CN220117593U - Prefabricated crossbeam - Google Patents

Abstract

The utility model relates to the field of building materials, in particular to a prefabricated beam, which comprises a concrete body and a steel reinforcement framework; the upper surface of the concrete body is provided with a U-shaped grouting groove with an upward opening, and a plurality of concrete filling grooves are formed in the inner side wall of the U-shaped grouting groove at intervals; the steel bar framework comprises a plurality of U-shaped steel bars which are embedded in the concrete body and are arranged side by side, and straight steel bars which are connected with the U-shaped steel bars; the two ends of each U-shaped steel bar penetrate through the upper surface of the concrete body and extend to the outside of the concrete body, and the part of each U-shaped steel bar extending to the outside of the concrete body is reserved connection bars. The precast beam has a simple structure, and the upper surface of the concrete body is hollowed to form a U-shaped grouting groove, so that the whole quality is reduced, and the precast beam is convenient to transport. When the prefabricated beam is used in construction, the prefabricated beam is installed on the floor slab, and concrete is poured into the U-shaped grouting grooves of the prefabricated beam and the floor slab to form the prefabricated beam, so that the prefabricated beam is convenient to install, time-saving and labor-saving, and low in construction cost.

Description

Prefabricated crossbeam

Technical Field

The utility model relates to the field of building materials, in particular to a prefabricated beam.

Background

The beams support the weight of the components and roofs in the building upper frame, which can increase the integrity and rigidity of the building, and are an important part of the building upper frame.

When building residents, the beams are manufactured in a mode of pouring reinforced steel bars and concrete on site, the cast-in-situ beams are multiple in working procedures and long in construction period during manufacturing, a large amount of formwork supporting and template materials are needed to be input, and the labor time comprehensive cost is high. At present, chinese patent publication No. CN112065040a discloses a crossbeam pouring template for construction, including frame and bottom plate, the inboard of frame is provided with the bottom plate in being located rear position department, rear end four corners position department of bottom plate is provided with unable adjustment base, unable adjustment base plays the fixed effect through circular base, circular base's upper end is provided with the fixed column, and both ends are provided with semicircular spring buckle about the fixed column, when installing circular base, insert the fixed column fixed round hole's inside position department at first for semicircular spring buckle fixes circular base and bottom plate together in semicircular groove inside position department, only need to outside pulling circular base when dismantling, makes semicircular spring buckle break away from semicircular groove, then just can make the fixed column break away from fixed round hole at the gentle effort, just so make circular base dismantled, if take place to damage and change very well.

The beam pouring template for building construction solves the problem that a large number of support die frames are needed in the beam pouring process, but the problems of complex construction procedures and high construction cost still exist in the actual use process.

Disclosure of Invention

Accordingly, in view of the above-mentioned problems, the present utility model proposes a prefabricated cross beam. The prefabricated beam can be prefabricated in a factory, is lighter in weight and convenient to construct and install, and solves the problems of complex working procedures, long construction period and high comprehensive cost of manpower time of the beam cast in situ.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a prefabricated beam comprises a concrete body and a steel reinforcement framework;

the upper surface of the concrete body is provided with a U-shaped grouting groove with an upward opening, and a plurality of concrete filling grooves are formed in the inner side wall of the U-shaped grouting groove at intervals;

the steel bar framework comprises a plurality of U-shaped steel bars which are embedded in the concrete body and are arranged side by side, and straight steel bars which are connected with the U-shaped steel bars;

the two ends of each U-shaped steel bar penetrate through the upper surface of the concrete body and extend to the outside of the concrete body, and the part of each U-shaped steel bar extending to the outside of the concrete body is reserved connection bars.

Further, one end of the reserved connecting rib extending to the outside of the concrete body is bent to form a hook.

By adopting the technical scheme, the utility model has the beneficial effects that:

the prefabricated beam can be produced in a factory in advance according to the specification of the required beam, and the upper surface of the concrete body is hollowed to form a U-shaped grouting groove, so that the overall quality is reduced, and the transportation is convenient. A plurality of concrete embedded grooves are formed in the inner side wall of the U-shaped grouting groove at intervals, so that concrete is embedded in the concrete embedded grooves when concrete is poured, and the concrete cannot fall off from the U-shaped grouting groove after hardening. The hook formed by bending one end of the reserved connecting rib of the steel reinforcement framework is convenient for equipment hoisting.

When the prefabricated beam is used in construction, the prefabricated beam is installed on the floor slab, and concrete is poured into the U-shaped grouting grooves of the prefabricated beam and the floor slab to form the prefabricated beam, so that the prefabricated beam is convenient to install, time-saving and labor-saving, and low in construction cost.

Drawings

Fig. 1 is a cross-sectional view of the present precast beam.

Fig. 2 is a schematic diagram of the reinforcement cage structure of the prefabricated beam.

Detailed Description

The utility model will now be further described with reference to the drawings and detailed description.

Referring to fig. 1 and 2, the present embodiment provides a prefabricated beam, which includes a reinforcement cage 2 and a concrete body 1 poured outside the reinforcement cage 2. The concrete body 1 is a structure formed by pouring concrete on the steel reinforcement framework 2 and hardening.

The upper surface of the concrete body 1 is provided with a U-shaped grouting groove 3 with an upward opening, and a plurality of concrete filling grooves 31 are formed in the inner side wall of the U-shaped grouting groove 3 at intervals. The U-shaped grouting groove 3 is formed by hollowing the concrete body 1, so that the whole mass of the precast beam is reduced, and the precast beam is convenient to transport.

As shown in fig. 2, the reinforcement cage 2 includes a plurality of U-shaped reinforcement bars 21 buried in the concrete body 1 and straight reinforcement bars 20 connected to each of the U-shaped reinforcement bars 21 (the number of the U-shaped reinforcement bars 21 and the straight reinforcement bars 20 is set according to actual installation requirements). As shown in fig. 1, two ends of the U-shaped steel bars 21 extend to the outside of the concrete body 1 through the upper surface of the concrete body 1, the portion of each U-shaped steel bar 21 extending to the outside of the concrete body 1 is a reserved connecting bar 22, one end of the reserved connecting bar 22 is bent to form a hook 221, and the hook 221 is convenient for hoisting the precast beam.

In actual construction and use, the precast beam is installed on a floor slab (not shown in the figure, but the real-time mode of installing the precast beam on the floor slab is obvious to a person skilled in the art), meanwhile, concrete is poured into the U-shaped grouting grooves 3 of the precast beam and the floor slab to form, the concrete is embedded in the concrete embedded grooves 31 (on the inner side walls of the U-shaped grouting grooves 3), and the concrete cannot fall off from the U-shaped grouting grooves 3 after hardening, so that the precast beam is convenient to install, time-saving and labor-saving, low in construction cost and practical.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (2)

1. A prefabricated beam, characterized by: comprises a concrete body and a steel bar framework;

the upper surface of the concrete body is provided with a U-shaped grouting groove with an upward opening, and a plurality of concrete filling grooves are formed in the inner side wall of the U-shaped grouting groove at intervals;

the steel bar framework comprises a plurality of U-shaped steel bars which are embedded in the concrete body and are arranged side by side, and straight steel bars which are connected with the U-shaped steel bars;

the two ends of each U-shaped steel bar penetrate through the upper surface of the concrete body and extend to the outside of the concrete body, and the part of each U-shaped steel bar extending to the outside of the concrete body is reserved connection bars.

2. A precast beam as defined in claim 1, wherein: and one end of the reserved connecting rib extending to the outside of the concrete body is bent to form a hook.