CN209745727U - Shear test fixture for steel bar welded mesh - Google Patents
Shear test fixture for steel bar welded mesh Download PDFInfo
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- CN209745727U CN209745727U CN201920581917.3U CN201920581917U CN209745727U CN 209745727 U CN209745727 U CN 209745727U CN 201920581917 U CN201920581917 U CN 201920581917U CN 209745727 U CN209745727 U CN 209745727U
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- anchor clamps
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Abstract
The utility model discloses steel bar welding net shear test anchor clamps, including the anchor clamps body, anchor clamps head, cross draw-in groove and solid fixed ring, the anchor clamps body and the first integrated shaping of anchor clamps, the cross draw-in groove has been seted up to the anchor clamps body, the vertical groove lower part of cross draw-in groove link up the anchor clamps body, gu fixed ring movably overlaps on the anchor clamps body. The bottom of the transverse groove of the cross clamping groove is arc-shaped. The utility model discloses the open type can make the tension reinforcing bar free end slide along the axis direction, can realize fixing to the horizontal reinforcing bar of sample, and horizontal reinforcing bar points the interval little, can not produce too big bending deformation and rotation, accords with "steel for reinforced concrete 3 rd part: the requirement of the steel bar welding net GB/T1499.3-2010, the structure is simple, and the manufacturing cost is low.
Description
Technical Field
The utility model belongs to the technical field of the steel bar welding site intensity test, especially steel bar welding net shear test anchor clamps.
Background
According to the specification of a file No. 113 in the inspection agency quality level standard of the highway water transport engineering test inspection agency, safety supervision, the steel bar item detection parameters comprise a steel bar welding network shear resistance test in the qualification level standard of the highway engineering comprehensive grade B inspection agency, and according to the specification, part 3 of steel for reinforced concrete: the requirements of the welding reinforcing bar net GB/T1499.3-2010 need a special fixture for the shear test of the welding reinforcing bar net and the specified test requirements of the shear test. The national standard only makes a written description on the principle of a detection device for a resistance shear test, and the current general test method is that two crossed reinforcing steel bars at a welding point are used as a transverse bar and are fixed or blocked, and the other reinforcing steel bar is used as a longitudinal bar and bears tension, so that the welding point is subjected to the action of shear stress, the force is gradually applied until the welding point is cut short, and the maximum load during the damage is measured. However, the test fixture in the prior art has no protection device, and can not effectively prevent the safety accidents possibly caused by the flying-off of the sample in the test.
disclosure of Invention
The utility model aims at providing a can let the testing machine pass through anchor clamps and apply the power value along the tension bar axis, can make the tension bar free end slide along the axis direction, can realize fixing to sample transverse reinforcement, can prevent that transverse reinforcement from producing too big bending deformation and rotation, accord with "steel for reinforced concrete 3 rd part: the steel bar welding net shear test fixture has the advantages of simple structure and low manufacturing cost according to the requirements of the steel bar welding net GB/T1499.3-2010.
The utility model adopts the following technical scheme:
the shear test fixture for the steel bar welding net comprises a fixture body, a fixture head, a cross clamping groove and a fixing ring, wherein the fixture body is integrally formed with the fixture head, the cross clamping groove is formed in the fixture body, the lower part of a longitudinal groove of the cross clamping groove is communicated with the fixture body, and the fixing ring is movably sleeved on the fixture body. The bottom of the transverse groove of the cross clamping groove is arc-shaped.
the utility model has the advantages of it is following:
the structure is simple;
② the manufacturing cost is low.
And thirdly, the tester can apply force values along the axis of the tensile steel bar through the clamp.
And fourthly, the free end of the tension steel bar can slide along the axial direction.
The transverse steel bar of the sample can be fixed, and the transverse steel bar is prevented from being excessively bent, deformed and rotated.
Sixthly, the steel meets the requirement of the No. 3 steel for reinforced concrete: the requirement of the steel bar welding net GB/T1499.3-2010.
The cross groove bottom of the cross clamping groove of the clamp is arc-shaped, so that the steel bar is stabilized, and the cross clamping groove and the fixing ring provide double guarantee for fixing the steel bar. The fixed ring mainly fixes the longitudinal steel bar, and the arc-shaped groove bottom of the transverse groove mainly fixes the transverse steel bar, so that the clamp is more stable and safe than the traditional clamp.
Drawings
Fig. 1 is the utility model discloses welded steel bar net shear test anchor clamps's schematic structure diagram.
fig. 2 is a schematic structural view of the other side of fig. 1.
In the figure, 1: a fixture body, 2: a clamp head; 3: longitudinal groove of cross neck, 4: cross groove of cross neck, 5: and (4) fixing the ring.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, which are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the anti-shearing test fixture for the steel bar welding net comprises a fixture body 1, a fixture head 2, a cross clamping groove and a fixing ring 5, wherein the fixture body 1 and the fixture head 2 are integrally formed, the fixture head 2 is matched with an upper end chuck of a universal testing machine, the fixture body 1 is provided with the cross clamping groove, the lower part of a longitudinal groove 3 of the cross clamping groove is communicated with the fixture body 1, a longitudinal rib of a sample is placed in the longitudinal groove 3 of the cross clamping groove, and a transverse rib of the sample is placed in a transverse groove 4 of the cross clamping groove. The fixing ring 5 is sleeved on the longitudinal rib used for fixing the sample on the clamp body 1, and the fixing ring 5 is provided with an opening. The bottom of the transverse groove 4 of the cross clamping groove is arc-shaped, so that the transverse steel bar of the test sample can be fixed more conveniently.
According to section 3 of steel for reinforced concrete: the requirement of welded steel bar net "GB/T1499.3-2010, the utility model discloses among the special fixture of chuck on the testing machine can be fixed in to the anchor clamps head 2 of welded steel bar net shear test anchor clamps, the utility model discloses the value of force can be exerted along the tensile reinforcing bar axis to the welded steel bar net shear test anchor clamps when experimental, makes the tensile reinforcing bar free end slide along the axis direction, and is suitably fixed (the transverse reinforcement pointing interval is as little as possible to the sample transverse reinforcement, prevents that it from producing too big bending and rotation). The utility model discloses use is combined together with universal tester when welded steel bar net shear test anchor clamps use, accurate control tensile test speed and assurance reinforcing bar atress direction, this anchor clamps low in cost, existing function and chuck of make full use of universal tester, use with the universal tester is supporting to satisfy "steel for reinforced concrete part 3: the requirement of the steel bar welding net GB/T1499.3-2010.
The utility model discloses welded steel bar net shear resistance test anchor clamps use the step as follows:
Firstly, rotating a fixing ring 5 to enable an opening of the fixing ring 5 to correspond to the cross clamping groove, placing a processed shear-resistant sample into the cross clamping groove, and rotating the fixing ring 5 to enable the opening to be staggered with the cross clamping groove so as to fix a reinforcing mesh sample;
Secondly, a power supply of the universal testing machine is turned on, the clamp head 2 is placed in an upper end clamp of the universal testing machine to be clamped stably, the exposed part of the lower end of the longitudinal bar is placed in a lower end clamp of the testing machine to be clamped stably, and the length of a tension section of the longitudinal bar at the lower part of the transverse bar of the sample is ensured to be larger than 15 cm;
Thirdly, performing a steel bar tensile test according to the operation rules of the testing machine, stopping the testing machine immediately when the welding joint is broken or the longitudinal steel bar is broken, and recording the anti-shearing test result of the steel bar welding net;
fourthly, the shearing resistance tests of other test pieces are carried out according to the method, and the average value of the shearing resistance of the 3 test pieces is calculated and is accurate to 0.1 KN.
Claims (2)
1. The shear test fixture for the steel bar welding net is characterized by comprising a fixture body, a fixture head, a cross clamping groove and a fixing ring, wherein the fixture body is integrally formed with the fixture head, the cross clamping groove is formed in the fixture body, the lower portion of a longitudinal groove of the cross clamping groove is communicated with the fixture body, and the fixing ring is movably sleeved on the fixture body.
2. The shear test fixture for welded steel mesh as recited in claim 1, wherein the cross slot has an arc-shaped bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581917.3U CN209745727U (en) | 2019-04-26 | 2019-04-26 | Shear test fixture for steel bar welded mesh |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581917.3U CN209745727U (en) | 2019-04-26 | 2019-04-26 | Shear test fixture for steel bar welded mesh |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209745727U true CN209745727U (en) | 2019-12-06 |
Family
ID=68722018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920581917.3U Active CN209745727U (en) | 2019-04-26 | 2019-04-26 | Shear test fixture for steel bar welded mesh |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209745727U (en) |
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2019
- 2019-04-26 CN CN201920581917.3U patent/CN209745727U/en active Active
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