A sample loading device and sample loading method for sand consolidation compression test
A technology of consolidation compression and sample loading, which is applied in the preparation, sampling, and instrumentation of test samples. It can solve the problems of uneven appearance and uneven top and bottom of samples, so as to save sample loading time, ensure uniformity, and facilitate The effect of the operation
Active Publication Date: 2019-07-05
HOHAI UNIV
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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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[0029] The preferred technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0030] Such as figure 1 As shown, a sandy soil consolidation compression test sample loader of the present invention includes the original part of the consolidation container, that is, the water tank 1, the water tank 1 is provided with an outer protective ring 2, and the outer protective ring 2 is The bottom of the water tank 1 is provided with a permeable stone 3, and a filter paper 4 is laid on the permeable stone 3, and an inner guard ring 5 is arranged on the top of the filter paper 4 along the outer guard ring 2. The inner guard ring 5 has a ring knife 6 , the upper outer frame 7 is installed on the ring knife 6;
[0031] In addition, it also includes an auxiliary sample loader, that is, a limiter 8 is arranged on the upper outer frame 7, and the limiter 8 is made of a transparent hard material with a thickness less than 2m...
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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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IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 沈雪沈扬徐海东杜伟伟冯照雁
Owner HOHAI UNIV