Oblique sand hollow cylindrical test sample preparation apparatus
A technology for hollow cylindrical samples and preparation devices, which is applied in the preparation of test samples, measuring devices, sampling, etc., can solve the problems of inability to fully simulate the stress state of soil in nature and restrict the use of hollow cylindrical torsional shear instruments, etc. To achieve the uniformity of the sample and ensure the effect of uniformity
Pending Publication Date: 2018-05-29
董彤
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Problems solved by technology
The above limitations lead to the hollow torsional shear test can only consider one stress direction angle, and can only study the anisotropy of one dimension, which cannot completely simulate the stress state of the soil in nature, which restricts the use of the hollow cylindrical torsional shear instrument to a certain extent
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[0033] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.
[0034] see Figure 1-Figure 8 , the component numbers in the accompanying drawings represent respectively: sample molding module 1, inner molding cylinder 11...
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The invention belongs to the field of geotechnical test, and relates to an oblique sand hollow cylindrical test sample preparation apparatus. The oblique sand hollow cylindrical test sample preparation apparatus comprises a test sample molding module, an automatic test sample throwing module and a power module; the test sample molding module consists of a cylindrical inner molding tube, a cylindrical outer molding tube which is coaxially arranged with the inner molding tube in a nesting manner, and a bottom plate for mounting the inner molding tube and the outer molding tube, and a hollow cylindrical cavity is formed between the inner molding tube and the outer molding tube; the automatic test sample throwing module comprises a funnel-shaped feeding end and a blanking end which is connected with the feeding end and used for blanking materials into the cavity, and an axis of the automatic test sample throwing module is overlapped with the axis of the cavity; and the power module is usedfor supplying power so as to enable the test sample molding module and the automatic test sample throwing module to rotate relative to each other and is connected with the test sample molding moduleand / or the automatic test sample throwing module. By adopting the oblique sand hollow cylinder test sample preparation apparatus, a sand hollow cylindrical test sample having an angle between a preparation depositing surface and a radial direction of a test sample can be prepared.
Description
technical field [0001] The invention belongs to the field of geotechnical tests, and relates to a device for preparing a hollow cylinder sample of inclined sandy soil. Background technique [0002] The hollow cylindrical torsional shear instrument is one of the most advanced indoor test equipment at present. The hollow cylindrical torsional shear instrument can independently control the magnitude of the three principal stresses and the angle of rotation around the direction of the central principal stress, so that anisotropic experimental research can be carried out . However, the preparation of hollow cylindrical samples is the bottleneck of the development of this technology, and the difficulty of preparing hollow cylindrical samples restricts the application of hollow cylindrical torsional shear instruments. [0003] In the prior art, the layered sand pouring method is usually used to prepare sand samples; the drainage consolidation method and layered compaction method a...
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IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 董彤孔亮马云王兴
Owner 董彤