Beam column steel bar connecting structure of concrete prefabricated assembly type building

Abstract

The utility model relates to a beam column reinforcing steel bar connecting structure of a concrete prefabricated assembly type building, which comprises a prefabricated column die cavity, a prefabricated beam die cavity and a prefabricated floor die cavity, and a prefabricated column reinforcing steel bar keel and a prefabricated beam reinforcing steel bar keel are pre-mounted in the prefabricated column die cavity and the prefabricated beam die cavity respectively. The prefabricated column steel bar keel comprises at least two column outer side steel bars and at least two column inner side steel bars, the prefabricated beam steel bar keel comprises at least two beam outer side surface bars and at least two beam inner side steel bars, and the column outer side steel bars and the beam outer side surface steel bars are manufactured by bending the same first reinforcing steel bar to form an upper section and a lower section which are perpendicular to each other. The lower section is pre-installed in a prefabricated column steel bar keel, and the upper section is pre-installed in a prefabricated beam steel bar keel in a prefabricated beam mold cavity. The connecting strength of the prefabricated column and the prefabricated beam is improved, and the pressure resistance, the shock resistance, the supporting stability and the house safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, in particular to a beam-column steel bar connection structure of a concrete prefabricated prefabricated building. Background Art

[0002] With the development of science and technology, prefabricated buildings play an important role in green buildings. Compared with traditional cast-in-place concrete buildings, prefabricated buildings reduce a large amount of on-site operations, prefabricate various building components in factories, are easy to construct, and have a fast construction speed. They are being promoted and applied.

[0003] The patent with announcement number CN211228929U discloses an assembled beam-column steel bar node, which includes upper beam longitudinal bars, lower beam longitudinal bars and beam stirrups sleeved outside the upper beam longitudinal bars and the lower beam longitudinal bars. The upper beam longitudinal bars and the lower beam longitudinal bars both pass through the node core area where the frame column node steel bars and the frame column node steel bars are connected. The assembled beam-column steel bar node structure proposed by the device is relatively complex. The beam-column steel bars are made of different steel bars, and the compressive and seismic performance needs to be improved. In addition, the amount of steel bars used is large, the cost is high, and the construction period is long. Utility Model Content

[0004] The purpose of the utility model is to provide a beam-column steel bar connection structure for a prefabricated concrete building, which improves connection strength, improves compression and seismic resistance, and saves material costs in response to the above-mentioned problems and shortcomings.

[0005] The technical solution adopted by the utility model is: a beam-column steel bar connection structure of a concrete prefabricated assembled building, comprising a prefabricated column mold cavity, a prefabricated beam mold cavity and a prefabricated floor mold cavity surrounded by a mold plate, the prefabricated column mold cavity and the prefabricated beam mold cavity are respectively pre-installed with a prefabricated column steel bar keel and a prefabricated beam steel bar keel, the prefabricated column steel bar keel comprises at least two column outer side steel bars and at least two column inner side steel bars, the prefabricated beam steel bar keel comprises at least two beam outer side reinforcements and at least two beam inner side reinforcements, the column outer side reinforcements and the beam outer side reinforcements are made by bending the same first reinforcing steel bar to form a vertical upper section and a lower section, the lower section of the first reinforcing steel bar is pre-installed in the prefabricated column steel bar keel in the prefabricated column mold cavity, and the upper section of the first reinforcing steel bar is pre-installed in the prefabricated beam steel bar keel in the prefabricated beam mold cavity.

[0006] Furthermore, the connection position between the upper section and the lower section of the first reinforcing steel bar is bent into an arc.

[0007] Furthermore, the ends of the upper sections of the first reinforcing steel bars in the prefabricated column mold cavities at both ends corresponding to the same beam are provided with overlapping sections or parallel and contacting sections.

[0008] Furthermore, the upper semi-arc-shaped inner steel bars of the two columns are bent back and anchored into the beam-column connection node to form a second reinforcing steel bar, and the second reinforcing steel bar is in contact with the first reinforcing steel bar.

[0009] Furthermore, the upper semi-arc-shaped inner steel bars of the two beams are bent upward and anchored into the beam-column connection node to form a third reinforcing steel bar, and the third reinforcing steel bar is in contact with the lower section of the first reinforcing steel bar.

[0010] Furthermore, the prefabricated column steel keel includes a plurality of transverse stirrups, the prefabricated beam steel keel includes a plurality of longitudinal stirrups, and the upper and lower sections of the first reinforcing steel bars are respectively connected to the transverse stirrups and the longitudinal stirrups by binding or welding.

[0011] Furthermore, a precast strip is provided at the upper part of the beam-column joint, and foam bricks or foam glue are pre-embedded in the precast strip and the corresponding reserved groove for the column position.

[0012] Beneficial technical effects of the utility model:

[0013] The utility model is provided with the first reinforcing steel bar, the second reinforcing steel bar and the third reinforcing steel bar, which further improves the connection strength between the prefabricated column and the prefabricated beam, improves the compression resistance, and after the concrete is poured, the beam-column joint of the prefabricated house unit module is not easy to crack under heavy pressure, improves the earthquake resistance and support stability, and further improves the safety performance of the house. The connection structure is simple, the construction is convenient, the steel cost is reduced, and the cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the top structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The utility model is described in detail below in conjunction with the accompanying drawings.

[0017] Embodiment 1: Figure 1-2As shown, the utility model is a beam-column steel bar connection structure of a concrete prefabricated assembled building, comprising a prefabricated column mold cavity 1, a prefabricated beam mold cavity 2 and a prefabricated floor mold cavity surrounded by a mold plate, the prefabricated column mold cavity 1 and the prefabricated beam mold cavity 2 are respectively pre-installed with a prefabricated column steel bar keel and a prefabricated beam steel bar keel, the prefabricated column steel bar keel comprises at least two column outer side steel bars and at least two column inner side steel bars, the prefabricated beam steel bar keel comprises at least two beam outer side steel bars and at least two beam inner side steel bars, the column outer side steel bars and the beam outer side side steel bars are made by bending the same first reinforcing steel bar 11 to form a vertical upper section and a lower section, the lower section of the first reinforcing steel bar 11 is pre-installed in the prefabricated column steel bar keel in the prefabricated column mold cavity 1, and the upper section of the first reinforcing steel bar 11 is pre-installed in the prefabricated beam steel bar keel in the prefabricated beam mold cavity 2.

[0018] In this embodiment, the connection position between the upper section and the lower section of the first reinforcing steel bar 11 is bent into an arc.

[0019] In this embodiment, the upper ends of the first reinforcing steel bars 11 in the prefabricated column mold cavities 1 at both ends corresponding to the same beam are provided with overlapping sections or parallel and contacting sections.

[0020] In this embodiment, the upper semi-arc-shaped inner steel bars of the two columns are bent back and anchored into the beam-column connection node to form a second reinforcing steel bar 12 , and the second reinforcing steel bar 12 is in contact with the first reinforcing steel bar 11 .

[0021] In this embodiment, the upper semi-arc-shaped inner steel bars of the two beams are bent upward and anchored into the beam-column connection node to form a third reinforcing steel bar 14 , and the third reinforcing steel bar 14 is in contact with the lower section of the first reinforcing steel bar 11 .

[0022] In this embodiment, the prefabricated column steel keel includes a plurality of transverse stirrups 13, and the prefabricated beam steel keel includes a plurality of longitudinal stirrups 21. The upper and lower sections of the first reinforcing steel bar 11 are respectively connected to the transverse stirrups 13 and the longitudinal stirrups 21 by wire binding or welding.

[0023] In this embodiment, a precast strip 3 is provided on the upper part of the beam-column joint, and a foam brick or foam glue 4 for a reserved groove is pre-buried in the precast strip 3 corresponding to the column position.

[0024] In this embodiment, the first reinforcing steel bar 11, the second reinforcing steel bar 12, the third reinforcing steel bar 14, the transverse stirrups 13, and the longitudinal stirrups 21 are first bent in the factory using tools, and the steel keel is bundled. Then, combined with the beam-column mold cavity, foam bricks or foam glue 4 are placed in the precast strip 3 and the reserved groove, and then concrete is poured. After the mold is removed, the connection strength between the precast column and the precast beam is effectively improved, and the compressive resistance, earthquake resistance, support stability and safety performance of the house are further improved.

[0025] The above embodiment is only one implementation of the utility model, but does not constitute a limitation. Any simple modification, change, substitution, combination or simplification made without departing from the spirit of the utility model is equivalent to an equivalent replacement method and should be within the protection scope of the utility model.

Claims

1. A beam-column steel bar connection structure of a prefabricated concrete building, comprising a prefabricated column mold cavity (1), a prefabricated beam mold cavity (2) and a prefabricated floor mold cavity surrounded by a mold plate, wherein a prefabricated column steel bar keel and a prefabricated beam steel bar keel are pre-installed in the prefabricated column mold cavity (1) and the prefabricated beam mold cavity (2), respectively, wherein the prefabricated column steel bar keel comprises at least two column outer side steel bars and at least two column inner side steel bars, and the prefabricated beam steel bar keel comprises at least two beam outer side side steel bars and at least two beam inner side steel bars, characterized in that: The steel bars on the outer side of the column and the steel bars on the outer side of the beam are made by bending the same first reinforcing steel bar (11) to form upper and lower sections that are perpendicular to each other; the lower section of the first reinforcing steel bar (11) is pre-installed in a prefabricated column steel bar keel in a prefabricated column mold cavity (1); and the upper section of the first reinforcing steel bar (11) is pre-installed in a prefabricated beam steel bar keel in a prefabricated beam mold cavity (2).

2. The beam-column steel bar connection structure of a prefabricated concrete building according to claim 1, characterized in that: The connection position between the upper section and the lower section of the first reinforcing steel bar (11) is bent into an arc.

3. The beam-column steel bar connection structure of a prefabricated concrete building according to claim 1, characterized in that: The upper ends of the first reinforcing steel bars (11) in the prefabricated column mold cavities (1) at both ends corresponding to the same prefabricated beam are provided with overlapping sections or parallel and contacting sections.

4. The beam-column steel bar connection structure of a prefabricated concrete building according to claim 1, characterized in that: The upper semi-arc-shaped portions of the inner steel bars of the two columns are bent back and anchored into the beam-column connection node to form a second reinforcing steel bar (12), and the second reinforcing steel bar (12) is in contact with the first reinforcing steel bar (11).

5. The beam-column steel bar connection structure of a prefabricated concrete building according to claim 1, characterized in that: The upper semi-arc-shaped inner steel bars of the two beams are bent upward and anchored into the beam-column connection node to form a third reinforcing steel bar (14), and the third reinforcing steel bar (14) is in contact with the lower section of the first reinforcing steel bar (11).

6. The beam-column steel bar connection structure of a prefabricated concrete building according to claim 1, characterized in that: The prefabricated column steel keel comprises a plurality of transverse stirrups (13), the prefabricated beam steel keel comprises a plurality of longitudinal stirrups (21), and the upper section and the lower section of the first reinforcing steel bar (11) are respectively connected to the transverse stirrups (13) and the longitudinal stirrups (21) by wire binding or welding.

7. The beam-column steel bar connection structure of a prefabricated concrete building according to claim 1, characterized in that: A precast strip (3) is provided at the upper part of the beam-column connection node, and foam bricks or foam glue (4) are pre-embedded in the precast strip (3) and the corresponding column position reserved groove.

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