CN219808583U - Precast prestressed concrete composite beam - Google Patents
Precast prestressed concrete composite beam Download PDFInfo
- Publication number
- CN219808583U CN219808583U CN202320986818.XU CN202320986818U CN219808583U CN 219808583 U CN219808583 U CN 219808583U CN 202320986818 U CN202320986818 U CN 202320986818U CN 219808583 U CN219808583 U CN 219808583U
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- China
- Prior art keywords
- composite beam
- concrete
- concrete composite
- beam body
- prestressed
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- 239000002131 composite material Substances 0.000 title claims abstract description 73
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 19
- 239000004567 concrete Substances 0.000 claims abstract description 60
- 238000005187 foaming Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 12
- 239000011381 foam concrete Substances 0.000 claims abstract description 7
- 210000002435 tendon Anatomy 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
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- Rod-Shaped Construction Members (AREA)
Abstract
The utility model discloses a precast prestressed concrete composite beam, which comprises a concrete composite beam body, wherein flanges are arranged on two sides of the top of the concrete composite beam body, foam concrete is arranged in the middle of the concrete composite beam body, partition plates are arranged at two ends of the foam concrete, hanging rings are arranged on the partition plates, a plurality of stirrups are arranged on two sides of the concrete composite beam body, a cavity is arranged on one side of the partition plates, a plurality of non-prestressed ribs are arranged at the bottom of the concrete composite beam body, prestressed ribs are arranged on the flanges and two sides of the bottom of the concrete composite beam body, and a superposed layer is arranged on the top of the concrete composite beam body. The composite beam disclosed by the utility model is characterized in that the prestress technology and the foaming concrete technology are applied, the high-strength characteristic of the material is fully utilized, the self weight of the component is lightened while the strength is ensured, the shear strength is ensured by reserving hollow part filling concrete and reinforcing steel bars at the beam end, the anchoring of the reinforcing steel bars in the composite beam is solved, and the ductility of a connecting node is ensured.
Description
Technical Field
The utility model relates to the field of concrete composite beams, in particular to a prefabricated prestressed concrete composite beam.
Background
Compared with the traditional building, the assembled building has the greatest advantages of environmental protection and high efficiency, so the country always advocates and promotes the assembled building; however, the prefabricated parts are heavy, the volume is large, and the transportation cost and the hoisting cost are high; the composite beam formed by reinforced concrete has good integrity, less dead weight and obvious economic and social benefits compared with the entity Liang Yongliao, but the ductility and the integrity of node connection are insufficient due to the self-construction problem of many composite beams formed by reinforced concrete, so that the service life of the composite beam is influenced; a precast prestressed concrete composite girder is provided for this purpose.
Disclosure of Invention
The utility model aims to solve the problems that the prefabricated part is heavy, the dead weight of the beam is lightened through the structural advantage of the composite beam, and the manufacturing cost is reduced; the precast prestressed concrete composite beam is provided due to the fact that the problem of insufficient ductility and integrity of node connection occurs due to the self-construction problem.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a precast prestressed concrete composite beam, includes the concrete composite beam body, the top both sides of concrete composite beam body all are equipped with the edge of a wing, the middle part of concrete composite beam body is equipped with foaming concrete, foaming concrete's both ends all are equipped with the baffle, be equipped with rings on the baffle, be equipped with a plurality of stirrup on the both sides of concrete composite beam body, one side of baffle is equipped with the cavity, the bottom of concrete composite beam body is equipped with a plurality of non-prestressing tendons, all be equipped with prestressing tendons on the bottom both sides of edge of a wing and concrete composite beam body, the top of concrete composite beam body is equipped with the coincide layer.
As a preferable technical scheme of the utility model, a reinforcement cage is arranged in the concrete composite beam body, and the reinforcement cage is formed by connecting prestressed tendons, non-prestressed tendons and stirrups.
As a preferable technical scheme of the utility model, the partition board is made of concrete.
As a preferable technical scheme of the utility model, two cavities are arranged at two ends of the foaming concrete respectively.
As a preferable technical scheme of the utility model, the foaming concrete is arranged in the middle cavity of the concrete composite beam body.
The beneficial effects of the utility model are as follows: the composite beam disclosed by the utility model is characterized in that the prestress technology and the foaming concrete technology are applied, the high-strength characteristic of the material is fully utilized, the self weight of the component is lightened while the strength is ensured, the shear strength is ensured by reserving hollow part filling concrete and reinforcing steel bars at the beam end, the anchoring of the reinforcing steel bars in the composite beam is solved, and the ductility of a connecting node is ensured.
The prestressed composite beam adopts prestressed tendons and filled foam concrete, so that the dead weight of the prefabricated part is greatly reduced, the steel bars can be arranged at the hollow part of the beam end according to the requirement, and the ductility and the integrity of the connection between the shear strength of the beam end and the node are ensured.
Drawings
FIG. 1 is a perspective view of a precast prestressed concrete composite girder of the present utility model;
FIG. 2 is a schematic cross-sectional view of a precast prestressed concrete composite beam of the present utility model;
FIG. 3 is a schematic view of the structure of the precast prestressed concrete composite beam of the present utility model;
FIG. 4 is a schematic view of an inner formwork of a precast prestressed concrete composite beam according to the present utility model;
FIG. 5 is a schematic cross-sectional view of a precast prestressed concrete composite beam of the present utility model after casting.
In the figure: the steel plate comprises prestressed tendons 1, non-prestressed tendons 2, stirrups 3, hanging rings 4, foaming concrete 5, a partition plate 6, flanges 7, cavities 8, a laminated layer 9 and an inner template 10.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Examples: the utility model provides a precast prestressed concrete composite beam, includes the concrete composite beam body, the top both sides of concrete composite beam body all are equipped with edge of a wing 7, the middle part of concrete composite beam body is equipped with foaming concrete 5, foaming concrete 5's both ends all are equipped with baffle 6, be equipped with rings 4 on the baffle 6, be equipped with a plurality of stirrup 3 on the both sides of concrete composite beam body, one side of baffle 6 is equipped with cavity 8, the bottom of concrete composite beam body is equipped with a plurality of non-prestressing tendons 2, all be equipped with prestressing tendons 1 on edge of a wing 7 and the bottom both sides of concrete composite beam body, the top of concrete composite beam body is equipped with coincide layer 9.
The inside of the concrete composite beam body is provided with a reinforcement cage, and the reinforcement cage is formed by interconnecting prestressed tendons 1, non-prestressed tendons 2 and stirrups 3.
The partition 6 is made of concrete.
The cavities 8 are provided in two, respectively provided on both ends of the foamed concrete 5.
The foaming concrete 5 is arranged in the middle cavity of the concrete composite beam body.
Working principle: as shown in fig. 1-5, a prefabricated prestressed concrete composite beam is formed by firstly erecting a reinforcement cage, tensioning a prestressed rib 1, arranging an inner template 10 after tensioning is completed, forming a cavity 8 in the middle and at two ends after concrete pouring, arranging a concrete partition plate between the cavities, embedding lifting rings 4 in the partition plate 6, facilitating lifting and transporting of a component for subsequent use, curing the component, then placing and tensioning, cutting off the prestressed rib 1, and completing the application of prestress; then, pre-filling foam concrete 5 in the hollow part of the middle part, and curing to finish prefabrication of the composite beam; flanges 7 with certain lengths extend out of two sides of the upper part of the composite beam, a prestressed rib 1 is respectively arranged to ensure the strength of the extending part, the extending flanges 7 are arranged with a later laminated plate, and a reserved part of the upper part of a reinforced cage of the composite beam is used for pouring a laminated layer 9 in situ; and (3) hoisting the member after conveying the member to a construction site, arranging reinforcing steel bars at the cavities 8 at the two ends according to specific conditions, and filling the cavities 8 at the two ends of the concrete during pouring, so that the reinforcing steel bars and the concrete are better integrated and cooperatively work, and the shear strength of the composite beam is improved.
The composite beam adopts prestressed tendons to replace common steel bars, adopts an inner template to make the middle part of the beam into a hollow part, and pre-fills foaming concrete in the hollow part of the middle part so as to reduce the dead weight of a component; the novel connection mode of the prefabricated composite beam and the cast-in-situ wall column is characterized in that hollow areas are reserved at two ends of the beam, so that filling concrete is poured during construction, reinforcing steel bars can be configured according to specific conditions, the connection mode ensures the shear strength of the composite beam, ensures the ductility and the integrity of the connection of the composite beam, and is small in dead weight, more convenient and safer in transportation and hoisting.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (5)
1. The utility model provides a prefabricated prestressed concrete composite beam, includes concrete composite beam body, its characterized in that: the concrete composite beam body is characterized in that flanges (7) are arranged on two sides of the top of the concrete composite beam body, foam concrete (5) is arranged in the middle of the concrete composite beam body, partition boards (6) are arranged at two ends of the foam concrete (5), lifting rings (4) are arranged on the partition boards (6), a plurality of stirrups (3) are arranged on two sides of the concrete composite beam body, a cavity (8) is formed in one side of the partition boards (6), a plurality of non-prestressed tendons (2) are arranged at the bottom of the concrete composite beam body, prestressed tendons (1) are arranged on two sides of the bottoms of the flanges (7) and the concrete composite beam body, and a superposed layer (9) is arranged at the top of the concrete composite beam body.
2. A precast prestressed concrete composite girder according to claim 1, wherein: the concrete composite beam is characterized in that a reinforcement cage is arranged in the concrete composite beam body, and the reinforcement cage is formed by connecting prestressed tendons (1), non-prestressed tendons (2) and stirrups (3) with each other.
3. A precast prestressed concrete composite girder according to claim 1, wherein: the partition board (6) is made of concrete.
4. A precast prestressed concrete composite girder according to claim 1, wherein: the two cavities (8) are respectively arranged at two ends of the foaming concrete (5).
5. A precast prestressed concrete composite girder according to claim 1, wherein: the foaming concrete (5) is arranged in the middle cavity of the concrete composite beam body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320986818.XU CN219808583U (en) | 2023-04-27 | 2023-04-27 | Precast prestressed concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320986818.XU CN219808583U (en) | 2023-04-27 | 2023-04-27 | Precast prestressed concrete composite beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219808583U true CN219808583U (en) | 2023-10-10 |
Family
ID=88215822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320986818.XU Active CN219808583U (en) | 2023-04-27 | 2023-04-27 | Precast prestressed concrete composite beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219808583U (en) |
-
2023
- 2023-04-27 CN CN202320986818.XU patent/CN219808583U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |