CN206556579U - A kind of experimental provision for being used to test the deformation of rock static(al) - Google Patents
A kind of experimental provision for being used to test the deformation of rock static(al) Download PDFInfo
- Publication number
- CN206556579U CN206556579U CN201621372093.1U CN201621372093U CN206556579U CN 206556579 U CN206556579 U CN 206556579U CN 201621372093 U CN201621372093 U CN 201621372093U CN 206556579 U CN206556579 U CN 206556579U
- Authority
- CN
- China
- Prior art keywords
- measurement bar
- strain measurement
- test
- axial
- radial
- 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
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is related to a kind of experimental provision for being used to test the deformation of rock static(al).Its technical scheme is：The experimental provision is made up of test device and pressure transfering apptss, test device, test specimen (4) and pressure transfering apptss composition test specimen test body.8 axial grooves (14) are equably provided with along the plain line of the big cylinder of base (1), the lower end of radial strain measurement bar (5) and axial strain measurement bar (7) is separately fixed at that corresponding axial groove (14) is inner by screw (2), and radial strain measurement bar (5) and axial strain measurement bar (7) distribute alternately；Major part screw rod (6) and the upper end of radial strain measurement bar (5) are connected through a screw thread, each radial strain measurement bar (5) and each axial strain measurement bar (7) post resistance strain gage (3) respectively, and each resistance strain gage (3) passes through respective signal wire (11) external deformeter or computer.Gland (8) and pressure head (9) threaded connection, the upper plane of pressure head (9) are pasted with rubber blanket (10).The utility model has the characteristics of installation and debugging are convenient, measurement error is small.
Description
Technical field
The utility model belongs to the test device technical field of low-intensity test specimen.It is specifically related to a kind of quiet for testing rock
The experimental provision of force deformation.
Background technology
When carrying out material properties of rock testing experiment, it is necessary to measure the change of test specimen in process of the test by experimental provision
Radial strain and axial strain during shape, measurement test piece deformation, with the mechanical property parameters of calculation testing piece.Existing experiment
Device, though deformation test specimen radial strain and axial strain can be measured simultaneously, is still suffered from as follows during test specimen applied voltage test
Problem：
1st, pressure head is fixed using the mode of screw horizontal clamping when carrying out the installation and debugging of axial strain measurement to test specimen
With the relative position of gland, operating process is cumbersome time-consuming, and when being fixed using screw horizontal clamping, in fact it could happen that because screw is not pressed from both sides
Tightly cause gland under effect of weight along pressure head Axisal movement, and then the error increase for causing axial strain to measure.
2nd, in the static(al) deformation test for carrying out low-intensity test specimen, when measuring test specimen radial strain, screw end head is utilized
Contacted with test specimen side point, test specimen side, by point loading, is easily caused in deformation process in low-intensity test specimen radial deformation
During screw rod insertion test specimen, and then cause radial strain measure error increase.
The content of the invention
The utility model is intended to overcome prior art defect, it is therefore an objective to provide a kind of installation and debugging convenience, measurement error small
Be used for test rock static(al) deformation experimental provision.
To achieve the above object, the technical solution adopted in the utility model is：It is described to be used to test the deformation of rock static(al)
Experimental provision is made up of test device and pressure transfering apptss；When testing test specimen, test specimen is placed in test device, pressure transfering apptss are placed
On test specimen, test device, test specimen and pressure transfering apptss composition test specimen test body.
Test device includes base, resistance strain gage, radial strain measurement bar, major part screw rod and axial strain measurement bar.
The round boss that base is made up of big cylinder and small cylinder, a diameter of test specimen diameter of small cylinder
1.05 ~ 1.10 times, the diameter of big cylinder is 1.80 ~ 1.90 times of small cylinder diameter；It is provided with the upper plane of big cylinder
Annular groove, the ring surface outside annular groove is equably provided with 8 radial slots, and 8 axles are equably provided with along the plain line of big cylinder
To groove, each radial slot is communicated with corresponding axial groove, and annular groove outer wall is provided with manhole.
The lower end of radial strain measurement bar and the lower end of axial strain measurement bar are fixed by screws in corresponding axle respectively
Into groove, radial strain measurement bar and axial strain measurement bar distribute alternately；Major part screw rod and the upper end of radial strain measurement bar
It is connected through a screw thread, the axis extended line of each major part screw rod and the axis extended line of base are vertically intersected on a bit.
Each radial strain measurement bar and each axial strain measurement bar post resistance strain gage, each resistance-strain respectively
Piece passes through the external deformeter of respective signal wire or computer；It is described external to refer to each signal wire along respective rod member and right
In the radial slot insertion annular groove answered, then passed by the manhole of annular groove, then the deformeter or meter with outside respectively
Calculation machine is connected.
