CN218911137U - Correcting device for installation of bridge steel box girder - Google Patents
Correcting device for installation of bridge steel box girder Download PDFInfo
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- CN218911137U CN218911137U CN202222918794.2U CN202222918794U CN218911137U CN 218911137 U CN218911137 U CN 218911137U CN 202222918794 U CN202222918794 U CN 202222918794U CN 218911137 U CN218911137 U CN 218911137U
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- box girder
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 95
- 239000010959 steel Substances 0.000 title claims abstract description 95
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 241001669679 Eleotris Species 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 238000011900 installation process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a correction device for installing a bridge steel box girder, which belongs to the technical field of highway traffic engineering and comprises a temporary support, a sliding plate arranged at the top of the temporary support, and a supporting frame capable of moving on the sliding plate, wherein at least two hydraulic jacks are arranged at the top of the supporting frame; the hydraulic jack is used for lifting the steel box girder to the designed elevation, and then the steel box girder is supported between the slide plate and the bottom of the steel box girder. The correction device provided by the utility model has the advantages that the problems that a temporary bracket is required to be cut or a cushioning steel plate is required to be lifted again in the conventional steel box girder installation process are solved, the steel box girder can be quickly corrected and fixed, the installation and the disassembly are relatively convenient, the manpower and material resources and the construction cost are saved, and the construction quality is relatively high.
Description
Technical Field
The utility model relates to the technical field of highway traffic engineering, in particular to a correction device for installing a bridge steel box girder.
Background
In the hoisting construction process of the steel box girder, a temporary support is usually required to be erected firstly, then the steel box girder is hoisted to a pier and supported in an auxiliary mode through the temporary support, the position of the steel box girder is required to be corrected in the process, and finally the temporary support is removed after the two ends of the steel box girder are fixed with the pier. At present, when the steel box girder is corrected, the temporary support is usually directly adjusted, if the temporary support is high, the temporary support is cut, and if the temporary support is short, the steel plate is padded. This approach is laborious and costly and the quality of the installation is difficult to guarantee. As in patent literature (CN 113652977 a), a method for installing a girder of a river-crossing steel box girder bridge is disclosed, in paragraphs 24 to 25 of the specification, temporary supports are required to be erected before the box girder segment is hoisted and constructed, so that the box girder segment is temporarily supported, meanwhile, in order to control the elevation of the box girder segment, the elevation of each pivot of each temporary support needs to be accurately calculated, then, an adjusting channel steel is installed, and the elevation is re-checked by a level gauge after the installation of each pivot is completed, so that the whole process is more troublesome, the installation requirement on the temporary supports is higher, and the manpower, material resources and construction cost are increased.
Disclosure of Invention
In order to overcome the defects of the existing bridge steel box girder installation and correction mode, the utility model aims to solve the technical problems that: the correction device for the installation of the bridge steel box girder is simple in structure and convenient to construct.
The technical scheme adopted for solving the technical problems is as follows:
the correcting device for installing the bridge steel box girder comprises a temporary support, a sliding plate arranged at the top of the temporary support, and a supporting frame capable of moving on the sliding plate, wherein at least two hydraulic jacks are arranged at the top of the supporting frame; the hydraulic jack is used for lifting the steel box girder to the designed elevation, and then the steel box girder is supported between the slide plate and the bottom of the steel box girder. The correction process of the utility model is as follows: firstly, constructing a temporary support, placing a support frame on a sliding plate at the top of the temporary support, then hanging a steel box girder above the temporary support by using a crane, placing the steel box girder on a pier and a hydraulic jack, then measuring the elevation of the bottom of the steel box girder by using an instrument, adjusting the hydraulic jack according to the elevation to enable the elevation to reach the design requirement, during the process, adjusting the position of the steel box girder by moving the support frame, finally manufacturing a fixed joint according to the distance between the bottom of the steel box girder and the top of the sliding plate, and supporting the fixed joint between the bottom of the steel box girder and the top of the sliding plate. The adoption slidable support frame is in order to conveniently remove its position on temporary support, makes the hydraulic jack can support in the specific position of steel case roof beam, also can conveniently take out the support frame after the correction is accomplished.
In order to ensure the structural strength of the temporary support, the temporary support is preferably formed by constructing Bei Leizhu and a Bailey beam, the Bailey beam is positioned right below the steel box beam, the length direction of the Bailey beam is perpendicular to the length direction of the steel box beam, namely, a plurality of hydraulic foreground tops are arranged along the width direction of the steel box beam, and the position of the steel box beam is convenient to accurately adjust.
The sliding connection of the support frame and the sliding plate can have various structural forms, and the preferable scheme adopted by the utility model is that a plane steel plate is directly adopted as the sliding plate and is paved along the length direction of the Bailey beam. Compared with sliding rails or sliding grooves and the like, the sliding plate has the advantages of relatively simple structure, convenience in laying, large bearing area and contribution to improving the stability of support.
For the support frame, for the convenient on-the-spot preparation, the support frame is including the backup pad that adopts the preparation of H shaped steel to and rotatable a plurality of backing rolls of setting in the backup pad bottom, the axis direction of backing roll is perpendicular with the length direction of backup pad. The H-shaped steel is adopted as the supporting plate, the structural strength is high, the supporting roller is not easy to deform, the contact area of the supporting roller and the sliding plate is larger than that of an ordinary roller, the supporting plate and the sliding plate can be uniformly dispersed in stress, and the supporting stability is ensured.
Further, a sleeper is arranged at a position corresponding to the hydraulic jack on the supporting plate. The sleeper can play a certain role in buffering, and the hydraulic jack or the supporting frame is prevented from being damaged due to rigid impact.
In order to meet the requirement of supporting strength, the fixed joint can adopt a steel cylinder section or an H-shaped steel section.
The beneficial effects of the utility model are as follows: through setting up slide and support frame at temporary support top to utilize the hydraulic jack on the support frame to bear the steel case roof beam, can realize the adjustment of the position and the elevation of steel case roof beam, later reuse the fixed knot to support the steel case roof beam, can realize the quick correction and the fixed of steel case roof beam, saved manpower and materials and construction cost, and construction quality is higher.
Drawings
FIG. 1 is a schematic view of the structure of a support frame support of the present utility model;
FIG. 2 is a schematic view of the structure of the fixed joint support of the present utility model;
the drawing is marked as 1-temporary bracket, 2-supporting frame, 3-fixed joint, 4-steel box girder, 11-slide, 12-Bei Leizhu, 13-Bei Leiliang, 21-hydraulic jack, 22-supporting plate, 23-supporting roller and 24-sleeper.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the correction device for bridge steel box girder installation of the utility model comprises a temporary support 1, a sliding plate 11 arranged on the top of the temporary support 1, and a supporting frame 2 capable of moving on the sliding plate 11, wherein at least two hydraulic jacks 21 are arranged on the top of the supporting frame 2; the steel box girder 4 is lifted to the designed elevation by the hydraulic jack 21 through the fixing joint 3, and then is supported between the slide plate 11 and the bottom of the steel box girder 4. The temporary support 1 should be lower than the design elevation of the steel box girder 4 when being built, so that the support frame 2 and the hydraulic jack 21 can be placed between the temporary support 1 and the steel box girder 4. The slidable support frame 2 is adopted to facilitate the movement of the position thereof on the temporary support 1 so that the hydraulic jack 21 can be supported at a specific position of the steel box girder 4, and the installation position of the steel box girder 4 can be adjusted by moving the support frame 2, so that the support frame 2 can be conveniently taken out after correction is completed. The number of hydraulic jacks 21 is selected according to the length of the support frame 2 and the width of the steel box girder 4, and if the bearing capacity is sufficiently large, two hydraulic jacks 21 can support the ends of the steel box girder 4.
The correction process of the utility model is as follows: firstly, constructing a temporary support 1, placing a support frame 2 on a sliding plate 11 at the top of the temporary support 1, then hanging a steel box girder 4 above the temporary support 1 by using a crane, placing the steel box girder on a pier and a hydraulic jack 21, then measuring the elevation of the bottom of the steel box girder 4 by using an instrument, adjusting the hydraulic jack 21 according to the elevation, lifting the steel box girder 4 until the elevation reaches the design requirement, adjusting the position of the steel box girder 4 by moving the support frame 2, finally manufacturing a fixed joint 3 according to the distance between the bottom of the steel box girder 4 and the top of the sliding plate 11, and supporting the fixed joint between the bottom of the steel box girder 4 and the top of the sliding plate 11, thus finishing the correction and the fixation of the steel box girder 4. And then welding the splicing part of the steel box girder 4, and fixing the two ends of the splicing part on the support of the bridge pier to finish the installation of the bridge pier and the steel box girder 4.
In order to ensure the structural strength of the temporary support 1, the temporary support 1 is preferably constructed by adopting Bei Leizhu and the bailey beams 13, the bailey beams 13 are positioned right below the steel box beams 4, and the length direction of the bailey beams is perpendicular to the length direction of the steel box beams 4, namely, the length direction of the bailey beams is parallel to the width direction of the steel box beams, so that the plurality of hydraulic jacks 21 can be ensured to be arranged along the width direction of the end parts of the steel box beams 4, and the positions of the steel box beams 4 can be accurately adjusted in the correcting process.
The sliding connection between the support frame 2 and the sliding plate 11 can have various structural forms, and the preferred scheme adopted by the utility model is that a plane steel plate is directly adopted as the sliding plate 11 and is paved along the length direction of the bailey beam 13. Compared with sliding rails or sliding grooves and the like, the sliding plate 11 has the advantages of relatively simple structure, convenient laying and low requirement on sliding of the support frame 2.
For the support frame 2, for convenience of field production, the support frame 2 comprises a support plate 22 made of H-shaped steel and a plurality of support rollers 23 rotatably arranged at the bottom of the support plate 22, wherein the axial direction of the support rollers 23 is perpendicular to the length direction of the support plate 22. The H-shaped steel is adopted as the supporting plate 22, the structural strength is high, the deformation is not easy, the contact area between the supporting roller 23 and the sliding plate 11 is larger than that of a common roller, the stress of the supporting plate 22 and the sliding plate 11 can be evenly dispersed, the supporting stability is ensured,
in the process of hoisting the steel box girder 4, a certain impact is generated when the steel box girder 4 is just placed on the temporary support 1, so that a sleeper 24 is further provided on the support plate 22 at a position corresponding to the hydraulic jack 21. The sleeper 24 can play a certain role in buffering, and the hydraulic jack 21 or the supporting frame 2 is prevented from being damaged due to rigid impact.
For the fixed joint 3, in order to meet the requirement of supporting strength, the fixed joint 3 can adopt a steel cylinder section or an H-shaped steel section.
According to the utility model, the sliding plate 11 and the supporting frame 2 are arranged at the top of the temporary support 1, the hydraulic jack 21 on the supporting frame 2 is utilized to bear the steel box girder 4, the position and elevation of the steel box girder 4 can be adjusted, then the fixing joint 3 is used for supporting the steel box girder 4, the steel box girder 4 can be rapidly corrected and fixed, the manpower and material resources and the construction cost are saved, the construction quality is higher, and the practicability and the application prospect are good.
Claims (6)
1. A correcting unit for installation of bridge steel case roof beam, characterized by: the hydraulic lifting device comprises a temporary support (1), a sliding plate (11) arranged at the top of the temporary support (1) and a supporting frame (2) capable of moving on the sliding plate (11), wherein at least two hydraulic jacks (21) are arranged at the top of the supporting frame (2); the hydraulic jack is characterized by further comprising a fixed joint (3), the height of the fixed joint (3) is equal to the height of the designed elevation of the bottom of the steel box girder (4) from the top of the sliding plate (11), and the fixed joint (3) supports between the sliding plate (11) and the bottom of the steel box girder (4) after the steel box girder (4) is lifted to the designed elevation by the hydraulic jack (21).
2. The correction device for bridge steel box girder installation according to claim 1, wherein: the temporary support (1) is formed by constructing Bei Leizhu (12) and a bailey beam (13), the bailey beam (13) is positioned right below the steel box beam (4), and the length direction of the bailey beam is perpendicular to the length direction of the steel box beam (4).
3. The correction device for bridge steel box girder installation according to claim 2, wherein: the sliding plate (11) is a planar steel plate and is paved along the length direction of the Bailey beam (13).
4. The correction device for bridge steel box girder installation according to claim 1, wherein: the support frame (2) comprises a support plate (22) made of H-shaped steel and a plurality of support rollers (23) rotatably arranged at the bottom of the support plate (22), and the axial direction of the support rollers (23) is perpendicular to the length direction of the support plate (22).
5. The correction device for bridge steel box girder installation of claim 4, wherein: and a sleeper (24) is arranged on the supporting plate (22) at a position corresponding to the hydraulic jack (21).
6. The correction device for bridge steel box girder installation according to claim 1, wherein: the fixed joint (3) is a steel cylinder section or an H-shaped steel section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918794.2U CN218911137U (en) | 2022-11-01 | 2022-11-01 | Correcting device for installation of bridge steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918794.2U CN218911137U (en) | 2022-11-01 | 2022-11-01 | Correcting device for installation of bridge steel box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218911137U true CN218911137U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222918794.2U Active CN218911137U (en) | 2022-11-01 | 2022-11-01 | Correcting device for installation of bridge steel box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218911137U (en) |
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2022
- 2022-11-01 CN CN202222918794.2U patent/CN218911137U/en active Active
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