Node mechanism of concrete filled steel tube composite column and frame beam

Abstract

The utility model relates to the technical field of architectural architecture, in particular to a node mechanism of a concrete filled steel tube composite column and a frame beam, which comprises a main body, a support mounting component fixedly connected to the bottom of the main body, a first pouring component arranged on the side surface of the support mounting component, and a beam hinge component arranged at the bottom of the first pouring component, a second pouring assembly is arranged at the bottom of the body. The beam longitudinal bars, the beam stirrups, the column longitudinal bars and the column stirrups are additionally arranged in the concrete pouring point, the number of concrete cracks on the top of the frame column can be reduced, stress of the frame beam bracket plate is low, the frame beam bracket plate and the frame beam bracket plate are all in an elastic state, and the reinforced concrete frame transfer joint has good technical and economic performance. The purpose of anti-seismic performance of strong joints and weak components can be achieved, and by means of the laminated connection structure of the frame beam bracket plates, the problem of frame beam steel bar welding can be solved, and the influence of eccentric stress of a reinforced concrete frame can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, specifically to a joint mechanism for steel-concrete composite columns and frame beams. Background Technology

[0002] In large public buildings such as airport terminals, railway passenger stations, and integrated transportation hubs, a structural form consisting of a concrete frame at the bottom and a large-span steel roof at the top is widely adopted. For this type of structure, the reliable transfer of internal forces between the steel tubular columns supporting the steel roof and the lower concrete frame columns and beams is crucial. To date, scholars both domestically and internationally have made some progress in the study of the joints between concrete tubular columns and H-beams, as well as the stress performance of the joints between reinforced concrete columns and H-beams.

[0003] Currently, the transition joint between steel tube columns and reinforced concrete frames differs significantly from the aforementioned steel tube concrete column-reinforced concrete beam joint. The connection structure between the steel tube column and the lower reinforced concrete column is complex. Due to its excellent load-bearing performance, steel tube concrete composite column technology is widely used in building engineering. Compared to square steel tube concrete, the steel tube wall of circular steel tube concrete provides better confinement to the core concrete, making it more suitable for use in bearing columns. However, the curved surface of the circular steel tube makes welding inconvenient. Therefore, a joint mechanism between steel tube concrete composite columns and frame beams is needed to address these issues. Utility Model Content

[0004] To address the significant differences between current steel-concrete composite column-reinforced concrete frame transition joints and the aforementioned steel-concrete composite column-reinforced concrete beam joints, and the complex connection structure between the steel-concrete column and the lower-level reinforced concrete column, this invention addresses the challenges of steel-concrete composite column technology. Due to its superior load-bearing performance, steel-concrete composite column technology is widely used in construction engineering. Compared to square steel-concrete composite columns, circular steel-concrete composite columns offer better constraint on the core concrete due to the steel tube wall, making them more suitable for bearing columns. However, the curved surface of the circular steel tube makes welding inconvenient. The purpose of this invention is to provide a joint mechanism between steel-concrete composite columns and frame beams to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A joint mechanism for a steel-concrete composite column and frame beam includes a main body, a support assembly fixedly connected to the bottom of the main body, a first casting assembly provided on the side of the support assembly, a beam hinge assembly provided at the bottom of the first casting assembly, and a second casting assembly provided at the bottom of the main body.

[0007] The supporting assembly includes a steel pipe column, a frame beam corbel plate is fixedly connected to the side of the steel pipe column, a stud is provided inside the frame beam corbel plate, a grouting hole is opened inside the steel pipe column, an actuator is installed on the side of the steel pipe column, and the bottom end of the actuator abuts against a reaction wall.

[0008] The first casting component includes a concrete beam, and longitudinal reinforcement bars and stirrups are fixedly connected inside the concrete beam.

[0009] The second casting component includes a concrete column, wherein longitudinal reinforcement bars and stirrups are fixedly connected inside the concrete column.

[0010] As a preferred embodiment of this utility model, the frame beam corbel plate is provided with four, and the studs are provided with a plurality of studs.

[0011] As a preferred embodiment of this utility model, force sensors are installed on the side of the steel pipe column, and four force sensors are provided.

[0012] As a preferred embodiment of this utility model, the beam hinge assembly includes an adjusting support rod, and a locking plate is fixedly connected to the top of the adjusting support rod. Two adjusting support rods and locking plates are provided.

[0013] As a preferred embodiment of this utility model, a plurality of longitudinal bars and stirrups are provided in the beam, and the longitudinal bars and stirrups are distributed in a rectangular staggered pattern.

