Beam-column rebar connection structure for prefabricated concrete building

Abstract

The present invention relates to a beam-column rebar connection structure for a prefabricated concrete building. The beam-column rebar connection structure comprises a precast column mold cavity, a precast beam mold cavity, and a precast slab mold cavity, wherein a precast column rebar framework and a precast beam rebar framework are respectively pre-mounted in the precast column mold cavity and the precast beam mold cavity; the precast column rebar framework comprises at least two column outer rebars and at least two column inner rebars; the precast beam rebar framework comprises at least two beam outer rebars and at least two beam inner rebars; the column outer rebars and the beam outer rebars are fabricated from the same first reinforcing bar, which is bent to form an upper section and a lower section, which are perpendicular to each other; the lower section is pre-mounted in the precast column rebar framework; and the upper section is pre-mounted in the precast beam rebar framework in the precast beam mold cavity. The connection strength between the precast column and the precast beam is increased, thereby enhancing the compressive resistance, seismic resistance, support stability and building safety.

Description

Beam-column steel bar connecting structure of prefabricated concrete building TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated buildings, in particular to a beam-column steel bar connecting structure of a prefabricated concrete building. BACKGROUND

[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 work, prefabricate building components in factories, are convenient to construct, and are fast to build, and are being popularized and applied.

[0003] The patent with publication number CN211228929U discloses a prefabricated beam-column steel bar joint, which comprises upper beam longitudinal reinforcement, lower beam longitudinal reinforcement and beam hoop reinforcement sleeved outside the upper beam longitudinal reinforcement and the lower beam longitudinal reinforcement. The upper beam longitudinal reinforcement and the lower beam longitudinal reinforcement both penetrate the node core area connected by the frame column node steel bars and the frame column node steel bars. The prefabricated beam-column steel bar joint structure disclosed by the device is relatively complex, the beam-column steel bars are made of different steel bars, the compression resistance and the seismic performance need to be improved, the amount of steel bars used is large, the cost is high, and the construction period is long. SUMMARY

[0004] The present application aims to provide a beam-column steel bar connecting structure of a prefabricated concrete building that improves the connecting strength, improves the compression resistance and seismic performance, and saves material costs.

[0005] The technical scheme adopted by the present application is as follows: a beam-column steel bar connecting structure of a prefabricated concrete building, comprising a prefabricated column mold cavity, a prefabricated beam mold cavity and a prefabricated floor mold cavity surrounded by a mold plate, a prefabricated column steel bar skeleton and a prefabricated beam steel bar skeleton are respectively pre-installed in the prefabricated column mold cavity and the prefabricated beam mold cavity, the prefabricated column steel bar skeleton comprises at least two column outer side steel bars and at least two column inner side steel bars, the prefabricated beam steel bar skeleton 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 steel bars are made of the same first reinforcing steel bar, the lower section of the first reinforcing steel bar is pre-installed in the prefabricated column steel bar skeleton 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 skeleton in the prefabricated beam mold cavity.

[0006] Further, the connecting position of the upper section and the lower section of the first reinforcing steel bar is bent into a circular arc.

[0007] Further, the end of the upper section of the first reinforcing steel bar in the prefabricated column mold cavity at the same end of the prefabricated beam corresponds to a stacking section or a parallel and contacting section.

[0008] Further, the upper half-arc bending of the two column inner side steels anchors into the beam-column connection node to form a second reinforcing steel, and the second reinforcing steel contacts the first reinforcing steel.

[0009] Further, the upper half-arc bending of the two column inner side steels anchors into the beam-column connection node to form a second reinforcing steel, and the second reinforcing steel contacts the first reinforcing steel.

[0010] Further, the precast column steel skeleton includes a plurality of transverse stirrups, the precast beam steel skeleton includes a plurality of longitudinal stirrups, and the upper segment and the lower segment of the first reinforcing steel are respectively connected by wire binding or welded connection with the transverse stirrups and the longitudinal stirrups.

[0011] Further, a pre-pouring belt is arranged at the upper part of the beam-column connection node, and the pre-pouring belt and the corresponding column position reserved groove are pre-embedded with foam bricks or foaming glue.

[0012] The beneficial technical effects of the present application are as follows:

[0013] The present application sets the first reinforcing steel, the second reinforcing steel and the third reinforcing steel, further improves the connection strength of the precast column and the precast beam, improves the compression performance, and after the concrete pouring, the precast house unit module is not easy to crack under the heavy pressure of the beam-column node, improves the anti-seismic performance and the support stability, further improves the safety performance of the house. The connection structure is simple, convenient for construction, reduces the steel consumption, and saves the cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic diagram of the present application;

[0015] Fig. 2 is a top view structural schematic diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0016] The present application will be described in detail below with reference to the drawings.

[0017] Embodiment one: as shown in Figs. 1-2, a beam-column steel connecting structure of a concrete precast assembly building of the present application, comprising a precast column mold cavity 1, a precast beam mold cavity 2 and a precast floor mold cavity surrounded by a formwork, a precast column steel skeleton and a precast beam steel skeleton are respectively pre-installed in the precast column mold cavity 1 and the precast beam mold cavity 2, the precast column steel skeleton includes at least two column outer side steels and at least two column inner side steels, the precast beam steel skeleton includes at least two beam outer side steels and at least two beam inner side steels, the column outer side steel and the beam outer side steel are made of the same first reinforcing steel 11 which is bent to form a vertical upper segment and a lower segment, the lower segment of the first reinforcing steel 11 is pre-installed in the precast column steel skeleton in the precast column mold cavity 1, and the upper segment of the first reinforcing steel 11 is pre-installed in the precast beam steel skeleton in the precast beam mold cavity 2.

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

[0019] In the embodiment, the end of the upper section of the first reinforcing steel bar 11 in the two end precast column mold cavities 1 corresponding to the same precast beam is provided with a superimposed section or a parallel and contacting section.

[0020] In the embodiment, the upper half-arc of the two column inner side steel bars is bent back into the beam-column connecting node to form the second reinforcing steel bar 12, and the second reinforcing steel bar 12 is in contact with the first reinforcing steel bar 11.

[0021] In the embodiment, the upper half-arc of the two beam inner side steel bars is bent upwards into the beam-column connecting node to form the 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 the embodiment, the precast column steel bar skeleton includes a plurality of transverse stirrups 13, the precast beam steel bar skeleton includes a plurality of longitudinal stirrups 21, and the upper section and the lower section of the first reinforcing steel bar 11 are respectively connected by wire binding or welded connection with the transverse stirrups 13 and the longitudinal stirrups 21.

[0023] In the embodiment, a pre-pouring strip 3 is provided at the upper part of the beam-column connecting node, and a reserved groove is pre-buried in the pre-pouring strip 3 with a foam brick or foaming glue 4.

[0024] In the embodiment, the first reinforcing steel bar 11, the second reinforcing steel bar 12, the third reinforcing steel bar 14, the transverse stirrup 13 and the longitudinal stirrup 21 are first bent by tools in the factory, the steel bar skeleton is bound, and then the beam-column mold cavity is combined, the foam brick or foaming glue 4 is placed in the pre-pouring strip 3 and the reserved groove, and then the concrete is poured, so that the connecting strength of the precast column and the precast beam is effectively improved after the formwork is removed, and the compression resistance, the earthquake resistance, the support stability and the safety performance of the house are further improved.

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

Claims

1. A beam-column steel bar connecting structure of a concrete prefabricated assembly building, comprising a prefabricated column mold cavity (1), a prefabricated beam mold cavity (2) and a prefabricated floor mold cavity surrounded by a formwork, a prefabricated column steel bar batten and a prefabricated beam steel bar batten are respectively pre-installed in the prefabricated column mold cavity (1) and the prefabricated beam mold cavity (2), the prefabricated column steel bar batten comprises at least two column outer side steels and at least two column inner side steels, and the prefabricated beam steel bar batten comprises at least two beam outer side steels and at least two beam inner side steels, characterized in that: The column outer side steel bars and the beam outer side steel bars are made of the same first reinforcing steel bars (11) which are bent to form upper and lower segments perpendicular to each other, the lower segments of the first reinforcing steel bars (11) are pre-installed in the precast column steel reinforcement bars in the precast column mold cavity (1), and the upper segments of the first reinforcing steel bars (11) are pre-installed in the precast beam steel reinforcement bars in the precast beam mold cavity (2). ​ 2. The beam-column steel bar connecting structure of the prefabricated concrete building according to claim 1, characterized in that: The connecting positions of the upper and lower segments of the first reinforcing steel bars (11) are bent into arcs.

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

4. The beam-column steel bar connecting structure of a prefabricated concrete building according to claim 1, characterized in that: The upper half-arc-shaped bends of the two column inner side steel bars are anchored into the beam-column connecting joint to form second reinforcing steel bars (12), and the second reinforcing steel bars (12) are in contact with the first reinforcing steel bars (11).

5. The beam-column reinforcement connection structure of a prefabricated concrete building according to claim 1, characterized in that: The upper half-arc-shaped bends of the two beam inner side steel bars are upwardly anchored into the beam-column connecting joint to form third reinforcing steel bars (14), and the third reinforcing steel bars (14) are in contact with the lower segments of the first reinforcing steel bars (11).

6. The beam-column reinforcement connection structure of a prefabricated concrete building of claim 1, wherein: The precast column steel reinforcement bars include a plurality of transverse stirrups (13), the precast beam steel reinforcement bars include a plurality of longitudinal stirrups (21), and the upper and lower segments of the first reinforcing steel bars (11) are respectively connected with the transverse stirrups (13) and the longitudinal stirrups (21) by wire binding or welding.

7. The beam-column reinforcement connection structure of a prefabricated concrete building of claim 1, wherein: A pre-pouring strip (3) is arranged at the upper part of the beam-column connecting joint, and the pre-pouring strip (3) and the corresponding column position reserved groove are pre-buried with foam bricks or foaming glue (4).

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