Connection structure of rigid circular tube column and reinforced concrete beam column

Abstract

The present application relates to a connection structure between a rigid circular tubular column and a reinforced concrete beam and column, and to the field of building construction, which includes a circular tubular column, a steel corbel fixed on the circular tubular column, and a steel bar fixed on the circular tubular column, and also includes a lap joint, which is welded and fixed on the steel corbel, and the lap joint is provided with a welding plane parallel to the axis of the steel bar, and the steel bar is welded and fixed on the welding plane. In the present application, the steel corbel is connected to the surrounding reinforced concrete beam and column in the form of a lap joint, which is safe, reliable, reasonable and orderly, and avoids both the perforation of the circular tubular column and the construction inconvenience and quality risks caused by the large-scale use of connector welding.

Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to a connection structure of a rigid circular tube column and a reinforced concrete beam column. Background Art

[0002] Rigid concrete structure is a major form of steel-concrete composite structure, which is a special composite material formed by adding steel sections inside reinforced concrete. Since the steel core is like a skeleton, it can effectively improve the ductility of concrete and greatly improve the seismic performance of concrete; and the lateral constraint of concrete on steel ensures that the mechanical properties of steel can be exerted and it will not be withdrawn from work prematurely due to instability. The circular tube column has been increasingly used in large-span structures and high-rise and super-high-rise buildings in earthquake zones because of its better bearing capacity, stiffness and seismic resistance than steel structures. Therefore, research on rigid circular tube columns, especially the connection nodes between rigid circular tube columns and surrounding reinforced concrete beams and columns, is of great engineering significance.

[0003] In the related art, there are two methods for connecting rigid circular tubular columns with surrounding reinforced concrete beams and columns. One is to connect the steel bars of the surrounding reinforced concrete beams and columns through the rigid circular tubular column body. The other is to connect the rigid circular tubular column and the steel bars by welding the steel bar connector to the rigid circular tubular column. Using the above two connection methods, there are many construction problems in the connection nodes between the rigid circular tubular column and the surrounding reinforced concrete beams and columns: if the steel bar passes through the circular tubular column body, it will weaken the rigidity of the circular tubular column itself, and it is difficult to accurately reserve the opening position; if the steel bar connector is welded on the circular tubular column body on a large scale, there is no space for welding, and the welding quality is difficult to guarantee.

[0004] In view of the above-mentioned related technologies, the inventor believes that it is necessary to provide a new connection structure between a rigid circular tube column and a reinforced concrete beam column. Summary of the invention

[0005] In order to facilitate the construction of the connection nodes between the rigid circular tubular columns and the surrounding reinforced concrete beams and columns and reduce quality risks, the present application provides a connection structure between the rigid circular tubular columns and the reinforced concrete beams and columns.

[0006] The present application provides a connection structure between a rigid circular tube column and a reinforced concrete beam column using the following technical solution:

[0007] A rigid circular tubular column and reinforced concrete beam-column connection structure comprises a circular tubular column, a steel corbel fixed on the circular tubular column and steel bars fixed on the circular tubular column, and is characterized in that it also comprises a lap joint, the lap joint is welded and fixed to the steel corbel, a welding plane parallel to the axis of the steel bar is provided on the lap joint, and the steel bar is welded on the welding plane.

[0008] By adopting the above technical scheme, the lap joint is first welded and fixed on the steel corbel, and then the steel bar is welded and fixed on the welding plane of the lap joint. By welding the lap joint, the installation space on the steel corbel is increased, the steel bar can be welded and fixed on the lap joint more conveniently, the contact area between the steel bar and the lap joint is larger, and the welding area is also larger, which helps to improve the welding quality and connection strength and reduce quality risks.

