Butterfly-shaped connecting joint for steel structure grid structure

Abstract

The invention discloses a butterfly-shaped connecting node for a steel structure grid structure, which comprises a node plate arranged at the connecting node of the steel structure grid structure, and the outer edge of the node plate extends outwards along the plate surface direction of the node plate to form a first lug plate; the two inclined fin plates are obliquely arranged, the lower sides of the inclined fin plates are connected to the plate surface of the gusset plate, the two inclined fin plates are oppositely arranged, the distance between the two inclined fin plates is gradually increased in the direction from the lower sides of the inclined fin plates to the upper sides of the inclined fin plates, and the sides, away from the gusset plate, of the two opposite ends of the inclined fin plates extend outwards to form second lug plates; the end plate is installed on the end face of a horizontal rod or a web member of the steel structure grid structure, the side, away from the horizontal rod or the web member, of the end plate is connected with a third lug plate, the third lug plate of the horizontal rod is detachably connected to the first lug plate, and the third lug plate of the web member is detachably connected to the second lug plate. The problems that an existing connecting joint of a steel structure grid structure is high in machining precision requirement and large in rod piece connecting alignment difficulty are solved.

Description

Technical Field

[0001] This invention relates to the field of steel structure space frame technology, and specifically to a butterfly connection node for steel structure space frame structures. Background Technology

[0002] Steel space frame structures are widely used in large-span building projects and photovoltaic support structures due to their advantages such as rational spatial stress distribution, large span, light weight, and good seismic performance. As the core load-bearing components of a space frame structure, the connection performance of the member joints directly affects the stability, safety, and construction efficiency of the entire space frame structure.

[0003] Currently, commonly used connection nodes in steel space frame structures mainly include bolted ball joints and welded hollow ball joints. Bolted ball joints are easy to install, but require extremely high processing precision. The fit accuracy between the bolt and the ball joint directly affects the reliability of the connection, and the cost is relatively high. Welded hollow ball joints, on the other hand, have problems such as complex welding processes, large self-weight of the joint, and difficulty in aligning the members. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, a butterfly-shaped connection node for steel space frame structures is provided to solve the problems of high processing accuracy requirements and difficulty in aligning members in existing steel space frame connection nodes.

[0005] To achieve the above objectives, a butterfly connection node for steel space frame structures is provided, comprising: A node plate is provided at the connection node of the steel structure space frame structure, and the outer edge of the node plate extends outward along the plate surface direction to form a first ear plate; Two inclined fins are provided, the inclined fins are inclined and the lower side of the inclined fins is connected to the surface of the node plate. The two inclined fins are arranged opposite to each other and the distance between the two inclined fins gradually increases from the lower side of the inclined fins to the upper side of the inclined fins. The opposite ends of the inclined fins, away from the node plate, extend outward to form a second ear plate. An end plate is installed on the end face of a horizontal bar or web member of a steel structure space frame. A third ear plate is connected to the side of the end plate away from the horizontal bar or web member. The third ear plate of the horizontal bar is detachably connected to the first ear plate, and the third ear plate of the web member is detachably connected to the second ear plate.

[0006] Furthermore, there are four first ear plates, which are evenly spaced along the circumferential direction of the connecting disc.

[0007] Furthermore, the lower side of the inclined fin is arranged along the line direction of the two first ear plates that are on the diagonal.

[0008] Furthermore, the third ear plate is detachably connected to the first ear plate or the second ear plate by bolts.

[0009] Furthermore, the central axes of the horizontal bar and the web bar intersect at the center point of the node plate. The beneficial effects of this invention are that the butterfly connection node for steel space frame structures is simple in structure and convenient in processing and installation. Through the combined design of node plates, inclined wing plates, and end plates, this invention avoids the stringent requirements for processing precision of traditional bolted ball joints and eliminates the need for complex welding processes, significantly reducing manufacturing and construction difficulties.

[0010] The butterfly-shaped connection node of this invention for steel space frame structures features precise member alignment and strong adaptability. Through the cooperation of the first and third ear plates, and the second and third ear plates, the butterfly-shaped connection node of this invention for steel space frame structures achieves rapid positioning and reliable connection of horizontal members and web members, ensuring that the member axes intersect at the center of the node plate, thus improving the structural stress rationality.

[0011] The butterfly-shaped connection node for steel space frame structures of the present invention is detachable, facilitating maintenance and adjustment. The butterfly-shaped connection node for steel space frame structures of the present invention uses a bolted connection method, enabling detachable connection between the members and the node, facilitating later maintenance, replacement, or structural adjustments, and improving the operability and adaptability of the node.

[0012] The butterfly-shaped connection node of this invention for steel space frame structures exhibits reasonable stress distribution and superior load-bearing performance. The butterfly structure design ensures excellent stress performance when subjected to multi-directional loads, making it particularly suitable for large-span space frame structures where stringent strength and stiffness requirements apply.

[0013] The butterfly-shaped connection node of this invention for steel space frame structures is highly adaptable and has a wide range of applications. The combination of the node plate and the inclined wing plate can flexibly adapt to the connection requirements of web members at different angles, and is suitable for various types of steel space frame structures, such as photovoltaic supports, stadiums, convention centers and other large-span buildings. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a butterfly-shaped connection node for a steel space frame structure according to an embodiment of the present invention.

[0015] Figure label: Node plate 1, first ear plate 11; Slanted fin plate 2, second ear plate 21; End plate 3, third ear plate 31; Horizontal bar 4; 5. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Reference Figure 1 As shown, the present invention provides a butterfly connection node for steel structure space frame structure, including: node plate 1, inclined wing plate 2, and end plate 3.

[0019] In this embodiment, the node plate 1 is disposed at the connection node of the steel structure space frame. The outer edge of the node plate 1 extends outward along the plate surface direction to form a first ear plate 11.

[0020] In a preferred embodiment, the node plate is circular. There are four first ear plates 11. The four first ear plates 11 are evenly spaced along the circumferential direction of the connecting disc.

[0021] There are two inclined fin plates 2. The inclined fin plates 2 are set at an angle. The lower side of the inclined fin plate 2 is connected to the surface of the node plate 1. The lower side of the inclined fin plate 2 is set along the radial direction of the node plate. The two inclined fin plates 2 are set opposite to each other. The distance between the two inclined fin plates 2 gradually increases from the lower side of the inclined fin plate 2 to the upper side of the inclined fin plate 2.

[0022] In this embodiment, the two oblique fins are arranged in an inverted V-shape.

[0023] The two opposite ends of the oblique fin plate 2 extend outward to form a second ear plate 21 on the side away from the node plate 1.

[0024] The horizontal and web members of the steel space frame structure are equipped with end plates 3. Specifically, the end plates 3 are installed on the end faces of the horizontal members 4 or web members 5 of the steel space frame structure. The end plates are coaxially arranged with the horizontal members 4 or web members 5.

[0025] A third lug 31 is connected to the side of the end plate 3 away from the horizontal bar 4 or the web bar 5. The third lug 31 of the horizontal bar 4 is detachably connected to the first lug 11. The third lug 31 of the web bar 5 is detachably connected to the second lug 21.

[0026] In this embodiment, the lower side of the inclined fin plate 2 is arranged along the line direction of the two first ear plates 11 located on the diagonal (i.e., the radial direction of the node plate).

[0027] In a preferred embodiment, the third ear plate 31 is detachably connected to the first ear plate 11 or the second ear plate 21 by bolts.

[0028] In this embodiment, the third ear plate of the web member is attached to the second ear plate of the inclined fin plate. The third ear plate of the horizontal member is attached to the first ear plate of the node plate.

[0029] Specifically, the first ear plate, the second ear plate, and the third ear plate are each provided with a perforation. The perforation of the third ear plate of the web member is aligned with the perforation of the second ear plate of the inclined fin, and the perforations of the third ear plate and the second ear plate are connected by bolts.

[0030] The through hole of the third ear plate of the horizontal bar is aligned with the through hole of the first ear plate of the node plate, and the through holes of the third ear plate and the first ear plate are connected by bolts.

[0031] In this embodiment, the central axes of the horizontal bar 4 and the web bar 5 intersect at the center point of the node plate 1.

[0032] The butterfly-shaped connection node for steel space frame structures of the present invention has a simple structure and is convenient to process and install. Through the combined design of node plates, inclined wing plates and end plates, the present invention avoids the stringent requirements for processing precision of traditional bolt ball joints and eliminates the need for complex welding processes, significantly reducing the difficulty of manufacturing and construction.

[0033] The butterfly-shaped connection node of this invention for steel space frame structures features precise member alignment and strong adaptability. Through the cooperation of the first and third ear plates, and the second and third ear plates, the butterfly-shaped connection node of this invention for steel space frame structures achieves rapid positioning and reliable connection of horizontal members and web members, ensuring that the member axes intersect at the center of the node plate, thus improving the structural stress rationality.

[0034] The butterfly-shaped connection node for steel space frame structures of the present invention is detachable, facilitating maintenance and adjustment. The butterfly-shaped connection node for steel space frame structures of the present invention uses a bolted connection method, enabling detachable connection between the members and the node, facilitating later maintenance, replacement, or structural adjustments, and improving the operability and adaptability of the node.

[0035] The butterfly-shaped connection node of this invention for steel space frame structures exhibits reasonable stress distribution and superior load-bearing performance. The butterfly structure design ensures excellent stress performance when subjected to multi-directional loads, making it particularly suitable for large-span space frame structures where stringent strength and stiffness requirements apply.

[0036] The butterfly-shaped connection node of this invention for steel space frame structures is highly adaptable and has a wide range of applications. The combination of the node plate and the inclined wing plate can flexibly adapt to the connection requirements of web members at different angles, and is suitable for various types of steel space frame structures, such as photovoltaic supports, stadiums, convention centers and other large-span buildings.

[0037] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A butterfly-shaped connection node for steel space frame structures, characterized in that, include: A node plate is provided at the connection node of the steel structure space frame structure, and the outer edge of the node plate extends outward along the plate surface direction to form a first ear plate; Two inclined fins are provided, the inclined fins are inclined and the lower side of the inclined fins is connected to the surface of the node plate. The two inclined fins are arranged opposite to each other and the distance between the two inclined fins gradually increases from the lower side of the inclined fins to the upper side of the inclined fins. The opposite ends of the inclined fins, away from the node plate, extend outward to form a second ear plate. An end plate is installed on the end face of a horizontal bar or web member of a steel structure space frame. A third ear plate is connected to the side of the end plate away from the horizontal bar or web member. The third ear plate of the horizontal bar is detachably connected to the first ear plate, and the third ear plate of the web member is detachably connected to the second ear plate.

2. The butterfly connection node for steel structure space frame structure according to claim 1, characterized in that, The number of first ear plates is four, and the four first ear plates are equally spaced along the circumferential direction of the connecting plate.

3. The butterfly connection node for steel structure space frame structure according to claim 2, characterized in that, The lower side of the inclined fin is arranged along the line direction of the two first ear plates that are on the diagonal.

4. The butterfly connection node for steel structure space frame structure according to claim 3, characterized in that, The third ear plate is detachably connected to the first ear plate or the second ear plate by bolts.

5. The butterfly connection node for steel structure space frame structure according to claim 1, characterized in that, The central axes of the horizontal bar and the web bar intersect at the center point of the node plate.

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