Batched and fast preparation device for triaxial remolded samples and preparation method

Abstract

The invention discloses a batched and fast preparation device for triaxial remolded samples and a preparation method, and relates to the field of soil tests. The batched and fast preparation device comprises a supporting frame, a sample taking device, a sample containing device, a pressurizing device, a bearing plate and a sample taking backing plate; the pressurizing device is installed at the upper end of the supporting frame; and the sample taking device is arranged at the bottom end of the supporting frame, the sample taking device comprises a fixing plate and multiple sample taking devices, the sample taking devices are detachably installed on the lower surface of the fixing plate, the upper surface of the fixing plate can be connected with the pressurizing device, the bearing plate can be connected with the pressurizing device, the pressurizing device can drive the sample taking device or the bearing plate to do reciprocating motion in the vertical direction, the sample taking backing plate is used for covering the upper surfaces of test soil bodies during sample taking, multiple through holes are formed in the sample taking backing plate, and one sample taking device penetrates through one through hole for sample taking. The preparation device is uniform and stable in pressurizing, small in error, capable of achieving batched and fast sample preparation and wide in applicability, the sample state trends to undisturbed soil, and a better test result can be acquired.

Description

technical field [0001] The invention relates to the field of geotechnical tests, in particular to a batch rapid preparation device and method for triaxial remodeling samples. Background technique [0002] According to the "Standards for Soil Engineering Test Methods" (GBT50123-1999), the soil triaxial test sample preparation equipment mainly includes a sampler, a saturator, a soil cutter, a soil cutter, an undisturbed soil sample divider, a film-supporting cylinder and a split circular mold. . The preparation of conventional triaxial remodeling samples is usually realized by layered compaction, that is, after the test soil is prepared by a certain control method, soil is loaded into the sample hammer in layers (usually three layers) and compacted. After compaction, demoulding will form the sample. This method is simple to operate and convenient to prepare samples, and is widely used in soil mechanics samples. [0003] But this conventional preparation method has the follo...

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Problems solved by technology

[0003] But this conventional preparation method has the following problems: (1) the preparation speed is slow, and the samples need to be prepared one by one, which consumes too much manpower, and it is difficult to meet the requirements for a large number of laboratory samples; (2) during the preparation process, Manual compaction often causes uneven force, and the compaction effect of the sample is not necessarily ideal. There may be local loose or too dense phenomena in the sample, which will affect the quality of the sample and have a great impact on the results of the experiment. ; (3) The consolidation state of the sample cannot be considered in the sample preparation process

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