CN207281068U - A kind of each salt marsh earth salt expansive force test device to confined pressure of consideration - Google Patents
A kind of each salt marsh earth salt expansive force test device to confined pressure of consideration Download PDFInfo
- Publication number
- CN207281068U CN207281068U CN201721333280.3U CN201721333280U CN207281068U CN 207281068 U CN207281068 U CN 207281068U CN 201721333280 U CN201721333280 U CN 201721333280U CN 207281068 U CN207281068 U CN 207281068U
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- CN
- China
- Prior art keywords
- oil pressure
- flexible rubber
- storehouse
- pressure storehouse
- balancing gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 150000003839 salts Chemical class 0.000 title claims abstract description 59
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 239000003921 oil Substances 0.000 claims abstract description 82
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 24
- 101150054854 POU1F1 gene Proteins 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 206010000060 Abdominal distension Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000028016 temperature homeostasis Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A kind of each salt marsh earth salt expansive force test device to confined pressure of consideration is the utility model is related to, the test device includes rigid pressure bucket and its internal flexible rubber balancing gate pit；Flexible rubber balancing gate pit is located at rigid pressure bucket center, is provided with top oil pressure storehouse above flexible rubber balancing gate pit, lower section is provided with lower part oil pressure storehouse, and side ring set has side oil pressure storehouse；Hydraulic oil is filled in top oil pressure storehouse, lower part oil pressure storehouse and side oil pressure storehouse；Flexible rubber balancing gate pit top surface, bottom surface and side are both provided with built-in force snesor.The utility model can simulate any position soil body real bearing state inside roadbed, apply the humidity province of test requirements document at the same time, it can realize big temperature difference temperature control, in subgrade soil respectively in the case of different confined pressures, the salt expansive force and salt bulk of salinized soil are measured at the same time, the experimental conditions such as pressure applied state, test temperature are consistent with road foundation soil body actual loading and temperature environment, and result of the test is closer actual.
Description
Technical field
It the utility model is related to a kind of test equipment of salt marsh earth salt expansive force, and in particular to a kind of each salt to confined pressure of consideration
Stain earth salt expansive force test device.
Background technology
In China, the main integrated distribution of salinized soil is in Northwest inland arid area, such as Xinjiang, Qinghai, Gansu province, and salt
Stain degree is higher.The railway and highway engineering built in these areas, secondary salinization inevitably occurs for roadbed, in daytime
The extreme environment of evening university's temperature difference and the seasonal big temperature difference, the diseases such as ground and secondary salinization roadbed generation salt are swollen, so as to lead
The destruction of road foundation is caused, becomes the principal element for restricting highway construction with influencing highway operation quality.Salt occurs for highway subgrade
Abdominal distension is done harm to（Degree）There are much relations with salt expansive force.
At present, China be in the starting stage to the research of saline soil area road, and highway is equal with the industry standard specification such as building
The test method of test salt expansive force is not proposed.Investigated by domestic and international present Research, document《Typical natural salt dirting soil thawing
Experimental study that cyclic salt is swollen》Etc. proposing salt marsh earth salt bulk test method, its test method is mainly：Sample is placed on
End is uncharged in rigid container, is placed dial gauge on sample top, is measured the salt bulk in sample freezing process.Such a experiment
The shortcomings that be：Sample is limited in side Complete Bind, upper end freely activity（It is not subject to pressure）In the case of measure its salt bulk, try
Condition is tested with road foundation soil body actual loading situation not to be inconsistent.From soil mechanics knowledge, a certain soil body in real road roadbed,
Its upper and lower and side all directions pressure（Stress）It is different.It is theoretical from interaction force, salt marsh earth salt expansive force and constraint bar
Part（Restraining force）It is related.
Utility model content
The purpose of this utility model is to provide a kind of each salt marsh earth salt expansive force test device to confined pressure of consideration, can be effective
Ground reflects the salt expansive force in the case of any position soil body compression in actual roadbed.
Technical solution is used by the utility model：
A kind of each salt marsh earth salt expansive force test device to confined pressure of consideration, it is characterised in that：
The test device includes rigid pressure bucket and its internal flexible rubber balancing gate pit；
Flexible rubber balancing gate pit is located at rigid pressure bucket center, and top oil pressure storehouse is provided with above flexible rubber balancing gate pit,
Lower section is provided with lower part oil pressure storehouse, and side ring set has side oil pressure storehouse；In top oil pressure storehouse, lower part oil pressure storehouse and side oil pressure storehouse
Fill hydraulic oil；
Flexible rubber balancing gate pit top surface, bottom surface and side are both provided with built-in force snesor.
