CN212153904U

CN212153904U - Precast reinforced concrete beam structure

Info

Publication number: CN212153904U
Application number: CN202020545886.9U
Authority: CN
Inventors: 蔡家润; 韩冬; 张跃红; 郭卫波; 杨国栋; 郭传林
Original assignee: SIPPR Engineering Group Co Ltd
Current assignee: SIPPR Engineering Group Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-12-15
Anticipated expiration: 2030-04-14

Abstract

The utility model discloses a precast reinforced concrete beam structure, which comprises a precast beam body formed by a reinforcement cage and concrete pouring, wherein each connecting end part of the precast beam body is provided with a mounting groove for placing stressed steel bars, the mounting groove extends along the length direction of the precast beam body, and a connecting sleeve extending along the length direction of the precast beam body is pre-embedded in the groove wall of the mounting groove; and the stirrups of the reinforcement cage extend upwards to the top of the precast beam body. The utility model has the advantages of the structure is ingenious, and every connection terminal surface of the precast beam body all can not go out the muscle and reserve large-span hollow core slab installation space, not only can effectively avoid the reinforcing bar collision during the construction, can also directly shelve the precast floor slab on the precast beam body, has reduced the construction degree of difficulty, has improved the efficiency of construction under the prerequisite of guaranteeing construction quality.

Description

Precast reinforced concrete beam structure

Technical Field

The utility model relates to an assembled concrete structure especially relates to a precast reinforced concrete beam structure.

Background

With the adjustment of national industrial structures and the advocation of green energy-saving building concepts in the building industry, the fabricated buildings are concerned more and more, for example, the national institute of affairs ' guide opinions about the rapid development of the fabricated buildings ', the action scheme of the ' thirteen-five ' fabricated buildings ' issued by the ministry of housing construction, the ' city management method for demonstrating the fabricated buildings ' and the ' base management method for the fabricated building industry ' require that the fabricated buildings account for more than 30% of the proportion of newly built buildings nationwide in 2025 years. However, the national regulations require that the performance of the assembled integral concrete structure is equal to that of the traditional cast-in-place concrete structure, and the precast beam and the precast floor slab are members with ribs at the end parts, so that the collision of the steel bars during construction is avoided by considering the avoidance of the steel bars during design, the requirements on designers are high, the design workload is high, the production efficiency of the members is low, the utilization rate of templates is low, the production cost of the precast members is high, the construction difficulty is high, and the construction efficiency is reduced.

Disclosure of Invention

An object of the utility model is to provide a link does not go out the muscle link and does not go out the muscle and reserve the precast reinforced concrete beam structure in large-span hollow core slab installation space, can effectively avoid the reinforcing bar collision during the construction, has reduced the construction degree of difficulty, has improved the efficiency of construction.

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

the precast reinforced concrete beam structure comprises a precast beam body formed by pouring a reinforcement cage and concrete, wherein each connecting end part of the precast beam body is provided with a mounting groove for placing stressed steel bars, the mounting groove extends along the length direction of the precast beam body, and a connecting sleeve extending along the length direction of the precast beam body is pre-embedded in the groove wall of the mounting groove; and the stirrups of the reinforcement cage extend upwards to the top of the precast beam body.

The mounting groove is a U-shaped groove with an upward opening, so that the stressed steel bar can be conveniently mounted.

The cross section of the precast beam body is of a rectangular structure or a T-shaped structure with a pair of cantilever lugs.

The utility model has the advantages of the structure is ingenious, and every connection terminal surface of the precast beam body does not go out the muscle and reserves large-span hollow core slab installation space, effectively avoids the reinforcing bar collision during the construction, has reduced the construction degree of difficulty, has improved the efficiency of construction under the prerequisite of guaranteeing construction quality. Specifically, when the precast beam body is connected with the floor slab, the large-span precast hollow slab can be directly placed on the precast beam body due to the reserved installation space of the large-span precast hollow slab, so that construction is facilitated; when the precast beam body is installed with the precast column, because the connecting end face of the precast beam body does not have ribs, the precast beam body steel bars are not required to be prevented from colliding with the precast column steel bars, the stressed steel bars can be directly placed in the mounting grooves in the two precast beam bodies, then one torque steel bar is installed in each connecting sleeve, the two precast beam bodies can be connected with the precast column, the construction is simple, the labor can be reduced, the construction quality is guaranteed, and the construction efficiency is also improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a direction a of fig. 1.

Fig. 3 is an enlarged structure view along the direction B-B in fig. 1.

Fig. 4 is an enlarged structure view in the direction of C-C in fig. 1.

Fig. 5 is a diagram of a connection node of the precast beam body and the precast concrete column of fig. 1.

Fig. 6 is a diagram of a connection node of the precast girder body and the large-span slab of fig. 1.

Fig. 7 is another schematic structural diagram of the precast beam body according to the present invention.

Fig. 8 is a view from a' of fig. 7.

Fig. 9 is a diagram of a connection node of the precast beam body and the precast concrete column of fig. 7.

Fig. 10 is a diagram of the precast girder body and the connection node with the large-span slab of fig. 7.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.

Implementation mode one

As shown in fig. 1-4, the precast reinforced concrete beam structure of the present invention includes a precast beam body 1 (the end surface and the cross section of the precast beam body 1 are rectangular structures as shown in fig. 2-3) formed by pouring a reinforcement cage and concrete, each connecting end of the precast beam body 1 is provided with a mounting groove 3 for placing a stressed steel bar 2, the mounting groove 3 extends along the length direction of the precast beam body 1 from the connecting end surface of the precast beam body 1, and a connecting sleeve 4 extending along the length direction of the precast beam body 1 is pre-embedded in the groove wall of the mounting groove 3; and the stirrups 5 of the reinforcement cage extend upwards to the top of the precast beam body 1.

As shown in fig. 2, the mounting groove 3 is a U-shaped groove with an upward opening, so that the stressed steel bar 2 can be conveniently placed.

When precast reinforced concrete beam structure and precast concrete post 6 be connected the time: the precast concrete column 6 is hoisted in place, then the two precast beam bodies 1 are hoisted on the precast concrete column 6, bottom stressed steel bars 2 are arranged in the installation grooves 3 of the two precast beam bodies 1, and the stressed steel bars 2 penetrate through the beam column node area, so that indirect lap joint force transmission of the two precast beam bodies 1 is realized, and the construction difficulty is reduced; a torque steel bar 7 is installed in each connecting sleeve 4, the torque steel bars 7 are connected with a frame 8 located between the two precast beam bodies 1, stirrups 5 extending out of the tops of the precast beam bodies 1 are connected with negative bars 9 of frame beam supports, and the connection construction of the precast beam bodies 1 and the precast concrete columns 6 can be realized by pouring gaps between the U-shaped grooves and the two precast beam bodies 1 on site, so that the construction difficulty is reduced, and the concrete column is particularly shown in fig. 5.

When precast reinforced concrete beam structure and large-span board (precast floor slab promptly) be connected: because the precast beam body 1 is reserved with a large-span precast hollow slab installation space, the large-span precast hollow slab 10 can be placed by reserving certain spaces at two sides of the precast beam body 1 during construction, and the specific connection node is shown in fig. 6.

Second embodiment

The precast reinforced concrete beam structure according to the present embodiment is different from the first embodiment only in the sectional structure of the precast beam body 1. As shown in fig. 7 to 8, the precast beam body 1 according to the present embodiment has a T-shaped cross section with a projecting lug 11.

When the precast reinforced concrete beam structure of the utility model is connected with the precast concrete column 6, the precast concrete column 6 is hoisted in place, then the two precast beam bodies 1 are hoisted on the precast concrete column 6, the bottom stress steel bar 2 is arranged in the mounting groove 3 of the two precast beam bodies 1, and the stress steel bar 2 is communicated with and passes through the beam column node area; a torque steel bar 7 is installed in each connecting sleeve 4, the torque steel bars 7 are connected with a frame 8 located between the two precast beam bodies 1, stirrups 5 extending out of the tops of the precast beam bodies 1 are connected with negative bars 9 of frame beam supports, and the connection construction of the precast beam bodies 1 and the precast concrete columns 6 can be realized by pouring a U-shaped groove and gaps between the two precast beam bodies 1 on site, as shown in fig. 9.

When precast reinforced concrete beam structure and large-span board (precast floor slab promptly) be connected: because the precast beam body 1 is reserved with a large-span precast hollow slab installation space, the large-span precast hollow slab 10 can be placed by reserving certain spaces at two sides of the precast beam body 1 during construction, and the specific connection node is shown in fig. 10.

In the description of the present invention, it should be noted that the terms "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a precast reinforced concrete beam structure, includes the precast beam body that forms by steel reinforcement cage and concrete placement, its characterized in that: each connecting end part of the precast beam body is provided with a mounting groove for placing stressed steel bars, the mounting groove extends along the length direction of the precast beam body, and a connecting sleeve extending along the length direction of the precast beam body is pre-embedded in the groove wall of the mounting groove; and the stirrups of the reinforcement cage extend upwards to the top of the precast beam body.

2. A precast reinforced concrete beam structure according to claim 1, wherein: the mounting groove is a U-shaped groove with an upward opening.

3. A precast reinforced concrete beam structure according to claim 1, wherein: the cross section of the precast beam body is of a rectangular structure or a T-shaped structure with a pair of cantilever lugs.