CN221029586U - Expansion joint notch structure - Google Patents
Expansion joint notch structure Download PDFInfo
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- CN221029586U CN221029586U CN202323041675.4U CN202323041675U CN221029586U CN 221029586 U CN221029586 U CN 221029586U CN 202323041675 U CN202323041675 U CN 202323041675U CN 221029586 U CN221029586 U CN 221029586U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 109
- 239000010959 steel Substances 0.000 claims abstract description 109
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims description 29
- 239000002344 surface layer Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides an expansion joint slot structure, which belongs to the technical field of bridge expansion joints and comprises a reserved slot arranged in a beam body, wherein a bottom steel plate is arranged at the bottom of the reserved slot, side steel plates are arranged at the side edges of the reserved slot, and a group of shear nails are uniformly distributed on the bottom steel plate and the side steel plates; a limiting block is arranged at the upper part of the side steel plate, a steel butt strap is arranged on the upper surface of the limiting block, and one end of the steel butt strap, which is far away from the side steel plate, is fixed on the Z-shaped steel; when temporary passing is needed, an expansion joint is placed in the reserved notch, the fixing device is fixed with the expansion joint, and the expansion joint is welded on the bottom steel plate; when the upper layer is paved, cutting the welding part of the expansion joint and the bottom steel plate, taking out the expansion joint, and equidistantly welding the welding steel plates onto the side steel plates and the bottom steel plate; the invention fundamentally solves the problems of difficult installation caused by the embedded bars and no material garbage in the notch in the temporary driving stage, is clean and beautiful, and improves the installation efficiency.
Description
Technical Field
The invention relates to the technical field of bridge expansion joints, in particular to an expansion joint notch structure.
Background
The bridge expansion joint is to set up the expansion joint between two beam ends, between beam end and bridge abutment or the hinge position of bridge in order to meet the bridge deck requirement of warp, require the expansion joint to be in parallel, perpendicular to two directions of bridge axis, both can freely stretch out and draw back, firm reliable, its effect is that the expansion and the shrink of adjusting the bridge deck under temperature change, concrete shrink and load effect, prevents that the bridge from receiving too big pulling force.
The bridge expansion joint is usually installed through an expansion joint notch, and embedded bars of the existing expansion joint notch at the pouring stage are often different in height and different in interval, so that great difficulty is caused to the installation of the expansion joint; in addition, in the temporary traffic stage in the reconstruction and expansion engineering, traffic is usually carried out only after asphalt sand materials are backfilled without any treatment, and great potential safety hazards exist; finally, in the installation stage of the expansion joint, the installation unit reversely digs a cleaning groove area, and the asphalt sand filled before falls to the crown of the pier to cause secondary cleaning, so that the time and the labor are wasted, and the installation period of the expansion joint is prolonged.
Disclosure of Invention
The invention aims to: the invention aims to provide an expansion joint notch structure, which aims at overcoming the defects that in the prior art, expansion joint installation is difficult and potential safety hazard is large in a temporary traffic stage due to inconsistent heights of embedded bars in an expansion joint notch, and the problem that the installation is difficult caused by the embedded bars and material garbage is not contained in the notch in the temporary traffic stage is solved radically, so that the expansion joint notch structure is clean and attractive, and the installation efficiency is improved.
The technical scheme is as follows: the invention relates to an expansion joint notch structure, which comprises a reserved notch arranged in a beam body, wherein a bottom steel plate is arranged at the bottom of the reserved notch, side steel plates are arranged at the side edges of the reserved notch, and a group of shear nails are uniformly distributed on the bottom steel plate and the side steel plates; the upper portion of side steel sheet is provided with the stopper, and the upper surface of stopper is provided with the steel strap, and the one end that the steel strap kept away from the side steel sheet is fixed on fixing device.
The shear nails, the steel plates on the side surfaces of the notch and the steel plates on the bottom of the notch are embedded into the notch when the beam body is prefabricated, and meanwhile, the height of the notch is controlled to be the height of the expansion joint when the beam body is prefabricated.
When the middle surface layer needs temporary passing, an expansion joint is placed in the reserved notch, the fixing device is fixed with the expansion joint, and the expansion joint is welded on the bottom steel plate; when the upper layer is paved, the welding part of the expansion joint and the bottom steel plate is cut, the expansion joint is taken out, and the welding steel plates are equidistantly welded on the side steel plates and the bottom steel plate.
Further, the fixing device is Z-shaped steel, the Z-shaped steel comprises a main body plate, a first bending plate and a second bending plate are respectively arranged at two ends of the main body plate, the first bending plate and the second bending plate are perpendicular to the main body plate, and the first bending plate and the second bending plate extend towards opposite directions; one side of the middle part of the main body plate, which is consistent with the first bending plate, is provided with a web plate, a clamping groove is formed between the first bending plate and the web plate, a lap groove is formed between the web plate and the main body plate, and one side of the upper part of the main body plate, which is consistent with the second bending plate, is provided with a protruding edge. Due to the arrangement of the novel Z-shaped steel, the novel Z-shaped steel can be well matched with the steel butt strap to form a tightly combined mechanical support body, so that the novel Z-shaped steel plays a role in stabilizing and supporting.
Further, the steel butt strap is provided with a plugboard at a position corresponding to the Z-shaped steel, and when the Z-shaped steel is fixed with the steel butt strap, the plugboard is inserted into the clamping groove; one end of the Z-shaped steel, which is far away from the limiting block, is lapped on the lapping groove; because the size is designed in advance, the inserting plate and the clamping groove are just clamped tightly, and the other end of the steel strap can be lapped on the lapping groove, so that the height of the steel strap is not higher than that of the notch.
Further, the expansion joint comprises a main body and an anchor ring positioned below the main body, when temporary passing is needed, the expansion joint main body is welded with the first bending plate, and the anchor ring is welded with the bottom steel plate.
Further, counter bores are formed in positions, corresponding to the limiting blocks, of the steel butt strap, the counter bores are aligned with through holes in the limiting blocks, and the limiting blocks are fixed through bolts and nuts, so that the limiting blocks and the steel butt strap can be conveniently and rapidly installed or detached.
Further, the distance between the upper surface of the limiting block and the reserved notch is the thickness of the steel butt strap.
The beneficial effects are that: compared with the prior art, the invention has the advantages that:
(1) According to the invention, as the bottom steel plate, the side steel plates and the shear nails are pre-embedded into the notch when the beam body is prefabricated, no pre-embedded bars are needed, and thus the difficulty in installation of the expansion joint due to inconsistent heights of the pre-embedded bars is avoided;
(2) When the middle surface layer is temporarily communicated, an expansion joint is placed in the reserved notch, the Z-shaped steel is welded with the main body of the expansion joint, and the anchor ring of the expansion joint is welded on the bottom steel plate, so that the stability of the expansion joint when being pressed by a heavy vehicle can be ensured; compared with the traditional method of backfilling the notch by using asphalt sand stone and the like, the device is clean and beautiful, and is not easy to be extruded and deformed without being cleaned by personnel, thereby improving the installation efficiency;
(3) When an upper layer is paved, the welding part of the expansion joint and the bottom steel plate is cut, the expansion joint is taken out, the welding steel plates are equidistantly welded on the side steel plates and the bottom steel plate, then the anchor ring of the expansion joint is welded on the welding steel plates, the upper plane of the expansion joint is ensured to be level with the upper layer, and finally C50 steel fiber concrete is poured; after the steel plate is adopted, the welding area of the anchor ring and the steel plate is enlarged, and the anchoring property is improved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in a temporary traffic situation;
FIG. 2 is a schematic view of the structure of the present invention in the case of paving an upper layer;
fig. 3 is a schematic structural view of the Z-section steel of the present invention.
Detailed Description
The technical scheme of the invention is described in detail below through the drawings, but the protection scope of the invention is not limited to the embodiments.
The expansion joint notch structure as shown in fig. 1-2 comprises a reserved notch arranged in a beam body 6, wherein a bottom steel plate 7 is arranged at the bottom of the reserved notch, side steel plates 5 are respectively arranged on two side edges of the reserved notch, shear nails 8 are uniformly distributed on the bottom steel plate 7 and the side steel plates 5 on two sides, and the shear nails are arranged at intervals of 10cm between every two shear nails. Limiting blocks 2 are arranged on the upper portions and opposite positions of the side steel plates 5 on two sides, only through holes are formed in the limiting blocks, and steel butt straps 3 are arranged on the upper surface of each limiting block 2. In order to make the height of the reserved notch consistent, the distance from the upper surface of the limiting block 2 to the reserved notch is the thickness of the steel butt strap 3.
One end of the steel butt strap is fixed with the limiting block, a counter bore is arranged at the position of the steel butt strap 3 corresponding to the limiting block 2, the counter bore is aligned with a through hole on the limiting block 2, and one end, far away from the side steel plate 5, of the fixed butt strap 3 is fixed on the Z-shaped steel 13 through the bolts 1 and the nuts 4.
As shown in fig. 3, the Z-shaped steel 13 includes a main body plate 13-1, and both ends of the main body plate 13-1 are respectively provided with a first bending plate 13-2 and a second bending plate 13-3, the first bending plate 13-2 and the second bending plate 13-3 are perpendicular to the main body plate, and the first bending plate 13-2 and the second bending plate 13-3 extend in opposite directions; the middle part of the main body plate 13-1 is provided with a web 13-4 on one side consistent with the first bending plate 13-2, a clamping groove 13-6 is formed between the first bending plate 13-2 and the web 13-4, the steel butt strap 3 is provided with a plugboard 3-1 at a position corresponding to the Z-shaped steel 13, and when the Z-shaped steel 13 is fixed with the steel butt strap 3, the plugboard 3-1 is inserted into the clamping groove 13-6. A lap groove 13-7,Z is formed between the web plate 13-4 and the main body plate 13-1, one end of the section steel 13, which is far away from the limiting block 2, is lapped on the lap groove 13-7, and the upper surfaces of the lap groove 13-7,Z and the main body plate are flush. The upper part of the main body plate 13-1 is provided with a protruding edge 13-5 on one side consistent with the second bending plate 13-3, and a water stop belt 14 of an expansion joint is connected between the two opposite protruding edges 13-5 and used for preventing rainwater, dust, sundries and the like from entering the internal structure of the expansion joint to influence expansion.
The working method comprises the following steps:
Firstly, the shear nails 8, the steel plates 5 on the side surfaces of the notch and the steel plates 7 on the bottom of the notch are embedded into the notch when the beam body is prefabricated, and meanwhile, the height of the notch is controlled to be the height of the expansion joint when the beam body is prefabricated.
In addition, the expansion joint comprises a main body and an anchor ring 9 positioned below the main body, and the anchor ring 9 of the expansion joint is welded with the bottom steel plate 7 in the temporary traffic stage of the middle surface layer; when the upper layer 10 is paved, the welding part of the anchor ring 9 of the expansion joint and the bottom steel plate is cut, the expansion joint is taken out, the welding steel plates 12 are welded on the side steel plates and the bottom steel plate at equal intervals, the anchor ring of the expansion joint is welded on the welding steel plates, the upper plane of the expansion joint is ensured to be level with the upper layer, and finally the C50 steel fiber concrete 11 is poured.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides an expansion joint notch structure, includes the reservation notch that sets up in the roof beam body (6), its characterized in that: the bottom of the reserved notch is provided with a bottom steel plate (7), the side edge of the reserved notch is provided with a side steel plate (5), and a group of shear nails (8) are uniformly distributed on the bottom steel plate (7) and the side steel plate (5); a limiting block (2) is arranged at the upper part of the side steel plate (5), a steel butt strap (3) is arranged on the upper surface of the limiting block (2), and one end, far away from the side steel plate (5), of the steel butt strap (3) is fixed on a fixing device;
When the middle surface layer needs temporary passing, an expansion joint is placed in the reserved notch, the fixing device is fixed with the expansion joint, and the expansion joint is welded on the bottom steel plate (7); when the upper surface layer (10) is paved, the welding part of the expansion joint and the bottom steel plate is cut, the expansion joint is taken out, and the welding steel plates (12) are equidistantly welded to the side steel plates (5) and the bottom steel plate (7).
2. The expansion joint slot structure according to claim 1, wherein: the fixing device is Z-shaped steel (13), the Z-shaped steel (13) comprises a main body plate (13-1), a first bending plate (13-2) and a second bending plate (13-3) are respectively arranged at two ends of the main body plate (13-1), the first bending plate (13-2) and the second bending plate (13-3) are perpendicular to the main body plate, and the first bending plate (13-2) and the second bending plate (13-3) extend towards opposite directions; one side of the middle part of the main body plate (13-1) which is consistent with the first bending plate (13-2) is provided with a web plate (13-4), a clamping groove (13-6) is formed between the first bending plate (13-2) and the web plate (13-4), a lap groove (13-7) is formed between the web plate (13-4) and the main body plate (13-1), and one side of the upper part of the main body plate (13-1) which is consistent with the second bending plate (13-3) is provided with a protruding edge (13-5).
3. The expansion joint slot structure according to claim 2, wherein: the steel butt strap (3) is provided with a plugboard (3-1) at a position corresponding to the Z-shaped steel (13), and when the Z-shaped steel (13) is fixed with the steel butt strap (3), the plugboard (3-1) is inserted into the clamping groove (13-6); one end of the Z-shaped steel (13) far away from the limiting block (2) is lapped on the lapping groove (13-7).
4. A slot structure for an expansion joint according to claim 3, wherein: the expansion joint comprises a main body and an anchor ring (9) positioned below the main body, when temporary passing is needed, the expansion joint main body is welded with the first bending plate (13-2), and the anchor ring (9) is welded with the bottom steel plate (7).
5. The expansion joint slot structure according to claim 1, wherein: the steel butt strap (3) is provided with a counter bore at a position corresponding to the limiting block (2), the counter bore is aligned with a through hole on the limiting block (2), and the steel butt strap is fixed through a bolt (1) and a nut (4).
6. The expansion joint slot structure according to claim 1, wherein: the distance between the upper surface of the limiting block (2) and the reserved notch is the thickness of the steel butt strap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323041675.4U CN221029586U (en) | 2023-11-10 | 2023-11-10 | Expansion joint notch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323041675.4U CN221029586U (en) | 2023-11-10 | 2023-11-10 | Expansion joint notch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221029586U true CN221029586U (en) | 2024-05-28 |
Family
ID=91184280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323041675.4U Active CN221029586U (en) | 2023-11-10 | 2023-11-10 | Expansion joint notch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221029586U (en) |
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2023
- 2023-11-10 CN CN202323041675.4U patent/CN221029586U/en active Active
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