CN219908566U - Bridge expansion joint structure - Google Patents
Bridge expansion joint structure Download PDFInfo
- Publication number
- CN219908566U CN219908566U CN202321021669.XU CN202321021669U CN219908566U CN 219908566 U CN219908566 U CN 219908566U CN 202321021669 U CN202321021669 U CN 202321021669U CN 219908566 U CN219908566 U CN 219908566U
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- CN
- China
- Prior art keywords
- channel steel
- expansion joint
- steel
- joint structure
- trusses
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- 229910000831 Steel Inorganic materials 0.000 claims description 95
- 239000010959 steel Substances 0.000 claims description 95
- 239000010426 asphalt Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims 2
- 238000004873 anchoring Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
- Road Paving Structures (AREA)
Abstract
The utility model discloses a bridge expansion joint structure, and belongs to the technical field of bridges. The structure comprises two concrete plates and two trusses, wherein a gap A is reserved between the two concrete plates, the two trusses are buried in the two concrete plates in one-to-one correspondence, one ends of the two trusses extend into the gap A, and a telescopic piece is arranged between the two trusses. The truss stress system is formed by the trusses, so that the truss has good overall stability and high rigidity, the truss deforms little under the repeated action of vehicle load, and the bearing capacity and the service life of the expansion joint structure are improved.
Description
Technical Field
The utility model relates to a bridge expansion joint structure, and belongs to the technical field of bridges.
Background
In order to meet the requirement of bridge deck deformation, expansion joints are usually arranged between two beam ends, between a beam end and a bridge abutment or at the hinge position of a bridge. The expansion joint is required to be freely telescopic in two directions parallel and perpendicular to the axis of the bridge, so that the expansion joint is firm and reliable, and the vehicle is smooth and free from sudden jump and noise when running. Once the expansion device of the bridge is destroyed, the speed, the comfort and the safety of driving are seriously affected, and even driving safety accidents are caused. In the use process of the expansion joint, sundries are easy to fall into the expansion joint to block, if the inside of the joint is all the garbage and dust and gravel, the expansion amount of the expansion joint can not reach the expansion standard of the original design of the bridge, and the safety use of the bridge is directly affected.
The chinese patent literature of publication No. CN212670278U discloses a novel waterproof dustproof bridge expansion joint part, including left channel-section steel and right channel-section steel, left channel-section steel is located right channel-section steel left side, be provided with first blotter, second blotter and sealed cushion between left channel-section steel and the right channel-section steel, sealed cushion is located the second blotter upside, the second blotter is located first blotter upside, left channel-section steel and right channel-section steel downside all are connected with adjusting screw through the screw thread, and left channel-section steel downside welded fastening has the picture peg, right channel-section steel downside welded fastening has U-shaped extension board, the picture peg is pegged graft on U-shaped extension board, and U-shaped extension board left part is located left channel-section steel downside, picture peg right part is located right channel-section steel downside, left side and right channel-section steel right side all welded fastening have U-shaped mount. Through setting up first blotter, second blotter, sealed cushion, picture peg and U-shaped extension board, realized multiple waterproof and dirt-proof purpose, waterproof and dirt-proof effectual, also convenient dismouting to sealed cushion and second blotter is changed simultaneously, has improved life, has also improved the atress stability to channel-section steel and right channel-section steel, supports the steadiness height.
However, under the repeated action of the vehicle load, the U-shaped fixing frame in the expansion joint part is easy to deform, so that the overall stability and the stress effect of a structural stress system formed by the U-shaped fixing frame and the channel steel are reduced, and the expansion joint is further damaged.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a bridge expansion joint structure.
The utility model is realized by the following technical scheme:
the utility model provides a bridge expansion joint structure, includes two concrete slabs and two trusses, two leave gap A between the concrete slab, two the truss one-to-one buries in two concrete slabs, and in one of them one end of two trusses all extends gap A, two be equipped with the extensible member between the truss.
And an asphalt layer is paved on the concrete slab.
The concrete slab is a C35 micro-expansive concrete slab.
The two trusses are symmetrically arranged.
The truss comprises double-spliced channel steel, a plurality of channel steel A are arranged on one side of the double-spliced channel steel side by side, one end, close to the double-spliced channel steel, of the channel steel A is connected with one end, far away from the double-spliced channel steel, of the adjacent channel steel A through connecting steel bars, and one end, far away from the double-spliced channel steel, of the channel steel A is connected with one end, close to the double-spliced channel steel, of the adjacent channel steel A through connecting steel bars.
And the channel steel A is perpendicular to the double-spliced groove steel.
The channel steel A is made of No. 5 channel steel, and the double-spliced groove steel is made of No. 10 channel steel.
The steel bar net piece is arranged on the truss, and the steel bar net piece is positioned in the concrete slab.
The telescopic piece is a rubber plate.
A plurality of L-shaped supporting pieces are arranged at intervals at the bottom of one truss, and the L-shaped supporting pieces are in contact with the bottom surface of the telescopic piece.
The utility model has the beneficial effects that: the truss stress system is formed by the trusses, so that the overall stability is good, the rigidity is high, the truss deforms little under the repeated action of the vehicle load, and the bearing capacity and the service life of the expansion joint structure are improved.
Drawings
FIG. 1 is a schematic top view of the present utility model without illustrating a concrete slab and asphalt layer;
FIG. 2 is a cross-sectional view taken along line I-I of FIG. 1;
FIG. 3 is a cross-sectional view taken along line II-II of FIG. 1.
In the figure: 1-connecting steel bars, 2-channel steel A, 3-double-spliced channel steel, 4-telescopic parts, 5-steel bar meshes, 6-concrete plates, 7-asphalt layers and 8-L-shaped supporting parts.
Detailed Description
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
As shown in fig. 1 to 3, the bridge expansion joint structure of the utility model comprises two concrete plates 6 and two trusses, wherein a gap A is reserved between the two concrete plates 6, the two trusses are embedded in the two concrete plates 6 in one-to-one correspondence, one ends of the two trusses extend into the gap A, and an expansion piece 4 is arranged between the two trusses. The truss stress system is formed by the trusses, so that the overall stability is good, the rigidity is high, the truss deforms little under the repeated action of the vehicle load, and the bearing capacity and the service life of the expansion joint structure are improved.
An asphalt layer 7 is laid on the concrete slab 6.
The concrete slab 6 is a C35 micro-expansive concrete slab. Traditional post-pouring anchor concrete for the expansion joint is plain concrete, the tensile capacity of the plain concrete is poor, the concrete is easy to crack under repeated action of vehicle load, and the concrete crack can cause the failure of expansion joint function under repeated erosion of rainwater. According to the utility model, the No. 5 channel steel A2 is used as the anchoring section steel, the reinforcing mesh 5 is paved on the anchoring section steel, and then the C35 micro-expansion concrete is poured, so that the formed post-pouring concrete slab 6 has high strength and strong tensile strength, is not easy to crack or delaminate with a bridge concrete joint, and prolongs the service life compared with the traditional post-pouring expansion joint concrete slab.
The two trusses are symmetrically arranged.
The truss comprises double-spliced channel steel 3, a plurality of channel steel A2 are welded on one side of the double-spliced channel steel 3 side by side, one end, close to the double-spliced channel steel 3, of the channel steel A2 is connected with one end, far away from the double-spliced channel steel 3, of the adjacent channel steel A2 through a connecting steel bar 1, and one end, far away from the double-spliced channel steel 3, of the channel steel A2 is connected with one end, close to the double-spliced channel steel 3, of the adjacent channel steel A2 through the connecting steel bar 1. When in use, the channel steel A2 and the connecting steel bars 1 are positioned in the concrete slab 6, and the double-spliced channel steel 3 is positioned outside the concrete slab 6.
The channel steel A2 is perpendicular to the double-spliced groove steel 3. The welding seam grade of the channel steel A2 and the double-spliced groove steel 3 can meet the requirement of more than two stages.
The channel steel A2 is made of No. 5 channel steel, and the double-spliced groove steel 3 is made of No. 10 channel steel.
The steel bar net piece 5 is welded on the truss, and the steel bar net piece 5 is positioned in the concrete slab 6.
The telescopic piece 4 is a rubber plate. When the bridge heats up and expands, the compression deformation of the rubber plate can meet the compression deformation requirement of the bridge, and as the two trusses are not connected and a certain gap is reserved between the two trusses, the two trusses can freely move to meet the expansion requirement of the bridge body when the bridge body is cooled down.
A plurality of L-shaped supporting pieces 8 are arranged at intervals at the bottom of one truss, and the L-shaped supporting pieces 8 are in contact with the bottom surface of the telescopic piece 4. In use, the L-shaped support member 8 is made of 5/3.2L-shaped angle steel and is used for supporting the telescopic member 4, so that the telescopic member 4 is prevented from collapsing under the vibration of the load of the vehicle.
The utility model relates to a bridge expansion joint structure, which comprises the following construction methods:
A. prefabricating a truss of the telescopic joint, fixedly installing the truss in the telescopic joint in advance, connecting channel steel A2 by adopting a connecting steel bar 1, paving a steel bar net sheet 5 on the channel steel A2, and then installing an end template;
B. firstly pouring C35 micro-expansive concrete into a truss to form a concrete slab 6, and pouring an asphalt layer 7 after the strength of the concrete slab 6 meets the requirement;
D. and rubber plates are stuffed in the expansion joint between the two double-spliced groove steel 3, so that the expansion joint is stuffed with the rubber plates.
Claims (10)
1. The utility model provides a bridge expansion joint structure which characterized in that: the concrete slab (6) and two trusses are included, a gap A is reserved between the two concrete slabs (6), the two trusses are buried in the two concrete slabs (6) in one-to-one correspondence, one ends of the two trusses extend into the gap A, and a telescopic piece (4) is arranged between the two trusses.
2. The bridge expansion joint structure according to claim 1 wherein: an asphalt layer (7) is paved on the concrete slab (6).
3. The bridge expansion joint structure according to claim 1 wherein: the concrete slab (6) is a C35 micro-expansive concrete slab.
4. The bridge expansion joint structure according to claim 1 wherein: the two trusses are symmetrically arranged.
5. The bridge expansion joint structure according to claim 1 wherein: the truss comprises double-spliced channel steel (3), a plurality of channel steel A (2) are arranged on one side of the double-spliced channel steel (3) side by side, one end, close to the double-spliced channel steel (3), of the channel steel A (2 is connected with one end, far away from the double-spliced channel steel (3), of the adjacent channel steel A (2 through a connecting reinforcing steel (1), and one end, close to the double-spliced channel steel (3), of the channel steel A (2) is connected with one end, close to the double-spliced channel steel (3), of the adjacent channel steel A (2) through the connecting reinforcing steel (1).
6. The bridge expansion joint structure according to claim 5 wherein: the channel steel A (2) is perpendicular to the double-spliced groove steel (3).
7. The bridge expansion joint structure according to claim 5 wherein: the channel steel A (2) is made of No. 5 channel steel, and the double-spliced channel steel (3) is made of No. 10 channel steel.
8. The bridge expansion joint structure according to claim 1 wherein: the steel bar net piece (5) is arranged on the truss, and the steel bar net piece (5) is positioned in the concrete slab (6).
9. The bridge expansion joint structure according to claim 1 wherein: the telescopic piece (4) is a rubber plate.
10. The bridge expansion joint structure according to claim 1 wherein: a plurality of L-shaped supporting pieces (8) are arranged at intervals at the bottom of one truss, and the L-shaped supporting pieces (8) are in contact with the bottom surface of the telescopic piece (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321021669.XU CN219908566U (en) | 2023-04-28 | 2023-04-28 | Bridge expansion joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321021669.XU CN219908566U (en) | 2023-04-28 | 2023-04-28 | Bridge expansion joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219908566U true CN219908566U (en) | 2023-10-27 |
Family
ID=88439311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321021669.XU Active CN219908566U (en) | 2023-04-28 | 2023-04-28 | Bridge expansion joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219908566U (en) |
-
2023
- 2023-04-28 CN CN202321021669.XU patent/CN219908566U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |