Fabricated concrete beam-column joint connecting structure

Abstract

The utility model discloses an assembly type concrete beam-column joint connecting structure, which relates to the technical field of assembly type beam-column joints, and comprises a prefabricated column and a prefabricated beam, a connecting piece is pre-buried in the prefabricated column, the connecting piece comprises mutually symmetrical connecting plates, twisted steel bars are welded between the connecting plates at equal intervals in an array manner, and the twisted steel bars are connected with the prefabricated beam. The left side and the right side of the connecting plate are fixedly provided with symmetrical limiting plates, the sections of the limiting plates are in an L shape, the bottoms of the limiting plates are fixedly provided with supporting plates, the supporting plates are connected with the connecting plate, and one end of the precast beam is fixedly provided with an installing piece which comprises an installing plate, and the installing plate is installed between the limiting plates and the connecting plate. According to the utility model, the limiting plate is matched with the connecting plate and the mounting plate, so that the mounting plate can be prevented from moving within a certain range, the possibility of relative displacement between the precast beam and the precast column is further reduced, the risk of overall stability reduction caused by overlarge relative displacement of the structure is reduced, and local or overall instability damage of the structure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of assembly type beam column joint, specifically to an assembly type concrete beam column joint connecting structure. BACKGROUND

[0002] The cast-in-situ concrete technology has the shortcomings of low production efficiency, serious environmental pollution and great economic waste, and does not conform to the development trend of low carbon and environmental protection; the prefabricated assembly type concrete building technology has become one of the main development directions of new technology development in the field of house building, and has incomparable advantages compared with traditional buildings.

[0003] The Chinese utility model patent with patent application number 202420036062.7 provides an assembly type reinforced concrete beam column joint connecting structure, the beam head end plate of the beam head steel member and the connecting end plate of the column center steel member are aligned after the prefabricated beam and the prefabricated column are completed in the factory, the column center steel member and the beam head steel member are rigidly connected through a plurality of bolts, and then the prefabricated column and the prefabricated beam are fixedly connected. The whole process is relatively convenient to assemble, the construction speed is fast, and the supporting and the formwork can be omitted during installation, thereby saving labor and cost.

[0004] However, it is found in the use process of the above-mentioned device that the bolt is prone to gradual loosening in the vibration process due to the possible vibration, impact and other external forces acting on the structure, the loosening of the bolt will make the connection between the beam head steel member and the column center steel member loose, the rigid connection at the joint is weakened, and the force and bending moment cannot be effectively transmitted. Under the action of load, the prefabricated beam and the prefabricated column are prone to relative displacement, which leads to the decline of the overall stability of the structure, and in severe cases, may cause local or overall instability and damage of the structure. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides an assembly type concrete beam column joint connecting structure, which solves the problems of the gradual loosening of the bolt in the vibration process, the relative displacement between the prefabricated beam and the prefabricated column under the action of load, and the decline of the overall stability of the structure, and in severe cases, may cause local or overall instability and damage of the structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated concrete beam-column joint connection structure, comprising a precast column and a precast beam. A reinforcing cage is installed inside the precast column. A connector is embedded in the precast column. The connector includes symmetrical connecting plates. Threaded reinforcing bars are welded to the connecting plates at equal intervals. Symmetrical limiting plates are fixedly installed on the left and right sides of the connecting plates. The limiting plates have an L-shaped cross-section. A support plate is fixedly installed at the bottom of the limiting plates. The support plate is connected to the connecting plates. Connecting holes are equidistantly arranged on both sides of the connecting plates. Through holes are equidistantly arranged on the limiting plates, corresponding to the connecting holes. An installation component is fixed to one end of the precast beam. The installation component includes an installation plate, which is installed between the limiting plates and the connecting plates. Installation holes are equidistantly arranged on both sides of the installation plate, corresponding to the through holes.

[0007] Preferably, the bottom array of the support plate is provided with reinforcing ribs.

[0008] Preferably, the mounting plate is welded to the I-beam, and a shear stud is welded to the end of the I-beam that connects to the precast beam.

[0009] Preferably, the connecting plate has a rectangular cross-section, and threaded steel bars are welded between the two opposing inner walls of the connecting plate. Symmetrical limiting plates are fixed on the outer sides of the connecting plate.

[0010] Preferably, the threaded steel bars in different directions inside the connecting plate are distributed alternately.

[0011] This utility model provides a prefabricated concrete beam-column joint connection structure. It has the following beneficial effects:

[0012] (1) This utility model can prevent the installation plate from moving within a certain range by limiting the plate and cooperating with the connecting plate and the mounting plate, thereby reducing the possibility of relative displacement between the precast beam and the precast column, reducing the risk of overall stability decline due to excessive relative displacement, and avoiding local or overall structural instability and damage.

[0013] (2) By setting the reinforcing ribs, the present invention increases the support strength of the support plate, enabling it to withstand greater loads. At the same time, the reinforcing ribs can improve the rigidity and stability of the support plate and reduce the deformation of the support plate under stress. Attached Figure Description

[0014] Figure 1 This is a diagram showing the overall structure of this utility model;

[0015] Figure 2 This utility model Figure 1 Internal structure diagram of precast columns;

[0016] Figure 3 For the utility model Figure 1 The structure display of the mounting piece is shown in the figure.

[0017] Figure 4 For the utility model Figure 2 The structure display of the connecting piece is shown in the figure.

[0018] Figure 5 For the utility model Figure 4 The bottom perspective structure display of the connecting piece is shown in the figure.

[0019] Figure 6 For Figure 4 Another structural schematic view is shown in the figure.

[0020] In the figure, 1, prefabricated column; 11, steel cage; 2, prefabricated beam; 3, mounting piece; 31, I-steel; 32, mounting plate; 33, mounting hole; 34, shear bolt; 4, connecting piece; 41, connecting plate; 411, connecting hole; 42, limiting plate; 421, perforation; 43, support plate; 431, reinforcing rib; 44, threaded steel bar. Specific implementation

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Embodiment 1:

[0023] Please refer to Figures 1-5 The utility model provides a kind of fabricated concrete beam-column joint connecting structure, including prefabricated column 1 and prefabricated beam 2, the inside of prefabricated column 1 is provided with steel cage 11, prefabricated column 1 is embedded with connecting piece 4, connecting piece 4 includes the connecting plate 41 of mutual symmetry, threaded steel bar 44 is welded with equidistant array between connecting plate 41, the left and right sides of connecting plate 41 are fixedly installed with the limiting plate 42 of mutual symmetry, limiting plate 42 section is L-shaped, the bottom of limiting plate 42 is fixedly installed with support plate 43, support plate 43 is connected with connecting plate 41, connecting hole 411 is provided with equidistant array on the left and right sides of connecting plate 41, perforation 421 is provided with equidistant array on limiting plate 42, perforation 421 corresponds with connecting hole 411, one end of prefabricated beam 2 is fixed with mounting piece 3, mounting piece 3 includes mounting plate 32, mounting plate 32 is installed between limiting plate 42 and connecting plate 41, mounting hole 33 is provided with equidistant array on the left and right sides of mounting plate 32, mounting hole 33 corresponds with perforation 421.

[0024] The bottom of the support plate 43 is provided with a reinforcing rib 431;

[0025] The mounting plate 32 is welded on the I-beam 31, and the I-beam 31 is welded with a shear bolt 34 on the end connected with the prefabricated beam 2.

[0026] Specifically, the prefabricated column 1 and the prefabricated beam 2 are respectively manufactured in the factory, the prefabricated column 1 is provided with a steel cage 11 and a connecting piece 4, the connecting piece 4 is composed of a connecting plate 41, a threaded steel bar 44, a limiting plate 42 and a support plate 43, the connecting plate 41 has a connecting hole 411, and the limiting plate 42 has a through hole 421; the prefabricated beam 2 is fixed with a mounting piece 3, the mounting piece 3 is composed of a mounting plate 32, an I-beam 31 and a shear bolt 34, the mounting plate 32 has a mounting hole 33, the prefabricated column 1 is transported to the construction site and hoisted into position, and the prefabricated column 1 is in the accurate position;

[0027] The prefabricated beam 2 is hoisted, and the mounting piece 3 at one end of the prefabricated beam 2 is connected with the connecting piece 4 in the prefabricated column 1. Specifically, the mounting plate 32 is inserted between the limiting plate 42 and the connecting plate 41, the mounting hole 33 on the mounting plate 32, the through hole 421 on the limiting plate 42 and the connecting hole 411 on the connecting plate 41 correspond to each other, the mounting plate 32, the limiting plate 42 and the connecting plate 41 are connected and fixed together through the anti-loosening bolt, thereby realizing the connection between the prefabricated beam 2 and the prefabricated column 1;

[0028] The support plate 43 provides direct support for the mounting plate 32, so that the connection between the prefabricated beam 2 and the prefabricated column 1 is more compact and rigid. Through the support of the mounting plate 32, the support plate 43 can limit the vertical displacement of the prefabricated beam 2 to a certain extent, reduce the sinking or shaking of the prefabricated beam 2 caused by load or other factors, help maintain the normal working state of the node connection, improve the overall stability of the structure, and at the same time, the support plate 43 bears part of the load from the mounting plate 32 and the prefabricated beam 2, and disperses and transmits the load to the prefabricated column 1, which can reduce the shear force and tension force borne by the bolt and reduce the risk of gradual loosening of the bolt in the vibration process due to excessive force;

[0029] The reinforcing rib 431 arranged at the bottom of the support plate 43 increases the support strength of the support plate 43, the support plate 43 supports the mounting plate 32, further ensures the stability of the mounting plate 32 in the vertical direction, and makes the whole connection structure more firm;

[0030] Since the mounting plate 32 is welded on the I-beam 31, and the I-beam 31 is welded with the shear bolt 34 at the end connected with the precast beam 2, the shear bolt 34 penetrates into the precast beam 2, forming a shear connection between the precast beam 2 and the I-beam 31, enhancing the shear capacity between the precast beam 2 and the mounting piece 3, and further ensuring the reliability of the connection.

[0031] Embodiment 2

[0032] In order to realize the installation of multiple precast beams 2, on the basis of embodiment 1, please refer to Figure 6 The connecting plate 41 is in the shape of a square box, and the two inner walls of the connecting plate 41 are welded with threaded steel bars 44, and the outer side of the connecting plate 41 is fixed with limit plates 42 symmetrically.

[0033] The threaded steel bars 44 inside the connecting plate 41 are staggered in different directions.

[0034] Specifically, the connecting plate 41 in the shape of a square box has a large connecting area, and the limit plates 42 fixed symmetrically on the outer side can provide installation positions for the mounting plates 32 of the precast beams 2 in multiple directions. At the same time, the threaded steel bars 44 inside the connecting plate 41 staggered in different directions increase the strength and stiffness of the connecting plate 41, so that it can withstand the forces from the multiple precast beams 2 in different directions, making the mechanical properties of the connecting plate 41 in each direction more balanced, and providing reliable connection points for the multiple precast beams 2.

[0035] The connecting plate 41 in the shape of a square box and the threaded steel bars 44 staggered in different directions realize the connection of multiple precast beams 2 in a limited space, fully utilize the space of the precast column 1, avoid setting complex external connection structures for connecting multiple precast beams 2, make the structure more compact, improve the space utilization, and at the same time, it is also conducive to reducing the construction cost and simplifying the construction process.

[0036] Working principle: In the factory, the precast column 1 and the precast beam 2 are respectively made, the steel cage 11 is arranged inside the precast column 1, and the connecting piece 4 is pre-buried. For fewer precast beams 2 installation, use the connecting piece 4 in embodiment 1, for more precast beams 2 installation, use the connecting piece 4 in embodiment 2, fix the mounting piece 3 at one end of the precast beam 2, transport the precast column 1 made to the construction site, hoist it to the accurate position by hoisting equipment and just in place.

[0037] Hoist the precast beam 2 and align the mounting piece 3 at one end of the precast beam 2 with the connector 4 in the precast column 1. Insert the mounting plate 32 between the limiting plate 42 and the connecting plate 41, aligning the mounting hole 33 on the mounting plate 32, the through hole 421 on the limiting plate 42, and the connecting hole 411 on the connecting plate 41. Then, use anti-loosening bolts to sequentially pass through the mounting hole 33, the through hole 421, and the connecting hole 411 to connect and fix the mounting plate 32, the limiting plate 42, and the connecting plate 41 together, thus achieving the connection between the precast beam 2 and the precast column 1.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prefabricated concrete beam-column joint connection structure, comprising a precast column (1) and a precast beam (2), wherein a reinforcing cage (11) is provided inside the precast column (1), characterized in that: The precast column (1) is pre-embedded with a connector (4), which includes symmetrical connecting plates (41). Threaded steel bars (44) are welded to the connecting plates (41) at equal intervals. Symmetrical limiting plates (42) are fixedly installed on the left and right sides of the connecting plates (41). The limiting plates (42) have an L-shaped cross-section. A support plate (43) is fixedly installed at the bottom of the limiting plates (42). The support plate (43) is connected to the connecting plate (41). The connecting plates (41) are equidistant on both sides. The array has connecting holes (411), and the limiting plate (42) has through holes (421) arranged in an equal array. The through holes (421) correspond to the connecting holes (411). One end of the precast beam (2) is fixed with an installation component (3). The installation component (3) includes an installation plate (32). The installation plate (32) is installed between the limiting plate (42) and the connecting plate (41). The left and right sides of the installation plate (32) have installation holes (33) arranged in an equal array. The installation holes (33) correspond to the through holes (421).

2. The prefabricated concrete beam-column joint connection structure according to claim 1, characterized in that: The bottom array of the support plate (43) is provided with reinforcing ribs (431).

3. The prefabricated concrete beam-column joint connection structure according to claim 1, characterized in that: The mounting plate (32) is welded to the I-beam (31), and shear studs (34) are welded to the end of the I-beam (31) that is connected to the precast beam (2).

4. The prefabricated concrete beam-column joint connection structure according to claim 1, characterized in that: The connecting plate (41) has a square frame cross section. Threaded steel bars (44) are welded between the two opposing inner walls of the connecting plate (41). Symmetrical limiting plates (42) are fixed on the outer side of the connecting plate (41).

5. The prefabricated concrete beam-column joint connection structure according to claim 4, characterized in that: The connecting plate (41) has threaded steel bars (44) in different directions distributed in an alternating manner.

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