Box column and cantilever beam connecting structure

Abstract

The application belongs to the technical field of building engineering and discloses a box column and overhanging beam connecting structure, which comprises a box column and an overhanging beam node, the box column comprises vertically arranged H-shaped steel, corresponding side edges of two flanges of the H-shaped steel are connected with connecting plates, one side edge of the two connecting plates is aligned with one flange of the H-shaped steel, and the other side edge protrudes from the other flange of the H-shaped steel, a T-shaped steel is arranged on the flange of the H-shaped steel between the two connecting plates, the web of the T-shaped steel is located in a vertical plane as a whole, and one side plate edge of the web, which is away from the flange, is connected with the flange of the H-shaped steel, and a plurality of inner partition plates are further arranged on both sides of the web of the T-shaped steel. The box column structure has the advantages of easy connection of the H-shaped steel and large bidirectional bending stiffness of the box column, the shear stiffness and the torsional performance of the node area are enhanced, the stress concentration problem is avoided, and the bearing capacity and the seismic performance of the node are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a connection structure between a box column and an overhanging beam. Background Technology

[0002] In the field of steel structure construction, box columns are widely used in multi-story and high-rise buildings, large-span structures, and industrial plants due to their excellent bending stiffness and load-bearing capacity in both principal axes. The connection nodes between box columns and beams are critical parts for load transfer, and their design rationality directly affects the safety, stability, and economy of the entire structure.

[0003] Traditional box columns are typically welded from four steel plates to form a closed box section. While this structure offers good overall integrity, it presents significant limitations when connecting to beams in multiple directions, especially at joints where cantilever beams need to be connected. Firstly, the closed section of the box column makes efficient use of internal space and welding of internal stiffeners extremely difficult, often requiring complex methods such as through-plate connections or bolted connections. This leads to complex manufacturing processes, a large welding workload, and high difficulty in quality control. Secondly, the flat walls of traditional box columns result in significant stress concentration at joints when beams are directly connected to their outer surfaces, hindering flexible arrangement and reliable anchoring of beams in multiple directions. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a connection structure between a box-type column and an overhanging beam.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a box-shaped column and an overhanging beam connection structure, comprising a box-shaped column and an overhanging beam node disposed on the outer periphery of the box-shaped column. The box-shaped column includes vertically arranged H-beams. Connecting plates are connected to the corresponding sides of the two flanges of the H-beams. One side of the two connecting plates is aligned with one flange of the H-beam, and the other side protrudes from the other flange of the H-beam. A T-beam is disposed on the flange of the H-beam located between the two connecting plates. The web of the T-beam is entirely located in a vertical plane, and the side of the web away from the flange is connected to the flange of the H-beam. Several inner partitions are also disposed on both sides of the web of the T-beam. The sides of the inner partitions are fixedly connected to the web, flange, and flange of the T-beam, respectively.

[0006] Furthermore, the web of the H-beam is connected to the connecting plate by electroslag welding with several reinforcing plates.

[0007] Furthermore, the cantilever beam node includes a first node, a second node, a third node, and a fourth node. The first node and the third node are respectively disposed on two connecting plates, the second node is disposed on the flange of the H-beam aligned with the connecting plate, and the fourth node is disposed on the flange of the T-beam.

[0008] Furthermore, the first node is an I-beam structure, the end face of the I-beam of the first node is welded to the surface of the connecting plate, and the web of the I-beam is located in the vertical direction. Several first reinforcing bar sleeves are provided on the upper flange of the I-beam of the first node near the connecting plate.

[0009] Furthermore, the connecting plate corresponding to the first node is provided with steel reinforcement transition node plates on both the upper and lower sides of the first node.

[0010] Furthermore, the second node is an irregularly shaped I-beam structure. The end face of the I-beam of the second node is welded to the corresponding H-beam flange. The web of the I-beam is located in the vertical direction. The upper and lower flanges of the I-beam of the second node are bent downwards from the H-beam flange. Several second reinforcing bar sleeves are provided on the side of the upper flange of the I-beam of the second node near the connecting plate.

