CN203786072U - Indoor testing device for testing strain aging of soil-water-gas - Google Patents
Indoor testing device for testing strain aging of soil-water-gas Download PDFInfo
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- CN203786072U CN203786072U CN201420094695.XU CN201420094695U CN203786072U CN 203786072 U CN203786072 U CN 203786072U CN 201420094695 U CN201420094695 U CN 201420094695U CN 203786072 U CN203786072 U CN 203786072U
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Abstract
The utility model relates to an indoor testing device for testing strain aging of soil-water-gas. The device comprises a test sample barrel, wherein a cover plate is arranged on the cover plate and a base is arranged under the cover plate, a pressurizing plate is arranged on the cover plate, the cover plate and the base are respectively provided with electrode sheets I, electrode sheets II are axially arranged on the inner wall of the test sample barrel at intervals, and the electrode sheets I and II are connected with a constant voltage resistor; the electrode sheets I on the cover plate and the base are respectively connected with the constant voltage resistor through leads, and each electrode sheet II penetrates through the wall of the test sample barrel and is connected with the constant voltage resistor through a lead. The device provided by the utility model realizes detection of change condition of resistivity of a soil body along with time and strain, is suitable for exploring the resistivity changing rule of different character soil samples under a loading condition and can be used for researching the evolution law of a three-phase medium of the soil body so as to further explore the long-term deformation effect such as solidification and creep deformation of the soil body, thereby facilitating microscomic rule research of test of the soil body and post-construction settlement rule research in engineering field.
Description
Technical field
The utility model belongs to Geotechnical Engineering test unit technical field, relates to a kind of laboratory testing rig of measuring soil-water-gas strain aging.
Background technology
Deformation rule research for the soil body, mainly concentrate in macroanalysis at present, as the high embankment of loess, the high embankment projects such as " fill out ditch and make ground, the construction of going up a hill " of extensively carrying out in the Northwest in the last few years, the research of its settlement after construction macroscopic law and formation mechanism thereof becomes important topic.Progress along with advanced technology, thin sight deformation rule research to loess has also obtained many achievements in research, but it is mainly verified, be porosity, the anisotropy of loess, the qualitative indexes such as size, shape and degree of orientation of particle, cannot detect the deformation of the soil body under dynamic changing condition, and sample preparation and test process are more loaded down with trivial details, cost is too high, simultaneously, slice test is difficult to reflect heterogeneity, the anisotropy of the soil body, and engineering application difficulty is larger.
Utility model content
The purpose of this utility model is to provide a kind of laboratory testing rig of measuring soil-water-gas strain aging, can detect the deformation of the soil body under dynamic changing condition.
The technical solution of the utility model is, measure the laboratory testing rig of soil-water-gas strain aging, comprise test specimen tube, on test specimen tube, establish cover plate, divide into base, cover plate is provided with increased pressure board, is respectively equipped with electrode slice I on cover plate and base, on test specimen tube inwall, be interval with vertically electrode slice II, electrode slice I, electrode slice II are all connected with constant voltage resistance instrument.
Feature of the present utility model is also:
Cover plate is connected with constant voltage resistance instrument by wire respectively with the electrode slice I on base, and each electrode slice II is connected with a constant voltage resistance instrument through sample barrel by a wire.
Electrode slice II is two rows, and two row's electrode slice II arrange along test specimen tube radial symmetry.
On cover plate and base, be respectively equipped with osculum.
Test specimen tube, cover plate and base are integral type structure.
Cover plate, base and test specimen tube are for revolving by a cylindric organic glass polishing type of being carved into.
Cover plate and base bond by fluid sealant and electrode slice I respectively; Electrode slice II is fixed on sample barrel by screw bolt and nut.
Osculum is separately positioned on the radius apart from 0.8 times, increased pressure board center and base center.
Test specimen tube, increased pressure board, cover plate and base are insulator organic glass, and circular electric pole piece, wire, square electrode sheet are red metal material.
The utlity model has following beneficial effect:
1, the resistivity that the utility model has been realized the soil body in time with the detection of the situation of change of strain, be applicable to explore the change in resistance rule of various trait soil sample under loading environment, can be used for studying the Evolution of soil body three-phase medium, thereby the long-term anamorphic effects such as fixed and creep of further exploring the soil body, contribute to the test of the soil body carefully to see rule research and the research of engineering site settlement after construction rule.
2, the utility model can be realized dynamic observation and effect of visualization, and quick and harmless, and easy accessibility is flexibly mobile.
