CN108918284A - A kind of visualization true triaxial experimental provision - Google Patents
A kind of visualization true triaxial experimental provision Download PDFInfo
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- CN108918284A CN108918284A CN201810825799.6A CN201810825799A CN108918284A CN 108918284 A CN108918284 A CN 108918284A CN 201810825799 A CN201810825799 A CN 201810825799A CN 108918284 A CN108918284 A CN 108918284A
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- 238000012800 visualization Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 89
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009432 framing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000002474 experimental method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of visualization true triaxial experimental provision, including pedestal, loading frame, test specimen box and six servo action devices, test specimen box include box body, self-centering platen, centering cushion block, last item, transparent briquetting and extensometer；Self-centering platen is set on six faces of box body, and the output shaft of six servo action devices is connected on corresponding self-centering platen；The side of self-centering platen is equipped with connecting bracket, and the both ends of extensometer are separately fixed in the connecting bracket of two opposite self-centering platens；Self-centering platen is equipped with centering cushion block towards the side of box body, for preventing self-centering platen from rotating；One end of last item is connect with self-centering platen, and the other end of last item passes through box body and connect with transparent briquetting, and transparent briquetting is equipped with video camera and installs hole, and video camera, which is installed, is equipped with video camera in hole.It can carry out the load of six face of three-dimensional to test specimen, while can observe and record in real time the deformation process of test specimen, easy to operate, economical and practical, easy to spread.
Description
Technical field
The present invention relates to the measuring technologies of rock mechanics, and in particular to a kind of visualization true triaxial experimental provision.
Background technique
With the development of science and technology and economic technology, the Material Mechanics Problems being related to increasingly diversification, this just forces us
Further improve and develop the measuring technology of material.True triaxial test machine have been widely used for geotechnical engineering, new material,
The fields such as matter Disaster Study and application.Meanwhile rock test rig develops also at a hot spot of current research from experimental study
From the point of view of, rock test rig will be to CT scan, triaxial machining seepage flow, three axis emulation test systems and true triaxial test system in situ
The trend that direction is developed.So material three-shaft testing machine research object for being also the most important thing is especially led in geotechnical engineering
Domain, rock triaxial test machine carry stability of slope, tunnel (tunnel) country rock maintenance, bump, earthquake sheet etc.
The important task of research and engineer application.
Traditional true triaxial test machine has been widely applied, but still has some shortcomings：1, using closed container into
The experiment of row "black box", is adding the situation of change in uninstall process that can not or be difficult to intuitively be observed and ground material
Study carefully, especially to Seepage Experiment when state of the fluid in test specimen is difficult to observe；2, test specimen cushion block mostly uses alloy or hard
Steel plate is heavy and be not transparent material, be unfavorable for the direct observation of test specimen and study；3, the load of confining pressure needs to use liquid
It substitutes, defines 2=σ of σ 3, true stress state cannot be simulated, it is complicated for operation, it is easy to happen leakage, is also unfavorable for seepage flow
The progress of experiment.Therefore, traditional true triaxial equipment can not in terms of intuitive observation and the deformation of record test specimen or flow event
Meet existing experiment demand.
Novel true triaxial means of testing, such as CN107219122A, CN107091780A, CN105842343A use sound
Transmitting cooperation true triaxial is tested, but the probe of sound emission is fragile and is easy by extraneous interference；Such as
CN107228800A, CN206593980U, CN207020004U are tested using fiber grating or light-sensitive material, this
Kind experimental method is complicated, and condition is harsh；It, but can only be to examination if CN206420717U is tested using scanner cooperation true triaxial
Four faces of part are scanned and can only observe the surface of test specimen；As CN106501090A using three-dimensional laser cooperate true triaxial into
Row experiment, but can only be scanned after the completion of three axis loading experiments, the dynamic changing process of test specimen can not be observed；Such as
CN105181471B is tested using CT cooperation true triaxial, but the cost of CT is very high, and service life is short, has radiation to human body,
It must be tested in special test site, it is complicated for operation；As CN103257072A cooperates true triaxial using linear laser
It is tested, but the side of test specimen can only be observed, operation difficulty is big, and price is high；As CN101968348B uses room temperature
Curing type fluent material is tested as fracturing fluid, but is still needed to split test specimen after having tested and be observed, cannot
Carry out dynamic observation；Or the spread scenarios in crack are marked using tracer, it is observed it also requires test specimen is splitted,
Dynamic observation is not can be carried out.Generally speaking these technical solutions not can be carried out dynamic observation largely, or operates and make
With condition harshness, appointing to the acquisition of experimental data is so a kind of indirectly acquisition, cannot be carried out during triaxial tests intuitive
Observation.
