CN206270182U - A kind of building triaxial apparatus with there-dimensional laser scanning device - Google Patents
A kind of building triaxial apparatus with there-dimensional laser scanning device Download PDFInfo
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- CN206270182U CN206270182U CN201621431831.5U CN201621431831U CN206270182U CN 206270182 U CN206270182 U CN 206270182U CN 201621431831 U CN201621431831 U CN 201621431831U CN 206270182 U CN206270182 U CN 206270182U
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Abstract
The utility model discloses a kind of building triaxial apparatus with there-dimensional laser scanning device, including balancing gate pit, top board, base plate, base, top cap, 3 D laser scanning probe, support, track, automatic slide rail device, two-way valve, pore water pressure sensor, pressure controller a, steam vent, plug, pressure controller b and data acquisition unit；The periphery of the balancing gate pit is the cover lid of annular, and the suitable for reading of cover lid is provided with top board, and the lower mouth for covering lid is provided with base plate；On top board, the inwall of steam vent is provided with screw thread to the steam vent, and plug is fixed at steam vent.The utility model monitors the deformation of soil sample in triaxial test using three-dimensional laser scanning technique, with measuring accuracy typical advantages high, and in test process, digitlization will be a little realized on sample, the local deformation of sample and the forming process of shear band can accordingly be analyzed, it is also possible to the failure evolvement process of numerical simulation analysis sample is carried out based on this data.
Description
Technical field
The utility model is related to a kind of building triaxial apparatus, more particularly to a kind of building three with there-dimensional laser scanning device
Axle instrument, belongs to laboratory apparatus technical field.
Background technology
In geotechnical centrifuge model, the destructive process and ground of radial deformation and Volume Changes for understanding sample of sample
This structure of body calculates most important.Volume of sample change in accurate test triaxial test be important step in triaxial test it
One.
The technical method that the change of soil body body is tested in current triaxial test mainly has drainage and endless chain type sensor.Draining
The Volume Changes of soil sample are mainly based upon the Volume Changes of shear history sample in method test triaxial test can cause around sample
The change of degassing water volume reflects that the sensor requirements that degassing water volume change around sample is weighed in the method are higher.If
Air water discharge of going around sample then shows that sample there occurs dilative shear failure；The air water that goes around sample enters table if balancing gate pit
Bright sample there occurs cuts contracting destruction.The body that the method is tested becomes data can directly reflect the Volume Changes of sample, it is not necessary to
Further Conversion Analysis.
If endless chain type sensor main test sample radial direction change in displacement in shear history, changed by radial displacement
Data combine axial change in displacement and calculate Volume Changes of the sample in shear history.Body change test is divided into two parts by the method
Tested, i.e. axial deformation and radial deformation two parts.Because the range of radial displacement transducer is limited, and in triaxial test
The radial deformation of sample shows obvious otherness in the different parts of sample, use in this way in triaxial test
Scope is relatively limited.The change of test sample body is still drainage test sample using more method in triaxial test at present
Volume Changes.
Also there is scholar that the accurate test of sample body change in triaxial test is realized by digital picture e measurement technology[1-3], the skill
Art mainly continuously to sample take pictures and realizes the deformation monitoring of sample by CCD camera.
In recent years, laser measuring technology application is quite varied, such as laser interference length-measuring, laser ranging, vibration measurement with laser, laser
Test the speed, laser speckle measurement, laser alignment, laser hologram, laser scanning, laser tracking, laser spectral analysis etc. all show
The huge superiority of laser measurement.Laser heterodyne interference is the important technology of nano measurement.Laser measurement is a kind of contactless
Measurement, the motion of testee is not influenceed, and high precision, measurement range are big, detection time is short, with spatial resolution very high.
As three-dimensional laser scanning technique is in the continuous popularization in Geotechnical Engineering field, its application in the test of Geotechnical Engineering laboratory test
Also there is boundless prospect.
Utility model content
The utility model purpose is to provide a kind of building triaxial apparatus with there-dimensional laser scanning device, is swashed using three-dimensional
The deformation of soil sample, greatly improves measuring accuracy in optical scanning technical monitoring triaxial test, to solve to cause in the prior art
Drawbacks described above.
In order to solve the above-mentioned technical problem, the utility model provides following technical scheme：
A kind of building triaxial apparatus with there-dimensional laser scanning device, including balancing gate pit, top board, base plate, base, top cap,
3 D laser scanning probe, support, track, automatic slide rail device, two-way valve, pore water pressure sensor, pressure controller a,
Steam vent, plug, pressure controller b and data acquisition unit；The periphery of the balancing gate pit is the cover lid of annular, covers the peace suitable for reading of lid
Equipped with top board, the lower mouth for covering lid is provided with base plate；On top board, the inwall of steam vent is provided with screw thread to the steam vent, blocks up
Head is fixed at steam vent, and sealing gasket is provided between plug and steam vent；The base is fixed in plate upper surface
At the heart, top cap is fixed on the upper end of base；The track is circular configuration, and track is fixed on the base plate upper table of base surrounding
Face；The automatic slide rail device installs in orbit, and automatic slide rail device can rotate a circle along track；The support is fixed on certainly
The upper end of dynamic slide rail device, 3 D laser scanning probe is fixed on the top of support, and 3 D laser scanning probe by wire with
Data acquisition unit is connected；One end of the pressure controller a is connected by pipeline with top cap, and the other end is adopted by wire with data
Storage is connected；One end of the pore water pressure sensor is connected by pipeline with base, and the other end is adopted by wire with data
Storage is connected, and two-way valve is provided with pipeline between pore water pressure sensor and base, and pressure controller b is by pipe
Road is connected with balancing gate pit.
As a kind of optimal technical scheme of the present utility model, the data acquisition unit be data acquisition board, desktop computer,
Notebook computer or panel computer one kind therein.
Used as a kind of optimal technical scheme of the present utility model, the cover lid uses water white transparency material.
Used as a kind of optimal technical scheme of the present utility model, the plug is hexagon socket countersunk flat cap head screw.
Beneficial effect：Compared with conventional art, a kind of building three with there-dimensional laser scanning device of the present utility model
Axle instrument structure is novel, and design science is reasonable；Using the deformation of soil sample in three-dimensional laser scanning technique monitoring triaxial test, with survey
The typical advantages of high precision are tried, and in test process, digitlization will be a little realized on sample, can accordingly analyze examination
The local deformation of sample and the forming process of shear band, it is also possible to which the destruction for carrying out numerical simulation analysis sample based on this data is drilled
Change process；Three-dimensional laser scanning technique can simultaneously reflect overall volume change and the local deformation feelings of soil sample in triaxial test
Condition.
Brief description of the drawings
Fig. 1 is a kind of overall construction drawing of building triaxial apparatus with there-dimensional laser scanning device of the present utility model；
Fig. 2 is that a kind of track installation of building triaxial apparatus with there-dimensional laser scanning device of the present utility model is illustrated
Figure；
Wherein：1- balancing gate pits, 2- top boards, 3- base plates, 4- bases, 5- top caps, 6- 3 D laser scannings probe, 7- supports,
The automatic slide rail device of 8- tracks, 9-, 10- two-ways valve, 11- pore water pressure sensors, 12- pressure controller a, 13- steam vent,
14- plugs, 15- pressure controller b, 16- data acquisition unit, 17- covers lid, 18- samples.
Specific embodiment
For technological means, creation characteristic, reached purpose and effect for realizing the utility model are easy to understand, below
With reference to specific embodiment, the utility model is expanded on further.
As Figure 1-Figure 2, a kind of building triaxial apparatus with there-dimensional laser scanning device, including balancing gate pit 1, top board 2,
Base plate 3, base 4, top cap 5,3 D laser scanning probe 6, support 7, track 8, automatic slide rail device 9, two-way valve 10, pore water
Pressure sensor 11, pressure controller a12, steam vent 13, plug 14, pressure controller b15 and data acquisition unit 16；The pressure
The periphery of power room 1 is the cover lid 17 of annular, and the suitable for reading of cover lid 17 is provided with top board 2, and the lower mouth of cover lid 17 is provided with base plate 3；Institute
Steam vent 13 is stated on top board 2, the inwall of steam vent 13 is provided with screw thread, and plug 14 is fixed at steam vent 13, and plug
Sealing gasket is installed between 14 and steam vent 13；The base 4 is fixed on the center of the upper surface of base plate 3, and top cap 5 is fixed on bottom
The upper end of seat 4；The track 8 is circular configuration, and track 8 is fixed on the upper surface of base plate 3 of the surrounding of base 4；The automatic cunning
Rail device 9 is arranged on track 8, and automatic slide rail device 9 can rotate a circle along track 8；The support 7 is fixed on automatic slide rail device
9 upper end, 3 D laser scanning probe 6 is fixed on the top of support 7, and 3 D laser scanning probe 6 passes through wire and data
Collector 16 is connected；One end of the pressure controller a12 is connected by pipeline with top cap 5, and the other end passes through wire and data
Collector 16 is connected；One end of the pore water pressure sensor 11 is connected by pipeline with base 4, the other end by wire with
Data acquisition unit 16 is connected, and is provided with two-way valve 10, pressure on pipeline between pore water pressure sensor 11 and base 4
Controller b15 is connected by pipeline with balancing gate pit 1.
Wherein, the data acquisition unit 16 is that data acquisition board, desktop computer, notebook computer or panel computer are therein
It is a kind of.
Wherein, the cover lid 17 uses water white transparency material.
Wherein, the plug 14 is hexagon socket countersunk flat cap head screw.
Before experiment, it is necessary first to whether rationally to check the working condition of each sensor, based on this, tried in strict accordance with geotechnique
Successively completion instrument must be vented and reset work to test specification, and preparation starts experiment after installing sample 18；Sample 18 is installed to terminate
Standard point must be set around sample 18 afterwards, must ensure in standard point setting up procedure a position reasonability and firmly
Property, and open 3 D laser scanning probe 6, check probe whether normal work, inspection terminate after by computer levelling three
Standard point above dimension laser scanning probe 6, and sample 18 completes calibration operation.
During experiment, 3 D laser scanning probe 6 is kept to be in monitoring state, early stage monitoring can set relatively low monitoring frequently
Rate, Volume Changes and local deformation of the monitoring sample 18 in saturation and consolidation process, in shear history, can be by calculating
Machine sets the monitoring frequency increased to sample 18, and now the 3 D laser scanning probe 6 above track 8 is in and is supervised with high-speed motion
In survey, ensure to realize comprehensive scanning to soil sample with this；3 D laser scanning probe 6 is connected by data wire with computer, is counted
Calculation machine realizes that sample 18 deforms Real Time Monitoring based on analysis software；What three-dimensional laser scanning technique can deform sample 18
Point all digitlizations, can be based on the three-dimensional point carries out the numerical simulation analysis of the deformation of sample 18.
