CN111766197A - Fixing device for testing concrete damping - Google Patents
Fixing device for testing concrete damping Download PDFInfo
- Publication number
- CN111766197A CN111766197A CN202010742013.1A CN202010742013A CN111766197A CN 111766197 A CN111766197 A CN 111766197A CN 202010742013 A CN202010742013 A CN 202010742013A CN 111766197 A CN111766197 A CN 111766197A
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- CN
- China
- Prior art keywords
- fixture
- fixing
- test piece
- clamp
- concrete
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- 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.)
- Pending
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- 238000012360 testing method Methods 0.000 title claims abstract description 87
- 238000013016 damping Methods 0.000 title claims abstract description 34
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of concrete, and discloses a fixing device for testing concrete damping, which can effectively fix a small and medium concrete sample and improve the accuracy of concrete damping test, and comprises the following components: a clamp and an operation table. The fixture comprises a fixture main body, four fixing holes, two bolts and two fixing fixture blocks, wherein the two fixing holes are distributed on two wings of the fixture main body, the other two fixing holes are respectively positioned at the centers of the two fixing fixture blocks, and the bolts are used for connecting the two fixing fixture blocks through the fixing holes in the fixture main body and the fixing fixture blocks. The anti-slip gasket is arranged between the contact surface of the clamp main body and the test piece and between the contact surface of the fixed clamping block and the operation table, and the friction force between the clamp main body and the test piece and the contact surface of the fixed clamping block and the operation table is increased. The surface of the operating platform is provided with three grooves for placing and fixing the clamping block, so that the clamp is connected with the operating platform. The invention has the advantages of good fixing effect, simple operation and wide application range, and can be applied to concrete samples with different sizes and shapes.
Description
Technical Field
The invention relates to the field of concrete damping performance testing, in particular to a fixing device.
Background
Modern building structures are subject to dynamic loads such as earthquake, strong wind, wave scouring and explosion impact in the using process, and external excitation loads are input into the structure in the form of energy to cause severe vibration, so that the safety of the building structure is influenced. The damping of the structure comprises the friction damping inside the material, the friction damping between nodes and the like, the energy loss of the building structure is measured when the building structure vibrates, the damping performance of the concrete can determine the strength of the energy absorbed by the building structure when the building structure vibrates, and the damping material plays an important role in the building structure.
Therefore, how to accurately test the damping of the concrete becomes an important factor for ensuring the safety of buildings and structures, and how to effectively fix the test piece in the test process of the damping of the concrete is the key point for accurately testing the damping of the concrete.
The existing damping test method, such as a suspension method, adopts a fixing mode of freely restricting two ends to fix a test piece, and the test piece can generate displacement during testing, thereby greatly influencing the result of the concrete damping test.
The fixing device combining the clamp and the operating platform can effectively fix the T-shaped and prismatic concrete test piece, so that the test piece is not easy to deviate due to external force caused by hammering in a damping hammering test, and the damping test result is influenced.
Disclosure of Invention
Aiming at the situation, the invention provides a fixing device for fixing a concrete sample to the greatest extent in order to solve the problem that the concrete is easy to displace in a damping test.
The utility model provides a fixing device for testing concrete damping, includes anchor clamps to and be used for settling the operation panel of concrete test piece and anchor clamps, its characterized in that includes:
the clamp comprises a clamp main body, a fixed clamping block and a bolt, wherein the clamp main body is arranged on the test piece and can be arranged at different positions of the test piece according to test requirements. The fixed clamping block is arranged in the groove of the operating platform and used for connecting the clamp main body to the operating platform. The bolt is used for penetrating through the fixing hole and connecting the clamp main body with the fixing clamping block.
The grooves are distributed on the operating platform in three ways, the distance between every two adjacent grooves is equal, and the upper parts of the grooves can clamp the fixed clamping blocks.
And the fixing hole is used for fixing the bolt of the fixture block through the connecting fixture main body, and threads matched with the bolt are arranged in the fixing hole.
And the anti-slip gasket is arranged on the contact surface of the test piece and the clamp main body and the contact surface of the fixed clamping block and the operating platform and used for preventing the test piece from deviating due to external force during a damping experiment.
Preferably, the operating platform is provided with three grooves for the fixed clamping block to slide back and forth.
Preferably, two wings of the concrete clamp main body are respectively provided with a fixing hole, so that the bolt can be connected with the fixing clamping block.
Preferably, the antiskid gasket is provided with a small round hole for a bolt to pass through. A
Preferably, the fixed fixture block is a steel cuboid and can freely slide in a groove in the operating platform.
Preferably, a fixing hole is formed in the center of the fixing clamping block, so that the bolt can be connected with the concrete clamp body.
The invention has the following advantages:
1. the test piece can be effectively tightened, so that the test piece is not easy to move in the experiment.
2. The concrete test piece with various shapes can be fixed.
3. The assembly is simple, time-saving and labor-saving.
Drawings
FIG. 1 is a schematic view of the overall fastening device of the present invention.
FIG. 2 is a schematic view of the operation of the anti-slip gasket and the fixed clamping block in the groove of the present invention.
FIG. 3 is a schematic view of the concrete jig of the present invention as a whole.
Reference numerals: 1. a clamp; 2. an operation table; 3. a clamp body; 4. fixing the fixture block; 5. a bolt; 6. a test piece; 7. a groove; 8. a fixing hole; 9. an anti-skid gasket.
Detailed description of the invention
The operation of the present invention will be described in detail with reference to fig. 1 to 3, and the operation principle of the present invention will be clearly shown.
The embodiment discloses a fixing device for testing concrete damping, as shown in fig. 1, the fixing device mainly comprises a clamp and an operating platform, wherein the operating platform is provided with three grooves, the distance between every two adjacent grooves is equal, and the upper parts of the grooves are provided with a narrow slit for clamping a fixed clamping block. The clamp comprises a clamp main body and a fixed clamping block, wherein two wings of the clamp main body are respectively provided with a fixed hole, and the fixed holes are respectively connected with the fixed holes at the central position of the fixed clamping block through bolts.
When carrying out the concrete damping test, at first steadily settle the test piece on the operation panel, then settle the anchor clamps main part on the test piece, the anchor clamps main part is settled the position and is decided according to the damping test requirement, need settle anti-skidding gasket in the contact surface department of anchor clamps main part with the test piece, settle fixed fixture block in the recess of operation panel again, place the anti-skidding gasket that the centre has the aperture with the contact surface department of recess, it is to it with the fixed orifices of fixed fixture block and the fixed orifices of anchor clamps main part through the slide rail, connect both with the bolt, screw up the bolt fastening test piece.
The first embodiment is as follows: in this embodiment, a damping test is performed on a T-shaped concrete sample, and the size of the sample can be determined according to the size of the clamp, which is not described in detail herein.
For the T-shaped concrete test piece, two different methods can be adopted for fixing the T-shaped concrete test piece.
The first type is vertical, the method needs to stand a T-shaped test piece on an operation table with an upper flange as a bottom, the upper flange of the T-shaped test piece is positioned between two grooves of the operation table, then two clamps need to be prepared, two sides of the upper flange of the T-shaped test piece are respectively clamped, and the specific operation mode of a single side is as follows: the clamp main body is arranged on one side of the upper flange of the T-shaped test piece, the anti-slip gasket is required to be arranged at the contact surface of the clamp main body and the test piece, the two fixing clamping blocks are arranged in the corresponding grooves respectively, the anti-slip gasket with a small hole in the middle is placed at the contact surface of the groove, the fixing holes of the fixing clamping blocks and the fixing holes of the clamp main body are aligned through the slide rails, the two fixing clamping blocks and the fixing holes of the clamp main body are connected through bolts, and the test piece is fixed through the bolts. The other side of the upper flange of the T-shaped test piece is also fixed by adopting the method.
The second type is horizontal, the method needs to place a T-shaped test piece on an operation table horizontally, the upper flange of the T-shaped test piece is located between two grooves of the operation table, the lower half part of the T-shaped test piece extends out of the operation table, a clamp main body is arranged on one side of the upper flange of the T-shaped test piece, an anti-skid gasket needs to be arranged on the contact surface of the clamp main body and the test piece, two fixing clamping blocks are respectively arranged in the corresponding grooves, the anti-skid gasket with a small hole in the middle is arranged on the contact surface of the groove, the fixing holes of the fixing clamping blocks and the fixing holes of the clamp main body are matched through sliding rails, the fixing holes and the fixing holes are connected through bolts. The other side of the upper flange of the T-shaped test piece is also fixed by adopting the method.
In the second embodiment, the damping test is performed on a prismatic concrete test piece, and the size of the test piece can be determined according to the size of the clamp, which is not described in detail herein.
For a generally prismatic test piece, it is possible to place the clamps at different locations on the test piece depending on the test requirements.
In this embodiment, at first crouch prismatic test piece, settle between two recesses of operation panel, suspend two-thirds of prismatic test piece outside the operation panel, the third part is stayed on the operation panel and is used for fixing in addition, settle two anchor clamps in the prismatic test piece part of staying on the operation panel, need settle anti-skidding gasket in the contact surface department of anchor clamps main part with the test piece, settle four fixed fixture blocks respectively in corresponding recess, place the anti-skidding gasket that has the aperture in the middle of with the contact surface department of recess, the fixed orifices of fixing fixture block and the fixed orifices of anchor clamps main part pair its through the slide rail, connect both with the bolt, screw up bolt fastening test piece.
In the process of carrying out the damping test at the concrete test piece, the fixed fixture block of anchor clamps main part cooperation is with the test piece firmly be fixed in the operation panel on to the anti-skidding gasket between anchor clamps and test piece and operation panel and the fixed fixture block has effectively increased holistic frictional force between test piece and the fixing device, makes it more difficult emergence removal.
The invention can be additionally provided with the clamp, the anti-skid gasket and the fixed clamping block according to the requirements, so that the concrete test piece is clamped to the maximum extent, and the accuracy of the damping experiment result is ensured.
The invention has the following advantages:
1. the test piece can be effectively tightened, so that the test piece is not easy to move in the experiment.
2. The concrete test piece with various shapes can be fixed.
3. The assembly is simple, time-saving and labor-saving.
Claims (6)
1. A fixing device for testing concrete damping, includes anchor clamps (1) to and be used for settling concrete test piece and operation panel (2) of anchor clamps, its characterized in that includes:
the clamp comprises a clamp main body (3), a fixed clamping block (4) and a bolt (5), wherein the clamp main body (3) is arranged on a test piece (6), and can be arranged at different positions of the test piece (6) according to test requirements. The fixed clamping block (4) is arranged in a groove (7) of the operating platform (2) and is used for connecting the clamp body (3) to the operating platform (2). The bolt (5) is used for penetrating through the fixing hole (8) and connecting the clamp main body (3) with the fixing clamping block (4).
The fixture block comprises grooves (7), wherein three grooves (7) are distributed on the operating platform (2), the distance between every two adjacent grooves is equal, and the upper parts of the grooves can clamp the fixture block.
And the fixing hole (8) is used for connecting the clamp main body with a bolt for fixing the clamping block, and threads matched with the bolt are arranged in the fixing hole.
And the anti-skid gasket (9) is arranged on the contact surface of the test piece (6) and the clamp main body (3) and the contact surface of the fixed clamping block (4) and the operating platform (2) and used for preventing the test piece from shifting due to external force during a damping experiment.
2. A fixture for testing the damping of concrete according to claim 1, characterized in that the operating platform (2) is provided with a groove (7), and the groove (7) is used for placing the fixture block (4) connected with the fixture body (3).
3. A fixture for testing the damping of concrete according to claim 1, characterized in that said clamp body (3) has two fixing holes (8), two fixing holes (8) being distributed on the two wings of the clamp body.
4. A fixture for testing the damping of concrete according to claim 1, characterized in that said fixture block (4) has a fixture hole (8) located at the center of the fixture block.
5. A fixture for testing concrete damping according to claim 1, characterized in that said bolt (5) is used to connect the fixture body (3) with the fixture block (4).
6. A fixture for testing concrete damping according to claim 1, characterized in that the anti-skid washer (9) is disposed between the test piece (6) and the fixture body (3) and between the fixture block (4) and the upper part of the console groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742013.1A CN111766197A (en) | 2020-07-22 | 2020-07-22 | Fixing device for testing concrete damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742013.1A CN111766197A (en) | 2020-07-22 | 2020-07-22 | Fixing device for testing concrete damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111766197A true CN111766197A (en) | 2020-10-13 |
Family
ID=72727772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010742013.1A Pending CN111766197A (en) | 2020-07-22 | 2020-07-22 | Fixing device for testing concrete damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111766197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945538A (en) * | 2021-03-17 | 2021-06-11 | 一汽奔腾轿车有限公司 | Unlocking mechanism of external handle in vehicle door endurance test |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207318228U (en) * | 2017-10-26 | 2018-05-04 | 吉林建筑大学 | A kind of steel fibre drawing test piece fixing device from concrete |
-
2020
- 2020-07-22 CN CN202010742013.1A patent/CN111766197A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207318228U (en) * | 2017-10-26 | 2018-05-04 | 吉林建筑大学 | A kind of steel fibre drawing test piece fixing device from concrete |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945538A (en) * | 2021-03-17 | 2021-06-11 | 一汽奔腾轿车有限公司 | Unlocking mechanism of external handle in vehicle door endurance test |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201013 |
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| WD01 | Invention patent application deemed withdrawn after publication |