CN208520864U - A kind of device for big particle diameter soil body microdilatancy testing experiment - Google Patents
A kind of device for big particle diameter soil body microdilatancy testing experiment Download PDFInfo
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- CN208520864U CN208520864U CN201821240178.3U CN201821240178U CN208520864U CN 208520864 U CN208520864 U CN 208520864U CN 201821240178 U CN201821240178 U CN 201821240178U CN 208520864 U CN208520864 U CN 208520864U
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- particle diameter
- microdilatancy
- big particle
- soil body
- testing experiment
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Abstract
A kind of device for big particle diameter soil body microdilatancy testing experiment, including apparatus main body, apparatus main body are made of storing apparatus and measurement acquisition device, and the apparatus main body is arranged in temperature control box；The storing apparatus is made of drainage bottom plate and the accommodation tube being arranged in above drainage bottom plate, acquisition device is measured to be arranged right above accommodation tube, measuring acquisition device includes dynamometer and Light deformation meter, dynamometer and Light deformation meter are fixed in metal frame by connecting bolt, and dynamometer and dial gauge are connect by adjusting rod with top plate top surface.Using the above structure, the problems of the prior art are solved, the measurement to big particle diameter soil body microdilatancy is realized, have filled up the blank to the test of micro-expansibility containing big particle diameter soil body.
Description
Technical field
The utility model relates to soil expansion experimental rigs, especially a kind of to be used for big particle diameter soil body microdilatancy testing experiment
Device.
Background technique
With the rapid development of our country's economy, various regions engineering construction is carried out extensively, and step by step input uses.However, due to
Western and northern special geographical location and natural climate condition, create salinized soil and other various special compositions etc.
The special soil body, to railway, highway etc. to the construction and safe handling of deformation sensitive engineering structure bring certain difficulty and
Inconvenience, especially high-speed iron track are very sensitive to the arch deformation on basis, and small dilatancy may result in route
The comfort level that irregularity influences driving even jeopardizes traffic safety.It is thus necessary to determine that the dilatancy of used filler, to ensuring
The later period stability on basis is particularly important.In the past, in engineering practice, influence of the microdilatancy deformation to building is slight, does not cause
Concern.Domestic and international soil expansion performance testing device is only applicable to test fine grained soil, is not able to satisfy the micro- swollen of big particle diameter soil body
Swollen test.For the filler containing more big partial size block, usually screen out large-size particles when dilatancy test,
Then the dilatancy of the soil body is tested and is evaluated, micro-expansibility test requirements document is not achieved in experimental rig and method.Therefore existing
Some dilatancy test results, often certain security risk is buried in the operation to deformation sensitive engineering.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of for big particle diameter soil body microdilatancy testing experiment
Device solves the problems of the prior art, realizes the direct measurement to big particle diameter soil body microdilatancy, has filled up to big partial size
The blank of soil body micro-expansibility test.
It is a kind of micro- for big particle diameter soil body that in order to solve the above technical problems, the technical scheme adopted by the utility model is:
The device of testing experiment, including apparatus main body are expanded, apparatus main body is made of storing apparatus and measurement acquisition device, the dress
Main body is set to be arranged in temperature control box；
The storing apparatus is made of drainage bottom plate and the accommodation tube being arranged in above drainage bottom plate, measurement acquisition dress
It installs right above accommodation tube, measurement acquisition device includes dynamometer and Light deformation meter, dynamometer and Light deformation
Meter is fixed in metal frame by connecting bolt, and dynamometer and Light deformation meter are connected by adjusting rod and top plate top surface
It connects.
In preferred scheme, the accommodation tube is nested to form by multiple torus, and torus outer wall is also arranged with fastening
Sleeve.
In preferred scheme, the drainage bottom plate is equipped with the circle fixed for accommodation tube lower end and fastening sleeve insertion
Connected in star is additionally provided with for permeable first through hole on drainage bottom plate.
In preferred scheme, one layer of basin sidewall for fixed metal frame, sink are additionally provided on the drainage bottom plate
The outermost layer of drainage bottom plate is arranged in side wall, and metal frame is arranged at the top of basin sidewall.
In preferred scheme, the torus is equipped with the second through-hole, is inserted with temperature sensor in the second through-hole.
In preferred scheme, the adjusting rod is fixed at the top of top plate, dynamometer and Light deformation meter
Test lead and adjusting rod upper-end contact.
In preferred scheme, in the upper and lower ends of soil sample one pressure sensor is installed respectively, it is accurate to promote testing result
Degree.
In use, the following steps are included:
1) native sample is loaded into accommodation tube, and soil sample is compacted；
2) top plate lid is located at the top of soil sample, guarantees contact of the top plate with soil sample；
3) measurement acquisition device is mounted on above accommodation tube, adjusts the adjusting rod height on top plate, make measurement acquisition dress
Adjusting rod on the test cap and top plate set is in close contact；
4) acquisition device will be measured by connecting wire to be attached data acquisition module.
In preferred scheme, when carrying out expansion test related with temperature, apparatus main body is installed on temperature before step 4)
It controls in case.
In preferred scheme, when carrying out immersion expansion test, it is filled with water to before step 4) into basin sidewall inner space
Preset value.
A kind of device for big particle diameter soil body microdilatancy testing experiment provided by the utility model, by using above-mentioned
Structure has the advantages that
(1) more accurate experimental data measurement is realized by multilayer temperature sensor and dynamometer to obtain；
(2) accommodation tube is formed using multiple torus nestings, realizes soil sample in expansion process, torus has soil sample
Sufficiently high constraint reduces error caused by radial deformation, while nested increase lubricant method between becket, can greatly reduce
Friction ensures soil sample dilatancy in axial Free Transform, and avoid fixed accommodation tube side wall causes to test to active force
As a result inaccurate situation, also avoids multiple stack annulus grogs after dilatancy and squeezes out from gap；
(3) two Light deformation meters are symmetrical arranged, and can be compared by the test data of two Light deformation meters, from
Whether and it is uniform to observe soil sample expansion.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 is the apparatus main body structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram during the utility model test.
Fig. 3 is the drainage structural diagram of base plate of the utility model.
Fig. 4 is the accommodation tube structural schematic diagram of the utility model.
Fig. 5 is the torus structural schematic diagram of the utility model.
In figure: soil sample 1, temperature control box 2, accommodation tube 3, fastening sleeve 4, basin sidewall 5, permeable stone 6, drainage bottom plate 7, top plate
8, metal frame 9, apparatus main body 10, dynamometer 11, Light deformation meter 12, adjusting rod 13, first through hole 14, groove 15, second
Through-hole 16, connects bolt 17, torus 18, and storing apparatus 19 measures acquisition device 20.
Specific embodiment
Embodiment 1:
Such as Fig. 1, a kind of device for big particle diameter soil body microdilatancy testing experiment, including apparatus main body 10, apparatus main body
10 are made of storing apparatus 19 and measurement acquisition device 20, and the apparatus main body 10 is arranged in temperature control box 2；
The storing apparatus 19 is made of drainage bottom plate 7 and the accommodation tube 3 being arranged in above drainage bottom plate 7, is measured
For the setting of acquisition device 20 right above accommodation tube 3, measurement acquisition device 20 includes dynamometer 11 and Light deformation meter 12, is surveyed
Power meter 11 and Light deformation meter 12 are fixed in metal frame 9 by connecting bolt 17, dynamometer 11 and Light deformation measurement
Meter 12 is connect by adjusting rod 13 with 8 top surface of top plate.
In preferred scheme, the accommodation tube 3 is nested to form by multiple torus 18, and 18 outer wall of torus is also arranged with
Fastening sleeve 4.The structure stacked using torus 18, so that phase can occur each other for torus 18 when soil sample 1 expands
To axial free movement, torus 18 along the axial movement of accommodation tube 3 and can be spaced each other with the volume expansion of soil sample 1
It opens, therefore the expansion of soil sample 1 is in the axial direction by any obstruction, but free wxpansion, the state status phase of this and practical soil sample
Unanimously, to can accurately reflect the soil expansion in environment using swell increment measured by experimental provision 10 according to the present invention
Situation.
In addition there are a fixed gaps between accommodation tube 3 and fastening sleeve 4, to guarantee that accommodation tube 3 can be expanded with soil sample 1
And along axially free displacement, guarantee that measurement acquisition device 20 can be measured including lower layer's soil body swell increment and upper layer soil body swell increment
Overall expansion amount.
In preferred scheme, the drainage bottom plate 7 is equipped with to be fixed for 3 lower end of accommodation tube and the insertion of fastening sleeve 4
Circular groove 15, be additionally provided with for permeable first through hole 14 on drainage bottom plate 7.
In preferred scheme, one layer of basin sidewall 5 for fixed metal frame 9, water are additionally provided on the drainage bottom plate 7
The outermost layer of drainage bottom plate 7 is arranged in groove sidewall 5, and the setting of metal frame 9 is at 5 top of basin sidewall.
In preferred scheme, the torus 18 is equipped with the second through-hole 16, and temperature biography is inserted in the second through-hole 16
Sensor.
In preferred scheme, the adjusting rod 13 is fixed at 8 top of top plate, dynamometer 11 and Light deformation measurement
The test lead and 13 upper-end contact of adjusting rod of meter 12.
Embodiment 2:
On the basis of embodiment 1, big particle diameter soil body microdilatancy testing experiment is carried out using following steps:
1) native sample 1 is loaded into accommodation tube 3, and soil sample 1 is compacted；
2) lid of top plate 8 is located at 1 top of soil sample, guarantees the contact of top plate 8 and soil sample 1；
3) measurement acquisition device 20 is mounted on 3 top of accommodation tube, adjusts 13 height of adjusting rod on top plate 8, makes to measure
The adjusting rod 13 on test cap and top plate 8 in acquisition device 20 is in close contact；
4) data acquisition module is attached by acquisition device 20 is measured by connecting wire.
In preferred scheme, when carrying out microdilatancy related with temperature test, apparatus main body 10 is installed before step 4)
In in temperature control box 2.
In preferred scheme, when carrying out immersion expansion test, it is filled with water to before step 4) into 5 inner space of basin sidewall
Preset value.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention
Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (6)
1. a kind of device for big particle diameter soil body microdilatancy testing experiment, including apparatus main body (10), it is characterized in that: device master
Body (10) is made of storing apparatus (19) and measurement acquisition device (20), and the apparatus main body (10) is arranged in temperature control box (2)
It is interior；
The storing apparatus (19) is made of drainage bottom plate (7) and the accommodation tube (3) being arranged above drainage bottom plate (7),
Acquisition device (20) setting is measured right above accommodation tube (3), measurement acquisition device (20) includes dynamometer (11) and is slightly variable
Shape meter (12), dynamometer (11) and Light deformation meter (12) are fixed on metal frame (9) by connecting bolt (17),
Dynamometer (11) and Light deformation meter (12) are connect by adjusting rod (13) with top plate (8) top surface.
2. a kind of device for big particle diameter soil body microdilatancy testing experiment according to claim 1, it is characterised in that: institute
The accommodation tube (3) stated is nested to form by multiple torus (18), and torus (18) outer wall is also arranged with fastening sleeve (4).
3. a kind of device for big particle diameter soil body microdilatancy testing experiment according to claim 2, it is characterised in that: institute
The drainage bottom plate (7) stated is equipped with the circular groove (15) fixed for accommodation tube (3) lower end and fastening sleeve (4) insertion, filter
It is additionally provided on water-bed plate (7) for permeable first through hole (14).
4. a kind of device for big particle diameter soil body microdilatancy testing experiment according to claim 3, it is characterised in that: institute
One layer of basin sidewall (5) for fixed metal frame (9) is additionally provided on the drainage bottom plate (7) stated, basin sidewall (5) setting is being filtered
The outermost layer of water-bed plate (7), metal frame (9) setting is at the top of basin sidewall (5).
5. a kind of device for big particle diameter soil body microdilatancy testing experiment according to claim 2, it is characterised in that: institute
The torus (18) stated is equipped with the second through-hole (16), is inserted with temperature sensor in the second through-hole (16).
6. a kind of device for big particle diameter soil body microdilatancy testing experiment according to claim 1, it is characterised in that: institute
The adjusting rod (13) stated is fixed at the top of top plate (8), the test lead of dynamometer (11) and Light deformation meter (12) with
Adjusting rod (13) upper-end contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821240178.3U CN208520864U (en) | 2018-08-02 | 2018-08-02 | A kind of device for big particle diameter soil body microdilatancy testing experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821240178.3U CN208520864U (en) | 2018-08-02 | 2018-08-02 | A kind of device for big particle diameter soil body microdilatancy testing experiment |
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| Publication Number | Publication Date |
|---|---|
| CN208520864U true CN208520864U (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821240178.3U Active CN208520864U (en) | 2018-08-02 | 2018-08-02 | A kind of device for big particle diameter soil body microdilatancy testing experiment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965060A (en) * | 2020-08-03 | 2020-11-20 | 河海大学 | Press-in type on-site modulus of resilience measuring device |
| CN113252883A (en) * | 2021-05-26 | 2021-08-13 | 中国铁路设计集团有限公司 | Roadbed filler expansion tester and testing method and sample preparation method thereof |
-
2018
- 2018-08-02 CN CN201821240178.3U patent/CN208520864U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965060A (en) * | 2020-08-03 | 2020-11-20 | 河海大学 | Press-in type on-site modulus of resilience measuring device |
| CN111965060B (en) * | 2020-08-03 | 2023-06-09 | 河海大学 | Press-in type on-site rebound modulus measuring device |
| CN113252883A (en) * | 2021-05-26 | 2021-08-13 | 中国铁路设计集团有限公司 | Roadbed filler expansion tester and testing method and sample preparation method thereof |
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