CN202522480U - Stress path-based soil body disturbance test device - Google Patents
Stress path-based soil body disturbance test device Download PDFInfo
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- CN202522480U CN202522480U CN2012201223431U CN201220122343U CN202522480U CN 202522480 U CN202522480 U CN 202522480U CN 2012201223431 U CN2012201223431 U CN 2012201223431U CN 201220122343 U CN201220122343 U CN 201220122343U CN 202522480 U CN202522480 U CN 202522480U
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- pressure
- pressure chamber
- soil body
- volume controller
- stress path
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Abstract
The utility model relates to a stress path-based soil body disturbance test device. The device comprises a pressurization system, an acquisition system, an industrial control computer and a pressure chamber, wherein the pressurization system comprises four pressure/volume controllers which are respectively used for providing a confining pressure, axial force, a water body counter pressure and a gas counter pressure; the four pressure/volume controllers are all connected with the pressure chamber; the acquisition system comprises a data acquisition board and a sensor group, wherein the data acquisition board is connected with the sensor group and the industrial control computer; and the sensor group and a soil body test piece to be tested are arranged in the pressure chamber together. Compared with the prior art, the stress path-based soil body disturbance test device has the advantages that the confining pressure, the axial force, the water body counter pressure and the gas counter pressure in the pressure chamber are controlled precisely by using the four pressure/volume controllers, the soil body disturbance under actual working conditions can be simulated effectively, and the accurate experimental results can be obtained.
Description
Technical field
The utility model relates to a kind of soil disturbance test unit, especially relates to a kind of soil disturbance test unit based on stress path.
Background technology
Soil body unit under the engineering state when experience external condition or load action, all will experience the variation of stress state and strain regime.Modern age, the development of soil nature research and non-linear soil mechanics showed; The mechanical property of soil not only depends on stress level and the stress state that the soil body is initial and final; And historical relevant with the mode of stress and strain state variation and stress (strain) before this, the research of non-linear stress～strain stress relation then requires people to pay attention to the state of development of this change procedure.Stress path (or strain paths) is exactly a kind of description to this historical process, and it refers to externally under the load action, the track of variation in stress (strain) space (or coordinate system) of the stress of certain point (strain) state in the soil.In order to study the influence of disturbance, need carry out the soil disturbance test, thereby set up the evaluation index that the soil body receives disturbance soil body stress state and void ratio etc.
The utility model content
The purpose of the utility model is exactly to provide a kind of accuracy of detection the high soil disturbance test unit based on stress path for the defective that overcomes above-mentioned prior art existence.
The purpose of the utility model can realize through following technical scheme:
A kind of soil disturbance test unit based on stress path; Comprise compression system, acquisition system, industrial computer and pressure chamber; Described compression system comprises and is respectively applied for quadruplet pressure/volume controller that confined pressure, axle power, water body back-pressure and gas back-pressure are provided; Described quadruplet pressure/volume controller all connects the pressure chamber; Described acquisition system comprises data acquisition board and sensor groups, and described data acquisition board is connected with industrial computer with sensor groups respectively, and described sensor groups is located in the pressure chamber with soil body sample to be measured.
Being used to the pressure/volume controller of confined pressure, axle power, water body back-pressure is provided is pressure/volume controller of 3MPa/200cc, and the pressure/volume controller that is used to provide the gas back-pressure is pressure/volume controller of 2MPa/1000cc.
The greatest axis power of described pressure chamber is 7kN, and maximum confined pressure is 1700kPa.
Be provided with the hydrostatic column that is used to place soil body sample in the described pressure chamber.
Compared with prior art; The utility model can accurately be controlled the confined pressure in the pressure chamber, axle power, water body back-pressure and gas back-pressure respectively through quadruplet pressure/volume controller; Can effectively simulate the soil disturbance under the actual condition, obtain accurate more experimental result.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of soil disturbance test unit based on stress path comprises compression system 1, acquisition system, industrial computer 3 and pressure chamber 4.Compression system 1 comprises and is respectively applied for quadruplet pressure/volume controller that confined pressure, axle power, water body back-pressure and gas back-pressure are provided; Wherein, Being used to the pressure/volume controller of confined pressure, axle power, water body back-pressure is provided is pressure/volume controller of 3MPa/200cc, is pressure/volume controller of 2MPa/1000cc and be used to provide the pressure/volume controller of gas back-pressure.Quadruplet pressure/volume controller all connects pressure chamber 4, and acquisition system comprises data acquisition board 21 and sensor groups 22, and data acquisition board 21 is connected with industrial computer 3 with sensor groups 22 respectively.The greatest axis power of pressure chamber is 7kN, and maximum confined pressure is 1700kPa and is provided with the hydrostatic column that is used to place soil body sample that sensor groups 22 is placed in pressure chamber 4 with soil body sample to be measured.The utility model can accurately be controlled the confined pressure in the pressure chamber, axle power, water body back-pressure and gas back-pressure respectively through quadruplet pressure/volume controller, can effectively simulate the soil disturbance under the actual condition, obtains accurate more experimental result.
Claims (4)
1. soil disturbance test unit based on stress path; It is characterized in that; Comprise compression system, acquisition system, industrial computer and pressure chamber; Described compression system comprises and is respectively applied for quadruplet pressure/volume controller that confined pressure, axle power, water body back-pressure and gas back-pressure are provided, and described quadruplet pressure/volume controller all connects the pressure chamber, and described acquisition system comprises data acquisition board and sensor groups; Described data acquisition board is connected with industrial computer with sensor groups respectively, and described sensor groups is located in the pressure chamber with soil body sample to be measured.
2. a kind of soil disturbance test unit according to claim 1 based on stress path; It is characterized in that; Being used to the pressure/volume controller of confined pressure, axle power, water body back-pressure is provided is pressure/volume controller of 3MPa/200cc, and the pressure/volume controller that is used to provide the gas back-pressure is pressure/volume controller of 2MPa/1000cc.
3. a kind of soil disturbance test unit based on stress path according to claim 1 is characterized in that the greatest axis power of described pressure chamber is 7kN, and maximum confined pressure is 1700kPa.
4. a kind of soil disturbance test unit based on stress path according to claim 1 is characterized in that, is provided with the hydrostatic column that is used to place soil body sample in the described pressure chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201223431U CN202522480U (en) | 2012-03-27 | 2012-03-27 | Stress path-based soil body disturbance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201223431U CN202522480U (en) | 2012-03-27 | 2012-03-27 | Stress path-based soil body disturbance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202522480U true CN202522480U (en) | 2012-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201223431U Expired - Lifetime CN202522480U (en) | 2012-03-27 | 2012-03-27 | Stress path-based soil body disturbance test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202522480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665150A (en) * | 2020-04-26 | 2020-09-15 | 成都理工大学 | Single click energy-fixed soil sample disturbance test device |
-
2012
- 2012-03-27 CN CN2012201223431U patent/CN202522480U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665150A (en) * | 2020-04-26 | 2020-09-15 | 成都理工大学 | Single click energy-fixed soil sample disturbance test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |