CN211576793U - Concrete slab boundary restraint and loading device - Google Patents
Concrete slab boundary restraint and loading device Download PDFInfo
- Publication number
- CN211576793U CN211576793U CN201922356272.6U CN201922356272U CN211576793U CN 211576793 U CN211576793 U CN 211576793U CN 201922356272 U CN201922356272 U CN 201922356272U CN 211576793 U CN211576793 U CN 211576793U
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- fixed
- vertical
- pull rod
- bottom beam
- longitudinal hole
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- 239000004567 concrete Substances 0.000 title claims abstract description 39
- 230000000452 restraining effect Effects 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 13
- 239000011150 reinforced concrete Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a concrete plate boundary constraint and loading device, which comprises a vertical loading beam, a vertical pull rod, a fixed bottom beam and a fixed screw rod; the vertical loading beam is provided with a longitudinal hole, one end of the fixed bottom beam is provided with the longitudinal hole, the other end of the fixed bottom beam is provided with a longitudinal hole, the middle position of the fixed angle plate is provided with the longitudinal hole, the vertical pull rod is provided with a fixed end, one end of the vertical pull rod penetrates through the longitudinal hole of the vertical loading beam, and the other end of the vertical pull rod penetrates through the longitudinal hole nut at one end of the fixed bottom beam to be locked; the upper part of the fixed screw penetrates through the lower part of the longitudinal hole of the fixed bottom beam and is fixed in the bottom groove; the fixed angle plate is hinged with one end of the supporting inclined rod through a bolt pin, and the other end of the supporting inclined rod is hinged with the fixed end through a bolt pin. Exert force for concrete slab through the jack device during the experiment, the utility model discloses make concrete slab not take place to remove, the utility model discloses simple structure conveniently dismantles, removes, repacks, is adapted to various sizes and boundary condition's concrete slab experiment.
Description
Technical Field
The utility model relates to a concrete slab is experimental and test field among the building structure particularly, involves a concrete slab boundary restraint and loading device.
Background
Concrete slabs are one of the main components of building structures, and according to the test specifications of reinforced concrete structures, whether in actual engineering or in scientific research, it is often necessary to test reinforced concrete slabs to verify the structural properties of the reinforced concrete slabs. For example, in fire tests of building structures, reinforced concrete slabs are the main subject of investigation in fire tests. However, the size and boundary conditions of reinforced concrete slabs in building structures are different, the slab types are generally divided into unidirectional slabs and bidirectional slabs, and the boundary conditions are divided into solid support boundaries and simple support boundaries. The size of concrete panels varies from building structure to building structure, and the size of a floor is determined by the size of a room. In a civil engineering laboratory, various large test devices are installed at fixed positions and are generally incapable of moving, and a reaction frame loading device is installed at a specific position. Testing of concrete panels often faces situations where the test member size cannot be adapted to the loading device. In this case, in order to perform the test smoothly, the size of the concrete slab under study is generally adjusted, which limits the accuracy of the test study. If the equipment is rebuilt to adapt to the structural size of the concrete slab in each test, a large amount of manpower and material resources are consumed, and a large amount of waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a concrete slab boundary restraint and loading device, convenient dismantlement, removal, repacking are adapted to various types, size and boundary condition's concrete slab experiment.
In order to realize the purpose, the utility model adopts the following technical scheme:
a concrete plate boundary restraining and loading device comprises a vertical loading beam, a vertical pull rod, a fixed bottom beam and a fixed screw rod; one end of the vertical pull rod is fixedly connected with the vertical loading beam through a nut, the other end of the vertical pull rod is fixedly connected with the fixed bottom beam through a nut, and one end of the fixed screw rod is fixedly connected with the fixed bottom beam through a nut.
Furthermore, the other end of the fixing screw is fixedly connected with the ground groove through a bolt.
Furthermore, a longitudinal hole is formed in the middle of the vertical loading beam, a longitudinal hole is formed in one end of the fixed bottom beam, a fixed angle plate is arranged at the other end of the fixed bottom beam, a longitudinal hole is formed in the middle of the fixed bottom beam, and a fixed end is arranged on the vertical pull rod.
Furthermore, one end of the vertical pull rod penetrates through the longitudinal hole of the vertical loading beam, the other end of the vertical pull rod penetrates through the longitudinal hole of one end of the fixed bottom beam, the two ends of the vertical pull rod are locked through nuts, and the vertical pull rod is fixed with the vertical loading beam and the fixed bottom beam.
Furthermore, the fixing screw penetrates through a longitudinal hole in the middle of the fixing bottom beam, the inverted T-shaped structure is placed in the bottom groove, and the top of the inverted T-shaped structure is locked through the nut.
Furthermore, the fixed angle plate is hinged with one end of a supporting inclined rod through a bolt, the supporting inclined rod is hinged with the fixed bottom beam, the other end of the supporting inclined rod is hinged with the fixed end through a bolt, and the supporting inclined rod is hinged with the vertical pull rod.
Furthermore, a base plate is arranged at the joint of the vertical pull rod, the vertical loading beam and the fixed bottom beam, and a base plate is arranged at the joint of the fixed bottom beam and the fixed screw rod.
Has the advantages that:
the fixing screw rod is connected with the ground groove, the holding force of the ground groove is utilized, the dismounting, the moving and the refitting are convenient, and the concrete slab test bed can adapt to concrete slab tests with various sizes, types and boundary conditions. The device can apply various complex boundaries to concrete, and can apply fixed bending moment and vertical displacement constraint to the edge of a concrete plate through the vertical pull rod; horizontal plane internal forces, or a combination of vertical restraint and horizontal plane internal forces, may be applied to the concrete slab by the support diagonal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the vertical loading operation of the present invention;
FIG. 3 is a schematic view of the horizontal loading operation of the present invention;
wherein: 10. fixing the bottom beam; 11. fixing the screw rod; 20. a support diagonal rod; 21. fixing the angle plate; 22. fixing the end head; 30. a vertical pull rod; 31. a vertical load beam; 40. a jack device; 50. a ground groove; 60. a concrete slab; 70. a base plate; 80. a steel beam.
Detailed Description
In order to further explain the implementation manner of the present invention in detail, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 3, fig. 1 is a schematic structural diagram of the present invention, a concrete slab boundary restraining and loading device includes a vertical loading beam 31, a vertical pull rod 30, a fixed bottom beam 10, a fixed screw 11 and a supporting diagonal rod 20, a longitudinal hole is arranged at the middle position of the vertical loading beam 31, a fixed end 22 is arranged on the vertical pull rod 30, one end of the fixed bottom beam 10 is provided with a longitudinal hole, the other end is provided with a fixed angle plate 21, the fixed angle plate 21 is fixed on the fixed bottom beam 10 through a bolt, a longitudinal hole is arranged at the middle position of the fixed bottom beam 10, the upper end of the fixing screw 11 passes through the longitudinal hole at the middle position of the fixing bottom beam 10, the upper end of the fixing screw rod 11 penetrates through the fixed bottom beam 10 and is locked by a nut, and the joint of the fixing screw rod 11 and the fixed bottom beam 10 is connected by a backing plate 70; one end of the vertical pull rod 30 penetrates through a longitudinal hole in the middle of the vertical loading beam 31, the other end of the vertical pull rod penetrates through a longitudinal hole in one end of the fixed bottom beam 10, two ends of the vertical pull rod 30 penetrate through the vertical loading beam 31 and the fixed bottom beam 10, and two ends of the vertical pull rod 30 are locked through nuts; one end of the supporting diagonal rod 20 is hinged with the fixed angle plate 21 through a bolt, the supporting diagonal rod 20 is connected with the fixed bottom beam 10 through the fixed angle plate 21, the other end of the supporting diagonal rod 20 is hinged with the fixed end head 22 through a bolt, and the supporting diagonal rod 20 is connected with the vertical pull rod 30 through the fixed end head 22.
Example 1
As shown in fig. 2, fig. 2 is a process of applying a bracing constraint or a fixed bending moment to the boundary of a reinforced concrete slab 60.
In order to exert a solid support constraint or fixed bending moment on the boundary of a reinforced concrete slab 60 without supporting an inclined rod 20, when the device is used, a longitudinal hole is formed at the side of the concrete slab 60 so that a vertical pull rod 30 can penetrate through the concrete slab 60, the lower end of a fixing screw rod 11 is of an inverted T-shaped structure, the inverted T-shaped structure of the fixing screw rod 11 is placed in a ground groove 50, a fixing bottom beam 10 is fixed on the bottom surface, a jack device 40 is placed on the boundary of the concrete slab 60, the other end of the jack device 40 is in contact with a vertical loading beam 31, and the jack device 40 fixes the jack device 40 by means of friction force when pressure is exerted on the jack device 40 so that the jack device 40 and the concrete slab 60; the jack device 40 is used to apply a desired pressure or a fixed bending moment, and the value of the bending moment is stabilized by controlling the pressure value of the jack device 40.
Example 2
As shown in fig. 3, fig. 3 is a process of applying a horizontal internal force to a reinforced concrete slab 60, a vertical loading beam 31 is removed, the lower end of a fixing screw 11 is of an inverted T-shaped structure, the inverted T-shaped structure of the fixing screw 11 is placed in a ground groove 50, a fixing bottom beam 10 is fixed on a bottom surface, a jack device 40 is arranged on a vertical height surface of the concrete slab 60, the jack device 40 is connected with one surface of a steel beam 80, the other surface of the steel beam 80 is connected with a vertical pull rod 30, the steel beam 80 plays a supporting role, the steel beam 80 is stabilized by a laboratory crane when being installed, a required pressure is applied by using the jack device 40, the jack device 40 is fixed by a friction force when the jack device 40 applies the required pressure, the jack device 40 is fixed with the steel beam 80, and the steel beam 80 is fixed with the vertical pull rod 30; the load can be kept stable during the experiment by controlling the pressure of the jack device 40.
The vertical load beam 31 and the fixed bottom beam 10 are provided with longitudinal holes, which are weak links, and in order to avoid stress concentration of the contact area of the nut and the structure from damaging the structure, the vertical load beam and the fixed bottom beam are connected by using a base plate 70 in the contact area.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a concrete slab boundary restraint and loading device which characterized in that: the device comprises a vertical loading beam, a vertical pull rod, a fixed bottom beam and a fixed screw rod; one end of the vertical pull rod is fixedly connected with the vertical loading beam through a nut, the other end of the vertical pull rod is fixedly connected with the fixed bottom beam through a nut, and one end of the fixed screw rod is fixedly connected with the fixed bottom beam through a nut.
2. The concrete panel boundary restraining and loading apparatus of claim 1, wherein: the other end of the fixing screw rod is fixedly connected with the ground groove through a bolt.
3. The concrete panel boundary restraining and loading apparatus of claim 1, wherein: the middle of the vertical loading beam is provided with a longitudinal hole, one end of the fixed bottom beam is provided with a longitudinal hole, the other end of the fixed bottom beam is provided with a fixed angle plate, the middle position of the fixed bottom beam is provided with a longitudinal hole, and the vertical pull rod is provided with a fixed end.
4. The concrete panel boundary restraining and loading apparatus of claim 3, wherein: one end of the vertical pull rod penetrates through the longitudinal hole of the vertical loading beam, the other end of the vertical pull rod penetrates through the longitudinal hole of one end of the fixed bottom beam, two ends of the vertical pull rod are locked through nuts, and the vertical pull rod is fixed with the vertical loading beam and the fixed bottom beam.
5. The concrete panel boundary restraining and loading apparatus of claim 3, wherein: the fixing screw penetrates through a longitudinal hole in the middle of the fixing bottom beam, the inverted T-shaped structure is placed in the bottom groove, and the top of the inverted T-shaped structure is locked through the nut.
6. The concrete panel boundary restraining and loading apparatus of claim 3, wherein: the fixed angle plate is hinged with one end of the supporting diagonal rod through a bolt, the supporting diagonal rod is hinged with the fixed bottom beam, the other end of the supporting diagonal rod is hinged with the fixed end through a bolt, and the supporting diagonal rod is hinged with the vertical pull rod.
7. The concrete panel boundary restraining and loading apparatus of claim 1, wherein: the joint of the vertical pull rod, the vertical loading beam and the fixed bottom beam is provided with a base plate, and the joint of the fixed bottom beam and the fixed screw rod is provided with a base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922356272.6U CN211576793U (en) | 2019-12-25 | 2019-12-25 | Concrete slab boundary restraint and loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922356272.6U CN211576793U (en) | 2019-12-25 | 2019-12-25 | Concrete slab boundary restraint and loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211576793U true CN211576793U (en) | 2020-09-25 |
Family
ID=72549066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922356272.6U Expired - Fee Related CN211576793U (en) | 2019-12-25 | 2019-12-25 | Concrete slab boundary restraint and loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211576793U (en) |
-
2019
- 2019-12-25 CN CN201922356272.6U patent/CN211576793U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |