The invention discloses a parallel hydraulic type triaxial sample preparation device and a sampling method thereof, belonging to the technical field of soil mass mechanics performance testing. The parallel hydraulic type triaxial sample preparation device comprises a base, a door-shaped bracket, a hydraulic system, a sampling cylinder and a counter-force pad, wherein the door-shaped bracket is installed on the base; the hydraulic system is installed on the door-shaped bracket; a horizontal counter-force cross beam is installed at the lower part of the door-shaped bracket; a sample unloading round hole is formed in the counter-force cross beam; the hydraulic system comprises a hydraulic implementer, a pressure transmission rod, a push head, a stopper and a horizontal beam; the sampling cylinder is a cylindrical hollow cylinder body; and the counter-force pad comprises a counter-force cross plate, an upper side bulge and a lower side bulge. With the adoption of the parallel hydraulic type triaxial sample preparation device, the defect that a traditional sample preparation device cannot sufficiently compress the soil mass with uniform density is overcome; not only are the overall density of a sample and the consistency of the samples precisely controlled, but also 1-3 samples can be prepared once with high efficiency; and the samples can be unloaded conveniently.

Description

Technical field: [0001] The invention relates to a parallel hydraulic triaxial sample preparation device and a sample preparation method thereof, belonging to the field of soil mechanical performance testing in the civil engineering discipline. Background technique: [0002] At present, with the increase of construction projects on soft soil foundations in coastal areas, land resources are becoming increasingly scarce, and the test of soft soil mechanical properties has become an important content in civil engineering. When testing the triaxial mechanical properties of soft soil in the laboratory, it is usually made into a cylindrical standard sample with a diameter of 3.91 cm and a height of about 8.0 cm, and a set of experiments requires 3 to 5 standard samples to simulate 3 to 5 a different confining pressure. During the sample making process, it needs to be compacted evenly to achieve the designed compactness. Laboratory sample production usually adopts manual compacti...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a parallel hydraulic triaxial sample preparation device and its sample preparation method to solve the defects of prior art sample uniformity and easy damage. The present invention can accurately control the overall density and Consistency between samples, and can make 1 to 3 samples at a time, high efficiency, more convenient to unload samples

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