CN210773998U - Concrete strainometer protective cradle - Google Patents
Concrete strainometer protective cradle Download PDFInfo
- Publication number
- CN210773998U CN210773998U CN201920906911.9U CN201920906911U CN210773998U CN 210773998 U CN210773998 U CN 210773998U CN 201920906911 U CN201920906911 U CN 201920906911U CN 210773998 U CN210773998 U CN 210773998U
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- China
- Prior art keywords
- strain gauge
- steel bar
- concrete
- strainometer
- threaded rod
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- Expired - Fee Related
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- 230000001681 protective effect Effects 0.000 title abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000003466 welding Methods 0.000 claims abstract description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 abstract description 16
- 230000006378 damage Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000002633 protecting effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a concrete strain gauge protective cradle, including reinforcing bar net, threaded rod, fixation nut, V type support, horizontal reinforcing bar net be 6-10 mm's steel bar welding shaping by the diameter, V type scaffold weldment under the reinforcing bar net, fixation nut on the welding on the reinforcing bar net, the threaded rod pass the nut. When the strainometer is used, the strainometer is tied on the V-shaped bracket in advance, and then the strainometer protective bracket is fixed on the horizontal ribs inside and outside the wall body after the concrete outer wall steel bars are tied and before the template is closed. The strainometer protection support can effectively protect the strainometer, prevents that the strainometer from suffering destruction and taking place the skew in concrete placement in-process position, makes it keep stable when measuring the inside strain data of concrete, and the data of surveying are accurate.
Description
Technical Field
The utility model relates to a pre-buried formula measuring instrument's protecting bracket especially relates to a concrete strain gauge protecting bracket.
Background
The strain deformation in a concrete member is often required to be measured in building engineering, a concrete strain gauge is required to be embedded in a reinforcing mesh in advance before concrete pouring, the embedded concrete strain gauge is easily subjected to the impact of concrete or the action of a vibrating rod to generate deviation and even damage in the concrete pouring construction process, the strain gauge loses the effect or causes measurement data errors, the strain gauge can reduce the interference or damage to the strain gauge in the construction process by using a strain gauge protection support, and the measurement data are more stable and accurate.
The prior strain gauge fixing method has the following problems that 1) the firmness is low, and the strain gauge is easy to be damaged in the concrete construction process; 2) the fixing effect is poor, and the strain gauge is likely to be displaced.
In the prior art, chinese patent publication No. CN205976563U discloses a strain gauge protection device for a concrete member, which includes a protective cover and a strain gauge support, wherein the protective cover includes a protective frame and a blocking rib, the strain gauge support includes two U-shaped support rods, a protective space for holding a strain gauge is formed by the two U-shaped support rods and the protective cover, and the concrete vibrating rod is prevented from passing through the protective cover to directly contact the strain gauge, so that the strain gauge is displaced or damaged. However, the patent has the defect that the protective cover consisting of the protective frame body and the blocking ribs is of a fixed welding structure, the thickness of the wall body which can be adapted to the protective cover is fixed, and proper connecting rods cannot be selected according to the thickness of the wall body to be fixed to the inner side and the outer side of the wall body. Chinese patent publication No. CN203259144U discloses a protection device for a concrete strain gauge, comprising: the longitudinal section of the steel bar is a quadrangular or circular or elliptic cylindrical net rack; two support frames are arranged in parallel at the adaptive position of the longitudinal section in the net rack; two opposite corners in the bracket frame are provided with fixing ribs in a crossed manner. The patent can form the protection space around the strainometer, but the wall thickness that it can adapt to still is fixed, can not select suitable connecting rod to fix to the wall inside and outside according to the thickness of wall body.
Disclosure of Invention
To the problem that exists among the prior art, the utility model provides a concrete strain gauge protective cradle, its simple structure, preparation and use are also convenient.
The technical scheme of the utility model is that:
a concrete strain gauge protection support comprises a steel bar mesh, a fixing nut, a threaded rod and a V-shaped support, wherein the steel bar mesh is formed by welding steel bars with the diameter of 6-10mm, the fixing nut is welded on the steel bar mesh, the threaded rod is fixed on the steel bar mesh through a nut, and the V-shaped support is fixed below a horizontal steel bar mesh.
Preferably, the length of the reinforcing mesh is 200-300mm, and the length of the reinforcing mesh is 5 steel bars a; the length of two reinforcing steel bars b is 120-200mm in the short side direction, and the distance c between the reinforcing steel bars a is 30-50 mm.
Preferably, the fixing nut is welded on the steel bar b, the distance d between the fixing nut and the two ends of the steel bar b is 30mm, and the inner diameter of the fixing nut is 6-10 mm.
Preferably, the diameter of the threaded rod corresponds to the inner diameter of the fixing nut, and the threaded rod is fixed on the steel bar net through the fixing nut; the length of the threaded rod is selected according to the thickness of the wall body of the embedded strain gauge, and the selection range is 300-700 mm.
The length of the threaded rod can be selected according to the thickness of the wall body of the embedded strain gauge. And the strain gauge protection bracket is fixed on the internal and external reinforcing steel bars of the wall body after the concrete external wall reinforcing steel bars are bound and before the template is closed.
Preferably, the V-shaped bracket is fixed at the second and fourth lower ends of the steel bar a in the long side direction, the included angle of the V-shaped bracket is 30-60 degrees, and the height h is 50-70 mm.
Preferably, the distance e between the fixed welding point of the V-shaped bracket and the end point of the steel bar a is 30-50 mm.
The utility model has the advantages of as follows:
(1) the distance between the steel bars a in the long side direction of the steel bar mesh is 30-50mm, so that the impact on the strain gauge during concrete pouring can be effectively reduced, and the damage and the position deviation of the strain gauge are avoided.
(2) The distance between the reinforcing steel bars a in the long side direction of the reinforcing mesh is 30-50mm, the distance is smaller than or equal to the diameter of the vibrating rod, the vibrating rod cannot be directly inserted and tamped onto the strain gauge in the process of inserting and tamping concrete, and the damage of the vibrating rod to the strain gauge is avoided.
(3) The threaded rod on the strain gauge protection bracket is fixed through the nut, and then the threaded rod is fixed on horizontal ribs on the inner side and the outer side of the wall body, so that the fixation is firmer, the threaded rod with the proper length can be selected according to the thickness of the wall body, and the use is convenient.
(4) The strain gauge protection bracket is easy to manufacture, convenient to manufacture, good in fixing and protecting effects, capable of avoiding damage of a strain gauge measuring instrument with high cost and capable of ensuring stability and accuracy of data measurement.
Drawings
Fig. 1 is a schematic structural diagram of the present invention according to an embodiment;
fig. 2 is a top view of the present invention according to an embodiment;
FIG. 3 is a top view of a concrete strain gauge of the present invention in mounted relation to a protective bracket according to an embodiment;
FIG. 4 is a side view of a concrete strain gauge of the present invention in mounted relation to a protective bracket according to an embodiment;
fig. 5 is a front view of the present invention according to an embodiment.
In the figure: 1. a reinforcing mesh; 2. fixing a nut; 3. a threaded rod; 4. a V-shaped bracket; 5. a strain gauge; 6. horizontal ribs on the inner side of the wall body; 7. and horizontal ribs are arranged on the outer side of the wall body.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1: the concrete strain gauge protection bracket consists of a steel bar mesh, a fixing nut, a threaded rod and a V-shaped bracket.
As shown in fig. 2 and 3: the reinforcing mesh is formed by welding 5 reinforcing bars with the length of a and 2 reinforcing bars with the length of b, and the reinforcing bars a are welded on the reinforcing bars b at equal intervals. The fixed nut is welded on the reinforcing steel bar b, and the distance between the fixed nut and the end point of the reinforcing steel bar b is d. The threaded rod is fixed on the reinforcing mesh through a fixing nut, and the diameter of the threaded rod is consistent with the inner diameter of the fixing nut. The lengths of the 5 steel bars a in the long side direction of the steel bar mesh are respectively 200-300 mm; the lengths of the two reinforcing steel bars b in the short side direction are respectively 120-200 mm. The distance d between the fixing nut and the two ends of the steel bar b is 30 mm. The inner diameter of the fixing nut is 6-10 mm.
As shown in fig. 1 and 4: the V-shaped brackets are welded on the second and fourth steel bars of the steel bar mesh a and are symmetrical in position. The height of the V-shaped bracket is h, and the range of h is 50-70 mm. The distance between the welding point of the V-shaped bracket and the end point of the steel bar a is e, and the range of e is 30-50 mm. The included angle of the V-shaped bracket is 30-60 degrees.
As shown in fig. 5: the distance between the V-shaped bracket and the end point of the steel bar b is c, and the range of c is 30-50 mm. And the strain gauge 5 is bound on the V-shaped bracket.
Specifically, the length of the threaded rod is selected according to the thickness of the wall body of the embedded strain gauge 5, and the selection range is 300-700 mm.
The beneficial effects of the utility model reside in that:
1. the distance between the steel bars a in the long side direction of the steel bar mesh is 30-50mm, so that the impact of concrete on the strain gauge 5 can be effectively reduced during concrete pouring, and the damage and the position deviation of the strain gauge 5 are avoided.