[0009] Optionally, the steel bars include beam steel bars arranged along the length direction of the steel corbel and column steel bars arranged along the axial direction of the circular tubular column. Multiple beam steel bars are arranged around the steel corbel, and multiple column steel bars are arranged around the circular tubular column. The lap joints include beam surface lap plates and column lap plates. The beam surface lap plates are arranged along the length direction of the steel corbel and the plate surfaces are perpendicular to the side walls of the steel corbel. The column lap plates are arranged along the axial direction of the circular tubular column and the plate surfaces are perpendicular to the side walls of the steel corbel. The plate surfaces of the beam surface lap plates and the column lap plates are the welding planes, and the beam steel bars are welded and fixed to the beam surface lap plates; the column steel bars overlapping the position of the steel corbel are divided into two sections from the steel corbel, and the two sections of column steel bars are respectively welded to the column lap plates on the upper and lower sides of the steel corbel.

[0010] By adopting the above technical scheme, the beam surface lap plate is fixed on the steel corbel, and then the beam reinforcement is welded and fixed to the beam surface lap plate. The beam surface lap plate increases the installation surface on the steel corbel, which can facilitate the welding and fixing of the beam reinforcement and help improve the welding quality. When the beam reinforcement is densely distributed, both side plates of the beam surface lap plate can be used as welding planes, and the welding complementary interference of the beam reinforcement on both sides of the beam surface lap plate can be suitable for beam reinforcement fixation under different circumstances. The column reinforcement that coincides with the steel corbel position is cut off, and then the column lap plate is used to connect the column reinforcement and the steel corbel. While avoiding the column reinforcement passing through the steel corbel to reduce the strength of the steel corbel, it can effectively ensure the connection strength of the column reinforcement and ensure the strength of the reinforced concrete structure.

[0011] Optionally, it also includes a connector welded and fixed on the circular tube column, the steel corbel is an H-shaped corbel, the beam steel bars located on both sides of the steel corbel are side steel bars, the side steel bars are fixed to the circular tube column through the connector, and one end of the connector close to the circular tube column is processed into an inner concave arc surface that fits the circular tube column.

[0012] By adopting the above technical scheme, there are flange plates on the upper and lower sides of the H-shaped corbel, and no plate body on both sides. Some of the side steel bars located on the edge of the steel corbel will be far away from the steel corbel, and the side steel bars are inconvenient to be welded on the beam surface lap plate. The side steel bars can be conveniently fixed to the round tube column by using a connector. Only the side steel bars are fixed with a connector, and the installation space is sufficient, the installation difficulty is low, and the construction quality is easy to ensure; the welding and fixing ends of the connector and the round tube column are processed into an inwardly concave arc surface, so that the connector and the round tube column fit tightly, so that the connector can be more firmly welded to the round tube column.

[0013] Optionally, the beam reinforcement above the steel corbel is fixed to the steel corbel via a beam surface lap plate, and the beam reinforcement below the steel corbel is welded to the steel corbel.

[0014] By adopting the above technical scheme, the size of the steel corbel is generally smaller than that of the concrete beam, the position of the beam reinforcement is set according to the contour of the concrete beam, the beam reinforcement above the steel corbel is fixed with the beam surface lap plate, and the height of the beam reinforcement above the steel corbel can be adjusted by adjusting the welding position to meet the construction needs; since the position of the beam reinforcement above the steel corbel can be adjusted to meet the construction needs, the beam reinforcement below the steel corbel can be directly welded and fixed to the steel corbel, eliminating the need to weld the beam surface lap plate, the construction speed is also faster, and the construction difficulty is reduced.

[0015] Optionally, the lap joint also includes a Y-shaped lap plate, which is a Y-shaped frame formed by welding two plates, one long and one short. The beam steel bars located on both sides of the steel corbels are side steel bars. When the two steel corbels cross, the two plates of the Y-shaped lap plate are respectively welded and fixed to the edges of the two steel corbels, and the side steel bars corresponding to the two steel corbels are respectively fixed to the two plates of the Y-shaped lap plate.

[0016] By adopting the above technical solution, when two steel corbels cross, the side steel bars are fixed with connectors, which will cause the side steel bars to cross, and the installation space of the connector is difficult to guarantee. By setting a Y-shaped lap plate, the side steel bars are welded and fixed on the Y-shaped lap plate, which can fix the side steel bars while avoiding the crossing of the side steel bars.

[0017] Optionally, the end of the beam surface lap plate is welded to the circular tube column, and the side of the beam surface lap plate is welded to the steel corbel.

[0018] By adopting the above technical solution, the beam surface lap plate is fixed to the steel corbel, and the beam surface lap plate is fixed to the circular tube column, ensuring that the beam surface lap plate is firmly fixed, thereby ensuring that the beam reinforcement is firmly fixed.

[0019] Optionally, the circular tube column is expanded outwardly at the installation position of the steel corbel and is provided with a concrete enlarged head, annular stirrups are embedded in the enlarged head, and the steel corbel is embedded in the enlarged head.

[0020] By adopting the above technical solution, when the steel corbels are densely distributed, an enlarged head optimization structure is provided.

[0021] Optionally, the width direction of the column lap plate is consistent with the width direction of the corresponding steel corbel, and the column steel bars are welded on a side of the column lap plate away from the circular tube column.

[0022] By adopting the above technical solution, the column lap plate is firmly fixed and there is enough welding space between the column reinforcement and the column lap plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] By fixing the lap joint on the steel corbel, the installation space on the steel corbel is increased, and the steel bars can be welded and fixed to the steel corbel more conveniently, which helps to improve the welding quality, reduce the construction difficulty, reduce the quality risks, and make the construction process more efficient and orderly;

[0025] By setting a column lap plate to connect the column reinforcement and the steel corbel, when the column reinforcement and the steel corbel are in the same position, it is not necessary to pass the column reinforcement through the steel corbel, thus avoiding perforation to reduce the strength of the steel corbel. The column reinforcement is welded to the column lap plate, which is welded to the steel corbel, and the connection between the column reinforcement and the steel corbel is firm and reliable.

[0026] By setting a Y-shaped lap plate at the intersection of two steel corbels, workers can weld the side steel bars at the same horizontal position, avoiding the steel bars from being in poor contact with each other, which helps to improve the overall project quality. At the same time, there is enough welding space between the side steel bars and the Y-shaped lap plate, which reduces the installation difficulty and makes it easy to ensure the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0028] Figure 2 yes Figure 1 A magnified schematic diagram of the middle A area;

[0029] Figure 3 yes Figure 1 A schematic diagram of a top view structure;

[0030] Figure 4 It is a schematic diagram of the structure of the enlarged head in the embodiment of the present application;

[0031] Figure 5 yes Figure 4 Schematic diagram of the BB cross-section structure.

[0032] Figure numerals: 1. Circular tube column; 2. Column reinforcement; 3. Steel corbel; 4. Beam reinforcement; 41. Side reinforcement; 5. Column lap plate; 6. Beam surface lap plate; 7. Y-shaped lap plate; 8. Connector; 9. Bolt; 10. Enlarged head; 11. Annular reinforcement; 12. Vertical reinforcement. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] Reference Figure 1 The embodiment of the present application discloses a rigid circular tube column and reinforced concrete beam-column connection structure, comprising a vertically arranged circular tube column 1, a steel corbel 3 fixed on the circular tube column 1, and steel bars fixed on the circular tube column 1 and the steel corbel 3. The circular tube column 1 is a hollow cylindrical column, and bolts 9 are welded on the circumference of the circular tube column 1; the steel corbel 3 is an H-shaped corbel, and the steel corbel 3 is fixed on the circumference of the circular tube column 1 by bolts, and a plurality of steel corbels 3 are fixed on the circumference of the circular tube column 1; the steel bars include column steel bars 2 arranged along the axial direction of the circular tube column 1 and beam steel bars 4 arranged along the length direction of the steel corbel 3, the column steel bars 2 are arranged around the circular tube column 1 to reinforce the concrete column structure, and the beam steel bars 4 are arranged around the steel corbel 3 to reinforce the concrete beam structure.

[0035] The steel bars and the round tube column 1, and the steel bars and the steel bracket 3 are connected by lap joints. Figure 1 and Figure 2 The lap joints include column lap plates 5, beam surface lap plates 6 and Y-shaped lap plates 7. The column lap plates 5 and beam surface lap plates 6 are both rectangular plates, and the Y-shaped lap plate 7 is a Y-shaped frame formed by splicing and welding two rectangular plates, one long and one short.

[0036] refer to Figure 2 and Figure 3 , the column lap plate 5 is parallel to the axis of the column reinforcement 2, the ends of the column lap plate 5 are welded and fixed on the upper and lower side flange plates of the steel corbel 3, and the width direction of the column lap plate 5 is consistent with the width direction of the corresponding steel corbel 3. In the circumferential direction of the circular tube column 1, the column reinforcement 2 that coincides with the steel corbel 3 is cut into two sections, and the ends of the two sections of column reinforcement 2 are respectively welded on the column lap plate 5 of the upper and lower side flange plates of the steel corbel 3, and the two sections of column reinforcement 2 are coaxially arranged. The number of column lap plates 5 on the steel corbel 3 is set according to the number of column reinforcements 2 within the range of the steel corbel 3.

[0037] refer to Figure 2 and Figure 3, the beam surface lap plate 6 is parallel to the axis of the beam reinforcement 4, and the beam surface lap plate 6 is arranged on the upper flange plate of the steel corbel 3, the beam surface lap plate 6 is perpendicular to the upper flange plate of the steel corbel 3, the end of the beam surface lap plate 6 is welded to the circular tube column 1, and the side of the beam surface lap plate 6 is welded to the steel corbel 3. During construction, the beam reinforcement 4 can be multiple beam reinforcements 4 arranged around the steel corbel 3, or two beam reinforcements 4 can be in a row, and multiple rows of beam reinforcements 4 are arranged around the steel corbel 3, and the beam reinforcements 4 in the same row can be welded to the side wall on the same side of the beam surface lap plate 6; the number of beam surface lap plates 6 is set according to the number and number of rows of beam reinforcements 4 above the steel corbel 3. When the distance between two rows or two beam reinforcements 4 is too close, the beam reinforcements 4 can be welded on both sides of the same beam surface lap plate 6. The middle part of the bottom beam reinforcement 4 of the steel corbel 3 is directly welded to the bottom flange plate of the steel corbel 3. If the beam reinforcement 4 is arranged in a row of two, the two beam reinforcements 4 in a row are respectively welded to the upper and lower sides of the bottom flange plate of the steel corbel 3.

[0038] refer to Figure 2 and Figure 3 , the beam reinforcement 4 on both sides of the steel corbel 3 is called the side reinforcement 41, and the side reinforcement 41 is fixed to the circular tube column 1 through the connector 8; the end of the connector 8 is processed into an inner concave arc surface that fits the circular tube column 1, so that the connector 8 and the circular tube column 1 are fully in contact, and the connection is more secure. When two steel corbels 3 cross, there is a lack of space to install two connectors 8 at the same time, or the side reinforcement 41 corresponding to the two steel corbels 3 will interfere with and cross each other. At this time, the Y-shaped lap plate 7 is set between the two steel corbels 3, and the two plates of the Y-shaped steel corbel 3 are respectively welded to the edges of the two steel corbels 3, and the end of the Y-shaped lap plate 7 is welded to the circular tube column 1, and the side reinforcement 41 corresponding to the two steel corbels 3 is welded and fixed to the plate body corresponding to the Y-shaped lap plate 7.

[0039] refer to Figure 4 and Figure 5 Finally, C50 fine stone concrete with self-compacting effect is used for concrete pouring. If the reinforced corbels are dense at the beam-column joints, a concrete enlarged head 10 can be used: the cylindrical column 1 is expanded 500mm outward to form an enlarged head 10, which is equipped with annular stirrups. The annular stirrups are steel reinforcements composed of circular steel bars 11 and C-shaped vertical steel bars 12.

[0040] The implementation principle of a rigid circular tube column and reinforced concrete beam-column connection structure disclosed in an embodiment of the present application is as follows: by welding lap joints on the steel corbels 3, the installation space on the steel corbels 3 is increased, and various types of steel bars are conveniently welded and fixed to the steel corbels 3; the beam steel bars 4 can be more conveniently welded to the sides of the beam surface lap plates 6, with a larger operating space and reduced welding difficulty, which helps to improve the welding quality and reduce quality risks. Since the welding space is increased, the construction sequence can be more reasonably set; the column steel bars 2 that coincide with the steel corbels 3 do not need to pass through the steel corbels 3, so the strength of the steel corbels 3 is improved. After the column steel bars 2 are cut off, the contact area between the end and the column lap plate 5 is larger, and it is also extremely strong after welding; for the crossed steel corbels 3, the side steel bars 41 can be fixed by the Y-shaped lap plates 7, which avoids the crossing of steel bars while ensuring the connection strength, and the project quality is better.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rigid circular tubular column and reinforced concrete beam-column connection structure, comprising a circular tubular column (1), a steel bracket (3) fixed to the circular tubular column (1), and steel bars fixed to the circular tubular column (1), characterized in that: It also includes a lap joint, which is welded and fixed on the steel bracket (3), and a welding plane parallel to the axis of the steel bar is provided on the lap joint, and the steel bar is welded on the welding plane; The steel bars include beam steel bars (4) arranged along the length direction of the steel corbel (3) and column steel bars (2) arranged along the axial direction of the circular tubular column (1); a plurality of beam steel bars (4) are arranged around the steel corbel (3); a plurality of column steel bars (2) are arranged around the circular tubular column (1); the lap joints include beam surface lap plates (6) and column lap plates (5); the beam surface lap plates (6) are arranged along the length direction of the steel corbel (3) and the plate surface is perpendicular to the side wall of the steel corbel (3); The column lap plate (5) is arranged along the axial direction of the circular tube column (1) and the plate surface is perpendicular to the side wall of the steel corbel (3); the plate surfaces of the beam surface lap plate (6) and the column lap plate (5) are the welding planes; the beam reinforcement (4) is welded and fixed on the beam surface lap plate (6); the column reinforcement (2) overlapping the steel corbel (3) is divided into two sections from the steel corbel (3); the two sections of the column reinforcement (2) are respectively welded to the column lap plates (5) on the upper and lower sides of the steel corbel (3); The circular tube column (1) is provided with a concrete enlarged head (10) which is expanded outward at the installation position of the steel corbel, an annular stirrup is embedded in the enlarged head (10), and the steel corbel (3) is embedded in the enlarged head (10).

2. The rigid circular tube column and reinforced concrete beam-column connection structure according to claim 1, characterized in that: It also includes a connector (8) welded and fixed on the circular tubular column (1), the steel bracket (3) is an H-shaped bracket, the beam reinforcement (4) located on both sides of the steel bracket (3) is a side reinforcement (41), and the side reinforcement (41) is fixed to the circular tubular column (1) through the connector (8), and one end of the connector (8) close to the circular tubular column (1) is processed into an inner concave arc surface that fits the circular tubular column (1).

3. The rigid circular tube column and reinforced concrete beam-column connection structure according to claim 2, characterized in that: The beam reinforcement (4) located above the steel corbel (3) is fixed to the steel corbel (3) via a beam surface lap plate (6), and the beam reinforcement (4) below the steel corbel (3) is welded to the steel corbel (3).

4. The rigid circular tube column and reinforced concrete beam-column connection structure according to claim 1, characterized in that: The lap joint also includes a Y-shaped lap plate (7), which is a Y-shaped frame formed by welding two plates, one long and one short. The beam reinforcements (4) located on both sides of the steel brackets (3) are side reinforcements (41). When the two steel brackets (3) cross, the two plates of the Y-shaped lap plate (7) are respectively welded and fixed to the edges of the two steel brackets (3), and the side reinforcements (41) corresponding to the two steel brackets (3) are respectively fixed to the two plates of the Y-shaped lap plate (7).

5. The rigid circular tube column and reinforced concrete beam-column connection structure according to claim 1, characterized in that: The end of the beam surface lap plate (6) is welded to the circular tube column (1), and the side of the beam surface lap plate (6) is welded to the steel bracket (3).

6. The rigid circular tube column and reinforced concrete beam-column connection structure according to claim 1, characterized in that: The width direction of the column lap plate (5) is consistent with the width direction of the corresponding steel corbel (3), and the column steel bars (2) are welded to a side of the column lap plate (5) away from the circular tube column (1).

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