A device for reinforcing a welded hollow spherical joint

Abstract

The application discloses a device for reinforcing a welded hollow spherical joint. The existing welded hollow spherical joint has problems of too many components, complex installation and insufficient spherical reinforcement. The application comprises a welded hollow sphere, steel pipes arranged on the top and bottom of the welded hollow sphere, and the connecting line of the steel pipes is arranged on the axis of the hollow sphere; a left and right sleeve-t rib combined reinforcing piece is arranged on the surface of the hollow sphere, and the left and right sleeve-t rib combined reinforcing pieces are symmetrically arranged with the connecting line of the two steel pipes as the center; and the left sleeve-t rib combined reinforcing piece and the right sleeve-t rib combined reinforcing piece are fixedly connected through friction type high-strength bolts. The application can be processed and manufactured in a factory, and is welded with a sleeve piece to form a combined prefabricated component, and then two combined reinforcing pieces are installed on the welded hollow spherical joint through full bolt connection, so that the installation is quick and the reinforcing construction efficiency can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of reinforcement technology for welded hollow spherical joints in large-span spatial structures, and specifically relates to a device for reinforcing welded hollow spherical joints. Background Technology

[0002] Welded hollow sphere joints are a reliable form of spatial joint, widely used in various large-span grid structures in my country due to their good applicability and economy. However, with the passage of time, stress corrosion, chemical corrosion, and renovation / expansion projects during design, construction, or use often lead to insufficient load-bearing capacity in the space frame joints, severely reducing the safety, applicability, and durability of the structure. Historically, numerous large-span spatial structures have collapsed both domestically and internationally, causing enormous casualties and property losses. Therefore, strengthening existing welded hollow sphere space frame joints is an urgent problem facing practical engineering projects.

[0003] Existing methods for reinforcing hollow spherical joints mostly involve welding ribs to the outside of the sphere. However, on-site welding presents numerous problems, such as long construction time, inconsistent weld quality, and high welding difficulty, thus affecting construction quality. Furthermore, multiple existing welds at the joint make further welding impractical. Prefabricated reinforcement methods effectively avoid these drawbacks. Therefore, some researchers have developed prefabricated welded hollow spherical joint reinforcement devices, such as the prefabricated reinforcement device with adjustable rib positions invented by An Yi et al. (CN 113235731A). This device consists of two upper and lower clamping components, four outer rib assemblies, four steel gaskets, and eight high-strength bolts. Assembling such a device at height is extremely difficult. Moreover, because the rib and bolt positions are adjustable, the bolts may not be installed in their designed positions. Additionally, the large number of components increases the risk of falling from height, posing a danger to ground workers. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a device for reinforcing welded hollow spherical nodes, solving the problems of excessive components, complex installation, and insufficient spherical reinforcement in welded hollow sphere reinforcement and existing prefabricated reinforcement devices.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A device for reinforcing welded hollow sphere joints, characterized in that: it includes a welded hollow sphere, wherein steel pipes are respectively provided at the top and bottom of the welded hollow sphere, and the line connecting the top and bottom steel pipes is arranged on the axis of the welded hollow sphere;

[0007] The surface of the welded hollow sphere is provided with a left sleeve-T rib combination reinforcement and a right sleeve-T rib combination reinforcement, which are symmetrically arranged with the line connecting the two steel pipes as the center.

[0008] The left sleeve-T rib combination reinforcement and the right sleeve-T rib combination reinforcement are fixedly connected by friction-type high-strength bolts.

[0009] Furthermore, the left sleeve-T-rib combination reinforcement includes a T-rib web, which is semi-circular with the same radius as the welded hollow sphere; T-rib flanges are provided on both sides of the T-rib web, and the T-rib flanges are in contact with the surface of the welded hollow sphere; and semi-circular upper left sleeve and lower left sleeve are provided at both ends of the T-rib web.

[0010] The right-side hoop-T-rib combination reinforcement component has the same structure as the left-side hoop-T-rib combination reinforcement component. The right-side hoop-T-rib combination reinforcement component includes a T-rib web, a T-rib flange, a right-side upper hoop, and a right-side lower hoop.

[0011] Furthermore, both the left upper sleeve and the right upper sleeve are provided with bolt hole one, bolt hole two, bolt hole three, and bolt hole four;

[0012] Both the left and right lower sleeves are provided with bolt holes five, six, seven, and eight.

[0013] Furthermore, a steel adhesive layer is provided between the left sleeve-T rib combination reinforcement member, the right sleeve-T rib combination reinforcement member, and the steel pipe.

[0014] Furthermore, connecting lugs are provided on both sides of the left upper sleeve, right upper sleeve, left lower sleeve and right lower sleeve, and steel gaskets are provided between the connecting lugs on both sides.

[0015] The beneficial effects of this invention are:

[0016] 1) This invention can be manufactured in the factory and welded with the sleeve to form a prefabricated component. Then, the two combined reinforcement components are installed on the welded hollow spherical node by bolt connection. On the one hand, the curved flange of the T-rib can fit well with the spherical surface to limit the deformation of the spherical surface.

[0017] 2) The angle of the T-rib of the present invention is variable. For complex connection methods of welded hollow ball joints in actual situations, T-ribs with different angles can be designed according to the angle between the pipes. Multiple sleeve-T-rib components are arranged on the joint and then connected by friction-type high-strength bolts, which can reinforce the joint spherical surface in various directions.

[0018] 3) The invention has a simple structure, is easy to arrange at nodes and quick to install, which can greatly improve the efficiency of reinforcement construction and save engineering costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural view of a device for reinforcing welded hollow spherical nodes according to the present invention;

[0020] Figure 2 This is a perspective view of the main component of a device for reinforcing welded hollow spherical joints according to the present invention, showing a sleeve-T-shaped rib structure.

[0021] Figure 3 This is a side view of a device structure for reinforcing welded hollow spherical nodes according to the present invention;

[0022] Figure 4 This is a top view of a device structure for reinforcing welded hollow spherical joints according to the present invention;

[0023] Figure 5 This is an assembly diagram of a device for reinforcing welded hollow spherical nodes according to the present invention;

[0024] In the figure, 1. t rib flange, 2. t rib web, 3. left upper sleeve, 4. left lower sleeve, 5. steel pipe, 6. welded hollow ball, 7. friction type high strength bolt, 10. right upper sleeve, 11. right lower sleeve, 12. steel gasket, 14. steel adhesive layer. Detailed Implementation

[0025] The present invention will now be described in detail with reference to specific embodiments.

[0026] The reinforcing device of this invention uses a material with the same or similar specifications as the welded hollow spherical node being reinforced; such as... Figure 1 , 5 As shown, the present invention includes a welded hollow sphere 6, with steel pipes 5 respectively provided at the top and bottom of the welded hollow sphere 6, and the line connecting the top and bottom steel pipes 5 is arranged on the axis of the welded hollow sphere 6.

[0027] The surface of the welded hollow sphere 6 is provided with a left sleeve-T-rib combination reinforcement and a right sleeve-T-rib combination reinforcement. The left sleeve-T-rib combination reinforcement and the right sleeve-T-rib combination reinforcement are symmetrically arranged with the line connecting the two steel pipes 5 as the center. The left sleeve-T-rib combination reinforcement and the right sleeve-T-rib combination reinforcement are fixedly connected by friction type high-strength bolts 7. The sleeve-T-rib combination reinforcement is a prefabricated component assembled into one piece by welding in the factory in advance. The two sleeve-T-rib combination components are arranged on both sides of the main force direction of the welded hollow sphere node.

[0028] The sleeve-T-rib combination reinforcement can be prefabricated with T-ribs of different angles according to the actual reinforcement needs on site, and can be combined in different ways or arranged in different directions. Generally, two sleeve-T-rib combination reinforcements are set at each node and arranged in the direction of the main load-bearing steel pipe to maximize the reinforcement effect.

[0029] like Figure 2 As shown, the left sleeve-t rib combination reinforcement includes a t rib web plate 2, which is semi-circular with the same radius as the welded hollow sphere 6; t rib flanges 1 are provided on both sides of the t rib web plate 2, and the t rib flanges 1 are in contact with the surface of the welded hollow sphere 6; semi-circular upper left sleeve 3 and lower left sleeve 4 are provided at both ends of the t rib web plate 2.

[0030] The right-side hoop-T-rib combination reinforcement component has the same structure as the left-side hoop-T-rib combination reinforcement component. The right-side hoop-T-rib combination reinforcement component includes T-rib web 2, T-rib flange 1, right upper hoop 10 and right lower hoop 11. The hoop is a semi-circular ring component, which can be spliced ​​with the other half of the hoop to form a ring.

[0031] The left upper sleeve 3, the right upper sleeve 10, the left lower sleeve 4, and the right lower sleeve 11 are each provided with connecting lugs on both sides, and steel shims 12 are provided between the connecting lugs on both sides; such as Figure 4 As shown, a steel adhesive layer 14 is provided between the left sleeve-t rib combination reinforcement, the right sleeve-t rib combination reinforcement and the steel pipe 5;

[0032] During installation, steel shims can be used to fine-tune the gap between the sleeve and the pipe fitting. The steel shims are placed at the joint of the two semi-circular sleeves, and two bolt holes are provided on the steel shims, corresponding to the bolt holes on the sleeve ear plate. The gap between the sleeve and the pipe fitting is adjusted appropriately to ensure that the sleeve and the pipe fitting are in full contact and form an effective friction area. At the same time, the inner surface of the sleeve is roughened, and steel adhesive is applied to the contact surface between the steel pipe and the sleeve during installation to ensure the friction between the sleeve and the steel pipe.

[0033] like Figure 3 As shown, bolt holes 1-701, 2-702, 3-703, and 4-704 are provided on the upper sleeve 3 on the left and the upper sleeve 10 on the right; bolt holes 5-705, 6-706, 7-707, and 8-708 are provided on the lower sleeve 4 on the left and the lower sleeve 11 on the right.

[0034] The assembly method of the device for reinforcing welded hollow spherical joints according to the present invention is as follows:

[0035] The first step is to process the sleeve-T-rib combination reinforcement in advance, mainly by welding the four parts: T-rib flange 1, T-rib web 2, left upper sleeve 3, and left lower sleeve 4, and drilling bolt holes on the left upper sleeve 3 and left lower sleeve 4.

[0036] The second step is to place the two sleeve-T-rib combination reinforcements on both sides of the spherical surface to be reinforced, align the bolt holes of the upper and lower sleeves, and place the web of the T-rib tightly against the spherical surface. Use high-strength bolts 7 to pass through the upper sleeve 3, steel washer 12, and upper sleeve 10 in sequence and connect them. Then continue to use high-strength bolts to pass through the bolt holes of other sleeves, steel washers, and sleeves and connect them.

[0037] Finally, after the entire device is connected, tighten the high-strength bolts one by one.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The content of this invention is not limited to the embodiments listed. Any equivalent modifications made by those skilled in the art to the technical solutions of this invention by reading this specification are covered by the claims of this invention.

Claims

1. An assembly method for a device for reinforcing welded hollow spherical joints, characterized in that: Includes the following steps: Step 1: Process the clamp-t-rib combination reinforcement; The second step is to place the two sleeve-t rib combination reinforcement components on both sides of the spherical surface to be reinforced, align the bolt holes of the upper and lower sleeves, and place the web of the t rib tightly against the spherical surface. Use high-strength bolts (7) to pass through the upper sleeve (3) on the left side, the steel washer (12), and the upper sleeve (10) on the right side in sequence and connect them. Then continue to use high-strength bolts (7) to pass through the bolt holes of other sleeves and steel washers and connect them. Finally, after the entire device is connected, tighten the high-strength bolts one by one. The device for reinforcing the welded hollow sphere node includes a welded hollow sphere (6), with steel pipes (5) respectively provided at the top and bottom of the welded hollow sphere (6), and the line connecting the top and bottom steel pipes (5) is located on the axis of the welded hollow sphere (6). The surface of the welded hollow sphere (6) is provided with a left sleeve-t rib combination reinforcement and a right sleeve-t rib combination reinforcement, which are symmetrically arranged with the line connecting the two steel pipes (5) as the center. The left sleeve-t rib combination reinforcement and the right sleeve-t rib combination reinforcement are fixedly connected by friction type high strength bolts (7); The left sleeve-t rib combination reinforcement includes a t rib web (2), which is semi-circular with the same radius as the welded hollow sphere (6); t rib flanges (1) are provided on both sides of the t rib web (2), and the t rib flanges (1) are in contact with the surface of the welded hollow sphere (6); semi-circular upper left sleeve (3) and lower left sleeve (4) are provided at both ends of the t rib web (2). The right-side hoop-T-rib combination reinforcement has the same structure as the left-side hoop-T-rib combination reinforcement. The right-side hoop-T-rib combination reinforcement includes a T-rib web (2), a T-rib flange (1), a right-side upper hoop (10), and a right-side lower hoop (11).

2. The assembly method of the device for reinforcing welded hollow spherical joints according to claim 1, characterized in that: The left upper sleeve (3) and the right upper sleeve (10) are provided with bolt holes one (701), two (702), three (703) and four (704). Bolt holes five (705), six (706), seven (707), and eight (708) are provided on both the left lower sleeve (4) and the right lower sleeve (11).

3. The assembly method of the device for reinforcing welded hollow spherical nodes according to claim 1, characterized in that: A steel adhesive layer (14) is provided between the left sleeve-t rib combination reinforcement, the right sleeve-t rib combination reinforcement and the steel pipe (5).

4. The assembly method of the device for reinforcing welded hollow spherical nodes according to claim 2, characterized in that: The left upper sleeve (3), right upper sleeve (10), left lower sleeve (4) and right lower sleeve (11) are respectively provided with connecting ear plates on both sides, and steel gaskets (12) are provided between the connecting ear plates on both sides.

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