CN211646028U - Temporary anchoring structure for long-span cantilever beam - Google Patents
Temporary anchoring structure for long-span cantilever beam Download PDFInfo
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- CN211646028U CN211646028U CN201922433151.7U CN201922433151U CN211646028U CN 211646028 U CN211646028 U CN 211646028U CN 201922433151 U CN201922433151 U CN 201922433151U CN 211646028 U CN211646028 U CN 211646028U
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Abstract
The utility model discloses a stride footpath greatly and encorbelment interim anchor structure of watering roof beam soon sets up interim stand in the both sides of the pier of the footpath of striding greatly and encorbelmenting the roof beam, interim stand cross bridge is to arranging corresponding to the box girder web, the main muscle of interim stand adopts the twisted steel, in the cushion cap was gone into in the bottom anchor of the main muscle of interim stand, the box girder web is gone into in the top anchor of the main muscle of interim stand. The unbalanced bending moment of the utility model is borne by the reinforced concrete upright post, the pier top temporary support and the temporary anchoring are not needed to be arranged in the measure, the structure is simple and easy to operate, and the later-stage dismantling is simple and easy; compared with the steel tube concrete upright post, the construction cost is low, and the construction method has better construction operability and good economic benefit.
Description
Technical Field
The utility model relates to a bridge building technical field especially relates to a long span hangs and waters roof beam temporary anchoring structure.
Background
Unbalanced bending moment is easily generated in the process of pouring the cantilever by the long-span continuous beam, and temporary anchoring is needed to bear the unbalanced bending moment. The temporary anchoring requires that the beam body pressure and unbalanced bending moment in the construction process can be borne under the condition that the permanent support does not bear the pressure, and the temporary anchoring is easy to detach under the condition of bearing the load.
Referring to fig. 1: the following two types of temporary anchoring measures are commonly used at present: (1) pre-burying prestressed screw steel at the pier top to anchor the pier and the girder No. 0 block together; (2) the concrete filled steel tube temporary buttress is arranged on the bearing platform, and the concrete filled steel tube temporary buttress is solidified between the bearing platform and the beam bottom through the prestressed tendons of the temporary buttress. The method (1) needs to arrange a temporary support, the later temporary support is difficult to remove, and the prestressed deformed steel bar is easy to damage the permanent support when being cut and removed. In the method (2), the steel pipe is filled with the micro-expansion concrete, so that the steel pipe concrete is difficult to demolish and has high cost.
The person skilled in the art is dedicated to solving the above technical drawbacks.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, the technical purpose of the present invention is to solve the problems mentioned in the background art.
In order to realize the technical purpose, the utility model provides a long span is hung and is watered interim anchor structure of roof beam sets up interim stand in the both sides of the pier of the roof beam of long span hanging and watering, interim stand cross bridge is to arranging corresponding to the box girder web, the main muscle of interim stand adopts the twisted steel.
Preferably, the bottom of the main rib of the temporary upright column is anchored into the bearing platform, and the top of the main rib of the temporary upright column is anchored into the box girder web.
Preferably, the joint of the box girder web plate and the main rib is locally thickened.
The utility model has the advantages that:
due to the structural design, the unbalanced bending moment is borne by the reinforced concrete temporary upright post, the structure does not need to be provided with a pier top temporary support and temporary anchoring, the structure is simple and easy to operate, and the later-stage dismantling is simple and easy; compared with the steel tube concrete upright post, the construction cost is low, and the construction method has better construction operability and good economic benefit.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
fig. 2 is a schematic view of the vertical structure of the present invention;
fig. 3 is a schematic sectional view of the present invention.
In the figure: 1 pier, 2 temporary columns, 3 bearing platforms, 4 box girder webs, 5 girder block 0 and 6 girder block 1.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Example (b):
as shown in fig. 2-3, a temporary anchoring structure for a large-span cantilever beam is provided, wherein temporary columns 2 are arranged on two sides of a pier 1 of the large-span cantilever beam, and the temporary columns 2 are transversely arranged corresponding to a box girder web 4.
Specifically, the temporary stand column 2 adopts a reinforced concrete stand column, the main reinforcement of the temporary stand column 2 adopts a deformed steel bar with the diameter of 32mm, the bottom of the main reinforcement of the temporary stand column 2 is anchored into the bearing platform 3, and the top of the main reinforcement of the temporary stand column 2 is anchored into the box girder web 4.
Specifically, in order to meet the requirement of the anchoring length of the main reinforcement of the temporary upright post 2, the local box girder web 4 needs to be thickened.
Specifically, the size and the reinforcing bars of the reinforced concrete column are determined by calculation, and the anchoring length of the reinforcing bars needs to meet the requirements of relevant specifications.
Specifically, compared with the prior art: firstly, two sides of a No. 0 main beam block 5 are provided with No. 1 main beam blocks 6, prestressed screw steel is pre-embedded at the top of a pier to anchor the pier and the No. 0 main beam block 5 together; and secondly, arranging a concrete filled steel tube temporary buttress on the bearing platform 3, and forming consolidation between the bearing platform and the beam bottom through prestressed tendons of the temporary buttress.
This structure need not to set up pier top temporary support and interim anchor, and the simple structure is easily operated, and the simple accurate is demolishd in later stage, also low for the steel pipe concrete stand cost, has better construction maneuverability and good economic benefits.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (3)
1. The utility model provides a long span hangs and waters roof beam temporary anchoring structure which characterized in that: set up interim stand (2) in the both sides of pier (1) of the long span cantilever beam of watering, interim stand (2) cross bridge is to arranging corresponding to box girder web (4), the main muscle of interim stand (2) adopts the twisted steel.
2. The long-span cantilever beam temporary anchoring structure of claim 1, wherein: the bottom of the main rib of the temporary upright post (2) is anchored into the bearing platform (3), and the top of the main rib of the temporary upright post (2) is anchored into the box girder web (4).
3. The long-span cantilever beam temporary anchoring structure of claim 1 or 2, wherein: the box girder web (4) and the main rib joint of the temporary upright post (2) are locally thickened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433151.7U CN211646028U (en) | 2019-12-30 | 2019-12-30 | Temporary anchoring structure for long-span cantilever beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433151.7U CN211646028U (en) | 2019-12-30 | 2019-12-30 | Temporary anchoring structure for long-span cantilever beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211646028U true CN211646028U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922433151.7U Active CN211646028U (en) | 2019-12-30 | 2019-12-30 | Temporary anchoring structure for long-span cantilever beam |
Country Status (1)
| Country | Link |
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| CN (1) | CN211646028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411386A (en) * | 2020-11-26 | 2021-02-26 | 中铁三局集团有限公司 | Method for erecting and dismantling continuous beam No. 0 block reinforced concrete-filled steel tube support |
| CN114687298A (en) * | 2022-03-31 | 2022-07-01 | 中交路桥华南工程有限公司 | Ultrahigh vertical temporary anchoring structure and construction method thereof |
-
2019
- 2019-12-30 CN CN201922433151.7U patent/CN211646028U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411386A (en) * | 2020-11-26 | 2021-02-26 | 中铁三局集团有限公司 | Method for erecting and dismantling continuous beam No. 0 block reinforced concrete-filled steel tube support |
| CN114687298A (en) * | 2022-03-31 | 2022-07-01 | 中交路桥华南工程有限公司 | Ultrahigh vertical temporary anchoring structure and construction method thereof |
| CN114687298B (en) * | 2022-03-31 | 2023-10-20 | 中交路桥华南工程有限公司 | Super-high vertical temporary anchoring structure and construction method thereof |
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