CN-121992867-A - Butterfly connection node for steel structure grid structure

Abstract

The invention discloses a butterfly connection node for a steel structure grid structure, which comprises a node plate, two inclined wing plates, an end plate, a horizontal rod or web member, a third lug plate and a web member, wherein the node plate is arranged at the connection node of the steel structure grid structure, the first lug plate is outwards formed on the outer edge of the node plate along the direction of the plate surface of the node plate, the inclined wing plates are obliquely arranged, the lower sides of the inclined wing plates are connected to the plate surface of the node plate, the two inclined wing plates are oppositely arranged, the distance between the two inclined wing plates is gradually increased from the lower sides of the inclined wing plates to the upper sides of the inclined wing plates, the second lug plate is outwards formed on one sides, far from the node plate, of the opposite ends of the inclined wing plates, the end plate is arranged on the end surface of the horizontal rod or web member of the steel structure grid structure, the third lug plate is connected to one side, far from the horizontal rod or web member, and the third lug plate is detachably connected to the first lug plate. The invention solves the problems of high processing precision requirement and high rod piece connection alignment difficulty of the connecting node of the existing steel structure grid structure.

Inventors

• ZHANG LIANGLAN
• WANG YING
• LIU XIANG
• JIANG JUNMING
• Cui Kaiqiang
• LI PENG

Assignees

• 中国建筑第八工程局有限公司

Dates

Publication Date

20260508

Application Date

20260225

Claims (5)

1. 1. A butterfly connection node for a steel structure grid structure, comprising: The node plate is arranged at a connecting node of the steel structure grid structure, and a first lug plate is formed on the outer edge of the node plate along the outer edge of the plate surface direction of the node plate; The two inclined wing plates are obliquely arranged, the lower sides of the inclined wing plates are connected to the plate surface of the node plate, the two inclined wing plates are oppositely arranged, the distance between the two inclined wing plates is gradually increased from the lower side of the inclined wing plates to the upper side of the inclined wing plates, and one sides, far away from the node plate, of the opposite ends of the inclined wing plates are outwards extended to form second lug plates; The end plate is arranged on the end face of a horizontal rod or a web member of the steel structure grid structure, one side, far 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 with the first lug plate, and the third lug plate of the web member is detachably connected with the second lug plate.
2. 2. The butterfly connection node for a steel structure grid structure according to claim 1, wherein the number of the first lug plates is four, and four first lug plates are arranged at equal intervals along the circumferential direction of the connecting disc.
3. 3. The butterfly connection node for a steel structure grid structure of claim 2, wherein the underside of the inclined fin plate is disposed in a line direction of the two first ear plates on a diagonal line.
4. 4. The butterfly connection node for a steel structure grid structure of claim 3, wherein the third ear plate is detachably connected to the first ear plate or the second ear plate by bolts.
5. 5. The butterfly connection node for a steel structure grid structure of claim 1, wherein the central axes of the horizontal rods and the web members meet at a center point of the node plate.

Description

Butterfly connection node for steel structure grid structure Technical Field The invention relates to the technical field of steel structure grid structures, in particular to a butterfly-shaped connecting node for a steel structure grid structure. Background The steel structure grid structure has the advantages of reasonable space stress, large span, light dead weight, good earthquake resistance and the like, and is widely applied to large-span constructional engineering or photovoltaic support structures. The rod piece connection node is used as a core stress component of the grid structure, and the connection performance of the rod piece connection node directly influences the stability, the safety and the construction efficiency of the whole grid structure. The common connecting nodes of the prior steel structure grid structure mainly comprise bolt ball nodes, welded hollow ball nodes and the like. The bolt ball node is convenient to install, but the machining precision requirement is extremely high, the matching precision of the bolt and the ball node directly influences the connection reliability, and the cost is higher. The welding technology of the hollow ball node is complex, the dead weight of the node is large, and the connecting and aligning difficulty of the rod piece is large. Disclosure of Invention In order to overcome the defects existing in the prior art, the butterfly-shaped connecting node for the steel structure grid structure is provided at present, so that the problems that the existing connecting node for the steel structure grid structure is high in machining precision requirement and high in rod piece connection alignment difficulty are solved. To achieve the above object, there is provided a butterfly connection node for a steel structure grid structure, comprising: The node plate is arranged at a connecting node of the steel structure grid structure, and a first lug plate is formed on the outer edge of the node plate along the outer edge of the plate surface direction of the node plate; The two inclined wing plates are obliquely arranged, the lower sides of the inclined wing plates are connected to the plate surface of the node plate, the two inclined wing plates are oppositely arranged, the distance between the two inclined wing plates is gradually increased from the lower side of the inclined wing plates to the upper side of the inclined wing plates, and one sides, far away from the node plate, of the opposite ends of the inclined wing plates are outwards extended to form second lug plates; The end plate is arranged on the end face of a horizontal rod or a web member of the steel structure grid structure, one side, far 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 with the first lug plate, and the third lug plate of the web member is detachably connected with the second lug plate. Further, the number of the first lug plates is four, and the four first lug plates are arranged at equal intervals along the circumferential direction of the connecting disc. Further, the lower sides of the inclined fin plates are arranged along the line forming direction of the two first ear plates on the diagonal line. Further, the third ear plate is detachably connected to the first ear plate or the second ear plate through bolts. Further, the central axes of the horizontal rod and the web member meet at the central point of the gusset plate The butterfly connection node for the steel structure grid structure has the advantages of being simple in structure and convenient to process and install. The invention avoids the severe requirements of the traditional bolt ball node on the machining precision by the combined design of the node plate, the inclined fin plate and the end plate, does not need a complex welding process, and obviously reduces the manufacturing and construction difficulties. The rod piece connection alignment for the butterfly connection node of the steel structure grid structure is accurate and high in adaptability. According to the butterfly-shaped connecting node for the steel structure grid structure, through the cooperation of the first lug plate and the third lug plate and the cooperation of the second lug plate and the third lug plate, the rapid positioning and reliable connection of the horizontal rod and the web member are realized, the intersection of the rod member axis and the center of the node plate is ensured, and the stress rationality of the structure is improved. The butterfly connection nodes for the steel structure grid structure are detachably connected, and are convenient to maintain and adjust. The butterfly connection node for the steel structure grid structure adopts a bolt connection mode, so that the rod piece and the node can be detachably connected, later maintenance, replacement or structure adjustment are convenient, and the operabil