A reinforced concrete column-beam connection structure

Abstract

This utility model relates to the field of column-beam connection technology, and discloses a connection structure for reinforced concrete columns and beams, including a column casting shell. Slots are formed on both sides of the top of the column casting shell, and beam casting shells are connected to both sides of the column casting shell at the edges of the slots. Two internal steel sections are connected inside the column casting shell. The arrangement of the vertical reinforcement and the first longitudinal reinforcement, as well as their welded or wire-tied connections, enhances the connection strength between the beam steel sections, improving the beam's bending and shear resistance. Simultaneously, the first longitudinal reinforcement penetrates both column steel sections, further enhancing the overall integrity between the beam and column. Through the threaded connection and fastening nut in the reinforcement mechanism, and the positioning of the second longitudinal reinforcement by the adapter groove, the connection strength between the beam steel sections and the column steel sections is further enhanced, and the number of holes in the column steel sections is reduced, effectively lowering the cross-sectional loss rate of the column steel sections caused by the beam longitudinal reinforcement passing through the holes.

Description

Technical Field

[0001] This utility model relates to the field of column-beam connection technology, specifically a connection structure for reinforced concrete columns and beams. Background Technology

[0002] Currently, reinforced concrete frame joints refer to the junctions between frame beams and columns, also known as the core area of ​​the joint. Earthquake damage surveys show that earthquake damage to frame structures mostly occurs in the core area of ​​column and beam-column joints. The main forms of frame joint failure are shear failure in the core area of ​​the joint and failure of the reinforcement anchorage. Severe failures can cause the collapse of the entire frame, and repairing joints after failure is also quite difficult. Therefore, the importance of joint design cannot be ignored.

[0003] The existing connection method between reinforced concrete beams and steel-concrete composite columns has the following defects: the web of the steel in the column is prone to a cross-sectional loss rate of more than 25% due to the longitudinal reinforcement of the beam passing through it, which requires additional reinforcement measures and affects the stress performance of the component joint. Therefore, a connection structure for reinforced concrete columns and beams is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a connection structure for reinforced concrete columns and beams to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a column casting shell, with slots on both sides of the top of the column casting shell. Beam casting shells are connected to both sides of the column casting shell at the edges of the slots. Two internal column steel sections are connected inside the column casting shell, and the two internal column steel sections are arranged in a crisscross pattern. One of the internal column steel sections has an extension steel plate and a beam steel section connected to both sides. One end of the beam steel section has a fitting groove corresponding to the extension steel plate, and the extension steel plate is connected inside the fitting groove. Multiple vertical ribs are connected between the webs of the beam steel sections. A first longitudinal rib is connected to one side of the surface of each vertical rib, and one end of the first longitudinal rib penetrates the two internal column steel sections, extending to the web of the other beam steel section. Multiple second longitudinal ribs are connected to the tops of the two beam steel sections, and the multiple second longitudinal ribs are fixed to the surface of the internal column steel sections by welding. A reinforcing mechanism is connected to the surface of the two internal column steel sections.

[0006] Preferably, the column and beam are cast as a single unit through the column casting shell and the beam casting shell.

[0007] Preferably, one end of each of the two column internal steel sections is fixed to the steel frame on both sides of the column casting shell by welding, and the extension steel plate is fixedly connected to the fitting groove by bolts and nuts.

[0008] Preferably, both ends of the vertical reinforcement are fixed to the web of the inner steel section of the beam by welding, and the vertical reinforcement and the first longitudinal reinforcement are connected by welding points or binding wires.

[0009] Preferably, two reinforcing hoops are provided on the surface of the steel section inside the column. The reinforcing hoops are fixed to the surface of the steel section inside the column by welding, and the reinforcing hoops can be added or removed according to the actual situation.

[0010] Preferably, the reinforcement mechanism includes an upper fixing plate and a lower fixing plate respectively connected to the top and bottom of the steel section inside the beam. A connecting bolt is threaded between the upper fixing plate and the lower fixing plate. A fastening nut is threaded on the surface of the connecting bolt at the bottom of the lower fixing plate. Multiple adapter grooves are provided at the bottom of the upper fixing plate and the top of the lower fixing plate corresponding to the second longitudinal reinforcement.

[0011] Preferably, the top ends of the inner steel sections of both beams are connected with multiple studs.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the setting of vertical bars and the first longitudinal bars, as well as the welding points or wire ties between them, enhance the connection strength between the steel sections in the beam, improve the bending and shear resistance of the beam, and at the same time, the first longitudinal bars penetrate through the steel sections in the two columns, further enhancing the integrity between the beam and the column; through the threaded connection and the fixing of the fastening nut in the reinforcement mechanism, as well as the positioning of the second longitudinal bars by the adapter groove, not only is the connection strength between the steel sections in the beam and the steel sections in the column further enhanced, but the number of holes in the steel sections in the column is also reduced, which will effectively reduce the section loss rate of the steel sections in the column caused by the longitudinal bars of the beam passing through the holes. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of a reinforced concrete column-beam connection structure.

[0014] Figure 2 This is a schematic diagram of the internal structure of a reinforced concrete column-beam connection structure.

[0015] Figure 3 An exploded view of the internal structure of a reinforced concrete column-beam connection structure.

[0016] Figure 4 This is a schematic diagram of a reinforcement mechanism for a reinforced concrete column-beam connection structure.

[0017] In the diagram: 1. Column shell; 2. Slot; 3. Beam shell; 4. Column internal steel; 5. Extended steel plate; 6. Beam internal steel; 7. Fitting groove; 8. Vertical reinforcement; 9. First longitudinal reinforcement; 10. Second longitudinal reinforcement; 11. Reinforcing hoop; 12. Reinforcing mechanism; 121. Upper fixing plate; 122. Lower fixing plate; 123. Connecting bolt; 124. Fastening nut; 125. Adaptor groove; 13. Stud. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4 This utility model provides a technical solution, including a column casting shell 1, with slots 2 on both sides of the top of the column casting shell 1, and beam casting shells 3 connected to both sides of the column casting shell 1 at the slots 2. Two internal column steel sections 4 are connected inside the column casting shell 1, and the two internal column steel sections 4 are arranged in a cross pattern. One of the internal column steel sections 4 has an extension steel plate 5 and a beam steel section 6 connected to both sides. One end of the beam steel section 6 has a fitting groove 7 corresponding to the extension steel plate 5, and the extension steel plate 5 is connected inside the fitting groove 7. Multiple vertical ribs 8 are connected between the webs of the beam steel section 6. A first longitudinal rib 9 is connected to one side of the surface of the vertical rib 8, and one end of the first longitudinal rib 9 passes through the two internal column steel sections 4 and extends to the web between the two beam steel sections 6. Multiple second longitudinal ribs 10 are connected to the top of the two beam steel sections 6, and the multiple second longitudinal ribs 10 are fixed to the surface of the internal column steel section 4 by welding. A reinforcement mechanism 12 is connected to the surface of the two internal column steel sections 4.

[0020] By using the column casting shell 1 and the beam casting shell 3, the columns and beams are cast as a single unit. This single-unit casting avoids the construction joints that are produced by traditional multi-stage casting, eliminates common quality problems such as leakage and cracks caused by improper treatment of construction joints, and improves the waterproof performance and durability of the structure.

[0021] One end of each of the two internal steel sections 4 is fixed to the steel ribs on both sides of the column casting shell 1 by welding. The extension steel plate 5 is fixedly connected to the fitting groove 7 by bolts and nuts. The function of this is to fix one end of each of the two internal steel sections 4 to the steel ribs on both sides of the column casting shell 1 by welding. This welding connection method can provide extremely high connection strength, ensure that the internal steel sections and the column as a whole are in synergistic force distribution, and enhance the column's compressive and bending resistance.

[0022] Both ends of the vertical reinforcement 8 are fixed to the web of the internal steel section 6 by welding. The vertical reinforcement 8 and the first longitudinal reinforcement 9 are connected by weld points or tie wires. The function of the vertical reinforcement 8 is to fix both ends of the vertical reinforcement 8 to the web of the internal steel section 6 by welding. This rigid connection method can effectively transfer vertical force, enhance the bending stiffness and shear bearing capacity of the beam, and the welding fixation ensures a tight connection between the vertical reinforcement and the steel section, avoiding the decline in structural performance due to loose connection.

[0023] Two reinforcing hoops 11 are installed on the surface of the internal steel section 4. The reinforcing hoops 11 are fixed to the surface of the internal steel section 4 by welding. The reinforcing hoops 11 can be added or removed according to the actual situation. Their function is to effectively restrain the local deformation of the steel section by welding the reinforcing hoops 11 to the surface of the internal steel section 4, and prevent the steel section from buckling or becoming unstable during the stress process. Especially when the column is subjected to large loads or complex stress, the reinforcing hoops can significantly improve the local stability of the column.

[0024] The reinforcement mechanism 12 includes an upper fixing plate 121 and a lower fixing plate 122 respectively connected to the top and bottom of the steel section 6 inside the beam. A connecting bolt 123 is threaded between the upper fixing plate 121 and the lower fixing plate 122. A fastening nut 124 is threaded on the surface of the connecting bolt 123 at the bottom of the lower fixing plate 122. Multiple fitting grooves 125 are opened at the bottom of the upper fixing plate 121 and the top of the lower fixing plate 122 corresponding to the second longitudinal reinforcement 10. The function of the upper fixing plate 121 and the lower fixing plate 122 is to be connected to the top and bottom of the steel section 6 inside the beam respectively, forming a two-way constraint on the steel section, effectively preventing the steel section from buckling or becoming unstable under stress.

[0025] Multiple studs 13 are connected to the top of the steel sections 6 in both beams. The studs 13 are fixed to the top of the steel sections by welding, and their heads are embedded in the concrete to form a mechanical interlock, which significantly improves the bonding force between the steel sections and the concrete.

[0026] Working principle: The continuous concrete of the column-beam joint is achieved by slotting 2, eliminating the weak links caused by traditional construction joints. The steel sections 4 inside the column are arranged in a cross pattern, and the extended steel plate 5 is inserted into the steel section fitting groove 7 inside the beam to form a mechanical interlock, realizing the rigid connection of the column and beam steel sections, so that the column and beam form an integral force system. The vertical reinforcement 8 is welded to the web of the steel section 6 inside the beam. The first longitudinal reinforcement 9 passes through the steel section 4 inside the column and extends to the steel section 4 inside another beam, forming a spatial truss system, which enhances the bending stiffness of the beam. Then, the second longitudinal reinforcement 10 is fixed to the surface of the steel section 4 inside the column by welding, realizing the stress transfer between the reinforcement and the steel section, and improving the shear bearing capacity of the joint. Then, the connecting bolts 123 and the fastening nuts 124 clamp the steel section inside the beam, restricting the lateral deformation of the steel section under load. The fitting groove 125 fits with the second longitudinal reinforcement 10 to ensure the accurate position of the reinforcement and avoid displacement during pouring, while enhancing the collaborative working ability of the reinforcement and the steel section.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] 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 reinforced concrete column-beam connection structure, comprising a column casting shell (1), characterized in that: The column casting shell (1) has slots (2) on both sides of its top. Beam casting shells (3) are connected to both sides of the slots (2). Two internal column steel sections (4) are connected inside the column casting shell (1) and are arranged in a crisscross pattern. One of the internal column steel sections (4) has an extension steel plate (5) and a beam steel section (6) connected to both sides. One end of the beam steel section (6) has a fitting groove (7) corresponding to the extension steel plate (5), and the extension steel plate (5) is connected to the fitting groove (7). Inside, multiple vertical ribs (8) are connected between the webs of the beam internal steel (6). A first longitudinal rib (9) is connected to one side of the surface of the vertical rib (8). One end of the first longitudinal rib (9) passes through two column internal steels (4) and extends to the web between the webs of another beam internal steel (6). Multiple second longitudinal ribs (10) are connected to the top of both beam internal steels (6). The multiple second longitudinal ribs (10) are fixed to the surface of the column internal steel (4) by welding. A reinforcement mechanism (12) is connected to the surface of the two column internal steels (4).

2. The reinforced concrete column-beam connecting structure according to claim 1, characterized in that: The column and beam are cast as a single unit through the column casting shell (1) and the beam casting shell (3).

3. The reinforced concrete column-beam connection structure according to claim 1, characterized in that: One end of each of the two column internal steel sections (4) is fixed to the steel frame on both sides of the column casting shell (1) by welding, and the extension steel plate (5) and the fitting groove (7) are fixedly connected by bolts and nuts.

4. The reinforced concrete column-beam connection structure according to claim 1, characterized in that: Both ends of the vertical reinforcement (8) are fixed to the web of the inner steel section (6) of the beam by welding, and the vertical reinforcement (8) and the first longitudinal reinforcement (9) are connected by welding points or tie wires.

5. The reinforced concrete column-beam connection structure according to claim 1, characterized in that: Two reinforcing hoops (11) are connected to the surface of the inner steel section (4) of the column. The reinforcing hoops (11) are fixed to the surface of the inner steel section (4) by welding. The reinforcing hoops (11) can be added or reduced according to the actual situation.

6. The reinforced concrete column-beam connection structure according to claim 1, wherein: The reinforcement mechanism (12) includes an upper fixing plate (121) and a lower fixing plate (122) respectively connected to the top and bottom of the internal steel section (6) of the beam. A connecting bolt (123) is threaded between the upper fixing plate (121) and the lower fixing plate (122). A fastening nut (124) is threaded on the surface of the connecting bolt (123) at the bottom of the lower fixing plate (122). Multiple adapter grooves (125) are opened at the bottom of the upper fixing plate (121) and the top of the lower fixing plate (122) corresponding to the second longitudinal reinforcement (10).

7. The reinforced concrete column-beam connection structure according to claim 1, characterized in that: Multiple studs (13) are connected to the top of the two inner steel sections (6) of the beam.

Images