CN219793681U - Rear anchoring structure for preventing steel truss girder support from being hollow - Google Patents
Rear anchoring structure for preventing steel truss girder support from being hollow Download PDFInfo
- Publication number
- CN219793681U CN219793681U CN202321316513.4U CN202321316513U CN219793681U CN 219793681 U CN219793681 U CN 219793681U CN 202321316513 U CN202321316513 U CN 202321316513U CN 219793681 U CN219793681 U CN 219793681U
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- CN
- China
- Prior art keywords
- steel truss
- truss girder
- shoulder pole
- counterweight base
- extension
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 238000004873 anchoring Methods 0.000 title abstract description 6
- 238000010276 construction Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to a rear anchoring structure for preventing a steel truss girder support from being emptied, wherein two ends of the steel truss girder are respectively supported on supports on two capping girders, the steel truss girder is provided with a longitudinal slope, the ends of two lower chords at the higher end of the steel truss girder are respectively welded with an extension bar along the longitudinal direction of the lower chords, the extension bars extend to the outer side of the capping girders, the bottoms of the two extension bars are respectively welded with a limiting bar vertical to a horizontal plane, and the two limiting bars are clung to the outer sides of the capping girders; and two extension bars are welded with a shoulder pole beam along the bridge direction, a counterweight base is arranged on a bearing platform below the cover beam and is opposite to the shoulder pole beam, a balancing weight is placed on the counterweight base, and two ends of the shoulder pole beam are respectively connected with the counterweight base through counter-pulling steel wire ropes. The utility model can form transverse and vertical constraint on the steel truss girder and effectively prevent the end part of the steel truss girder from being hollow.
Description
Technical Field
The utility model belongs to the technical field of bridge construction, relates to steel truss bridge construction, and in particular relates to a rear anchoring structure for preventing a steel truss support from being hollow.
Background
The steel truss bridge is a bridge with girder steel of truss structure as girder. As shown in fig. 1, in the construction process of the steel truss bridge, after the span steel truss 10 is installed in place, the permanent structure of the bridge is not formally formed at this time, and in the case that a longitudinal slope exists in the bridge, the steel truss has a tendency of sliding downwards towards the lower end and tilting upwards towards the higher end, and because the contact surfaces between the two ends of the steel truss and the support 8 at the top of the capping beam 9 are smaller, the higher end of the steel truss is easily emptied at the support, so that serious safety accidents are caused.
Disclosure of Invention
The utility model aims to solve the problems and provide a rear anchoring structure for preventing the steel truss girder support from being hollow, so that construction safety is ensured.
The technical scheme of the utility model is as follows:
a prevent that steel truss girder support department from taking off back anchor structure of sky, steel truss girder both ends are supported respectively on the support on two bent caps of a bridge of striding, and steel truss girder is equipped with longitudinal slope, its characterized in that: the ends of the two lower chords at the higher end of the steel truss girder are respectively welded with an extension rod along the longitudinal direction of the lower chords, the extension rods extend to the outer side of the capping beam, the bottoms of the two extension rods are respectively welded with a limiting rod vertical to the horizontal plane, and the two limiting rods are clung to the outer side of the capping beam; and two extension bars are welded with a shoulder pole beam along the bridge direction, a counterweight base is arranged on a bearing platform below the cover beam and is opposite to the shoulder pole beam, a counterweight is placed on the counterweight base, and two ends of the shoulder pole beam are respectively connected with the counterweight base through counter-pulling steel wire ropes.
The utility model can form vertical and horizontal effective constraint on the steel truss girder at the support of the end part of the steel truss girder, thereby preventing the support from being hollow, ensuring the construction safety, and the anchoring structure has convenient construction and no damage to the steel truss girder structure.
Drawings
FIG. 1 is a schematic view of an installed state of a steel truss girder spanning a longitudinal slope;
FIG. 2 is a schematic illustration of a forward bridge structure of the present utility model;
FIG. 3 is a schematic view of the transverse bridge structure of the present utility model;
fig. 4 is a schematic plan view of a counterweight base on a bearing platform.
Detailed Description
As shown in fig. 2, 3 and 4, two ends of a steel truss girder 10 are respectively supported on a support 8 on a bridge-spanning two bent caps 9, the steel truss girder is provided with a longitudinal slope, the ends of two lower chords 101 at the higher end of the steel truss girder 10 are respectively welded with an extension rod 1 along the longitudinal direction of the lower chords, the extension rods extend to the outer side of the bent caps, the bottoms of the two extension rods 1 are respectively welded with a limiting rod 2 vertical to the horizontal plane, and the two limiting rods 2 are tightly attached to the outer side of the bent caps 9; and a shoulder pole beam 3 is welded on the two extension bars 1 along the bridge direction, a counterweight base 4 is arranged on a bearing platform 7 below the cover beam and is opposite to the shoulder pole beam, a counterweight 5 is arranged on the counterweight base 4, and two ends of the shoulder pole beam 3 are respectively connected with the counterweight base 4 through a counter-pulling steel wire rope 6.
The counterweight base can be welded into a rectangular frame by adopting profile steel, and is horizontally placed on the bearing platform, and the counterweight block is placed on the counterweight base. And the lug plates are welded on the section steel, so that the section steel is convenient to be connected with the counter-pulling steel wire rope.
In the above structure, since the steel truss girder 10 is provided with a 2% longitudinal slope, the steel truss girder has a tendency to slide down toward the lower end, and the center of gravity moves down while the steel truss girder slides down, and the higher end of the steel truss girder has a tendency to tilt up. However, the limiting rod 3 is tightly attached to the outer side of the capping beam 9, so that the steel truss beam 10 can be prevented from sliding downwards, meanwhile, two ends of the shoulder pole beam 3 are connected with the counterweight base 4 on the bearing platform through the counter-pulling steel wire rope 6, the end part of the steel truss beam can be prevented from tilting upwards, the steel truss beam can be fixed, and the end part of the steel truss beam 10 is effectively prevented from falling off at the bearing 8.
Claims (1)
1. A prevent that steel truss girder support department from taking off back anchor structure of sky, steel truss girder both ends are supported respectively on the support on two bent caps of a bridge of striding, and steel truss girder is equipped with longitudinal slope, its characterized in that: the ends of the two lower chords at the higher end of the steel truss girder are respectively welded with an extension rod along the longitudinal direction of the lower chords, the extension rods extend to the outer side of the capping beam, the bottoms of the two extension rods are respectively welded with a limiting rod vertical to the horizontal plane, and the two limiting rods are clung to the outer side of the capping beam; and two extension bars are welded with a shoulder pole beam along the bridge direction, a counterweight base is arranged on a bearing platform below the cover beam and is opposite to the shoulder pole beam, a counterweight is placed on the counterweight base, and two ends of the shoulder pole beam are respectively connected with the counterweight base through counter-pulling steel wire ropes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321316513.4U CN219793681U (en) | 2023-05-28 | 2023-05-28 | Rear anchoring structure for preventing steel truss girder support from being hollow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321316513.4U CN219793681U (en) | 2023-05-28 | 2023-05-28 | Rear anchoring structure for preventing steel truss girder support from being hollow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219793681U true CN219793681U (en) | 2023-10-03 |
Family
ID=88155720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321316513.4U Active CN219793681U (en) | 2023-05-28 | 2023-05-28 | Rear anchoring structure for preventing steel truss girder support from being hollow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219793681U (en) |
-
2023
- 2023-05-28 CN CN202321316513.4U patent/CN219793681U/en active Active
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