Accompanying drawing explanation
Fig. 1 is the laboratory testing rig structural representation that the utility model is measured soil-water-gas strain aging;
Fig. 2 is the laboratory testing rig example structure schematic diagram that the utility model is measured soil-water-gas strain aging;
Fig. 3 is I-I sectional view of Fig. 2;
Fig. 4 is II-II sectional view of Fig. 2;
Fig. 5 is III-III sectional view of Fig. 2.
In figure, 1. test specimen tube, 2. electrode slice I, 3. wire, 4. electrode slice II, 5. osculum, 6. increased pressure board, 7. cover plate, 8. base, 9. bolt and nut, 10. rubber plug.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further details.
The laboratory testing rig of measuring soil-water-gas strain aging, referring to Fig. 1, comprises a monoblock type test specimen tube 1, has cover plate 7 on test specimen tube 1, under have base 8, cover plate 7, base 8, test specimen tube 1 three revolve by a cylindric organic glass polishing type of being carved into; Cover plate 7 is provided with at least one cylindric increased pressure board 6, in order to sample pressurization, on cover plate 7, be also provided with at least one electrode slice I 2 and a wire 3, electrode slice I 2 bonds as a whole with cover plate 7 by fluid sealant, electrode slice I 2 is drawn by wire 3, is connected with constant voltage resistance instrument; Base plate 8 is provided with at least one electrode slice I 2 and a wire 3, and electrode slice I 2 and base plate 8 bond as a whole by fluid sealant, and electrode slice I 2 is drawn by wire 3, connects with constant voltage resistance instrument.On test cylinder 1 inwall, be interval with from the top down electrode slice II 4, electrode slice II 4 is two rows, and symmetry is embedded on test cylinder 1 inwall, fixing by screw bolt and nut 9, and be drawn out to organic glass test specimen tube 1 outer wall by wire 3, and be connected with constant voltage resistance instrument, measure radially resistivity.Cover plate 7 and base plate 8 are respectively equipped with at least one osculum 5.Osculum 5 is furnished with rubber plug 10.
Embodiment, measures the laboratory testing rig of soil-water-gas strain aging, comprises a monoblock type test specimen tube 1, has cover plate 7 on test specimen tube 1, under have base 8, cover plate 7, base 8, test specimen tube 1 three revolve by a cylindric organic glass polishing type of being carved into; Cover plate 7 is provided with a columned increased pressure board 6, in order to pressurize to sample, on cover plate 7, be also provided with a circular electrode slice I 2 and a wire 3, circular electrode slice I 2 bonds as a whole with cover plate 7 by fluid sealant, circular electrode slice I 2 is drawn by wire 3, is connected with constant voltage resistance instrument; Base plate 8 is provided with a circular electrode slice I 2 and a wire 3, and circular electrode slice I 2 and base plate 8 bond as a whole by fluid sealant, and circular electrode slice I 2 is drawn with constant voltage resistance instrument and is connected by wire 3.On test cylinder 1 inwall, be arranged with the foursquare electrode slice II 4 of two rows, the foursquare electrode slice II 4 of every row is interval setting from the top down on test cylinder 1 inwall, 10 foursquare electrode slice II 4 of every row, symmetry is embedded on test cylinder 1 inwall, fixing by screw bolt and nut 9, electrode slice II 4 is drawn out to outside organic glass test specimen tube 1 and is connected with a constant voltage resistance instrument by a wire 3.Cover plate 7 and base plate 8 are respectively equipped with at least one osculum 5.Osculum 5 is furnished with rubber plug 10.
Osculum 5 on cover plate 7 is arranged on apart from increased pressure board 7 center 4/5 radius, and the osculum 5 on base 8 is arranged on apart from base 8 center 4/5 radius, by soft rubber plug 10, realizes osculum 5 draining and not drainings.On increased pressure board 6, connect strainometer, realize the vertical displacement at kinetic measurement soil sample top.So just reached and measured axially and radially resistivity and the vertically effect of compression deformation simultaneously.
Test specimen tube 1 is that the insulator organic glass that is 10mm by internal diameter 112mm, thickness is made, and is highly 150mm, and cover plate 7 and base 8 are to be also that the organic glass that 150mm, thickness are about 10mm is made by external diameter.
Circular electrode slice I 2 diameters are that 110mm, thickness are 1mm, and foursquare electrode slice II 4 is of a size of 15mm * 15mm, and wire 3 diameters are 2mm, and the diameter of bolt is 5mm, and osculum 5 diameters are 2mm, and neighbouring two row's bolt distances of shaft centers are 20mm.
Circular electrode slice I 2, wire 3, foursquare electrode slice II 4, bolt, nut 9 are red metal and make.
Using method is as follows:
1, prepare sample: according to the specified layers compacted soil samples of indoor fixed compression test (< < Standard for test methods of earthworks > >-GB/T50123-1999), soil sample is made to the sample of reinventing with certain initial aqueous rate, dry density or saturation degree, also can be cut into undisturbed by original position soil sample soil sample barrel.
2, sample is placed in moisturizing cylinder to standing 24 hours, stirs sample up and down so that the inner water percentage of sample keeps evenly during standing.
3, sample is positioned in test specimen tube 1, and wire 3 is connected on constant voltage resistance instrument, mobilism monitoring sample is resistivity axially and radially, strainometer is placed in to increased pressure board 6 tops, the vertical deformation of kinetic measurement sample in loading procedure simultaneously.Whole observation process can be taked artificial reading, also can adopt machine reading, the technology of this respect is quite ripe, the resistivity of the monitoring soil body that can be simple, quick, harmless by this device in compression process and strain be trend over time, thereby in conjunction with the correlation theory of soil mechanics, further investigate water translocation process and the structure evolution mechanism of inside soil body.
Claims (9)
1. measure the laboratory testing rig of soil-water-gas strain aging, it is characterized in that, comprise test specimen tube (1), on described test specimen tube (1), establish cover plate (7), divide into base (8), described cover plate (7) is provided with increased pressure board (6), on described cover plate (7) and base (8), is respectively equipped with electrode slice I (2), on described test specimen tube (1) inwall, be interval with vertically electrode slice II (4), described electrode slice I (2), electrode slice II (4) are all connected with constant voltage resistance instrument.
2. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 1,
It is characterized in that, described cover plate (7) is connected with constant voltage resistance instrument by wire (3) respectively with the electrode slice I (2) on base (8), and each electrode slice II (4) is connected with a constant voltage resistance instrument through test specimen tube (1) wall by a wire (3).
3. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 1 or 2, is characterized in that, described electrode slice II (4) is two rows, and two row's electrode slice II (4) are along test specimen tube (1) radial symmetry setting.
4. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 1 or 2, is characterized in that, on described cover plate (7) and base (8), is respectively equipped with osculum (5).
5. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 1 or 2, is characterized in that, described test specimen tube (1), cover plate (7) and base (8) are integral type structure.
6. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 1 or 2, is characterized in that, described cover plate (7), base (8) and test specimen tube (1) are for revolving by a cylindric organic glass polishing type of being carved into.
7. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 1 or 2, is characterized in that, described cover plate (7) and base (8) are respectively by fluid sealant and electrode slice I (2) bonding; Described electrode slice II (4) is fixed on test specimen tube (1) wall by screw bolt and nut (9).
8. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 3, is characterized in that, the osculum of telling (5) be separately positioned on the radius apart from 0.8 times, increased pressure board (6) center and base (8) center.
9. the laboratory testing rig of mensuration soil-water-gas strain aging as claimed in claim 1 or 2, it is characterized in that, described test specimen tube (1), increased pressure board (6), cover plate (7) and base (8) are insulator organic glass, and described electrode slice I (2), electrode slice II (4), wire (3) are red metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420094695.XU CN203786072U (en) | 2014-03-04 | 2014-03-04 | Indoor testing device for testing strain aging of soil-water-gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420094695.XU CN203786072U (en) | 2014-03-04 | 2014-03-04 | Indoor testing device for testing strain aging of soil-water-gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786072U true CN203786072U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420094695.XU Expired - Fee Related CN203786072U (en) | 2014-03-04 | 2014-03-04 | Indoor testing device for testing strain aging of soil-water-gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324045A (en) * | 2016-11-01 | 2017-01-11 | 西安理工大学 | Device for testing electric conductivity and soil-water characteristics of loess |
| CN108824502A (en) * | 2018-07-05 | 2018-11-16 | 浙江工业大学 | A kind of Multi-functional indoor model test apparatus for the processing of weak soil preloading method |
| CN112485302A (en) * | 2020-11-17 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Method and device for measuring anisotropy in soil body compression process |
-
2014
- 2014-03-04 CN CN201420094695.XU patent/CN203786072U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324045A (en) * | 2016-11-01 | 2017-01-11 | 西安理工大学 | Device for testing electric conductivity and soil-water characteristics of loess |
| CN108824502A (en) * | 2018-07-05 | 2018-11-16 | 浙江工业大学 | A kind of Multi-functional indoor model test apparatus for the processing of weak soil preloading method |
| CN112485302A (en) * | 2020-11-17 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Method and device for measuring anisotropy in soil body compression process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20210304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |