CN211774528U

CN211774528U - Double-layer space grid structure bolt connection node with rectangular pipe rod piece as upper chord

Info

Publication number: CN211774528U
Application number: CN202020414842.2U
Authority: CN
Inventors: 杨大彬; 孙立泰; 李明锦; 柳锋
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-10-27
Anticipated expiration: 2030-03-27

Abstract

The patent discloses a double-deck space lattice construction bolted connection node that upper chord is rectangular pipe member. The node comprises: the node body, high-strength bolt, sleeve, shrouding or conical head and pin, the last chord member of being connected with it is the rectangular pipe, and the web member is the pipe. Wherein the node body cuts at the connecting rod piece position and forms the plane, has seted up a plurality of bolt hole on the plane that forms. The screw rod of the high-strength bolt is divided into a polish rod part with a polygonal cross section and a thread part along the axis, and the polish rod part is provided with a sliding groove. The inner surface of the sleeve is a section which is matched with the polygonal section of the polished rod part of the high-strength bolt but has a slightly larger size. After the installation is finished, the building roof panel can be directly supported on a plane formed by the upper surfaces of the upper chords of the grids without arranging supports and purlins. The joint can avoid the defects of large material consumption, more connection, longer construction and installation period and higher construction cost of the original double-purlin system, has a simpler and more concise building effect and saves steel consumption.

Description

Double-layer space grid structure bolt connection node with rectangular pipe rod piece as upper chord

Technical Field

The patent relates to a connected node of space grid structure belongs to the building structure field.

Background

The space grid structure has the advantages of light weight, high rigidity, good earthquake resistance and the like, and is widely applied in the world. Round steel tubes are usually selected as rod pieces of the space grid structure, the rod pieces are connected through nodes to form a space grid structure system, and the common nodes mainly comprise bolt ball nodes and welding ball nodes.

At present, rod pieces of a space grid structure are mostly round tubes, the bending resistance of the round tubes is poor, and the round structure of the chord members causes that the round tubes cannot be conveniently and directly connected with a building surface layer. For the space grid structure of the round tube rod piece, when transparent materials such as glass and the like are adopted as the building surface layer, one mode is to adopt a point support glass system with poor stress performance, if a frame support glass system is adopted, a layer of rod piece needs to be additionally arranged on the upper chord to serve as a frame of the glass, so that the structure is complicated, and the building effect is poor. If the roof boarding often adopts profiled sheet, the connected mode that is commonly used at present is: profiled steel sheet links to each other with inferior purlin, then inferior purlin links to each other with main purlin, and main purlin links to each other with the node of grid structure at last. Set up and support, erect the purlin not only make the material quantity bigger than normal, the rack upper strata is comparatively numerous and complex, causes moreover to connect more, construction installation cycle is longer than normal, construction cost is higher, has increased rack structure's height and weight, seriously influences the architectural effect.

Disclosure of Invention

In order to overcome the defects of the space grid structure system, the patent provides a double-layer space grid structure bolt connection node with an upper chord being a rectangular pipe rod piece. The node comprises: node body, high strength bolt, sleeve, shrouding or conical head and pin. The upper chord member connected with the upper chord member is a rectangular pipe, and the web members are circular pipes; the sealing plate or the conical head is provided with a round hole through which the high-strength bolt can pass; the upper part of the node body is a solid or hollow cylinder, the lower part of the node body is a solid or hollow hemisphere, a plane is formed by cutting the connecting rod piece, and a plurality of bolt holes are formed in the formed plane; the screw rod of the high-strength bolt is divided into a polygonal section polished rod part and a thread part along the axis, wherein the polygon is a hexagon or an octagon, the polygonal section polished rod part is provided with a sliding chute, and the sliding chute is divided into a shallow chute and a deep chute; the cross section of the inner surface of the sleeve is matched with the polygonal cross section of the polished rod part of the high-strength bolt, but the size of the sleeve is slightly larger, and a threaded hole matched with the pin is formed in the wall of the sleeve; the material of each component of the node is steel or aluminum alloy and other metal materials; and the rod piece and the sealing plate or the conical head are connected by fusion welding or friction welding.

The utility model has the advantages that:

according to the utility model provides a grid structure, because this grid structure upper chord is the rectangular pipe member, both can bear the axial force, can bear the bending moment between the festival that roof boarding arouses again betterly, grid structure need not to set up support and purlin again, so, building roof boarding can directly support on the plane that the chord member upper surface formed on the net formed, the architectural effect is more concise and lively, the steel consumption is comparatively saved, avoided the shortcoming that former double purlin system used material quantity with big, connect more, construction installation cycle is longer partially, construction cost is higher; the high-strength bolt is provided with the polygonal polished rod part, the cross section of the inner surface of the sleeve is matched with the polygonal cross section of the polished rod part of the high-strength bolt, the sleeve and the high-strength bolt are contacted with the outer wall of the polygonal cross section of the high-strength bolt through the inner wall of the sleeve to transmit torsion in the process of screwing the high-strength bolt into the node body, and the pin only slides along the shallow groove of the high-strength bolt without transmitting the torsion, so that the damage of the pin is avoided, and; the pin is screwed into the high-strength bolt deep hole from the sleeve hole and is screwed, so that looseness of the high-strength bolt under dynamic load effects such as impact and vibration can be prevented.

Drawings

Fig. 1 is a three-dimensional schematic diagram of a node assembling process (embodiment one).

Fig. 2 is a three-dimensional schematic diagram of node assembly (embodiment one).

Detailed Description

The first implementation mode comprises the following steps:

fig. 1 is a three-dimensional schematic diagram of a node assembling process, and fig. 2 is a three-dimensional schematic diagram of node assembling completion. The node comprises a node body 1, a rectangular pipe 2, a circular pipe 3, a high-strength bolt 4, a conical head 5, a sealing plate 6, a sleeve 7 and a pin 8. The hollow cylinder on the upper portion of the node body 1 and the lower hemispherical body are cut at the position of the connecting rod piece to form a plane, a plurality of bolt holes are formed in the formed plane, the end portion of the rectangular pipe 2 is connected with a sealing plate 6, the end portion of the circular pipe 3 is also connected with a conical head 5, the section of the polygonal part of the high-strength bolt 4 of the node is a regular hexagon, the polished rod part with the hexagonal section is provided with a sliding groove, the sliding groove is divided into a shallow groove and a deep groove, the sections of the inner surface and the outer surface of the sleeve 7 are also regular hexagons, and.

The installation step: (1) firstly, the high-strength bolt 4 penetrates out of the conical head 5 or the seal plate 6; (2) sleeving the sleeve 7 into the high-strength bolt 4, aligning a sliding groove of the high-strength bolt 4 with a sleeve threaded hole during sleeving, and then screwing the pin 8 into the sleeve threaded hole until the end part of the pin 8 enters the shallow groove of the high-strength bolt 4, so that the high-strength bolt 4 cannot slide into the rectangular pipe 2 or the circular pipe 3 in the subsequent installation process; (3) welding the rectangular tube 2, the sealing plate 6, the circular tube 3 and the conical head 5 into a whole; (4) node body 1 fixed position back, with the 4 corresponding bolt holes on the 3 tip of high strength bolt alignment node body 1 of rectangular pipe 2 or pipe, rotatory sleeve 7 drives high strength bolt 4 and twists node body 1 inside, sleeve 7 and high strength bolt 4 pass through sleeve 7 inner wall and the 4 polygon cross-section outer wall contact transmission torsion of high strength bolt in this process, pin 8 only slides along 4 shallow slots of high strength bolt and does not transmit torsion, thereby avoided pin 8 to destroy, when twisting to sleeve 7 by conical head 5 or shrouding 6 and node body 1 top tight, rotatory pin 8 is until its top gets into 4 deep grooves of high strength bolt.

Claims

1. A double-layer space grid structure bolt connection node with a rectangular pipe rod piece as an upper chord is characterized by comprising a node body, a high-strength bolt, a sleeve, a sealing plate or a conical head and a pin, wherein the sealing plate or the conical head is provided with a round hole through which the high-strength bolt can pass; the upper part of the node body is a solid or hollow cylinder, the lower part of the node body is a solid or hollow hemisphere, a plane is formed by cutting the connecting rod piece, and a plurality of bolt holes are formed in the formed plane; the screw rod of the high-strength bolt is divided into a polygonal section polished rod part and a thread part along the axis, the polygonal section polished rod part is provided with a sliding groove, and the sliding groove is divided into a shallow groove part and a deep groove part; the cross section of the inner surface of the sleeve is matched with the polygonal cross section of the polished rod part of the high-strength bolt, but the size of the sleeve is slightly larger, and a threaded hole matched with the pin is formed in the wall of the sleeve; the web member of the double-layer space grid structure is a circular tube and is connected with the sealing plate or the conical head.

2. The double-layer spatial grid structure bolted joint with the upper chord being the rectangular pipe rod piece according to claim 1, characterized in that: the material of each component of the node is steel or aluminum alloy.

3. The double-layer spatial grid structure bolted joint with the upper chord being the rectangular pipe rod piece according to claim 1, characterized in that: the polygonal section of the polished rod part of the high-strength bolt is a hexagonal or octagonal section.

4. The double-layer spatial grid structure bolted joint with the upper chord being the rectangular pipe rod piece according to claim 1, characterized in that: and the rod pieces of the double-layer space grid structure are connected with the sealing plates or the conical heads by fusion welding or friction welding.