CN210395851U - Assembled concrete superposed beam - Google Patents
Assembled concrete superposed beam Download PDFInfo
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- CN210395851U CN210395851U CN201921107939.2U CN201921107939U CN210395851U CN 210395851 U CN210395851 U CN 210395851U CN 201921107939 U CN201921107939 U CN 201921107939U CN 210395851 U CN210395851 U CN 210395851U
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Abstract
The utility model discloses an assembly type concrete superposed beam, which comprises a precast beam (1), a shear connector (3), a precast beam steel bar structure (4) and a cast-in-situ beam steel bar structure (5); the precast beam steel bar structure (4) is arranged in the precast beam (1), and the lower end of the shear connector (3) is arranged at the top of the precast beam (1); the cast-in-place beam steel bar structure (5) is arranged at the top of the precast beam (1), and concrete is poured to form the cast-in-place beam (2); the upper end of the shear connector (3) is poured in the cast-in-place beam (2), and the precast beam (1) is connected with the cast-in-place beam (2) through the shear connector (3) to form a superposed beam body. The utility model discloses both can regard as the bottom template of cast in situ concrete part, can avoid traditional superposed beam stirrup to expose again, push up the muscle and wear the muscle complicated, pour quality defect such as not high, can improve prefabricated component's efficiency of construction greatly.
Description
Technical Field
The utility model relates to an assembly type structure especially relates to an assembly type concrete superposed beam.
Background
With the transformation of the building industry and the requirements of energy conservation and emission reduction of the building industry in China, the innovation of the design of the fabricated building, the optimization of the production of parts, the promotion of the level of the fabricated construction and the popularization of the application of green building materials are promoted as the reform direction of the building industry in China. The precast concrete superposed beam is used as an important structural member, is widely applied to precast assembled concrete buildings, and has larger total use amount.
At present, the traditional composite beam exposes a plurality of problems in use, such as easy breakage and deformation of exposed stirrups, collision of the exposed stirrups and the stirrups of a composite floor slab, inconvenience in construction when a top reinforcement penetrates into the stirrups of the prefabricated composite beam, and the like, and the labor intensity of on-site construction correction and reinforcement binding is large, the construction efficiency is low, the quality is not easy to guarantee, and the improvement of the construction efficiency of the fabricated building is limited.
Disclosure of Invention
An object of the utility model is to provide an assembled concrete superposed beam both can regard as the bottom template of cast in situ concrete part, can avoid again that traditional superposed beam stirrup exposes, the muscle is worn to the top muscle complicated, pour quality defect such as not high, can improve prefabricated component's efficiency of construction greatly.
The utility model discloses a realize like this:
an assembled concrete superposed beam comprises a precast beam, a shear connector, a precast beam reinforcing steel bar structure and a cast-in-place beam reinforcing steel bar structure; the precast beam steel bar structure is arranged in the precast beam, and the lower end of the shear connector is arranged at the top of the precast beam; the cast-in-place beam steel bar structure is arranged at the top of the precast beam, and concrete is poured to form the cast-in-place beam; the upper end of the shear connector is poured in the cast-in-place beam, and the precast beam is connected with the cast-in-place beam through the shear connector to form a superposed beam body.
The precast beam steel bar structure comprises beam bottom longitudinal bars, first longitudinal bars and first independent stirrups, wherein the beam bottom longitudinal bars are arranged at the bottom of the precast beam at intervals, two ends of the beam bottom longitudinal bars extend to the outside of the precast beam and are bent and anchored, the first longitudinal bars are arranged at the top of the precast beam at intervals, and two ends of the first longitudinal bars extend to the outside of the precast beam; a plurality of first independent stirrups are arranged inside the precast beam at intervals along the length direction of the precast beam and are connected with the fixed beam bottom longitudinal bar and the first longitudinal bar.
The cast-in-place beam steel bar structure comprises second longitudinal bars and second independent stirrups, the second longitudinal bars are fixedly arranged in the cast-in-place beam through the second independent stirrups, and the second independent stirrups are arranged inside the cast-in-place beam at intervals along the length direction of the cast-in-place beam.
The plurality of shear connectors are arranged at intervals along the length direction of the superposed beam body.
The shear connector is a channel steel.
The groove bodies of the channel steel are arranged towards the direction of shear force applied to the cast-in-place beam, and the channel steel is symmetrically arranged about the center of the superposed beam body.
The shear connector is a cylindrical head welding nail.
The utility model can be prefabricated in factory and poured on site, can improve the processing precision, and adopts the mode of one-time installation on site to construct, thereby quickly forming a stressed whole and having simple construction; the utility model discloses both can regard as the bottom template of cast in situ concrete part, can avoid again that traditional superposed beams stirrup exposes, pushes up the muscle and wear the muscle complicated, pour quality defect such as not high, can improve prefabricated component's efficiency of construction greatly, are favorable to the propulsion and the development of assembly type structure.
Drawings
Fig. 1 is a cross-sectional view of the fabricated concrete composite beam of the present invention;
fig. 2 is a side view of the precast beam in the fabricated concrete composite beam of the present invention.
In the drawing, 1 precast beam, 2 cast-in-place beam, 3 shear connectors, 4 precast beam steel bar structures, 41 beam bottom longitudinal bars, 42 first longitudinal bars, 43 first independent stirrups and 5 cast-in-place beam steel bar structures.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1, an assembled concrete composite beam includes a precast beam 1, a shear connector 3, a precast beam steel bar structure 4 and a cast-in-place beam steel bar structure 5; the precast beam steel bar structure 4 is arranged in the precast beam 1, and the lower end of the shear connector 3 is arranged at the top of the precast beam 1; the cast-in-place beam steel bar structure 5 is arranged at the top of the precast beam 1, and concrete is poured to form a cast-in-place beam 2; the upper end of the shear connector 3 is poured in the cast-in-situ beam 2, and the precast beam 1 is connected with the cast-in-situ beam 2 through the shear connector 3 to form a superposed beam body.
Referring to fig. 1 and 2, the precast beam reinforcement structure 4 includes a beam bottom longitudinal rib 41, a first longitudinal rib 42, and a first independent stirrup 43, wherein a plurality of beam bottom longitudinal ribs 41 are arranged at the bottom of the precast beam 1 at intervals, two ends of the beam bottom longitudinal rib 41 extend to the outside of the precast beam 1 and are bent and anchored, a plurality of first longitudinal ribs 42 are arranged at the top of the precast beam 1 at intervals, and two ends of the first longitudinal rib 42 extend to the outside of the precast beam 1; the plurality of first independent stirrups 43 are arranged inside the precast beam 1 at intervals along the length direction of the precast beam 1 and are connected with the fixed beam bottom longitudinal bar 41 and the first longitudinal bar 42. The precast beam 1 and the precast beam steel bar structure 4 thereof can be precast and molded in a factory, and the bearing capacity required by mechanical calculation is achieved, and the processing is convenient. The beam bottom longitudinal rib 41 and the first longitudinal rib 42 not only need to meet the stress requirement in the construction stage, but also need to meet the stress requirement of the full-section beam in the normal use stage, so that the beam bottom longitudinal rib has the effects of bearing construction load and avoiding a beam bottom template.
The cast-in-place beam steel bar structure 5 comprises second longitudinal bars and second independent stirrups, the second longitudinal bars are fixedly arranged in the cast-in-place beam 2 through the second independent stirrups, and the second independent stirrups are arranged inside the cast-in-place beam 2 at intervals along the length direction of the cast-in-place beam 2.
Independent stirrup has been adopted to first independent stirrup 43 and the independent stirrup of second, can effectively avoid exposed easy book of stirrup to decrease the deformation, expose stirrup and coincide floor stirrup collision, the top muscle penetrates the inconvenient scheduling problem of construction in the prefabricated composite beam stirrup, first independent stirrup 43 and the independent stirrup of second dispose according to the structure atress needs can.
The plurality of shear connectors 3 are arranged at intervals along the length direction of the superposed beam body at certain intervals, so that the precast beam 1 and the cast-in-place beam 2 are stressed together, a horizontal shear resistance is provided, and slippage between the precast beam 1 and the cast-in-place beam 2 is avoided.
The shear connector 3 can adopt channel steel. Preferably, the groove body of the channel steel is arranged towards the direction of the shearing force applied to the cast-in-place beam 2, and the channel steels are symmetrically arranged about the center of the superposed beam body.
The shear connector 3 can adopt a cylindrical head welding nail. The shear connector 3 can also adopt other structures or combined connectors, so that the precast beam 1 and the cast-in-place beam 2 are connected into an integral structure and stressed together.
The utility model discloses a preparation and construction method specifically are:
s1: referring to fig. 2, a factory performs a precast concrete beam 1 based on the calculated amount of the concrete grade, the beam size, the bottom longitudinal reinforcement 41, the first longitudinal reinforcement 42, and the first independent stirrup 43 to be arranged. When prefabricating, need process channel-section steel or cylinder head welding nail or other forms's shear connector 3 simultaneously, place at precast beam 1 top according to certain setting rule.
S2: and after the precast beam 1 reaches the strength, transporting the precast beam to a project construction site for installation, and anchoring the beam bottom longitudinal ribs 41 into the two side column members. The precast beam 1 can be used as a bottom template on site, and the construction work of the template on site is avoided.
S3: referring to the attached drawing 1, after the precast beam 1 at the bottom is erected, a second independent hoop and a second longitudinal bar of a cast-in-place beam 2 at the upper part of the precast beam 1 are bound, and a shear connector 3 is arranged at the top of the precast beam 1 according to the design requirement.
S4: referring to the attached drawing 1, after the steel bars of the cast-in-place beam 2 are bound, the side templates of the cast-in-place beam 2 are erected, and then concrete can be cast in place; the cast-in-place beam 2 and the precast beam 1 are connected through the shear connector 3 to form a stressed whole.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides an assembled concrete composite beam, characterized by: the prefabricated beam comprises a prefabricated beam (1), a shear connector (3), a prefabricated beam steel bar structure (4) and a cast-in-place beam steel bar structure (5); the precast beam steel bar structure (4) is arranged in the precast beam (1), and the lower end of the shear connector (3) is arranged at the top of the precast beam (1); the cast-in-place beam steel bar structure (5) is arranged at the top of the precast beam (1), and concrete is poured to form the cast-in-place beam (2); the upper end of the shear connector (3) is poured in the cast-in-place beam (2), and the precast beam (1) is connected with the cast-in-place beam (2) through the shear connector (3) to form a superposed beam body.
2. The fabricated concrete composite beam according to claim 1, wherein: the precast beam steel bar structure (4) comprises beam bottom longitudinal bars (41), first longitudinal bars (42) and first independent stirrups (43), wherein the beam bottom longitudinal bars (41) are arranged at the bottom of the precast beam (1) at intervals, two ends of the beam bottom longitudinal bars (41) extend to the outside of the precast beam (1) and are bent and anchored, the first longitudinal bars (42) are arranged at the top of the precast beam (1) at intervals, and two ends of the first longitudinal bars (42) extend to the outside of the precast beam (1); the first independent stirrups (43) are arranged inside the precast beam (1) at intervals along the length direction of the precast beam (1) and are connected with the fixed beam bottom longitudinal rib (41) and the first longitudinal rib (42).
3. The fabricated concrete composite beam according to claim 1, wherein: the cast-in-place beam steel bar structure (5) comprises second longitudinal bars and second independent stirrups, the second longitudinal bars are fixedly arranged in the cast-in-place beam (2) through the second independent stirrups, and the second independent stirrups are arranged inside the cast-in-place beam (2) at intervals along the length direction of the cast-in-place beam (2).
4. The fabricated concrete composite beam according to claim 1, wherein: the shear connectors (3) are arranged at intervals along the length direction of the composite beam body.
5. The fabricated concrete composite beam according to claim 1 or 4, wherein: the shear connector (3) is a channel steel.
6. The fabricated concrete composite beam according to claim 5, wherein: the groove bodies of the channel steel are arranged towards the direction of the shearing force applied to the cast-in-place beam (2), and the channel steel is symmetrically arranged relative to the center of the superposed beam body.
7. The fabricated concrete composite beam according to claim 1 or 4, wherein: the shear connector (3) is a cylindrical head welding nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921107939.2U CN210395851U (en) | 2019-07-16 | 2019-07-16 | Assembled concrete superposed beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921107939.2U CN210395851U (en) | 2019-07-16 | 2019-07-16 | Assembled concrete superposed beam |
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| CN210395851U true CN210395851U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921107939.2U Active CN210395851U (en) | 2019-07-16 | 2019-07-16 | Assembled concrete superposed beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914546A (en) * | 2021-11-25 | 2022-01-11 | 广东工业大学 | Assembled type superposed beam plate structure and construction method thereof |
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- 2019-07-16 CN CN201921107939.2U patent/CN210395851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914546A (en) * | 2021-11-25 | 2022-01-11 | 广东工业大学 | Assembled type superposed beam plate structure and construction method thereof |
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