A K-type bolt ball joint reinforced with spliced ​​hub

Abstract

This invention provides a K-shaped bolt ball joint reinforced with a splicing hub, comprising a first chord, a second chord, a first support, and a second support connected to the bolt ball. A sealed splicing hub is provided on the outside of the bolt ball, and a layer of grout is provided inside the splicing hub. The splicing hub is fitted around the outer periphery of the bolt ball and connected to the first chord, second chord, first support, and second support. The layer of grout fills the gaps between the splicing hub and the bolt ball, the first chord, the second chord, the first support, and the second support. This invention, by incorporating the splicing hub, significantly improves the load-bearing capacity and deformation resistance of the K-shaped bolt ball joint, substantially enhances its strength and stiffness, and effectively constrains the ends of the K-shaped bolt ball joint, chord, and support, thereby enhancing the ductility and energy dissipation capacity of the joint. The overall structure is safer and more reliable, improving seismic resistance and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of K-bolt ball joint reinforcement technology, specifically relating to a K-bolt ball joint reinforced with spliced ​​hub. Background Technology

[0002] K-shaped bolt ball joint space frame structures are widely used in large-span spatial structures such as large public buildings, industrial plants, and stadiums due to their advantages such as clear force distribution, aesthetically pleasing appearance, and convenient construction. Among them, the K-shaped joint, as a common joint type, directly affects the safety of the overall structure in terms of its load-bearing performance.

[0003] However, in actual engineering projects, due to factors such as increased design loads, material aging, construction defects, or changes in usage functions, the original K-bolt ball joints may experience insufficient load-bearing capacity. In particular, under repeated dynamic loads (such as wind vibration and earthquakes), stress concentration is prone to occur in the joint area, leading to accumulated fatigue damage and threatening structural safety.

[0004] Currently, the reinforcement of existing K-bolt ball joints typically involves methods such as bonding steel plates, adding ribs, or replacing the entire joint. These traditional methods have significant limitations: bonding steel plates is poorly adaptable to complex curved surfaces of the joint, and the reliability of the bonding is difficult to guarantee; welding ribs introduces new welding thermal stress and has high requirements for the material of the original ball joint, resulting in significant construction risks; while replacing the entire joint requires interrupting the use of the structure, has a long construction period, is costly, and may cause secondary damage to surrounding members.

[0005] Therefore, there is an urgent need for a new type of reinforcement technology that can effectively improve the static bearing capacity and fatigue resistance of joints, while also having the advantages of convenient construction, minimal interference with the original structure, high reliability, and good adaptability, in order to overcome the shortcomings of existing reinforcement methods. Utility Model Content

[0006] The technical problem this invention aims to solve is to address the shortcomings of the prior art by providing a K-shaped bolt ball joint reinforced with a splicing hub. This structure, by incorporating a splicing hub, significantly improves the load-bearing capacity and deformation resistance of the K-shaped bolt ball joint, substantially enhances its strength and stiffness, and effectively constrains the ends of the K-shaped bolt ball joint, chord members, and support members. This enhances the ductility and energy dissipation capacity of the joint, resulting in a safer and more reliable overall structure with improved seismic resistance and reliability.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a K-shaped bolt ball joint reinforced with a splicing hub, characterized in that the K-shaped bolt ball joint includes a first chord, a second chord, a first support rod, and a second support rod respectively connected to the bolt ball; a sealed splicing hub is provided on the outside of the bolt ball; a layer of grouting material is provided inside the splicing hub; the splicing hub is sleeved on the outer periphery of the bolt ball and connected to the first chord, the second chord, the first support rod, and the second support rod; the layer of grouting material fills the gap between the splicing hub and the bolt ball, the first chord, the second chord, the first support rod, and the second support rod.

[0008] The aforementioned K-shaped bolt ball joint reinforced with a splicing hub is characterized in that the splicing hub comprises three arc-shaped plates, namely a semi-cylindrical first arc-shaped plate, a quarter-cylindrical second arc-shaped plate, and a third arc-shaped plate. Both ends of the first, second, and third arc-shaped plates are provided with fan-shaped fixed edges. The splicing hub also includes two end plates that cooperate with the three arc-shaped plates, and each end plate comprises two semi-circular first end plates and second end plates.

[0009] The aforementioned K-shaped bolt ball joint reinforced with splicing hub is characterized in that the second arc plate and the third arc plate are each provided with a semi-circular support rod hole that cooperates with the first support rod and the second support rod, and the first end plate and the second end plate are each provided with a semi-circular chord rod hole that cooperates with the first chord rod and the second chord rod.

[0010] The above-mentioned K-shaped bolt ball joint reinforced with splicing hub is characterized in that the first arc plate, the second arc plate and the third arc plate are fixed to the first end plate and the second end plate by fixing edges and bolts, the first arc plate, the second arc plate and the third arc plate are fixed by welding, and the first end plate and the second end plate are provided with interconnected buckles, and the first end plate and the second end plate are fixed by welding.

[0011] The above-mentioned K-shaped bolt ball joint reinforced with splicing hub is characterized in that the first support rod and the second support rod are welded and fixed to the support rod hole, and the first end plate and the second end plate are welded and fixed to the chord hole.

[0012] The aforementioned K-shaped bolt ball joint reinforced with splicing hub is characterized in that the bottom of the first arc plate is provided with a grouting hole, and the top of the second or third arc plate is provided with an venting hole.

[0013] The above-mentioned K-shaped bolt ball joint reinforced with splicing hub is characterized in that a fixing ring is also installed on the first end plate, and a cable for providing tension to the splicing hub is installed on the fixing ring.

[0014] The aforementioned K-shaped bolt ball joint reinforced with spliced ​​hub is characterized in that shear keys are provided on the inner sides of the first arc plate, the second arc plate and the third arc plate.

[0015] This utility model has the following advantages compared with the prior art: 1. By setting up a splicing hub, this utility model greatly improves the load-bearing capacity and deformation resistance of the K-bolt ball joint, significantly enhances the strength and stiffness of the K-bolt ball joint, and effectively constrains the ends of the K-bolt ball joint, chord, and support, thereby enhancing the ductility and energy dissipation capacity of the joint. The overall structure is safer and more reliable, and its seismic resistance and reliability are improved.

[0016] 2. This utility model improves the stress performance by filling the splicing hub with interlayer grout, avoids stress concentration, and makes the stress on the joint more reasonable and uniform. In addition, the sealed splicing hub and interlayer grout form a protective cover, which isolates the internal K-bolt ball joint and chord and support rod from the external corrosive environment, greatly improving the durability of the K-bolt ball joint.

[0017] 3. This utility model splits the splicing hub into three arc-shaped plates and two end plates, enabling the splicing hub to be prefabricated in the factory and assembled on site, making it suitable for on-site reinforcement operations. Furthermore, this modular design allows it to flexibly adapt to K-bolt ball joints of different angles and positions, providing excellent construction convenience and adaptability.

[0018] In summary, this utility model fundamentally improves the performance of traditional K-bolt ball joints through a composite reinforcement method of external splicing hub and interlayer grouting material. It provides a modular, on-site construction-ready, efficient and reliable K-bolt ball joint reinforcement solution. By using splicing hub and interlayer grouting material, it comprehensively enhances the strength, stiffness, durability and seismic performance of traditional joints, solves the weaknesses in the existing technology, and has high engineering application value.

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the K-shaped bolt ball joint structure reinforced with spliced ​​hubs according to this utility model.

[0021] Figure 2 This is a schematic diagram showing the connection relationship between the splicing hub and the K-shaped bolt ball joint of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the first arc-shaped plate of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the second arc-shaped plate of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the third arc-shaped plate of this utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the first end plate of this utility model.

[0026] Figure 7 This is a schematic diagram of the structure of the second end plate of this utility model.

