A connection structure between a steel beam and a steel-concrete composite structure

Abstract

The present invention belongs to a connection structure between a steel beam and a steel-concrete composite structure in the field of building structural engineering, and includes a steel-concrete composite structure, a steel beam, a connection strengthening key, and an anchor. The steel-concrete composite structure is connected to the steel beam through a connection steel plate located on one side thereof. An anchor and a connection strengthening key are arranged on the side of the connection steel plate facing the steel-concrete composite structure, and the anchor extends into the steel-concrete composite structure. Through the anchoring of the anchor in the steel-concrete composite structure with the concrete in the steel-concrete composite structure, the tension or pressure of the steel beam flange can be effectively transmitted, which can replace the traditional method of setting an internal partition between the steel-concrete composite structure and the steel beam, reduce the steel consumption, lower the processing and construction difficulty, improve the processing and construction efficiency, and effectively solve the problems of difficult setting of the internal partition at the connection node and indirect force transmission path.

Description

Technical Field

[0001] The present invention belongs to the field of building structural engineering and relates to a connection structure between a steel beam and a steel-concrete composite structure. Background Art

[0002] Concrete-filled steel tube structures and steel plate composite shear wall structures are widely used in the fields of civil and industrial buildings. With the rapid development of prefabricated steel structure technology, the requirements for the processing convenience and construction efficiency of steel structure connection technologies are getting higher and higher.

[0003] When connecting a traditional concrete-filled steel tube column with a steel beam, internal diaphragms need to be set inside the concrete-filled steel tube column to effectively transfer the tensile or compressive forces of the upper and lower flanges of the steel beam. The setting of a large number of internal diaphragms increases the steel consumption of the steel structure, and at the same time increases the difficulty of concrete pouring and vibration inside the concrete-filled steel tube column. Meanwhile, the processing of internal diaphragms in small-section concrete-filled steel tube columns is difficult, and sometimes the column has to be processed in multiple sections for adding internal diaphragms, reducing the processing and construction efficiency.

[0004] When connecting a steel plate composite shear wall with a steel beam, it is even more difficult to set internal diaphragms on the upper and lower flanges of the steel beam. Usually, strengthening treatments are carried out by methods such as pasting reinforcement plates on the flange side of the steel beam or thickening the plates. The force transmission path is not direct, the process is long, resulting in material waste and the safety performance needs to be verified. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a connection structure between a steel beam and a steel-concrete composite structure to solve the problems existing in the connection between the steel-concrete structure and the steel beam.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A connection structure between a steel beam and a steel-concrete composite structure includes a steel-concrete composite structure, a steel beam, connection strengthening keys, and anchor bolts; the steel-concrete composite structure is connected to the steel beam through a connection steel plate on one side thereof. Anchor bolts and connection strengthening keys are arranged on the side of the connection steel plate facing the steel-concrete composite structure, and the anchor bolts extend into the steel-concrete composite structure; after concrete is poured into the steel-concrete composite structure, the steel-concrete composite structure, the concrete, the steel beam, the anchor bolts, and the connection strengthening keys form an integral body. The tensile or compressive force of the steel beam flange is transmitted to the concrete through the connection strengthening keys and the anchor bolts, and further evenly transmitted to the steel-concrete composite structure through the concrete, forming a clear force transmission path.

[0008] Further, the anchor bolts are U-shaped, and the two ends of the U-shape respectively correspond to the positions of the upper flange end and the lower flange end of the steel beam.

[0009] Furthermore, the connecting reinforcement key is provided with an opening for plug welding of the anchor, and the anchor penetrates through the connecting reinforcement key and the connecting steel plate through the opening and is welded by plug welds.

[0010] Furthermore, the anchor is made of any one of bolts, steel bars, angle steels, channel steels, and flat steels.

[0011] Furthermore, the connecting reinforcement key is welded to the connecting steel plate of the steel-concrete composite structure by fillet welds.

[0012] Furthermore, the connecting reinforcement key is made of any one of T-shaped steels, steel plates, angle steels, and channel steels.

[0013] Furthermore, the steel-concrete composite structure is a concrete-filled steel tube column or a steel plate composite shear wall, and is rectangular, polygonal or cylindrical.

[0014] Furthermore, the steel beam is in the shape of an H or a box.

[0015] The beneficial effects of the present invention are as follows:

[0016] In the present invention, the anchor inside the steel-concrete composite structure is anchored to the concrete inside the steel-concrete composite structure, effectively transmitting the tensile or compressive force of the steel beam flange, which can replace the traditional method of setting internal partitions in the connection between the steel-concrete structure and the steel beam, reduce the steel consumption, lower the processing and construction difficulty, improve the processing and construction efficiency, and effectively solve the problems of difficult setting of internal partitions and indirect force transmission paths.

[0017] Other advantages, objectives and features of the present invention 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 invention. The objectives and other advantages of the present invention can be realized and obtained through the following specification. Description of the Drawings

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in preferred detail below with reference to the drawings, wherein:

[0019] Figure 1 is a top view of a connection structure between a steel beam and a steel-concrete composite structure of the present invention;

[0020] Figure 2 is Figure 1 section a-a in

[0021] Reference numerals: steel-concrete composite structure 1, steel beam 2, concrete 3, connecting reinforcement key 4, anchor 5, plug weld 6, connecting steel plate 7. Detailed Embodiments

[0022] The embodiments of the present invention will be described below through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following examples only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following examples and the features in the examples can be combined with each other.

[0023] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as limiting the present invention; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0024] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] Please refer to Figures 1 to 2 , which is a connection structure between a steel beam and a steel-concrete composite structure. The steel-concrete composite structure 1 can be a concrete-filled steel tube column or a steel plate composite shear wall, and its specific structure can be a cube, a polyhedron or a cylinder. The specific structure of the steel beam 2 can be an H-shaped or box-shaped. The corbel ends of the steel-concrete composite structure 1 and the steel beam 2 are prefabricated in the factory, and the other end of the steel beam 2 is completed on-site during the construction stage.

[0026] During the processing stage, before the connection steel plate 7 of the steel-concrete composite structure 1 is welded together with other steel plates, a connection reinforcement key 4 and an anchor 5 are pre-set on the connection steel plate 7. The connection reinforcement key 4 is made of any one of T-shaped steel, steel plate, angle steel, and channel steel, and is welded to the connection steel plate 7 through a fillet weld. The anchor 5 is U-shaped and is made of any one of bolts, steel bars, angle steel, channel steel, and flat steel. The connection reinforcement key 4 is provided with an opening for plug welding of the anchor 5. The two ends of the anchor 5 penetrate the connection reinforcement key 4 and the connection steel plate 7 through the opening, and are welded to the connection reinforcement key 4 and the connection steel plate 7 through a plug weld. After the connection of the connection steel plate 7, the connection reinforcement key 4, and the anchor 5 is completed, the connection steel plate 7 is welded together with the remaining steel plates of the steel-concrete composite structure 1. Then, the flange of the steel beam 2 is welded to the connecting steel plate 7 in the steel-concrete composite structure 1, and the web of the steel beam 2 is welded to the connecting steel plate 7 in the steel-concrete composite structure 1, wherein the two ends of the U-shaped anchor 5 correspond to the positions of the upper flange end and the lower flange end of the steel beam, respectively, and the number of anchors 5 and the embedding depth in the concrete are confirmed by calculation. Of course, the anchor 5 can also be of other structures, such as a straight line shape, one end is connected to the connecting steel plate 7, and corresponds to the upper flange end or the lower flange end of the steel beam 2, and the other end is suspended and extends into the steel-concrete composite structure, or the other end is connected to the steel plate on the opposite side of the connecting steel plate 7, forming a tensioning form.

[0027] During the construction phase, after the poured concrete in the steel-concrete composite structure 1 solidifies, the steel-concrete composite structure 1, concrete, anchors 5, connection reinforcement keys 4 and steel beam 2 form a whole. The tension or pressure of the flange of the steel beam 2 is transmitted to the concrete through the connection reinforcement keys 4 and anchors 5, and the force is evenly transmitted to the steel-concrete composite structure 1 through the concrete, forming a clear force transmission path.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A connecting structure between a steel beam and a steel-concrete composite structure, characterized in that: It includes a steel-concrete composite structure, a steel beam, a connecting reinforcement key and an anchor. The steel-concrete composite structure is connected to the steel beam through a connecting steel plate located on one side thereof. An anchor and a connecting reinforcement key are provided on the side of the connecting steel plate facing the steel-concrete composite structure. The anchor extends into the steel-concrete composite structure. The anchor is U-shaped, and the two ends of the U-shape respectively correspond to the positions of the upper flange end and the lower flange end of the steel beam. And the anchor is made of any one of bolts, steel bars, angle steels, channel steels and flat steels. After concrete is poured into the steel-concrete composite structure, the steel-concrete composite structure, the concrete, the steel beam, the anchor and the connecting reinforcement key form an integral body. The tensile or compressive force of the steel beam flange is transmitted to the concrete through the connecting reinforcement key and the anchor, and further evenly transmitted to the steel-concrete composite structure through the concrete, forming a clear force transmission path.

2. The connection structure between the steel beam and the steel-concrete composite structure according to claim 1, characterized in that: The connecting reinforcement key is provided with an opening for plug welding of the anchor. The anchor penetrates through the connecting reinforcement key and the connecting steel plate through the opening and is welded by a plug weld.

3. The connection structure between the steel beam and the steel-concrete composite structure according to claim 1, characterized in that: The connecting reinforcement key is welded to the connecting steel plate of the steel-concrete composite structure by a fillet weld.

4. The connection structure between the steel beam and the steel-concrete composite structure according to claim 1, characterized in that: The connecting reinforcement key is made of any one of T-shaped steels, steel plates, angle steels and channel steels.

5. The connection structure between the steel beam and the steel-concrete composite structure according to claim 1, characterized in that: The steel-concrete composite structure is a concrete-filled steel tube column or a steel plate composite shear wall, and is rectangular, polygonal or cylindrical.

6. The connection structure between the steel beam and the steel-concrete composite structure according to claim 1, characterized in that: The steel beam is H-shaped or box-shaped.

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