A cruciform-shaped cross-section four-way steel column structure and a manufacturing method thereof

Abstract

The present application belongs to the technical field of building steel structure, and particularly relates to a cruciform special-shaped cross four-branch steel column structure and a manufacturing method thereof, which is composed of a main straight section and a four-branch conversion node, and is internally provided with stiffening plates. The main plates are connected with each other by full penetration welds, the straight section and the conversion node are connected by full bolt connection design, and the conversion node and the corresponding structure are connected by full bolt connection design, which greatly improves the installation efficiency on site. In the structural design, the feasibility of structural welding is fully considered, the welding quality is guaranteed, the overall structure meets the stress requirement, and the appearance fully shows the modeling characteristics of the cruciform. The design of the conversion node solves the stress design and modeling design of the structure of the cruciform modeling column converted to the beam. The present application solves the problems of design and manufacturing of the cruciform special-shaped cross four-branch steel column structure, and has the advantages of reasonable structural design, beautiful appearance modeling, strong practicality and the like.

Description

Technical Field

[0001] This invention relates to the field of steel structure buildings, specifically to a cross-shaped irregular cross section four-branched steel column structure and its manufacturing method. Background Technology

[0002] The application and promotion of steel structure buildings in the construction industry is increasing, especially in stadiums, airports and other venue-type buildings. Stadium-type buildings often have higher requirements for structural appearance, and steel structures have the advantages of superior safety performance, beautiful appearance and strong plasticity.

[0003] For stadium-type steel structures, the roof is often a large-span truss or beam structure. When considering the structural form of the steel columns, we not only consider the aesthetics of the shape, but also pay attention to the perfect integration of the aesthetics of the structure and the structural force. The irregular steel columns and corresponding transition nodes should be optimized to achieve effective force transmission and ensure the structural safety. This case arises from this.

[0004] In view of this, the applicant provides a cross-shaped irregular cross section four-branched steel column structure and its processing and manufacturing method. Summary of the Invention

[0005] This invention first discloses a cross-shaped irregular cross section four-branched steel column structure, which is mainly used for the design of irregular steel columns and transition nodes. It can realize the effective transmission of force in the node and ensure the stress safety of the node structure.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A cross-shaped irregular cross-section four-branched steel column structure includes a main straight section, a four-branched transition node, and stiffening plates. The main straight section includes a top connecting plate, a bottom connecting plate, and a relatively closed main body formed by fourteen flat panels and four arc-shaped panels connected in sequence. Stiffening plates are installed inside the main body. The top connecting plate is embedded in the main body at the top port, and the bottom connecting plate is connected to the outside of the main body at the bottom port. The main body has an irregular cross-section, and handhole plates are provided at the end panel positions. The four-branched transition node includes a central main box, four bifurcated irregular arched cross-section bent-torsional legs, and end connecting plates. The main straight section and the four-branched transition node are connected by bolts.

[0008] Furthermore, the fourteen planar panels are divided into a first motherboard, a second motherboard, a third motherboard, a fourth motherboard, a fifth motherboard, a sixth motherboard, a seventh motherboard, and an eighth motherboard according to their position type. The second motherboard is connected to the third and fourth motherboards. The fifth and sixth motherboards are connected to the first and second motherboards. The seventh motherboard is positioned opposite the first and second motherboards. The eighth motherboard is positioned at the four corners and is connected to the first and third motherboards, the first and fourth motherboards, and the two seventh motherboards, respectively.

[0009] Furthermore, the four arc-shaped panels are positioned at the four corners, ultimately forming the cross-shaped cross section of the main body.

[0010] Furthermore, the stiffening plates are disposed within each cavity of the cross-section and arranged parallel to the cross-section.

[0011] Furthermore, the top connecting plate is disposed inside the main body section, and the bottom connecting plate is disposed outside the main body section.

[0012] Furthermore, the four-branched conversion node includes a central main box, four branched irregular arched cross-section bent-torsion support legs connected to the central main box, a stiffening plate inside, and a connecting plate and a hand hole plate at the end.

[0013] Furthermore, the central main box is connected by four arc-shaped plates, with a gradually changing cross-section, arc-shaped edges, and an overall trapezoidal structure.

[0014] Furthermore, the bifurcated irregular arched cross-section bending and twisting leg is composed of two side flanges, a middle web plate, and an arc-shaped semicircle, and its cross-section is a variable cross-section arch shape.

