CN220486224U - Cantilever steel structure suitable for bridge is widened - Google Patents
Cantilever steel structure suitable for bridge is widened Download PDFInfo
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- CN220486224U CN220486224U CN202322319371.3U CN202322319371U CN220486224U CN 220486224 U CN220486224 U CN 220486224U CN 202322319371 U CN202322319371 U CN 202322319371U CN 220486224 U CN220486224 U CN 220486224U
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- bridge
- steel structure
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- anchor bolts
- columns
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 72
- 239000010959 steel Substances 0.000 title claims abstract description 72
- 239000000126 substance Substances 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses an overhanging steel structure suitable for bridge widening, which comprises bridge columns arranged on the ground, wherein the upper ends of the bridge columns are provided with existing bridges and railings, each bridge column is provided with a connecting piece, a supporting bracket is fixedly connected with the bridge column through the connecting piece, a steel structure overhanging beam is arranged on the supporting bracket, two supporting steel structure upright posts are arranged at the end parts of the steel structure overhanging beam, a newly-added bridge is arranged at the upper ends of the supporting steel structure upright posts, and the newly-added bridge is hoisted to the elevation consistent with the elevation of the existing bridge to form a bridge deck whole.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a cantilever steel structure suitable for bridge widening.
Background
Urban overhead bridges play an important role in urban three-dimensional traffic, but with the development of economy, the range of cities is gradually expanded, and in recent years, with the appearance of large cities and extra-large cities, the increase of urban traffic flow also brings great test to traffic road networks. In particular, bridges built in the eighth and nineties of the last century have most bridge decks which cannot meet the traffic demand nowadays, and widening the bridge decks to meet the traffic demands becomes a new subject. In the prior art, the widening bridge deck adopts a new bridge to be built on the side surface of the existing bridge, but the technology has high manufacturing cost and long construction period.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, and provides an overhanging steel structure suitable for bridge widening, which comprises bridge columns arranged on the ground, wherein the upper ends of the bridge columns are provided with existing bridges and railings, each bridge column is provided with a connecting piece, a supporting bracket is fixedly connected with the bridge column through the connecting piece, a steel structure overhanging beam is arranged on the supporting bracket, two supporting steel structure upright posts are arranged at the end parts of the steel structure overhanging beam, a newly-added bridge is arranged at the upper ends of the supporting steel structure upright posts, and the elevation of the newly-added bridge is consistent with that of the existing bridge, so that a bridge deck is integrated.
Preferably, the connecting piece comprises a connecting steel plate and chemical anchor bolts, each bridge column is implanted with the chemical anchor bolts, the connecting steel plate is fixedly connected with the bridge column through the chemical anchor bolts, and the supporting bracket is arranged on the connecting steel plate.
Preferably, the number of the chemical anchors on each bridge column is eight, and the chemical anchors are distributed symmetrically about the bridge column, and the grade of the chemical anchors is not lower than M22.
Preferably, the connecting steel plates are Q345-grade, and are coated with anti-corrosion fireproof materials, and the thickness of the connecting steel plates is 10mm.
Preferably, double-sided full welding is adopted between the connecting steel plate and the supporting bracket, between the supporting bracket and the steel structure cantilever beam, between the steel structure cantilever beam and the supporting steel structure upright post, and between the supporting steel structure upright post and the newly-added bridge structure.
In summary, the utility model has the following beneficial effects: the utility model solves the problem of the deficiency of the traditional bridge widening technology, and has the advantages of no need of newly building the bridge, short construction period, lower manufacturing cost and cost saving.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. ground surface; 2. a bridge column; 3. existing bridges; 4. railing; 5. chemical anchor bolts; 6. connecting steel plates; 7. supporting brackets; 8. a steel structure cantilever beam; 10. supporting the steel structure upright post; 12. and newly adding a bridge.
Detailed Description
The technical scheme of the utility model is described in detail below through the drawings, but the protection scope of the utility model is not limited to the embodiments.
Referring to fig. 1, the cantilever steel structure suitable for bridge widening comprises bridge columns 2 arranged on the ground 1, wherein the upper ends of the bridge columns 2 are provided with existing bridges 3 and railings 4, and the bridge structure is a bridge structure in the prior art.
In the technical scheme, the number of the chemical anchors 5 on each bridge column 2 is eight, the bridge columns 2 are symmetrically distributed, the bridge columns 2 are uniformly stressed, the bridge columns 2 are not damaged, the grade of the chemical anchors 5 is not lower than M22, and the connection strength of the connecting steel plates 6 is ensured.
Preferably, the connecting steel plate 6 adopts Q345 grade, has the thickness of 10mm, has the advantage of high strength, and is coated with an anti-corrosion fireproof material to avoid the occurrence of the condition of excessively rapid corrosion and oxidation.
Preferably, the steel plate 6 and the supporting bracket 7, the supporting bracket 7 and the steel structure cantilever beam 8, the steel structure cantilever beam 8 and the supporting steel structure upright post 10, and the supporting steel structure upright post 10 and the newly added bridge 12 are welded in a full-face manner, so that the connection strength is ensured.
The construction method of the utility model comprises the following steps:
(1) Detecting and evaluating: the structural size and the stress performance of the existing bridge 3 are detected, and the use state of the bridge is estimated.
(2) And (5) construction of a chemical anchor bolt: eight chemical anchors 5 are symmetrically implanted at the left and right of the upper end of each bridge column 2 and are used for connecting steel plates 6. The chemical anchor 5 is not lower than the M22 grade.
(3) And (3) installing a connecting steel plate 6: a10 mm thick steel plate is installed through the chemical anchor bolts 5, the steel plate clings to the bridge column 2, and the connection and the fixation are firm. The connecting steel plate 6 adopts Q345 level and is coated with anti-corrosion fireproof materials.
(4) Welding support bracket 7: and 2 supporting brackets 7 are welded on each connecting steel plate 6 and are used for bearing the upper steel structure cantilever beams 8. The support bracket 7 is made of Q345 grade steel with the thickness of 10mm.
(5) Installing a steel structure cantilever beam 8: the steel structure cantilever beam 8 is placed on the supporting bracket 7, a double-sided full welding seam is adopted at the connecting position, and the grade of the welding seam is not lower than grade 2.
(7) Mounting and supporting the steel structure upright post 10: at the ends of the steel structure cantilever beams 8, two supporting steel structure upright posts 10 are installed for bearing the newly added bridge 12 at the upper part.
(8) Full-welded weld: and a double-sided full welding seam is adopted between the connecting steel plate 6 and the supporting bracket 7, between the supporting bracket 7 and the steel structure cantilever beam 8, between the steel structure cantilever beam 8 and the supporting steel structure upright post 10, and between the supporting steel structure upright post 10 and the newly added bridge 12, the welding seam grade is not lower than 2, and all welding seams adopt flaw detection.
(9) Hoisting a prefabricated steel structure bridge deck: and the newly added bridge 12 is installed by adopting hoisting equipment, the elevation is consistent with that of the existing bridge 3, the bridge deck is formed as a whole, and traffic is convenient to pass.
While the utility model has been shown and described with reference to certain preferred embodiments thereof, it is not to be construed as limited to the utility model itself, but various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. The utility model provides a steel construction encorbelments suitable for bridge widens, includes the bridge column of setting at subaerial, the upper end of bridge column is provided with existing bridge and railing, its characterized in that: the bridge comprises bridge columns, wherein each bridge column is provided with a connecting piece, support brackets and bridge columns are fixedly connected through the connecting pieces, steel structure cantilever beams are arranged on the support brackets, two support steel structure upright columns are arranged at the end parts of the steel structure cantilever beams, newly-added bridges are arranged at the upper ends of the support steel structure upright columns, and the newly-added bridges are hoisted to be identical in elevation with the existing bridges to form a bridge deck as a whole.
2. The overhanging steel structure suitable for bridge widening according to claim 1, characterized in that: the connecting piece comprises a connecting steel plate and chemical anchor bolts, each bridge column is implanted with the chemical anchor bolts, the connecting steel plate is fixedly connected with the bridge columns through the chemical anchor bolts, and the supporting bracket is arranged on the connecting steel plate.
3. The overhanging steel structure suitable for bridge widening according to claim 2, characterized in that: the number of the chemical anchor bolts on each bridge column is eight, the chemical anchor bolts are distributed symmetrically about the bridge column, and the grade of the chemical anchor bolts is not lower than M22.
4. A overhanging steel structure suitable for bridge widening according to claim 3, characterized in that: the connecting steel plate is Q345-level, and is coated with anti-corrosion fireproof materials, and the thickness of the connecting steel plate is 10mm.
5. The overhanging steel structure suitable for bridge widening according to claim 4, wherein: and double-sided full-welding is adopted between the connecting steel plate and the supporting bracket, between the supporting bracket and the steel structure cantilever beam, between the steel structure cantilever beam and the supporting steel structure upright post, and between the supporting steel structure upright post and the newly-added bridge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319371.3U CN220486224U (en) | 2023-08-29 | 2023-08-29 | Cantilever steel structure suitable for bridge is widened |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319371.3U CN220486224U (en) | 2023-08-29 | 2023-08-29 | Cantilever steel structure suitable for bridge is widened |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220486224U true CN220486224U (en) | 2024-02-13 |
Family
ID=89830971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322319371.3U Active CN220486224U (en) | 2023-08-29 | 2023-08-29 | Cantilever steel structure suitable for bridge is widened |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220486224U (en) |
-
2023
- 2023-08-29 CN CN202322319371.3U patent/CN220486224U/en active Active
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