[0011] Furthermore, the third node is an irregularly shaped I-beam structure. The end face of the I-beam of the third node is welded to the corresponding connecting plate, and the web of the I-beam is located in the vertical direction. The upper flange of the I-beam of the third node is bent downward from the connecting plate, and several third reinforcing bar sleeves are provided on the side of the upper flange adjacent to the connecting plate.

[0012] Furthermore, the fourth node is an I-beam structure, with the end face of the I-beam of the fourth node welded to the corresponding T-beam flange, and the web of the I-beam located in the vertical direction. The upper flange of the I-beam of the fourth node is aligned with the upper edge of the T-beam flange.

[0013] In summary, this utility model has the following beneficial effects: In this application, vertically arranged H-beams are used as the load-bearing foundation, and a protruding irregular connecting plate is welded to the outside of its flange, forming a box-type structure together with the H-beams. The overall structure is simple and easy to manufacture. This structure combines the advantages of easy connection of H-beams and the high bidirectional bending stiffness of box columns; furthermore, by setting T-beams and internal partitions, the shear stiffness and torsional performance of the joint area are greatly enhanced, forming a clear and efficient internal force transmission path, effectively avoiding the stress concentration problem in the joint area of ​​traditional closed box columns, and significantly improving the load-bearing capacity and seismic performance of the joint. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the overall structure from another angle of an embodiment of the present utility model; Figure 3 This is a structural schematic diagram of the box-shaped column according to an embodiment of the present invention.

[0015] In the diagram: 10. Box column; 11. H-beam; 12. Connecting plate; 13. T-beam; 14. Reinforcing plate; 20. First node; 21. First rebar sleeve; 22. Rebar transition node plate; 30. Second node; 31. Second rebar sleeve; 40. Third node; 41. Third rebar sleeve; 50. Fourth node. Detailed Implementation

[0016] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0017] like Figure 1-3 As shown in the embodiment of this application, a box-shaped column and cantilever beam connection structure is disclosed, including a box-shaped column 10 and cantilever beam nodes disposed on the outer periphery of the box-shaped column 10. The box-shaped column 10 includes vertically arranged H-beams 11. Each of the corresponding sides of the two flanges of the H-beam 11 is connected to a connecting plate 12. One side of the two connecting plates 12 is aligned with one flange of the H-beam 11, and the other side protrudes from the other flange of the H-beam 11. A T-beam 13 is disposed on the flange of the H-beam 11 located between the two connecting plates 12. The web of the T-beam 13 is entirely located in a vertical plane, and the side of the web away from the flange is connected to the flange of the H-beam 11. Several inner partitions are also disposed on both sides of the web of the T-beam 13. The edges of the inner partitions are fixedly connected to the web, flange, and flange of the T-beam 13, respectively. Through the combined design of H-beam 11, connecting plate 12, T-beam 13, and inner diaphragm, a composite structure with excellent load-bearing performance is constructed. This structure combines the advantages of easy connection of H-beam 11 and high bidirectional bending stiffness of box column 10. The connecting plate 12 is aligned with the flange of H-beam 11 on one side and protrudes on the other, expanding the installation space of the cantilever beam joint while ensuring the continuity of the box column 10 section. This avoids local weakening of the column due to joint settings, improving the overall compressive strength of the column and making it suitable for high-load building scenarios. The connection between the web of T-beam 13 and the flange of H-beam 11 distributes the cantilever beam load to the entire box column 10, and the inner diaphragm further strengthens the joint stiffness, forming a clear and efficient internal force transmission path. This effectively avoids the stress concentration problem in the joint area of ​​traditional closed box column 10, significantly improving the load-bearing capacity and seismic performance of the joint.