Flexible rubber balancing gate pit top surface is provided with displacement sensor.
Top oil pressure storehouse, lower part oil pressure storehouse and side oil pressure storehouse are both provided with the oil pressure mouth of pipe and external oil pressure pump.
The cylindrical inner wall surrounding in side oil pressure storehouse is provided with copper pipe, the external temperature equipment of copper pipe.
Rigid pressure bucket and exposed copper pipe are wrapped with heat-preservation cotton.
Temperature equipment is low-temperature circulating water bath.
Rigid pressure bucket is acrylic material；
Flexible rubber balancing gate pit is flexible rubber membrane material, i.e., between flexible rubber balancing gate pit and top oil pressure storehouse, flexible
It is flexible rubber membrane material between rubber pressure room and lower part oil pressure storehouse and between flexible rubber balancing gate pit and side oil pressure storehouse
Material；
Between top oil pressure storehouse and side oil pressure storehouse, between lower part oil pressure storehouse and side oil pressure storehouse be acrylic material
Partition plate.
The utility model has the following advantages：
（1）The utility model can simulate any position soil body real bearing state inside roadbed, while apply experiment and want
The humidity province asked, it is possible to achieve big temperature difference temperature control, in subgrade soil respectively in the case of different confined pressures, while measures the salt of salinized soil
Expansive force and salt bulk.
（2）The experimental conditions such as the utility model experiment pressure applied state, test temperature and the road foundation soil body are real
Border stress is consistent with temperature environment, and result of the test is closer actual.
（3）Shaping test piece is using existing《Highway earthwork test rule》Heavy compaction method is molded, and sample dimensions have general
Property, it is comparable with other experiments.Shaping test piece size is larger, reduces experiment dimensional effect, is applicable in soil sample grain group scope
It is wider.
（4）Humidity province degree of amplitude modulation is big.By connecting exterior temperature controllable equipment, it is possible to achieve -40 DEG C~100 DEG C humidity provinces
（Or other humidity provinces）Various temperature gradient, realizes the simulation to various extreme temperature environments.
（5）The utility model proposes test equipment and application method fill up the skies of the industry standard specifications such as highway and building
In vain.
Brief description of the drawings
Fig. 1 is the utility model experimental rig structure chart.
In figure, 1-flexible rubber balancing gate pit, 2-rigid pressure bucket, 3-top oil pressure storehouse, 4-lower part oil pressure storehouse, 5-
Side oil pressure storehouse, 6-temperature equipment（Low-temperature circulating water bath）, 7-copper pipe, 8-top oil pressure storehouse oil pressure mouth of pipe, 9-lower part
The oil pressure storehouse oil pressure mouth of pipe, 10-side oil pressure storehouse oil pressure mouth of pipe, 11-built-in force snesor, 12-displacement sensor.
Embodiment
The utility model is described in detail with reference to embodiment.
The utility model is related to consider each salt marsh earth salt expansive force test device to confined pressure, can effectively on the soil body,
It is lower to apply different pressures with side, to simulate any true stressing conditions of the position soil body in roadbed inside, each under different confined pressures
Measure the salt expansive force of salinized soil.Meanwhile the salt bulk of salinized soil can be measured, so that the swollen coefficient of the salt for calculating salinized soil.Examination
Experiment device is simple, has big temperature difference temperature control, applies different confined pressures to sample while measure the spy of salt marsh earth salt expansive force and salt bulk
Point.
The test device includes rigid pressure bucket 2 and its internal flexible rubber balancing gate pit 1.Flexible rubber balancing gate pit 1
Internal diameter 152mm, high 120mm.Rigid pressure bucket 2 internal diameter 552mm, outside diameter 584mm, wall thickness 16mm, high 552mm.Flexible rubber pressure
Power room 1 is located at the center of rigid pressure bucket 2, and the top of flexible rubber balancing gate pit 1 is provided with top oil pressure storehouse 3, freely can dismantle and pacify
Dress, to place molding sample, lower section is provided with lower part oil pressure storehouse 4, and side ring set has side oil pressure storehouse 5, is that annulus column is empty
Cavity.Filling hydraulic oil, confined pressure is provided for sample in top oil pressure storehouse 3, lower part oil pressure storehouse 4 and side oil pressure storehouse 5.Top oil pressure
The internal diameter in storehouse 3 and lower part oil pressure storehouse 4, outside diameter, wall thickness are identical with rigid pressure bucket 2, the interior high 200mm in storehouse.Side oil pressure storehouse 5 is cylindrical
Diameter 552mm, Inner circular diameter 152mm, wall thickness 16mm, pillar height 120mm.
Rigid pressure bucket 2 is acrylic material；Flexible rubber balancing gate pit 1 is flexible rubber membrane material, i.e. flexible rubber pressure
Between power room 1 and top oil pressure storehouse 3, between flexible rubber balancing gate pit 1 and lower part oil pressure storehouse 4 and flexible rubber balancing gate pit 1 with
It is flexible rubber membrane material between side oil pressure storehouse 5；Between top oil pressure storehouse 3 and side oil pressure storehouse 5, lower part oil pressure storehouse 4 with
It is the annular partition of acrylic material between side oil pressure storehouse 5, internal diameter 152mm, outside diameter 552mm, wall thickness 16mm.
Top oil pressure storehouse 3, lower part oil pressure storehouse 4 and side oil pressure storehouse 5 are both provided with the oil pressure mouth of pipe and external oil pressure pump.Side
5 cylindrical inner wall surrounding of oil pressure storehouse is provided with copper pipe 7, for heat transfer, the external temperature equipment 6 of copper pipe 7.Temperature equipment 6 is low temperature
Recirculated water bath cabinet, -40 DEG C of thermoregulation range~100 DEG C.Rigid pressure bucket 2 and exposed copper pipe 7 are wrapped with heat-preservation cotton.
1 top surface of flexible rubber balancing gate pit, bottom surface and side are both provided with built-in force snesor 11.Flexible rubber balancing gate pit 1
Top surface is provided with displacement sensor 12.
The application method of each salt marsh earth salt expansive force test device to confined pressure of above-mentioned consideration, comprises the following steps：
（1）By testing the saliferous type for determining soil sample, salt content, moisture content etc., the compactness of sample as requested is adopted
With existing《Highway earthwork test rule》Heavy compaction method is molded, and shaping test piece size is internal diameter 152mm, the cylinder of high 120mm
Body.
（2）Top oil pressure storehouse 3 is opened, sample is carefully placed into flexible rubber balancing gate pit 1, top oil pressure storehouse 3 is resetted
It is and fixed.
（3）According to position residing for the soil body inside roadbed, the soil body is calculated（Cell cube）Respectively to stress and level.By it is upper,
Under, the side oil pressure storehouse oil pressure mouth of pipe is connected with exterior oil pressure pump, and applies each to oil pressure of calculating or design.
（4）The pressure value of force snesor 11 built in reading is surveyed, upper end, lower end and side sample pressure value are denoted as respectively：NOn 0、
NUnder 0、N0 side.Respectively to after pressure value stabilization, displacement sensor 12 is returned to zero or recorded initial reading.
（5）Close each oil pressure mouth of pipe, voltage stabilizing.Adjust temperature equipment 6（Low-temperature circulating water bath）, from+15 DEG C~-15 DEG C tune
Section（- 40 DEG C~100 DEG C arbitrary temp areas can be set）, often cool down 5 DEG C of holding 30~40min of constant temperature, measures the humidity province pressure
Value NOn 1、NUnder 1、N1 side（kPa）With shift value Δ h1（mm）, Δ h1The as salt bulk of the humidity province.
（6）The calculating of the salt expansive force Δ N and swollen coefficient δ of salt：
ΔNOn (0-1)=NOn 1-NOn 0, δ=Δ h1/120
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality
Type specification and any equivalent conversion taken technical solutions of the utility model, are the claim institute of the utility model
Cover.
Claims (7)
- A kind of 1. each salt marsh earth salt expansive force test device to confined pressure of consideration, it is characterised in that：The test device includes rigid pressure bucket（2）Internal flexible rubber balancing gate pit with it（1）；Flexible rubber balancing gate pit（1）Positioned at rigid pressure bucket（2）Center, flexible rubber balancing gate pit（1）Top is provided with top oil Press storehouse（3）, lower section is provided with lower part oil pressure storehouse（4）, side ring set has side oil pressure storehouse（5）；Top oil pressure storehouse（3）, lower part oil Press storehouse（4）With side oil pressure storehouse（5）Interior filling hydraulic oil；Flexible rubber balancing gate pit（1）Top surface, bottom surface and side are both provided with built-in force snesor（11）.
- A kind of 2. each salt marsh earth salt expansive force test device to confined pressure of consideration according to claim 1, it is characterised in that：Flexible rubber balancing gate pit（1）Top surface is provided with displacement sensor（12）.
- A kind of 3. each salt marsh earth salt expansive force test device to confined pressure of consideration according to claim 1, it is characterised in that：Top oil pressure storehouse（3）, lower part oil pressure storehouse（4）With side oil pressure storehouse（5）It is both provided with the oil pressure mouth of pipe and external oil pressure pump.
- A kind of 4. each salt marsh earth salt expansive force test device to confined pressure of consideration according to claim 1, it is characterised in that：Side oil pressure storehouse（5）Cylindrical inner wall surrounding is provided with copper pipe（7）, copper pipe（7）External temperature equipment（6）.
- A kind of 5. each salt marsh earth salt expansive force test device to confined pressure of consideration according to claim 4, it is characterised in that：Rigid pressure bucket（2）With exposed copper pipe（7）It is wrapped with heat-preservation cotton.
- A kind of 6. each salt marsh earth salt expansive force test device to confined pressure of consideration according to claim 4, it is characterised in that：Temperature equipment（6）For low-temperature circulating water bath.
- A kind of 7. each salt marsh earth salt expansive force test device to confined pressure of consideration according to claim 1, it is characterised in that：Rigid pressure bucket（2）For acrylic material；Flexible rubber balancing gate pit（1）For flexible rubber membrane material, i.e. flexible rubber balancing gate pit（1）With top oil pressure storehouse（3）Between, Flexible rubber balancing gate pit（1）With lower part oil pressure storehouse（4）Between and flexible rubber balancing gate pit（1）With side oil pressure storehouse（5）Between It is flexible rubber membrane material；Top oil pressure storehouse（3）With side oil pressure storehouse（5）Between, lower part oil pressure storehouse（4）With side oil pressure storehouse（5）Between be Ya Ke The partition plate of dead-wood material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721333280.3U CN207281068U (en) | 2017-10-17 | 2017-10-17 | A kind of each salt marsh earth salt expansive force test device to confined pressure of consideration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721333280.3U CN207281068U (en) | 2017-10-17 | 2017-10-17 | A kind of each salt marsh earth salt expansive force test device to confined pressure of consideration |
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| Publication Number | Publication Date |
|---|---|
| CN207281068U true CN207281068U (en) | 2018-04-27 |
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ID=61980420
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|---|---|---|---|
| CN201721333280.3U Withdrawn - After Issue CN207281068U (en) | 2017-10-17 | 2017-10-17 | A kind of each salt marsh earth salt expansive force test device to confined pressure of consideration |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632139A (en) * | 2017-10-17 | 2018-01-26 | 中交第公路勘察设计研究院有限公司 | Consider each salt marsh earth salt expansive force test device and usage to confined pressure |
| CN109086511A (en) * | 2018-07-24 | 2018-12-25 | 中铁二院工程集团有限责任公司 | A kind of Coarse Saline embankment structure design method based on protuberance Deformation control |
| CN110082191A (en) * | 2019-05-29 | 2019-08-02 | 海南大学 | A kind of model test soil case that novel confining pressure is controllable |
| CN107632139B (en) * | 2017-10-17 | 2024-07-16 | 中交第一公路勘察设计研究院有限公司 | Saline soil salt expansion force testing device considering confining pressure in all directions and application method |
-
2017
- 2017-10-17 CN CN201721333280.3U patent/CN207281068U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632139A (en) * | 2017-10-17 | 2018-01-26 | 中交第公路勘察设计研究院有限公司 | Consider each salt marsh earth salt expansive force test device and usage to confined pressure |
| CN107632139B (en) * | 2017-10-17 | 2024-07-16 | 中交第一公路勘察设计研究院有限公司 | Saline soil salt expansion force testing device considering confining pressure in all directions and application method |
| CN109086511A (en) * | 2018-07-24 | 2018-12-25 | 中铁二院工程集团有限责任公司 | A kind of Coarse Saline embankment structure design method based on protuberance Deformation control |
| CN109086511B (en) * | 2018-07-24 | 2022-03-25 | 中铁二院工程集团有限责任公司 | Coarse-grained saline soil embankment structure design method based on uplift deformation control |
| CN110082191A (en) * | 2019-05-29 | 2019-08-02 | 海南大学 | A kind of model test soil case that novel confining pressure is controllable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180427 Effective date of abandoning: 20240716 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180427 Effective date of abandoning: 20240716 |