A modular large-span steel structure with fully bolted hollow ball connection H-shaped steel node

Abstract

A modular large-span steel structure full-bolt hollow ball connected H-shaped steel node belongs to the field of large-span space steel structure, including a hollow upper hemisphere with an annular stiffening rib flange with a cantilever rod end, a hollow lower hemisphere with an annular stiffening rib flange with a cantilever rod end, and an upper flange extended H-shaped steel rod. At the construction site, the hollow upper hemisphere with an annular stiffening rib flange with a cantilever rod end and the hollow lower hemisphere with an annular stiffening rib flange with a cantilever rod end are connected with high-strength bolts, and then the upper flange extended H-shaped steel rod is overlapped with the hollow upper hemisphere with an annular stiffening rib flange with a cantilever rod end and the hollow lower hemisphere with an annular stiffening rib flange with a cantilever rod end and then connected with high-strength bolts. The chord of the large-span node of the present invention adopts an H-shaped steel open-section rod, which is convenient for bolting compared with closed-section rods such as round steel pipes and square steel pipes, and is convenient for overlapping the upper purlins of the large span. The present invention realizes the factory production of large-span nodes, avoids on-site welding, reduces carbon emissions, and ensures construction quality.

Description

Technical Field

[0001] The invention relates to a modular large-span steel structure full-bolt hollow ball connected H-shaped steel node, belonging to the field of large-span space steel structures. Background Art

[0002] Innovative research and development of modular, fully assembled, large-span steel structure systems based on intelligent and industrialized construction, through intelligent design, industrialized production and high-precision modular assembly construction, can achieve accurate and efficient assembly without welding on the construction site in the shortest time, while ensuring reliable structural performance, and realizing intelligent and industrialized construction of modular, fully assembled, large-span steel structure systems. This is a major demand for scientific and technological innovation in my country's construction industry, and is also an important guarantee for promoting the industrialization, digitalization, and intelligent upgrading of buildings, accelerating the transformation of construction methods, and promoting high-quality development of the construction industry. At present, the research on modular, fully assembled, large-span steel structure systems based on intelligent and industrialized construction is basically blank. The traditional large-span steel structure system has a low assembly rate, and on-site welding has problems such as large carbon emissions and difficulty in ensuring weld quality. Therefore, it is urgent to develop a modular large-span steel structure with fully bolted hollow balls connected to H-shaped steel nodes. Summary of the invention

[0003] In order to solve the problems of low on-site assembly rate of existing large-span steel structures, large carbon emissions from on-site welding, and environmental pollution, the present invention proposes a modular large-span steel structure with all-bolt hollow ball connection H-shaped steel node. The node chord adopts H-shaped steel open-section rods, which have certain construction advantages compared with closed-section rods such as round steel pipes, square steel pipes and rectangular steel pipes commonly used in actual engineering. The open section is convenient for welding and bolting, conforms to the research and development of prefabricated nodes, and is convenient for overlapping the upper purlins of large spans. The present invention realizes the intelligent design, industrialized production and high-precision modular assembly construction of large-span nodes, and realizes precise and efficient assembly and forming without welding on the construction site in the shortest time, while ensuring reliable structural performance.

[0004] A connection node suitable for modular fully assembled large-span steel structures, comprising an annular stiffening rib flange hollow upper hemisphere with a cantilever rod end (1), an annular stiffening rib flange hollow lower hemisphere with a cantilever rod end (2), and an upper flange extended type H-shaped steel rod (3); the annular stiffening rib flange hollow upper hemisphere with a cantilever rod end (1) comprises an annular stiffening rib flange hollow upper hemisphere (4) and an annular stiffening rib flange hollow upper hemisphere extended type cantilever rod end (5); the annular stiffening rib flange hollow lower hemisphere with a cantilever rod end (2) comprises an annular stiffening rib flange hollow lower hemisphere (6) and an annular stiffening rib flange hollow lower hemisphere extended type cantilever rod end (7).

[0005] One end of the hollow upper hemisphere of the annular stiffening rib flange (4) is welded to the hollow upper hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (5); one end of the hollow lower hemisphere of the annular stiffening rib flange (6) is welded to the hollow lower hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (7); the upper flange, the lower flange and the end plate of the hollow upper hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (5) are provided with bolt holes; the upper flange and the end plate of the hollow lower hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (7) are provided with bolt holes, and the outwardly extending lower flange portion is provided with Bolt holes; the upper flange, lower flange and end plate of the upper flange extended H-shaped steel member (3) are provided with bolt holes; when connecting, the hollow upper hemisphere (1) of the annular stiffening rib flange with the cantilever rod end and the hollow lower hemisphere (2) of the annular stiffening rib flange with the cantilever rod end are connected by high-strength bolts; the bolt holes of the upper flange extended H-shaped steel member (3) are overlapped with the bolt holes of the hollow upper hemisphere extended cantilever rod end (5) of the annular stiffening rib flange and the hollow lower hemisphere extended cantilever rod end (7) of the annular stiffening rib flange, and connected by high-strength bolts.

[0006] The upper flange extended H-shaped steel member (3) is formed by cutting away a portion of the lower flange and the corresponding web of the H-shaped steel member and then welding the end plates.

[0007] The annular stiffening rib flange hollow upper hemisphere (4) and the annular stiffening rib flange hollow lower hemisphere (6) are cast in a factory.

[0008] The annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) has corresponding arcs cut out of the upper flange, lower flange and web of the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) according to the arc of intersection of the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) and the annular stiffening rib flange hollow upper hemisphere (4), and bolt holes are set at corresponding positions of the upper flange, lower flange and end plate; the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) is formed in the factory by welding the upper flange, lower flange, web and end plate, and the cross-section is an inverted C-shape, and then it is welded with the annular stiffening rib flange hollow upper hemisphere (4) in the factory to form an annular stiffening rib flange hollow upper hemisphere (1) with a cantilever rod end.

[0009] The annular stiffening rib flange hollow lower hemisphere outward-extending cantilever rod end (7) cuts corresponding arcs on the upper flange, lower flange and web of the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (7) according to the arc of intersection of the annular stiffening rib flange hollow lower hemisphere outward-extending cantilever rod end (7) and the annular stiffening rib flange hollow lower hemisphere (6), and sets bolt holes at corresponding positions of the upper flange and the end plate, and the outward-extending lower flange part is provided with bolt holes; the annular stiffening rib flange hollow lower hemisphere outward-extending cantilever rod end (7) is formed in the factory by welding the upper flange, the lower flange, the web and the end plate, and the cross-section is H-shaped, and then it is welded with the annular stiffening rib flange hollow lower hemisphere (6) in the factory to form the annular stiffening rib flange hollow lower hemisphere (2) with a cantilever rod end.

[0010] The hollow upper hemisphere (1) of the annular stiffening rib flange with cantilever rod ends, the hollow lower hemisphere (2) of the annular stiffening rib flange with cantilever rod ends and the upper flange extended H-shaped steel rod (3) are all connected on site using high-strength bolts, truly realizing the intelligent and industrialized construction of modular fully assembled large-span steel structures, avoiding on-site welding, reducing carbon emissions, and ensuring reliable structural performance.

[0011] Compared with the traditional welded hollow ball node, the chord of the node of the present invention adopts H-shaped steel open section rods, which have certain construction advantages over the closed section rods such as round steel pipes, square steel pipes and rectangular steel pipes commonly used in actual engineering. The open section is convenient for welding and bolting, conforms to the research and development of assembled nodes, and is convenient for overlapping the upper purlins of large spans. The number and angle of the hollow ball connection chord rods can be reasonably set according to the form of modular large-span steel structure.

[0012] Compared with the prior art, the nodes of the present invention can be processed and manufactured in a factory, achieving the purpose of factory production. On site, it is only necessary to connect the hollow upper hemisphere of the annular stiffening rib flange (1), the hollow lower hemisphere of the annular stiffening rib flange with a cantilever rod end (2) and the upper flange extended H-shaped steel rod (3) by high-strength bolts. The main damage position of the node of the present invention in an earthquake is the local buckling damage of the upper flange extended H-shaped steel rod (3). After the upper flange extended H-shaped steel rod (3) is obviously buckled, it is replaced, so that the node can continue to be used in the structure after repair, greatly reducing the cost of post-earthquake repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a node connecting multiple chord rods according to the present invention.

[0014] Figure 2 This is a schematic diagram of the node connection of a single chord structure of the present invention.

[0015] Figure 3The schematic diagram is a completed connection diagram of a hollow upper hemisphere 1 of an annular stiffening rib flange with a cantilever rod end and a hollow lower hemisphere 2 of an annular stiffening rib flange with a cantilever rod end.

[0016] Figure 4 It is a schematic diagram of the hollow upper hemisphere 1 of the annular stiffening rib flange with cantilever rod end of the node of the present invention.

[0017] Figure 5 It is a schematic diagram of the hollow lower hemisphere 2 of the annular stiffening rib flange with cantilever rod end of the node of the present invention.

[0018] Figure 6 It is a schematic diagram of the upper flange extended H-shaped steel member 3.

[0019] Figure 7 It is a schematic diagram of the hollow upper hemisphere 4 with annular stiffening rib flange.

[0020] Figure 8 It is a schematic diagram of the annular stiffening rib flange hollow upper hemisphere overhanging cantilever rod end 5.

[0021] Fig. 9 Schematic diagram of hollow lower hemisphere 6 with annular stiffening rib flange.

[0022] Fig.10 It is a schematic diagram of the annular stiffening rib flange hollow lower hemisphere extended cantilever rod end 7. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work shall fall within the scope of protection of the present invention.

[0024] In order to facilitate the viewing of the various reference numerals in the drawings of the specification, the reference numerals appearing in the drawings of the specification are uniformly described as follows:

[0025] As attached Figures 1 to 10 As shown, a modular large-span steel structure fully bolted hollow ball connected H-shaped steel node of the present invention includes an annular stiffening rib flange hollow upper hemisphere 1 with a cantilever rod end, an annular stiffening rib flange hollow lower hemisphere 2 with a cantilever rod end, an upper flange overhanging H-shaped steel rod 3, an annular stiffening rib flange hollow upper hemisphere 4, an annular stiffening rib flange hollow upper hemisphere overhanging cantilever rod end 5, an annular stiffening rib flange hollow lower hemisphere 6, and an annular stiffening rib flange hollow lower hemisphere overhanging cantilever rod end 7.

[0026] Specific implementation method of the present invention: one end of the hollow upper hemisphere of the annular stiffening rib flange (4) is welded to the hollow upper hemisphere of the annular stiffening rib flange protruding cantilever rod end (5); one end of the hollow lower hemisphere of the annular stiffening rib flange (6) is welded to the hollow lower hemisphere of the annular stiffening rib flange protruding cantilever rod end (7); the upper flange protruding H-shaped steel member (3) is formed by cutting and removing a part of the lower flange and the corresponding web of the H-shaped steel member and then welding the end plate; the hollow upper hemisphere of the annular stiffening rib flange protruding cantilever rod end (5) is formed in the factory by welding the cut upper flange, lower flange, web and end plate, and the cross-section is an inverted C-shape, and bolt holes are set at the corresponding positions of the upper flange, lower flange and end plate; the hollow lower hemisphere of the annular stiffening rib flange protruding cantilever rod end (5) is formed by welding the cut upper flange, lower flange, web and end plate in the factory, and the cross-section is an inverted C-shape, and bolt holes are set at the corresponding positions of the upper flange, lower flange and end plate; the hollow lower hemisphere of the annular stiffening rib flange protruding The extended cantilever rod end (7) is formed in the factory by welding the cut upper flange, lower flange, web and end plate, and has an H-shaped cross-section, and bolt holes are set at corresponding positions of the upper flange and the end plate, and the extended lower flange part is provided with bolt holes; the upper flange extended H-shaped steel rod (3) has bolt holes on the upper flange, lower flange and end plate; when connecting, the hollow upper hemisphere (1) of the annular stiffening rib flange with the cantilever rod end and the hollow lower hemisphere (2) of the annular stiffening rib flange with the cantilever rod end are connected by high-strength bolts; the bolt holes of the upper flange extended H-shaped steel rod (3) are overlapped with the bolt holes of the hollow upper hemisphere of the annular stiffening rib flange extended cantilever rod end (5) and the hollow lower hemisphere of the annular stiffening rib flange extended cantilever rod end (7), and connected by high-strength bolts.

[0027] The nodes of the present invention can be processed and manufactured in a factory to achieve the purpose of factory production. On site, the hollow upper hemisphere of the annular stiffening rib flange (1), the hollow lower hemisphere of the annular stiffening rib flange with a cantilever rod end (2) and the upper flange extended H-shaped steel rod (3) only need to be connected by high-strength bolts, thereby avoiding on-site welding, reducing carbon emissions, and ensuring reliable structural performance.

[0028] In a modular large-span steel structure fully bolted hollow ball connected H-shaped steel node in this embodiment, the number and angle of the hollow ball connection chords can be reasonably set according to the form of the modular large-span steel structure.

[0029] In the modular large-span steel structure full-bolt hollow ball connection H-shaped steel node of the present embodiment, the diameter, thickness and specifications of the hollow upper hemisphere (1) of the annular stiffening rib flange with cantilever rod end and the hollow lower hemisphere (2) of the annular stiffening rib flange with cantilever rod end, and the specifications of the upper flange extended H-shaped steel rod (3) can be reasonably adjusted according to the span of the large span. The node is easy to repair, and the components are all processed and manufactured in the factory, and the on-site assembly is convenient and fast.

[0030] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A modular large-span steel structure with fully bolted hollow ball connected H-shaped steel nodes. Features: It comprises an annular stiffening rib flange hollow upper hemisphere (1) with a cantilever rod end, an annular stiffening rib flange hollow lower hemisphere (2) with a cantilever rod end, and an upper flange protruding H-shaped steel rod (3); the annular stiffening rib flange hollow upper hemisphere (1) with a cantilever rod end comprises an annular stiffening rib flange hollow upper hemisphere (4) and an annular stiffening rib flange hollow upper hemisphere protruding cantilever rod end (5); the annular stiffening rib flange hollow lower hemisphere (2) with a cantilever rod end comprises an annular stiffening rib flange hollow lower hemisphere (6) and an annular stiffening rib flange hollow lower hemisphere protruding cantilever rod end (7); One end of the hollow upper hemisphere of the annular stiffening rib flange (4) is welded to the hollow upper hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (5); one end of the hollow lower hemisphere of the annular stiffening rib flange (6) is welded to the hollow lower hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (7); the upper flange, the lower flange and the end plate of the hollow upper hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (5) are provided with bolt holes; the upper flange and the end plate of the hollow lower hemisphere of the annular stiffening rib flange outwardly extending cantilever rod end (7) are provided with bolt holes, and the outwardly extending lower flange portion is provided with Bolt holes; the upper flange, lower flange and end plate of the upper flange extended H-shaped steel member (3) are provided with bolt holes; when connecting, the hollow upper hemisphere (1) of the annular stiffening rib flange with the cantilever rod end and the hollow lower hemisphere (2) of the annular stiffening rib flange with the cantilever rod end are connected by high-strength bolts; the bolt holes of the upper flange extended H-shaped steel member (3) are overlapped with the bolt holes of the hollow upper hemisphere extended cantilever rod end (5) of the annular stiffening rib flange and the hollow lower hemisphere extended cantilever rod end (7) of the annular stiffening rib flange, and connected by high-strength bolts; The annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) is cut into corresponding arcs on the upper flange, lower flange and web of the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) according to the arc of intersection of the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) and the annular stiffening rib flange hollow upper hemisphere (4), and bolt holes are arranged at corresponding positions of the upper flange, lower flange and end plate; the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (5) is formed in the factory by welding the upper flange, lower flange, web and end plate, and the cross section is an inverted C-shape, and then welded with the annular stiffening rib flange hollow upper hemisphere (4) in the factory to form an annular stiffening rib flange hollow upper hemisphere (1) with a cantilever rod end; The annular stiffening rib flange hollow lower hemisphere outward-extending cantilever rod end (7) cuts corresponding arcs on the upper flange, lower flange and web of the annular stiffening rib flange hollow upper hemisphere outward-extending cantilever rod end (7) according to the arc of intersection of the annular stiffening rib flange hollow lower hemisphere outward-extending cantilever rod end (7) and the annular stiffening rib flange hollow lower hemisphere (6), and sets bolt holes at corresponding positions of the upper flange and the end plate, and the outward-extending lower flange part is provided with bolt holes; the annular stiffening rib flange hollow lower hemisphere outward-extending cantilever rod end (7) is formed in the factory by welding the upper flange, the lower flange, the web and the end plate, and the cross-section is H-shaped, and then it is welded with the annular stiffening rib flange hollow lower hemisphere (6) in the factory to form the annular stiffening rib flange hollow lower hemisphere (2) with a cantilever rod end.

2. According to claim 1, a modular large-span steel structure fully bolted hollow ball connected H-shaped steel node, Features: The annular stiffening rib flange hollow upper hemisphere (4) and the annular stiffening rib flange hollow lower hemisphere (6) are cast in a factory.

3. According to claim 1, a modular large-span steel structure with fully bolted hollow balls connected to H-shaped steel nodes, Features: The upper flange extended type H-shaped steel member (3) is formed by cutting and removing a part of the lower flange and the corresponding web of the H-shaped steel member and then welding the end plate.

4. According to claim 1, a modular large-span steel structure fully bolted hollow ball connected H-shaped steel node, Features: The chord of the node adopts H-shaped steel open section member.

5. According to claim 1, a modular large-span steel structure fully bolted hollow ball connected H-shaped steel node, Features: The annular stiffening rib flange hollow upper hemisphere with cantilever rod end (1), the annular stiffening rib flange hollow lower hemisphere with cantilever rod end (2) and the upper flange extended type H-shaped steel rod (3) are all connected on site using high-strength bolts.

6. According to claim 1, a modular large-span steel structure fully bolted hollow ball connected H-shaped steel node, Features: The bending stiffness, tensile strength and compressive strength of the node are adjusted by adjusting the diameter, thickness and specifications of the stiffening ribs of the hollow upper hemisphere (1) of the annular stiffening rib flange with a cantilever rod end and the hollow lower hemisphere (2) of the annular stiffening rib flange with a cantilever rod end, and the specifications of the upper flange extended type H-shaped steel rod (3).

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