[0018] To ensure the overall structural strength of the box-type column 10, several reinforcing plates 14 are welded between the web of the H-beam 11 and the connecting plate 12 via electroslag welding. The reinforcing plates 14 fill the gap between the web of the H-beam and the connecting plate 12, forming a rigid connection node, significantly enhancing the local stiffness and shear capacity of the column in this critical area. The reinforcing plates 14 also disperse the local stress on the web of the H-beam 11, preventing buckling deformation of the web under load, ensuring a smoother transition of the load transmitted by the connecting plate 12 to the H-beam 11, and ensuring the overall stability of the box-type column 10. This makes it suitable for industrial buildings subjected to long-term dynamic loads. The cantilever beam joints include a first node 20, a second node 30, a third node 40, and a fourth node 50. The first node 20 and the third node 40 are respectively located on the two connecting plates 12. The second node 30 is located on the flange of the H-beam 11 aligned with the connecting plate 12. The fourth node 50 is located on the flange of the T-beam 13. These four nodes can be used to connect beams in different directions, allowing for flexible connection of cantilever beams with different directions and loads according to the building's beam layout requirements. This enhances the flexibility of the structural design and the adaptability of the building's functions.

[0019] Specifically, the first node 20 is an I-beam structure. The end face of the I-beam of the first node 20 is welded to the surface of the connecting plate 12, and the web of the I-beam is located vertically. Welding the end face of the I-beam to the surface of the connecting plate 12 ensures that the vertical load of the beam is evenly transferred to the connecting plate 12. The flange of the I-beam enhances the lateral stiffness of the node, preventing lateral deformation, and is suitable for beam connections primarily bearing vertical loads. Several first rebar sleeves 21 are installed on the upper flange of the I-beam of the first node 20 near the connecting plate 12. The first rebar sleeves 21 allow for quick connection with the cantilever beam rebar and the node, eliminating the need for on-site rebar welding, reducing the risk of working at heights, and improving construction efficiency. Rebar transition node plates 22 are installed on both the upper and lower sides of the connecting plate 12 corresponding to the first node 20. The reinforcing bar transition gusset plate 22 serves as an auxiliary support for the reinforcing bars, providing additional connections and force transmission paths for the floor slab reinforcing bars. This avoids bending deformation caused by direct stress on the reinforcing bars, ensures the coordinated work of the reinforcing bars and the gusset plate, and improves the overall crack resistance of the beam. It not only distributes the tensile force transmitted by the reinforcing bars more evenly, reducing reliance on a single gusset plate, but also enhances the integrity of the gusset area, improving the redundancy and safety of the structure.

[0020] The second node 30 is an irregularly shaped I-beam structure. The end face of the I-beam of the second node 30 is welded to the flange of the corresponding H-beam 11, and the web of the I-beam is vertical. Both the upper and lower flanges of the I-beam of the second node 30 are bent downwards from the flange of the H-beam 11. The downward bending of the upper and lower flanges increases the contact area between the flanges and the beam, allowing for better bonding with the concrete slab, forming a support effect, and improving the node's pull-out resistance. Simultaneously, the bent structure can distribute horizontal loads, making it suitable for beam connections that simultaneously bear vertical and horizontal loads. Several second reinforcing bar sleeves 31 are installed on the upper flange of the I-beam of the second node 30 near the connecting plate 12. These second reinforcing bar sleeves 31 are used for connection to the beam. The third node 40 is an irregularly shaped I-beam structure. The end face of the I-beam of the third node 40 is welded to the corresponding connecting plate 12, and the web of the I-beam is vertical. The upper flange of the I-beam of the third node 40 bends downward from the connecting plate 12, and several third rebar sleeves 41 are set on the side of the upper flange adjacent to the connecting plate 12. The downward bending of the upper flange can adapt to the space constraints on the outside of the connecting plate 12, enhancing the node's resistance to bending moments at the beam ends. The third rebar sleeves 41 are set near the connecting plate 12, which can shorten the stress distance of the rebar, reduce rebar deformation, ensure reliable connection between the rebar and the node, avoid vibration displacement caused by excessive rebar length, and improve the overall stability of the beam.

