Beam-column joint connecting structure in fabricated concrete frame

Abstract

The utility model relates to the technical field of assembly type beam-column joints, in particular to a beam-column joint connecting structure in an assembly type concrete frame, which is characterized in that through the design of a #-shaped component structure, a concrete beam and a concrete column are connected into a whole by adopting a #-shaped component, so that assembly type connection between concrete beam-concrete column joints is realized; the flexibility of beam-column joint connection is enhanced; and meanwhile, U-shaped grooves and angle groove structures on the #-shaped assemblies are used for being matched with through bolts, first connecting holes in the side faces of the beam ends, second connecting holes in the fixing plates and the arrangement that column ribs are located in a well opening, the stability of concrete beam-concrete column joint connection is improved, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled beam-column nodes, in particular to a beam-column node connection structure in an assembled concrete frame. Background Art

[0002] Prefabricated concrete frame structures have the advantages of shortening the overall construction period, fast construction speed, high production efficiency, less on-site construction work, and reducing construction noise. They are one of the effective measures to achieve green environmental protection, energy conservation and emission reduction in the construction industry, and have received widespread attention and research.

[0003] For example: Application No. 201721353492.8 discloses an assembled self-tuning prestressed frame structure, in which a column joint (such as Figure 5 As shown: it is a tic-tac-toe structure), and a column connecting plate is welded on the beam connecting surface, bolt holes are opened on the column connecting plate, and then high-strength bolts are used to connect the beam connecting plate. It can be seen that it is necessary to install a beam connecting plate on the beam. Although it can enhance flexibility and improve seismic resistance, it leads to unsatisfactory connection stability between the beam and the column, which is very easy to fall off; moreover, the stability of the column joint installation is poor.

[0004] Another example: 201811359661.8 discloses a study on a middle column node with a self-resetting function based on an assembled underground structure, including a prefabricated reinforced concrete column, a prefabricated longitudinal beam, an elastic shock-absorbing layer and other structural settings, so that the prefabricated reinforced concrete column can produce an allowable displacement under the action of an earthquake and improve the seismic resistance. This structure is not suitable for flexible connection between concrete beams and concrete columns, and it is difficult to meet the construction requirements of assembled concrete frame structures.

[0005] Based on this, this research team has initiated a project to study the connection method of beam-column nodes in concrete frame structures. Combined with the flexible improvement foundation, it fully guarantees the stability of the beam-column node connection in the concrete frame structure and provides a new structure for the beam-column node connection in the concrete frame structure. Utility Model Content

[0006] In order to solve the above technical problems existing in the prior art, the utility model provides a beam-column node connection structure in an assembled concrete frame.

[0007] This is achieved specifically through the following technical solutions:

[0008] A beam-column node connection structure in an assembled concrete frame comprises a concrete beam, a concrete column and a tic-tac-toe assembly, wherein the concrete beam and the concrete column are connected into a whole through the tic-tac-toe assembly, and the concrete beam consists of a beam middle and beam ends arranged at both ends of the beam middle; the tic-tac-toe assembly consists of four connecting plates connected end to end to a wellhead and fixed plates extending along both ends of the connecting plates, and the connecting plates and two of the fixed plates form a U-shaped groove, and two adjacent fixed plates form an angle groove; a plurality of second connecting holes are arranged on the fixed plates, the beam ends can be inserted into the U-shaped groove, and a first connecting hole matching the second connecting hole is penetrated through the side of the beam ends; through bolts are arranged in the first connecting hole and the second connecting hole; the tic-tac-toe assembly is installed on the top of the concrete column, a plurality of column bars are passed through the top of the concrete column, and the column bars are located in the wellhead; a column base is arranged at the position where the angle groove is projected to the top of the concrete column.

[0009] Through the design of the tic-tac-toe component structure, the concrete beam and concrete column are connected into a whole by using the tic-tac-toe component to realize the assembled connection between the concrete beam-concrete column node, and enhance the flexibility of the beam-column node connection; at the same time, the U-groove and angle groove structure on the tic-tac-toe component, in combination with the through bolts, the first connecting hole on the side of the beam end, the second connecting hole on the fixing plate and the column reinforcement located in the wellhead, improves the stability of the concrete beam-concrete column node connection and improves the safety.

[0010] In order to enhance the stability of the concrete beam-concrete column node connection, preferably, the column base is provided with reinforcing ribs perpendicular to the column base.

[0011] In order to improve the stability of the tic-tac-toe assembly installed on the top of the concrete column, preferably, a reinforcement hole is provided at the cross-connection position between the connecting plate and the fixing plate. More preferably, a filling column is provided in the reinforcement hole. More preferably, the filling column is a reinforcement column formed by pouring concrete or a column reinforcement extending from the top of the concrete column.

