CN206161428U - Triaxial soil sample axial deformation measuring device - Google Patents
Triaxial soil sample axial deformation measuring device Download PDFInfo
- Publication number
- CN206161428U CN206161428U CN201621216327.3U CN201621216327U CN206161428U CN 206161428 U CN206161428 U CN 206161428U CN 201621216327 U CN201621216327 U CN 201621216327U CN 206161428 U CN206161428 U CN 206161428U
- Authority
- CN
- China
- Prior art keywords
- soil sample
- base
- axial
- top cap
- pressure head
- 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.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a triaxial soil sample axial deformation measuring device, including the triaxial cell, a pedestal, the axial pressure rod, the pressure head, the soil sample, hood and LVDT sensor, the base is fixed in bottom central authorities in the triaxial cell, the soil sample is arranged in the base central authorities through the permeable stone, through surface contact in permeable stone and the soil sample bottom the pressure head, the axial pressure rod passes the top center of triaxial cell, and axial pressure rod and triaxial cell top clearance fit, hood bottom central authorities are fixed in at the pressure head top, the holistic longitudinal section of pressure head and hood is the T type, the LVDT sensor is vertical to be installed between base and hood, LVDT the sensor housing is fixed in on the base, the measuring stick and the hood contact of LVDT sensor, the lower extreme of axial pressure rod is connected with the hood is central. The device simple structure, convenient to use, it is accurate to the axial strain measurement of soil sample.
Description
Technical field
The utility model is related to earthwork test Instrument technical field, and in particular to a kind of three axles soil sample axial deformation measurement dress
Put.
Background technology
The axial strain of soil sample in soil test typically becomes sensor to measure by outside axle.However, actual conditions
Under, soil sample axle becomes to be affected by several factors, therefore externally measured axial strain has problems.For example, in different pressures
Whether axial pressure rod contacts in place between top cap under power, and the material such as base can deform, and cause uncertain increase,
So that causing the axial strain deviation for calculating bigger than normal.The sometimes change of temperature can also affect the measurement of axial strain.Additionally,
The specific metering system of soil sample axial strain is not prescribed by earthwork test rule, this is given in soil test, soil body axial strain
Measurement bring difficulty.
The content of the invention
To solve the problems, such as above-mentioned prior art, the utility model is measured there is provided a kind of three axles soil sample axial deformation
Device, the apparatus structure is simple, easy to use, and the axial strain measurement to soil sample is accurate.
A kind of three axle soil sample axial deformation measurement apparatus, including triaxial cell, base, axial pressure bar, pressure head, soil
Sample, top cap and LVDT sensors, base is fixed on inner bottom part central authorities of triaxial cell, and soil sample is placed in base central authorities by permeable stone
On, by permeable stone and soil sample upper surface, axial pressure bar passes through triaxial cell's center of top, and axial direction for pressure head bottom
Pressure rod coordinates with triaxial cell top clearance, and the vertical of top cap bottom center, pressure head and top cap entirety is fixed at pressure head top
Section is T-shaped, and LVDT sensors are vertically arranged between base and top cap, and LVDT sensor outer housings are fixed on base, LVDT
The measurement bar of sensor is contacted with top cap, and the lower end of axial pressure bar is connected with top cap central authorities.
Described top cap is in the form of annular discs, and top cap is integral type structure with pressure head.
Compared with prior art, advantage of the present utility model and effective effect are：
The device realizes the axial direction change for accurately measuring soil sample by increasing LVDT sensors between base and top cap
Shape, it is to avoid base is with the impact deformed under temperature, pressure change.
Description of the drawings
Fig. 1 is the structural representation of three axles soil sample axial deformation measurement apparatus of the present utility model.
Wherein, 1- triaxial cells, 2- bases, 3- axial pressure bars, 4- pressure heads, 5- soil samples, 6- top caps, 7-LVDT sensings
Device.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings.
The structure of the three axle soil sample axial deformation measurement apparatus that the utility model is provided is as shown in figure 1, the device includes three
Axle balancing gate pit 1, base 2, axial pressure bar 3, pressure head 4, soil sample 5, top cap 6 and LVDT sensors 7.
Base 2 is fixed on inner bottom part central authorities of triaxial cell 1, and soil sample 5 is placed on base 2 by permeable stone.
Top cap 6 is in the form of annular discs, and top is fixed in the bottom of pressure head 4 by permeable stone and the upper surface of soil sample 5, the top of pressure head 4
The bottom center of cap 6.Top cap 6 is T-shaped for the longitudinal section of integral type structure, pressure head 4 and the entirety of top cap 6 with pressure head 4.
Axial pressure bar 3 passes through the center of top of triaxial cell 1, and axial pressure bar 3 and the top clearance of triaxial cell 1
Coordinate, the lower end of axial pressure bar 3 is connected with the central authorities of top cap 6.
LVDT sensors 7 are vertically arranged between base 2 and top cap 6, and the shell of LVDT sensors 7 is fixed on base 2,
The measurement bar of LVDT sensors 7 is contacted with the lower surface of top cap 6.
Claims (2)
1. a kind of three axles soil sample axial deformation measurement apparatus, including triaxial cell, base, axial pressure bar, pressure head and soil sample,
Base is fixed on triaxial cell inner bottom part central authorities, and soil sample is placed on base by permeable stone, pressure head bottom by permeable stone with
Soil sample upper surface, axial pressure bar passes through triaxial cell's center of top, and axial pressure bar and triaxial cell top
Gap coordinates, it is characterised in that：Also include top cap and LVDT sensors, top cap bottom center is fixed at pressure head top, pressure head and
The overall longitudinal section of top cap is T-shaped, and LVDT sensors are vertically arranged between base and top cap, and LVDT sensor outer housings are fixed on
On base, the measurement bar of LVDT sensors is contacted with top cap, and the lower end of axial pressure bar is connected with top cap central authorities.
2. three axles soil sample axial deformation measurement apparatus according to claim 1, it is characterised in that：Described top cap is in disk
Shape, top cap is integral type structure with pressure head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216327.3U CN206161428U (en) | 2016-11-09 | 2016-11-09 | Triaxial soil sample axial deformation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216327.3U CN206161428U (en) | 2016-11-09 | 2016-11-09 | Triaxial soil sample axial deformation measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206161428U true CN206161428U (en) | 2017-05-10 |
Family
ID=58659633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621216327.3U Expired - Fee Related CN206161428U (en) | 2016-11-09 | 2016-11-09 | Triaxial soil sample axial deformation measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206161428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646292A (en) * | 2019-09-29 | 2020-01-03 | 东北大学 | Brazil disc splitting test device and method under simulated hydrostatic pressure condition |
-
2016
- 2016-11-09 CN CN201621216327.3U patent/CN206161428U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646292A (en) * | 2019-09-29 | 2020-01-03 | 东北大学 | Brazil disc splitting test device and method under simulated hydrostatic pressure condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20211109 |