Reinforcing steel structure at steel structure joint based on stadium space pipe truss

Abstract

The utility model discloses a reinforcing steel structure at a steel structure joint based on a stadium space pipe truss, which belongs to the technical field of steel structures and comprises an inner sleeve and a limiting component, two ends of the inner sleeve are respectively inserted into two steel pipes to be connected, and two limiting discs respectively matched with flange plates at the end parts of the two steel pipes are fixed in the middle of the inner sleeve; the limiting assembly comprises two limiting units arranged on the two steel pipes in a sleeving mode correspondingly, and the two limiting units abut against the two flange plates towards the limiting disc correspondingly. The inner sleeve is designed, the two ends of the inner sleeve are inserted into the two steel pipes to be connected respectively to support the inner walls of the steel pipes, the two limiting units can abut against the outer walls of the steel pipes and the flange plates, and the connecting stability and the structural strength of the flange plates and the limiting plates are further enhanced; the connecting strength of the connecting position of the steel pipes in the pipe truss is effectively enhanced, and the stability of the structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel structure technology, specifically to a reinforced steel structure at the joint of a steel structure based on a stadium space truss. Background Technology

[0002] In the construction of large-scale sports stadiums, the spatial tubular truss serves as the core load-bearing system of a long-span structure, and the connection strength of its steel pipe joints directly affects the safety and stability of the overall structure. Traditional tubular truss connections often employ direct flange butt joints or welding. However, flange connections have the following drawbacks: First, relying solely on bolts to fix the flange leaves the steel pipe ends without internal support, making them prone to stress concentration under dynamic loads, leading to deformation or even cracking at the connection. Second, the fastening of the flange to the outer wall of the steel pipe depends on a single bolt structure, which is insufficient to effectively distribute external loads and has inadequate shear resistance. Third, the connection nodes lack multi-directional reinforcement design, making them susceptible to structural loosening due to fatigue effects during long-term use. Utility Model Content

[0003] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a reinforced steel structure for the steel structure connection of a stadium space truss. By designing an inner sleeve and limiting components, an internal and external limiting support is formed at the steel pipe connection, thereby increasing the connection strength.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a reinforced steel structure at the steel structure connection of a stadium space truss, comprising:

[0005] An inner sleeve is provided, with its two ends inserted into two steel pipes to be connected. Flanges are fixed to the ends of the steel pipes. Two limiting discs, which mate with the two flanges respectively, are fixed in the middle of the inner sleeve. The limiting discs are bolted to the flanges.

[0006] The limiting assembly includes two limiting units respectively fitted onto two steel pipes. The two limiting units respectively press the two flanges against the limiting plate, and the two limiting units are fixedly connected by bolts.

[0007] Preferably, the limiting unit includes two half-shells, and ear plates are fixed on both sides of the half-shells. The ear plates on the two half-shells are connected by bolts.

[0008] Preferably, the two half-shells fit together to form a hollow frustum shape, with the larger end of the half-shell closer to the flange.

[0009] Preferably, a plurality of wedge blocks are provided between the half shell and the steel pipe. When the two limiting units are connected, the half shell presses the wedge blocks against the outer wall of the steel pipe and the flange.

[0010] Preferably, multiple guide rails are fixed on the inner side of the semi-shell, and the wedge block is movably installed in the guide rails.

[0011] Preferably, a connecting ring is fixed at one end of the half-shell near the limiting plate, and the connecting ring is located on the side of the flange away from the inner sleeve.

[0012] Preferably, two corresponding connecting rings located on two steel pipes are fixedly connected to two limiting discs by a plurality of first bolts. The plurality of first bolts pass through the two limiting discs and the two corresponding connecting rings and are evenly distributed circumferentially with the axis of the limiting disc as the center.

[0013] Preferably, the two flanges and the two limiting plates are fixedly connected by a plurality of second bolts, all of which pass through the two flanges and the two limiting plates, and the first bolts and the second bolts are staggered.

[0014] Preferably, a plurality of reinforcing plates are fixed on the inner sleeve between the two limiting discs, and the plurality of reinforcing plates are radially distributed, with the two ends of the reinforcing plates respectively fixedly connected to the two limiting discs.

[0015] Preferably, each of the reinforcing plates is located between adjacent first and second bolts.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention features an inner sleeve with both ends inserted into the two steel pipes to be connected, providing support for the inner walls of the pipes. Two limiting units abut against the outer walls of the pipes and the flange, further enhancing the connection stability and structural strength between the flange and the limiting units. This effectively strengthens the connection strength at the pipe joints in the truss and improves the structural stability. The limiting unit comprises two half-shells that cooperate to form a hollow frustum. When the two limiting units are locked, the half-shells compress a wedge-shaped block, causing it to abut against the flange and the outer wall of the pipe, enhancing the deformation resistance at the pipe-flange connection. Multiple reinforcing plates fixed between the two limiting units effectively support the limiting units, further improving structural strength. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1A schematic diagram illustrating the practical application of the reinforced steel structure at the joint of the steel structure based on the space truss of a stadium, provided as an embodiment of this utility model.

[0020] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0021] Figure 3 for Figure 1 A magnified view of a section at point B in the middle.

[0022] Figure 4 This is a top view of the overall structure of this utility model.

[0023] Figure 5 for Figure 4 Sectional view at point AA.

[0024] Figure 6 for Figure 4 Sectional view at point BB.

[0025] Figure 7 This is a perspective view of the inner sleeve in this utility model.

[0026] Figure 8 This is a schematic diagram of the fit of the half-shell in this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Pipe truss, 2. Steel pipe, 3. Flange, 4. Inner sleeve, 5. Limiting plate, 6. Limiting unit, 7. Half shell, 8. Ear plate, 9. Wedge block, 10. Guide rail, 11. Connecting ring, 12. First bolt, 13. Second bolt, 14. Reinforcing plate, 15. Third bolt. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figures 1 to 8 As shown, Embodiment 1 of this utility model proposes a reinforced steel structure at the steel structure connection of a stadium space truss 1, including an inner sleeve 4 and a limiting component. The inner sleeve 4 provides internal support for the steel pipe 2, while the limiting component provides external support for the steel pipe 2. Figure 3As shown, this reinforced steel structure is suitable for steel pipes 2 connected by flanges at the ends of the tubular truss 1. Specifically, two limiting discs 5 are fixed in the middle of the inner sleeve 4, with a certain gap between the two limiting discs 5. The two ends of the inner sleeve 4 can be inserted into the two steel pipes 2 to be connected, respectively. The flanges 3 welded to the ends of the steel pipes 2 are connected to the two limiting discs 5 by six second bolts 13. The six second bolts 13 are evenly distributed circumferentially around the centerline of the inner sleeve 4. Each second bolt 13 can pass through the two flanges 3 and the two limiting discs 5. Through the above arrangement, the initial connection of the two steel pipes 2 is achieved. The inner sleeve 4 is partially inserted into the steel pipe 2, which can support the steel pipe 2 from the inside and prevent the ends of the steel pipe 2 from bending and deforming.

[0032] like Figure 2 , Figure 4 and Figure 8 As shown, the limiting component designed in this utility model includes two limiting units 6 respectively sleeved on two steel pipes 2. The two limiting units 6 are fixedly connected by six first bolts 12. The first bolts 12 are also evenly distributed circumferentially around the axis of the flange 3, but the first bolts 12 and the second bolts 13 are staggered.

[0033] When the first bolt 12 locks the two limiting units 6, the limiting unit 6 can abut against the flange 3 from the side of the flange 3 away from the limiting plate 5, thereby cooperating with the limiting plate 5 to abut against the outer wall of the steel pipe 2 and the flange 3 from the outside, further forming a connection limiting for the two steel pipes 2. Through the double limiting connection between the inner sleeve 4 and the limiting unit 6, the structure at the connection of the steel pipes 2 of the truss 1 is strengthened, and the structural strength of the connection is improved.

[0034] Example 2:

[0035] Based on Embodiment 1, this utility model proposes a specific structural design for the limiting unit 6. For example... Figure 8 As shown, the limiting unit 6 is composed of two half-shells 7 spliced ​​together, with ear plates 8 symmetrically welded on both sides of the half-shells 7. The ear plates 8 on the two half-shells 7 are locked together by a third bolt 15, fixing the two half-shells 7 into a hollow frustum-shaped component. When it is fitted onto the steel pipe 2, its larger end is located on the side closer to the flange 3.

[0036] like Figure 5 As shown, multiple wedge blocks 9 are set in the gap between the half shell 7 and the steel pipe 2. When the two limiting units 6 are locked, the two half shells 7 are squeezed towards the flange 3. This squeezing makes the wedge blocks 9 have a force that presses against the outer wall of the steel pipe 2 and the flange 3, forming a combined radial and axial compressive force, which further enhances the deformation resistance of the connection between the steel pipe 2 and the flange 3.

[0037] like Figure 5As shown, a connecting ring 11 is welded to the outer edge of the half-shell 7 near the limiting disc 5. When the two limiting units 6 are tightened, the connecting ring 11 is located on the side of the flange 3 away from the inner sleeve 4. Six circumferentially evenly distributed first bolts 12 fix the connecting rings 11 on the two steel pipes 2 to the two limiting discs 5. Figure 5 As can be seen, each first bolt 12 penetrates both limiting discs 5 and the connecting rings 11 on both sides. From Figure 6 As can be seen, the first bolt 12 and the second bolt 13 are staggered to form a double bolt fixing system, which disperses stress concentration.

[0038] Example 3:

[0039] Based on Embodiments 1 and 2, Embodiment 3 further optimizes the structure of the limiting unit 6. Multiple guide rails 10 are welded inside the semi-shell 7, and multiple wedge blocks 9 are movably installed within the guide rails 10. This ensures that the wedge blocks 9 can move uniformly along the axial direction of the steel pipe 2, preventing the wedge blocks 9 from deflecting. The guide rails 10 themselves can also abut against the surface of the steel pipe 2.

[0040] To further strengthen the connection between the inner sleeve 4 and the limiting disc 5, twelve radially distributed reinforcing plates 14 are welded to the outer wall of the inner sleeve 4 between the two limiting discs 5. Figure 7 As shown, the reinforcing plate 14 is welded and fixed to two limiting discs 5 at both ends. Figure 6 As shown, each reinforcing plate 14 is located between the adjacent first bolt 12 and second bolt 13 to avoid interference with the bolt installation position. At the same time, the reinforcing plate 14 forms a radial support structure, which significantly improves the bending stiffness of the limiting plate 5 and disperses the axial load.

[0041] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A reinforced steel structure at the joint of a steel structure based on a stadium space truss, characterized in that, include: An inner sleeve is provided, with its two ends inserted into two steel pipes to be connected. Flanges are fixed to the ends of the steel pipes. Two limiting discs, which mate with the two flanges respectively, are fixed in the middle of the inner sleeve. The limiting discs are bolted to the flanges. The limiting assembly includes two limiting units respectively fitted onto two steel pipes. The two limiting units respectively press the two flanges against the limiting plate, and the two limiting units are fixedly connected by bolts.

2. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 1, characterized in that, The limiting unit includes two half-shells, and ear plates are fixed on both sides of the half-shells. The ear plates on the two half-shells are connected by bolts.

3. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 2, characterized in that, The two half-shells fit together to form a hollow frustum shape, with the larger end of the half-shell closer to the flange.

4. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 3, characterized in that, Multiple wedge-shaped blocks are provided between the semi-shell and the steel pipe. When the two limiting units are connected, the semi-shell presses the wedge-shaped blocks against the outer wall of the steel pipe and the flange.

5. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 4, characterized in that, Multiple guide rails are fixed to the inner side of the semi-shell, and the wedge block is movably installed in the guide rails.

6. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 2, characterized in that, A connecting ring is fixed to one end of the half-shell near the limiting plate, and the connecting ring is located on the side of the flange away from the inner sleeve.

7. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 6, characterized in that, Two corresponding connecting rings located on two steel pipes are fixedly connected to two limiting discs by multiple first bolts. The multiple first bolts pass through the two limiting discs and the two corresponding connecting rings and are evenly distributed circumferentially with the axis of the limiting disc as the center.

8. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 7, characterized in that, The two flanges and the two limiting plates are fixedly connected by a plurality of second bolts, all of which pass through the two flanges and the two limiting plates, and the first bolts and the second bolts are staggered.

9. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 8, characterized in that, Multiple reinforcing plates are fixed on the inner sleeve between the two limiting discs. The multiple reinforcing plates are radially distributed, and the two ends of the reinforcing plates are respectively fixedly connected to the two limiting discs.

10. The reinforced steel structure at the joint of the steel structure based on the stadium space truss as described in claim 9, characterized in that, Each of the reinforcing plates is located between the adjacent first bolt and second bolt.

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