In addition the safe distance in balancing gate pit 1 between 3 D laser scanning probe 6 and sample 18 is important set of the invention
Into part；Track 8 is slided in balancing gate pit 1 to be needed to ensure that it has lubricity good enough, due to the not row of use in the technology
The Volume Changes of water law test sample 18, so in the absence of air water is removed in balancing gate pit 1, water will not be to 3 D laser scanning probe 6
Normal work is impacted.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Claims (4)
1. a kind of building triaxial apparatus with there-dimensional laser scanning device, including balancing gate pit, top board, base plate, base, top cap, three
Dimension laser scanning probe, support, track, automatic slide rail device, two-way valve, pore water pressure sensor, pressure controller a, row
Stomata, plug, pressure controller b and data acquisition unit；It is characterized in that：The periphery of the balancing gate pit is the cover lid of annular, cover
The suitable for reading of lid is provided with top board, and the lower mouth for covering lid is provided with base plate；The steam vent sets on top board on the inwall of steam vent
There is screw thread, plug is fixed at steam vent, and sealing gasket is installed between plug and steam vent；The base is fixed on base plate
The center on surface, top cap is fixed on the upper end of base；The track is circular configuration, and track is fixed on the bottom of base surrounding
Plate upper surface；The automatic slide rail device installs in orbit, and automatic slide rail device can rotate a circle along track；The support is consolidated
The upper end of automatic slide rail device is scheduled on, 3 D laser scanning probe is fixed on the top of support, and 3 D laser scanning probe passes through
Wire is connected with data acquisition unit；One end of the pressure controller a is connected by pipeline with top cap, the other end by wire with
Data acquisition unit is connected；One end of the pore water pressure sensor is connected by pipeline with base, the other end by wire with
Data acquisition unit is connected, and is provided with two-way valve, pressure controller b on pipeline between pore water pressure sensor and base
It is connected with balancing gate pit by pipeline.
2. a kind of building triaxial apparatus with there-dimensional laser scanning device according to claim 1, it is characterised in that：It is described
Data acquisition unit is data acquisition board, desktop computer, notebook computer or panel computer one kind therein.
3. a kind of building triaxial apparatus with there-dimensional laser scanning device according to claim 1, it is characterised in that：It is described
Cover lid uses water white transparency material.
4. a kind of building triaxial apparatus with there-dimensional laser scanning device according to claim 1, it is characterised in that：It is described
Plug is hexagon socket countersunk flat cap head screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621431831.5U CN206270182U (en) | 2016-12-26 | 2016-12-26 | A kind of building triaxial apparatus with there-dimensional laser scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621431831.5U CN206270182U (en) | 2016-12-26 | 2016-12-26 | A kind of building triaxial apparatus with there-dimensional laser scanning device |
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| CN206270182U true CN206270182U (en) | 2017-06-20 |
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| CN201621431831.5U Active CN206270182U (en) | 2016-12-26 | 2016-12-26 | A kind of building triaxial apparatus with there-dimensional laser scanning device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831070A (en) * | 2017-12-04 | 2018-03-23 | 长沙理工大学 | A kind of compression shear test device of composite pavement structure intensity and fatigue |
| CN112525094A (en) * | 2020-11-24 | 2021-03-19 | 山东大学 | Three-dimensional deformation detection device for triaxial test sample and use method thereof |
| CN112710549A (en) * | 2020-12-15 | 2021-04-27 | 西南交通大学 | Non-contact type rock-soil triaxial test piece body strain testing device |
| CN116609194A (en) * | 2023-04-03 | 2023-08-18 | 深圳大学 | Triaxial test device for three-dimensional reconstruction of real-time sample and control method thereof |
-
2016
- 2016-12-26 CN CN201621431831.5U patent/CN206270182U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831070A (en) * | 2017-12-04 | 2018-03-23 | 长沙理工大学 | A kind of compression shear test device of composite pavement structure intensity and fatigue |
| CN107831070B (en) * | 2017-12-04 | 2024-04-09 | 长沙理工大学 | Compression shear testing device for structural strength and fatigue of composite pavement |
| CN112525094A (en) * | 2020-11-24 | 2021-03-19 | 山东大学 | Three-dimensional deformation detection device for triaxial test sample and use method thereof |
| CN112710549A (en) * | 2020-12-15 | 2021-04-27 | 西南交通大学 | Non-contact type rock-soil triaxial test piece body strain testing device |
| CN116609194A (en) * | 2023-04-03 | 2023-08-18 | 深圳大学 | Triaxial test device for three-dimensional reconstruction of real-time sample and control method thereof |
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