Beam column joint structure

Abstract

The utility model discloses a beam-column joint structure, the joint comprises a column section and a cantilever which are cast into a whole by reinforced concrete, the cantilever comprises a steel rib beam which is horizontally arranged inside, the steel rib beam is connected on column section steel or longitudinally arranged on a section steel section in the column section, and the steel rib beam is connected with the column section steel or longitudinally arranged on the section steel section in the column section. A gap is formed in the horizontal surface or the longitudinal surface of the steel rib beam and used for allowing stirrups of the column sections to penetrate through or additional ribs for fixing the stirrups to penetrate through. The beam-column joint adopts a prefabricated reinforced concrete structure or a prefabricated steel reinforced concrete structure, the cantilever adopts a steel reinforced concrete structure, and the end part of the steel rib beam in the cantilever is transversely provided with a gap for the stirrup to pass through or is longitudinally provided with a through hole for the additional rib to pass through, so that the additional rib is welded and fixed with the corresponding stirrup; therefore, the problem that the stirrup and the steel rib beam intersect and conflict is solved.

Description

Technical Field

[0001] The utility model relates to a beam-column node structure. Background Art

[0002] The stress at the reinforced concrete beam-column joint is relatively concentrated, and it is the weak link in the frame structure. There are many steel bars at the joint, including the main bars, supporting bars, and stirrups of the beams and columns, which are staggered at the joint. In the prefabricated structure, the beam-column joint components or beams are prefabricated and assembled on site. The beam-column joint structure usually includes a cantilever, which is used to assemble with the prefabricated beam components. The cantilever usually includes H-shaped steel, which is embedded in the column of the beam-column joint. The Chinese utility model patent with announcement number CN219137995U discloses a steel-concrete beam-column joint connection structure. The disadvantage is that the size of the H-shaped steel is generally large, and there are many intersections between the H-shaped steel and the steel bars in the concrete structure. How to deal with the intersection of the H-shaped steel and the column and beam steel bars is a construction difficulty. Summary of the invention

[0003] In view of the above shortcomings, the purpose of the utility model is to provide a beam-column node structure with reasonable reinforcement layout.

[0004] To this end, the utility model provides a beam-column node structure, the node includes a column section and a cantilever cast as an integral whole with reinforced concrete, the cantilever includes a steel frame beam arranged horizontally inside, the steel frame beam is connected to the column steel or a steel section arranged longitudinally in the column section, the steel frame beam is provided with a gap on the horizontal surface or the longitudinal surface, the gap is used for the passage of stirrups of the column section or the passage of additional bars for fixing the stirrups.

[0005] Furthermore, one end of the steel beam connected to the column section is provided with one or more longitudinally distributed connecting rods, and the distance between adjacent connecting rods allows stirrups to pass through.

[0006] Furthermore, the main body of the steel beam is an H-shaped steel, the connecting rod of the steel beam is connected in the column section, and the width of the connecting rod is smaller than the width of the steel beam in the cantilever.

[0007] Furthermore, the steel frame beam includes a transition section, the connecting rod is arranged in the steel bar configuration area of ​​the column section, the transition section is arranged between the steel bar configuration area and the column section surface, the two ends of the transition section are respectively connected to the connecting rod and the H-shaped steel, and the wing plate is arranged in the cantilever.

[0008] The wing plates of the steel beam are provided with longitudinal through holes, through which additional ribs are passed, the ends of the stirrups between the wing plates are fixed to the additional ribs, and the additional ribs pass through the wing plates and are fixed to the stirrups outside the wing plates.

[0009] The stirrups of the node are provided with a plurality of additional longitudinal reinforcements, and the additional longitudinal reinforcements and the stirrups form a positioning device for the node beam and column reinforcements.

[0010] Furthermore, it also includes beam main reinforcement, which is arranged on the outside of the steel beam and passes through the column section.

[0011] Furthermore, a portion of the main reinforcement of the beam and the steel beam protrudes out of the concrete cantilever, the beam section steel of the main beam is fixed to the steel beam by high-strength bolts, the beam section steel and the wing plate of the steel beam are connected by energy-absorbing pad bolts, the main reinforcement of the beam is fixed to the beam steel bar, and the joint of the cantilever and the main beam is connected by pouring concrete on site.

[0012] Furthermore, it also includes reinforcing ribs or reinforcing plates, and the reinforcing ribs or reinforcing plates are welded to the web of the steel beam.

[0013] The beneficial technical effects of the utility model are:

[0014] (1) The beam-column joint of the utility model adopts a prefabricated reinforced concrete structure or a prefabricated steel-concrete structure, and the cantilever adopts a steel-concrete structure. The end of the steel beam in the cantilever is provided with a gap in the horizontal direction for the stirrups to pass through, or a through hole in the longitudinal direction for the additional reinforcement to pass through and the additional reinforcement is welded and fixed to the corresponding stirrups, thereby solving the construction problem of the intersection of the stirrups and the steel beam.

[0015] (2) In the specific embodiment of the present invention, additional longitudinal reinforcement is fixed to the stirrups. The additional longitudinal reinforcement, additional reinforcement and stirrups are fixed to form a whole, which reduces the problem of reduced strength of the stirrups between the flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model;

[0017] Figure 2 It is a top view schematic diagram of the layout of the steel bars and steel beams in Implementation 1;

[0018] Figure 3 A schematic diagram of the connection between the beam-column node and the main beam in Example 1;

[0019] Figure 4 is a schematic diagram of a steel beam in Example 2;

[0020] Figure 5 This is a schematic top view of the steel beam of Example 2.

[0021] Explanation of the reference numerals: 1. column section; 2. cantilever; 3. steel beam; 301. wing plate; 302. through hole; 303. transition section; 304. connecting rod; 305. web; 4. steel section; 5. column main reinforcement; 6. beam main reinforcement; 7. stirrups; 8. additional reinforcement; 9. additional longitudinal reinforcement; 10. main beam. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] Reference Figures 1 to 5 As shown, a beam-column node structure of the utility model comprises a column section 1 cast as a whole by reinforced concrete and a cantilever 2 connected to the column section 1, the cantilever 2 comprises a steel beam 3 arranged horizontally inside, the steel beam 3 is connected to the column steel or longitudinally arranged on the steel section 4 in the column section 1, and the steel beam 3 is provided with a gap on the horizontal surface or the longitudinal surface, and the gap is used for the passage of the stirrup 7 of the column section 1 or the passage of the additional reinforcement 8 for fixing the stirrup 7. The above-mentioned node can adopt a prefabricated structure, and the prefabricated column can adopt a steel concrete prefabricated column or a reinforced concrete prefabricated column. When the steel concrete prefabricated column is adopted, the steel beam 3 in the cantilever 2 can be directly connected and fixed with the column steel, and when the reinforced concrete prefabricated column is adopted, the steel section 4 is longitudinally embedded in the column section 1 of the node, and the steel beam 3 can be integrally formed with the steel section 4 to form a T-shaped structure or the steel beam 3 is connected to the middle of the steel section 4 by welding. The steel section 4 is made of H-shaped steel or channel steel. The main body of the steel beam 3, that is, the part arranged in the cantilever 2, is hot-rolled H-shaped steel. The flanges 301 of the H-shaped steel of the steel beam 3 are arranged on the upper and lower sides of the cantilever 2. The cantilever 2 is a concrete structure. The cantilever 2 is provided with main beam reinforcements 6. The main beam reinforcements 6 are arranged on the outside of the steel beam 3. The main beam reinforcements 6 of this embodiment do not pass through or connect through the steel section 4, but pass through the outside of the steel section 4 as a whole. If multiple main beam reinforcements 6 are provided, they can also be welded or connected to the steel section 4. The steel beam 3 and the main beam reinforcements 6 protrude from the surface of the concrete for assembly connection with the main beam 10. The structure of the main beam 10 is similar to that of the cantilever 2. The main beam 10 is connected to the web 305 of the H-shaped steel of the cantilever 2 by a connecting plate and high-strength bolts. The main beam 10 and the flanges 301 of the cantilever 2 are connected by energy-absorbing pads and high-strength bolts. The steel bars of the main beam and the cantilever 2 are fixed by welding or threaded pipe connection. Refer to Figure 1 , Figure 2 and Figure 3As shown, in Example 1 of the utility model, a steel section 4 integrally formed with the H-steel of the cantilever 2 is pre-embedded in the column section 1, and the design of the column main reinforcement 5 of the reinforced concrete column reserves a space for the H-steel to pass through. The H-steel of the steel beam is directly connected to the steel section, and the column main reinforcement 5 avoids the wing plate 301 of the steel beam 3. The stirrups 7 of the column main reinforcement 5 at the node are fixed to a plurality of additional longitudinal reinforcements 9 arranged longitudinally by welding. The additional longitudinal reinforcements 9 can locate the relative positions between the stirrups 7, and the position of the column main reinforcement 5 is located by tying with the column main reinforcement 5. The beam main reinforcement 6 is inserted into the combined structure of the additional longitudinal reinforcement 9 and the stirrups 7 and tied, which also realizes the positioning of the beam main reinforcement 6. The combined structure of the additional longitudinal reinforcement 9 and the stirrups 7 actually forms a positioning structure for the node reinforcement, so that the crossing of the reinforcement is more orderly. The steel frame beam 3 of the cantilever 2 extends from the inside of the column section 1 to the cantilever 2, and the web 305 of the H-shaped steel crosses and conflicts with the stirrups 7 of the main reinforcement 5 of the node column. The prior art usually provides corresponding holes on the web for the stirrups 7 to pass through. This method will reduce the strength of the web. In Example 1, a through hole 302 is provided in the wing plate 301 of the H-shaped steel, and the additional reinforcement 8 passes through the through hole 302 and is welded and fixed to the end of the stirrup 7 between the wing plate 301. The additional reinforcement 8 and the stirrups 7 on both sides of the wing plate 301 are also fixed by welding to form a whole, which can form a steel skeleton with the main reinforcement of the column.

[0024] Reference Figure 4 and Figure 5 As shown, the embodiment 2 of the utility model is basically the same as the embodiment 1, except that one end of the steel beam 3 connected to the column section 1 is provided with one or more longitudinally distributed connecting rods 304, and the distance between adjacent connecting rods 304 allows the stirrups 7 to pass through. In the embodiment 2, one end of the H-shaped steel connected to the steel section 4 is transformed into a plurality of connecting rods 304 connected to the steel section 4. In order to meet the strength of the connection between the node and the beam, the thickness of the connecting rod 304 can be selected to be thicker than the web of the H-shaped steel, or the strength can be improved by welding reinforcing ribs. In the above embodiment 1, the strength can also be improved by welding reinforcing ribs or reinforcing plates on the web.

[0025] In the above-mentioned embodiment 2, the connecting rod 304 of the steel beam 3 is connected in the column section 1, and the width of the connecting rod 304 is smaller than the width of the H-shaped steel in the cantilever 2, the purpose of which is to reduce the occupied space and avoid conflicts with the node reinforcement layout. The steel beam 3 also includes a transition section 303, the connecting rod 304 is arranged in the reinforcement configuration area of ​​the column section 1, the outer side of the reinforcement configuration area is a concrete protective layer, the transition section 303 is arranged between the reinforcement configuration area and the surface of the column section 1, that is, in the concrete protective layer, the two ends of the transition section 303 are respectively connected to the connecting rod 304 and the H-shaped steel, and the wing plate 301 is arranged in the cantilever 2, the wing plate 301 increases the contact area between the H-shaped steel and the concrete of the cantilever 2, which is beneficial to improve the longitudinal shear strength of the cantilever 2.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A beam-column node structure, the node comprising a column section and a cantilever cast as a whole by reinforced concrete, characterized in that: The cantilever includes a steel frame beam arranged horizontally inside, which is connected to the column steel or the steel section arranged longitudinally in the column section. The steel frame beam is provided with a gap on the horizontal surface or the longitudinal surface, and the gap is used for the stirrups of the column section or the additional bars for fixing the stirrups to pass through.

2. A beam-column node structure according to claim 1, characterized in that: One end of the steel beam connected to the column section is provided with one or more longitudinally distributed connecting rods, and the distance between adjacent connecting rods allows stirrups to pass through.

3. A beam-column node structure according to claim 2, characterized in that: The main body of the steel beam is H-shaped steel, the connecting rod of the steel beam is connected in the column section, and the width of the connecting rod is smaller than the width of the steel beam in the cantilever.

4. A beam-column node structure according to claim 3, characterized in that: The steel frame beam includes a transition section, the connecting rod is arranged in the steel bar configuration area of ​​the column section, the transition section is arranged between the steel bar configuration area and the column section surface, the two ends of the transition section are respectively connected to the connecting rod and the H-shaped steel, and the wing plate of the H-shaped steel is arranged in the cantilever.

5. The beam-column node structure according to claim 1, characterized in that: The wing plates of the steel beam are provided with longitudinal through holes, through which additional ribs are passed, the ends of the stirrups between the wing plates are fixed to the additional ribs, and the additional ribs pass through the wing plates and are fixed to the stirrups outside the wing plates.

6. A beam-column node structure according to claim 5, characterized in that: The stirrups of the node are provided with a plurality of additional longitudinal reinforcements, and the additional longitudinal reinforcements and the stirrups form a positioning device for the node beam and column reinforcements.

7. A beam-column node structure according to any one of claims 1 to 6, characterized in that: It also includes beam main reinforcement, which is arranged on the outside of the steel beam and passes through the column section.

8. The beam-column node structure according to claim 7, characterized in that: The main reinforcement of the beam and a part of the steel beam protrude out of the concrete cantilever, the beam section steel of the main beam is fixed to the steel beam by high-strength bolts, the wing plate of the beam section steel and the steel beam is connected by energy-absorbing pad bolts, the main reinforcement of the beam is fixed to the beam steel bar, and the joint of the cantilever and the main beam is connected by pouring concrete on site.

9. A beam-column node structure according to claim 8, characterized in that: It also includes reinforcing ribs or reinforcing plates, which are welded to the web of the steel beam.

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