CN109163975B - Rock biaxial tension experimental device and application method thereof - Google Patents
Rock biaxial tension experimental device and application method thereof Download PDFInfo
- Publication number
- CN109163975B CN109163975B CN201811331108.3A CN201811331108A CN109163975B CN 109163975 B CN109163975 B CN 109163975B CN 201811331108 A CN201811331108 A CN 201811331108A CN 109163975 B CN109163975 B CN 109163975B
- Authority
- CN
- China
- Prior art keywords
- plate
- movable frame
- base
- sample
- stretching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011435 rock Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims description 22
- 238000002474 experimental method Methods 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 3
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- 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
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0254—Biaxial, the forces being applied along two normal axes of the specimen
-
- 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
Landscapes
- 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
The invention discloses a rock biaxial tension experimental device and an application method thereof. The base is transversely arranged, the fixed frame is connected to the central position of the base, and the movable frame can move up and down and is sleeved on the fixed frame in a penetrating manner. The upper end of the fixed frame is connected with an upper stretching base plate, the lower end of the movable frame is connected with a lower stretching base plate, the telescopic component comprises a transverse loading plate and force transmission pieces connected with the transverse loading plate, the force transmission pieces are symmetrically connected to the base and are respectively arranged on two sides of the fixed frame, and the upper end of the movable frame is linked with the force transmission pieces. The top surface and the bottom surface of the sample are respectively bonded with the two stretching base plates, the pair of side surfaces of the sample are respectively bonded with the transverse loading plate, downward vertical load is applied to the upper end of the movable frame, the movable frame moves downward and simultaneously drives the force transmission piece to move transversely, vertical and transverse biaxial stretching is carried out on the sample simultaneously, and experimental data are real and reliable.
Description
Technical Field
The invention relates to rock mechanical parameter testing equipment, in particular to a rock biaxial tension experimental device and an application method thereof.
Background
Rock as a heterogeneous material, after geological action for billions of years, the mechanical properties of the rock are also affected by internal mineral combinations and microcracks, so that the mechanical properties of the rock material are important indexes for evaluating the structural stability of underground engineering. The traditional rock mechanical property test comprises uniaxial compression, uniaxial tension, shearing test and the like, and the mechanical parameters obtained by the experimental test means can provide important reference for general rock engineering design and support. However, the traditional mechanical property test parameters cannot reflect the real stress state of the rock mass in all projects, such as a rock sheet, in an underground project, the rock sheet is generally in a two-way stress state, the sheet part can be obviously stretched, and a general uniaxial tensile test cannot accurately describe the mechanical property of the rock sheet.
At present, common rock testing machines cannot perform biaxial tensile tests, and large testing machines cannot further perform microscopic cracking behavior and mechanism research under biaxial tensile of rocks.
Disclosure of Invention
The invention aims to provide a biaxial tension experimental device which is accurate and reliable in test and can effectively solve the problem that the conventional experimental system cannot carry out biaxial tension test on rocks and an application method thereof.
According to the rock biaxial tension experimental device provided by the invention, a rock sample is a cuboid sample. The device comprises a base, a vertical fixed frame, a movable frame and a transverse telescopic component, wherein the base is transversely arranged, the fixed frame is connected at the central position of the base, the movable frame can be penetrated and connected on the fixed frame in an up-and-down motion way, the upper end of the fixed frame is positioned between the upper end and the lower end of the movable frame, the upper end of the fixed frame is connected with an upper stretching base plate, the lower end of the movable frame is connected with a lower stretching base plate, the telescopic component comprises a transverse loading plate and a force transmission piece connected with the transverse loading plate, the force transmission piece is symmetrically connected on the base and is respectively arranged at two sides of the fixed frame, the upper end of the movable frame is linked with the force transmission piece, the top surface and the bottom surface of a sample are respectively bonded with the two stretching base plates, a pair of side surfaces are respectively bonded with the transverse loading plate, when, the specimens were simultaneously biaxially stretched vertically and transversely.
In an embodiment of the above technical solution, the upper surface of the base is a horizontal plane, the fixing frame includes a horizontal top plate and a supporting member connected to a lower side of the horizontal top plate, and a lower end of the supporting member is connected to the upper surface of the base.
