Hoop reinforcing structure and method for welding hollow sphere joint

Abstract

The invention discloses a hoop reinforcing structure and method for welding a hollow sphere joint, and belongs to the technical field of steel structure reinforcing. Comprising a welding hollow sphere joint, a reinforcing piece, structural adhesive, a stud and a tightening piece. The welding hollow ball joint is composed of a hollow ball and a plurality of round pipes, hollow ball holes and round pipe holes are formed in the surfaces of the hollow ball and the round pipes respectively, reinforcing pieces are arranged in the junction areas of the hollow ball and the round pipes, the reinforcing pieces and the welding hollow ball are connected through structural adhesive, the reinforcing pieces are fixed to the surface of the hollow ball through studs, and tightening pieces are arranged on the surface of the reinforcing pieces in a staggered mode. The tightening piece is formed by splicing common bolts. The reinforcing piece and the tightening piece are mechanically designed and industrially produced. The influence of site construction difficulty and welding residual stress is reduced, through quadruple protection of the structural adhesive, the clamping piece, the stud and the tightening piece, it can be ensured that the reinforcing piece is tightly attached to the welded hollow sphere joint, and the bearing capacity, durability and safety of the welded hollow sphere joint are effectively improved.

Description

Technical Field

[0001] The invention relates to a method for reinforcing a hoop of a welded hollow spherical node, and belongs to the technical field of steel structure reinforcement. Background Art

[0002] Welded hollow spherical nodes are widely used in large-span space steel structures and are favored for their superior mechanical performance and convenient construction. However, as the service life of the structure increases, welded hollow spherical nodes gradually develop problems such as rust, defects and eccentricity, resulting in the degradation of the structural performance of the node connection area, and reinforcement and transformation are required to improve the node bearing capacity.

[0003] At present, the reinforcement method of welded hollow spherical nodes is mainly based on welding. However, the welding process is complicated, the quality of on-site welding is difficult to guarantee, and stress concentration and cracks are prone to occur in the heat-affected zone of welding. In order to avoid the problems caused by welding, An Yi, Li Mingtao and others invented an assembled reinforcement device with adjustable rib position (patent number: CN113235731A) and a device for reinforcing welded hollow spherical nodes (patent number: CN 117287062A). However, these reinforcement devices cannot effectively reinforce all node connection areas when facing welded hollow spherical nodes with multiple circular tubes in actual projects. The cross arrangement of the ribs is complicated, and the connection between the ribs and the hollow spheres is not reliable enough, and the reinforcement effect is limited. Therefore, it is particularly important to develop a universal assembled reinforcement method. Summary of the invention

[0004] The present invention aims to develop a method for reinforcing a welded hollow ball node with a clamp. The quadruple protection of structural adhesive, clips, bolts and clamps in the invention ensures that the reinforcement fits tightly with the welded hollow ball node, establishes a reliable connection, effectively reinforces each node area, and improves the bearing capacity and durability of the welded hollow ball node.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A method for reinforcing a welded hollow ball node by a hoop, specifically comprising a welded hollow ball node, a reinforcement piece, a structural adhesive, a stud and a clamp. The welded hollow ball node is composed of a hollow ball and a plurality of round tubes, the hollow ball and the round tube surfaces are respectively provided with hollow ball holes and round tube holes, a reinforcement piece is arranged at the junction area between the hollow ball and the round tube, the reinforcement piece and the welded hollow ball are connected by structural adhesive, the reinforcement piece is fixed to the surface of the hollow ball by studs, and a clamp piece is staggered on the surface of the reinforcement piece, and the clamp piece is spliced ​​by ordinary bolts.

[0007] Furthermore, the welded hollow ball node is composed of a hollow ball and a plurality of round tubes, the hollow ball is provided with a certain size and number of hollow ball holes in the node connection area, and the round tube is provided with a certain size and number of round tube holes in the node connection area.

[0008] Furthermore, the hollow ball holes and the circular tube holes are mechanically drilled, the hole shape is cylindrical, and the size of the hole can be flexibly adjusted. The hollow ball holes are arranged in a ring along the surface of the hollow ball, with a total of 6 holes, and the circular tube holes have a total of 4 rows, with 3 holes in each row.

[0009] Furthermore, the reinforcement member is composed of a clamp and two reinforcement plates. The clamp is pre-welded to the inner surface of the reinforcement plate in the factory. The clamp is in the shape of a cylinder, slightly smaller than the circular tube hole. The reinforcement plate is designed and processed according to the shape of the node connection area, and the surface in contact with the hollow ball is provided with three cylindrical holes.

[0010] Furthermore, the reinforcement plates are connected by structural adhesive and welded hollow balls, and the bonding process ensures that the clamps are aligned with the circular tube holes to prevent sliding.

[0011] Furthermore, the reinforcement plate is fixed to the surface of the hollow sphere by means of bolts, and the bolts may be self-tapping screws or hexagonal bolts, so as to achieve the effect of tight connection between the reinforcement piece and the welded hollow sphere node.

[0012] Furthermore, the clamping member comprises two common bolts and two annular plates. The clamping member is formed by splicing the two annular plates together through the common bolts, and is staggeredly clamped with the reinforcement member to fix the reinforcement member.

[0013] Furthermore, the reinforcement method comprises the following steps:

[0014] 1) Mechanically drill and surface treat the welded hollow spherical nodes on site to ensure the accuracy of the holes and the surface finish;

[0015] 2) Use professional measuring tools to accurately measure the size of the welded hollow spherical node, including diameter, thickness and other related parameters;

[0016] 3) According to the measured dimensions of the welded hollow spherical nodes, the reinforcements and fasteners are precisely processed in the factory to ensure that the sizes and shapes of the reinforcements and fasteners fully meet the design requirements so as to seamlessly match the nodes measured on site;

[0017] 4) Apply structural adhesive evenly on the surface of the reinforcement, and initially stick the reinforcement on the welded hollow ball node through the clamp;

[0018] 5) Use high-strength studs to further fix the reinforcement to the surface of the hollow sphere, and use professional tools to ensure that the studs are firmly installed to enhance the connection between the reinforcement and the welded hollow sphere node.

[0019] 6) Use the clamp to further tighten the reinforcement piece on the welded hollow spherical node. Use ordinary bolts to splice the two annular plates together and tighten them with the reinforcement piece in an staggered manner to achieve the best fixing and reinforcement effect.

[0020] Beneficial effects of the present invention:

[0021] 1. The reinforcing members and the clamping members in the present invention are standard parts with small specifications, and can be mass-produced in factories, with the advantages of simple processing and convenient assembly.

[0022] 2. In the present invention, only a small amount of mechanical drilling is required, and the reinforcement process of the welded hollow spherical node does not involve welding process, and there is no welding residual stress, which has little impact on the existing welded hollow spherical node.

[0023] 3. The four-fold protection of structural adhesive, clamps, bolts and fasteners in the present invention ensures that the reinforcement fits tightly with the welded hollow ball node, establishes a reliable connection, effectively reinforces each node area, and improves the bearing capacity and durability of the welded hollow ball node. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the device of the present invention;

[0025] Figure 2 It is a schematic diagram of a welded hollow sphere node;

[0026] Figure 3 It is the detailed drawing of the circular hole in the node junction area;

[0027] Figure 4 It is a schematic diagram of a welded hollow sphere node with a hole;

[0028] Figure 5 It is the reinforcement detail drawing;

[0029] Figure 6 It is the detailed drawing of the reinforcement installation;

[0030] Figure 7 It is a schematic diagram of reinforcement installation;

[0031] Figure 8 It is the detail drawing of the fastening member;

[0032] Fig. 9 It is the installation detail drawing of the fastening parts;

[0033] Fig.10 It is a schematic diagram of the overall reinforcement of welded hollow spherical nodes.

[0034] In the figure, 1. welded hollow ball node, 2. reinforcement, 3. structural adhesive, 4. studs, 5. clamps, 6. hollow ball, 7. round tube, 8. hollow ball hole, 9. round tube hole, 10. ordinary bolts, 11. clamps, 12. reinforcement plates, 13. annular plates. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-10 The present invention is applicable to a method for reinforcing a hollow spherical node with a clamp. Figure 1-10 Shown in.

[0036] The present embodiment provides a method for reinforcing a welded hollow ball node with a clamp, which belongs to the technical field of steel structure reinforcement. Specifically, it comprises a welded hollow ball node (1), a reinforcement piece (2), a structural adhesive (3), a stud (4) and a clamp (5). The welded hollow ball node (1) is composed of a hollow ball (6) and a plurality of circular tubes (7). The surfaces of the hollow ball (6) and the circular tube (7) are respectively provided with hollow ball holes (8) and circular tube holes (9). A reinforcement piece (2) is provided at the junction area between the hollow ball (6) and the circular tube (7). The reinforcement piece (2) and the welded hollow ball (1) are connected by means of a structural adhesive (3). The reinforcement piece (2) is fixed to the surface of the hollow ball (6) via a stud (4). A clamp (5) is staggered on the surface of the reinforcement piece (2). The clamp (5) is formed by splicing ordinary bolts (10). The schematic diagram of the invention device is shown in FIG. Figure 1 shown.

[0037] In this embodiment, the welded hollow sphere node (1) is composed of a hollow sphere (6) and a plurality of round tubes (7). The schematic diagram of the welded hollow sphere node is shown in FIG. Figure 2 shown.

[0038] In this embodiment, the welded hollow ball node (1) is provided with a certain size and number of hollow ball holes (8) and circular tube holes (9) in the node connection area. These holes are all mechanically drilled, and the hole shape is cylindrical. The size of the hole can be flexibly adjusted. The hollow ball holes (8) are arranged in a ring shape along the surface of the hollow ball (6), with a total of 6 holes. The circular tube holes (9) are arranged in 4 rows, with 3 holes in each row. The detailed diagram of the circular holes in the node junction area is as follows: Figure 3 The schematic diagram of the welded hollow sphere node with hole is shown in Figure 4 shown.

[0039] In this embodiment, the reinforcement member (2) is composed of a clamp (11) and two reinforcement plates (12). The clamp (11) is pre-welded to the inner surface of the reinforcement plate (12) in the factory, and its shape is cylindrical, slightly smaller than the size of the circular tube hole (9). The reinforcement plate (12) is designed and processed according to the shape of the node connection area, and is provided with three cylindrical holes on the surface in contact with the hollow ball (6). Figure 5 .

[0040] In this embodiment, the reinforcing plate (12) is connected to the welded hollow ball (1) by structural adhesive (3) to ensure that the clamp (11) is aligned with the circular tube hole (9) to prevent sliding. The reinforcing plate (12) is fixed to the surface of the hollow ball (6) by studs (4). The studs (4) can be self-tapping screws or hexagonal bolts to achieve a tight connection between the reinforcing member (2) and the welded hollow ball node (1). The installation details of the reinforcing member are shown in Figure 6 , the installation diagram of the reinforcement is shown in Figure 7 .

[0041] In this embodiment, the clamp (5) is composed of two ordinary bolts (10) and two annular plates (13). The clamp (5) is connected to the two annular plates (13) by ordinary bolts (10). Figure 8 The tightening member (5) and the reinforcing member (2) are staggered and tightened to fix the reinforcing member (2). Fig. 9 .

[0042] The above reinforcement method comprises the following steps:

[0043] 1) Mechanically drill and surface treat the welded hollow spherical node (1) on site to ensure hole accuracy and surface finish;

[0044] 2) Use professional measuring tools to accurately measure the dimensions of the welded hollow spherical node (1), including diameter, thickness and other relevant parameters;

[0045] 3) According to the measured size of the welded hollow spherical node (1), the reinforcement member (2) and the clamp member (5) are precisely processed in the factory to ensure that the size and shape of the reinforcement member (2) and the clamp member (5) fully meet the design requirements so as to seamlessly match the node measured on site;

[0046] 4) Evenly apply the structural adhesive (3) on the surface of the reinforcement member (2), and preliminarily adhere the reinforcement member (2) to the welded hollow spherical node (1) through the clamp (11);

[0047] 5) Use high-strength studs (4) to further fix the reinforcement member (2) on the surface of the hollow ball (6), and use professional tools to ensure that the studs (4) are firmly installed to strengthen the connection between the reinforcement member (2) and the welded hollow ball node (1).

[0048] 6) The reinforcing member (2) is further tightened on the welded hollow spherical node (1) by means of a tightening member (5). The two annular plates (13) are spliced ​​together using ordinary bolts (10) and staggered with the reinforcing member (2) to achieve the best fixing and reinforcement effect. The overall reinforcement diagram of the welded hollow spherical node is shown in FIG. Fig.10 shown.

[0049] The above is only an embodiment of a method for reinforcing a welded hollow spherical node with a clamp of the present invention, and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A hoop reinforcement structure for a welded hollow spherical node, characterized in that: The invention comprises a welded hollow ball node (1), a reinforcement member (2), a structural adhesive (3), a stud (4) and a clamp (5); the welded hollow ball node (1) is composed of a hollow ball (6) and a plurality of round tubes (7); the surfaces of the hollow ball (6) and the round tube (7) are respectively provided with a hollow ball hole (8) and a round tube hole (9); a reinforcement member (2) is arranged at the junction area between the hollow ball (6) and the round tube (7); the reinforcement member (2) and the welded hollow ball (1) are connected by means of a structural adhesive (3); the reinforcement member (2) is fixed to the surface of the hollow ball (6) by means of a stud (4); the surface of the reinforcement member (2) is provided with a clamp (5) in a staggered manner; and the clamp (5) is formed by splicing ordinary bolts (10).

2. The hoop reinforcement structure of a welded hollow spherical node according to claim 1, characterized in that: The welded hollow ball node (1) is composed of a hollow ball (6) and a plurality of circular tubes (7); the hollow ball (6) is provided with a certain size and number of hollow ball holes (8) in the node connection area; and the circular tube (7) is provided with a certain size and number of circular tube holes (9) in the node connection area.

3. The hoop reinforcement structure of a welded hollow spherical node according to claim 2, characterized in that: The hollow ball holes (8) and the circular tube holes (9) are mechanically drilled holes, the hole shape is cylindrical, and the size of the hole can be adjusted; the hollow ball holes (8) are arranged in a ring shape along the surface of the hollow ball (6), with a total of 6 holes, and the circular tube holes (9) have a total of 4 rows, with 3 holes in each row.

4. The hoop reinforcement structure of a welded hollow spherical node according to claim 1, characterized in that: The reinforcing member (2) is composed of a clamp (11) and two reinforcing plates (12). The clamp (11) is pre-welded to the inner surface of the reinforcing plate (12) in the factory. The clamp (11) is in the shape of a cylinder, slightly smaller than the circular tube hole (9). The reinforcing plate (12) is designed and processed according to the shape of the node connection area, and the surface in contact with the hollow ball (6) is provided with three cylindrical holes.

5. The hoop reinforcement structure of a welded hollow spherical node according to claim 1, characterized in that: The reinforcing plate (12) is connected via a structural adhesive (3) and a welded hollow ball (1), and the bonding process ensures that the clamping piece (11) is aligned with the circular tube hole (9), thereby preventing sliding.

6. The hoop reinforcement structure of a welded hollow spherical node according to claim 1, characterized in that: The reinforcing plate (12) is fixed to the surface of the hollow sphere (6) via studs (4), wherein the studs (4) are self-tapping screws or hexagonal bolts, thereby achieving a tight connection between the reinforcing member (2) and the welded hollow sphere node (1).

7. The hoop reinforcement structure of a welded hollow spherical node according to claim 1, characterized in that: The clamping member (5) comprises two common bolts (10) and two annular plates (13). The clamping member (5) is formed by splicing the two annular plates (13) together through the common bolts (10) and is staggeredly clamped with the reinforcing member (2) to fix the reinforcing member (2).

8. A method for realizing a hoop reinforcement structure of a welded hollow spherical node as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: 1) Mechanically drill and surface treat the welded hollow spherical node (1) on site to ensure hole accuracy and surface finish; 2) Use professional measuring tools to accurately measure the dimensions of the welded hollow spherical node (1), including diameter and thickness; 3) According to the measured size of the welded hollow spherical node (1), the reinforcement member (2) and the clamp member (5) are precisely processed in the factory to ensure that the size and shape of the reinforcement member (2) and the clamp member (5) fully meet the design requirements so as to seamlessly match the node measured on site; 4) Evenly apply the structural adhesive (3) on the surface of the reinforcement member (2), and preliminarily adhere the reinforcement member (2) to the welded hollow spherical node (1) through the clamp (11); 5) Use high-strength studs (4) to further fix the reinforcement member (2) on the surface of the hollow ball (6), and use professional tools to ensure that the studs (4) are firmly installed to strengthen the connection between the reinforcement member (2) and the welded hollow ball node (1); 6) Further tightening the reinforcement member (2) on the welded hollow spherical node (1) by means of a tightening member (5); The two annular plates (13) are spliced ​​together using common bolts (10) and staggeredly clamped with the reinforcement member (2). Thereby achieving the effect of fixing and reinforcement.

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