[0015] Furthermore, the two side wing plates are pentagonal bent and twisted plates, one of which is a rounded edge.

[0016] The second objective of this invention is to provide a method for fabricating a cross-shaped, irregularly shaped, four-branched steel column structure, comprising the following steps:

[0017] Step 1: Part blanking, pre-forming of bent and twisted plates, semi-circular arc tubes, bent plates, etc., and flame-corrected forming of bent and twisted plates according to the sample size drawing.

[0018] Step 2, the semi-circular arc tube is formed in the following way: ①. Cut intermittent cutting grooves in the length direction of the whole round tube according to the required arc tube size, cut 300mm, leave 100mm connecting bridge uncut, after cold bending treatment, cut off the connecting bridge, which ensures that bending is feasible, avoids bending deformation, and at the same time ensures the free edge size, and facilitates cutting and forming after bending.

[0019] Step 3, the main body straight section assembly and welding steps are as follows: ①~⑥:

[0020] ①. The first main board of the straight section of the main body is in place and laid flat on the jig;

[0021] ②. Assemble the fifth main plate, the sixth main plate, the web plates on both sides, and the connecting plates at the top and bottom. Weld the fifth main plate, the sixth main plate, and the first main plate together. Weld the main plates together with the connecting plates at the top and bottom together. Achieve full penetration connection.

[0022] ③. Assemble the internal stiffening plates and weld them;

[0023] ④. Assemble the second, third, and fourth motherboards, and weld the inner connecting welds and the connecting plates to the top and bottom;

[0024] ⑤. Assemble the seventh motherboard and perform soldering;

[0025] ⑥. Assemble the eighth motherboard and perform soldering;

[0026] ⑦. Assemble the curved plates at the four corners. After welding, grind the exposed weld seams.

[0027] ⑧. Assemble the end handhole plate.

[0028] Step four, the assembly and welding steps for the four-branch conversion node are as follows: ⑨~⑩

[0029] 9. Assemble and weld the middle section of the box according to the dimensions, ensuring full penetration of the weld seams;

[0030] ⑩. After leveling the middle box, assemble the irregularly shaped arched cross-section bent-torsion legs on both sides in sequence. According to the ground pattern jig, assemble the bent-torsion plates and curved semi-circular tubes on both sides. Precisely control the accuracy of the intermediate transition position and the end dimensions; assemble the end handhole plates and the connecting plates at each end.

[0031] The cross-shaped, irregularly shaped, four-branched steel column structure designed in this invention consists of two parts: a main straight section and a transition node. The designed transition node and special cross-section form combine the rigidity of sharp angles with the aesthetic appeal of rounded edges. The structure exhibits excellent load-bearing capacity and clear force transmission, achieving good load-bearing performance without increasing steel plate thickness. The cross-shaped special cross-section design, combined with the end bolt connection, not only meets structural load-bearing requirements but also eliminates welding procedures during on-site installation, improving construction efficiency and reducing costs. Furthermore, the connection design and fabrication scheme of the structural plates in this invention ensures welding efficiency and quality. In particular, the four-branched transition node is designed as a five-component structure consisting of a central box and four legs, reducing fabrication difficulty, lowering costs, and increasing efficiency. This invention is especially suitable for steel columns in stadiums and for steel column-to-roof connection structures. Attached Figure Description

[0032] Figure 1 This is an isometric view of the structure of the present invention;

[0033] Figure 2 This is an isometric view of the straight section of the main body of the invention;

[0034] Figure 3 This is a cross-sectional view of the straight section of the main body of the present invention;

[0035] Figure 4 Axonometric view of the four-branch transformation node;

[0036] Figure 5 An exploded view of the four-branch transition nodes;

[0037] Figure 6 This is a cross-sectional view of the support leg of the four-branched conversion node. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0039] This invention first discloses a cross-shaped irregular cross-section four-branched steel column structure, such as... Figures 1 to 6 As shown, its structure mainly includes a main straight section 1 (such as...) Figure 1 (Axonometric drawing) and four-fork transformation node 2 (e.g.) Figure 4 (Axonometric drawing), the main straight section 1 structure includes a top connecting plate 3, a bottom connecting plate 4, and fourteen flat panels (namely, first main plate 5, second main plate 6, third main plate 7, fourth main plate 8, fifth main plate 9, sixth main plate 10, seventh main plate 11, and eighth main plate 12), four curved panels 13, and internal stiffening plates 14. The curved panels are located at the four corners of the cross-section and connect with the flat panels, forming a structure as shown in the figure. Figure 3 The cross-shaped cross section shown is centrally symmetrical, adding to the aesthetic appeal of symmetry, roundness, and rigidity. The main planar panels and curved panels are connected and fixed by partial penetration welds with a penetration depth of 2t / 3, which meets the overall acceptance requirements. Handhole plates 15 are provided at the ends for on-site connection construction.

[0040] The four-branch transition node 2 forms four legs 16 by transforming the original straight sections at the four corners of the cross-shaped structure through a gradual change in cross-sectional size (from small to large) and a smooth horizontal extension of the corners. These legs are used to connect with the beam. This structural design achieves column-beam conversion, ensures a natural and smooth transition in the overall structural appearance, and provides reliable structural load-bearing capacity. A main box 17 is located in the middle of the four-branch transition node 2. The main box is connected by four curved plates 18. The box has a gradually changing cross-section and curved edges, forming a trapezoidal structure with a larger top and smaller bottom. This structure is designed to accommodate the deformation of the legs during conversion. The four legs are connected to the four sides of the main box. These legs are designed as irregularly shaped arched curved-twist legs with a gradually changing arched cross-section. The side panels 19 are curved-twist plates, and the curved semi-circular tubes 20 are connected to the side plates of the legs, achieving a smooth transition. To improve structural load-bearing capacity, an internal stiffening plate 21 is installed inside the main box, and handhole plates 22 and connecting plates 23 are installed at the ends.

[0041] This embodiment also discloses a method for manufacturing a cross-shaped cross-section four-branched steel column structure, including the following steps:

[0042] Step (1): Cut the part plate, pre-form the bent and twisted plate 19, semi-circular arc tube 20 and other plates, and flame correct the bent and twisted plate according to the ground sample size drawing.

[0043] Step (2), the semi-circular arc tube 20 is formed in the following way: ①. Cut the whole round tube into intermittent cutting grooves in the length direction according to the required arc tube size, cut 300mm, leave 100mm connecting bridge uncut, after cold bending treatment, cut the connecting bridge, which ensures that bending is feasible, avoids bending deformation, and at the same time ensures the free edge size, and facilitates cutting and forming after bending.

[0044] Step (3), the assembly and welding steps of the main straight section 1 are as follows: ①~⑧:

[0045] ①. The first main board 5 of the main straight section is in place and laid flat on the jig;

[0046] ②. Assemble the fifth main board 9, the sixth main board 10, the eighth main boards 12 on both sides, and the connecting plates 3 and 4 at the top and bottom. Weld the fifth main board 9, the sixth main board 10 and the first main board 5. Weld the main boards and the connecting plates 3 and 4 at the top and bottom. Achieve full penetration connection.

[0047] ③. Assemble the internal stiffening plate 14 and weld it;

[0048] ④. Assemble the second main board 6, the third main board 7, and the fourth main board 8, and weld the inner connecting welds and the connecting plates 3 and 4 to the top and bottom;

[0049] ⑤. Assemble the seventh motherboard 11 and perform soldering;

[0050] ⑥. Assemble the eighth motherboard 12 and perform soldering;

[0051] ⑦. Assemble the arc-shaped plates 13 at the four corners. After welding, grind the exposed weld seams.

[0052] ⑧. Assemble the end handhole plate 15.

[0053] Step (4), the assembly and welding steps of the four-branch conversion node 2 are as follows: ⑨~⑩:

[0054] ⑨. Assemble and weld the four arc-shaped plates 18 and stiffening plates 21, which are composed of the middle box body 17, according to the dimensions, and connect the welds with full penetration.

[0055] ⑩. After leveling the box body in the middle position, assemble the irregularly shaped arched cross-section bent-torsion support legs 18 on both sides in sequence. According to the ground pattern jig, assemble the bent-torsion plates 19 on both sides and the curved semi-circular tubes 20. Precisely control the accuracy of the intermediate transition position and the end dimension accuracy; assemble the end hand hole plates 22 and the connecting plates 23 at each end.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cross-shaped irregular cross-section four-branched steel column structure, characterized in that: The system includes a main straight section, a four-branched transition node, and stiffening plates. The main straight section comprises a top connecting plate, a bottom connecting plate, and a relatively closed main body formed by the sequential connection of fourteen flat panels and four curved panels. Stiffening plates are installed inside the main body. The top connecting plate is embedded within the main body at the top port, and the bottom connecting plate is connected to the outside of the main body at the bottom port. The main body has an irregular cross-shaped cross section, and handhole plates are provided at the end panels. The four-branched transition node includes a central main box body, four bifurcated irregular arched bending and torsion legs, and end connecting plates. The main straight section and the four-branched transition node are connected by bolts. The fourteen planar panels are classified into a first main board, a second main board, a third main board, a fourth main board, a fifth main board, a sixth main board, a seventh main board, and an eighth main board according to their position. The second main board is connected to the third and fourth main boards. The fifth and sixth main boards are connected to the first and second main boards. The seventh main board is positioned opposite the first and second main boards. The eighth main board is positioned at the four corners and is connected to the first and third main boards, the first and fourth main boards, and the two seventh main boards, respectively. The four arc-shaped panels are positioned at the four corners, which together form the cross-shaped cross section of the main body.

2. The cross-shaped irregular cross-section four-branched steel column structure according to claim 1, characterized in that: The stiffening plates are disposed within each cavity of the cross section and arranged parallel to the cross section.

3. The four-branched steel column structure with a cross-shaped cross section according to claim 1, characterized in that: The top connecting plate is located inside the main body section, and the bottom connecting plate is located outside the main body section.

4. The four-branched steel column structure with a cross-shaped cross section according to claim 1, characterized in that: The four-branched conversion node includes a central main box, four bifurcated irregular arched cross-section bent and twisted legs connected to the central main box, a stiffening plate inside, and a connecting plate and a hand hole plate at the end.

5. A four-branched steel column structure with a cross-shaped cross section according to claim 4, characterized in that: The central main box is connected by four arc-shaped plates. The cross-section of the box gradually changes, the edges are arc-shaped, and the overall structure is trapezoidal.

6. The four-branched steel column structure with a cross-shaped cross section according to claim 4, characterized in that: The bifurcated irregular arched cross-section bending and twisting leg is composed of two side flanges, a middle web plate, and an arc-shaped semicircle, and its cross-section is in the shape of a variable cross-section arch.

7. A four-branched steel column structure with a cross-shaped cross section according to claim 6, characterized in that: The two side wing plates are pentagonal bent and twisted plates, one of which is a rounded edge.

8. A method for manufacturing a four-branched steel column with a cross-shaped cross section as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Part blanking, pre-forming of bent and twisted plates, semi-circular arc tubes, bent plates, etc., and flame-forming of bent and twisted plates according to the sample size drawing; Step 2, the semi-circular arc tube is formed in the following way: ①. Cut intermittent cutting grooves in the length direction of the whole round tube according to the required arc tube size, cut 300mm, leave 100mm connecting bridge uncut, after cold bending treatment, cut off the connecting bridge, which ensures that bending is feasible, avoids bending deformation, and at the same time ensures the free edge size, and facilitates cutting and forming after bending. Step 3, the main body straight section assembly and welding steps are as follows: ①~⑥: ①. The first main board of the straight section of the main body is in place and laid flat on the jig; ②. Assemble the fifth main plate, the sixth main plate, the web plates on both sides, and the connecting plates at the top and bottom. Weld the fifth main plate, the sixth main plate, and the first main plate together. Weld the main plates together with the connecting plates at the top and bottom together. Achieve full penetration connection. ③. Assemble the internal stiffening plates and weld them; ④. Assemble the second, third, and fourth motherboards, and weld the inner connecting welds and the connecting plates to the top and bottom; ⑤. Assemble the seventh motherboard and perform soldering; ⑥. Assemble the eighth motherboard and perform soldering; ⑦. Assemble the curved plates at the four corners. After welding, grind the exposed weld seams. ⑧. Assemble the end handhole plate; Step four, the assembly and welding steps for the four-branch conversion node are as follows: ⑨~⑩ 9. Assemble and weld the middle section of the box according to the dimensions, ensuring full penetration of the weld seams; ⑩. After flattening the box in the middle position, assemble the irregular arched cross-section bent and twisted legs on both sides in sequence. According to the ground sample jig, assemble the bent and twisted plates and the curved semi-circular tubes on both sides; accurately control the accuracy of the middle transition position and the accuracy of the end dimensions; assemble the end hand hole plates and the connecting plates at each end.

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