CN104483207A - Progressively-decreased direct shear testing device - Google Patents
Progressively-decreased direct shear testing device Download PDFInfo
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- CN104483207A CN104483207A CN201410760006.9A CN201410760006A CN104483207A CN 104483207 A CN104483207 A CN 104483207A CN 201410760006 A CN201410760006 A CN 201410760006A CN 104483207 A CN104483207 A CN 104483207A
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- box
- shear box
- down cut
- upper shear
- length
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Abstract
The invention discloses a progressively-decreased direct shear testing device comprising a lower shear box, wherein the bottom of the lower shear box is provided with rolling balls, and the opening part of the lower shear box is provided with a reinforced material on which an upper shear box is arranged; the length and width of the inner cavity of the upper shear box are larger than or equal to 300mm; and the length and width of the inner cavity of the lower shear box are at least 16.5% larger than those of the inner cavity of the upper shear box. The opening part of the upper shear box is provided with a compression plate, and one side of the upper shear box is provided with a support frame; and the lower shear box and the upper shear box are internally and respectively provided with filler, one side of the lower shear box is provided with a horizontal force loading device, and a normal force loading device is arranged above the compression plate. The progressively-decreased direct shear testing device is simple in structure, low in manufacturing cost and easy to operate.
Description
Technical field
The present invention relates to Soil K+adsorption equipment, especially, relate to a kind of degression type direct shear test device.
Background technology
Direct shear test is mainly used in the rubbing characteristics measuring soil and geosynthetics ceramic-metal bond.Obtain corresponding maximum shear by the direct shear test of different normal pressure, draw maximum shear-normal stress curve, matching best straight line, finally determines interface friction intensity index cohesive strength and angle of internal friction.At present, the staight scissors instrument used is primarily of upper and lower shear box, loading system, shearing gearing, dynamometer and displacement measurement system composition, and structure is comparatively complicated, is not easy to use.
Summary of the invention
The object of the invention is to provide a kind of degression type direct shear test device, and to solve in prior art, staight scissors instrument complex structure, is not easy to the problem used.
For achieving the above object, the invention provides a kind of degression type direct shear test device, comprising: down cut box, the bottom of described down cut box is provided with ball, and the oral area of described down cut box is provided with muscle material, is provided with upper shear box in described muscle material; The length and width size of the inner chamber of described upper shear box is more than or equal to 300mm; The length and width size of the inner chamber of described down cut box is at least greater than 16.5% of the length and width size of the inner chamber of described upper shear box.The oral area of described upper shear box is provided with increased pressure board, and the side of described upper shear box is provided with support; Described down cut box and described on be respectively arranged with filler in shear box, the side of described down cut box is provided with horizontal force charger, above described increased pressure board, is provided with normal force charger.
Further, described horizontal force charger is regulation motor device.
Further, described normal force charger is hydraulic jack or lever system.
The present invention has following beneficial effect:
Structure is simple, low cost of manufacture, is easy to operation.
Accompanying drawing explanation
Below with reference to figure, the present invention is further detailed explanation.The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of degression type direct shear test device preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
Refer to Fig. 1, the preferred embodiments of the present invention provide a kind of degression type direct shear test device, comprising: down cut box 1, and the bottom of described down cut box 1 is provided with ball 3, the oral area of described down cut box 1 is provided with muscle material 6, is provided with upper shear box 2 in described muscle material 6.The length and width size of the inner chamber of described upper shear box 1 is more than or equal to 300mm; The length and width size of the inner chamber of described down cut box 1 is at least greater than 16.5% of the length and width size of the inner chamber of described upper shear box 2.The oral area of described upper shear box 2 is provided with increased pressure board 9, and the side of described upper shear box 2 is provided with support 7; Described down cut box 1 with described on be respectively arranged with filler 8 in shear box 2, the side of described down cut box 1 is provided with horizontal force charger 4, above described increased pressure board 9, is provided with normal force charger 5.
Preferably, described horizontal force charger 4 can adopt varying-speed motor device or other loading system promote down cut box 1 in the horizontal direction constant speed move; Described normal force charger 5 adopts hydraulic jack or lever system etc. to ensure, and the constant device of vertical load applies normal force to shear surface equably in down cut box 1 constant speed displacement process.The horizontal shear force that staight scissors instrument utilizes pulling force sensor to measure one's own ability in ring or other device for measuring force acquisition direct shear test process, adopts the level in dial gauge or displacement meter measurement direct shear test and vertical displacement.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention; For a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a degression type direct shear test device, is characterized in that, comprising:
Down cut box, the bottom of described down cut box is provided with ball, and the oral area of described down cut box is provided with muscle material, is provided with upper shear box in described muscle material; The length and width size of the inner chamber of described upper shear box is more than or equal to 300mm; The length and width size of the inner chamber of described down cut box is at least greater than 16.5% of the length and width size of the inner chamber of described upper shear box;
The oral area of described upper shear box is provided with increased pressure board, and the side of described upper shear box is provided with support; Described down cut box and described on be respectively arranged with filler in shear box, the side of described down cut box is provided with horizontal force charger, above described increased pressure board, is provided with normal force charger.
2. degression type direct shear test device according to claim 1, is characterized in that:
Described horizontal force charger is regulation motor device.
3. degression type direct shear test device according to claim 2, is characterized in that:
Described normal force charger is hydraulic jack or lever system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410760006.9A CN104483207A (en) | 2014-12-13 | 2014-12-13 | Progressively-decreased direct shear testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410760006.9A CN104483207A (en) | 2014-12-13 | 2014-12-13 | Progressively-decreased direct shear testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104483207A true CN104483207A (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410760006.9A Pending CN104483207A (en) | 2014-12-13 | 2014-12-13 | Progressively-decreased direct shear testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104483207A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510153A (en) * | 2015-11-26 | 2016-04-20 | 中国矿业大学 | Large soil body interface shear test model and test method |
| CN107860647A (en) * | 2017-12-19 | 2018-03-30 | 浙江工业大学 | Shearing box device for constant-section direct shear experiment and operation method |
| CN112595607A (en) * | 2020-12-23 | 2021-04-02 | 中国建筑第四工程局有限公司 | Shear creep gauge for landfill liner system |
| CN113624591A (en) * | 2021-09-06 | 2021-11-09 | 贵州省水利水电勘测设计研究院有限公司 | Direct shear tester |
-
2014
- 2014-12-13 CN CN201410760006.9A patent/CN104483207A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 吴玉友等: "加筋土界面特性室内试验研究进展", 《西部交通科技》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510153A (en) * | 2015-11-26 | 2016-04-20 | 中国矿业大学 | Large soil body interface shear test model and test method |
| CN105510153B (en) * | 2015-11-26 | 2018-01-23 | 中国矿业大学 | Large soil body interface shear test model and test method |
| CN107860647A (en) * | 2017-12-19 | 2018-03-30 | 浙江工业大学 | Shearing box device for constant-section direct shear experiment and operation method |
| CN112595607A (en) * | 2020-12-23 | 2021-04-02 | 中国建筑第四工程局有限公司 | Shear creep gauge for landfill liner system |
| CN113624591A (en) * | 2021-09-06 | 2021-11-09 | 贵州省水利水电勘测设计研究院有限公司 | Direct shear tester |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |
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| RJ01 | Rejection of invention patent application after publication |