[0012] In order to improve the stability and flexibility of the connection between the concrete beam and the cross-shaped component and improve the flexibility of the connection between the concrete beam and the concrete column node, preferably, the end of the beam end is provided with a connection component, and the connection component can connect the connection plate and the beam end. More preferably, the connection component includes a screw through hole provided on the connection plate and a connecting screw provided at the end of the beam end, the connecting screw can pass through the screw through hole into the wellhead, and a screw fastener is provided on the connecting screw located inside the wellhead; the connecting screw is integrally formed with the beam end.

[0013] In order to enhance the ability of the concrete beams on opposite sides of the criss-cross-shaped component to form a whole and improve the flexibility of the connection, preferably, a steel strand is integrally formed on the connecting screw, and a connecting hook is integrally formed on the steel strand; the connecting hook can be inserted into the wellhead along with the connecting screw, and two opposite connecting hooks can be hooked together.

[0014] In order to enhance the flexibility of the connection between the concrete beam and the concrete column node, preferably, an elastic part is provided between the concrete beam and the fixing plate; the elastic part includes a steel plate installed close to the concrete beam and a rubber plate with elastic effect provided between the steel plate and the fixing plate. Preferably, the rubber plate is a rubber plate and / or a plastic plate.

[0015] Compared with the prior art, the technical effects created by the present invention are embodied in:

[0016] The invention has a simple structure, a simple installation process, and a low construction cost, and can realize the assembled connection of concrete beams and concrete columns, thereby improving the flexibility of the connection between the concrete beam-concrete column nodes, enhancing the stability of the connection between the concrete beam-concrete column nodes, and improving the seismic resistance.

[0017] The invention can prefabricate concrete beams and concrete columns, which greatly saves construction costs, and uses criss-cross components to connect beam-column nodes, combined with the control of the criss-cross component structure and the beam ends of the concrete beams and the top structure of the concrete columns, which greatly improves the stability and flexibility of the connection between the concrete beams and concrete columns and enhances the seismic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Create an overall structural diagram for the present invention.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure from top view.

[0020] Figure 3 Another embodiment of the present invention is a schematic diagram of the overall structure.

[0021] Figure 4 for Figure 3 Schematic diagram of the structure viewed from above.

[0022] Figure 5 for Figure 4 Another schematic diagram of the structure of the implementation.

[0023] Figure 6 The present invention provides a schematic diagram of the concrete beam end structure.

[0024] Figure 7 A well-shaped assembly is created for the present invention.

[0025] 1-concrete beam 2-concrete column 3-rebar cage 4-fixing plate 5-connecting plate 6-column reinforcement 7-beam end 8-middle of beam 9-through bolt 10-column base 11-reinforcement hole 12-reinforcement rib 13-connecting screw 14-connecting hook 15-first connecting hole 16-tic-tat component 17-second connecting hole 18-screw through hole 19-screw fastener 20-elastic part 21-filling column. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further defined below in conjunction with the accompanying drawings and specific implementation methods, but the scope of protection required is not limited to the description.

[0027] The concrete beam 1 used in the invention is a prefabricated beam, and a steel cage 3 (such as Figure 1 , Figure 3 and Figure 6 As shown), the concrete beam 1 is composed of a beam middle 8 and beam end components located at both ends of the beam middle 8, and the volume and structure of the steel cage 3 in the beam middle 8 and the beam end are consistent, which can fully ensure the overall force bearing capacity of the concrete beam 1. In some embodiments, as Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the beam-column node connection structure in the assembled concrete frame includes a concrete beam 1, a concrete column 2 and a well-shaped component 16, wherein the concrete beam 1 and the concrete column 2 are connected into a whole through the well-shaped component 16, thereby realizing the assembled installation between the concrete beam 1 and the concrete column 2; the concrete beam 1 is composed of a beam middle 8 and beam ends 7 arranged at both ends of the beam middle 8; the well-shaped component 16 is composed of four connecting plates 5 connected to the wellheads at both ends and fixed plates 4 extending from both ends of the connecting plates 5, and the connecting plates 5 and two of the fixed plates 4 form a U-shaped groove, and two adjacent fixed plates 4 form an angle groove; a plurality of second connecting holes 17 are provided on the fixed plate 4, and the beam end 7 can be inserted into the U-shaped groove, and the side of the beam end 7 is penetrated by a second connecting hole 17; a through bolt 9 is provided in the first connection hole 15 and the second connection hole 17, which is convenient for installing the concrete beam 1 on the top of the concrete column 2, improving the flexibility and stability of the connection between the concrete beam 1 and the concrete column 2, and enhancing the seismic resistance of the connection node between the concrete beam 1 and the concrete column 2; the well-shaped component 16 is installed on the top of the concrete column 2, and a plurality of column bars 6 are passed through the top of the concrete column 2, and the column bars 6 are located in the wellhead, which ensures the continuity of the rise of the concrete column 2 and improves the stability of the node connection between the concrete beam 1 and the concrete column 2; a column base 10 is provided at the position where the angle groove is projected to the top of the concrete column 2; the post-cast concrete covers the angle groove along the direction of the concrete column 2, thereby fixing the well-shaped component 16 and improving stability.

[0028] During the construction of the present invention, while pouring the concrete column 2, the concrete beam 1 is Figure 6 The structure shown is prefabricated and tied into a tic-tac-toe steel cage and then poured with concrete. Figure 7 The well-shaped component 16 shown in the figure can be integrally formed by casting technology as shown in the figure. Figure 7 The well-shaped assembly 16 shown in the figure can be welded into a Figure 7 and when the concrete column 2 is poured, the column reinforcement 6 is reserved at the top of the concrete column 2, and after the concrete column 2 is formed, the well-shaped component 16 is installed on the concrete column 2, and then the concrete beam 1 is as shown Figure 1-5 The structural installation shown realizes the assembled installation of the concrete beam 1 and the concrete column 2, enhances the flexibility of the connection between the nodes of the concrete beam 1 and the concrete column 2, and improves the earthquake resistance.

[0029] like Figure 3 and Figure 4 and Figure 5As shown, in some embodiments, the column base 10 is provided with a reinforcing rib 12 perpendicular to the column base 10. The post-cast concrete covers the angle groove along the direction of the concrete column 2, fixes the tic-tac-toe component 16, and prevents the covering layer formed by the post-cast concrete from falling off, ensuring that the tic-tac-toe component 16 is fixed in the concrete column 2, thereby enhancing stability; at the same time, the tic-tac-toe component 16 structure is used to ensure the flexibility of the assembled connection of the beam-column node and enhance the earthquake resistance.

[0030] like Figure 3 and Figure 4 and Figure 5 and Figure 7 As shown, in some embodiments, a reinforcing hole 11 is provided at the cross-connection position of the connecting plate 5 and the fixing plate 4. The stability of the connection between the tic-tac-toe assembly 16 and the concrete column 2 is enhanced. A filling column 21 is provided in the reinforcing hole 11. The filling column 21 is a reinforcing column formed by pouring concrete or a column reinforcement 6 extending from the top of the concrete column 2. The tic-tac-toe assembly 16 and the concrete column 2 are integrated.

[0031] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, a connection assembly is provided at the end of the beam end 7, and the connection assembly can connect the connection plate 5 and the beam end 7, thereby enhancing the stability of the connection between the end of the concrete beam 1 and the tic-tac-toe assembly 16.

[0032] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the connection assembly includes a screw through hole 18 penetrating the connection plate 5 and a connection screw 13 provided at the end of the beam end 7, the connection screw 13 can pass through the screw through hole 18 into the wellhead, and a screw fastening member 19 is provided on the connection screw 13 located inside the wellhead; the connection screw 13 is integrally formed with the beam end 7. The flexibility of the connection between the end of the concrete beam 1 and the cross-shaped assembly 16 is improved, and the earthquake resistance is improved.

[0033] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, in some embodiments, the connecting screw 13 is integrally provided with a steel strand, and the steel strand is integrally provided with a connecting hook 14; the connecting hook 14 can be inserted into the wellhead along with the connecting screw 13, and two opposite connecting hooks 14 can be hooked together. The stability and flexibility of the connection between the relative beams are ensured. The steel strand used in this embodiment can be replaced by a spring or the steel strand can be directly removed and the connecting screw 13 and the connecting hook 14 can be integrally connected.

[0034] like Figure 1-5 As shown, in some embodiments, an elastic part 20 is provided between the concrete beam 1 and the fixing plate 4; the elastic part 20 includes a steel plate installed close to the concrete beam 1 and a rubber plate with elastic effect provided between the steel plate and the fixing plate 4. The flexibility between the nodes of the concrete beam 1 and the concrete column 2 is enhanced, and the earthquake resistance is enhanced.

[0035] In some embodiments, the rubber sheet is a rubber sheet and / or a plastic sheet. In some embodiments, the thickness of the rubber sheet is 0.5-5 cm, for example: 0.5 cm, 1 cm, 1.3 cm, 1.5 cm, 1.8 cm, 2.5 cm, 3.1 cm, 3.7 cm, 4.2 cm, 4.5 cm, 5 cm, etc. The distance from the end of the beam end 7 to the edge of the concrete column 2 is ≥ 10 cm, for example: 10 cm, 12 cm, 15 cm, 18 cm, 19 cm, 20 cm, etc. A plurality of ridges are provided on the contact surface between the beam end 7 and the concrete column 2, and a plurality of grooves are provided on the contact surface between the concrete column 2 and the beam end 7, and the grooves and the ridges are matched and buckled together. It helps to enhance stability and flexibility and improve seismic resistance.

[0036] Other matters not covered in the invention can be realized and combined with reference to the prior art or common knowledge and conventional technical means known to those skilled in the art. The above is only a preferred specific implementation of the invention, but the protection scope of the invention is not limited thereto. Any technician familiar with the technical field can replace or change the technical solution and inventive concept of the invention within the technical scope disclosed by the invention, which should be covered within the protection scope of the invention.

Claims

1. A beam-column node connection structure in an assembled concrete frame, comprising a concrete beam (1), a concrete column (2) and a tic-tac-toe assembly (16), wherein the concrete beam (1) and the concrete column (2) are connected to form a whole through the tic-tac-toe assembly (16), characterized in that: The concrete beam (1) is composed of a beam middle (8) and beam ends (7) arranged at both ends of the beam middle (8); the well-shaped component (16) is composed of four connecting plates (5) connected end to end to the wellhead and fixed plates (4) extending from both ends of the connecting plates (5), and the connecting plates (5) and two fixed plates (4) form a U-shaped groove, and two adjacent fixed plates (4) form an angle groove; the fixed plates (4) are provided with a plurality of second connecting holes (17), and the beam ends (7) can be inserted into the fixed plates (4). The U-shaped groove is provided in the side of the beam end (7), and a first connection hole (15) matching the second connection hole (17) is provided; through bolts (9) are provided in the first connection hole (15) and the second connection hole (17); the well-shaped component (16) is installed at the top of the concrete column (2), and a plurality of column bars (6) are passed through the top of the concrete column (2), and the column bars (6) are located in the wellhead; a column base (10) is provided at the top of the concrete column (2) where the angle groove is projected.

2. The beam-column node connection structure in the assembled concrete frame according to claim 1, characterized in that: The column base (10) is provided with a reinforcing rib (12) perpendicular to the column base (10).

3. The beam-column node connection structure in the assembled concrete frame according to claim 1, characterized in that: A reinforcement hole (11) is provided at the cross-connection position between the connecting plate (5) and the fixing plate (4).

4. The beam-column node connection structure in the assembled concrete frame as claimed in claim 3, characterized in that: A filling column (21) is provided in the reinforcement hole (11).

5. The beam-column node connection structure in the assembled concrete frame as claimed in claim 4, characterized in that: The filling column (21) is a reinforcement column formed by pouring concrete or a column reinforcement (6) extending from the top of the concrete column (2).

6. The beam-column node connection structure in the assembled concrete frame according to claim 1, characterized in that: The end of the beam end (7) is provided with a connection component, and the connection component is capable of connecting the connection plate (5) and the beam end (7).

7. The beam-column node connection structure in the assembled concrete frame as claimed in claim 6, characterized in that: The connection assembly comprises a screw through hole (18) penetrating the connection plate (5) and a connection screw (13) arranged at the end of the beam end (7); the connection screw (13) can pass through the screw through hole (18) into the wellhead, and a screw fastening member (19) is provided on the connection screw (13) located inside the wellhead; the connection screw (13) and the beam end (7) are integrally formed.

8. The beam-column node connection structure in the assembled concrete frame as claimed in claim 7, characterized in that: A steel strand is integrally formed on the connecting screw (13), and a connecting hook (14) is integrally formed on the steel strand; the connecting hook (14) can be inserted into the wellhead along with the connecting screw (13), and two opposite connecting hooks (14) can be hooked together.

9. The beam-column node connection structure in the assembled concrete frame according to claim 1, characterized in that: An elastic part (20) is provided between the concrete beam (1) and the fixing plate (4); the elastic part (20) comprises a steel plate installed close to the concrete beam (1) and a rubber plate with elastic effect provided between the steel plate and the fixing plate (4).

10. The beam-column node connection structure in the assembled concrete frame according to claim 9, characterized in that: The rubber sheet is a rubber sheet and / or a plastic sheet.

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