CN220819627U - Reinforced concrete test device with wide application range - Google Patents
Reinforced concrete test device with wide application range Download PDFInfo
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- CN220819627U CN220819627U CN202322545746.8U CN202322545746U CN220819627U CN 220819627 U CN220819627 U CN 220819627U CN 202322545746 U CN202322545746 U CN 202322545746U CN 220819627 U CN220819627 U CN 220819627U
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- 238000012360 testing method Methods 0.000 title claims abstract description 150
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 230000008094 contradictory effect Effects 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000004567 concrete Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a reinforced concrete test device with a wide application range, which comprises a portal frame, a test machine hung on the portal frame, a fixed workpiece fixedly arranged in a ground anchor hole and positioned right below the test machine, an upper test clamp and a lower test clamp which are oppositely and separately arranged, wherein the separated ends of the upper test clamp and the lower test clamp are respectively connected with a chuck of the test machine and the fixed workpiece, and a test piece is arranged between the upper test clamp and the lower test clamp. Through setting up the upper test fixture and the lower test fixture of opposite disconnect-type to set up scalable screw rod therein, applicable multiple different specification size's reinforced concrete test piece.
Description
Technical Field
The utility model relates to the field of reinforced concrete tests, in particular to a reinforced concrete test device with a wide application range.
Background
At present, the reinforced concrete has rich adhesive property research results and complete test modes, but is mainly concentrated on the aspects of an anchoring test of a single steel bar and a lap joint test of two steel bars. The existing test device has the defects that the limitation is large, the reinforced concrete bonding slip test and the reinforced concrete stress test with large sizes (the length is more than 1m and the width is more than 0.5 m) cannot be carried out, meanwhile, most of the existing test devices are the whole loading frames which are fixing devices, only the loading of test pieces with the current sizes can be realized, and the applicability of test pieces with multiple sizes is avoided, so that the reinforced concrete test device with wide application range is provided to solve the problems.
Disclosure of utility model
The utility model mainly aims to provide a reinforced concrete test device with wide application range, and solves the problems that the whole loading frame of the existing test device is a fixing device, only the loading of a test piece with the current size can be realized, and the applicability of a test piece with multiple sizes is avoided.
In order to solve the technical problems, the utility model adopts the following technical scheme: the reinforced concrete test device with the wide application range comprises a portal frame, a test machine hung on the portal frame, a fixed workpiece fixedly arranged in a ground anchor hole and positioned right below the test machine, and an upper test clamp and a lower test clamp which are oppositely and separately arranged, wherein the separated ends of the upper test clamp and the lower test clamp are respectively connected with a chuck of the test machine and the fixed workpiece, and a test piece is arranged between the upper test clamp and the lower test clamp;
The upper test fixture and the lower test fixture are composed of a plurality of telescopic screws and abutting steel plates sleeved outside the telescopic screws, limit nuts are arranged at the opposite ends of the telescopic screws of the upper test fixture and the lower test fixture, and the two abutting steel plates are respectively positioned at the opposite sides of the upper test fixture and the lower test fixture;
A plurality of sleeved holes for the telescopic screw rod to penetrate through are formed in the abutting steel plate, and a U-shaped groove for installing the test piece is formed in the abutting steel plate.
In the preferred scheme, the opposite sides of two conflict steel sheets are provided with corresponding laser rangefinder transmitter and laser rangefinder receiver respectively.
In the preferred scheme, the bottom of the abutting steel plate of the lower test fixture is provided with two stress sensors which are symmetrically distributed.
In the preferred scheme, scalable screw rod comprises three cavity screw rod mutually telescopic grafting, and three cavity screw rod is outer loop bar, well sleeve pipe and interior sleeve pipe respectively, and wherein, well sleeve pipe telescopic grafting is in the overcoat bar, and interior sleeve pipe telescopic grafting is in well sleeve pipe, and the bottom of outer loop bar and interior sleeve pipe's top all are provided with the thread silk of installation stop nut.
In the preferred scheme, be provided with a plurality of bolt that is used for fixed on the coincidence section between three cavity screw rods, all be provided with a plurality of pinholes that supply the bolt to pass on the three cavity screw rods.
In the preferred scheme, two opposite limit sliding grooves are formed in the inner wall surfaces of the outer sleeve rod and the middle sleeve, two limit sliding blocks are arranged on the outer wall surfaces of the tail ends of the middle sleeve and the inner sleeve, and the two limit sliding blocks correspond to the two limit sliding grooves respectively and are in sliding connection.
In a preferred scheme, the three hollow screws are in threaded connection.
The utility model provides a reinforced concrete test device with wide application range, which has the following beneficial effects:
1. the upper test clamp and the lower test clamp which are separated in a opposite way are arranged, and the telescopic screw rod is arranged in the upper test clamp and the lower test clamp, so that the device is applicable to reinforced concrete test pieces with various specifications and sizes;
2. Through setting up laser range transmitter, laser range receiver and stress sensor, can realize the work piece and center fast and leveling, accomplish the measurement of sliding relatively simultaneously, it is high-efficient accurate to measure concrete test piece local pressure through stress sensor, be convenient for control test piece symmetry atress, work piece leveling avoids local stress concentration, test piece damage.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a block diagram of the present utility model;
FIG. 2 is a diagram of the connection structure of the upper test fixture and the lower test fixture of the present utility model;
FIG. 3 is a view showing the structure of the interference steel plate according to the present utility model;
FIG. 4 is a diagram showing the connection structure of the contradicting steel plate, the laser ranging transmitter, the laser ranging receiver and the stress sensor;
FIG. 5 is a block diagram of a retractable screw of the present utility model;
FIG. 6 is a cross-sectional view of the telescopic screw structure of the present utility model;
FIG. 7 is an enlarged view of the structure A of FIG. 5 in accordance with the present utility model;
FIG. 8 is a diagram of the connection of the upper and lower test fixtures to a short-sized test piece according to the present utility model;
FIG. 9 is a diagram showing the connection structure of the upper and lower test jigs and a long test piece according to the present utility model;
In the figure: a portal frame 1; fixing the workpiece 2; a testing machine 3; a test fixture 4 is arranged; a retractable screw 41; a jacket pole 410; middle sleeve 411; an inner sleeve 412; a plug 413; a pressing steel plate 42; a sleeve hole 421; u-shaped slot 422; a lower test jig 5; a test piece 6; a laser ranging transmitter 7; a laser ranging receiver 8; stress sensor 9.
Detailed Description
Example 1
As shown in fig. 1-4, the reinforced concrete test device with wide application range comprises a portal frame 1, a test machine 3 which is hoisted on the portal frame 1, a fixed workpiece 2 which is fixedly arranged in a ground anchor hole and is positioned right below the test machine 3, an upper test clamp 4 and a lower test clamp 5 which are oppositely and separately arranged, wherein the separated ends of the upper test clamp 4 and the lower test clamp 5 are respectively connected with a chuck of the test machine 3 and the fixed workpiece 2, and a test piece 6 is arranged between the upper test clamp 4 and the lower test clamp 5;
In use, the test piece 6 is fixed between the upper test fixture 4 and the lower test fixture 5, and then the testing machine 3 is started to perform a related test on the test piece 6.
The upper test fixture 4 and the lower test fixture 5 are composed of a plurality of telescopic screws 41 and abutting steel plates 42 sleeved outside the telescopic screws 41, in the embodiment, the number of the telescopic screws 41 is four, limit nuts are arranged at opposite ends of the four telescopic screws 41 of the upper test fixture 4 and the lower test fixture 5, and the two abutting steel plates 42 are respectively located at opposite sides of the upper test fixture 4 and the lower test fixture 5;
four sleeving holes 421 for the penetration of the telescopic screw 41 and a U-shaped groove 422 for installing the test piece 6 are formed in the abutting steel plate 42.
When the test fixture is used, the end head of the telescopic screw 41 is inserted into the corresponding sleeve hole 421, the limit nut is installed, then the steel bars of the test specimen 6 are installed in the upper test fixture 4 and the lower test fixture 5 through the U-shaped groove 422, and the test specimen 6 with different shapes and sizes can be adapted by adjusting the length of the telescopic screw 41.
It should be noted that, when the test piece 6 is a concrete structure with two ends and a bare steel bar in the middle, fixation can be achieved through the interference between the concrete at the two ends and the interference steel plate 42, and when the test piece 6 is a bare steel bar with two ends or one end, a gasket and a nut are required to be installed outside the bare steel bar to fix the steel plate 42.
In addition, the fixed workpiece 2 is formed by welding a bottom plate, a plurality of risers arranged on the bottom plate and a top plate arranged on the risers, and holes for the telescopic screw 41 to pass through are formed in the top plate and the clamping head of the testing machine 3.
The separated ends of the telescopic screw rods 41 of the upper test fixture 4 and the lower test fixture 5 respectively penetrate through the clamping head of the testing machine 3 and the top plate of the fixed workpiece 2, and limit nuts are arranged in a threaded manner.
In the preferred scheme, corresponding laser range finding transmitter 7 and laser range finding receiver 8 have been set firmly respectively to the opposite side of two conflict steel sheets 42, and when installing test piece 6, the accessible laser aims at realizing test piece frock centering, and in the experimentation, the relative measurement of sliding of completion through laser range finding transmitter 7 and laser range finding receiver 8 high efficiency accuracy simultaneously.
In the preferred scheme, two symmetrically distributed stress sensors 9 are fixedly arranged at the bottom of the abutting steel plate 42 of the lower test fixture 5. Tool leveling is achieved through consistency of pressure data on two sides when the test piece 6 is installed, meanwhile, in the experimental process, the stress sensor 9 is convenient to control symmetrical stress of the test piece 6, workpiece leveling is achieved, local stress concentration is avoided, and the test piece 6 is damaged.
Example 2
In further explanation with reference to embodiment 1, as shown in fig. 5-7, the retractable screw 41 is formed by inserting three hollow screws that are respectively an outer sleeve 410, a middle sleeve 411 and an inner sleeve 412, wherein the middle sleeve 411 is inserted into the outer sleeve 410 in a retractable manner, the inner sleeve 412 is inserted into the middle sleeve 411 in a retractable manner, threaded wires for installing limit nuts are respectively arranged at the bottom end of the outer sleeve 410 and the top end of the inner sleeve 412, the outer sleeve 410 and the middle sleeve 411 are hollow pipes with openings at the top ends, and when in use, the length adjustment of the retractable screw 41 is realized through the extension and retraction between the three hollow screws.
In the preferred scheme, be provided with a plurality of bolt 413 that are used for fixed on the coincidence section between the three cavity screw rod, all be provided with a plurality of pinholes that supply bolt 413 to pass on the three cavity screw rod, the pinhole equidistance distributes, is suitable for the cavity screw rod of different length to be fixed.
It should be noted that the strength of the hollow screw rod needs to meet the maximum tensile force requirement of the test, and meets the requirements of safety storage and rigidity deformation, the height of the telescopic screw rod can be adjusted according to different test pieces, and the minimum adjustment gradient is 30mm.
In the preferred scheme, two opposite limit sliding grooves 414 are formed in the inner wall surfaces of the outer sleeve 410 and the middle sleeve 411, two limit sliding blocks 415 are fixedly arranged on the outer wall surfaces of the tail ends of the middle sleeve 411 and the inner sleeve 412, the two limit sliding blocks 415 correspond to the two limit sliding grooves 414 respectively and are in sliding connection, and unnecessary rotation of three hollow screws in the extending and retracting process is prevented conveniently through sliding of the limit sliding blocks 415 in the limit sliding grooves 414, so that dislocation of pin holes is caused, and the plug pins 413 cannot be inserted.
Example 3
As further described in connection with example 2, the telescoping length can also be adjusted by threaded connection between the three hollow screws.
Example 4
Further described in connection with examples 1-2, the structure shown in FIGS. 1-9 is embodied as follows: firstly, a fixed workpiece 2 is installed, the fixed workpiece is fixed in a ground anchor hole by adopting a bolt, a test fixture 4 is installed, a telescopic screw 41 is installed on a chuck of a testing machine 3, the screw height can be adjusted according to the length of a test piece, then a collision steel plate 42 is installed, and a lower test fixture 5 is installed by adopting the same method. After the workpiece is adjusted in place, the drawing test piece 6 is pushed into the workpiece from the U-shaped groove 422, the laser ranging transmitter 7 and the stress sensor 9 are opened, the alignment of the test piece tool is realized through laser alignment, the tool leveling is realized through the consistency of pressure data on two sides, the pre-tightening and test piece installation operation is completed, then the load of the tester 3 is applied, the laser ranging transmitter 7 and the stress sensor 9 are opened, and the test loading and the monitoring of the concrete local stress and the relative sliding data of the parts in the process are carried out.
The device is not limited to the reinforced concrete bonding slip test, can also be used for carrying out the reinforced concrete drawing test, and is suitable for concrete test pieces or reinforced concrete test pieces at the ends.
The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (7)
1. The utility model provides a reinforced concrete test device that application scope is wide, includes portal frame (1) and hoist and mount test machine (3) on portal frame (1), characterized by: the device further comprises a fixed workpiece (2) fixedly arranged in the ground anchor hole and positioned under the testing machine (3), and an upper testing clamp (4) and a lower testing clamp (5) which are oppositely and separately arranged, wherein the separated ends of the upper testing clamp (4) and the lower testing clamp (5) are respectively connected with the clamping head of the testing machine (3) and the fixed workpiece (2), and a test piece (6) is arranged between the upper testing clamp (4) and the lower testing clamp (5);
The upper test clamp (4) and the lower test clamp (5) are composed of a plurality of telescopic screws (41) and abutting steel plates (42) sleeved outside the telescopic screws (41), limit nuts are arranged at opposite ends of the telescopic screws (41) of the upper test clamp (4) and the lower test clamp (5), and the two abutting steel plates (42) are respectively located at opposite sides of the upper test clamp (4) and the lower test clamp (5);
A plurality of sleeved holes (421) for the penetration of the telescopic screw rods (41) are formed in the abutting steel plates (42), and U-shaped grooves (422) for installing the test pieces (6) are formed in the abutting steel plates.
2. The reinforced concrete test device with wide application range as set forth in claim 1, which is characterized in that: the opposite sides of the two contradicting steel plates (42) are respectively provided with a corresponding laser ranging transmitter (7) and a corresponding laser ranging receiver (8).
3. The reinforced concrete test device with wide application range as set forth in claim 2, characterized in that: the bottom of the abutting steel plate (42) of the lower test fixture (5) is provided with two symmetrically distributed stress sensors (9).
4. A reinforced concrete test apparatus having a wide application range according to any one of claims 1 to 3, characterized in that: the telescopic screw rod (41) is formed by mutually telescopic grafting of three hollow screw rods, the three hollow screw rods are respectively an outer sleeve rod (410), a middle sleeve (411) and an inner sleeve (412), wherein the middle sleeve (411) is telescopically spliced in the outer sleeve rod (410), the inner sleeve (412) is telescopically spliced in the middle sleeve (411), and threaded wires for installing limit nuts are respectively arranged at the bottom end of the outer sleeve rod (410) and the top end of the inner sleeve (412).
5. The reinforced concrete test device with wide application range according to claim 4, which is characterized in that: a plurality of bolts (413) for fixing are arranged on the overlapping sections among the three hollow screws, and a plurality of pinholes for the bolts (413) to pass through are arranged on the three hollow screws.
6. The reinforced concrete test device with wide application range according to claim 5, which is characterized in that: two opposite limit sliding grooves (414) are formed in the inner wall surfaces of the outer sleeve rod (410) and the middle sleeve (411), two limit sliding blocks (415) are arranged on the outer wall surfaces of the tail ends of the middle sleeve (411) and the inner sleeve (412), and the two limit sliding blocks (415) correspond to the two limit sliding grooves (414) respectively and are in sliding connection.
7. The reinforced concrete test device with wide application range according to claim 4, which is characterized in that: and the three hollow screws are in threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322545746.8U CN220819627U (en) | 2023-09-19 | 2023-09-19 | Reinforced concrete test device with wide application range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322545746.8U CN220819627U (en) | 2023-09-19 | 2023-09-19 | Reinforced concrete test device with wide application range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220819627U true CN220819627U (en) | 2024-04-19 |
Family
ID=90706536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322545746.8U Active CN220819627U (en) | 2023-09-19 | 2023-09-19 | Reinforced concrete test device with wide application range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220819627U (en) |
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2023
- 2023-09-19 CN CN202322545746.8U patent/CN220819627U/en active Active
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