A beam-column node structure and its preparation method and application

Abstract

The present invention provides a node structure of beams and columns, and a preparation method and application thereof. The node structure of beams and columns comprises a pipe column, a beam and a connector, wherein the pipe column and the beam are vertically connected by a connector, wherein the connector comprises a side plate and a sleeve plate, wherein the side plate and the pipe column are connected by a single-sided bolt, wherein the side plate and the sleeve plate are connected by a single-sided bolt, and wherein the sleeve plate and the beam are connected by a high-strength bolt. The node structure of beams and columns of the present invention can be used for the node connection between columns and beams in an assembled structure. The node structure of beams and columns of the present invention fully utilizes the shear resistance of the single-sided bolts through a specific connection method, so that the force of the structure is more reasonable, and the entire connection has zero welding.

Description

Technical Field

[0001] The invention relates to a structural connection method, in particular to a beam-column node connection method, belonging to the technical field of prefabricated assembly structures. Background Art

[0002] As a popular direction of building development, prefabricated steel structure is characterized by light weight, high strength, reusability, good earthquake resistance, fast construction, and less pollution. It has good development prospects and market potential. The nodes in the prefabricated structure are an important component and have a far-reaching impact on the structure.

[0003] The prior art has a variable beam height assembly node and construction method for a double-ear plate type square steel pipe column and an H-shaped steel frame. This method requires welding the ear plate to the square steel pipe column and welding the end plate to the H-shaped steel beam. The upper and lower connecting parts connect the upper and lower flanges of the H-shaped steel beam to the ear plate through high-strength bolts. This method is suitable for the assembled connection of the square steel pipe column and the H-shaped steel beam structure.

[0004] However, the above method requires welding ear plates on the columns, and the force transmitted from the beam to the pipe column entirely relies on the welded ear plates. If the strength of the ear plates cannot be guaranteed, or the welding quality between the ear plates and the pipe columns cannot be guaranteed, the performance of the nodes cannot be guaranteed; secondly, although the beam height can be adjusted, the beam models in the steel structure are different, and the beam width also needs to be adjusted to make the structure more reasonable and universal. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a node connection method with zero welding, no need for end plates, reasonable force and universality.

[0006] In order to achieve the above-mentioned technical objectives, the present invention provides a node structure of a beam and a column, which node structure has a pipe column, a beam and a connecting member, and the pipe column and the beam are vertically connected by the connecting member; wherein the connecting member includes a side plate and a sleeve plate, the side plate and the pipe column are connected by a single-sided bolt, the side plate and the sleeve plate are connected by a single-sided bolt, and the sleeve plate and the beam are connected by a high-strength bolt.

[0007] The node structure of the beams and columns of the present invention solves the problem that the closed section is difficult to install by connecting with single-sided bolts, thereby realizing simple and convenient construction. At the same time, through the above-mentioned specific connection method, the problem that the shear resistance of the single-sided bolts is stronger than the tensile resistance, which makes it difficult to achieve standardization and lacks universality is solved.

[0008] The present invention also provides an assembled device, which has the node structure of the beam column of the present invention. The assembled device here includes but is not limited to the connection between the square steel pipe and the H-shaped steel beam in the assembled steel structure.

[0009] The node structure of the beam column of the present invention can be realized by the following steps:

[0010] Connect the sleeve plate and beam with high-strength bolts;

[0011] Connect the side plate on one side to the web of the pipe column with single-sided bolts, and connect the sleeve plate with single-sided bolts;

[0012] Connect the side plate on the other side to the web of the pipe column with single-sided bolts, and connect the sleeve plate with single-sided bolts to complete the installation of the beam-column node structure.

[0013] The node structure of the beam and column of the present invention makes the installation of the closed component cross section more convenient and quick by means of single-sided bolts, has strong operability and low construction difficulty.

[0014] The node structure of the beam and column of the present invention is connected by single-sided bolts of the side plate, the pipe column and the sleeve plate, and the sleeve plate is connected by high-strength bolts, which fully utilizes the shear resistance of the single-sided bolts and makes the stress of the structure more reasonable.

[0015] In addition, the node structure of the beam column of the present invention can realize variable adjustment of the beam height and beam width through the provision of long bolt holes, thereby reducing the requirements for component processing and construction accuracy and improving the versatility and efficiency of the node.

[0016] Furthermore, the node structure of the beam column of the present invention is a zero-welding connection structure, thereby avoiding the influence of welding residual stress on the structure.

[0017] The node structure of the beam column of the present invention can be widely used in the node connection between the column and the beam in the assembled structure. The structure here includes but is not limited to the connection between the square steel pipe and the H-shaped steel beam in the assembled steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a subjective diagram of the node structure of the beam and column in a specific embodiment of the present invention.

[0019] Figure 2 It is a front view of the node structure of the beam column in a specific embodiment of the present invention.

[0020] Figure 3 It is a side view of the node structure of the beam column in a specific embodiment of the present invention.

[0021] Figure 4 It is a schematic diagram of the side panel structure in a specific embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of a channel steel plate in a specific embodiment of the present invention.

[0023] Description of main figure symbols:

[0024] 1. Square steel pipe column; 2. H-shaped steel beam; 3. Side plate; 4. Bolt hole; 5. Channel steel plate; 6. Long bolt hole; 7. Single-sided bolt. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention is now described in detail below, but it should not be construed as limiting the applicable scope of the present invention.

[0026] like Figure 1 As shown, in a specific embodiment of the present invention, a node structure of a beam-column is provided, and the node structure of the beam-column has a pipe column, a beam and a connecting member.

[0027] Wherein, the pipe column and the beam are vertically connected through connecting parts.

[0028] The column may be Figure 1 The square steel column 1 shown, the beam can be Figure 1 The H-shaped steel beam 2 shown in the figure does not need to be cut or trimmed in cross section, and can be directly installed, which is convenient to prepare.

[0029] The connecting parts include side plates and sleeve plates. The side plates and sleeve plates are used as connecting parts to fix the pipe column and the beam. The side plates used can be conventional side plates in the art, such as Figure 1 The side plate 3 is shown. The side plate 3 has Figure 4 The structure shown in FIG. The sleeve plate used can be as follows: Figure 1 The channel steel plate 5 shown in FIG. Figure 5 The structure shown.

[0030] In a specific embodiment of the present invention, all connecting parts are bolted, so that the connected node structure achieves zero welding.

[0031] Among them, the side plate is connected to the pipe column by single-sided bolts, the side plate is connected to the sleeve plate by single-sided bolts, and the sleeve plate is connected to the beam by high-strength bolts. The single-sided bolt connection solves the problem of closed section being difficult to install. At the same time, through the above connection method, the bending moment and shear force of the beam are transmitted to the side plate, and then transmitted to the web of the pipe column through the side plate.

[0032] The side plate uses the shearing capacity of the single-sided bolts (the tensile capacity of the single-sided bolts is weaker than its shearing capacity), and the flange of the beam uses ordinary high-strength bolts (the tensile capacity of ordinary high-strength bolts is significantly higher than that of the single-sided bolts). The entire connection has zero welding, good component versatility, and more reasonable force. It is especially suitable for the assembled connection of square tube columns and H-shaped steel beams.

[0033] In this specific embodiment, the high-strength bolt is a bolt with a strength of 10.9. Compared with ordinary bolts, the high-strength bolts used in this specific embodiment have improved tensile strength, shear resistance and strength.

[0034] It should be noted here that the column wall of the pipe column opposite to the beam is the flange of the pipe column, and the column wall perpendicular to the flange of the pipe column is the web of the pipe column.

[0035] Specifically, in Figure 1 In the figure, the side plate 3 is connected to the web of the square steel tube column 1 by single-sided bolts 7, the side plate 3 is connected to the channel steel plate 5 by single-sided bolts 7, and the channel steel plate 5 is connected to the upper and lower flanges of the H-shaped steel beam 2 by high-strength bolts.

[0036] There is a predetermined distance between the sleeve plate and the flange of the pipe column. The predetermined distance is to make the force of the pipe column clear, so that all the forces are concentrated on the web of the pipe column, and the flange of the pipe column is not directly subjected to the force.

[0037] In a further specific embodiment of the present invention, preferably, the predetermined distance between the sleeve plate and the flange of the pipe column can be 0.5 cm-1.5 cm. For example, the predetermined distance can be 0.7 cm, 0.9 cm, 1 cm or 1.2 cm.

[0038] like Figure 2 and Figure 3 As shown, a prefabricated beam-column node structure of a square steel tube column 1 and an H-shaped steel beam 2 is provided:

[0039] The upper and lower channel steel plates 5 are connected to the upper and lower flanges of the H-shaped steel beam 2 by high-strength bolts;

[0040] The width of the channel steel plate 5 is the distance between the two side plates 3;

[0041] The left and right side plates 3 are connected to the channel steel plate 5 and the web of the square steel pipe column 1 by single-sided bolts;

[0042] The H-shaped steel beam 2 is just stuck between the two channel steel plates 5 and the two side plates 3 to form a reliable connection.

[0043] In another specific embodiment of the present invention, the side plate is provided with long bolt holes for movable fixing bolts.

[0044] like Figure 4 As shown, a long bolt hole 6 is provided at the connection between the side plate 3 and the channel steel plate 5. The single-sided bolts of the connection parts between the side plate 3 and the channel steel plate 5 can slide freely up and down, so that the beam height can be changed within a certain range.

[0045] like Figure 4 As shown, the connection between the side plate 3 and the web of the pipe column is provided with a bolt hole 4. The bolt hole 4 is used to fix the single-sided bolt 7 of the connection piece between the side plate 3 and the pipe column.