[0021] The fourth node 50 is an I-beam structure. The end face of the I-beam of the fourth node 50 is welded to the flange of the corresponding T-beam 13. The web of the I-beam is located in the vertical direction. The upper flange of the I-beam of the fourth node 50 is aligned with the upper edge of the flange of the T-beam 13, so as to achieve uniform load transfer between the I-beam and the T-beam 13 and avoid tilting deformation of the node due to uneven force distribution.

[0022] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A connection structure between a box-type column and an overhanging beam, characterized in that: The system includes a box column (10) and an overhanging beam node set on the outer periphery of the box column (10). The box column (10) includes vertically arranged H-beams (11). The corresponding sides of the two flanges of the H-beams (11) are connected to connecting plates (12). One side of the two connecting plates (12) is aligned with one flange of the H-beams (11), and the other side protrudes from the other flange of the H-beams (11). A T-beam (13) is provided on the flange of the H-beams (11) located between the two connecting plates (12). The web of the T-beam (13) is located entirely in a vertical plane, and the side of the web away from the flange is connected to the flange of the H-beams (11). Several inner partitions are also provided on both sides of the web of the T-beams (13). The sides of the inner partitions are fixedly connected to the web, flange, and flange of the T-beams (13) and the flange of the H-beams (11), respectively.

2. The connection structure between a box-type column and an overhanging beam according to claim 1, characterized in that: The web of the H-beam (11) and the connecting plate (12) are connected by electroslag welding with several reinforcing plates (14).

3. The connection structure between a box-type column and an overhanging beam according to claim 1, characterized in that: The cantilever beam nodes include a first node (20), a second node (30), a third node (40), and a fourth node (50). The first node (20) and the third node (40) are respectively set on two connecting plates (12), the second node (30) is set on the flange of the H-beam (11) aligned with the connecting plate (12), and the fourth node (50) is set on the flange of the T-beam (13).

4. The connection structure between a box-type column and an overhanging beam according to claim 3, characterized in that: The first node (20) is an I-beam structure. The end face of the I-beam of the first node (20) is welded to the surface of the connecting plate (12), and the web of the I-beam is located in the vertical direction. Several first steel bar sleeves (21) are provided on the upper flange of the I-beam of the first node (20) on the side adjacent to the connecting plate (12).

5. The connection structure between a box-type column and an overhanging beam according to claim 4, characterized in that: On the connecting plate (12) corresponding to the first node (20), there are steel reinforcement transition node plates (22) on both the upper and lower sides of the first node (20).

6. The connection structure between a box-type column and an overhanging beam according to claim 3, characterized in that: The second node (30) is an irregular I-beam structure. The end face of the I-beam of the second node (30) is welded to the flange of the corresponding H-beam (11). The web of the I-beam is located in the vertical direction. The upper and lower flanges of the I-beam of the second node (30) are bent downward from the flange of the H-beam (11). Several second steel sleeves (31) are provided on the side of the upper flange of the I-beam of the second node (30) near the connecting plate (12).

7. The box-type column and overhanging beam connection structure according to claim 3, characterized in that: The third node (40) is an irregular I-beam structure. The end face of the I-beam of the third node (40) is welded to the corresponding connecting plate (12). The web of the I-beam is located in the vertical direction. The upper flange of the I-beam of the third node (40) is bent downward from the connecting plate (12). Several third steel sleeves (41) are provided on the side of the upper flange adjacent to the connecting plate (12).

8. The connection structure between a box-type column and an overhanging beam according to claim 3, characterized in that: The fourth node (50) is an I-beam structure. The end face of the I-beam of the fourth node (50) is welded to the flange of the corresponding T-beam (13). The web of the I-beam is located in the vertical direction. The upper flange of the I-beam of the fourth node (50) is aligned with the upper edge of the flange of the T-beam (13).

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