Profile steel beam and concrete composite floor node structure

Abstract

The utility model provides a section steel beam and concrete composite floor node structure which comprises a connecting structure arranged on one side of a concrete floor, section steel is clamped in the connecting structure, and the connecting structure comprises L-shaped connecting plates arranged on the two sides of the section steel. The side, close to the concrete floor, of the connecting plate is provided with a plurality of evenly-distributed limiting plates arranged in the concrete floor, the connecting plate is connected with a lower flange through a bolt structure penetrating through the connecting plate, the lower flange is arranged outside the concrete floor and welded to the limiting plates, and a chemical agent bag corresponding to the bolt structure is arranged in the concrete floor. The connecting structure arranged on one side of the concrete floor slab is used for fixing the profile steel, the profile steel is fixed through the connecting plate and the bolt structure, the problem of floor slab cracks caused by bending of the profile steel beam is effectively solved, and the overall stability and safety of the structure are improved.

Description

Technical Field

[0001] The utility model provides a node structure, belonging to the technical field of the connection between a profiled steel beam and a concrete composite floor slab, and particularly relates to a node structure between a profiled steel beam and a concrete composite floor slab. Background Technique

[0002] The node structure between a profiled steel beam and a concrete composite floor slab is a building structure technology that combines a profiled steel beam and a concrete floor slab to form a composite structure. This structure usually uses a profiled steel beam as the main load-bearing member, on which a steel mesh is laid, and then concrete is poured to form an integral floor slab. The profiled steel beam provides high strength and good bending resistance, while the concrete provides greater compressive capacity and good fire resistance. This structure is widely used in high-rise buildings, large-span structures and occasions that need to bear large loads. Its advantages include improving the overall stiffness and bearing capacity of the structure, reducing the amount of materials used, accelerating the construction speed, and improving the durability and stability of the structure. Through reasonable design, the node structure between a profiled steel beam and a concrete composite floor slab can effectively meet the requirements of modern buildings for safety, economy and aesthetics.

[0003] In the technical field of building engineering, the patent publication number CN213572572U discloses a node structure between a profiled steel beam and a concrete composite floor slab aimed at reducing the structural height. This structure consists of a prestressed concrete floor slab and an H-shaped steel beam, and a part of the H-shaped steel beam is embedded and fixed inside the floor slab. Through this design, the structural height at the node is reduced, thereby reducing the proportion in the total building storey height, which helps to reduce the building cost. However, although this structure has advantages in reducing the structural height, when bearing large loads, due to the rigid connection between the profiled steel beam and the floor slab, it may cause the bending of the profiled steel beam, and then lead to the generation of floor slab cracks, which may cause safety problems such as structural instability and even collapse. Content of the Utility Model

[0004] The embodiment of the present application provides a node structure between a profiled steel beam and a concrete composite floor slab, which effectively avoids the problem of floor slab cracks caused by the bending of the profiled steel beam and improves the overall stability and safety of the structure.

[0005] In order to solve the above technical problems, the utility model provides the following technical solution: A node structure between a profiled steel beam and a concrete composite floor slab, including a connection structure provided on one side of the concrete floor slab, with a profiled steel clamped inside the connection structure. The connection structure includes L-shaped connecting plates placed on both sides of the profiled steel. On the side of the connecting plate close to the concrete floor slab, a number of uniformly distributed limiting plates placed inside the concrete floor slab are provided. The connecting plate is connected through a bolt structure passing through itself with a lower flange placed outside the concrete floor slab and welded to the limiting plate. A chemical agent capsule corresponding to the bolt structure is provided inside the concrete floor slab.

[0006] Preferably, a steel bar structure penetrating through the limiting plate is provided inside the concrete floor slab, and the steel bar structure and the bolt structure are distributed alternately.

[0007] Preferably, an upper flange placed inside the concrete floor slab is welded to one end of the limiting plate away from the lower flange. The steel bar structure penetrates through the upper flange, and clamping plates penetrated by the steel bar structure and placed on both sides of the limiting plate are provided on both sides of the upper flange.

[0008] Preferably, the side plate of the connecting plate perpendicular to the lower flange is also connected to the profiled steel through a bolt structure.

[0009] Preferably, threaded grooves corresponding to the bolt structure are provided inside both the concrete floor slab and the profiled steel, and the chemical agent capsule is placed in the threaded groove inside the concrete floor slab.

[0010] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0011] In the present utility model, a connecting structure placed on one side of the concrete floor slab is provided to fix the profiled steel. The profiled steel is fixed by means of the connecting plate and the bolt structure. At this time, if the profiled steel is subjected to a large pressure, it will first rotate with the connecting plate itself, rather than damage the internal structure of the concrete floor slab. At the same time, the connecting plate connects the lower flange, enhancing the stability between the profiled steel and the concrete floor slab. With the help of the lower flange and the limiting plate, the profiled steel is indirectly connected to the internal structure of the concrete floor slab.

[0012] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional schematic diagram of a profiled steel beam and concrete composite floor slab joint structure of the present utility model;

[0014] Figure 2 is a cross-sectional view of a profiled steel beam and concrete composite floor slab joint structure of the present utility model;

[0015] Figure 3 is an exploded view of the main structure of a profiled steel beam and concrete composite floor slab joint structure of the present utility model;

[0016] Figure 4 is an exploded view of the bolt structure of a profiled steel beam and concrete composite floor slab joint structure of the present utility model.

[0017] As shown in the figure:

[0018] 1. Concrete floor slab;

[0019] 11. Steel section; 12. Reinforcement structure; 13. Clamping plate; 14. Threaded groove;

[0020] 2. Connecting structure;

[0021] 21. Connecting plate; 22. Limiting plate; 23. Bolt structure; 24. Lower flange; 25. Chemical agent capsule; 26. Upper flange. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs; the terms used in the specification of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Such as Figure 1 And Figure 2As shown, the utility model realizes the fixation of the profiled steel 11 through the connecting structure 2 arranged on one side of the concrete floor slab 1. The connecting structure 2 adopts a composite connection mechanism of an L-shaped connecting plate 21 and a bolt structure 23, ensuring that when the profiled steel 11 bears a large pressure, it preferentially rotates relative to the connecting plate 21 rather than directly acting on the internal structure of the concrete floor slab 1. In addition, the welded connection between the lower flange 24 and the limiting plate 22, as well as the anchoring effect of the bolt structure 23, significantly improves the overall stability between the profiled steel 11 and the concrete floor slab 1. The design of the limiting plate 22 realizes the indirect connection between the profiled steel 11 and the internal structure of the concrete floor slab 1 through its welding with the lower flange 24, enhancing the integrity and collaborative working ability of the structure. A steel bar structure 12 passing through the limiting plate 22 is arranged inside the concrete floor slab 1, and the steel bar structure 12 and the bolt structure 23 are staggered to form a composite reinforcement system. This design allows the profiled steel 11, when bearing a large pressure, to rotate relative to the connecting plate 21 first through the rotation mechanism of the connecting plate 21 and the bolt structure 23 rather than directly acting on the internal structure of the concrete floor slab 1. At the same time, the welded connection between the lower flange 24 and the limiting plate 22, as well as the arrangement of the steel bar structure 12, provides additional shear and bending resistance, enhancing the connection strength between the profiled steel 11 and the concrete floor slab 1.

[0026] The utility model realizes the fixation of the profiled steel 11 through the connecting structure 2 arranged on one side of the concrete floor slab 1. The connecting structure 2 adopts a composite connection mechanism of an L-shaped connecting plate 21 and a bolt structure 23, ensuring that when the profiled steel 11 bears a large pressure, it preferentially rotates relative to the connecting plate 21 rather than directly acting on the internal structure of the concrete floor slab 1. In addition, the welded connection between the lower flange 24 and the limiting plate 22, as well as the anchoring effect of the bolt structure 23, significantly improves the overall stability between the profiled steel 11 and the concrete floor slab 1. The design of the limiting plate 22 realizes the indirect connection between the profiled steel 11 and the internal structure of the concrete floor slab 1 through its welding with the lower flange 24, enhancing the integrity and collaborative working ability of the structure.

[0027] As Figure 3 and Figure 4As shown, preferred improvements include that one end of the limiting plate 22 away from the lower flange 24 is welded with an upper flange 26 placed inside the concrete floor slab 1, the steel bar structure 12 penetrates through the upper flange 26, and clamping plates 13 penetrated by the steel bar structure 12 and placed on both sides of the limiting plate 22 are arranged on both sides of the upper flange 26. One side plate body of the connecting plate 21 perpendicular to the lower flange 24 is also connected to the section steel 11 through a bolt structure 23. Thread grooves 14 corresponding to the bolt structure 23 are arranged inside both the concrete floor slab 1 and the section steel 11, and the chemical agent capsule 25 is placed in the thread groove 14 inside the concrete floor slab 1. When the bolt structure 23 is inserted into the thread groove 14, the chemical agent capsule 25 is squeezed and broken to fill the gaps between the threads, providing chemical bonding force, enhancing the connection stability and sealing performance, simplifying the construction process and improving the construction efficiency. The overall structural design comprehensively considers long-term load and environmental factors, extends the service life, reduces the maintenance cost, and has significant engineering application value.

[0028] In this implementation scheme, the combination of the L-shaped connecting plate 21 and the bolt structure 23 realizes the rotation mechanism between the section steel 11 and the connecting plate 21 when the section steel 11 is stressed, avoiding direct impact on the internal structure of the floor slab 1. At the same time, the welded connection between the lower flange 24 and the limiting plate 22 and the arrangement of the steel bar structure 12 provide additional shear and bending resistance, enhancing the connection strength. The arrangement of the upper flange 26 allows the steel bar structure 12 to penetrate, providing additional fixing points, maintaining the thin design of the floor slab 1, and improving the space utilization rate. When the bolt structure 23 is inserted into the thread groove 14, the chemical agent capsule 25 is squeezed and broken to fill the gaps between the threads, providing chemical bonding force, enhancing the connection stability and sealing performance, simplifying the construction process, and improving the construction efficiency. The overall structural design considers long-term load and environmental factors, extends the service life, reduces the maintenance cost, and has significant engineering application value.

[0029] In use, first, according to the design drawings and construction requirements, determine the position of the profiled steel 11 on one side of the concrete floor slab 1, and ensure the accurate corresponding relationship between the profiled steel 11 and the floor slab 1; install the connection structure 2, which includes L-shaped connecting plates 21. These connecting plates 21 will be placed on both sides of the profiled steel 11 and connected to the profiled steel 11 through bolt structures 23; weld the limiting plates 22 to the lower flange 24 to ensure the welding quality to form stable connection points; arrange the steel bar structure 12 inside the concrete floor slab 1, ensure that the steel bar structure 12 penetrates through the limiting plates 22 and is staggered with the bolt structures 23 to form a composite reinforcement system; weld the upper flange 26 to the end of the limiting plate 22 away from the lower flange 24, and install clamping plates 13 on both sides of the upper flange 26. These clamping plates 13 will be penetrated by the steel bar structure 12; pass the bolt structures 23 through the connecting plates 21 and anchor them into the concrete floor slab 1 to ensure the stability of the profiled steel 11; before inserting the bolt structures 23 into the threaded grooves 14, place the chemical agent capsules 25 into the threaded grooves 14 inside the concrete floor slab 1; tighten the bolt structures 23 so that they are inserted into the threaded grooves 14. At this time, the chemical agent capsules 25 are squeezed and broken, and the chemical agent fills the gaps between the threads to provide chemical bonding force; after the profiled steel 11 and the connection structure 2 are installed and fixed, carry out the pouring work of the concrete floor slab 1 to ensure that the concrete evenly covers and fully wraps the steel bar structure 12; after pouring, properly cure the concrete floor slab 1, and at the same time check the stability and integrity of each connection part to ensure the construction quality; after the concrete floor slab 1 reaches the design strength, carry out subsequent construction operations such as the treatment of the floor slab surface and the construction of the upper structure.

[0030] The installation and fixation of the profiled steel beam and concrete composite floor slab joint structure of the present utility model are realized through the above steps. Its design takes into account the convenience of construction and the stability of the structure, aiming to improve the construction efficiency, extend the service life of the structure, and reduce the maintenance cost.

[0031] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims

1. A joint structure of a profiled steel beam and a concrete composite floor slab, comprising a concrete floor slab (1), characterized in that: One side of the concrete floor slab (1) is provided with a connecting structure (2). A profiled steel (11) is clamped inside the connecting structure (2). The connecting structure (2) includes L-shaped connecting plates (21) arranged on both sides of the profiled steel (11). On the side of the connecting plate (21) close to the concrete floor slab (1), a number of uniformly distributed limiting plates (22) placed inside the concrete floor slab (1) are provided. The connecting plate (21) is connected through a bolt structure (23) passing through itself to a lower flange (24) placed outside the concrete floor slab (1) and welded to the limiting plate (22). A chemical agent capsule (25) corresponding to the bolt structure (23) is provided inside the concrete floor slab (1).

2. The joint structure of a profiled steel beam and a concrete composite floor slab according to claim 1, characterized in that: A steel bar structure (12) passing through the limiting plate (22) is provided inside the concrete floor slab (1). The steel bar structure (12) and the bolt structure (23) are staggered.

3. The joint structure of a profiled steel beam and a concrete composite floor slab according to claim 2, characterized in that: One end of the limiting plate (22) far from the lower flange (24) is welded to an upper flange (26) placed inside the concrete floor slab (1). The steel bar structure (12) passes through the upper flange (26). Clamping plates (13) which are penetrated by the steel bar structure (12) and arranged on both sides of the limiting plate (22) are provided on both sides of the upper flange (26).

4. The joint structure of a profiled steel beam and a concrete composite floor slab according to claim 1, characterized in that: The side plate body of the connecting plate (21) perpendicular to the lower flange (24) is also connected to the profiled steel (11) through the bolt structure (23).

5. A steel beam and concrete composite floor slab joint structure according to claim 1, characterized in that: Threaded grooves (14) corresponding to the bolt structure (23) are provided inside both the concrete floor slab (1) and the profiled steel (11). The chemical agent capsule (25) is placed in the threaded groove (14) inside the concrete floor slab (1).

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