2. The distance between the reinforcing steel bars a in the long side direction of the reinforcing mesh is 30-50mm and is smaller than the diameter of the concrete vibrating rod, the vibrating rod cannot be directly inserted and tamped above the strain gauge 5 in the process of inserting and tamping concrete, and damage and interference of the vibrating rod on the strain gauge 5 are avoided.
3. The threaded rod on the strain gauge protection bracket is fixed through the nut, and then the threaded rod is fixed on the horizontal rib 6 on the inner side of the wall body and the horizontal rib 7 on the outer side of the wall body, so that the fixation is firmer, the threaded rod with proper length can be selected according to the thickness of the wall body, and the use is convenient.
4. The strain gauge protection bracket is easy to manufacture, convenient to manufacture, good in fixing and protecting effects, capable of avoiding damage of a strain gauge measuring instrument with high cost and capable of ensuring stability and accuracy of data measurement.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A concrete strainometer protection support comprises a steel bar mesh, fixing nuts, a threaded rod and a V-shaped support, and is characterized in that the steel bar mesh is formed by welding steel bars with the diameter of 6-10mm, the fixing nuts are welded on the steel bar mesh, the threaded rod is fixed on the steel bar mesh through nuts, and the V-shaped support is fixed below a horizontal steel bar mesh.
2. The concrete strain gauge protection bracket as claimed in claim 1, wherein the length of the 5 steel bars a in the long side direction of the steel bar mesh is 200-300 mm; the length of two reinforcing steel bars b is 120-200mm in the short side direction, and the distance c between the reinforcing steel bars a is 30-50 mm.
3. The concrete strain gauge protection bracket according to claim 2, wherein the fixing nut is welded on the steel bar b, the distance d between the fixing nut and the two ends of the steel bar b is 30mm, and the inner diameter of the fixing nut is 6-10 mm.
4. The concrete strain gauge protection bracket of claim 1, wherein the diameter of the threaded rod corresponds to the inner diameter of the fixing nut, and the threaded rod is fixed on the steel bar net through the fixing nut; the length of the threaded rod is selected according to the thickness of the wall body of the embedded strain gauge, and the selection range is 300-700 mm.
5. The concrete strain gauge protection bracket according to claim 2, wherein the V-shaped bracket is fixed at the second and fourth lower ends of the steel bar a in the long side direction, the included angle of the V-shaped bracket is 30-60 degrees, and the height h is 50-70 mm.
6. The concrete strain gauge protection bracket of claim 5, wherein the distance e between the fixing welding point of the V-shaped bracket and the end point of the steel bar a is 30-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920906911.9U CN210773998U (en) | 2019-06-17 | 2019-06-17 | Concrete strainometer protective cradle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920906911.9U CN210773998U (en) | 2019-06-17 | 2019-06-17 | Concrete strainometer protective cradle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210773998U true CN210773998U (en) | 2020-06-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920906911.9U Expired - Fee Related CN210773998U (en) | 2019-06-17 | 2019-06-17 | Concrete strainometer protective cradle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210773998U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523279A (en) * | 2021-01-08 | 2021-03-19 | 宿迁市高速铁路建设发展有限公司 | Auxiliary device for installing strain gauge in concrete |
| CN115565343A (en) * | 2022-09-27 | 2023-01-03 | 中交四公局第三工程有限公司 | Early warning monitoring method for karst tunnel structure safety |
| CN115808203A (en) * | 2022-11-24 | 2023-03-17 | 哈尔滨工业大学 | Protection device for pre-buried sensor in concrete and installation method |
-
2019
- 2019-06-17 CN CN201920906911.9U patent/CN210773998U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523279A (en) * | 2021-01-08 | 2021-03-19 | 宿迁市高速铁路建设发展有限公司 | Auxiliary device for installing strain gauge in concrete |
| CN112523279B (en) * | 2021-01-08 | 2022-03-29 | 宿迁市高速铁路建设发展有限公司 | Auxiliary device for installing strain gauge in concrete |
| CN115565343A (en) * | 2022-09-27 | 2023-01-03 | 中交四公局第三工程有限公司 | Early warning monitoring method for karst tunnel structure safety |
| CN115565343B (en) * | 2022-09-27 | 2024-05-03 | 中交雄安建设有限公司 | Early warning and monitoring method for karst tunnel structure safety |
| CN115808203A (en) * | 2022-11-24 | 2023-03-17 | 哈尔滨工业大学 | Protection device for pre-buried sensor in concrete and installation method |
| CN115808203B (en) * | 2022-11-24 | 2023-05-23 | 哈尔滨工业大学 | Protection device for embedded sensor in concrete and installation method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 |