CN211735078U - Concrete box girder temporary anchoring structure is assembled in prefabricated of segment section - Google Patents
Concrete box girder temporary anchoring structure is assembled in prefabricated of segment section Download PDFInfo
- Publication number
- CN211735078U CN211735078U CN201921860726.7U CN201921860726U CN211735078U CN 211735078 U CN211735078 U CN 211735078U CN 201921860726 U CN201921860726 U CN 201921860726U CN 211735078 U CN211735078 U CN 211735078U
- Authority
- CN
- China
- Prior art keywords
- steel
- sleeve
- temporary anchoring
- tooth block
- segmental
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a temporary anchoring structure of a segmental precast assembled concrete box girder, which is characterized in that a sleeve is pre-embedded in a segmental girder, bolt holes are arranged in the sleeve, and the openings of the bolt holes are upward and face the top of the segmental girder; the steel tooth block is installed on each prefabricated section beam, the steel tooth block is provided with a mounting hole and connected with the sleeve through a bolt, the steel tooth block is provided with a horizontal hole, and finish rolling twisted steel is stretched between the horizontal holes of the corresponding steel tooth blocks of the two adjacent prefabricated section beams to realize temporary anchoring. Through the structures and measures, the construction speed is greatly increased, the construction quality is guaranteed, and the overall landscape effect of the bridge is improved. The utility model relates to a very practical safe interim anchor scheme can extensively adopt when the construction of prefabricated segment roof beam.
Description
Technical Field
The utility model belongs to the technical field of bridge structural design and construction technique and specifically relates to a concrete box girder temporary anchoring structure is assembled in prefabricated of festival section.
Background
At present, along with the rapid development of urban construction, the design and construction scheme of urban bridges increasingly attaches importance to rapid construction, construction quality, landscape effect and the like. The technology of the segmental precast assembled concrete box girder has the advantages of high construction speed, good construction quality, small influence on the existing traffic and the surrounding environment and the like, and is more and more widely applied to the concrete bridge girder structure. The technical scheme of the reliable temporary anchoring of the segmental assembling box girder is an important guarantee for improving the engineering quality and reducing the safety risk. According to survey, the currently mainly adopted temporary anchoring technical schemes mainly comprise the following steps: (1) and penetrating the top bottom plate by using a bolt, fixing the steel tooth block, and performing finish rolling on the twisted steel on the steel tooth block. The method has certain defects, and the main beam is provided with a plurality of bolt holes, so that the landscape is greatly influenced. (2) And adopting a reinforced concrete tooth block, and oppositely pulling and finish rolling the twisted steel on the concrete tooth block. And after the concrete tooth block is used, the concrete tooth block needs to be cut off, so that the construction is inconvenient. (3) The concrete shear cone is adopted, and the method needs to open a slot on the top and bottom plates and then backfill the slot after use. The method needs to cut off the steel bars of the main beam, is unfavorable for the stress of the main beam and has a complex construction process. This utility model plans to adopt a pre-buried sleeve's mode to solve the problem that traditional interim anchor technical scheme exists to reach that construction quality is good, fast and the effectual purpose of view.
Disclosure of Invention
An object of the utility model is to provide a concrete box girder temporary anchoring structure is assembled in segmental prefabrication is applicable to the segmental prefabrication and assembles the girder, makes things convenient for the girder to assemble the interim anchor when being under construction.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a temporary anchoring structure for a segmental precast assembled concrete box girder is characterized in that a sleeve is pre-embedded in a segmental girder, bolt holes are formed in the sleeve, and the openings of the bolt holes are upward and face the top of the segmental girder; the steel tooth block is installed on each prefabricated section beam, the steel tooth block is provided with a mounting hole and connected with the sleeve through a bolt, the steel tooth block is provided with a horizontal hole, and finish rolling twisted steel is stretched between the horizontal holes of the corresponding steel tooth blocks of the two adjacent prefabricated section beams to realize temporary anchoring.
Furthermore, a steel plate is welded below the sleeve, and the steel plate is welded with the transverse steel bar of the main beam in the prefabricated section beam, so that the sleeve is firmly anchored and accurately positioned.
Further, a leveling steel plate is arranged between the steel tooth block and the prefabricated section beam.
Furthermore, positioning steel bars are further arranged in the prefabricated section beams.
Further, when the section beam is poured, rubber sealing materials are arranged in the sleeve to prevent concrete from blocking the sleeve.
And after tensioning the girder steel bundle, removing the finish rolling twisted steel and the steel tooth block, and grouting and sealing the bolt hole.
The utility model discloses utilize pre-buried sleeve anchor steel tooth piece to solve the problem that temporary anchoring operation is inconvenient, the atress is not good on prefabricated segment roof beam, accelerated construction speed greatly, construction quality has obtained the assurance. Compared with the prior art, the utility model have following advantage and effect: firstly, a steel sleeve is embedded, a main beam does not need to be penetrated, and the appearance quality of the main beam is good; secondly, a pre-embedded steel sleeve is adopted, the diameter of the sleeve is smaller, the main beam steel bars do not need to be cut off, and the safety of the main beam is facilitated; thirdly, the steel tooth blocks are anchored by bolts, so that the construction speed is high; fourthly, a steel plate is welded under the sleeve, and the steel plate is welded with the main beam steel bar, so that the construction quality is guaranteed.
Drawings
Fig. 1 is a sectional view of a temporary anchoring of a sectional box girder.
Fig. 2 is a plan view of a temporary anchoring of a section of box girder.
Fig. 3 is an elevation view of the installation of the steel tooth block.
Fig. 4 is a sectional view a-a of fig. 3.
The figure includes: the steel tooth block 1, the sleeve 2, the steel plate 3, the structure parting 4, the finish rolling twisted steel 5, the high-strength bolt 6, the leveling steel plate 7, the main beam transverse steel bar 8, the main beam transverse steel bar and steel plate welding part 9 and the positioning steel bar 10.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model relates to a concrete box girder temporary anchoring scheme is assembled in prefabricated of festival section, temporary anchoring device mainly contains: (1) the sleeve 2 is embedded in the prefabricated section beam; (2) a steel tooth block 1; (3) finish rolling the twisted steel 5, and the like. The main implementation process is as follows: (1) according to the section form of the main beam, the positions of the temporary anchoring tooth blocks are selected, as shown in fig. 1, the temporary anchoring tooth blocks are generally arranged on two sides of a web plate for symmetric anchoring, and the anchoring positions need to avoid the positions of the prestressed steel beams. (2) The sleeve 2 is embedded in the prefabricated segmental beam in advance, as shown in fig. 3, a steel plate 3 is welded below the sleeve 2, and the steel plate 3 is welded with the transverse steel bar 8 of the main beam, so that the sleeve is ensured to be anchored firmly and positioned accurately. (3) And rubber blocks are filled in the sleeve 2 to prevent cement paste from entering the sleeve when the segmental beam is poured. (4) And after the cast-in-place of the segmental beam is finished, the steel tooth block 1 is installed. (5) And hoisting the segment beam on the construction site, and stretching and fine rolling the twisted steel 5 for anchoring.
And a leveling steel plate 7 is arranged between the steel tooth block 1 and the prefabricated section beam. And positioning steel bars are also arranged in the prefabricated section beams. The leveling steel plate 7 has the function of ensuring the levelness of the steel tooth block 1, and the positioning steel bars ensure that the relative position of the embedded sleeve is unchanged.
Adopt the utility model discloses a temporary anchoring technical design and construction scheme, pre-buried steel sleeve in advance, and through measures such as steel sleeve welding steel sheet and steel sleeve and girder steel bar welding, ensure that the sleeve anchor is firm and accurate positioning, then through the purpose of on-the-spot quick installation steel construction tooth piece in order to reach quick safe construction. Through the structures and measures, the construction speed is greatly increased, the construction quality is guaranteed, and the overall landscape effect of the bridge is improved. The utility model relates to a very practical safe interim anchor scheme can extensively adopt when the construction of prefabricated segment roof beam.
It should be noted that many variations and modifications of the embodiments of the present invention are possible, which are fully described, and are not limited to the specific examples of the above embodiments. The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (4)
1. A temporary anchoring structure for a segmental precast assembled concrete box girder is characterized in that a sleeve is pre-embedded in a segmental girder, bolt holes are formed in the sleeve, and the openings of the bolt holes are upward and face the top of the segmental girder; the steel tooth block is installed on each prefabricated section beam, the steel tooth block is provided with a mounting hole and connected with the sleeve through a bolt, the steel tooth block is provided with a horizontal hole, and finish rolling twisted steel is stretched between the horizontal holes of the corresponding steel tooth blocks of the two adjacent prefabricated section beams to realize temporary anchoring.
2. A temporary anchoring structure according to claim 1, wherein: the steel plate is welded below the sleeve, and the steel plate is welded with the transverse steel bar of the main beam in the prefabricated section beam, so that the sleeve is firmly anchored and accurately positioned.
3. A temporary anchoring structure according to claim 1, wherein: and a leveling steel plate is arranged between the steel tooth block and the prefabricated section beam.
4. A temporary anchoring structure according to claim 1, wherein: and positioning steel bars are also arranged in the prefabricated section beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921860726.7U CN211735078U (en) | 2019-10-31 | 2019-10-31 | Concrete box girder temporary anchoring structure is assembled in prefabricated of segment section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921860726.7U CN211735078U (en) | 2019-10-31 | 2019-10-31 | Concrete box girder temporary anchoring structure is assembled in prefabricated of segment section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211735078U true CN211735078U (en) | 2020-10-23 |
Family
ID=72874587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921860726.7U Active CN211735078U (en) | 2019-10-31 | 2019-10-31 | Concrete box girder temporary anchoring structure is assembled in prefabricated of segment section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211735078U (en) |
-
2019
- 2019-10-31 CN CN201921860726.7U patent/CN211735078U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107476476B (en) | One kind is greatly across steel bar truss floor support plate and reinforced beam combination constructing method thereof | |
| CN105735112B (en) | Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier | |
| CN110847041A (en) | Temporary anchoring structure and anchoring method for segmental prefabricated assembled concrete box girder | |
| US11225803B2 (en) | Prestressed bailey beam for reinforcement and construction method therefor | |
| CN108978434B (en) | Bracket-free industrialized construction method of steel-concrete combined continuous box girder bridge | |
| CN108867310A (en) | The short rib T beam bridge of pretensioning prestressed concrete and its construction method | |
| CN111455865A (en) | Temporary pre-stressed anchoring device for assembling precast concrete segment box girder | |
| CN108611991A (en) | A kind of novel reinforced Old arch bridge structure | |
| CN107604927A (en) | A kind of composite piled anchor suspension device | |
| CN111364355A (en) | Assembled reinforced concrete side anti-collision guardrail for connecting bridges and construction method | |
| CN108951399A (en) | A kind of Single-box multi-chamber box beam bridge and its construction method | |
| CN212200051U (en) | Assembled reinforced concrete side anti-collision guardrail for connecting bridge | |
| CN113152339A (en) | Concrete guardrail attached type fixed die pouring construction method | |
| CN109457568A (en) | A kind of beam prefabricated post-stressed assembly construction Craft of bilateral overlapping | |
| CN111364356A (en) | Assembled reinforced concrete side anti-collision guardrail for connecting bridge | |
| CN110552706A (en) | Permanent-temporary combined shield hoisting hole sealing structure and method | |
| CN107604926A (en) | A kind of composite piled anchor method for protecting support | |
| CN107355008A (en) | A kind of prefabricated attachment structure and method of newly-increased steel core concrete column and existing structure | |
| CN210031483U (en) | Prefabricated pier connection structure | |
| CN211735078U (en) | Concrete box girder temporary anchoring structure is assembled in prefabricated of segment section | |
| CN210529936U (en) | Steel pipe concrete column-I-shaped steel beam connecting node | |
| CN209114299U (en) | A kind of Single-box multi-chamber box beam bridge | |
| Hulme et al. | SINGAPORE MASS RAPID TRANSIT SYSTEM: CONSTRUCTION. | |
| CN211900603U (en) | Face combination shield structure hole of hoist enclosed construction forever | |
| CN212200050U (en) | Assembled reinforced concrete side anti-collision guardrail for connecting bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |