CN208187945U - A kind of loading device for bond-slip properties test - Google Patents
A kind of loading device for bond-slip properties test Download PDFInfo
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- CN208187945U CN208187945U CN201820864866.0U CN201820864866U CN208187945U CN 208187945 U CN208187945 U CN 208187945U CN 201820864866 U CN201820864866 U CN 201820864866U CN 208187945 U CN208187945 U CN 208187945U
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- support plate
- installation
- hole
- flexural pivot
- bond
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Abstract
The utility model discloses a kind of loading devices for bond-slip properties test, comprising: loading frame；Loading frame includes supporting leg, the first support plate, the second support plate and third support plate；First support plate, the second support plate and third support plate are successively fixed on supporting leg；Coaxial installation through-hole is offered in first support plate, the second support plate and third support plate；Punching flexural pivot is fixedly installed in first support plate, the centre bore of punching flexural pivot and the installation through-hole in the first support plate are coaxial；It is provided with the flexural pivot connecting rod of flexural pivot in the installation through-hole of third support plate, can be connected with the collet of testing machine by flexural pivot connecting rod.The loading device for bond-slip properties test of the utility model passes through from moment of flexure release is able to carry out in, and the accuracy of bond-slip properties test can be improved.
Description
Technical field
The utility model belongs to technical field of civil engineering or reinforcing bar and concrete binding slip property experimental study technology
Field, in particular to a kind of loading device for bond-slip properties test.
Background technique
Reinforcing bar can be worked together with concrete structure, can play the advantage of respective material, it is important to lean on reinforcing bar and coagulation
Cementation between soil, the method for measuring the cohesive force of reinforcing bar and concrete in practice generally use " concrete structure examination
Test method standard " in the cube center that is recommended to use extract test specimen.
For existing grip of testing machine, generally require to meet test machine clamping test specimen by experiment loading unit
Requirement, usually concrete center be embedded to reinforcing bar, be further applied load in one end of reinforcing bar, to measure reinforcing bar and concrete binding
Bond stress and Relative sliding in energy.Existing experiment loading unit is generally existing generate when cannot discharge load connection it is curved
The problem of square, will lead to bond-slip properties test accuracy reduces；And existing loading device passes through loading device mostly
Frame carries out Indirect Loaded, and the intermediate loss of Indirect Loaded can reduce loading accuracy.
Utility model content
It is above-mentioned to solve the purpose of this utility model is to provide a kind of loading device for bond-slip properties test
?.The loading device for bond-slip properties test of the utility model passes through curved from being able to carry out in
Square release, can be improved the accuracy of bond-slip properties test.
In order to achieve the above objectives, the utility model uses following technical scheme:
A kind of loading device for bond-slip properties test, comprising: loading frame；Loading frame includes supporting leg,
One support plate, the second support plate and third support plate；First support plate, the second support plate and third support plate are successively fixedly installed
On supporting leg；Coaxial installation through-hole is offered in first support plate, the second support plate and third support plate；In first support plate
It is fixedly installed punching flexural pivot, the centre bore of punching flexural pivot and the installation through-hole in the first support plate are coaxial, and punching flexural pivot is located at
Between first support plate and the second support plate, the centre bore that the reinforcing bar of test specimen upper end can pass through punching flexural pivot enters the first support
Installation through-hole on plate, the reinforcing bar of test specimen lower end are able to enter the installation through-hole of the second support plate；The installation of third support plate is logical
It is provided with the flexural pivot connecting rod of flexural pivot in hole, can be connected with the collet of testing machine by flexural pivot connecting rod.
Further, the lower end of punching flexural pivot is provided with caging bolt, and caging bolt is used to carry out the concrete of test specimen
Circumferential limit.
Further, local reinforcing plate is provided at the installation through-hole of third support plate.
Further, the first support plate and the ipsilateral of the second support plate are respectively arranged with gap, and gap passes through first respectively
Installation through-hole in support plate and the second support plate.
Further, supporting leg includes 4 screw rods；4 screw rods by nut and gasket respectively with the first support plate, second
Fagging is connected with third support plate.
Further, the lower end of the centre bore of punching flexural pivot is equipped with first support, and first is equipped in first support
Move meter.
Further, second support is installed at the installation through-hole of the second support plate, second is installed in second support
Move meter.
It further, further include test specimen and testing machine；Test specimen includes reinforcing bar and concrete, in reinforcing bar Transducers Embedded in Concrete, steel
Concrete is stretched out at the both ends of muscle, and the upper end of reinforcing bar is pierced by the centre bore of punching flexural pivot and installation through-hole and the examination of the first support plate
The upper jaw for testing machine is fixedly connected, and the lower end of reinforcing bar is protruded into the installation through-hole of the second support plate, the lower jaw of testing machine
It is fixedly connected with the flexural pivot connecting rod of third support plate.
