CN216892068U - External prestress reinforcing and steering device for steel-mixed composite beam bridge - Google Patents
External prestress reinforcing and steering device for steel-mixed composite beam bridge Download PDFInfo
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- CN216892068U CN216892068U CN202220063067.XU CN202220063067U CN216892068U CN 216892068 U CN216892068 U CN 216892068U CN 202220063067 U CN202220063067 U CN 202220063067U CN 216892068 U CN216892068 U CN 216892068U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The utility model relates to the technical field of bridge reinforcement, in particular to an external prestress reinforcement steering device for a steel-mixed composite beam bridge. The construction is convenient, the stress performance is good, and the overall performance is good. The technical scheme includes that the bridge structure comprises 2 groups of closed cavities with the same structure, each group of closed cavities comprises a steel pipe and a partition plate, the steel pipe is welded on one side of the partition plate, the other end of the steel pipe is welded on a transverse partition plate of the bridge structure, a circle of prestressed steel bundle through holes are uniformly distributed in the circumferential direction of the partition plate and the partition plate, prestressed steel strands penetrate through the prestressed steel bundle through holes on the opposite axial line, cement-based grouting materials are respectively poured into the 2 steel pipes, and the cement-based grouting materials are poured into the steel pipes through feeding holes formed in the steel pipes.
Description
Technical Field
The utility model relates to the technical field of bridge reinforcement, in particular to an external prestress reinforcement steering device for a steel-mixed composite beam bridge.
Background
The steering device is a unique component of the external prestressed steel beam connected with the prestressed stress structure in span, is a key structure for external prestressed reinforcement, and the design of the steering structure is directly related to the reinforcement effect and the durability of the structure.
The steering device is used for transmitting horizontal and vertical transverse forces generated by the external beam, limiting the free length of the external beam and adjusting the eccentricity of the external beam. In order to ensure that the shape of the external prestressed steel beam is consistent with that of the original structure deflection line, the shape of the external prestressed steel beam is adjusted by reasonably arranging a steering device, so that the bending resistance and the shearing resistance of the structure can be changed, and the stress of the structure is more reasonable. Once the design is not reasonable, the structural measures are not proper or the external prestressed tendons are not positioned accurately, the steering device is stressed unreasonably, and local hardening of the prestressed tendons or excessive friction loss can be caused.
The conventional steering device has the defects of complex construction, poor structural integrity and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a steel-mixed composite beam bridge external prestress reinforcing steering device, which is convenient and fast to construct, good in stress performance and good in overall performance, and aims to solve the problems that the existing steering device is complex in construction and poor in integrity.
In order to solve the problems in the prior art, the technical scheme of the utility model is as follows: the utility model provides a steel-aliasing closes external prestressing force of girder bridge and consolidates steering apparatus which characterized in that: including 2 airtight cavities that the group structure is the same, every airtight cavity of group includes steel pipe and baffle, the steel pipe weld in one side of baffle, the other end of steel pipe weld on bridge construction's cross slab, the circumference equipartition of baffle and cross slab be provided with round prestressing steel bundle clearing hole, relative epaxial prestressing steel bundle passes through downthehole prestressing steel strand wires of wearing to be equipped with, pours into cement base grouting material in 2 steel pipes respectively.
And further, the cement-based grouting material is poured through a feeding hole formed in the steel pipe.
Furthermore, reinforcing ribs are welded on the steel pipe.
Furthermore, the joint of the steel pipe and the diaphragm plate is sealed by waterproof sealant.
Compared with the prior art, the utility model has the following advantages:
1. the steering device of the utility model is integrated with the diaphragm plate of the original bridge structure, so that the steering device is well stressed and has better integral performance;
2. the utility model has convenient construction and can effectively shorten the construction period.
Drawings
FIG. 1 is a plan view of the steering apparatus of the present invention;
FIG. 2 is a side view of the steering apparatus of the present invention;
FIG. 3 is an elevational view of the steering apparatus of the present invention;
FIG. 4 is a longitudinal section layout view of in vitro prestressed steel bundles;
fig. 5 is a cross-section layout view of an external prestressed steel strand span (1 # beam).
Description of the labeling: 1-cement-based grouting material; 2-a steering device; 3-diaphragm plate; 4-welding seams; 5-reinforcing ribs; 6-a feed hole; 7-phi 114 steel pipe; 8-a baffle plate; 9-waterproof sealant; 10-prestressed steel strands.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The utility model relates to a steel-aliasing composite beam bridge external prestress reinforcing and steering device, which comprises 2 groups of closed cavities with the same structure, each group of closed cavities comprises a steel pipe 7 and a baffle plate 8, the steel pipe 7 is welded on one side of the baffle plate 8, the other end of the steel pipe 7 is welded on a diaphragm plate 3 of a bridge structure, a circle of prestress steel beam through holes are uniformly distributed in the circumferential direction of the baffle plate 8 and the diaphragm plate 3, prestress steel beams on opposite axes penetrate through the prestress steel beam through holes 10, cement-based grouting material 1 is respectively filled in the 2 steel pipes 7 for filling, reinforcing ribs 5 are welded on the steel pipes 7, and the structural rigidity is improved.
The cement-based grouting material 1 is poured through a feeding hole 6 formed in the steel pipe 7, and when the discharge hole overflows, the cement-based grouting material is full.
The joints of the steel pipes 7, the left baffle plate 8, the right baffle plate 8 and the diaphragm plate 3 are sealed by waterproof sealant 9.
The steel pipe 7 is a steel pipe of phi 114.
The construction process of the utility model is shown in fig. 4 and 5:
1) prestressed steel beam through holes are uniformly distributed on the baffle 8 and the diaphragm plate 3 of the bridge structure, so that the baffle 8 is ensured to be aligned with the holes of the diaphragm plate 3.
2) Symmetrically welding the diaphragm plate 3, the steel pipe 7 and the steel plate with the hole for the prestressed steel beam 10 into a whole to form a sealing device; welding the reinforcing rib 5 and the steel pipe 7 into a whole through the fillet weld 4, and improving the structural rigidity;
3) symmetrically forming holes in the upper part of the steel pipe 7 to serve as a feed inlet of the cement-based grouting material 1;
4) the gaps between the steel plates are sealed by waterproof sealant 9, and cement-based grouting material 1 is filled in the sealing device.
5) And finally, tensioning the external prestressed steel bundles in a grading manner.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (4)
1. The utility model provides a steel-aliasing closes external prestressing force of girder bridge and consolidates steering apparatus which characterized in that: including 2 airtight cavities that the group structure is the same, every airtight cavity of group includes steel pipe (7) and baffle (8), steel pipe (7) weld in one side of baffle (8), the other end of steel pipe (7) welds on bridge construction's cross slab (3), the circumference equipartition of baffle (8) and cross slab (3) be provided with round prestressing steel bundle clearing hole, relative epaxial prestressing steel bundle passes through downthehole prestressing steel strand wires (10) of wearing to be equipped with, cement base grout material (1) is poured into respectively in 2 steel pipe (7).
2. The external prestress reinforcement steering device for the steel-composite girder bridge according to claim 1, wherein: the cement-based grouting material (1) is poured through a feeding hole (6) formed in the steel pipe (7).
3. The external prestress reinforcement steering device for the steel-composite girder bridge according to claim 1 or 2, wherein: the steel pipe (7) is welded with reinforcing ribs (5).
4. The external prestress reinforcement steering device for the steel-composite girder bridge according to claim 3, wherein: the joint of the steel pipe (7) and the diaphragm plate (3) is sealed by waterproof sealant (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220063067.XU CN216892068U (en) | 2022-01-11 | 2022-01-11 | External prestress reinforcing and steering device for steel-mixed composite beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220063067.XU CN216892068U (en) | 2022-01-11 | 2022-01-11 | External prestress reinforcing and steering device for steel-mixed composite beam bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216892068U true CN216892068U (en) | 2022-07-05 |
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ID=82212612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220063067.XU Active CN216892068U (en) | 2022-01-11 | 2022-01-11 | External prestress reinforcing and steering device for steel-mixed composite beam bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216892068U (en) |
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2022
- 2022-01-11 CN CN202220063067.XU patent/CN216892068U/en active Active
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