CN215164797U - A direction limit structure for steel case roof beam pushes away installation - Google Patents
A direction limit structure for steel case roof beam pushes away installation Download PDFInfo
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- CN215164797U CN215164797U CN202120706901.8U CN202120706901U CN215164797U CN 215164797 U CN215164797 U CN 215164797U CN 202120706901 U CN202120706901 U CN 202120706901U CN 215164797 U CN215164797 U CN 215164797U
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- box girder
- steel box
- pier
- limiting rod
- steel
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Abstract
The utility model relates to a guiding and limiting structure for pushing installation of a steel box girder, wherein the steel box girder is supported above a pier through a walking jack, two rows of brackets are fixedly arranged on the bottom surface of the steel box girder by taking the longitudinal central line of the steel box girder as symmetry, and a through I-shaped steel is welded towards the outer side of the steel box girder by each row of brackets to be used as a guide rail; the outer sides of the two guide rails at the top of each pier are respectively and vertically provided with a limiting rod, the lower end of each limiting rod is embedded in pier top concrete, a roller is vertically arranged on each limiting rod, and the rollers are abutted to the outer sides of the guide rails at the bottom of the steel box girder. The utility model discloses can solve the horizontal off normal problem that the steel case roof beam top pushed away the in-process for the construction progress.
Description
Technical Field
The utility model belongs to steel construction bridge construction field relates to the construction and installation of steel case roof beam, and concretely relates to when adopting top pushing method installation steel case roof beam, carry out the spacing structure that leads to the steel case roof beam.
Background
When the walking jack is used for pushing and installing the steel box girder, deviation control of the steel box girder is a difficult point in construction, generally, whether the steel box girder has transverse deviation needs to be detected every time the walking jack pushes a stroke, if the deviation occurs, the steel box girder needs to be adjusted by adopting the transverse jack, the construction process is slow, and the efficiency is low.
Disclosure of Invention
The utility model aims at the above-mentioned problem, a direction limit structure that is used for the top to push away the installation of steel case roof beam is provided, pushes away the horizontal off normal of in-process ability control steel case roof beam, improves the efficiency of construction.
The technical scheme of the utility model as follows:
the utility model provides a direction limit structure for steel box girder top pushes away installation, steel box girder supports in the pier top through walking jack, its characterized in that: two rows of brackets are symmetrically and fixedly arranged on the bottom surface of the steel box girder by taking the longitudinal center line of the steel box girder as a center line, and a through long I-shaped steel is welded on each row of brackets towards the outer side of the steel box girder to be used as a guide rail; the outer sides of the two guide rails at the top of each pier are respectively and vertically provided with a limiting rod, the lower ends of the limiting rods are embedded in pier top concrete, a roller is vertically arranged on each limiting rod, and the rollers are abutted to the outer sides of the guide rails.
The utility model can solve the problem that the horizontal deviation needs to be adjusted continuously in the pushing process of the steel box girder, and accelerate the construction progress; the limiting rod adopts a lifting structure and can adapt to the longitudinal slope of the bridge; the bracket is connected with the steel box girder through the bolt without welding, so that the steel box girder cannot be damaged.
Drawings
Fig. 1 is a schematic view of a vertical structure of a transverse bridge of the present invention;
fig. 2 is a partially enlarged view of fig. 1.
Detailed Description
As shown in fig. 1 and 2, a steel box girder 1 is supported above a pier 3 through a walking jack 2, two rows of brackets 4 are fixedly arranged on the bottom surface of the steel box girder symmetrically by taking the longitudinal center line of the steel box girder as the center line, and a through long I-shaped steel is welded on each row of brackets towards the outer side of the steel box girder to be used as a guide rail 5; the outer sides of the two guide rails at the top of each pier 3 are respectively and vertically provided with a limiting rod 6, the lower end of each limiting rod is embedded in pier top concrete, a roller 7 is vertically arranged on each limiting rod 6, and the rollers 7 are abutted to the outer sides of the guide rails 5.
By adopting the structure, when the walking jack 2 pushes the steel box girder 1 to slide along the bridge direction, the two limiting rods 6 can limit the steel box girder to generate the displacement along the bridge direction.
The utility model discloses during the concrete implementation, for avoiding the welding to cause the damage to steel box girder structure, pass through bolt 8 with every bracket 4 and be connected with 1 bottom plate of steel box girder.
Last backup pad 9 and the bottom suspension fagging 10 that the level set up are welded on the gag lever post 6, cylinder 7 is located between the upper and bottom suspension fagging, and backup pad 9 and bottom suspension fagging 10 are run through respectively at the roller bearing 11 both ends of cylinder.
In order to adapt to a possible longitudinal slope of a bridge, the limiting rod 6 can adopt a lifting structure and comprises an upper section 61 and a lower section 62, the lower end of the lower section is embedded in pier body concrete, a plurality of pin holes 63 are respectively formed in the upper section and the lower section along the longitudinal direction, the lower end of the upper section is superposed with the upper end of the lower section, positioning pins are inserted into the pin holes through which the upper section and the lower section penetrate, and the roller 7 is installed on the upper section. The height of the limiting rod is adjusted by adjusting the length of the overlapped part of the upper section and the lower section. When a longitudinal slope exists in the bridge design, the height of the limiting rod can be adjusted according to the slope rate, and when the steel box girder slides, the guide rail at the bottom of the steel box girder can be adapted to the height of the roller on the limiting rod all the time.
The limiting rod is welded with an inclined stay bar 12 towards the outer side of the pier, the upper end of the inclined stay bar 12 is welded with the lower section 62 of the limiting rod, and the lower end of the inclined stay bar is embedded in the pier top concrete.
Claims (5)
1. The utility model provides a direction limit structure for steel box girder top pushes away installation, steel box girder supports in the pier top through walking jack, its characterized in that: two rows of brackets are symmetrically and fixedly arranged on the bottom surface of the steel box girder by taking the longitudinal center line of the steel box girder as a center line, and a through long I-shaped steel is welded on each row of brackets towards the outer side of the steel box girder to be used as a guide rail; the outer sides of the two guide rails at the top of each pier are respectively and vertically provided with a limiting rod, the lower ends of the limiting rods are embedded in pier top concrete, a roller is vertically arranged on each limiting rod, and the rollers are abutted to the outer sides of the guide rails.
2. The guiding and limiting structure for the incremental launching installation of the steel box girder according to claim 1, wherein: the bracket is connected with the steel box girder bottom plate through bolts.
3. The guiding and limiting structure for the incremental launching installation of the steel box girder according to claim 1, wherein: the utility model discloses a roller, including the gag lever post, the roller is located upper and lower backup pad, the last backup pad and the bottom suspension fagging of level setting are welded on the gag lever post, the cylinder is located between the upper and lower backup pad, and backup pad and bottom suspension fagging are run through respectively at the roller bearing both ends of cylinder.
4. The guiding and limiting structure for the incremental launching installation of the steel box girder according to claim 3, wherein: the limiting rod comprises an upper section and a lower section, the lower end of the lower section is embedded in pier body concrete, a plurality of pin holes are formed in the upper section and the lower section respectively along the longitudinal direction, the lower end of the upper section is overlapped with the upper end of the lower section, and positioning pins are inserted in the pin holes through which the upper section and the lower section penetrate; the drum is mounted on the upper section.
5. The guiding and limiting structure for the incremental launching installation of the steel box girder according to claim 4, wherein: an inclined stay bar is welded on the limiting rod towards the outer side of the pier, the upper end of the inclined stay bar is welded with the lower section of the limiting rod, and the lower end of the inclined stay bar is embedded in the pier top concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120706901.8U CN215164797U (en) | 2021-04-07 | 2021-04-07 | A direction limit structure for steel case roof beam pushes away installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120706901.8U CN215164797U (en) | 2021-04-07 | 2021-04-07 | A direction limit structure for steel case roof beam pushes away installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215164797U true CN215164797U (en) | 2021-12-14 |
Family
ID=79359511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120706901.8U Active CN215164797U (en) | 2021-04-07 | 2021-04-07 | A direction limit structure for steel case roof beam pushes away installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215164797U (en) |
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2021
- 2021-04-07 CN CN202120706901.8U patent/CN215164797U/en active Active
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