True triaxial means of testing is visualized, if CN104007250A substitutes partial pressure chamber using acrylic glass, such as
CN104596861B uses transparent pressure room, but part of data acquisition is using camera or video camera and camera part is in external number
It is not high according to acquisition precision, the independent loads of three axis are not carried out, all faces of test specimen cannot be observed；Such as
CN104749025A disposes a visual window in Pressure chamber side, but the acquisition of data is carried out without cooperation other equipment；Such as
CN106198243A carries out triaxial tests using visual window collocation digital camera, but can only observe two faces.Generally these skills
The camera or video camera that art scheme uses are all in the outside of true triaxial, and the precision of experimental data is insufficient, simultaneously because visual window
Presence, cause experimental provision intensity inadequate, carry out triaxial tests when not can be carried out too high pressure.Therefore, it is necessary to develop one
Kind can observe the visualization true triaxial experimental provision of triaxial tests process in real time.
Summary of the invention
The object of the present invention is to provide a kind of visualization true triaxial experimental provisions, can carry out six face of three-dimensional to test specimen and add
It carries, while can observe and record in real time the deformation process of test specimen, it is easy to operate, it is economical and practical, it is easy to spread.
Visualization true triaxial experimental provision of the present invention, including pedestal, loading frame, test specimen box and six servos are dynamic
Make device, the loading frame is set on pedestal, and test specimen box is set in loading frame, and six servo action devices are set to loading frame
On, the load perpendicular to surface of test piece is provided for the test specimen into test specimen box；The test specimen box includes box body, self-centering pressure
Disk, centering cushion block, last item, transparent briquetting and extensometer；The box body is encircled into cuboid by left cover body, right cover body and side wall
Or cube structure, the quantity of the self-centering platen is six, on six faces of box body, six servo action devices it is defeated
Shaft is connected on corresponding self-centering platen；The side of the self-centering platen be equipped with connecting bracket, the two of extensometer
End is separately fixed in the connecting bracket of two opposite self-centering platens；Self-centering platen is equipped with centering towards the side of box body
Cushion block, for preventing self-centering platen from rotating；One end of the last item is connect with self-centering platen, and the other end of last item passes through box
Body is connect with transparent briquetting, and the transparent briquetting is used to be pressed in a face of test specimen；The transparent briquetting is equipped with video camera
Hole is installed, video camera, which is installed, is equipped with video camera in hole.
Further, the loading frame includes longitudinal framing and axial frame；The longitudinal framing is fixed on the drive of pedestal
In dynamic system, including left crossbeam, right crossbeam and connecting column, the connecting column both ends are fixed with left crossbeam and right crossbeam respectively to be connected
It connects, connecting column is equipped with the fixture for fixing test specimen box；The axial direction frame is fixed on pedestal, is set to left crossbeam and right cross
Between beam, rectangular-ambulatory-plane structure is constituted by two transverse frames and two vertical frames；Six servo action devices are respectively arranged at a left side
On crossbeam, right crossbeam, two transverse frames and two vertical frames.
Further, the drive system includes sliding rail, sliding block, positional cylinder and oil cylinder；The sliding rail is set in left-right direction
In on pedestal, the sliding rail is equipped with sliding block, and the sliding block is mobile by oil cylinder drives edge sliding rail, slides into behind designated position by fixed
Position oil cylinder locking is fixed, and the left crossbeam and right crossbeam of longitudinal framing are fixed on sliding block.
Further, the servo action device includes actuator, hydraulic efficiency servo-valve, load transducer and displacement sensor, institute
Hydraulic efficiency servo-valve, load transducer and displacement sensor are stated in actuator, the output shaft of actuator and self-centering platen pair
It should cooperate.
Further, the servo action device includes actuator, hydraulic efficiency servo-valve, load transducer and displacement sensor, institute
Hydraulic efficiency servo-valve is stated in actuator, the load transducer is set to one end that actuator is contacted with self-centering platen, described
Displacement sensor is set to the other end of actuator.
Further, the material of the transparent briquetting is colourless transparent resin glass.
Further, the video camera is high-speed camera.
Further, the left and right side in test specimen box lower part is respectively equipped with positioning pin, and the pedestal is equipped with corresponding with positioning pin
The location hole of cooperation.
Further, cushion block, the material of the material of the cushion block and transparent briquetting are equipped between the transparent briquetting and test specimen
Unanimously.
Further, the self-centering platen is equipped with pre-loading screw, for pre-tightening self-centering platen in box body.
The present invention has the advantages that compared with prior art：
1, the present invention is due to using transparent briquetting, and video camera is arranged on transparent briquetting and installs hole, and video camera is fixed on
Video camera is installed in hole, and the deformation process of test specimen can be observed and record in real time, since video camera is set to true triaxial experimental provision
Inside, improve the precision of experimental data.
2, the present invention provides six servo action devices in three mutually orthogonal directions of test specimen, so that perpendicular to examination
Six surfaces of part all have independent loads/relieving capacity, ensure that test specimen is able to carry out true triaxial experiment, and being capable of basis
Actual needs simulates increasingly complex stress state.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of test specimen box of the invention；
Fig. 3 is the structural schematic diagram of longitudinal framing of the invention；
Fig. 4 is the structural schematic diagram of axial frame of the invention；
Fig. 5 is the axonometric drawing of axial frame of the invention；
Fig. 6 is the cooperation schematic diagram of longitudinal framing and axial frame of the invention.
In figure, 1-pedestal, 2-test specimen boxes, 21-box bodys, 22-self-centering platens, 221-connecting brackets, 222-is pre-
Tight screw, 23-centering cushion blocks, 24-last items, 25-transparent briquettings, 251-video cameras install hole, 26-extensometers, 27-pads
Block, 28-positioning pins, 3-longitudinal framings, 31-left crossbeams, 32-right crossbeams, 33-connecting columns, 34-fixtures, 4-axial frames
Frame, 41-transverse frames, 42-vertical frames, 5-servo action devices, 51-actuator, 52-hydraulic efficiency servo-valves, 53-load
Sensor, 54-displacement sensors, 6-drive systems, 61-sliding rails, 62-positional cylinders, 63-oil cylinders, 64-hydraulic power sources,
7-video cameras, 8-test specimens.
Specific embodiment
It elaborates with reference to the accompanying drawing to the present invention.
Referring to Fig. 1 to Fig. 6, shown in visualization true triaxial experimental provision, including pedestal 1, loading frame, 2 and of test specimen box
Six servo action devices 5, the loading frame are set on pedestal 1, and test specimen box 2 is set in loading frame, six servo action devices 5
On loading frame, the load perpendicular to 8 surface of test specimen is provided for the test specimen 8 into test specimen box 2.
The test specimen box 2 includes box body 21, self-centering platen 22, centering cushion block 23, last item 24, transparent briquetting 25 and extends
Meter 26.The box body 21 is encircled into cuboid or cube structure by left cover body, right cover body and side wall, provides appearance for test specimen 8
Set cavity.
The quantity of the self-centering platen 22 is six, on six faces of box body 21, six servo action devices 5 it is defeated
Shaft is connected on corresponding self-centering platen 22.The side of the self-centering platen 22 is equipped with connecting bracket 221, extends
The both ends of meter 26 are separately fixed in the connecting bracket 221 of the self-centering platen 22 of opposite two, and extensometer 26 is for detecting examination
The deformation values of part 8 in three directions.Self-centering platen 22 is equipped with centering cushion block 23 towards the side of box body 21, for preventing certainly
Platen 22 of feeling relieved rotates, and then guarantees the centering effect of test specimen.
One end of the last item 24 is connect with 22 disks of self-centering pressure, and the other end of last item 24 passes through box body 21 and transparent briquetting
25 connections, the transparent briquetting 25 are used to be pressed in a face of test specimen 8；The transparent briquetting 25 is equipped with video camera and installs hole
251, video camera, which is installed, is equipped with video camera 7 in hole 251.In order to further increase test data precision, the video camera is using high
Fast video camera.
The loading frame includes longitudinal framing 3 and axial frame 4.The longitudinal framing 3 is fixed on the driving system of pedestal 1
System 6 on, the longitudinal framing 3 include left crossbeam 31, right crossbeam 32 and connecting column 33,33 both ends of connecting column respectively with left cross
Beam 31 is fixedly connected with right crossbeam 32, in order to guarantee that the stability of longitudinal framing 3, the quantity of connecting column 33 are four, left crossbeam
31 and right crossbeam 32 be square plate, four connecting columns 33 are connected on four angles of left crossbeam 31 and right crossbeam 32.Under
Two connecting columns 33 of side are equipped with the fixture 34 for fixing test specimen box 2.
The drive system 6 includes sliding rail 61, sliding block, positional cylinder 62, oil cylinder 63 and hydraulic power source 64；Hydraulic power source 64 is fixed
Position oil cylinder 62 and oil cylinder 63 provide power, and the sliding rail 61 is set on pedestal 1 in left-right direction, and the sliding rail 61, which is equipped with, to be slided
Block, the sliding block is mobile by 63 drives edge sliding rail 61 of oil cylinder, is locked after sliding into designated position by positional cylinder 62, longitudinal
The left crossbeam 31 and right crossbeam 32 of frame 3 are fixed on sliding block.When specific operation, test specimen box 2 is passed through into the folder on connecting column 33
Tool 34 is fixed, and then drives sliding block to move in left-right direction by oil cylinder 63, and then drives the test specimen box in longitudinal framing 3
2 are moved to the center of axial frame 4, then are locked by positional cylinder 64.
The axial direction frame 4 is fixed on pedestal 1, is set between left crossbeam 31 and right crossbeam 32, by two transverse frames
41 and two vertical frames 42 constitute rectangular-ambulatory-plane structures；Six servo action devices 5 be respectively arranged at left crossbeam 31, right crossbeam 32,
The center of two transverse frames 41 and two vertical frames 42.The longitudinal framing 3 and axial frame 4 surround six faces
Body frame is carrying out laboratory, and test specimen box is placed in the inside of hexahedron frame.
The servo action device 5 includes actuator 51, hydraulic efficiency servo-valve 52, load transducer 53 and displacement sensor 54,
The hydraulic efficiency servo-valve 52 is set in actuator 51, the output shaft of actuator 51 and self-centering 22 corresponding matching of platen, convenient for making
The output loads of dynamic device 51 are transmitted on test specimen 8, and load transducer 53 and displacement sensor 54 are set in actuator 51.
In order to guarantee that transparent briquetting 25 has enough intensity and rigidity, material is colourless transparent resin glass, organic
Glass is able to bear the pressure greater than 45MPa.
The left and right side in 2 lower part of test specimen box is respectively equipped with positioning pin 28, and the pedestal 1 is equipped with corresponding with positioning pin 28
The location hole of cooperation.The self-centering platen 22 is equipped with pre-loading screw 222, for pre-tightening self-centering platen 22 in box body 2
On.
In order to guarantee the centering effect of test specimen 8, cushion block 27, the pad are equipped between the transparent briquetting 25 and test specimen 8
The material of block 27 is consistent with the material of transparent briquetting 25, and size is determined according to the specific size of test specimen 8.
When concrete application, comprise the following steps：
Step 1 is opened the box body 21 of test specimen box 2, the cube made or cuboid test specimen 8 is put into box body 21, root
Suitable cushion block 27 is rotated according to the type of test specimen 8, guarantees that test specimen 8 being capable of centering；
Step 2 adjusts the pre-loading screw 222 on the self-centering platen 22 in 8 six faces of test specimen respectively, and test specimen 8 is pre-tightened in test specimen
In box 2；
Test specimen box 2 is fixed on longitudinal framing 3 by the fixture 34 on connecting column 33, then starts hydraulic power source 64 by step 3,
Oil cylinder 63 drives longitudinal framing 3 to move to the center of axial frame 4 along sliding rail 61, is locked by positional cylinder 62,
Guarantee that test specimen 8 is in longitudinal framing 3 and axial frame 4 surrounds in hexahedron frame；
Step 4 controls actuator 51 by hydraulic efficiency servo-valve 52 and is loaded and unloaded, and the output shaft of actuator 51 acts on
Load is transferred to transparent briquetting 25 by last item 24 by self-centering platen 22, self-centering platen 22, and transparent briquetting 25 is pasted with test specimen 8
It closes, and then transfers loads on test specimen 8；
Step 5, demand is loaded and is unloaded to six faces of test specimen 8 according to specific experiments, by being set in transparent briquetting 25
High-speed camera 7 the deformation fracture process and flow event of test specimen 8 are observed and are recorded.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (9)
1. a kind of visualization true triaxial experimental provision, it is characterised in that：Including pedestal（1）, loading frame, test specimen box（2）With six
A servo action device（5）, the loading frame is on pedestal, and test specimen box is set in loading frame, and six servo action devices are set
In on loading frame, for the test specimen into test specimen box（8）Load perpendicular to surface of test piece is provided；
The test specimen box（2）Including box body（21）, self-centering platen（22）, centering cushion block（23）, last item（24）, transparent briquetting
（25）And extensometer（26）；
The box body（21）It is encircled into cuboid or cube structure by left cover body, right cover body and side wall,
The self-centering platen（22）Quantity be six, be set to box body（21）Six faces on, six servo action devices（5）'s
Output shaft is connected on corresponding self-centering platen；The side of the self-centering platen is equipped with connecting bracket（221）, extend
Meter（26）Both ends be separately fixed in the connecting bracket of two opposite self-centering platens；Self-centering platen towards box body one
Side is equipped with centering cushion block（23）, for preventing self-centering platen from rotating；
The last item（24）One end and self-centering platen（22）The other end of connection, last item passes through box body（21）With transparent briquetting
（25）Connection, the transparent briquetting is for being pressed in test specimen（8）A face on；
The transparent briquetting（25）It is equipped with video camera and installs hole（251）, video camera, which is installed, is equipped with video camera in hole（7）.
2. visualization true triaxial experimental provision according to claim 1, it is characterised in that：The loading frame includes longitudinal
Frame（3）With axial frame（4）；
The longitudinal framing（3）It is fixed on pedestal（1）Drive system（6）On, including left crossbeam（31）, right crossbeam（32）And even
Connect column（33）, the connecting column both ends are fixedly connected with left crossbeam and right crossbeam respectively, and connecting column is equipped with for fixing test specimen
Box（2）Fixture（34）；
The axial direction frame（4）It is fixed on pedestal（1）On, it is set to left crossbeam（31）With right crossbeam（32）Between, by two transverse directions
Frame（41）With two vertical frames（42）Constitute rectangular-ambulatory-plane structure；Six servo action devices（5）It is respectively arranged at left crossbeam, the right side
On crossbeam, two transverse frames and two vertical frames.
3. visualization true triaxial experimental provision according to claim 2, it is characterised in that：The drive system（6）Including
Sliding rail（61）, sliding block, positional cylinder（62）And oil cylinder（63）；The sliding rail（61）It is set on pedestal in left-right direction, the cunning
Rail is equipped with sliding block, and the sliding block is mobile by oil cylinder drives edge sliding rail, is locked after sliding into designated position by positional cylinder,
Longitudinal framing（3）Left crossbeam（31）With right crossbeam（32）It is fixed on sliding block.
4. visualization true triaxial experimental provision according to claim 1 or 2, it is characterised in that：The servo action device（5）
Including actuator（51）, hydraulic efficiency servo-valve（52）, load transducer（53）And displacement sensor（54）, the hydraulic efficiency servo-valve,
Load transducer and displacement sensor are set in actuator, the output shaft of actuator and self-centering platen（22）Corresponding matching.
5. visualization true triaxial experimental provision according to claim 1 or 2, it is characterised in that：The transparent briquetting（25）
Material be colourless transparent resin glass.
6. visualization true triaxial experimental provision according to claim 1 or 2, it is characterised in that：The video camera（7）For height
Fast video camera.
7. visualization true triaxial experimental provision according to claim 1 or 2, it is characterised in that：The test specimen box（2）Lower part
Left and right side is respectively equipped with positioning pin（28）, the pedestal（1）It is equipped with the location hole with positioning pin corresponding matching.
8. visualization true triaxial experimental provision according to claim 1 or 2, it is characterised in that：The transparent briquetting（25）
With test specimen（8）Between be equipped with cushion block（27）, the material of the cushion block is consistent with the material of transparent briquetting.
9. visualization true triaxial experimental provision according to claim 1 or 2, it is characterised in that：The self-centering platen
（22）It is equipped with pre-loading screw（222）, for pre-tightening self-centering platen in box body（21）On.
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| CN201810825799.6A CN108918284A (en) | 2018-07-25 | 2018-07-25 | A kind of visualization true triaxial experimental provision |
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| CN201810825799.6A CN108918284A (en) | 2018-07-25 | 2018-07-25 | A kind of visualization true triaxial experimental provision |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827849A (en) * | 2019-04-02 | 2019-05-31 | 贵州大学 | A kind of portable type true triaxial test machine structure and operating method |
| CN110160875A (en) * | 2019-04-22 | 2019-08-23 | 东北大学 | A kind of double-layer concentric loading frame structure suitable for true triaxial test machine |
| CN110501232A (en) * | 2019-07-04 | 2019-11-26 | 同济大学 | Visual true triaxial Seepage-stress coupling experimental rig is realized based on twin shaft rheometer |
| CN110658084A (en) * | 2019-09-24 | 2020-01-07 | 东北大学 | High-rigidity multi-shaft high-stress loading frame device |
| CN111077017A (en) * | 2019-12-30 | 2020-04-28 | 黑龙江科技大学 | Unilateral uninstallation coal seam gas outburst analogue means |
| CN111220452A (en) * | 2020-02-19 | 2020-06-02 | 辽宁工程技术大学 | True triaxial pressure chamber for coal rock simulation test and test method thereof |
| CN111638134A (en) * | 2020-08-03 | 2020-09-08 | 中南大学 | Rock true triaxial test system and full-field strain monitoring device and monitoring method thereof |
| CN113075045A (en) * | 2021-03-29 | 2021-07-06 | 绍兴文理学院 | True triaxial testing machine for realizing coordinated control of stress and rigidity and control method |
| CN114136768A (en) * | 2021-12-09 | 2022-03-04 | 广西大学 | Rock material macro-micro crack propagation continuous observation true triaxial clamp and method |
| CN114279841A (en) * | 2021-12-27 | 2022-04-05 | 东北大学 | True triaxial test device and method integrating high-speed camera shooting and real-time shooting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827849A (en) * | 2019-04-02 | 2019-05-31 | 贵州大学 | A kind of portable type true triaxial test machine structure and operating method |
| CN110160875A (en) * | 2019-04-22 | 2019-08-23 | 东北大学 | A kind of double-layer concentric loading frame structure suitable for true triaxial test machine |
| US11385150B2 (en) | 2019-04-22 | 2022-07-12 | Northeastern University | Double-layer concentric loading frame structure suitable for true triaxial testing machine |
| CN110160875B (en) * | 2019-04-22 | 2021-04-02 | 东北大学 | Double-layer concentric loading frame structure suitable for true triaxial testing machine |
| WO2020215343A1 (en) * | 2019-04-22 | 2020-10-29 | 东北大学 | Two-layer concentric loading frame structure for true triaxial testing machine |
| CN110501232A (en) * | 2019-07-04 | 2019-11-26 | 同济大学 | Visual true triaxial Seepage-stress coupling experimental rig is realized based on twin shaft rheometer |
| WO2021056321A1 (en) * | 2019-09-24 | 2021-04-01 | 东北大学 | High-rigidity and multi-axis high stress loading frame apparatus |
| CN110658084A (en) * | 2019-09-24 | 2020-01-07 | 东北大学 | High-rigidity multi-shaft high-stress loading frame device |
| CN110658084B (en) * | 2019-09-24 | 2020-09-01 | 东北大学 | High-rigidity multi-shaft high-stress loading frame device |
| CN111077017A (en) * | 2019-12-30 | 2020-04-28 | 黑龙江科技大学 | Unilateral uninstallation coal seam gas outburst analogue means |
| CN111220452A (en) * | 2020-02-19 | 2020-06-02 | 辽宁工程技术大学 | True triaxial pressure chamber for coal rock simulation test and test method thereof |
| CN111638134A (en) * | 2020-08-03 | 2020-09-08 | 中南大学 | Rock true triaxial test system and full-field strain monitoring device and monitoring method thereof |
| CN113075045A (en) * | 2021-03-29 | 2021-07-06 | 绍兴文理学院 | True triaxial testing machine for realizing coordinated control of stress and rigidity and control method |
| CN114136768A (en) * | 2021-12-09 | 2022-03-04 | 广西大学 | Rock material macro-micro crack propagation continuous observation true triaxial clamp and method |
| CN114279841A (en) * | 2021-12-27 | 2022-04-05 | 东北大学 | True triaxial test device and method integrating high-speed camera shooting and real-time shooting |
| CN114279841B (en) * | 2021-12-27 | 2024-10-11 | 东北大学 | True triaxial test device and method integrating high-speed shooting and real-time shooting |
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