Novel concrete filled steel tube-steel beam fabricated beam-column joint and construction method thereof

Abstract

The invention relates to a novel concrete filled steel tube-steel beam assembly type beam column joint and a construction method thereof, and belongs to the technical field of building construction, the connecting end faces of a prefabricated square steel upper pipe column and a prefabricated square steel lower pipe column are each provided with a pipe column end plate, and T-shaped holes are further formed in the periphery of the prefabricated square steel upper pipe column and the periphery of the prefabricated square steel lower pipe column; t-shaped holes of the prefabricated square steel upper tubular column and the prefabricated square steel lower tubular column penetrate through the tubular column end plates, the T-shaped holes are communicated, the tubular column end plates of the prefabricated square steel upper tubular column and the prefabricated square steel lower tubular column are fixedly connected, the end face of the H-shaped cross beam is matched with the T-shaped holes, and the H-shaped cross beam is inserted into the T-shaped holes. By means of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column, the problems that brackets need to be preset and field welding needs to be conducted in a traditional combined joint are solved, and full assembly between beam columns is achieved.

Description

Technical Field

[0001] The invention relates to a novel steel tube concrete-steel beam assembled beam-column node and a construction method thereof, belonging to the technical field of building construction. Background Art

[0002] Prefabricated buildings are constructed by manufacturing building components and accessories in a factory, transporting them to the construction site, and then assembling and installing them on-site using reliable connections. This minimizes pollution from on-site operations and achieves "zero emissions." Prefabricated buildings utilize standardized design, factory-based production, prefabricated construction, information-based management, and intelligent applications. They offer advantages such as high quality, precision, and efficiency, making them a growing trend in green construction technology.

[0003] Steel tube concrete fully utilizes the advantages of concrete and steel, has high bearing capacity and ductility, is not only economical, but also greatly shortens the construction period. It has been increasingly used in high-rise office buildings and commercial buildings. In traditional prefabricated composite beam-column joints, there are mainly bolt connections, welding connections, and bracket connections. Welding connections are generally manual welding on site, which is difficult to process and has unstable quality. The bracket connection is simple and convenient to operate and has good bearing capacity, but it affects the overall appearance and has high requirements for construction technology. The bolt connection is easy to operate in actual construction and can transmit axial force, bending moment, and shear force. It has obvious advantages. In view of the problems existing in the current prefabricated structure, it is urgent to provide a new prefabricated beam-column node structure. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a new type of steel tube concrete-steel beam assembled beam-column node and its construction method. The node structure avoids the problem that traditional combined nodes require preset corbels and on-site welding, and realizes full assembly between beams and columns.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is a new type of steel tube concrete-steel beam assembled beam-column node, including a prefabricated square steel upper tube column, a prefabricated square steel lower tube column and an H-shaped crossbeam. The connecting end faces of the prefabricated square steel upper tube column and the prefabricated square steel lower tube column are both provided with tube column end plates, and the prefabricated square steel upper tube column and the prefabricated square steel lower tube column are also provided with T-shaped holes around them. The T-shaped holes of the prefabricated square steel upper tube column and the prefabricated square steel lower tube column pass through the tube column end plates, and the T-shaped holes are connected. The tube column end plates of the prefabricated square steel upper tube column and the prefabricated square steel lower tube column are connected and fixed, the end face of the H-shaped crossbeam is adapted to the T-shaped hole, and the H-shaped crossbeam is inserted into the T-shaped hole and connected and fixed to the prefabricated square steel upper tube column and the prefabricated square steel lower tube.

[0006] Preferably, inner partitions are installed inside the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column respectively, and the inner partitions are adapted to the edges of the T-shaped holes. The H-shaped crossbeam extends through the T-shaped holes into the cavity between the two inner partitions. Stiffening plates are provided between the inner partitions and the inner walls of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column, and a casting hole is provided in the center of the inner partition.

[0007] Preferably, a plurality of connection holes are provided on the pipe column end plate, and two pipe column end plates are connected by bolts.

[0008] Preferably, the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column are also respectively installed with flange reinforcement plates and web reinforcement plates, the flange reinforcement plates are located below the flange of the H-beam, and the web reinforcement plates are located on both sides of the web of the H-beam, and the flange reinforcement plates and web reinforcement plates are bolted to the H-beam.