Pressure transfering apptss are made up of gland, pressure head and rubber blanket；Gland and pressure head threaded connection, the upper plane of pressure head are pasted with
Rubber blanket.
The profile of gland is inverted round stage, and the angle of inverted round stage is 45 °, and the center of inverted round stage is provided with tapped through hole, inverted round stage
Upper bottom diameter be 1.25 ~ 1.30 times of big cylinder diameter of base.
The pressure head is cylinder, and the hypomere of cylinder is provided with external screw thread, the diameter of the cylinder and the roundlet of base
The diameter of cylinder is equal.
The length of the axial strain measurement bar is equal to substructure height, height of specimen and gland height sum, axial strain
The cross section of measurement bar is rectangle, and the width of the rectangle is identical with the nominal size of the axial groove depth of base, the rectangle
Length it is identical with the nominal size of the axial well width of base.
The length of the radial strain measurement bar is 0.55 times of sum of substructure height and height of specimen；Radial strain is measured
The upper end of bar is provided with screw, and the cross section of radial strain measurement bar is identical with the cross section of axial strain measurement bar.
The section of described major part screw rod one end is square, and the major part screw rod other end is segment, and the shaft of major part screw rod is
External screw thread；The radius of curvature of the segment sphere is 0.18 ~ 0.20 times of the small cylinder radius of base, the bottom surface radius of segment
For 0.75 ~ 0.80 times of the sphere curvature radius of segment.
It is described be used to test the deformation of rock static(al) the application method of experimental provision be：
(1) test specimen material is rock or concrete material, and the size of test specimen is 50 × 100mm of Φ.
(2) test specimen is placed on base, gland is threaded to the top of pressure head, then pressure head is placed on test specimen；Base center
Line, test specimen center line and pressure head center line are same straight line, constitute test specimen test body.
(3) turn-knob major part screw rod one by one, the segment curved surface of each major part screw rod is close to the side of test specimen；Turn-knob gland is extremely pressed
The side of lid is in contact with axial strain measurement bar top；School zero is carried out again.
(4) the test specimen test body after high-ranking officers zero is placed between the top board of testing machine and lower platen；By each resistance
Foil gauge distinguishes external deformeter or computer by respective signal wire.
(5) pressurize, until test specimen is cracked；Stop pressurization, check test specimen collapse state, preserve test result.
The utility model is in pressure process, due to the compression of test specimen, when the upper plane of pressure head and gland with test specimen
When moving down, gland applies pressure to axial strain measurement bar top, and axial strain measurement bar deforms；Meanwhile, test specimen by
The radial deformation produced during compressive strain, also applies outside pressure to major part screw rod, and major part screw rod reaches pressure radially
Strain measurement bar, radial strain measurement bar produces flexural deformation.The deformation of radial strain measurement bar and axial strain measurement bar makes
Resistance strain gage produces corresponding current signal, and the signal wire that current signal is connected by resistance strain gage is output to deformeter or meter
Calculation machine is amplified calculating, produces the radial strain value and axial strain value of test specimen.
Due to using above-mentioned technical proposal, the utility model has following good effect compared with prior art：
1st, the utility model is coordinated using the screw thread of pressure head and gland, makes installation and debugging fast and easy during measurement；Using
Thread fiting mode avoid gland under Gravitative Loads along pressure head axial slip, eliminate in the loading procedure of test specimen press
The measurement error that lid sliding is produced to the additional duty that axial strain measurement bar top applies.
2nd, the characteristics of the utility model is contacted by side using the segment sphere and test specimen of major part screw rod, it is therefore prevented that low strong
Major part screw rod injects test specimen when spending the static mechanical performance test of test specimen, the measurement error for reducing therefore producing.
Therefore, the characteristics of the utility model has installation and debugging convenience and small measurement error.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
Fig. 2 is the schematic top plan view of base 1 in Fig. 1；
Fig. 3 is the structure enlarged diagram of major part screw rod 6 in Fig. 1.
Embodiment
The utility model is described further with reference to the accompanying drawings and detailed description, not the utility model protected
Protect the restriction of scope.
Embodiment 1
A kind of experimental provision for being used to test the deformation of rock static(al).As shown in figure 1, described be used to test the deformation of rock static(al)
Experimental provision be made up of test device and pressure transfering apptss.When testing test specimen 4, test specimen 4 is placed in test device, pressure transfering apptss
It is placed on test specimen 4, test device, test specimen 4 and pressure transfering apptss composition test specimen test body.
As shown in figure 1, test device includes base 1, resistance strain gage 3, radial strain measurement bar 5, major part screw rod 6 and axle
To strain measurement bar 7.
As shown in Fig. 2 the round boss that base 1 is made up of big cylinder and small cylinder, small cylinder it is a diameter of
1.05 ~ 1.08 times of the diameter of test specimen 4, the diameter of big cylinder is 1.80 ~ 1.85 times of small cylinder diameter；In big cylinder
Upper plane is provided with annular groove 12, and the ring surface outside annular groove 12 is equably provided with 8 radial slots 13, along the plain line of big cylinder
8 axial grooves 14 are equably provided with, each radial slot 13 is communicated with corresponding axial groove 14, the outer wall of annular groove 12 is provided with circular logical
Hole 15.
As shown in figure 1, the lower end of radial strain measurement bar 5 and the lower end of axial strain measurement bar 7 are solid by screw 2 respectively
It is scheduled in corresponding axial groove 14, radial strain measurement bar 5 and axial strain measurement bar 7 distribute alternately；Major part screw rod 6 and radial direction
The upper end of strain measurement bar 5 is connected through a screw thread, and the axis extended line of each major part screw rod 6 and the axis extended line of base 1 hang down
Directly intersect at a point.
As shown in figure 1, each radial strain measurement bar 5 and each axial strain measurement bar 7 post resistance strain gage respectively
3, each resistance strain gage 3 passes through the external deformeter of respective signal wire 11 or computer.It is described external to refer to each signal
Line 11 is embedded in annular groove 12 along respective rod member and corresponding radial slot 13, is then worn by the manhole 15 of annular groove 12
Go out, then be connected respectively with outside deformeter or computer.
As shown in figure 1, pressure transfering apptss are made up of gland 8, pressure head 9 and rubber blanket 10；Gland 8 and pressure head 9 are threadedly coupled, pressure
First 9 upper plane is pasted with rubber blanket 10.
As shown in figure 1, the profile of gland 8 is inverted round stage, the angle of inverted round stage is 45 °, and the center of inverted round stage is provided with screw thread
Through hole, the upper bottom diameter of inverted round stage is 1.25 ~ 1.28 times of the big cylinder diameter of base 1.
As shown in figure 1, the pressure head 9 is cylinder, the hypomere of cylinder is provided with external screw thread, the diameter of the cylinder with
The diameter of the small cylinder of base 1 is equal.
As shown in figure 1, the length of the axial strain measurement bar 7 is equal to the height of base 1, the height of test specimen 4 and the height of gland 8
Sum, the cross section of axial strain measurement bar 7 is rectangle, the width of the rectangle and the name of the depth of axial groove 14 of base 1
Size is identical, and the length of the rectangle is identical with the nominal size of the width of axial groove 14 of base 1.
As shown in figure 1, the length of the radial strain measurement bar 5 be 0.55 times of the height of base 1 and the height of test specimen 4 it
With；The upper end of radial strain measurement bar 5 is provided with screw, the cross section of radial strain measurement bar 5 and the horizontal stroke of axial strain measurement bar 7
Section is identical.
As shown in figure 3, the section of described one end of major part screw rod 6 is square, the other end of major part screw rod 6 is segment, major part
The shaft of screw rod 6 is external screw thread；The radius of curvature of the segment sphere is 0.18 ~ 0.19 times of the small cylinder radius of base 1,
The bottom surface radius of segment is 0.75 ~ 0.78 times of the sphere curvature radius of segment.
It is described be used to test the deformation of rock static(al) the application method of experimental provision be：
(1) material of test specimen 4 is rock or concrete material, and the size of test specimen 4 is 50 × 100mm of Φ.
(2) test specimen 4 is placed on base 1, gland 8 is threaded to the top of pressure head 9, then pressure head 9 is placed on test specimen 4；Bottom
1 center line of seat, the center line of test specimen 4 and the center line of pressure head 9 are same straight line, constitute test specimen test body.
(3) turn-knob major part screw rod 6 one by one, the segment curved surface of each major part screw rod 6 is close to the side of test specimen 4；Turn-knob gland 8
It is in contact to the side of gland 8 with the top of axial strain measurement bar 7；School zero is carried out again.
(4) the test specimen test body after high-ranking officers zero is placed between the top board of testing machine and lower platen；By each resistance
Foil gauge 3 distinguishes external deformeter or computer by respective signal wire 11.
(5) pressurize, until test specimen 4 is cracked；Stop pressurization, check the collapse state of test specimen 4, preserve test result.
Embodiment 2
A kind of experimental provision for being used to test the deformation of rock static(al).In addition to following technical parameters, remaining be the same as Example 1：
1.07 ~ 1.10 times of the diameter of a diameter of test specimen 4 of the small cylinder, the diameter of big cylinder is that small cylinder is straight
1.85 ~ 1.90 times of footpath；
The upper bottom diameter of the inverted round stage is 1.27 ~ 1.30 times of the big cylinder diameter of base 1；
The radius of curvature of the segment sphere is 0.19 ~ 0.20 times of the small cylinder radius of base 1, the bottom surface half of segment
Footpath is 0.77 ~ 0.80 times of the sphere curvature radius of segment.
Present embodiment is in pressure process, due to the compression of test specimen 4, when pressure head 9 and gland 8 are with test specimen 4
Upper plane when moving down, gland 8 applies pressure to the top of axial strain measurement bar 7, and axial strain measurement bar 7 deforms；Together
When, the radial deformation that test specimen 4 is produced during compressive deformation also applies outside pressure, major part screw rod 6 to major part screw rod 6
Pressure is reached into radial strain measurement bar 5, radial strain measurement bar 5 produces flexural deformation.Radial strain measurement bar 5 and axial direction should
Becoming the deformation of measurement bar 7 makes resistance strain gage 3 produce corresponding current signal, the letter that current signal is connected by resistance strain gage 3
Number line 11 is output to deformeter or computer is amplified calculating, produces the radial strain value and axial strain value of test specimen 4.
Due to using above-mentioned technical proposal, present embodiment has following good effect compared with prior art：
1st, present embodiment is coordinated using the screw thread of pressure head 9 and gland 8, facilitates installation and debugging during measurement fast
Speed；The thread fiting mode of use avoids gland 8 under Gravitative Loads along the axial slip of pressure head 9, eliminates adding in test specimen 4
Gland 8 slides the measurement error produced to the additional duty that the top of axial strain measurement bar 7 applies during load.
2nd, the characteristics of present embodiment is contacted by side using the segment sphere and test specimen 4 of major part screw rod 6, it is therefore prevented that
In the static mechanical performance test of low-intensity test specimen, major part screw rod 6 injects test specimen 4, the measurement error for reducing therefore producing.
Therefore, the characteristics of present embodiment has installation and debugging convenience and small measurement error.
Claims (5)
1. a kind of experimental provision for being used to test the deformation of rock static(al), it is characterised in that described to be used to test the deformation of rock static(al)
Experimental provision is made up of test device and pressure transfering apptss；
Test device includes base (1), resistance strain gage (3), radial strain measurement bar (5), major part screw rod (6) and axial strain
Measurement bar (7)；
The round boss that base (1) is made up of big cylinder and small cylinder, a diameter of test specimen (4) diameter of small cylinder
1.05~1.10 times, the diameter of big cylinder is 1.80~1.90 times of small cylinder diameter；Opened in the upper plane of big cylinder
There is annular groove (12), 8 radial slots (13) are equably provided with the ring surface of annular groove (12) outside, it is equal along the plain line of big cylinder
8 axial grooves (14) are provided with evenly, and each radial slot (13) is communicated with corresponding axial groove (14), and annular groove (12) outer wall is provided with
Manhole (15)；
The lower end of radial strain measurement bar (5) and the lower end of axial strain measurement bar (7) are fixed on correspondence by screw (2) respectively
Axial groove (14) it is inner, radial strain measurement bar (5) and axial strain measurement bar (7) distribute alternately；Major part screw rod (6) and radial direction
The upper end of strain measurement bar (5) is connected through a screw thread, and the axis extended line of each major part screw rod (6) and the axis of base (1) prolong
Long line is vertically intersected on a bit；
Each radial strain measurement bar (5) and each axial strain measurement bar (7) post resistance strain gage (3), Mei Ge electricity respectively
Resistance foil gauge (3) passes through respective signal wire (11) external deformeter or computer；
Pressure transfering apptss are made up of gland (8), pressure head (9) and rubber blanket (10)；Gland (8) and pressure head (9) threaded connection, pressure head
(9) upper plane is pasted with rubber blanket (10)；
The profile of gland (8) is inverted round stage, and the angle of inverted round stage is 45 °, and the center of inverted round stage is provided with tapped through hole, inverted round stage
Upper bottom diameter is 1.25~1.30 times of the big cylinder diameter of base (1).
2. the experimental provision according to claim 1 for being used to test the deformation of rock static(al), it is characterised in that the pressure head (9)
For cylinder, the hypomere of cylinder is provided with external screw thread, the diameter phase of the diameter and the small cylinder of base (1) of the cylinder
Deng.
3. the experimental provision according to claim 1 for being used to test the deformation of rock static(al), it is characterised in that the axial direction should
Become measurement bar (7) length be equal to base (1) height, test specimen (4) highly with gland (8) height sum, axial strain measurement bar
(7) cross section is rectangle, and the width of the rectangle is identical with the nominal size of axial groove (14) depth of base (1), described
The length of rectangle is identical with the nominal size of axial groove (14) width of base (1).
4. the experimental provision according to claim 1 for being used to test the deformation of rock static(al), it is characterised in that the radial direction should
Become 0.55 times sum of the length of measurement bar (5) into base (1) highly with test specimen (4) height；Radial strain measurement bar (5) it is upper
End is provided with screw, and the cross section of radial strain measurement bar (5) is identical with the cross section of axial strain measurement bar (7).
5. the experimental provision according to claim 1 for being used to test the deformation of rock static(al), it is characterised in that the major part spiral shell
The section of bar (6) one end is square, and major part screw rod (6) other end is segment, and the shaft of major part screw rod (6) is external screw thread；Institute
It is 0.18~0.20 times of the small cylinder radius of base (1) to state the radius of curvature of segment sphere, and the bottom surface radius of segment is ball
0.75~0.80 times of scarce sphere curvature radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372093.1U CN206556579U (en) | 2016-12-14 | 2016-12-14 | A kind of experimental provision for being used to test the deformation of rock static(al) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372093.1U CN206556579U (en) | 2016-12-14 | 2016-12-14 | A kind of experimental provision for being used to test the deformation of rock static(al) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206556579U true CN206556579U (en) | 2017-10-13 |
Family
ID=60369942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621372093.1U Active CN206556579U (en) | 2016-12-14 | 2016-12-14 | A kind of experimental provision for being used to test the deformation of rock static(al) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206556579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525590A (en) * | 2016-12-14 | 2017-03-22 | 武汉科技大学 | Static deformation experiment device for testing low-strength test piece |
-
2016
- 2016-12-14 CN CN201621372093.1U patent/CN206556579U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525590A (en) * | 2016-12-14 | 2017-03-22 | 武汉科技大学 | Static deformation experiment device for testing low-strength test piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106525590A (en) | Static deformation experiment device for testing low-strength test piece | |
| CN104677745A (en) | Concrete lever type tension-compression creep device provided with static pulley | |
| CN106124313B (en) | Concrete and similar material are by the test device for depressing comprehensive deformation performance | |
| WO2012071761A1 (en) | Accurate measuring and metering method and device via liquid level variable of hydraulic container or oil cylinder | |
| CN105606452B (en) | The power rod member outfield load calibration of aircraft two/strength test portable unit | |
| CN202471397U (en) | Elastic support parts flexibility tester | |
| CN202631244U (en) | Specific pressure numerical value tester for packing seal of valve | |
| CN203949656U (en) | A kind of cylinder specimen radial deformation measurement mechanism | |
| CN206556579U (en) | A kind of experimental provision for being used to test the deformation of rock static(al) | |
| CN204344920U (en) | Bellows encapsulates termination and uses its cement-based material self contraction testing apparatus | |
| CN101813575B (en) | Bending resistance test device for valve | |
| CN203350129U (en) | Polymer environment stress cracking experiment combined device | |
| CN207007132U (en) | One kind is used for brush cover bearing height automatic detection device | |
| CN206583610U (en) | A kind of experimental bench for being used to test aerostatic bearing static characteristic | |
| CN203687865U (en) | Radial displacement measuring device used for cylindrical standard rock specimen | |
| CN104296980A (en) | Device and method for testing normal static stiffness characteristics of joint surfaces of shim plate, foundation and foundation bolt of heavy-duty machine tool | |
| CN104480977A (en) | Anti-lift load testing device for rock anchorage bar foundation | |
| CN202676555U (en) | Creep testing machine | |
| CN203869950U (en) | Device for testing changes of mechanical properties of epoxy resin in filling type anchorage device | |
| CN102798371B (en) | Rock volume deformation measuring sensor and rock test-piece volume deformation measuring method | |
| CN202562398U (en) | Portable detection gauge | |
| CN205049465U (en) | Simple and easy survey concrete and device of steel bar anchoring bearing capacity | |
| CN207528434U (en) | A kind of Automobile flanges axis processing pressure resistant testing device | |
| CN209215108U (en) | A kind of rock sample transversely deforming measuring device | |
| CN208488346U (en) | A kind of shearing performance test device of magnetic rheology elastic body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |