CN216474531U - Water steel box girder lifting, sliding and installing system with existing bridge penetrating downwards - Google Patents
Water steel box girder lifting, sliding and installing system with existing bridge penetrating downwards Download PDFInfo
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- CN216474531U CN216474531U CN202122639312.5U CN202122639312U CN216474531U CN 216474531 U CN216474531 U CN 216474531U CN 202122639312 U CN202122639312 U CN 202122639312U CN 216474531 U CN216474531 U CN 216474531U
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- existing bridge
- box girder
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Abstract
The utility model relates to an overwater steel box girder lifting, sliding and installing system penetrating through an existing bridge, wherein two sliding rails are arranged on two sides of the top surface of the existing bridge along the bridge direction, a frame girder is erected on the two sliding rails in the transverse bridge direction, the bottom of the frame girder is supported on the two sliding rails, two winches are respectively arranged on the top surfaces of two ends of the frame girder, and traction ropes of the winches at two ends of the frame girder respectively overhang to the lower part of the existing bridge from two sides of the existing bridge and are connected with the steel box girder to be installed; and each sliding rail is provided with a rail clamping type jack, and the front end of the jack abuts against one side of the frame beam. The utility model is not limited by an upper bridge and a clearance below the bridge, and can solve the problem that the steel box girder below the existing bridge is difficult to install.
Description
Technical Field
The utility model belongs to the technical field of bridge construction, relates to steel structure bridge construction of an existing bridge passing through the water and the existing bridge, and particularly relates to a lifting, sliding and installing system of a water steel box girder passing through the existing bridge.
Background
The steel structure bridge construction, when the bridge is on water, the steel box girder can be usually installed by cable crane or bridge deck crane. And when the steel structure bridge is positioned on water and the existing bridge is worn downwards, the steel box girder positioned below the existing bridge cannot be hoisted by adopting a cable crane because the upper bridge blocks, and the clearance below the bridge is limited and cannot be installed by adopting a bridge deck crane. The existing other steel box girder installation methods, such as a support splicing method, a sliding jacking method and the like, are all suitable for land construction and cannot be implemented on water, so that the installation of the steel box girder below the existing bridge is difficult.
Disclosure of Invention
The utility model aims to provide a lifting and sliding installation system of an overwater steel box girder penetrating through an existing bridge, and solves the problem of installation of the steel box girder when the existing bridge is penetrated through the steel structure bridge.
The technical scheme of the utility model is as follows:
the utility model provides a wear steel box girder on water of existing bridge to promote installing the system that slides down which characterized in that: two sliding rails are arranged on two sides of the top surface of the existing bridge along the bridge direction, a frame beam is erected on the two sliding rails in the transverse bridge direction, the bottom of the frame beam is supported on the two sliding rails, two winches are respectively arranged on the top surfaces of two ends of the frame beam, and the traction ropes of the winches on the two ends of the frame beam respectively hang from two sides of the existing bridge to the lower side of the existing bridge and are connected with a steel box beam to be installed; and each sliding rail is provided with a rail clamping type jack, and the front end of the jack abuts against one side of the frame beam.
The utility model utilizes the existing bridge above to install and erect the steel box girder lifting and sliding system, is not limited by the bridge above and the clearance below the bridge, and can solve the problem that the steel box girder below the existing bridge is difficult to install. Under the condition that the upper bridge and the lower bridge are constructed simultaneously, the lower steel box girder can be installed after one-span construction of the upper bridge is completed, and the upper bridge and the lower bridge can be constructed synchronously, so that the engineering progress is accelerated.
Drawings
FIG. 1 is a schematic structural view along the direction of an existing bridge above the steel box girder, and shows the state of the steel box girder before being hoisted;
FIG. 2 is a schematic structural view of an existing bridge along the upper side of the utility model, showing the state of a steel box girder when being hoisted in place;
fig. 3 is a schematic structural view of the present invention in the existing bridge direction transversely above.
Detailed Description
As shown in fig. 1, 2 and 3, a constructed steel structure bridge passes through the lower part of an existing bridge 1, two sliding rails 2 are arranged on two sides of the top surface of the existing bridge along the bridge direction, a frame beam 3 is erected on the two sliding rails in the transverse bridge direction, the bottom of the frame beam is supported on the two sliding rails, two winches 4 are respectively arranged on the top surfaces of two ends of the frame beam, and traction ropes 5 of the winches at two ends of the frame beam respectively overhang to the lower part of the existing bridge from two sides of the existing bridge and are connected with a steel box beam 6 to be installed; each sliding rail is provided with a rail clamping type jack 7, and the front end of the jack 7 abuts against one side of the frame beam 3.
When the utility model is implemented specifically, the frame beam 3 can adopt two track beams 31 laid on the slide rails, two cross beams 32 are welded on a transverse existing bridge between the two track beams, two ends of each cross beam are respectively welded with 4 upright posts 33, a winch mounting platform 34 is erected on the 4 upright posts, and the winch 4 is fixed on the winch mounting platform; two tie beams 35 are welded between the two cross beams.
As shown in fig. 1 and 2, when the steel box girder hoisting construction is performed, after the steel box girder 6 is transported under the existing bridge 1 by a girder transporting ship, the winch traction ropes 5 at the two ends of the frame girder are respectively connected with the two ends of the steel box girder, the winch 4 lifts the steel box girder to a height higher than the installation height, then the jack 7 pushes the frame girder 3 to move along the slide rail, and when the steel box girder reaches above the bridge pier, the winch lowers the steel box girder onto the bridge pier 8, so that the steel box girder installation is completed.
Claims (2)
1. The utility model provides a wear steel box girder on water of existing bridge to promote installing the system that slides down which characterized in that: two sliding rails are arranged on two sides of the top surface of the existing bridge along the bridge direction, a frame beam is erected on the two sliding rails in the transverse bridge direction, the bottom of the frame beam is supported on the two sliding rails, two winches are respectively arranged on the top surfaces of two ends of the frame beam, and the traction ropes of the winches on the two ends of the frame beam respectively hang from two sides of the existing bridge to the lower side of the existing bridge and are connected with a steel box beam to be installed; and each sliding rail is provided with a rail clamping type jack, and the front end of the jack abuts against one side of the frame beam.
2. The overwater steel box girder lifting and sliding installation system for passing through an existing bridge downwards according to claim 1, is characterized in that: the frame beam comprises two track beams laid on the slide rails, two cross beams are welded between the two track beams in the transverse bridging direction, 4 upright posts are welded at two ends of each cross beam respectively, a winch mounting platform is erected on the 4 upright posts, and the winch is fixed on the winch mounting platform; two connecting beams are welded between the two cross beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639312.5U CN216474531U (en) | 2021-10-31 | 2021-10-31 | Water steel box girder lifting, sliding and installing system with existing bridge penetrating downwards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639312.5U CN216474531U (en) | 2021-10-31 | 2021-10-31 | Water steel box girder lifting, sliding and installing system with existing bridge penetrating downwards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216474531U true CN216474531U (en) | 2022-05-10 |
Family
ID=81444717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122639312.5U Active CN216474531U (en) | 2021-10-31 | 2021-10-31 | Water steel box girder lifting, sliding and installing system with existing bridge penetrating downwards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216474531U (en) |
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2021
- 2021-10-31 CN CN202122639312.5U patent/CN216474531U/en active Active
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