[0009] A new type of construction method for steel tube concrete-steel beam assembled beam-column node is carried out according to the following steps: S1. Prefabricate square steel upper pipe columns, prefabricated square steel lower pipe columns and H-shaped beams in the factory; S2. First install the prefabricated square steel lower pipe column on the prefabricated foundation or the lower node, then align and install the prefabricated square steel upper pipe column on the prefabricated square steel lower pipe column, and align the two T-holes to form an H-shaped reserved hole; S3. Insert the H-shaped crossbeam into the H-shaped reserved hole, and connect and fix the H-shaped crossbeam to the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column; S4. By pouring concrete into the prefabricated square steel upper tube column, the concrete enters the cavity between the inner partitions and the prefabricated square steel lower tube column through the pouring holes of the inner partitions until the interior of the steel tube is poured densely, forming a steel tube concrete-steel beam assembled beam-column node structure.

[0010] Compared with the prior art, the present invention has the following technical effects: the present invention realizes a fully assembled connection of beams and columns at the construction site by arranging prefabricated steel pipe columns and H-shaped steel beams, does not require welding technology, avoids the problem of corbel connection affecting the appearance, reduces the use of raw materials, and saves construction costs; and by arranging reserved T-holes on the steel pipe columns, the beams are extended to the interior of the steel pipe columns, connected by bolts, and the beams can be self-anchored after pouring concrete. In addition, internal partitions and stiffening ribs are arranged inside the steel pipe columns, and steel beam flanges and web reinforcement plates are arranged outside, which strengthen the connection of the nodes, ensure the reliability of the nodes, and meet the requirements of strong nodes and weak components. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention.

[0012] Figure 2It is a structural schematic diagram of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column in the present invention.

[0013] Figure 3 It is a schematic diagram of the end structure of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column in the present invention.

[0014] Figure 4 It is a schematic diagram of the decomposition structure in the present invention. DETAILED DESCRIPTION

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] like Figures 1 to 4 As shown, a new type of steel tube concrete-steel beam assembled beam-column node includes a prefabricated square steel upper pipe column 1, a prefabricated square steel lower pipe column 2 and an H-shaped crossbeam 3. The connecting end faces of the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2 are both provided with pipe column end plates 5. The prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2 are also provided with T-shaped holes 4 around them. The T-shaped holes of the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2 pass through the pipe column end plates 5, and the T-shaped holes 4 are connected. The pipe column end plates 5 of the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2 are connected and fixed. The end face of the H-shaped crossbeam 3 is adapted to the T-shaped hole 4, and the H-shaped crossbeam 3 is inserted into the T-shaped hole 4 and connected and fixed to the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe 2.

[0017] The present invention adopts a combined structure of a prefabricated square steel upper pipe column 1, a prefabricated square steel lower pipe column 2 and an H-shaped crossbeam 3. T-shaped holes 4 are arranged around the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2. The prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2 are connected by a pipe column end plate 5. After the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2 are connected, the T-shaped holes 4 around them correspond to each other up and down, and a gap is reserved on the pipe column end plate 5, so that the H-shaped crossbeam 3 can be inserted into the H-shaped reserved hole formed by the two T-shaped holes 4. At the same time, the H-shaped reserved hole is located in the center of the pipe column, and the length and height of the reserved flange of the T-shaped hole 4 are equal to the length and height of the flange of the H-shaped beam, the width of the reserved web of the T-shaped hole 4 is the same as the width of the web of the H-shaped beam, and the height is half of the web of the I-shaped beam.

[0018] Among them, a plurality of connection holes 9 are provided on the pipe column end plate 5, and the two pipe column end plates 5 are connected by bolts. An inner partition 6 is installed inside the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2, respectively. The inner partition 6 is adapted to the edge of the T-shaped hole 4. The H-shaped crossbeam 3 extends through the T-shaped hole 4 into the cavity between the two inner partitions 6. A stiffening plate 7 is provided between the inner partition 6 and the inner wall of the prefabricated square steel upper pipe column 1 and the prefabricated square steel lower pipe column 2. A casting hole 8 is provided in the center of the inner partition 6. The inner partition 6 is fixed inside the pipe column and is provided at the edge of the T-shaped hole 4. A precast hole 8 is reserved in the center of the inner partition. The size of the precast hole is reasonably set according to the size of the column, but does not exceed the extension length of the beam inserted into the column. A stiffening plate 7 is designed above the inner partition. The position of the stiffening plate 7 is aligned with the reserved web hole. The size of the stiffening plate 7 is reasonably set according to the size of the reserved web hole.

[0019] In addition, flange reinforcement plates 10 and web reinforcement plates 11 are installed on the prefabricated square steel upper pipe column 1 and prefabricated square steel lower pipe column 2, respectively. The flange reinforcement plates 10 are located below the flanges of the H-beam 3, and the web reinforcement plates 11 are located on both sides of the web of the H-beam 3. The flange reinforcement plates 10 and web reinforcement plates 11 are bolted to the H-beam 3. The flange reinforcement plates 10 and web reinforcement plates 11 can strengthen and fix the H-beam 3, ensuring a reliable and stable structure.

[0020] During the specific construction, follow the steps below: S1. Prefabricate square steel upper pipe columns, prefabricated square steel lower pipe columns and H-shaped beams in the factory; S2. First install the prefabricated square steel lower pipe column on the prefabricated foundation or the lower node, then align and install the prefabricated square steel upper pipe column on the prefabricated square steel lower pipe column, and align the two T-holes to form an H-shaped reserved hole; S3. Insert the H-shaped crossbeam into the H-shaped reserved hole, and connect and fix the H-shaped crossbeam to the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column; S4. By pouring concrete into the prefabricated square steel upper tube column, the concrete enters the cavity between the inner partitions and the prefabricated square steel lower tube column through the pouring holes of the inner partitions until the interior of the steel tube is poured densely, forming a steel tube concrete-steel beam assembled beam-column node structure.

[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A novel steel tube concrete-steel beam assembled beam-column joint, comprising a prefabricated square steel upper column, a prefabricated square steel lower column, and an H-shaped crossbeam, characterized by: The connecting end faces of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column are both provided with pipe column end plates, and T-shaped holes are also provided around the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column. The T-shaped holes of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column pass through the pipe column end plates, and the T-shaped holes are connected. The pipe column end plates of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column are connected and fixed, and the end face of the H-shaped crossbeam is adapted to the T-shaped hole, and the H-shaped crossbeam is inserted into the T-shaped hole and is connected and fixed to the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe.

2. The novel steel tube concrete-steel beam assembled beam-column node according to claim 1, characterized in that: The interior of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column are respectively installed with inner partitions, and the inner partitions are adapted to the edges of the T-shaped holes. The H-shaped crossbeam extends into the cavity between the two inner partitions through the T-shaped holes. Stiffening plates are provided between the inner partitions and the inner walls of the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column, and a casting hole is provided in the center of the inner partition.

3. The novel steel tube concrete-steel beam assembled beam-column joint according to claim 1, characterized in that: The column end plate is provided with a plurality of connection holes, and the two column end plates are connected by bolts.

4. The novel steel tube concrete-steel beam assembled beam-column joint according to claim 1, characterized in that: The prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column are also respectively installed with flange reinforcement plates and web reinforcement plates. The flange reinforcement plates are located below the flanges of the H-beam, and the web reinforcement plates are located on both sides of the web of the H-beam. The flange reinforcement plates and web reinforcement plates are bolted to the H-beam.

5. A construction method for a novel steel tube concrete-steel beam assembled beam-column joint according to any one of claims 1 to 4, characterized in that: Follow the steps below to do this, S1. Prefabricate square steel upper pipe columns, prefabricated square steel lower pipe columns and H-shaped beams in the factory; S2. First install the prefabricated square steel lower pipe column on the prefabricated foundation or the lower node, then align and install the prefabricated square steel upper pipe column on the prefabricated square steel lower pipe column, and align the two T-holes to form an H-shaped reserved hole; S3. Insert the H-shaped crossbeam into the H-shaped reserved hole, and connect and fix the H-shaped crossbeam to the prefabricated square steel upper pipe column and the prefabricated square steel lower pipe column; S4. By pouring concrete into the prefabricated square steel upper tube column, the concrete enters the cavity between the inner partitions and the prefabricated square steel lower tube column through the pouring holes of the inner partitions until the interior of the steel tube is poured densely, forming a steel tube concrete-steel beam assembled beam-column node structure.

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