Sand soil consolidation compression test sample loading device and sample loading method thereof

Abstract

The invention discloses a sand soil consolidation compression test sample loading device and a sample loading method thereof. A limiter is arranged on an upper outer frame and comprises a cover portion and a pipe portion, a dowel bar is arranged in the pipe portion, and one end, in a cutting ring, of the dowel bar is provided with a sand scraping device to divide a sand sample into multiple parts. The sand sample is spread into the cutting ring and consolidated under actions of continuous pressing and rotational spreading of the sand scraping device, then another part of the sand sample is poured, the above process repeats, and sampling loading is completed after pressing of a permeable stone is finished finally. Compared with the prior art, the sand soil consolidation compression test sample loading device and the sample loading method thereof have advantages that dry density and relative compaction of sand soil samples in a one-dimensional consolidation test can be controlled accurately to guarantee uniformity in sand soil sample loading, and accordingly influences caused by dry density and relative compact differences of the sand soil samples or nonuniformity in sample loading to test results can be reduced, and test errors are reduced.

Description

technical field [0001] The invention relates to a sample loading device and a sample loading method, in particular to a sand soil consolidation compression test sample loading device and a sample loading method, belonging to the technical field of sample preparation in geotechnical engineering. Background technique [0002] When building a building on the foundation, each point in the foundation soil not only bears the self-weight stress of the soil itself, but also bears the additional stress generated by the load on the upper part of the foundation, which will lead to the deformation of the foundation soil. In order to study the final settlement effect of the soil and determine the gradual development of the settlement over time before reaching this final value, we must study the compression and consolidation characteristics of the soil, which requires indoor one-dimensional compression ( Consolidation) test. [0003] The indoor one-dimensional compression (consolidation)...

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Problems solved by technology

[0007] The technical problem to be solved in the present invention is to provide a method that is simple to operate and easy to use in view of the deficiencies of the above-mentioned prior art, and can make sand samples evenly layered for sample preparation, and solve the problems of uneven top and bottom of the sample and uneven appearance. Sand and soil consolidation compression test sample loading device and sample loading method for accurately controlling the relative density of samples

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