[0046] In another specific embodiment of the present invention, the sleeve plate is provided with long bolt holes for movable fixing bolts.

[0047] like Figure 5 As shown, long bolt holes 6 are provided at the connection between the upper and lower flanges of the upper and lower channel steel plates 5 and the H-shaped steel beam 2. The high-strength bolts of the connection parts of the channel steel plates 5 and the H-shaped steel beam 2 in the long bolt holes 6 can slide freely left and right, thereby allowing the width of the beam to vary within a certain range.

[0048] like Figure 5 As shown, the connection between the channel steel plate 5 and the side plate 3 is also provided with a long bolt hole 6.

[0049] In another specific embodiment of the present invention, the positions and numbers of the bolt holes and the long bolt holes can be arranged by those skilled in the art according to actual needs.

[0050] The provision of the long bolt holes in another specific embodiment of the present invention increases the versatility of the node connection, reduces the requirements for component processing and construction accuracy, and greatly improves the construction positioning and installation efficiency.

[0051] In another specific embodiment of the present invention, a prefabricated device is provided, which has the above-mentioned beam-column node structure of the present invention. The beam-column node structure of the present invention can be widely used in the node connection between the column and the beam in the prefabricated structure. The structure here includes but is not limited to the connection between the square steel pipe and the H-shaped steel beam in the prefabricated steel structure.

[0052] The cross section of the square steel pipe column has more advantages than the H-shaped steel column, but because it is a closed cross section, it is not suitable to use ordinary high-strength bolts for installation. In the specific implementation of the present invention, the use of single-sided bolts solves the problem of closed cross sections being difficult to install; through the node connection method, the force performance of the single-sided bolts is improved, and the advantages of the strong shear resistance of the single-sided bolts are fully utilized, and then ordinary high-strength bolts are used for other installations, realizing the quick and easy installation of the square steel pipe column and the H-shaped steel beam. At the same time, the design of this node is more universal, greatly improving the installation efficiency and realizing node standardization.

[0053] In another specific embodiment of the present invention, a method for preparing a node structure of a beam column is provided, and the preparation method comprises the following steps:

[0054] Connect the sleeve plate and the beam with high-strength bolts;

[0055] Connect the side plate on one side to the web of the pipe column with single-sided bolts, and connect the sleeve plate with single-sided bolts;

[0056] Connect the side plate on the other side to the web of the pipe column with single-sided bolts, and connect the sleeve plate with single-sided bolts to complete the installation of the beam-column node structure.

[0057] The installation method of the node structure of the present invention may also include the steps of preparing side plates and channel steel plates in a factory, and opening holes at corresponding positions of pipe columns, beams and connectors.

Claims

1. A beam-column node structure, characterized in that: The node structure of the beam column comprises a pipe column, a beam and a connector, wherein the pipe column and the beam are vertically connected through the connector, the pipe column is a square steel pipe column, and the beam is an H-shaped steel beam; wherein, The connecting member includes two side plates and two sleeve plates, the side plates and sleeve plates are used as connecting members for fixing the pipe column and the beam, the sleeve plates are channel steel plates, the side plates are connected to the pipe column by single-sided bolts, the side plates are connected to the sleeve plates by single-sided bolts, and the sleeve plates are connected to the beam by high-strength bolts; The H-shaped steel beam is clamped between the two channel steel plates and the two side plates to form a reliable connection.

2. The node structure of the beam column according to claim 1, characterized in that: The sleeve plate has a predetermined distance from the flange of the pipe column.

3. The node structure of the beam column according to claim 2, characterized in that: The predetermined distance is 0.5 cm-1.5 cm.

4. The node structure of the beam column according to claim 3, characterized in that: The predetermined distance is 1 cm.

5. The node structure of beams and columns according to claim 1, characterized in that: The side plates are provided with long bolt holes for removable fixing bolts.

6. The node structure of beams and columns according to claim 5, characterized in that: Long bolt holes are arranged at the connection between the side plate and the sleeve plate.

7. The node structure of beams and columns according to claim 1, characterized in that: The sleeve plate is provided with long bolt holes for movable fixing bolts.

8. The node structure of beams and columns according to claim 7, characterized in that: Long bolt holes are provided at the connection between the sleeve plate and the beam and at the connection between the sleeve plate and the side plate.

9. The beam-column node structure according to claim 1, characterized in that: The side plate is connected to the web of the pipe column by single-sided bolts.

10. An assembled device, characterized in that: The assembled device has the node structure of the beam and column as described in any one of claims 1-9.

11. A method for preparing a node structure of a beam column according to any one of claims 1 to 9, characterized in that: The preparation method comprises the following steps: Connecting the sleeve plate to the beam with high-strength bolts; Connect the side plate on one side to the web of the pipe column with single-sided bolts, and then connect the sleeve plate with single-sided bolts; Connect the side plate on the other side to the web of the pipe column with single-sided bolts, and then connect the sleeve plate with single-sided bolts to complete the installation of the node structure.

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