CN105334098A - Sealing and fixing device of triaxial compression test for coarse-grained soil samples - Google Patents
Sealing and fixing device of triaxial compression test for coarse-grained soil samples Download PDFInfo
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- CN105334098A CN105334098A CN201410402194.8A CN201410402194A CN105334098A CN 105334098 A CN105334098 A CN 105334098A CN 201410402194 A CN201410402194 A CN 201410402194A CN 105334098 A CN105334098 A CN 105334098A
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- hollow cylinder
- cylindrical shell
- cylinder cylindrical
- fixing device
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Abstract
The invention discloses a sealing and fixing device of a triaxial compression test for coarse-grained soil samples. The sealing and fixing device comprises first hollow cylinder bodies, second hollow cylinder bodies and sealing rings, wherein the first hollow cylinder bodies and the second hollow cylinder bodies are used for fixing a sample; the first hollow cylinder bodies are made of polyvinyl chloride plastic cloth; the second hollow cylinder bodies are made of rubber films; the first hollow cylinder bodies are sheathed by the second hollow cylinder bodies; and sealing rings are respectively arranged at the upper ends and the lower ends of the second hollow cylinder bodies. The sealing and fixing device disclosed by the invention has the advantages that not only is the problem of sample sealing under the condition of high confining pressure in triaxial test solved, but also the success ratio of test is ensured and the operation is convenient.
Description
Technical field
A kind of triaxial compression test sealed fixing device for coarse-grained soil specimen of the present invention, relates to earth and rockfill dam Coarse Aggregate triaxial shear test field.
Background technology
Instantly rock-fill dams are in the trend southwest developed gradually, and high dam occurs on a large scale.It is short that the type dam has the dam body construction period, special landform, geology, dam foundation condition, and compaction quality requires high.Therefore, due to the raising of height of dam, controling parameters such as test confined pressure etc. is improved greatly, the device of the fixing sample of original coarse-grained soil triaxial shear test sealing by: rubber membrane and bungee form.Wrapped up by sample with rubber membrane, then fixed by bungee, the method rubber membrane when confined pressure is excessive is easy to break, and causes test failure to affect the process of experiment work.Meanwhile, adopt that bungee ties up that seal operation is loaded down with trivial details, bungee easily aging, change the unfavorable factors such as frequent, thus increase the uncertainty of process of the test.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of triaxial compression test sealed fixing device for coarse-grained soil specimen, this device not only solves sample sealing problem under triaxial test high confining pressure condition, guarantees success of the test rate, convenient operation.
The technical scheme that the present invention takes is:
A kind of triaxial compression test sealed fixing device for coarse-grained soil specimen, comprise the first hollow cylinder cylindrical shell, the second hollow cylinder cylindrical shell and the O-ring seal for fixing sample, described first hollow cylinder cylindrical shell is that igelite cloth is made, described second hollow cylinder cylindrical shell is that rubber diaphragm is made, first hollow cylinder cylindrical shell is enclosed within the second hollow cylinder cylindrical shell, and the second hollow cylinder cylindrical shell upper/lower terminal is respectively equipped with O-ring seal.
Described first hollow cylinder cylindrical shell is close to the inwall of the second hollow cylinder cylindrical shell, and keeps straight.
Described first hollow cylinder cylindrical shell diameter 300mm, wall thickness 1mm, length are 600mm.
Described second hollow cylinder cylindrical shell diameter 300mm, wall thickness 5mm, length are 700mm.
Described O-ring seal is provided with hold-doun nut, retaining thread mouth, the collar.
A kind of triaxial compression test sealed fixing device for coarse-grained soil specimen of the present invention, first rubber membrane hollow cylinder cylindrical shell is fixed in sample bucket, at rubber membrane hollow cylinder cylindrical shell inner sleeve one deck igelite cloth, then carry out dress sample according to corresponding code requirement.After dress sample, O-ring seal is individually fixed in the upper and lower porous disc water stopping trough of sample, by this device, triaxial test sample sealing problem under high confining pressure condition can be solved quickly and easily on the one hand; Improve the success ratio of triaxial test under high confining pressure simultaneously, and convenient operation.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of apparatus of the present invention;
Fig. 2 is apparatus of the present invention plan structure schematic diagram;
Fig. 3 is the ring structure schematic diagram of apparatus of the present invention.
Embodiment
As shown in Figure 1, a kind of triaxial compression test sealed fixing device for coarse-grained soil specimen, comprises the first hollow cylinder cylindrical shell 1, second hollow cylinder cylindrical shell 2 and O-ring seal 3 for fixing sample 4.Described O-ring seal 3 is provided with hold-doun nut 5, retaining thread mouth 6, the collar 7.
Described first hollow cylinder cylindrical shell 1 is made for igelite cloth, described second hollow cylinder cylindrical shell 2 is made for rubber diaphragm, first hollow cylinder cylindrical shell 1 is enclosed within the second hollow cylinder cylindrical shell 2, and the second hollow cylinder cylindrical shell 2 upper/lower terminal is provided with O-ring seal 3.Described first hollow cylinder cylindrical shell 1 is close to the inwall of the second hollow cylinder cylindrical shell 2, and keeps straight.
Described first hollow cylinder cylindrical shell 1 diameter 300mm, wall thickness 1mm, length are 600mm.Described second hollow cylinder cylindrical shell 2 diameter 300mm, wall thickness 5mm, length are 700mm.
Implementation step:
1), by the regulation of code " earthwork test rule-coarse-grained soil triaxial compression test " (SL237-060-1999) get earth material ready, according to dry density water percentage and sample 4 size of testing requirements, calculate and take the soil sample needed for test.
2), by the soil sample got ready by the filling number of plies, be divided into several equal portions, large or fine granule should be prevented to be separated the homogeneity ensureing sample 4.
3), by porous disc be placed in specimen mount, drive water valve into, make specimen mount porous disc be filled with water to bubble-free effusion, valve-off.
4), on base tie rubber membrane, be mounted to type tube, rubber diaphragm is turned up on forming tube, and make it straight and be close to forming tube inwall.
5), in rubber membrane, be inserted in igelite cloth, and make igelite cloth straight and be close to rubber membrane inwall.
6), load ground floor soil sample and evenly stroke plane surface, after making soil sample reach expected height by the method for vibrating, more in kind insert second layer soil sample, so continue until install last one deck flattened faces, add porous disc and sample cap, tighten rubber membrane with O-ring seal 3.
7), remaining step carries out according to " earthwork test rule-coarse-grained soil triaxial compression test " (SL237-060-1999).
Claims (5)
1. the triaxial compression test sealed fixing device for coarse-grained soil specimen, comprise for the first hollow cylinder cylindrical shell (1) of fixing sample (4), the second hollow cylinder cylindrical shell (2) and O-ring seal (3), it is characterized in that, described first hollow cylinder cylindrical shell (1) is made for igelite cloth, described second hollow cylinder cylindrical shell (2) is made for rubber diaphragm, first hollow cylinder cylindrical shell (1) is enclosed within the second hollow cylinder cylindrical shell (2), and the second hollow cylinder cylindrical shell (2) upper/lower terminal is respectively equipped with O-ring seal (3).
2. a kind of triaxial compression test sealed fixing device for coarse-grained soil specimen according to claim 1, it is characterized in that, described first hollow cylinder cylindrical shell (1) is close to the inwall of the second hollow cylinder cylindrical shell (2), and keeps straight.
3. a kind of triaxial compression test sealed fixing device for coarse-grained soil specimen according to claim 1, it is characterized in that, described first hollow cylinder cylindrical shell (1) diameter 300mm, wall thickness 1mm, length are 600mm.
4. a kind of triaxial compression test sealed fixing device for coarse-grained soil specimen according to claim 1, it is characterized in that, described second hollow cylinder cylindrical shell (2) diameter 300mm, wall thickness 5mm, length are 700mm.
5. a kind of triaxial compression test sealed fixing device for coarse-grained soil specimen according to claim 1, it is characterized in that, described O-ring seal (3) is provided with hold-doun nut (5), retaining thread mouth (6), the collar (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402194.8A CN105334098A (en) | 2014-08-15 | 2014-08-15 | Sealing and fixing device of triaxial compression test for coarse-grained soil samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402194.8A CN105334098A (en) | 2014-08-15 | 2014-08-15 | Sealing and fixing device of triaxial compression test for coarse-grained soil samples |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105334098A true CN105334098A (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410402194.8A Pending CN105334098A (en) | 2014-08-15 | 2014-08-15 | Sealing and fixing device of triaxial compression test for coarse-grained soil samples |
Country Status (1)
| Country | Link |
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| CN (1) | CN105334098A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020469A (en) * | 2017-11-30 | 2018-05-11 | 湖北工业大学 | A kind of triaxial tests device and its experimental method based on fluid pressure fracturing method |
| CN112284901A (en) * | 2020-10-28 | 2021-01-29 | 贵州大学 | Pseudo-triaxial rock testing machine and using method thereof |
-
2014
- 2014-08-15 CN CN201410402194.8A patent/CN105334098A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020469A (en) * | 2017-11-30 | 2018-05-11 | 湖北工业大学 | A kind of triaxial tests device and its experimental method based on fluid pressure fracturing method |
| CN112284901A (en) * | 2020-10-28 | 2021-01-29 | 贵州大学 | Pseudo-triaxial rock testing machine and using method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160217 |
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| WD01 | Invention patent application deemed withdrawn after publication |