CN219010991U - Temporary construction platform for longitudinal joint of top plate of steel box girder - Google Patents
Temporary construction platform for longitudinal joint of top plate of steel box girder Download PDFInfo
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- CN219010991U CN219010991U CN202320201810.8U CN202320201810U CN219010991U CN 219010991 U CN219010991 U CN 219010991U CN 202320201810 U CN202320201810 U CN 202320201810U CN 219010991 U CN219010991 U CN 219010991U
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- steel box
- construction platform
- box girder
- longitudinal joint
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Abstract
The utility model discloses a temporary construction platform for a longitudinal joint of a top plate of a steel box girder, relates to the field of bridge construction, and solves the problems of long construction period and uneconomical construction of the existing construction platform. The technical scheme adopted by the utility model is as follows: the temporary construction platform for the longitudinal joint of the top plate of the steel box girder comprises two steel box girders which are horizontally arranged and parallel to each other, wherein a longitudinal joint is formed between the top plates of the two steel box girders, the web plates of the two steel box girders are provided with supporting parts protruding transversely to the steel box girders, and the construction platform is erected between the supporting parts of the two steel box girders. The construction platform takes the steel box girder as a stress point, the foundation is not required to be treated for erecting the construction platform, the construction platform is easy to erect and withdraw, and the construction period can be shortened; the construction platform is not influenced by the topography under the bridge or crossing the existing line, and the traffic under the bridge can be recovered as soon as possible when the existing line is crossed; the construction platform can be recycled after being dismantled, and the economical efficiency is good. The utility model is used for welding the longitudinal seam of the top plate of the steel box girder.
Description
Technical Field
The utility model relates to the field of bridge construction, in particular to a temporary construction platform for constructing a longitudinal welded joint between top plates of two steel box girders.
Background
With the rapid development of the construction of the infrastructure in China, the steel box girders are widely applied to bridges, the longitudinal gaps between the top plates of the steel box girders are required to be welded, and a construction platform is required to be erected for the convenience of construction. When the bridge adopting the steel box girder spans the existing line, expressway and the like, the construction platform is required to be erected or after the construction platform is erected, the traffic under the bridge is not influenced, and the safety of vehicles and pedestrians passing through the lower end of the bridge is effectively protected.
The traditional construction platform is erected, foundation treatment is needed, then the construction platform supported by the ground is erected from bottom to top, the construction platform is affected by site construction conditions, the erection difficulty is high, and the safety risk is high; in addition, because the construction platform is a temporary building, the construction platform needs to be dismantled in the later period, and the traditional construction platform erecting mode also has the problems of poor economic benefit and long construction period.
Disclosure of Invention
The utility model provides a temporary construction platform for a longitudinal joint of a top plate of a steel box girder, which solves the problems of long construction period and uneconomical construction of the existing construction platform.
The technical scheme adopted by the utility model is as follows: the temporary construction platform for the longitudinal joint of the top plate of the steel box girder comprises two steel box girders which are horizontally arranged and parallel to each other, wherein a longitudinal joint is formed between the top plates of the two steel box girders, the web plates of the two steel box girders are provided with supporting parts protruding transversely to the steel box girders, and the construction platform is erected between the supporting parts of the two steel box girders.
In order to increase the clear height of the construction platform, i.e. to increase the height difference of the construction platform from the longitudinal joint, it is preferred that: the supporting part is arranged at the joint of the web plate and the bottom plate, and is positioned on the plane of the bottom plate of the steel box girder.
In order to have a construction platform directly below the entire longitudinal seam, it is further: the length of the construction platform is consistent with that of the steel box girder.
In order to ensure the stability of the construction platform, the width of the supporting part is not less than 80mm. For example, the width of the support portion is 100mm.
In order to facilitate construction, specifically: the construction platform comprises cross beams which are directly arranged between the supporting parts and are arranged at intervals, and plates paved on the tops of the cross beams.
In order to avoid sideslip of the cross beam at the support, it is further: the top surface interval of supporting part sets up the draw-in groove, and the tip of crossbeam is located the draw-in groove. Or, at least one of the two ends of the cross beam is provided with an end plate, the end plate is provided with a screw hole, and a jacking bolt is arranged in the screw hole.
In order to avoid the damage of the steel box girder by the jacking bolts, further: the tight end of top of jack-up bolt still sets up rubber gasket.
In order to ensure the stability of the jack bolts, it is further: the jacking bolts are further provided with nuts, and the nuts and the rubber gaskets are located on two sides of the end plates.
Specific: the crossbeam is I-steel, and the panel is the plank, and the top of plank still lays the fire prevention cotton blanket.
The beneficial effects of the utility model are as follows: the steel box girders are provided with the supporting parts, the construction platforms are arranged between two adjacent steel box girders, the foundation is not required to be treated for erecting the construction platforms, the construction platforms are easy to be erected and removed, and the construction period can be shortened; the construction platform takes the steel box girder as a support, so that the construction platform is safe and stable; the construction platform can be recycled after being dismantled, so that the construction cost is saved, and the economical efficiency is good.
Drawings
Fig. 1 is a schematic structural view of a temporary construction platform for a longitudinal joint of a top plate of a steel box girder.
Fig. 2 is a schematic diagram of the end structure of a cross beam of the steel box girder top plate longitudinal joint temporary construction platform of the present utility model.
Reference numerals: steel box girder 1, top plate 11, web 12, support 13, bottom plate 14, longitudinal joint 2, cross beam 3, end plate 31, jack bolts 32, rubber gaskets 33, nuts 34, and plate 4.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the temporary construction platform for the longitudinal joint of the top plate of the steel box girder comprises two steel box girders 1 which are horizontally arranged and parallel to each other, wherein the steel box girders 1 are arranged between pier capping girders, the steel box girders 1 comprise a top plate 11, a bottom plate 14 and a web plate 12 between the top plate 11 and the bottom plate 14, and the top plate 11, the web plate 12 and the bottom plate 14 enclose a middle cavity of the steel box girders 1. A longitudinal joint 2 is formed between the top plates 11 of the two steel box girders 1, and a welding seam is formed after the longitudinal joint 2 is welded. The web 12 of the two steel box girders 1 is provided with supporting parts 13 protruding transversely to the steel box girders 1, and a construction platform is erected between the supporting parts 13 of the two steel box girders 1. The construction platform can be used for welding construction of the longitudinal joint 2. The supporting part 13 is fixed on the web 12 of the steel box girder 1, or the supporting part 13 and the web 12 of the steel box girder 1 are of an integrated structure, and play a role in supporting a construction platform. The heights of the two supporting parts 13 are preferably uniform so as to ensure that the construction platform is horizontal.
The supporting portion 13 may be located at any height of the web 12, so as to improve the clear height of the construction platform, that is, to improve the height difference between the construction platform and the longitudinal joint 2, the supporting portion 13 is disposed at the junction between the web 12 and the bottom plate 14, as shown in fig. 1, and at this time, the supporting portion 13 is located on the plane of the bottom plate 14 of the steel box girder 1. In order to have a construction platform directly below the entire longitudinal joint 2 for facilitating the construction of the longitudinal joint 2, the length of the construction platform corresponds to the length of the steel box girder 1. The supporting portions 13 may be arranged continuously or at intervals. The width of the supporting portion 13 is only required to be capable of stably supporting the construction platform, the width of the supporting portion 13 is in the transverse direction of the steel box girder 1, and in order to ensure the stability of the construction platform, the width of the supporting portion 13 is generally not less than 80mm, for example, the width of the supporting portion 13 is 100mm.
A specific embodiment relating to a construction platform is provided below. The construction platform comprises cross beams 3 which are directly arranged between the supporting parts 13 at intervals, and plates 4 paved on the tops of the cross beams 3. The cross beam 3 is typically a steel member, such as i-steel, and the sheet 4 may be a wood board. In order to avoid spark splashing caused by welding, the top of the construction platform is also paved with fireproof materials, such as fireproof cotton felt. In order to prevent the cross beam 3 from sideslip at the supporting part 13, clamping grooves are formed in the top surface of the supporting part 13 at intervals, and the end part of the cross beam 3 is positioned in the clamping grooves; alternatively, the cross member 3 is fixed to the support portion 13 by bolts or positioning pins; still alternatively, as shown in fig. 2, at least one of the two ends of the cross beam 3 has an end plate 31, the end plate 31 has a screw hole, and a jack bolt 32 is provided in the screw hole, and the jack bolt 32 is adjusted so that the jack bolt 32 contacts and clamps the steel box girder 1. In order to avoid the damage of the jacking bolts 32 to the steel box girder 1, rubber gaskets 33 are arranged at the jacking ends of the jacking bolts 32. In order to secure the stability of the jack bolt 32, the jack bolt 32 is further provided with nuts 34, and the nuts 34 and the rubber gaskets 33 are located on both sides of the end plate 31. The construction platform can be recycled after being dismantled.
The steel box girder 1 is used as a stress point for the temporary construction platform of the longitudinal joint of the top plate of the steel box girder, so that a stable, safe and economic suspended construction platform is obtained, the construction platform is not influenced by the topography under the bridge or the existing line crossing, particularly when the existing line crossing is carried out, the traffic under the bridge can be recovered as early as possible, and the safety of vehicles and pedestrians passing through the lower end of the bridge is effectively protected. The temporary construction platform for the longitudinal joints of the steel box girder top plate reduces the construction difficulty of workers, improves the safety of site construction, has high construction efficiency and strong operability, can effectively shorten the construction period, can realize recycling, saves the construction cost, and completely meets the actual construction requirement through site actual construction inspection.
Claims (10)
1. The temporary construction platform for the longitudinal joint of the top plate of the steel box girder comprises two steel box girders (1) which are horizontally arranged and mutually parallel, and a longitudinal joint (2) is formed between the top plates (11) of the two steel box girders (1), and is characterized in that: the web plates (12) of the two steel box girders (1) are provided with supporting parts (13) protruding transversely to the steel box girders (1), and a construction platform is erected between the supporting parts (13) of the two steel box girders (1).
2. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 1, wherein: the supporting part (13) is positioned at the joint of the web plate (12) and the bottom plate (14), and the supporting part (13) is positioned on the plane of the bottom plate (14) of the steel box girder (1).
3. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 1, wherein: the length of the construction platform is consistent with that of the steel box girder (1).
4. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 1, wherein: the width of the supporting part (13) is not less than 80mm.
5. The temporary construction platform for the longitudinal joint of the top plate of the steel box girder according to any one of claims 1 to 4, wherein: the construction platform comprises cross beams (3) which are directly arranged between the supporting parts (13) and are arranged at intervals, and plates (4) which are paved on the tops of the cross beams (3).
6. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 5, wherein: the top surface of the supporting part (13) is provided with clamping grooves at intervals, and the end part of the cross beam (3) is positioned in the clamping grooves.
7. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 5, wherein: at least one of the two ends of the cross beam (3) is provided with an end plate (31), the end plate (31) is provided with a screw hole, and a jacking bolt (32) is arranged in the screw hole.
8. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 7, wherein: the propping end of the propping bolt (32) is also provided with a rubber gasket (33).
9. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 8, wherein: the jacking bolt (32) is further provided with nuts (34), and the nuts (34) and the rubber gaskets (33) are located on two sides of the end plate (31).
10. The temporary construction platform for a longitudinal joint of a top plate of a steel box girder according to claim 5, wherein: the beam (3) is I-steel, the plate (4) is a wood plate, and a fireproof cotton felt is paved at the top of the wood plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320201810.8U CN219010991U (en) | 2023-02-08 | 2023-02-08 | Temporary construction platform for longitudinal joint of top plate of steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320201810.8U CN219010991U (en) | 2023-02-08 | 2023-02-08 | Temporary construction platform for longitudinal joint of top plate of steel box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219010991U true CN219010991U (en) | 2023-05-12 |
Family
ID=86232324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320201810.8U Active CN219010991U (en) | 2023-02-08 | 2023-02-08 | Temporary construction platform for longitudinal joint of top plate of steel box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219010991U (en) |
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2023
- 2023-02-08 CN CN202320201810.8U patent/CN219010991U/en active Active
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