Sample preparation device and method suitable for different cohesive soils

Abstract

The invention discloses a sample preparation device and method suitable for different cohesive soils. The device comprises a driving hammer plate, a guide rod, a pile casing, a compaction plate, an upper bottom plate, an ejector rod, an upper top plate, a stabilizing frame, a hoop, a compaction barrel, a lower bottom plate and a manual rotating handle, the compaction barrel is fixed by a hoop andis assembled with the lower bottom plate by the stabilizing frame, the upper bottom plate is put into the compaction barrel to be tightly connected with the compaction barrel, and then the pile casingis connected with a cylinder at the upper part of the compaction barrel in a matching manner to form a compaction barrel test device; the guide rod penetrates the central guide hole of the upper topplate, one end of the guide rod is connected with the compaction plate, and the other end of the guide rod is connected with the hammer plate to form a sample test device after connection; and the ejector rod is connected with the manual rotating handle to form a sample unloading test device. The problems that the height of a soil sample is difficult to control, soil sample particles are lost in the compaction process, a formed compaction surface has an inclination angle, and sample damage is caused by sample unloading are effectively solved, the structure is simple, use is convenient, and theprepared soil sample meets test requirements.

Description

Technical field [0001] The invention belongs to the technical field of geotechnical engineering, relates to geotechnical testing, and specifically relates to a sample preparation device and method suitable for different clay soils. Background technique [0002] In the practical application of geotechnical engineering, since it is difficult to obtain undisturbed soil on site, in order to obtain the physical and mechanical properties test parameters of soil, to a certain extent, it is necessary to rely on indoor preparation of reshaped soil. In geotechnical testing, many test parameters are measured using laboratory preparation technology and related test instruments under modern laboratory technical conditions, and the preparation of reshaped soil samples plays a key role in geotechnical testing. According to relevant geotechnical testing procedures, commonly used remolded soil sample preparation methods include impact method and compaction method. Due to the short sample pre...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems and disadvantages existing in the prior art, the present invention provides a sample preparation device and method suitable for different cohesive soils, which effectively solves the difficulty in controlling the height of soil samples, loss of soil sample particles during compaction, The formed compaction surface has the problem of inclination angle and sample damage caused by sample unloading. The structure is simple, easy to use, and the prepared soil sample meets the test requirements.

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