CN214573415U - Prefabricated UHPC diaphragm device of assembling of concrete box girder - Google Patents
Prefabricated UHPC diaphragm device of assembling of concrete box girder Download PDFInfo
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- CN214573415U CN214573415U CN202120028150.9U CN202120028150U CN214573415U CN 214573415 U CN214573415 U CN 214573415U CN 202120028150 U CN202120028150 U CN 202120028150U CN 214573415 U CN214573415 U CN 214573415U
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Abstract
The utility model relates to a UHPC diaphragm plate device for prefabricating and assembling a small concrete box girder, which comprises a UHPC diaphragm plate assembled at the inner side of the small box girder; the two sides of the UHPC transverse partition plate are provided with flange plates, the outer surfaces of the flange plates are reserved with a plurality of bolt reserved holes, and correspondingly, bolts corresponding to the bolt reserved holes are pre-embedded in the small box girder and inserted into the bolt reserved holes for attaching the flange plates to the inner side of the small box girder; the utility model relates to a precast assembly UHPC cross slab of concrete small box girder, aim at realize the advantage that can full play UHPC material and satisfy the reinforced requirement of the horizontal contact of small box girder, can be fast convenient completion again simultaneously and consolidate the construction.
Description
Technical Field
The utility model belongs to the technical field of bridge maintenance reinforcing apparatus, concretely relates to prefabricated assembly UHPC cross slab device of concrete small box girder.
Background
The concrete box girder bridge is widely applied to small and medium-span bridges due to the advantages of large torsional rigidity, low beam height, definite structural stress and the like. The transverse rigidity of the small box girder bridge is insufficient due to the influences of the previous design experience constraints, vehicle overload, the small box girder support seat is empty and the like, so that the overall stress performance of the bridge is reduced, and the structure safety is influenced. The transverse connection reinforcement of the small box girder can select the modes of adding section steel between the girders and pouring concrete transverse connection between the girders, but the reinforcement modes have certain problems, for example, the adding section steel between the girders has limited reinforcement effect and often has the problem of steel plate corrosion in the later period, and the pouring concrete transverse connection reinforcement site construction is more complicated and the like.
With the development and continuous popularization of ultra-high performance concrete (UHPC), due to its good tensile property and high durability, UHPC has been gradually applied to bridge repair and reinforcement, including orthotropic steel bridge deck pavement treatment, hollow slab bridge hinge joint reinforcement, and the like. However, because UHPC construction is harsh to the curing conditions, the expected reinforcing effect is often difficult to achieve by directly increasing the transverse connection of the bridge through cast-in-situ UHPC concrete.
In view of the above technical problems, improvements are needed.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the defect among the prior art, provide a simple structure, design benefit ensures to consolidate the effect, promotes the concrete trabecula roof beam prefabrication assembly UHPC cross slab device of consolidating efficiency.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a kind of concrete small box girder prefabrication assembles the UHPC diaphragm plate device, including assembling in the UHPC diaphragm plate of the small box girder inboard; and the two sides of the UHPC transverse partition plate are provided with flange plates, the outer surfaces of the flange plates are reserved with a plurality of bolt reserved holes, and correspondingly, bolts corresponding to the bolt reserved holes are pre-embedded in the small box girder and inserted into the bolt reserved holes for attaching the flange plates to the inner side of the small box girder.
As an optimized proposal of the utility model, the bottom of the small box girder and the bottom of the UHPC diaphragm are on the same horizontal plane.
As an optimized proposal of the utility model, the small box girder and the flange plate are bonded by bonding colloid.
As an optimized scheme of the utility model, the bolt preformed hole is provided with four, and the flange board both sides are laid to the symmetry.
As an optimized scheme of the utility model, rubber seal is installed at the edge of flange board, and rubber seal laminates in the periphery of flange board.
As an optimized scheme of the utility model, the injecting glue mouth is installed to the bottom of flange board, and the mouth of gluing is installed out at the top of flange board.
The utility model has the advantages that:
1. the utility model relates to a reinforcement method of a UHPC diaphragm plate for prefabricating and assembling a small concrete box girder, which aims to realize that reinforcement construction can be rapidly and conveniently completed while the advantages of UHPC materials can be fully exerted and the requirement of transverse connection reinforcement of the small box girder can be satisfied;
2. the utility model discloses simple structure, design benefit from the angle of assemblization, adopts the prefabricated diaphragm plate of UHPC material to carry out the trabecula and consolidates, can make full use of the good tensile properties of UHPC and high durability, has avoided cast in situ and health preserving concrete again, and the mode of pushing up in advance through the bolt applys certain prestressing force to strengthening the tie coat in addition, has improved the reliability of being connected between prefabricated UHPC diaphragm plate and the trabecula.
Drawings
FIG. 1 is a schematic cross-sectional view illustrating a reinforcement of a UHPC diaphragm plate in a prefabricated assembly of a small concrete box girder;
FIG. 2 is a sectional view of the embodiment A-A of the present invention;
FIG. 3 is a schematic view of a UHPC diaphragm according to an embodiment of the present invention;
reference numbers in the figures: the small box girder comprises a small box girder 1, a UHPC precast slab 2, a flange plate 3, adhesive colloid 4, bolts 5, an adhesive injection nozzle 6, an adhesive discharge nozzle 7, sealing colloid 8 and bolt preformed holes 9.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1 to 3, the apparatus for prefabricating and assembling a UHPC diaphragm plate for a small concrete box girder provided by this embodiment includes a UHPC diaphragm plate 2 assembled inside a small box girder 1; in the prior art, a small box girder 1 is not provided with a middle diaphragm plate, and the transverse integrity of the small box girder 1 can be improved after the UHPC diaphragm plate 2 is added for reinforcement; both sides of the UHPC diaphragm plate 2 are provided with flange plates 3, and the UHPC diaphragm plate 2 in the embodiment adopts factory prefabrication and high-temperature steam curing for a truss structure poured by UHPC materials. In order to increase the bonding area between the UHPC diaphragm 2 and the small box girder 1, flange plates 3 are added on two sides of the UHPC diaphragm 2, and the surfaces of the flange plates 3, which are in contact with the small box girder 1, are subjected to rough treatment; the utility model relates to a reinforcement method of prefabricated assembly UHPC cross slab of concrete small box girder, aim at realize can full play UHPC material the advantage with satisfy the reinforced requirement of small box girder transverse connection, the construction is consolidated to completion that can be convenient fast again simultaneously.
In order to facilitate installation, a plurality of bolt preformed holes 9 are reserved on the outer surface of the flange plate 3, correspondingly, bolts 5 corresponding to the bolt preformed holes 9 are pre-embedded in the small box girder 1, and the bolts 5 are inserted into the bolt preformed holes 9 and used for attaching the flange plate 3 to the inner side of the small box girder 1; specifically, four bolt preformed holes 9 are arranged and symmetrically distributed on two sides of the flange plate 3; the bolts 5 are pre-embedded members when the UHPC transverse partition plate 2 is prefabricated, and have the functions that after the UHPC transverse partition plate 2 is installed and positioned, the bolts 5 tightly prop the small box girder 1 and then fix the UHPC transverse partition plate 2, and after the adhesive colloid 4 is poured, the bolts 5 are released and then certain pre-pressure is applied to the adhesive colloid.
The bottom of the small box girder 1 and the bottom of the UHPC diaphragm plate 2 are on the same horizontal plane, and the small box girder 1 and the flange plate 3 are bonded through the adhesive 4. Wherein, the adhesive colloid 4 should adopt A-grade adhesive meeting the specification and design requirements.
The edge of the flange plate 3 is provided with a rubber sealing ring 8, and the rubber sealing ring 8 is attached to the periphery of the flange plate 3; the rubber sealing ring 8 is attached to the periphery of the flange plate 3; the edge sealing is used when the adhesive colloid 4 is injected into the flange plate 3.
The bottom of the flange plate 3 is provided with a glue injection nozzle 6, and the top of the flange plate 3 is provided with a glue outlet nozzle 7; and after the glue injection nozzle 6 and the glue outlet nozzle 7 are installed, sealing the periphery of the UHPC diaphragm plate flange plate 3.
A method for reinforcing a UHPC transverse clapboard device for prefabricating and assembling a small concrete box girder comprises the following steps:
firstly, prefabricating a UHPC transverse clapboard 2 in a factory according to the transverse distance and the web height of a small box girder 1; two sides of the UHPC diaphragm plate 2 are provided with flange plates 3;
step two, lofting the position of the UHPC transverse clapboard 2 to be installed in the small box girder 1, and roughening the surface;
step three, installing the UHPC diaphragm plate 2 on site, pre-screwing the bolt 5, ensuring that the bolt 5 tightly props against the web plate of the small box girder 1, and applying a certain reverse pre-pressure to the UHPC diaphragm plate 2;
step four, installing a glue injection nozzle 6 and a glue outlet nozzle 7, sealing the periphery of the flange plate 3 of the UHPC transverse clapboard 2 by adopting a sealing colloid 8 to form a closed space, and carrying out closure inspection;
step five, injecting the adhesive 4 from the adhesive injection nozzle in a mode from bottom to top until the adhesive liquid continuously flows out of the adhesive outlet nozzle 7, and continuously maintaining the pressure for a certain time after the adhesive outlet nozzle 7 is closed to complete the adhesive injection;
and step six, after the adhesive colloid 4 is solidified and the bolt 5 is loosened, applying certain pre-pressure to the adhesive colloid 4, and finishing transverse connection reinforcement of the small box girder 1.
The utility model discloses simple structure, design benefit from the angle of assemblization, adopts the prefabricated diaphragm plate of UHPC material to carry out the trabecula and consolidates, can make full use of the good tensile properties of UHPC and high durability, has avoided cast in situ and health preserving concrete again, and the mode of pushing up in advance through the bolt applys certain prestressing force to strengthening the tie coat in addition, has improved the reliability of being connected between prefabricated UHPC diaphragm plate and the trabecula.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the small box girder 1, the UHPC precast slab 2, the flange slab 3, the adhesive 4, the bolt 5, the glue injection nozzle 6, the glue outlet nozzle 7, the sealing adhesive 8, the bolt preformed hole 9 and other terms, but the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (6)
1. The utility model provides a prefabricated assembly UHPC cross slab device of concrete box girder which characterized in that: comprises a UHPC diaphragm plate (2) which is assembled at the inner side of a small box girder (1); the two sides of the UHPC transverse partition plate (2) are provided with flange plates (3), the outer surfaces of the flange plates (3) are reserved with a plurality of bolt reserved holes (9), correspondingly, bolts (5) corresponding to the bolt reserved holes (9) are pre-embedded in the small box girder (1), and the bolts (5) are inserted into the bolt reserved holes (9) and used for attaching the flange plates (3) to the inner side of the small box girder (1).
2. The device for prefabricating and assembling the UHPC transverse clapboard of the concrete small box girder according to the claim 1, is characterized in that: the bottom of the small box girder (1) and the bottom of the UHPC diaphragm plate (2) are on the same horizontal plane.
3. The device for prefabricating and assembling the UHPC transverse clapboard of the concrete small box girder according to the claim 2, is characterized in that: the small box girder (1) and the flange plate (3) are bonded through the adhesive colloid (4).
4. The device for prefabricating and assembling the UHPC transverse clapboard of the concrete small box girder according to the claim 1, is characterized in that: the number of the bolt preformed holes (9) is four, and the bolt preformed holes are symmetrically distributed on two sides of the flange plate (3).
5. The device for prefabricating and assembling the UHPC transverse clapboard of the concrete small box girder according to the claim 4, is characterized in that: rubber seal (8) are installed at the edge of flange board (3), and rubber seal (8) laminate in the periphery of flange board (3).
6. The device for prefabricating and assembling the UHPC transverse clapboard of the concrete small box girder according to the claim 5, is characterized in that: glue injection nozzles (6) are installed at the bottoms of the flange plates (3), and glue outlet nozzles (7) are installed at the tops of the flange plates (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120028150.9U CN214573415U (en) | 2021-01-04 | 2021-01-04 | Prefabricated UHPC diaphragm device of assembling of concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120028150.9U CN214573415U (en) | 2021-01-04 | 2021-01-04 | Prefabricated UHPC diaphragm device of assembling of concrete box girder |
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| CN214573415U true CN214573415U (en) | 2021-11-02 |
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| CN202120028150.9U Active CN214573415U (en) | 2021-01-04 | 2021-01-04 | Prefabricated UHPC diaphragm device of assembling of concrete box girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726433A (en) * | 2021-01-04 | 2021-04-30 | 浙江交工集团股份有限公司 | UHPC transverse clapboard device for prefabricating and assembling concrete small box girder and reinforcing method thereof |
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2021
- 2021-01-04 CN CN202120028150.9U patent/CN214573415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726433A (en) * | 2021-01-04 | 2021-04-30 | 浙江交工集团股份有限公司 | UHPC transverse clapboard device for prefabricating and assembling concrete small box girder and reinforcing method thereof |
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