Compared with prior art, the utility model has the advantage that
The loading device for bond-slip properties test of the utility model, test specimen to be loaded are placed on the first support plate
And second between support plate, the reinforcing bar of test specimen upper end protrude into the centre bore of punching flexural pivot and be pierced by the first support plate installation it is logical
Hole, the reinforcing bar of test specimen lower end protrude into the installation through-hole of the second support plate, and flexural pivot company is equipped in the installation through-hole of third support plate
Bar, the same shaft assignment of the installation through-hole of the first support plate, the second support plate and third support plate, by adjusting punching flexural pivot and flexural pivot
Connecting rod can make the collet centering of the reinforcing bar and testing machine of test specimen to be loaded, can discharge the moment of flexure generated due to bias, can mention
The accuracy of height load, improves the precision and reliability of test.And the more traditional loading device of this experiment loading unit is trying
In part stress more directly, reduce the loss that testing machine is further applied load to test specimen by loading device, keep test specimen stress more direct.
Further, centering can effectively be adjusted by caging bolt, prevents from generating due to test specimen bias in load attached
Add moment of flexure.
Further, by the way that local reinforcing plate is arranged at the installation through-hole of third support plate, can enhance at installation through-hole
Intensity, avoid third support plate deformed in load the reinforcing bar for influencing test specimen and test machine grip holder to neutrality, further protect
Demonstrate,prove the accuracy of load.
Further, the first support plate, punching flexural pivot and the ipsilateral of the second support plate are provided with gap, can by gap
Test specimen is more easily put into loading device, is easily installed, loading efficiency can be improved.
Further, supporting leg uses screw rod, and threaded connection hole is begun in each support plate, and screw rod passes through nut and pad
Piece is connected with threaded connection hole, is easily installed, and is also convenient for adjusting the distance between each support plate according to actual needs, can mention
The scope of application of high loading device.
Further, the first displacement meter is used to measure the relative displacement between load end bar and concrete.
Further, second displacement meter is used to measure the relative displacement between free end bar and concrete.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of loading device for bond-slip properties test of the utility model；
Fig. 2 is the overlooking structure diagram of Fig. 1；
Fig. 3 is the overlooking structure diagram of the first support plate in Fig. 1；
Fig. 4 is the positive structure diagram of the punching flexural pivot in Fig. 1；
Fig. 5 is the overlooking structure diagram of Fig. 4；
Fig. 6 is the overlooking structure diagram of the second support plate in Fig. 1；
Fig. 7 is the positive structure diagram of the local reinforcing plate in Fig. 1；
Fig. 8 is the overlooking structure diagram of Fig. 7；
Fig. 9 is the overlooking structure diagram of the third support plate in Fig. 1；
Figure 10 is the positive structure diagram of flexural pivot connecting rod in Fig. 1；
Figure 11 is the overlooking structure diagram of Figure 10；
Figure 12 is the configuration schematic diagram that flexural pivot connecting rod, local reinforcing plate are connected with third support plate；
Fig. 1 is into Figure 12,1-reinforcing bar, 2-screw rods, 3-nuts, the 4-the first support plate, 5-connection bolts, 6-punchings
Flexural pivot, 7-caging bolts, the 8-the first displacement meter, 9-concrete test blocks, the 10-the second support plate, 11-second displacement meters,
12-local reinforcing plates, 13-third support plates, 14-flexural pivot connecting rods.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Referring to figs. 1 to Figure 12, a kind of loading device for bond-slip properties test of the utility model, comprising: add
Carry frame, test specimen and testing machine.
Loading frame includes supporting leg, the first support plate 4, the second support plate 10 and third support plate 13, the first support plate 4,
Second support plate 10 and third support plate 13 are successively fixed on supporting leg；Supporting leg is 4 screw rods 2, and three support plates are
Rectangular steel plates, the quadrangle of three support plates, which nearby respectively corresponds, offers coaxial threaded mounting hole, and screw rod 2 is separately mounted to spiral shell
It is fixedly connected in line mounting hole and by nut 3 and gasket, using screw rod 2 as supporting leg convenient for according to the length tune of test specimen
The spacing between the first support plate 4 and the second support plate 10 is saved, convenient for operation, helps to improve the scope of application of loading device.
Coaxial installation through-hole is offered in first support plate 4, the second support plate 10 and third support plate 13；The peace of first support plate 4
Dress through hole is fixedly installed punching flexural pivot 6, and the centre bore of punching flexural pivot 6 and the installation through-hole in the first support plate 4 are coaxial, wear
Bulbus cordis hinge 6 is between the first support plate 4 and the second support plate 10, by the release of punching flexural pivot 6 due to the moment of flexure of bias generation；
Specially 6 top of punching flexural pivot is connect by connecting bolt 5 with the first support plate 4, and lower part is across reinforcing bar 1, the pass-out always of reinforcing bar 1
The top of punching flexural pivot 6, reinforcing bar 1 pass through male and female face center；When reinforcing bar 1 is connected with the upper jaw of testing machine, connecting line is non-flat
When 1 axis of reinforcing bar, through the reinforcing bar 1 of the adjustable test specimen of punching flexural pivot 6 minor rotation occurs for row, and punching flexural pivot 6 can rise
The effect that centering is adjusted to test specimen can discharge the moment of flexure of eccentric generation, improve loading accuracy.The reinforcing bar 1 of test specimen upper end can
Enter the installation through-hole in the first support plate 4 across the centre bore of punching flexural pivot 6, the reinforcing bar 1 of test specimen lower end is able to enter second
The installation through-hole of support plate 10, the bottom of the concrete test block 9 of test specimen are shelved in the second support plate 10, and the second support plate 10 is put
Set 1 concrete binding test specimen of reinforcing bar；The lower end of punching flexural pivot 6 is provided with caging bolt 7, and caging bolt 7 is used to try concrete
Block 9 carries out circumferential limit, prevent during loading concrete test block 9 circumferential movement occurs.First support plate 4 and the second support
The ipsilateral of plate 10 is respectively arranged with gap, and gap passes through the installation through-hole in the first support plate 4 and the second support plate 10 respectively, examination
The reinforcing bar 1 of part can be directly placed into from opening position, convenient for the placement of test specimen.The lower end of the centre bore of punching flexural pivot 6 connects with test specimen
Synapsis is equipped with first support, and the first displacement meter 8 is equipped in first support.It is equipped at the installation through-hole of second support plate 10
Second support is equipped with second displacement meter 11 in second support.Pacify at punching flexural pivot 6 and the installation through-hole of the second support plate 10
Displacement meter is filled, can measure the Relative sliding of free end and loading end, easy for installation, test specimen facilitates operation.
The flexural pivot connecting rod 14 of flexural pivot is provided in the installation through-hole of third support plate 13, it can be with by flexural pivot connecting rod 14
The collet of testing machine is connected, and minor rotation can occur between flexural pivot connecting rod 14 and the installation through-hole of third support plate 13, such as
Fruit flexural pivot connecting rod 14 and test machine grip holder are non-parallel, will be between flexural pivot and flexural pivot connecting rod 14 and the installation through-hole of third support plate 13
Progress minor rotation can discharge non-be centered in and load generated moment of flexure on equipment, and flexural pivot connecting rod 14 can play adjusting centering
Discharge the effect of moment of flexure.Local reinforcing plate 12 is provided at the installation through-hole of third support plate 13, local reinforcing plate 12 can add
Intensity at the installation through-hole of strong third support plate 13, avoids third support plate 13 from deforming during loading.
Test specimen includes reinforcing bar 1 and concrete test block 9, and in 1 Transducers Embedded in Concrete test block 9 of reinforcing bar, the both ends of reinforcing bar 1 are stretched out mixed
Solidifying soil test block 9, the upper end of reinforcing bar 1 are pierced by the upper of the centre bore of punching flexural pivot 6 and the installation through-hole of the first support plate 4 and testing machine
Portion's collet is fixedly connected, and the lower end of reinforcing bar 1 is protruded into the installation through-hole of the second support plate 10, the lower jaw and third of testing machine
The flexural pivot connecting rod 14 of support plate 13 is fixedly connected.
A kind of loading method for bond-slip properties test, is walked based on above-mentioned loading device, including in detail below
It is rapid:
Step 1, three pieces of support plates and screw rod 2 are effectively connected into loading frame, punching flexural pivot 6 by nut 3 and gasket
Top is connected with the first support plate 4 by connecting bolt 5；
Step 2, test specimen to be loaded is placed between the first support plate 4 and the second support plate 10, the reinforcing bar 1 of test specimen upper end
The upper jaw of the installation through-hole and testing machine that protrude into the centre bore of punching flexural pivot 6 and be pierced by the first support plate 4 connects, under test specimen
The reinforcing bar 1 at end protrudes into the mounting hole of the second support plate 10；
Step 3, the flexural pivot connecting rod 14 installed in third support plate 13 is connect with the lower jaw of testing machine；
Step 4, adjusting punching flexural pivot 6 and flexural pivot connecting rod 14 makes the reinforcing bar 1 of test specimen and the upper jaw of testing machine and lower part
Collet centering avoids generating eccentric；
Step 5, the first displacement meter 8 is installed between punching flexural pivot 6 and the concrete test block 9 of test specimen, in the second support plate
Second displacement meter 11 is installed between 10 and the concrete test block 9 of test specimen, and adjusts corresponding position until meeting test measurement
It is required that；
Step 6, start testing machine, loaded, including testing machine load is zeroed, eliminate loading device, test specimen and position
Move the weight of the devices such as meter.
Step 7, loading procedure carries out bond-slip test according to code requirement.
The loading method of the utility model can be used for the load of bond-slip properties test, and it is convenient to operate, and loading efficiency is high,
It is higher to neutrality can to ensure that test specimen reinforcing bar and test machine grip holder have using the loading method of the loading device of the utility model,
The releasable eccentric moment of flexure generated, load accuracy are higher.
Claims (8)
1. a kind of loading device for bond-slip properties test characterized by comprising loading frame；
Loading frame includes supporting leg, the first support plate (4), the second support plate (10) and third support plate (13)；First support plate
(4), the second support plate (10) and third support plate (13) are successively fixed on supporting leg；First support plate (4), the second support
Coaxial installation through-hole is offered in plate (10) and third support plate (13)；First support plate is fixedly installed Perforative ball on (4)
It cuts with scissors (6), the centre bore and the installation through-hole on the first support plate (4) of punching flexural pivot (6) are coaxial, and punching flexural pivot (6) is located at first
Between support plate (4) and the second support plate (10), the reinforcing bar (1) of test specimen upper end can pass through the centre bore of punching flexural pivot (6) into
Enter the installation through-hole on the first support plate (4), the installation that the reinforcing bar (1) of test specimen lower end is able to enter the second support plate (10) is logical
Hole；The flexural pivot connecting rod (14) of flexural pivot is provided in the installation through-hole of third support plate (13), it can by flexural pivot connecting rod (14)
It is connected with the collet of testing machine.
2. a kind of loading device for bond-slip properties test according to claim 1, which is characterized in that Perforative ball
The lower end of hinge (6) is provided with caging bolt (7), and caging bolt (7) is used to carry out concrete test block (9) circumferential limit.
3. a kind of loading device for bond-slip properties test according to claim 1, which is characterized in that third branch
Local reinforcing plate (12) are provided at the installation through-hole of fagging (13).
4. a kind of loading device for bond-slip properties test according to claim 1, which is characterized in that first
Fagging (4) and the ipsilateral of the second support plate (10) are respectively arranged with gap, and gap passes through the first support plate (4) and second respectively
Installation through-hole on fagging (10).
5. a kind of loading device for bond-slip properties test according to claim 1, which is characterized in that supporting leg packet
Include 4 screw rods (2)；4 screw rods (2) by nut (3) and gasket respectively with the first support plate (4), the second support plate (10) and
Third support plate (13) is fixedly connected.
6. a kind of loading device for bond-slip properties test according to claim 1, which is characterized in that Perforative ball
The lower end for cutting with scissors the centre bore of (6) is equipped with first support, and the first displacement meter (8) are equipped in first support.
7. a kind of loading device for bond-slip properties test according to claim 1, which is characterized in that second
Second support is installed at the installation through-hole of fagging (10), second displacement meter (11) are installed in second support.
8. a kind of loading device for bond-slip properties test according to claim 1, which is characterized in that further include
Test specimen and testing machine；Test specimen includes reinforcing bar (1) and concrete test block (9), in reinforcing bar (1) Transducers Embedded in Concrete test block (9), reinforcing bar
(1) both ends are stretched out concrete test block (9), and the upper end of reinforcing bar (1) is pierced by the centre bore and the first support plate of punching flexural pivot (6)
(4) installation through-hole is fixedly connected with the upper jaw of testing machine, and the installation of the second support plate (10) is protruded into the lower end of reinforcing bar (1)
In through-hole, the lower jaw of testing machine is fixedly connected with the flexural pivot connecting rod (14) of third support plate (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820864866.0U CN208187945U (en) | 2018-06-05 | 2018-06-05 | A kind of loading device for bond-slip properties test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820864866.0U CN208187945U (en) | 2018-06-05 | 2018-06-05 | A kind of loading device for bond-slip properties test |
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| Publication Number | Publication Date |
|---|---|
| CN208187945U true CN208187945U (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820864866.0U Expired - Fee Related CN208187945U (en) | 2018-06-05 | 2018-06-05 | A kind of loading device for bond-slip properties test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801906A (en) * | 2018-06-05 | 2018-11-13 | 西安建筑科技大学 | A kind of loading device and method for bond-slip properties experiment |
-
2018
- 2018-06-05 CN CN201820864866.0U patent/CN208187945U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801906A (en) * | 2018-06-05 | 2018-11-13 | 西安建筑科技大学 | A kind of loading device and method for bond-slip properties experiment |
| CN108801906B (en) * | 2018-06-05 | 2024-07-02 | 西安建筑科技大学 | Loading device and method for bonding slip performance test |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20210605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |