A Soil Column Prototyping Machine

Abstract

The invention belongs to the field of geotechnical testing, and discloses a soil column sample making machine, which includes a base, a base stand, a limit assembly, a drive assembly, a support bracket, a stamping plate, a mold plate, a spring, a sample preparation cylinder, and a cushion block. The upper end of the base is welded with a base stand, and the upper end of the support bracket supports the drive assembly, which drives the stamping plate to slide vertically, the die plate slides horizontally between the base stands, and the sample preparation cylinder is placed on the mold On the plate, the pad is placed on the upper side of the sample preparation cylinder, the limit assembly is fixed on the base frame, and the lower end of the spring is in contact with the base. The structure is simple, the operation is convenient, accurate and efficient, and the sample preparation process The soil column is evenly stressed, and the height, flatness and dry density of the produced soil column are basically the same. A lot of manpower.

Description

technical field [0001] The invention relates to a soil column sample making machine, which belongs to the technical field of geotechnical testing. Background technique [0002] Consolidation tests, direct shear tests, and density tests are all commonly used soil tests. The consolidation parameters of the soil sample under pressure can be obtained through the consolidation test, which can be used to evaluate the settlement amount and settlement time of the soil layer under the upper load. The shear strength parameters of the soil sample can be obtained through the direct shear test. To evaluate the strength of the soil and carry out stability calculation and analysis, the natural density of the undisturbed soil can be determined through the density test. Whether it is a consolidation test, a direct shear test or a density test, soil columns of the same size ( 6.18cm in diameter and 2.0cm in height) is the test object, and for college soil engineering tests, it is necessary t...

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Problems solved by technology

The compression method is one of the most commonly used methods for disturbing soil samples. The operation is relatively simple and the soil will not be disturbed by impact loads. However, it is difficult to maintain the same height, flatness and dry density of the samples when using the compression method. , holes may be formed in the soil body, and the static pressure demoulding is generally provided by the jack, which increases the operation process, and only one sample can be produced at a time, and the efficiency is low, which is difficult to meet the demand for large circular pie-shaped soil columns in college teaching experiments , also restricts the stable acquisition of relevant parameters of the soil column, and hinders the in-depth research and engineering application of soil column physical and mechanical parameters, so it is necessary to develop soil column sample preparation equipment

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