[0014] As a preferred embodiment of this utility model, a plurality of column longitudinal bars and column stirrups are provided, and the column longitudinal bars and column stirrups are distributed in a rectangular staggered pattern.

[0015] As a preferred embodiment of this utility model, the main body includes a portal steel frame, and a reaction frame is fixedly connected to the top of the portal steel frame.

[0016] As a preferred embodiment of this utility model, a displacement gauge is fixedly connected to the bottom of the portal steel frame, and a jack is installed at the bottom of the portal steel frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, by using beam longitudinal reinforcement, beam stirrups, column longitudinal reinforcement, and column stirrups installed inside the concrete pouring point, the number of concrete cracks at the top of the frame column will be reduced, the bottom wall of the steel pipe column may enter yielding, and the steel pipe column and node area will not experience out-of-plane deformation, thus having good energy dissipation capacity. The maximum stress of the steel pipe column occurs near the top of the frame, and the stress of the transition section steel pipe is lower than that of the steel pipe column. When the ultimate deformation state is reached, the stress of the frame beam corbel plate is low and is in an elastic state. This also gives the reinforced concrete frame transfer node good technical and economic performance, achieving the seismic performance goal of "strong node, weak component".

[0019] 2. In this utility model, by utilizing the layered connection structure of the corbel plate of the frame beam, the problem of welding the frame beam reinforcement can be solved, and the influence of eccentric stress on the reinforced concrete frame can be reduced. Welding construction is convenient. The web reinforcement of the frame beam is connected to the transfer node through the vertical connecting plate. The width of the connecting plate should meet the welding length requirements of the web reinforcement. In addition, the connecting plate of the web reinforcement also has a certain enhancement effect on the shear bearing capacity of the end section of the frame beam. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the support and mounting component structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the first casting component structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the second casting component of this utility model.

[0024] In the diagram: 1. Main body; 101. Portal steel frame; 102. Reaction frame; 103. Displacement gauge; 104. Jack; 2. Support assembly; 201. Steel pipe column; 202. Grouting hole; 203. Actuator; 204. Force sensor; 205. Frame beam corbel plate; 206. Stud; 3. Beam hinge assembly; 301. Adjustable support rod; 302. Clamping plate; 4. First casting assembly; 401. Concrete beam; 402. Beam longitudinal reinforcement; 403. Beam stirrups; 5. Second casting assembly; 501. Concrete column; 502. Column longitudinal reinforcement; 503. Column stirrups. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example: Please refer to Figures 1-4 The node mechanism of a steel-concrete composite column and frame beam shown includes a main body 1, a support mounting component 2 fixedly connected to the bottom of the main body 1, a first casting component 4 provided on the side of the support mounting component 2, a beam hinge component 3 provided at the bottom of the first casting component 4, and a second casting component 5 provided at the bottom of the main body 1.

[0027] In this embodiment, reference is made to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the supporting assembly 2 includes a steel pipe column 201, with a frame beam corbel plate 205 fixedly connected to the side of the steel pipe column 201. The frame beam corbel plate 205 has studs 206 inside. Grouting holes 202 are opened inside the steel pipe column 201. An actuator 203 is installed on the side of the steel pipe column 201, and the bottom end of the actuator 203 abuts against a reaction wall. The first pouring assembly 4 includes a concrete beam 401, with longitudinal beam reinforcement 402 fixedly connected inside the concrete beam 401. The second casting component 5 includes a concrete column 501, with longitudinal reinforcement 502 and stirrups 503 fixedly connected inside the concrete column 501. By using the longitudinal reinforcement 402, stirrups 403, longitudinal reinforcement 502, and stirrups 503 inside the concrete pouring point, the number of concrete cracks at the top of the frame column will be reduced, the bottom wall of the steel pipe column 201 may enter yielding, and the steel pipe column 201 and the node area will not experience out-of-plane deformation, thus having good energy dissipation capacity.

[0028] The frame beam corbel plate 205 is provided with four pieces, and several shear studs 206 are provided. Force sensors 204 are installed on the side of the steel pipe column 201, and four force sensors 204 are provided. The beam hinge assembly 3 includes an adjusting support rod 301, with a clamping plate 302 fixedly connected to the top of the adjusting support rod 301. Two adjusting support rods 301 and clamping plates 302 are provided. Several beam longitudinal reinforcement bars 402 and beam stirrups 403 are provided, arranged in a rectangular staggered pattern. Column longitudinal reinforcement bars 50... 2. Several column stirrups 503 are provided. The column longitudinal bars 502 and column stirrups 503 are distributed in a rectangular staggered manner. The layered connection structure of the frame beam corbel plate 205 can solve the problem of welding of frame beam reinforcement and reduce the influence of eccentric stress on reinforced concrete frame. Welding construction is convenient. The web reinforcement of the frame beam is connected to the transfer node through the vertical connection plate. The width of the connection plate should meet the welding length requirements of the web reinforcement. In addition, the connection plate of the web reinforcement also has a certain enhancement effect on the shear bearing capacity of the end section of the frame beam.

[0029] In this embodiment, reference is made to Figure 1 and Figure 2 As shown, the main body 1 includes a portal steel frame 101. A reaction frame 102 is fixedly connected to the top of the portal steel frame 101, a displacement gauge 103 is fixedly connected to the bottom of the portal steel frame 101, and a jack 104 is installed at the bottom of the portal steel frame 101. The reaction frame 102 can be used for the calibration of the jack 104 and for testing the compressive strength of various materials such as large concrete components and large workpieces.

[0030] In this scheme, a joint mechanism for a steel-concrete composite column and frame beam is used by inserting beam longitudinal reinforcement 402, beam stirrups 403, column longitudinal reinforcement 502, and column stirrups 503 horizontally and vertically inside the steel-concrete column 201 to enhance the stability of the pouring point. Concrete is then injected into the grouting hole 202. When it dries, the pouring concrete is tested for expansion using adjusting support rod 301 and clamping plate 302. The frame beam corbel plate 205 and studs 206 reinforce the stability of the pouring unit. The actuator 203 and force sensor 204 work together to detect the stability of the pouring point. The actuator 203 is a key component for implementing active vibration control and an important part of the active control system. It is used for dynamic testing and is essential for dynamic testing.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A node mechanism of a concrete-filled steel tube composite column and a frame beam, comprising a main body (1), characterized in that: The bottom of the main body (1) is fixedly connected with a support assembly (2), the side of the support assembly (2) is provided with a first pouring assembly (4), the bottom of the first pouring assembly (4) is provided with a beam hinge assembly (3), and the bottom of the main body (1) is provided with a second pouring assembly (5). The support assembly (2) comprises a steel pipe column (201), the side of the steel pipe column (201) is fixedly connected with a frame beam bracket plate (205), the inside of the frame beam bracket plate (205) is provided with a peg (206), the inside of the steel pipe column (201) is provided with a grouting hole (202), the side of the steel pipe column (201) is provided with an actuator (203), and the bottom end of the actuator (203) abuts against a counterforce wall. The first pouring assembly (4) comprises a concrete beam (401), and the inside of the concrete beam (401) is fixedly connected with a beam longitudinal reinforcement (402) and a beam stirrup (403). The second pouring assembly (5) comprises a concrete column (501), and the inside of the concrete column (501) is fixedly connected with a column longitudinal reinforcement (502) and a column stirrup (503).

2. A node mechanism for a concrete filled steel tube composite column and frame beam according to claim 1, characterized in that: The frame beam bracket plate (205) is provided with four frame beam bracket plates (205), and the peg (206) is provided with a plurality of pegs (206).

3. The node mechanism of a concrete-filled steel tubular composite column and frame beam according to claim 1, characterized in that: The side of the steel pipe column (201) is provided with a force sensor (204), and the force sensor (204) is provided with four force sensors (204).

4. The node mechanism of a concrete-filled steel tubular composite column and frame beam according to claim 1, characterized in that: The beam hinge assembly (3) comprises an adjusting support rod (301), and the top of the adjusting support rod (301) is fixedly connected with a clamping plate (302).

5. The node mechanism of a concrete-filled steel tubular composite column and frame beam according to claim 1, characterized in that: The beam longitudinal reinforcement (402) and the beam stirrup (403) are provided with a plurality of beam longitudinal reinforcements (402) and beam stirrups (403), and the beam longitudinal reinforcement (402) and the beam stirrup (403) are arranged in a rectangular staggered manner.

6. A node mechanism for a concrete filled steel tube composite column and frame beam according to claim 1, characterized in that: The column longitudinal reinforcement (502) and the column stirrup (503) are provided with a plurality of column longitudinal reinforcements (502) and column stirrups (503), and the column longitudinal reinforcement (502) and the column stirrup (503) are arranged in a rectangular staggered manner.

7. The node mechanism of a concrete-filled steel tubular composite column and frame beam according to claim 1, characterized in that: The main body (1) comprises a portal steel frame (101), and the top of the portal steel frame (101) is fixedly connected with a counterforce frame (102).

8. A node mechanism for a concrete filled steel tube composite column and frame beam according to claim 7, characterized in that: The bottom of the portal steel frame (101) is fixedly connected with a displacement meter (103), and the bottom of the portal steel frame (101) is provided with a jack (104).

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