In an embodiment of the above technical scheme, the movable frame includes a rectangular top plate, a rectangular bottom plate and connecting columns, the planar dimension of the rectangular top plate is greater than that of the rectangular bottom plate, the rectangular top plate and the rectangular bottom plate are both horizontally arranged, the connecting columns are respectively fixed at four corners of the rectangular bottom plate, and the upper ends of the connecting columns penetrate through the horizontal top plate of the fixed frame and then are fixed on the rectangular top plate.
In one embodiment of the above technical solution, a linear bearing is installed at a position corresponding to the connecting column on the horizontal top plate of the fixed frame, the upper end of the connecting column passes through the linear bearing, and the linear bearing guides the vertical movement of the connecting column.
In an embodiment of the foregoing technical solution, a rectangular groove is formed in a position of the upper surface of the base corresponding to the rectangular bottom plate of the movable frame, and the rectangular bottom plate is located in the rectangular groove.
In an embodiment of the above technical solution, the force transmission member of the retractable assembly is a transverse stretching rod, the transverse stretching rod is matched with a sliding rail, one end of the transverse stretching rod is connected to the transverse loading plate, the other end of the transverse stretching rod is connected to the sliding rail through a sliding chute, and the sliding rail is symmetrically connected to the upper surface of the base corresponding to the central plane of the movable frame rectangular top plate in the length direction.
In one embodiment of the above technical solution, a telescopic linkage rod is hinged between each of two ends of the rectangular top plate of the movable frame and the transverse stretching rod, and each of two ends of the linkage rod can rotate around the hinged position.
In one embodiment of the above technical scheme, a rectangular bottom plate of the movable frame is provided with a T-shaped groove, the cross section of the lower stretching base plate is i-shaped, and a lower wing plate of the lower stretching base plate is inserted into the T-shaped groove.
In one embodiment of the above technical solution, the upper stretching base plate is a rectangular plate, a screw rod is connected to the center of the upper stretching base plate, and the screw rod passes through the horizontal top plate of the fixed frame and is locked by a nut.
The method for carrying out the biaxial tension experiment on the rock by using the technical scheme comprises the following steps:
(1) bonding a transverse loading plate to a pair of side walls of a sample, and bonding the sample to the upper surface of a lower tensile base plate;
(2) connecting the lower stretching base plate to the rectangular bottom plate of the movable frame;
(3) lifting the inner frame upwards, and connecting the transverse loading plate with the force transmission assembly;
(4) bonding the sample with an upper tensile base plate;
(5) applying a downward vertical load to the upper end of the movable frame by using a rock shear rheometer until the test sample is broken and destroyed; shooting a crack propagation process in the sample by adopting a front-mounted camera in the loading process, recording real-time load and displacement, and observing and shooting a damaged surface;
(6) analyzing the recorded data after the experiment is finished;
(7) and replacing the sample, repeating the steps and applying different vertical loads to the sample.
The working principle of the invention is as follows: the top surface of the sample is connected with a horizontal top plate of the fixed frame through an upper stretching base plate and a screw nut, the bottom surface of the sample is connected with a rectangular bottom plate of the movable frame through a lower stretching base plate, and a pair of side walls of the sample are respectively connected with the telescopic assemblies which are symmetrically arranged. The upper end of the movable frame and the telescopic assembly are connected into a whole through the linkage rod, so that when a vertical downward load is applied to the movable top plate of the movable frame, the movable frame moves downwards, the rectangular bottom plate of the movable frame pulls the sample downwards through the lower stretching base plate, and the upper stretching base plate pulls the sample upwards. And when the movable frame moves downwards, the transverse stretching rod of the telescopic assembly slides outwards along the slide rail through the linkage rod, and meanwhile, transverse stretching is applied to the sample. That is to say, vertical load is applied to the rectangular top plate of the movable frame, and vertical and horizontal biaxial stretching of the sample can be simultaneously realized.
The vertical movable frame and the transverse telescopic assembly are linked, so that the vertical and transverse biaxial stretching can be simultaneously carried out on the sample only by applying vertical load, and the movement of the horizontal stretching rods of the movable frame and the telescopic assembly is stable and reliable, so that the device has the advantages of simple structure and convenience in operation. Simultaneously, the load is applied through the rock axial loading instrument, so that experimental data obtained by simultaneously carrying out biaxial stretching on the sample by the device are real and reliable, and scientific experimental conditions can be provided for underground engineering excavation and design.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
Fig. 2 is a schematic top view of fig. 1.
