CN209311240U - A kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil - Google Patents
A kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil Download PDFInfo
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- CN209311240U CN209311240U CN201822142905.9U CN201822142905U CN209311240U CN 209311240 U CN209311240 U CN 209311240U CN 201822142905 U CN201822142905 U CN 201822142905U CN 209311240 U CN209311240 U CN 209311240U
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- soil
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Abstract
The utility model provides a kind of mating direct shear test device of the CT machine for the real-time shearing test of Rock And Soil, belongs to Rock And Soil shear strength test technical field.Including pressure-loaded part, sample loading station and device support section, pressure-loaded part includes servo motor, plunger, pressure sensor, hand jack and reinforced liner, sample loading station includes shearing box support, upper shear box, connecting column, lower shear box and rolling row, and device support section includes upper plate, column, nut and lower plate；Hand jack is connected to lower plate using reinforced liner, and hand jack is connect with pressure sensor；Servo motor is placed on the upside of upper plate and is connected with plunger, and oppositely positioned plunger is connected with pressure sensor.Shearing box support is fixed on upper plate, and rolling row is fixed on lower plate.The device can be during direct shear test, and the visualization of plane of fracture form and digitized representation, disclose the mesoscopic mechanisms of shear deformation breaks down during realization sample failure by shear.
Description
Technical field
The utility model relates to Rock And Soil shear strength test technical fields, particularly relate to one kind and cut in real time for Rock And Soil
Cut the mating direct shear test device of CT machine of test.
Background technique
Direct shear test is to measure the main method of sample shear strength, due to easy to operate, applied widely, wherein directly
It is most widely used during direct shear test to cut instrument.Test process can not be carried out using traditional direct shear test device accurate
Real-time monitoring, and utilization of CT Scanner during direct shear test, can get more accurate data and can be to test process
Carry out real-time monitoring.
The principle of industrial CT Scanner is: projecting on object and carries out rotary scanning for beam of x-rays, pass through object pair
The absorption (multiple projections) of X-ray obtains the substance distributed intelligence of interior of articles, by computer industrial CT Scanner spy
It surveys all directions ray relevant to space point in spatial dimension and carries out spatial algorithm, obtain and this X-ray absorption coefficient μ
The numerical value CTP of direct correlation, to form the μ digital picture of an amplitude object level.
Traditional straight shear device is excessively heavy, and quality is larger, not readily portable, and pressure apparatus is excessively complicated and inaccurate.
The upper and lower shear box of traditional straight shear device is cast by metal material, and support upper plate same as the column of lower plate is mostly gold
Belong to material structure.So traditional direct shear apparatus or direct shearing device are not applicable during Rock And Soil direct shear test
Real-time monitoring is carried out to it in CT Scanner, and there are the following problems:
According to the basic principle of industrial CT Scanner, the component of metal material can shelter from X-ray, and metal material penetrates X
The absorption of line will affect imaging effect, can generate artifact, and CT image can not comprehensively, completely reflect the entire shear history of material,
Influence the accuracy of damage mechanism analysis.There are aiming at the problem that with require, traditional straight shear device is transformed.
At present for the optimization and transformation of traditional straight shear device, be not the application for CT scan in direct shear test and
It optimizes and is transformed, for scanning result, mainly the column of metal material construction and shear box sweep industry CT
It is bigger to retouch machine influence.The sample real-time change process obtained when CT Scanner carries out real-time monitoring to test process is not can guarantee
It is whether accurate, straight shear device is transformed and is conducive to CT Scanner more accurately utilization in direct shear test.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of CT machine for the real-time shearing test of Rock And Soil is mating
Direct shear test device.
The device includes pressure-loaded part, sample loading station and device support section, and pressure-loaded part includes watching
Motor, plunger, pressure sensor, hand jack and reinforced liner are taken, sample loading station includes shearing box support, upper shearing
Box, connecting column, lower shear box and rolling row, device support section includes upper plate, column, nut and lower plate；Four columns are logical
It crosses nut and connect upper plate with lower plate, hand jack is connected to lower plate, hand jack and pressure using reinforced liner
Force snesor connection；Servo motor is placed on the upside of upper plate and is connected with plunger, and the plunger other end is connected with pressure sensor；
Shearing box support is fixed on upper plate, and the shearing box support other end connects upper shear box by connecting column, and upper shear box lower section is right
It should arrange that lower shear box, lower shear box are placed on rolling row, rolling row is fixed on lower plate.
Wherein, upper shear box and lower shear box are made of nylon glass fiber-reinforced resin.
Upper shear box can be up and down in shearing box support.
Rolling mining is fixed on lower plate with the thin cylindrical body for being easy to roll.
Column is made of nylon glass fiber-reinforced resin.
The above-mentioned technical proposal of the utility model has the beneficial effect that:
The device can scan it with industrial CT Scanner during direct shear test, realize sample failure by shear mistake
The visualization of plane of fracture form and digitized representation in journey, to disclose the mesoscopic mechanisms of shear deformation breaks down.It is hindered in straight shear device
The column and upper and lower shear box of the support upper plate and lower plate that hinder CT Scanner to scan are using nylon glass fiber-reinforced resin
(PA66+GF30) this new material.New material can bear biggish load, during CT scan not due to this material
The energy attenuation of X-ray can be kept less X-ray absorption, in order to carry out real-time monitoring, and energy to the sample during test
Reach ideal imaging effect.
Detailed description of the invention
Fig. 1 is the mating direct shear test apparatus structure signal of the CT machine for the real-time shearing test of Rock And Soil of the utility model
Figure；
Fig. 2 is the mating direct shear test device main view of CT machine for the real-time shearing test of Rock And Soil of the utility model；
Fig. 3 is the mating direct shear test device left view of CT machine for the real-time shearing test of Rock And Soil of the utility model.
Wherein: 1- servo motor；2- upper plate；3- column；4- shears box support；5- pressure sensor；The upper shear box of 6-；
Shear box under 7-；8- rolling row；9- lower plate；10- hand jack；11- nut；12- plunger；13- connecting column；14- reinforces branch
Frame.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model provides a kind of mating direct shear test device of the CT machine for the real-time shearing test of Rock And Soil.
As shown in Figure 1, Figure 2 and Figure 3, which includes pressure-loaded part, sample loading station and device support section；
Wherein, pressure-loaded part includes servo motor 1, plunger 12, pressure sensor 5, hand jack 10 and reinforces
Bracket 14, hand jack 10 are connected to lower plate 9 using reinforced liner 14, and hand jack 10 will provide horizontal shear force simultaneously
It is connect with pressure sensor 5；Servo motor 1 is placed on the upside of upper plate 2 be connected with plunger 12 normal stress is provided, it can be achieved that
Long-time pressure maintaining applies stressed size to the revolving speed of control servo motor 1 to control, makes the pressure of load can be more accurate,
Oppositely positioned plunger 12 is connected with pressure sensor 5.In this way so that experimentation carries out real time scan to shear surface, obtain
3-D image.
Sample loading station includes shearing box support 4, upper shear box 6, connecting column 13, lower shear box 7 and rolling row 8, shearing
Box support 4 is fixed on upper plate 2, and the other end will be connected by connecting column 13 with upper shear box 6, and upper and lower shear box uses Buddhist nun
This new material of imperial galss fiber reinforced resin (PA66+GF30) will weaken the absorption to X-ray, and upper shear box 6 can cut
Cut that box support 4 is up and down, in order to the handling of sample；Rolling row 8 is fixed on lower plate using the thin cylindrical body that can be easy to roll
9, lower shear box 7 is placed in rolling 8 rational positions of row during the experiment.
Device support section includes upper plate 2, column 3, nut 11 and lower plate 9, and four columns 3 will be upper by nut 11
Top plate 2 is connect with lower plate 9, and central post 3 uses new material nylon glass fiber-reinforced resin (PA66+GF30), upper top
Plate 2 and lower plate 9 can mainly give device to provide stability, other systems is given to provide support, guarantee device during the test
Stablize.
The device basic principle are as follows: during ground sample testing, whole device is put on CT machine turntable, carries out sample
Direct shear test, while x-ray source issues the X-ray of high-energy, high-energy X-ray penetrates shear box and sample, is connect by detector
Transmitted ray is received, to realize the high-precision real time scan in sample shear history.Rock And Soil sample occurs in shear history
Shearing brokenization not only can be clearly by high energy CT imaging system by being scanned using CT Scanner to sample failure mechanics
Real-time monitoring is carried out to sample change procedure and clear three-dimensional imaging can be obtained；And it is various in shearing test to obtain sample
Data.
The device concrete application process is as follows:
1. specimen enclosure.The Rock And Soil experiment sample formulated according to the size of shear box is correctly placed in lower shear box
In 7, and the lower shear box 7 with sample is placed in the correct position that rolling arranges 8, puts down the upper shearing on shearing box support 4
Box 6 checks the reasonability that sample is placed.
2. sample testing.Servo motor 1 is opened after after the completion of specimen enclosure, normal stress is provided, and is realized and is protected for a long time
Normal force biography, using pressure sensor 5, is placed in shear box, applied after everything in readiness by pressure after normal stress keeps stablizing
Add horizontal stress, by 10 loading level stress of hand jack, while opening Industrial CT Machine and Rock And Soil sample is carried out in real time
Scanning monitoring carries out CT scan to the regional scope at the zone of fracture and its upper and lower 5mm.
3. unloading sample.After completing test process, it is first shut off servo motor 1, withdraws hand jack 10, on rolling row
Lower shear box 7 is taken out, lifts shear box 6, and clear up shear box, the apperance before recovery device use.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (5)
1. a kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil, it is characterised in that: including pressure plus
Part, sample loading station and device support section are carried, pressure-loaded part includes servo motor (1), plunger (12), pressure biography
Sensor (5), hand jack (10) and reinforced liner (14), sample loading station include shearing box support (4), upper shear box
(6), connecting column (13), lower shear box (7) and rolling row (8), device support section includes upper plate (2), column (3), nut
(11) and lower plate (9)；Upper plate (2) is connect by four columns (3) by nut (11) with lower plate (9), hand jack
(10) it is connected to lower plate (9) using reinforced liner (14), hand jack (10) is connect with pressure sensor (5)；Servo electricity
Machine (1) is placed on the upside of upper plate (2) and is connected with plunger (12), and plunger (12) other end is connected with pressure sensor (5)；It cuts
Box support (4) to be cut to be fixed on upper plate (2), shearing box support (4) other end passes through shear box (6) in connecting column (13) connection,
Corresponding below upper shear box (6) to arrange lower shear box (7), lower shear box (7) is placed on rolling row (8), under rolling row (8) is fixed on
Bottom plate (9).
2. the CT machine mating direct shear test device according to claim 1 for the real-time shearing test of Rock And Soil, feature
Be: the upper shear box (6) and lower shear box (7) are made of nylon glass fiber-reinforced resin.
3. the CT machine mating direct shear test device according to claim 1 for the real-time shearing test of Rock And Soil, feature
Be: the upper shear box (6) can be up and down in shearing box support (4).
4. the CT machine mating direct shear test device according to claim 1 for the real-time shearing test of Rock And Soil, feature
Be: the rolling row (8) is fixed on lower plate (9) using the thin cylindrical body for being easy to roll.
5. the CT machine mating direct shear test device according to claim 1 for the real-time shearing test of Rock And Soil, feature
Be: the column (3) is made of nylon glass fiber-reinforced resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142905.9U CN209311240U (en) | 2018-12-19 | 2018-12-19 | A kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142905.9U CN209311240U (en) | 2018-12-19 | 2018-12-19 | A kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil |
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| Publication Number | Publication Date |
|---|---|
| CN209311240U true CN209311240U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822142905.9U Expired - Fee Related CN209311240U (en) | 2018-12-19 | 2018-12-19 | A kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459325A (en) * | 2018-12-19 | 2019-03-12 | 北京科技大学 | A kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil |
-
2018
- 2018-12-19 CN CN201822142905.9U patent/CN209311240U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459325A (en) * | 2018-12-19 | 2019-03-12 | 北京科技大学 | A kind of mating direct shear test device of CT machine for the real-time shearing test of Rock And Soil |
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| 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: 20190827 Termination date: 20201219 |