CN205910062U - Utilize true triaxial test machine to realize that two axial tension of rock press experimental device - Google Patents
Utilize true triaxial test machine to realize that two axial tension of rock press experimental device Download PDFInfo
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- CN205910062U CN205910062U CN201620623393.6U CN201620623393U CN205910062U CN 205910062 U CN205910062 U CN 205910062U CN 201620623393 U CN201620623393 U CN 201620623393U CN 205910062 U CN205910062 U CN 205910062U
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Abstract
The utility model provides an utilize true triaxial test machine to realize that two axial tension of rock press experimental device, includes sample bonding subassembly, stretch assembly and support group spare, test piece bonding subassembly includes frid and frid down, and goes up the frid center and is equipped with the screw, stretch assembly includes first roof, first bottom plate and connecting rod, and the connecting rod lies in the cell wall of bottom plate groove both sides, has still offered first through -hole on the both sides cell wall of the recess of first bottom plate, support group spare includes screw, second roof, second bottom plate and pillar, and the mounting screw hole has been seted up at second roof center, and the pillar is installed in stretch assembly's first through -hole, still is equipped with the second through -hole on the second roof, and stretch assembly's connecting rod is installed in the second through -hole, and mounting screw is in mounting screw hole and screw. The device can accurately measure intensity and deformation under the two axial tension layering spares of rock material with the help of true triaxial compression testing machine.
Description
Technical field
This utility model is related to a kind of realize rock biaxial tension test assay device using true triaxial test machine it is adaptable to tension and compression
Under stress condition, the deformation failure characteristic research of rock, belongs to rock mechanics and engineering technical field.
Background technology
Rock burst is the geological disaster of the country rock ejection property rupture that high-ground stress area is caused due to Underground Engineering Excavation off-load
Phenomenon.Rock burst typically results in the delay of the injures and deaths of personnel, the breaking-up of instrument and equipment and duration, causes great economic damage
Lose.Rock burst genesis mechanism is extremely complex, not yet has that unified, clearly theory to be explaining Rock-burst at present.Therefore, carry out room
Interior rock burst test, reproduces Rock-burst, analyzes the generating process of rock burst in detail, and the failure mechanism research to propulsion rock burst has
Significance.Currently, existing research shows, the preparation process of rock burst can be summarized as cleaving into plate, shearing in bulk, plate bending
The four-stages such as disconnected, overall ejection.After the buried hard rock tunnel excavation in high-ground stress area, the stress of hole Zhou Yanti is:
Ring compressive stress is gradually increased, and when ring compressive stress exceedes rock mass bearing capacity, opening is occurred in the country rock making free face periphery
Draw cleavage fracture, in tunnel ring compressive stress with to hole in there is radial deformation in the presence of, free face top layer rock mass occurs
Draw cleavage fracture formed thin plate, thin plate circumferential pressure effect under buckling phenomenon occurs, when thin plate bending to a certain extent after, thin
Plate will fracture, and leads to the thin plate rupturing and internal sillar to eject with certain initial velocity, is consequently formed rock burst.Cause
This, after high-ground stress buried hard rock tunnel excavation, free face border upper plate split after rock mass hole radially under tension effect,
The hole week tangential direction effect of being under pressure, the generation of rock burst is closely related with the special stress of Platy rock-mass.Additionally, on ground
In lower powerhouse of hydropower station, the rock mass such as dike between the country rock that contacts with rock anchorage beam, turbine-generator units is often in one
Direction tension and the pressurized state of another vertical direction.Thus, the rock under the conditions of this biaxial tension test of laboratory test research simultaneously
Stone mechanical characteristic has important theory value and engineering significance for the safety of deep subterranean tunnel engineering.
At present, biaxial tension test test can be realized by special spring tension and compression testing machine, and spring tension and compression testing machine develops
More ripe, have the characteristics that certainty of measurement height, centering are accurately high.But such testing equipment is costly, keep in repair and usage charges
With higher, during use, need the staff of specialty.Additionally, spring tension and compression testing machine is mainly used for the tension and compression of small-size test piece
The test of mechanical property, the tension and compression stress that can be provided by is relatively low, is not suitable for the heavily stressed tension and compression mechanics of large scale rock test specimen
Performance test.
In addition to spring tension and compression testing machine, many other are also had to be used for the device that materials in tension and compression is tested.For example: " ground power
Learn " 11 phases in 2007 describe a kind of rock material dynamic direct tensile test device having lateral pressure；Application publication number is:
The utility model patent of cn101881716a describes a kind of quantitative tension and compression testing device；Mandate publication No. is cn201955268u
Patent describe a kind of loading test device of concrete biaxial tension and compression.The physique structure of above-mentioned tensile compression test equipment is different,
Carry out also differing greatly using measuring method during materials in tension and compression test, the also ununified judgment criteria of the result of acquisition.
Biaxial tension test test may also be employed true triaxial pressure testing machine to realize with reference to special device.True triaxial pressure tries
The machine of testing is conventional rock mechanics experiment equipment, has the function of three-dimensional independent compression, and the three-dimensional stress for rock test is multiple
The Mechanics Performance Testing of miscellaneous state.True triaxial pressure testing machine directly can not carry out biaxial tension test test, can pass through specially supporting
Device is realized.
Application publication number is that the utility model patent of cn102735542a describes a kind of concrete multi-shaft tension and compression method.Examination
Before testing, the tension face of test specimen is directly bonded to pressing plate together with.During test, the test specimen being stained with pressing plate is placed into triaxial test
On machine, it is bolted pressing plate and cuts somebody's hair with loading, loading cuts somebody's hair is located remotely from each other the tension realizing rock sample.Meanwhile, by pressurized
Load plate directly compressive stress is applied on test specimen.In process of the test, operating process is complex, is difficult centering, by precompressed
It is difficult to ensure that test specimen uniform force.
Application publication number is that the utility model patent of cn102323157a discloses a kind of concrete pulling compressive stress combination side
Method.First pass through adhesive glue plastic brush is bonded on test specimen, the brush teeth face of plastic brush is placed on test specimen tension face, and
Compacting.Then stick steel plate is posted with hairbrush basal surface binding agent.During test, will be bondd by the bolt with spherical hinge
Steel plate and power transmission steel plate are bonded together, and power transmission steel plate is located remotely from each other the tension realizing rock sample.Meanwhile, by pressing load plate direct
Pressure is applied on rock sample.Tensile compression test is carried out using this device, sample prepares complex.By adhesive glue by hairbrush and
Stick steel plate, stick steel plate and power transmission steel plate stick together, and easily cause the discontinuity of rock sample in process of the test, lead to relatively
Big error.
Application publication number is that the utility model patent of cn103487317a describes drawing under a kind of concrete multi-shaft test
Pressure loading is cut somebody's hair method for designing.This device does not need using structure gemel connection cube specimen and pressing plate, but by test specimen
The preburied component in portion is connected with drawing load plate.Being connected by the pull bar cutting with scissors with semicircle bulb draws load plate and loading to cut somebody's hair, and protects
Demonstrate,prove to load and cut somebody's hair and drawn the precise alignment loading version.Loading cuts somebody's hair is located remotely from each other the tension realizing rock sample.Applying pulling force
Meanwhile, load plate will be pressed to be fixed on test specimen using electromagnetic lock, directly be pressure is applied on test specimen by pressing load plate.This dress
Put and have particular/special requirement to test specimen, be not suitable for the tension and compression deformation damage study of rock material.
The pulling pressing device of above-mentioned document introduction is mainly used for the tensile compression test of concrete, less for rock.
Utility model content
This utility model is directed to the deficiencies in the prior art, provides one kind to realize rock biaxial tension test using true triaxial test machine
The device of test is possibly realized so that carrying out biaxial tension test test with reference to true triaxial test machine.
To achieve these goals, this utility model employs technical scheme below:
A kind of device realizing the test of rock biaxial tension test using true triaxial test machine, including sample bonded assemblies, stretching
Assembly and support component,
Described test specimen bonded assemblies include frid and lower frid, and upper frid center is provided with screw,
Described stretching assembly includes the first top board, the first base plate and connecting rod, and described first base plate offers section
For the groove of the font of falling t, on the cell wall of the first bottom plate groove both sides, connecting rod upper end is fixed on the first top board to connecting rod
On, connecting rod lower end is fixed on the first base plate, and the both sides cell wall of the groove of the first base plate is further opened with first through hole,
Described support component includes screw, the second top board, the second base plate and pillar, and the second top board center offers screw
Installing hole, pillar is arranged in the first through hole of stretching assembly, and pillar upper end is fixed on the second top board, and lower rod end is solid
It is scheduled on the second base plate, the second top board is additionally provided with the second through hole, the connecting rod of stretching assembly is arranged in the second through hole, screw
It is arranged in screw mounting hole and screw.
Also include compression assembly, described compression assembly includes two pieces of pressure bearing plates and two block pressur plate connectors, two pieces
Pressure bearing plate is separately mounted to two relative sides of rock sample, and it is another that two block pressur plate connectors are separately mounted to rock sample
Outer two relative sides, on pressure bearing plate, two ends are respectively equipped with screw, and pressing plate connector is respectively equipped with two ends
Strip through hole, stop screw is arranged in screw through long strip through hole.
Described screw is bulb screw, and the shape of screw mounting hole is coordinated with bulb screw.
Form cube frame, pillar is arranged at four angles that connecting rod is arranged between the first top board and the first base plate
Form cube frame at four angles of the second top board and the second base plate.
First top board is provided with operation through hole.
During test, also include sample, sample upper end is bonded in the groove of frid, and sample lower end is bonded in lower frid
In groove, lower frid is fitted close the horizontal component being arranged on the font groove of falling t, and sample is arranged on the vertical of the font groove of falling t
Part.
Described sample is cubic shaped, being shaped as and sample top surface of the groove of described lower frid and the groove of upper frid
The close-fitting square groove with bottom surface.
Compared with prior art, the beneficial effect that this utility model possesses:
(1) realize the tension and compression characteristic research of large scale rock test specimen: this device can be used for a size of 200mm × 200mm ×
The tensile compression test of 200mm (length × width × height) rock sample.
(2) ensure test specimen stress uniaxial force, not eccentric: test specimen upper and lower ends are fixed on the recessed of adhesive board by adhesive glue
It is ensured that test specimen center and cementing plate center accurate alignment in groove.Screw is thrown using ball and passes through b framework top board and upper adhesive board
Center screw is it is ensured that upper frame pressing plate and adhesive board center accurate alignment.
(3) simple to operate: cube specimen to be installed in device, according to the load mode of common Experiments of Machanics, by lotus
Carry and be applied on device so that it may realize the tensile compression test of test specimen.
(4) it is beneficial to sample centering, ensure that uniform stressed.By means of true triaxial pressure testing machine, can measure exactly
Intensity under the conditions of rock material biaxial tension test and deformation.The installation and removal of fixture are convenient, and process of the test is easily operated.Cause
This, compare existing rock tensile compression test equipment, and this tension and compression testing device is more simple and practical.
(5) realize the mechanical test in tension and compression condition for the tension and compression rock sample, be in rock mass under tension and compression stress state for analysis
Deformation-failure character provide effective research method.
Brief description
Fig. 1 is structural representation when stretching assembly and support component fit together.
Fig. 2 is test specimen bonded assemblies structural profile schematic diagram.
Fig. 3 is the structural representation of stretching assembly.
Fig. 4 is the structural representation of support component.
Fig. 5 is the scheme of installation of compression assembly.
Fig. 6 is biaxial tension test device overall structure flat cutting faces schematic diagram one.
Fig. 7 is biaxial tension test device overall structure flat cutting faces schematic diagram two.
Specific embodiment
Below by embodiment, the technical solution of the utility model is further elaborated.
Embodiment 1
A kind of device realizing the test of rock biaxial tension test using true triaxial test machine, including sample bonded assemblies, stretching
Assembly and support component,
Described test specimen bonded assemblies include frid 10 and lower frid 8, and upper frid 10 center is provided with screw 13,
Described stretching assembly includes the first top board 1, the first base plate 4 and connecting rod 2, and described first base plate 4 offers
Section is the groove of the font of falling t, and connecting rod 2 is located on the cell wall of the first base plate 4 groove both sides, and connecting rod 2 upper end is fixed on the
On one top board 1, connecting rod 2 lower end is fixed on the first base plate 4, and the both sides cell wall of the groove of the first base plate 4 is further opened with
One through hole 15,
Described support component includes screw 14, the second top board 3, the second base plate 6 and pillar 5, and the second top board 3 center opens up
There is screw mounting hole 17, pillar 5 is arranged in the first through hole 15 of stretching assembly, and pillar 5 upper end is fixed on the second top board 3
On, pillar 5 lower end is fixed on the second base plate 6, and the second top board 3 is additionally provided with the second through hole 16, and the connecting rod 2 of stretching assembly is pacified
It is contained in the second through hole, screw 14 is arranged in screw mounting hole 17 and screw 13.
Also include compression assembly, described compression assembly includes two pieces of pressure bearing plates 12 and two block pressur plate connectors 9, two
Block pressure bearing plate 12 is separately mounted to 7 two relative sides of rock sample, and two block pressur plate connectors 9 are separately mounted to rock
Two other relative side of sample 7, on pressure bearing plate 12, two ends are respectively equipped with screw, and pressing plate connector 9 is near two ends
Place is respectively equipped with strip through hole, and stop screw is arranged in screw through long strip through hole.
Described screw 14 is bulb screw, and the shape of screw mounting hole 17 is coordinated with bulb screw.
Form cube frame, pillar is pacified at four angles that connecting rod 2 is arranged between the first top board 1 and the first base plate 4
It is contained in formation cube frame at the second top board 3 and four angles of the second base plate 6.
First top board is provided with operation through hole 18.Operation through hole 18 installs or removes screw 14 for convenience.
During test, also include sample 7, sample 7 upper end is bonded in the groove of frid 10, and sample 7 lower end is bonded in down
In the groove of frid 8, lower frid 8 is fitted close the horizontal component being arranged on the font groove of falling t, and it is recessed that sample 7 is arranged on the font of falling t
The vertical portion of groove.
Described sample 7 is cubic shaped, being shaped as and sample of the groove of described lower frid 8 and the groove of upper frid 10
The close-fitting square groove of 7 top surfaces and bottom surface.
Having of this utility model device is as follows using step:
(1) take the rock sample 7 of one piece of cubic shaped, adhesive glue higher for adhesive strength is uniformly paved in upper groove
The upper and lower ends of the bottom land of plate 10 and lower frid 8, groove surrounding inwall and rock sample 7, rock sample 7 is put into lower frid 8
In square groove, and upper frid 10 is buckled in rock sample upper end it is ensured that upper and lower ends face and left and right both ends of the surface are with groove surface and groove
Inwall fits tightly no crack, increases the contact area of test specimen and adhesive board, and after placing 24 hours, adhesive glue solidifies, and rock tries
Viscosity between sample 7 and upper frid 10 and lower frid 8 reaches certain intensity.
(2) test specimen assembling bonded assemblies are installed in stretching assembly, lower frid 8 is fitted close and is arranged on the word of falling t
The horizontal component of connected in star, rock sample 7 is arranged on the vertical portion of the font groove of falling t.Section is the groove of the font of falling t, meaning
Taste the width of the bottom horizontal portion of groove more than the width of vertical portion at opening, then plays frid 8 to be stuck in groove
In horizontal component.
(4) the first base plate 4 is lifted up, screw 14 is screwed in screw mounting hole 17 and screw 13 so that on groove
Plate 10 and the second top board 3 are fixed together, simultaneously test specimen to be guaranteed can accurately centering, not eccentric during vertical applied force.
(5) two pieces of pressure bearing plates 12 and two block pressur plate connectors 9 are installed, because pressing plate connector 9 is at two ends
It is respectively equipped with strip through hole, two pieces of pressure bearing plates 12 can be to the mobile force in center, can be by by pressure bearing plate 12
External load is uniformly applied to the surface of rock sample 7.
(6) the above-mentioned assay device assembling is positioned in the pressure chamber of Real three-axile press, to the first top board 1 gradually
Apply vertical axis pressure, whole stretching assembly moves down, and the first base plate 1 moves down, because lower frid 8 is buckled in the first bottom
In plate 4, then vertical axis pressure drives rock sample 7 to move downwardly together.And support component maintains static, rock sample 7
Upper surface is fixed together with the second top board 3 by upper frid 10, and rock sample 7 upper end maintains static, and lower end moves down, from
And reach the purpose of rock sample 7 vertical direction tension.
(7) while vertical direction tension, 11 are cut somebody's hair using the horizontal direction of true triaxial pressure testing machine, by two pieces
Bearing plate 12 applies pressure to rock sample 7, from the tension and compression mechanical test achieving indoor rock sample.
(4), while rock sample 7 tensile compression test, can be adopted by force transducer and external lvdt difference deformation-sensor
Collection stress and strain signal, and pass to computer.Itemized record tension direction and the stress-strain relation in compressive stress direction
Curve, the tension of rock and the stretcher strain of comprcssive strength and rock and compression during the final acquisition rock failure mechanism of rock.
The operation principle of this device is: vertical pressure is converted into vertical drawing by two sets of frame structures using device
Power is so that test specimen upper/lower terminal tension.Additionally, directly pressure is applied to a horizontal axis of test specimen by bearing plate.By
The biaxial tension test that this realizes rock sample loads.Described test specimen bonded assemblies effect is fixing rock sample.Its work of stretching assembly
With being to convert the pressure to pulling force to be applied to rock sample both ends of the surface.Test specimen upper and lower ends are fixed on upper frid 10 by adhesive glue
With in the groove of lower frid 8 it is ensured that test specimen center and upper frid 10 and lower frid 8 center accurate alignment, and guarantee the first top board 1
With upper frid 10 center accurate alignment it is ensured that apply pressure when, test specimen axial tension, not eccentric.
Claims (7)
1. a kind of using true triaxial test machine realize rock biaxial tension test test device it is characterised in that include sample bonding
Assembly, stretching assembly and support component,
Described test specimen bonded assemblies include frid and lower frid, and upper frid center is provided with screw,
Described stretching assembly includes the first top board, the first base plate and connecting rod, described first base plate offers section for t
The groove of font, connecting rod is located on the cell wall of the first bottom plate groove both sides, and connecting rod upper end is fixed on the first top board, connects
Bar lower end is fixed on the first base plate, and the both sides cell wall of the groove of the first base plate is further opened with first through hole,
Described support component includes screw, the second top board, the second base plate and pillar, and the second top board center offers screw and installs
Hole, pillar is arranged in the first through hole of stretching assembly, and pillar upper end is fixed on the second top board, and lower rod end is fixed on
On second base plate, the second top board is additionally provided with the second through hole, the connecting rod of stretching assembly is arranged in the second through hole, screw is installed
In screw mounting hole and screw.
2. as claimed in claim 1 using true triaxial test machine realize the test of rock biaxial tension test device it is characterised in that
Also include compression assembly, described compression assembly includes two pieces of pressure bearing plates and two block pressur plate connectors, two pieces of pressure pressure-bearings
Plate is separately mounted to two relative sides of rock sample, and two block pressur plate connectors are separately mounted to two other phase of rock sample
To side, on pressure bearing plate, two ends are respectively equipped with screw, pressing plate connector be respectively equipped with two ends strip lead to
Hole, stop screw is arranged in screw through long strip through hole.
3. as claimed in claim 1 using true triaxial test machine realize the test of rock biaxial tension test device it is characterised in that
Described screw is bulb screw, and the shape of screw mounting hole is coordinated with bulb screw.
4. as claimed in claim 1 using true triaxial test machine realize the test of rock biaxial tension test device it is characterised in that
Form cube frame, pillar is arranged on the second top board at four angles that connecting rod is arranged between the first top board and the first base plate
With formation cube frame at four angles of the second base plate.
5. as claimed in claim 1 using true triaxial test machine realize the test of rock biaxial tension test device it is characterised in that
First top board is provided with operation through hole.
6. as claimed in claim 1 using true triaxial test machine realize the test of rock biaxial tension test device it is characterised in that
During test, also include sample, sample upper end is bonded in the groove of frid, sample lower end is bonded in the groove of lower frid,
Lower frid is fitted close the horizontal component being arranged on the font groove of falling t, and sample is arranged on the vertical portion of the font groove of falling t.
7. as claimed in claim 6 using true triaxial test machine realize the test of rock biaxial tension test device it is characterised in that
Described sample is cubic shaped, and being shaped as of the groove of described lower frid and the groove of upper frid is tight with sample top surface and bottom surface
Leakproof fit square groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623393.6U CN205910062U (en) | 2016-06-22 | 2016-06-22 | Utilize true triaxial test machine to realize that two axial tension of rock press experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623393.6U CN205910062U (en) | 2016-06-22 | 2016-06-22 | Utilize true triaxial test machine to realize that two axial tension of rock press experimental device |
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| CN201620623393.6U Expired - Fee Related CN205910062U (en) | 2016-06-22 | 2016-06-22 | Utilize true triaxial test machine to realize that two axial tension of rock press experimental device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865925A (en) * | 2016-06-22 | 2016-08-17 | 广西大学 | Device for utilizing real triaxial testing machine to realize rock biaxial tension test |
| CN109443946A (en) * | 2018-12-25 | 2019-03-08 | 长沙矿山研究院有限责任公司 | A kind of Point Load Strength Instrument and Point Load Tests method |
| CN109632491A (en) * | 2019-01-24 | 2019-04-16 | 湖南科技大学 | It is a kind of for testing the device and its application method of test specimen tensile strength |
| CN111766162A (en) * | 2020-07-07 | 2020-10-13 | 鞍钢股份有限公司 | Automobile sheet strain fatigue test device and method |
| CN115135492A (en) * | 2019-12-20 | 2022-09-30 | 纽约州州立大学研究基金会 | System and method for characterizing equibiaxial compressive strength of two-dimensional braided composites |
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2016
- 2016-06-22 CN CN201620623393.6U patent/CN205910062U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865925A (en) * | 2016-06-22 | 2016-08-17 | 广西大学 | Device for utilizing real triaxial testing machine to realize rock biaxial tension test |
| CN109443946A (en) * | 2018-12-25 | 2019-03-08 | 长沙矿山研究院有限责任公司 | A kind of Point Load Strength Instrument and Point Load Tests method |
| CN109443946B (en) * | 2018-12-25 | 2024-03-08 | 长沙矿山研究院有限责任公司 | Point load tester and point load test method |
| CN109632491A (en) * | 2019-01-24 | 2019-04-16 | 湖南科技大学 | It is a kind of for testing the device and its application method of test specimen tensile strength |
| CN115135492A (en) * | 2019-12-20 | 2022-09-30 | 纽约州州立大学研究基金会 | System and method for characterizing equibiaxial compressive strength of two-dimensional braided composites |
| CN115135492B (en) * | 2019-12-20 | 2023-09-08 | 纽约州州立大学研究基金会 | System and method for characterizing equibiaxial compressive strength of two-dimensional braided composite material |
| US11768193B2 (en) | 2019-12-20 | 2023-09-26 | The Research Foundation For The State University Of New York | System and method for characterizing the equibiaxial compressive strength of 2D woven composites |
| CN111766162A (en) * | 2020-07-07 | 2020-10-13 | 鞍钢股份有限公司 | Automobile sheet strain fatigue test device and method |
| CN111766162B (en) * | 2020-07-07 | 2023-04-14 | 鞍钢股份有限公司 | Automobile sheet strain fatigue test device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20190622 |
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| CF01 | Termination of patent right due to non-payment of annual fee |