On-site large-scale coarse-grained soil direct shear testing equipment

A kind of test equipment, coarse-grained soil technology, applied in the direction of applying stable shear force to test the strength of materials, etc., can solve the problems of non-detachable, large mass, inconvenient transportation and carrying, etc., and achieve the effect of easy portability and wide range of use

Inactive Publication Date: 2014-06-25
黄斌
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a large-scale direct shear test equipment for coarse-grained soil, which solves the problem that the existing large-scale direct shear equipment is used in the laboratory. Big, inconvenient to transport and carry

Method used

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  • On-site large-scale coarse-grained soil direct shear testing equipment
  • On-site large-scale coarse-grained soil direct shear testing equipment
  • On-site large-scale coarse-grained soil direct shear testing equipment

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] The present invention as figure 1 Shown includes a shear box 9, a cover plate 8 is arranged above the shear box 9, a roller row 7 is arranged above the cover plate 8, a pressure bearing plate 6 is arranged above the roller row 7, and a vertical shaft is arranged above the pressure bearing plate 6. To the jack 5, the lower end of the vertical jack 5 is supported on the pressure plate 6, and the upper end of the vertical jack 5 is covered with a vertical jack ball cover 4, and the vertical jack ball cover 4 is installed on the vertical pressure transmission plate 3 with a groove. In the nest, the vertical pressure transmission plate 3 with the nest is fixed on the lower end of the main beam 2, the upper end of the main beam 2 is connected to the secondary beam 1, the side of the shear box 9 is horizontally connected with the horizontal p...

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Abstract

The invention discloses on-site large-scale coarse-grained soil direct shear testing equipment. The on-site large-scale coarse-grained soil direct shear testing equipment comprises a counter-force device, a vertical loading system, a horizontal loading system, a testing system and a shear box; machine excavation and hand excavation are combined with trimming to prepare a wedge-shaped undisturbed soil weir (or stereobate) with required size, counter force is provided through bearing strength of a surrounding rock, and a bulb flat-pushing method is adopted to perform a stress type quick shear test on on-site coarse-grained soil under a natural moisture-containing status. The on-site large-scale coarse-grained soil direct shear testing equipment is reasonable in design, simple in structure and convenient to operate, can completely obtain real and reliable shearing strength resisting parameters of the undisturbed coarse-grained soil. The on-site large-scale coarse-grained soil direct shear testing equipment has the beneficial effects that the equipment is suitable for testing on the undisturbed coarse-grained soil to obtain the real and reliable shearing strength resisting parameters, the testing result can reflect the on-site soil status, and the equipment has the characteristics of integral detachability, convenience in carrying and wide using range.

Description

technical field [0001] The invention belongs to the technical field of field test parameter measurement of rock and soil mechanics, and relates to a field large-scale direct shear test equipment for coarse-grained soil. Background technique [0002] Direct shear test instruments are divided into indoor test direct shear instruments and field test direct shear instruments. The conventional indoor direct shear tester has two shear boxes, upper and lower. After the sample is placed in the shear box, a certain vertical pressure is applied on the top of the sample to push the shear box, so that the sample is sheared until it is destroyed, thereby Get the strength parameters of the soil. Because the size of the direct shear instrument for the indoor test is too small, and the direct shear test is carried out in the laboratory after the original sample is taken back, on the one hand, the size is too small, and the parameters obtained are not accurate; on the other hand, the origin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
Inventor 黄斌程展林饶锡保张伟张婷刘鸣徐言勇周密吴忠明张本蛟
Owner 黄斌
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