Fig. 3 is a side view of fig. 1.
Fig. 4 is a schematic view showing the assembly of the base, the fixed frame, the movable frame and the upper mat in fig. 1.
Fig. 5 is an assembly view of the telescopic assembly, the telescopic linkage rod and the movable frame in fig. 1.
Detailed Description
As shown in fig. 1, in the biaxial tension rock experiment apparatus disclosed in this example, the rock sample is a cuboid sample. The experimental device mainly comprises a base 1, a fixed frame 2, a movable frame 3, a telescopic component 4, a linkage rod 5, an upper stretching base plate 6 and a lower stretching base plate 7.
As can be seen from fig. 1 and 2, the base 1 of the present embodiment is a rectangular base, and a rectangular groove 11 is formed in the middle of the upper surface in the length direction, and the width of the rectangular groove is the same as the width of the base 1.
As shown in fig. 1, 3 and 4, the fixing frame 2 of the present embodiment is composed of a horizontal top plate 21 having a rectangular shape and four supporting plates at lower corners thereof.
As can be seen from fig. 1, 3 and 4, the lower ends of the four supporting plates of the fixing frame 2 are fixed on the base 1, and the length direction central plane of the horizontal top plate 21 is coplanar with the length direction central plane of the rectangular groove 11.
In order to ensure the integral performance of the base and the fixed frame, the base and the fixed frame can be cut and formed by adopting convex integral steel.
As can be seen from fig. 1, 2 and 4, the movable frame 3 includes a rectangular top plate 31 having a larger planar size than that of the rectangular bottom plate, a rectangular bottom plate 32, and a connecting post 33, both of which are arranged along a horizontal plane. The rectangular bottom plate 32 is located in the rectangular groove on the base 1, and the size of the rectangular bottom plate is slightly smaller than that of the rectangular groove. The rectangular top plate 31 is positioned above the horizontal top plate 21 of the fixed frame 2, the lower ends of the four connecting columns 33 are respectively fixed at four corners of the rectangular bottom plate 32, and the upper ends of the four connecting columns respectively penetrate through the horizontal top plate 21 and then are fixedly connected with the rectangular top plate 31. The horizontal top plate is provided with a linear bearing corresponding to the connecting column, and the connecting column passes through the linear bearing 22. When the connecting column moves up and down, the linear bearing has small friction and can play a role in guiding.
As can be seen from fig. 1, 2 and 5, the telescopic assembly 4 includes a transverse stretching rod 41, a rectangular loading plate 42 and a slide rail 43, one end of the transverse stretching rod 41 is detachably and vertically connected to the rectangular loading plate 42 at a central position, the other end is connected to the slide rail 43 through a slide groove, and the slide rail 43 is symmetrically connected to the upper surface of the base 1 about the longitudinal central plane of the base 1. The connecting position of the slide rail on the base corresponds to the length direction central plane of the movable frame rectangular top plate.
The slide rail 43 of the present embodiment is a cylinder having an axial plane, and the circular arc angle of the cylinder is about 3/4 circumferential angles. The sliding grooves on the transverse stretching rod 41 wrap the sliding rails 43 as much as possible to ensure that the transverse stretching rod 41 is derailed in the middle of the sliding process.
As can be seen from fig. 1, 3 and 5, two ends of the linkage rod 5 are respectively hinged with the rectangular top plate 31 of the movable frame 3 and the transverse stretching rod 41 of the telescopic assembly 4 through pin shafts. The two ends of the length direction central plane of the rectangular top plate are respectively provided with a hinged ear seat, and the outer end of the transverse stretching rod is provided with a hinged groove. The length of the linkage rod 5 can be adjusted.
As shown in fig. 1, the upper tension pad 6 is a rectangular plate, the plane size of which is the same as the top surface size of the sample, a screw 8 is connected to the center of the rectangular plate, and the upper end of the screw is locked by a wing nut after passing through a mounting hole at the center of the horizontal top plate of the fixed frame. The height position of the upper stretching base plate can be adjusted through a screw rod.
