CN220746559U - Diagonal bracing steel structure suitable for bridge is widened - Google Patents
Diagonal bracing steel structure suitable for bridge is widened Download PDFInfo
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- CN220746559U CN220746559U CN202322319385.5U CN202322319385U CN220746559U CN 220746559 U CN220746559 U CN 220746559U CN 202322319385 U CN202322319385 U CN 202322319385U CN 220746559 U CN220746559 U CN 220746559U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 120
- 239000010959 steel Substances 0.000 title claims abstract description 120
- 239000000126 substance Substances 0.000 claims abstract description 50
- 238000010276 construction Methods 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 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
- 230000002787 reinforcement Effects 0.000 description 1
Abstract
The utility model discloses an inclined strut steel structure suitable for bridge widening, which comprises bridge posts arranged on the ground, wherein the upper ends of the bridge posts are provided with existing bridges and railings, each bridge post is provided with a vertical connecting piece, each vertical connecting piece comprises a vertical connecting steel plate and a vertical chemical anchor bolt, each bridge post is implanted with a vertical chemical anchor bolt, the vertical connecting steel plate is fixedly connected with the bridge post through the vertical chemical anchor bolts, a supporting bracket is arranged on the vertical connecting steel plate, the supporting bracket is fixedly connected with the bridge post through the vertical connecting steel plate, the supporting bracket is provided with a steel structure cantilever beam, the end parts of the steel structure cantilever beams are provided with two supporting steel structure upright posts, the upper ends of the supporting steel structure upright posts are provided with newly-added bridges, and an inclined supporting piece for reinforcing is arranged between the bridge posts and the steel structure cantilever beam.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a diagonal bracing 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 to overcome the defects of the prior art, and provides an inclined strut 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 vertical connecting piece, each vertical connecting piece comprises a vertical connecting steel plate and a vertical chemical anchor bolt, each bridge column is implanted with a vertical chemical anchor bolt, the vertical connecting steel plates are fixedly connected with the bridge column through the vertical chemical anchor bolts, the supporting bracket is arranged on the vertical connecting steel plates, the supporting bracket is fixedly connected with the bridge column through the vertical connecting steel plates, the supporting bracket is provided with a steel structure cantilever beam, the ends of the steel structure cantilever beam are provided with two supporting steel structure upright columns, the upper ends of the supporting steel structure upright columns are provided with newly-added bridges, the newly-added bridges are lifted to be consistent with the elevation of the existing bridge to form a whole, and the inclined supporting pieces for reinforcement are arranged between the bridge columns and the steel structure cantilever beam.
Preferably, the oblique support piece comprises an oblique chemical anchor bolt, an oblique connecting steel plate and an oblique support, wherein the oblique chemical anchor bolt is arranged below the vertical chemical anchor bolt, the oblique connecting steel plate is installed on the bridge column through the oblique chemical anchor bolt, one end of the oblique support is welded with the oblique connecting steel plate, and the other end of the oblique support is welded with the steel structure cantilever beam.
Preferably, the number of the inclined chemical anchors on each bridge column is four, and the inclined chemical anchors are arranged on one side of the bridge column, and the grade of the inclined chemical anchors is not lower than M22
Preferably, the oblique connecting steel plate adopts Q345 grade, is coated with anti-corrosion fireproof materials, and has the thickness of 20mm.
Preferably, the number of the vertical chemical anchors on each bridge column is eight, and the vertical chemical anchors are distributed symmetrically about the bridge column, and the grade of the vertical chemical anchors is not lower than M22.
Preferably, the vertical connection steel plates are Q345-level, and are coated with anti-corrosion fireproof materials, and the thickness of the vertical connection steel plates is 10mm.
Preferably, the vertical connection steel plate and the support bracket, the support bracket and the steel structure cantilever beam, the steel structure cantilever beam and the support steel structure upright post, and the support steel structure upright post and the newly-added bridge structure are fully welded by double sides.
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, has the advantages of no need of newly building the bridge, short construction period, lower manufacturing cost and cost saving, and simultaneously has the advantages of high strength and high stability.
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. a vertical chemical anchor bolt; 6. a steel plate is vertically connected; 7. supporting brackets; 8. oblique chemical anchor bolts; 9. obliquely connecting the steel plates; 10. a diagonal support; 11. a steel structure cantilever beam; 13. supporting the steel structure upright post; 15. 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 diagonal bracing 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, the bridge structures are the bridge structures in the prior art, in order to solve the problems in the prior art, the vertical connecting pieces are arranged on each bridge column 2 and comprise vertical connecting steel plates 6 and vertical chemical anchor bolts 5, each bridge column 2 is implanted with the vertical chemical anchor bolts 5, the vertical connecting steel plates 6 are fixedly connected with the bridge columns 2 through the vertical chemical anchor bolts 5, the supporting brackets 7 are arranged on the vertical connecting steel plates 6, in the technical scheme, the number of the vertical chemical anchor bolts 5 on each bridge column 2 is eight, the bridge columns 2 are distributed symmetrically left and right, the bridge columns 2 are ensured to be stressed uniformly, and the bridge columns 2 are not damaged, meanwhile, the grade of the vertical chemical anchor bolts 5 is not lower than M22, the connection strength of the vertical connection steel plates 6 is ensured, the support bracket 7 is fixedly connected with the bridge column 2 through the vertical connection steel plates 6, the steel structure cantilever beam 11 is arranged on the support bracket 7, two support steel structure upright posts 13 are arranged at the end parts of the steel structure cantilever beam 11, a newly-added bridge 15 is arranged at the upper end of the support steel structure upright post 13, the newly-added bridge 15 is hoisted to the elevation consistent with the elevation of the existing bridge 3 to form a bridge deck whole, therefore, in the utility model, the steel structure cantilever beam 11 is arranged through the connection between the support bracket 7 and the bridge column 2, then a newly-added steel beam is arranged above the steel structure cantilever beam 11 through the support steel structure upright post 13, and the combination of the newly-added steel beam and the existing steel beam can realize the purpose of widening the bridge, the bridge does not need to be newly built, and the method has the advantages of short construction period, lower manufacturing cost and cost saving.
In addition, in order to prevent the problem of low strength of a newly-added bridge in the technical scheme, the utility model also increases the diagonal support, and specifically comprises a diagonal chemical anchor bolt 8, a diagonal connecting steel plate 9 and a diagonal support 1-, wherein the diagonal chemical anchor bolt 8 is arranged below a vertical chemical anchor bolt, the diagonal connecting steel plate 9 is arranged on a bridge column through the diagonal chemical anchor bolt 8, one end of the diagonal support 10 is welded with the diagonal connecting steel plate 9, and the other end is welded with a steel structure cantilever beam, so the diagonal support 10 is additionally added between the steel structure cantilever beam and the bridge column, the diagonal support of a triangular structure can effectively improve the strength of the steel structure cantilever beam, and the stability and the service life of the newly-added bridge are improved
In the utility model, the number of the inclined chemical anchor bolts 8 on each bridge column is four, and the inclined chemical anchor bolts 8 are arranged on one side of the bridge column and are used for installing the inclined connecting steel plate 9, the grade of the inclined chemical anchor bolts 8 is not lower than M22, the connecting strength of the inclined chemical anchor bolts 8 is ensured, the inclined connecting steel plate 9 adopts Q345 grade, the thickness is 20mm, and the outer coating of the anti-corrosion fireproof material is adopted, so that the condition of over-fast corrosion and oxidation is avoided
In addition, the vertical connecting steel plate 6 adopts Q345 level, has the thickness of 10mm, has the advantage of high strength, and simultaneously is coated with anti-corrosion fireproof materials, so that the condition of too fast corrosion and oxidation is avoided.
Finally, the vertical connecting steel plate 6 and the supporting bracket 7, the supporting bracket 7 and the steel structure cantilever beam 11, the steel structure cantilever beam 11 and the supporting steel structure upright post 13, and the supporting steel structure upright post 13 and the newly-added bridge 15 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 are detected, and the use state of the bridge is estimated.
(2) And (5) construction of a vertical chemical anchor bolt: 8 vertical chemical anchor bolts are symmetrically implanted at the left and right of the upper end of each bridge column and are used for vertically connecting steel plates.
(3) And (3) installing a vertical connecting steel plate 6: a vertical connecting steel plate with the thickness of 10mm is installed through a vertical chemical anchor bolt, the vertical connecting steel plate clings to the bridge column, and the connection is firm.
(4) Welding support bracket 7: and 2 supporting brackets are welded on each vertical connecting steel plate and used for bearing the cantilever beam of the upper steel structure.
(5) Installing a steel structure cantilever beam 11: the steel structure cantilever beam is placed on the supporting bracket, the connecting position adopts double-sided full welding seams, and the grade of the welding seams is not lower than grade 2.
(6) Construction of an oblique chemical anchor bolt 8: 4 oblique chemical anchor bolts are implanted at the bottom of the existing bridge column and are used for connecting and fixing an oblique connecting steel plate for the oblique support.
(7) Mounting oblique connecting steel plates 9: and a 20mm thick oblique connecting steel plate is arranged by changing an oblique chemical anchor bolt, the oblique connecting steel plate clings to the bridge column, and the connection and fixation are firm.
(8) The diagonal support 10 is installed: and installing an inclined support (steel structure), wherein one end of the support is welded with the inclined connecting steel plate, and the other end of the support is welded with the cantilever beam of the steel structure.
(9) Mounting and supporting the steel structure upright post 13: and two upright posts for supporting the steel structure are arranged at the end parts of the cantilever beams of the steel structure and are used for bearing the bridge structure at the upper part.
(10) Full-welded weld: the steel plate and the support bracket, the support bracket and the steel structure cantilever beam, the steel structure cantilever beam and the support steel structure upright post, and the support steel structure upright post and the newly-added bridge structure are vertically connected by double-sided full welding, the welding seam grade is not lower than 2, and all welding seams adopt flaw detection.
(11) Hoisting a prefabricated steel structure bridge deck: and the bridge structure is installed by adopting hoisting equipment, the elevation is consistent with that of the existing bridge, the bridge deck is formed as a whole, and traffic is convenient to pass.
Compared with the prior art, the method has the advantages that a bridge does not need to be newly built, the construction period is short, meanwhile, the manufacturing cost is lower, and the method saves the cost by 38 percent.
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 (7)
1. The utility model provides a bracing steel construction 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 vertical connecting piece, each vertical connecting piece comprises a vertical connecting steel plate and a vertical chemical anchor bolt, each bridge column is implanted with a vertical chemical anchor bolt, each vertical connecting steel plate is fixedly connected with the corresponding bridge column through the corresponding vertical chemical anchor bolt, each vertical connecting steel plate is provided with a supporting bracket, each vertical connecting steel plate is fixedly connected with the corresponding supporting bracket and the corresponding bridge column through the corresponding vertical connecting steel plate, each supporting bracket is provided with a steel structure cantilever beam, the end part of each steel structure cantilever beam is provided with two supporting steel structure upright columns, each supporting steel structure upright column is provided with a newly-added bridge, lifting elevations of the newly-added bridge are consistent with elevations of the corresponding bridge columns, and a bridge deck is integrally formed.
2. A diagonal bracing steel structure suitable for bridge widening according to claim 1, wherein: the inclined support piece comprises an inclined chemical anchor bolt, an inclined connecting steel plate and an inclined support, wherein the inclined chemical anchor bolt is arranged below the vertical chemical anchor bolt, the inclined connecting steel plate is installed on the bridge column through the inclined chemical anchor bolt, one end of the inclined support is welded with the inclined connecting steel plate, and the other end of the inclined support is welded with the steel structure cantilever beam.
3. A diagonal bracing steel structure suitable for bridge widening according to claim 2, wherein: the number of the inclined chemical anchor bolts on each bridge column is four, the inclined chemical anchor bolts are arranged on one side of the bridge column, and the grade of the inclined chemical anchor bolts is not lower than M22.
4. A diagonal bracing steel structure suitable for bridge widening according to claim 3, wherein: the oblique connecting steel plate is Q345-level, is coated with an anti-corrosion fireproof material, and has a thickness of 20mm.
5. A diagonal bracing steel structure suitable for bridge widening according to claim 4, wherein: the number of the vertical chemical anchor bolts on each bridge column is eight, the vertical chemical anchor bolts are distributed symmetrically about the bridge column, and the grade of the vertical chemical anchor bolts is not lower than M22.
6. The diagonal bracing steel structure suitable for bridge widening according to claim 5, wherein: the vertical connecting steel plate is Q345-level, is coated with anti-corrosion fireproof materials, and has the thickness of 10mm.
7. The diagonal bracing steel structure suitable for bridge widening according to claim 6, wherein: the vertical connecting steel plate is welded with the supporting bracket, the supporting bracket is welded with the steel structure cantilever beam, the steel structure cantilever beam is welded with the supporting steel structure upright post, and the supporting steel structure upright post is welded with the newly-added bridge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319385.5U CN220746559U (en) | 2023-08-29 | 2023-08-29 | Diagonal bracing steel structure suitable for bridge is widened |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319385.5U CN220746559U (en) | 2023-08-29 | 2023-08-29 | Diagonal bracing steel structure suitable for bridge is widened |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220746559U true CN220746559U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322319385.5U Active CN220746559U (en) | 2023-08-29 | 2023-08-29 | Diagonal bracing steel structure suitable for bridge is widened |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220746559U (en) |
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2023
- 2023-08-29 CN CN202322319385.5U patent/CN220746559U/en active Active
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