[0027] Figure 8 This is a schematic diagram showing the connection relationship between the first arc plate, the second arc plate, and the third arc plate of this utility model and the shear key.

[0028] Explanation of reference numerals in the attached figures: Detailed Implementation

[0029] like Figure 1 and Figure 2 As shown, a K-shaped bolt ball joint reinforced with a splicing hub according to this utility model includes a first chord 2, a second chord 3, a first support 4, and a second support 5 respectively connected to a bolt ball 1. A sealed splicing hub 6 is provided on the outside of the bolt ball 1, and a sandwich grout is provided inside the splicing hub 6. The splicing hub 6 is sleeved on the outer periphery of the bolt ball 1 and connected to the first chord 2, the second chord 3, the first support 4, and the second support 5. The sandwich grout fills the gap between the splicing hub 6 and the bolt ball 1, the first chord 2, the second chord 3, the first support 4, and the second support 5.

[0030] It should be noted that by setting the splicing hub 6, the load originally borne solely by the K-bolt ball joint is transformed into a load borne jointly by the K-bolt ball joint and the splicing hub 6. This greatly improves the load-bearing capacity and deformation resistance of the K-bolt ball joint, significantly enhances its strength and stiffness, and effectively constrains the ends of the K-bolt ball joint, chord members, and supports, thereby enhancing the ductility and energy dissipation capacity of the joint. It performs better under dynamic loads such as earthquakes, making the overall structure safer and more reliable, and improving seismic resistance and reliability. By filling the splicing hub 6 with interlayer grout, the stress performance is improved, stress concentration is avoided, and the stress on the joint is made more reasonable and uniform. Furthermore, the sealed splicing hub 6 and the interlayer grout form a protective cover, isolating the internal K-bolt ball joint, chord members, and supports from the external corrosive environment, greatly improving the durability of the K-bolt ball joint.

[0031] like Figures 3-5As shown, in this embodiment, the splicing hub 6 includes three arc-shaped plates, namely a semi-cylindrical first arc-shaped plate 7, a quarter-cylindrical second arc-shaped plate 8, and a third arc-shaped plate 9. The first arc-shaped plate 7, the second arc-shaped plate 8, and the third arc-shaped plate 9 are all provided with fan-shaped fixed edges 10 at both ends. The splicing hub 6 also includes two end plates that cooperate with the three arc-shaped plates. Each end plate includes two semi-circular first end plates 11 and second end plates 12.

[0032] It should be noted that by splitting the splicing hub 6 into three arc-shaped plates and two end plates, the splicing hub 6 can be prefabricated in the factory and assembled on site. This avoids the high precision requirements and installation difficulties caused by making a single complex-shaped component, making it suitable for on-site reinforcement operations. Furthermore, this modular design allows it to flexibly adapt to K-bolt ball joints of different angles and positions, providing excellent construction convenience and adaptability.

[0033] like Figure 4 and Figure 5 As shown, in this embodiment, the second arc plate 8 and the third arc plate 9 are both provided with semi-circular support rod holes 13 that cooperate with the first support rod 4 and the second support rod 5, and the first end plate 11 and the second end plate 12 are both provided with semi-circular string rod holes 14 that cooperate with the first string rod 2 and the second string rod 3.

[0034] It should be noted that by setting the support rod hole 13 and the chord hole 14, installation space is reserved for both the chord and the support rod, which facilitates the installation of the splicing hub 6, achieves precise positioning of the splicing hub 6, and ensures that the support rod and the chord are accurately fixed and clamped, thus guaranteeing the contact area between the support rod and the chord and the splicing hub 6, and providing conditions for the effective transmission of force.

[0035] like Figures 1-5 As shown, in this embodiment, the first arc plate 7, the second arc plate 8, and the third arc plate 9 are fixed to the first end plate 11 and the second end plate 12 by fixing edge 10 and bolt 15. The first arc plate 7, the second arc plate 8, and the third arc plate 9 are fixed by welding. The first end plate 11 and the second end plate 12 are provided with interconnected buckles. The first end plate 11 and the second end plate 12 are fixed by welding.

[0036] It should be noted that by setting a fixed edge 10 perpendicular to the arc plate, it is easy to fix it to the end plate with bolts 15. By setting a buckle, it is easy to pre-assemble and clamp the first end plate 11 and the second end plate 12 onto the chord. By welding and fixing the first arc plate 7, the second arc plate 8 and the third arc plate 9, and welding and fixing the first end plate 11 and the second end plate 12, the overall sealing and structural integrity of the splicing hub 6 are guaranteed, forming a solid closed structure and ensuring that the interlayer grouting material will not leak out.

[0037] In this embodiment, the first support rod 4 and the second support rod 5 are welded and fixed to the support rod hole 13, and the first end plate 11 and the second end plate 12 are welded and fixed to the chord hole 14.

[0038] It should be noted that by welding the support rod to the support rod hole 13 and welding the end plate to the chord hole 14, the splicing hub 6 and the K-bolt ball joint form an integral structure, realizing a rigid connection from the rod to the splicing hub 6. They work together to maximize the reinforcement effect and form a solid closed structure, ensuring that the interlayer grouting material will not leak out.

[0039] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the bottom of the first arc-shaped plate 7 is provided with a grouting hole 16, and the top of the second arc-shaped plate 8 or the third arc-shaped plate 9 is provided with a venting hole 17.

[0040] It should be noted that by setting grouting holes 16 for injecting interlayer grout, and setting vent holes 17 to expel air during the grouting process, and by controlling the positions of grouting holes 16 and vent holes 17, the grouting holes 16 are located at the bottom of the splicing hub 6 and the vent holes 17 are located at the top of the splicing hub 6. This ensures that the interlayer grout naturally fills the entire interlayer space from the bottom up, completely expelling the internal air, ensuring the grout is dense, preventing the formation of voids or air bubbles, thereby ensuring the continuity and integrity of the interlayer grout, and avoiding the problem of reduced reinforcement effect due to defects such as pores.

[0041] like Figure 1 and Figure 2 As shown, in this embodiment, a fixing ring 18 is also installed on the first end plate 11, and a cable for providing tension to the splicing hub 6 is installed on the fixing ring 18.

[0042] It should be noted that by setting the fixing ring 18 and the cable, tensile force is applied to the area outside the K-bolt ball joint, which actively improves the stiffness and bearing capacity of the K-bolt ball joint, effectively offsets the tensile stress generated by the external load, significantly improves the stress performance of the joint, especially greatly enhances the fatigue resistance, offsets part of the adverse load generated by the splicing hub 6 and the interlayer grouting material, and significantly improves the stress state of the K-bolt ball joint.

[0043] like Figure 8 As shown, in this embodiment, anti-shear keys 19 are provided on the inner sides of the first arc plate 7, the second arc plate 8 and the third arc plate 9.

[0044] It should be noted that by setting the shear key 19, the mechanical interlocking and shear force transmission between the splicing hub 6 and the interlayer grout are enhanced, the connection performance of the interface between the two materials of the splicing hub 6 and the interlayer grout is improved, and the relative slippage between the two under the ultimate load is prevented, so as to ensure that the interlayer grout and the splicing hub 6 work together and share the force.

[0045] In actual use, the first arc-shaped plate 7, the second arc-shaped plate 8, the third arc-shaped plate 9, the first end plate 11, and the second end plate 12 are first pre-fabricated in the factory and transported to the construction site. The two sets of first end plates 11 and second end plates 12 are then installed on the chords on both sides of the K-bolt ball joints that need reinforcement using snap fasteners. Then, the first arc-shaped plate 7, the second arc-shaped plate 8, and the third arc-shaped plate 9 are installed sequentially using bolts 15. The joints between the first arc-shaped plate 7, the second arc-shaped plate 8, and the third arc-shaped plate 9 are then connected to the first... Weld the joint between end plate 11 and the second end plate 12. Then weld the first support rod 4 and the second support rod 5 to the support rod hole 13 and fix them together. Weld the first end plate 11 and the second end plate 12 to the chord hole 14 and fix them together. Then install the cable on the fixing ring 18 on the first end plate 11 and fix it to the area outside the K-bolt ball joint. Then inject the interlayer grout into the splicing hub 6 through the grouting hole 16. After the interlayer grout has solidified, the reinforcement of the K-bolt ball joint is completed. The operation is simple and easy to promote and apply.

[0046] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any simple modifications, alterations, and equivalent changes made to the above embodiments based on the technical essence of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A K-shaped bolt ball joint reinforced with a spliced ​​hub, characterized in that, The K-shaped bolt ball joint includes a first chord (2), a second chord (3), a first support (4), and a second support (5) connected to the bolt ball (1). A sealed splicing hub (6) is provided on the outside of the bolt ball (1), and a sandwich grout is provided inside the splicing hub (6). The splicing hub (6) is sleeved on the outer periphery of the bolt ball (1) and connected to the first chord (2), the second chord (3), the first support (4), and the second support (5). The sandwich grout fills the gap between the splicing hub (6) and the bolt ball (1), the first chord (2), the second chord (3), the first support (4), and the second support (5).

2. A K-shaped bolt ball joint reinforced with a spliced ​​hub according to claim 1, characterized in that, The splicing hub (6) includes three arc-shaped plates, namely a semi-cylindrical first arc-shaped plate (7), a quarter-cylindrical second arc-shaped plate (8), and a third arc-shaped plate (9). The first arc-shaped plate (7), the second arc-shaped plate (8), and the third arc-shaped plate (9) are provided with fan-shaped fixed edges (10) at both ends. The splicing hub (6) also includes two end plates that cooperate with the three arc-shaped plates. Each end plate includes two semi-circular first end plates (11) and second end plates (12).

3. A K-shaped bolt ball joint reinforced with a spliced ​​hub according to claim 2, characterized in that, The second arc plate (8) and the third arc plate (9) are each provided with a semi-circular support rod hole (13) that cooperates with the first support rod (4) and the second support rod (5). The first end plate (11) and the second end plate (12) are each provided with a semi-circular chord rod hole (14) that cooperates with the first chord rod (2) and the second chord rod (3).

4. A K-shaped bolt ball joint reinforced with a spliced ​​hub according to claim 2, characterized in that, The first arc plate (7), the second arc plate (8) and the third arc plate (9) are fixed to the first end plate (11) and the second end plate (12) by fixing edge (10) and bolt (15). The first arc plate (7), the second arc plate (8) and the third arc plate (9) are fixed by welding. The first end plate (11) and the second end plate (12) are provided with interconnected buckles. The first end plate (11) and the second end plate (12) are fixed by welding.

5. A K-shaped bolt ball joint reinforced with a spliced ​​hub according to claim 3, characterized in that, The first support rod (4) and the second support rod (5) are welded and fixed to the support rod hole (13), and the first end plate (11) and the second end plate (12) are welded and fixed to the chord hole (14).

6. A K-shaped bolt ball joint reinforced with a spliced ​​hub according to claim 2, characterized in that, The bottom of the first arc plate (7) is provided with a grouting hole (16), and the top of the second arc plate (8) or the third arc plate (9) is provided with an exhaust hole (17).

7. A K-shaped bolt ball joint reinforced with a spliced ​​hub according to claim 2, characterized in that, A fixing ring (18) is also installed on the first end plate (11), and a cable for providing tension to the splicing hub (6) is installed on the fixing ring (18).

8. A K-shaped bolt ball joint reinforced with a spliced ​​hub according to claim 2, characterized in that, Shear keys (19) are provided on the inner sides of the first arc plate (7), the second arc plate (8) and the third arc plate (9).

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