As shown in fig. 1, a T-shaped groove is formed in the central surface of the rectangular bottom plate of the movable frame 3 in the length direction. The cross section of the lower stretching base plate 7 is I-shaped, and the lower wing plate of the lower stretching base plate is inserted into the T-shaped groove.
The working principle of the device is as follows: the top surface of the sample is connected with a horizontal top plate of the fixed frame through an upper stretching base plate and a screw nut, the bottom surface of the sample is connected with a rectangular bottom plate of the movable frame through a lower stretching base plate, and a pair of side walls of the sample are respectively connected with the telescopic assemblies which are symmetrically arranged. The upper end of the movable frame and the telescopic assembly are connected into a whole through the linkage rod, so that when a vertical downward load is applied to the movable top plate of the movable frame, the movable frame moves downwards, the rectangular bottom plate of the movable frame pulls the sample downwards through the lower stretching base plate, and the upper stretching base plate pulls the sample upwards. And when the movable frame moves downwards, the transverse stretching rod of the telescopic assembly slides outwards along the slide rail through the linkage rod, and meanwhile, transverse stretching is applied to the sample. That is to say, apply vertical load for the rectangle roof of movable frame, can realize simultaneously vertical and horizontal biax tensile to the sample, simple structure, convenient operation are reliable.
The motion of the movable frame and the motion of the transverse stretching rod are stable and reliable, and simultaneously, the load is applied through the rock axial loading instrument, so that the device can truly and reliably obtain experimental data by simultaneously carrying out biaxial stretching on the sample.
When this device carries out the biaxial stretching experiment to the sample, arrange whole device in rock axial loading machine in, exert vertical load through the axial loading platform, the experiment concrete step as follows:
(1) a pair of side walls of the sample were coated with a high-power glue, the transverse load plate was bonded to the pair of side walls, and then the bottom surface of the sample was coated with a high-power glue, and the sample was bonded to the upper wing plate of the lower tensile pad.
(2) And inserting the lower wing plate of the lower extension base plate into the T-shaped groove on the rectangular bottom plate of the movable frame.
(3) And lifting the inner frame upwards, and connecting the transverse loading plate and the transverse stretching rod through bolts.
(4) And (3) coating the top surface of the sample with strong glue, and adjusting the height position of the upper stretching base plate through a screw connected with the upper stretching base plate to bond the upper stretching base plate and the top surface of the sample.
(5) Applying a downward vertical load to a rectangular top plate of the movable frame by using a rock axial loading instrument, wherein the loading rate is 0.1mm/min until the test sample is broken and damaged; and shooting the crack propagation process inside the sample by adopting a camera in the loading process, recording the real-time load and displacement, and observing and shooting the damaged surface. The camera is arranged right in front of the other pair of side walls of the sample.
(6) After the experiment is finished, parameters such as final load, displacement and the like can be stored and derived through Excel, and researchers can analyze the mechanical properties of the rock under the action of biaxial tension by utilizing the data.
(7) And (5) replacing the sample, applying different vertical loads to the sample, and obtaining corresponding data through repeated experiments. The invention not only can realize the biaxial tension test of the rock, but also is convenient for observing the crack initiation and expansion process of the internal cracks of the rock under the biaxial tension test.
Claims (10)
1. The utility model provides a tensile experimental apparatus of rock biax, rock sample is cuboid shape appearance body, its characterized in that: the device comprises a base, a vertical fixed frame, a movable frame and a transverse telescopic component, wherein the base is transversely arranged, the fixed frame is connected at the central position of the base, the movable frame can be penetrated and connected on the fixed frame in an up-and-down motion way, the upper end of the fixed frame is positioned between the upper end and the lower end of the movable frame, the upper end of the fixed frame is connected with an upper stretching base plate, the lower end of the movable frame is connected with a lower stretching base plate, the telescopic component comprises a transverse loading plate and a force transmission piece connected with the transverse loading plate, the force transmission piece is symmetrically connected on the base and is respectively arranged at two sides of the fixed frame, the upper end of the movable frame is linked with the force transmission piece, the top surface and the bottom surface of a sample are respectively bonded with the two stretching base plates, a pair of side surfaces are respectively bonded with the transverse loading plate, when, the specimens were simultaneously biaxially stretched vertically and transversely.
2. The rock biaxial tension test device of claim 1, wherein: the upper surface of base is the horizontal plane, fixed frame includes horizontal roof and connects the support piece of horizontal roof downside, and the lower extreme of support piece is connected in the upper surface of base.
3. The rock biaxial tension test device of claim 2, wherein: the movable frame comprises a rectangular top plate, a rectangular bottom plate and connecting columns, the plane size of the rectangular top plate is larger than that of the rectangular bottom plate, the rectangular top plate and the rectangular bottom plate are both horizontally arranged, the connecting columns are respectively fixed at four corners of the rectangular bottom plate, and the upper ends of the connecting columns penetrate through the horizontal top plate of the fixed frame and then are fixed on the rectangular top plate.
4. The rock biaxial tension test device of claim 3, wherein: the upper end of the connecting column penetrates through the linear bearing, and the linear bearing guides the vertical movement of the connecting column.
5. The rock biaxial tension test device of claim 3, wherein: the upper surface of the base is provided with a rectangular groove at the position corresponding to the rectangular bottom plate of the movable frame, and the rectangular bottom plate is positioned in the rectangular groove.
6. The rock biaxial tension test device of claim 3, wherein: the force transmission piece of the telescopic assembly is a transverse stretching rod, the transverse stretching rod is matched with a sliding rail, one end of the transverse stretching rod is connected with the transverse loading plate, the other end of the transverse stretching rod is connected onto the sliding rail through a sliding groove, and the sliding rail is symmetrically connected to the upper surface of the base corresponding to the central surface of the movable frame rectangular top plate in the length direction.
7. The rock biaxial tension test device of claim 6, wherein: linkage rods are hinged between the two ends of the rectangular top plate of the movable frame and the transverse stretching rods respectively, and the two ends of each linkage rod can rotate around the hinged position.
8. The rock biaxial tension test device of claim 3, wherein: a T-shaped groove is formed in the rectangular bottom plate of the movable frame, the cross section of the lower stretching base plate is I-shaped, and the lower wing plate of the lower stretching base plate is inserted into the T-shaped groove.
9. The rock biaxial tension test device of claim 2, wherein: the upper stretching base plate is a rectangular plate, a screw rod is connected to the center of the upper stretching base plate, and the screw rod penetrates through the horizontal top plate of the fixed frame and then is locked through a nut.
10. A method of using the apparatus of claim 1 to perform biaxial stretching experiments on rock comprising the steps of:
(1) bonding a transverse loading plate to a pair of side walls of a sample, and bonding the sample to the upper surface of a lower tensile base plate;
(2) connecting the lower stretching base plate to the rectangular bottom plate of the movable frame;
(3) lifting the inner frame upwards, and connecting the transverse loading plate with the force transmission assembly;
(4) bonding the sample with the upper stretching base plate;
(5) applying a downward vertical load to the upper end of the movable frame by using a rock shear rheometer until the test sample is broken and destroyed; shooting a crack propagation process in the sample by adopting a front-mounted camera in the loading process, recording real-time load and displacement, and observing and shooting a damaged surface;
(6) analyzing the recorded data after the experiment is finished;
(7) and replacing the sample, repeating the steps and applying different vertical loads to the sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811331108.3A CN109163975B (en) | 2018-11-09 | 2018-11-09 | Rock biaxial tension experimental device and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811331108.3A CN109163975B (en) | 2018-11-09 | 2018-11-09 | Rock biaxial tension experimental device and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109163975A CN109163975A (en) | 2019-01-08 |
| CN109163975B true CN109163975B (en) | 2020-11-06 |
Family
ID=64876797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811331108.3A Active CN109163975B (en) | 2018-11-09 | 2018-11-09 | Rock biaxial tension experimental device and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109163975B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188906B (en) * | 2021-04-25 | 2022-05-20 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN115683800B (en) * | 2022-10-17 | 2024-05-17 | 中南大学 | Multi-functional multi-module rock mechanics test system |
| CN117074168B (en) * | 2023-07-05 | 2024-05-24 | 中国矿业大学(北京) | Surrounding rock deformation experimental device and method for horizontal and vertical linkage mechanics simulation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561376A (en) * | 2008-04-17 | 2009-10-21 | 西北工业大学 | Bidirectional tensile tester |
| CN101907538A (en) * | 2010-07-29 | 2010-12-08 | 哈尔滨工业大学 | Mechanical biaxial tension tester with variable proportion loading |
| CN201926587U (en) * | 2010-11-24 | 2011-08-10 | 大连民族学院 | Loading test device for concrete under proportional loading two-axis pressure |
| KR20120033621A (en) * | 2010-09-30 | 2012-04-09 | 한국전력공사 | Jig structure for panel standard testing |
| CN102706731A (en) * | 2012-06-14 | 2012-10-03 | 河南理工大学 | Biaxial tension test device for testing performance of sheet metal |
| CN105092371A (en) * | 2015-09-14 | 2015-11-25 | 哈尔滨工业大学（威海） | Biaxial drawing clamp with adjustable drawing ratio |
| 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 |
-
2018
- 2018-11-09 CN CN201811331108.3A patent/CN109163975B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561376A (en) * | 2008-04-17 | 2009-10-21 | 西北工业大学 | Bidirectional tensile tester |
| CN101907538A (en) * | 2010-07-29 | 2010-12-08 | 哈尔滨工业大学 | Mechanical biaxial tension tester with variable proportion loading |
| KR20120033621A (en) * | 2010-09-30 | 2012-04-09 | 한국전력공사 | Jig structure for panel standard testing |
| CN201926587U (en) * | 2010-11-24 | 2011-08-10 | 大连民族学院 | Loading test device for concrete under proportional loading two-axis pressure |
| CN102706731A (en) * | 2012-06-14 | 2012-10-03 | 河南理工大学 | Biaxial tension test device for testing performance of sheet metal |
| CN105092371A (en) * | 2015-09-14 | 2015-11-25 | 哈尔滨工业大学（威海） | Biaxial drawing clamp with adjustable drawing ratio |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109163975A (en) | 2019-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109163975B (en) | Rock biaxial tension experimental device and application method thereof | |
| CN107167378B (en) | Axial tension test device and test method thereof | |
| CN106996900B (en) | Axial tension and compression test device under constraint action and test method thereof | |
| CN106198258B (en) | Rock shear strength size effect testing machine | |
| CN206020193U (en) | A kind of disconnected strength test assay device of shear of rock for meeting different size specification | |
| CN103398908A (en) | Steel-concrete composite column anti-seismic anti-torsion test loading device and manufacturing method thereof | |
| CN106370532B (en) | Outdoor environment-tension, compression and bending load coupling test device in alpine climate | |
| CN206515161U (en) | A kind of plate-type ballastless track adhesive property test devices of CRTS III | |
| CN108896400B (en) | Structural test system capable of applying tension-compression-bending shear force | |
| CN109187229B (en) | Stud pull shear test device and test method | |
| CN208636048U (en) | A kind of loading device based on the test of car body quasistatic compression | |
| CN106969978B (en) | Axial tension test device under constraint action and test method thereof | |
| CN104897467A (en) | True-triaxial loading and unloading rock stress relaxation test device and test method | |
| CN205910062U (en) | Utilize true triaxial test machine to realize that two axial tension of rock press experimental device | |
| CN113340747A (en) | Anchor rod shearing testing device and method | |
| CN110186746B (en) | Structure test loading device and test method for keeping lateral direction and axial direction vertical | |
| CN112748000B (en) | Multi-axis testing machine and testing method for testing performance of carbon fiber composite material | |
| CN112345340A (en) | Controllable angle crack surface generation device for cylindrical rock sample | |
| CN211042986U (en) | Material dynamic shear test device | |
| JP4219095B2 (en) | Compression / shear test method and test apparatus | |
| CN201075069Y (en) | Universal material testing machine | |
| CN209911105U (en) | Structural test loading device capable of keeping lateral direction and axial direction vertical | |
| CN205642991U (en) | Dynamic work platform for testing machine | |
| CN203606241U (en) | Horizontal shearing mechanism applied to compression-shear tester | |
| CN113447370B (en) | Integral tensile and shear test system and method for precast concrete sandwich heat-insulating wallboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |