CN110273474A - A kind of cover board connection structure of hub type joint net frame and tubular truss - Google Patents

Abstract

The invention discloses a hub-type node network frame and a cover plate connection structure of a pipe truss, wherein a plurality of webs of the network frame are installed on the chord of the pipe truss through a hub node, and the hub node includes: a hub body The outer peripheral edge is provided with a plurality of slots arranged in the axial direction, and the end of the web rod is inserted and positioned in the slot; two cover plates are respectively arranged on the two axial sides of the hub body. end, used to limit the end of the web rod to move out of the slot in the axial direction; both of the cover plates have connecting parts, and the connecting parts are that the cover plates protrude from both ends of the hub body As for the part of the end face, the connecting parts of the two cover plates are fixedly connected with the chord. By directly connecting the two cover plates at the axial ends of the hub node to the chord, the cover plate increases the ability to transmit internal force between the chord and the hub node, which can ensure a reliable connection between the hub node and the chord, and save the hub The number of connecting parts between nodes and chords reduces the difficulty and workload of on-site construction.

Description

A cover plate connection structure of hub-type node network frame and pipe truss

technical field

The invention relates to the technical field of large-span steel structures, in particular to a cover plate connection structure of a hub-type node network frame and a pipe truss.

Background technique

The traditional spatial grid structure refers to a spatial structure composed of rods and components arranged according to certain rules through node connections, including grid frames, curved reticulated shells, and three-dimensional trusses. The space grid structure system is widely used in industrial and civil buildings, especially in long-span space structures, due to its good overall rigidity and superior technical and economic indicators. The nodes of the traditional space grid structure are generally in the form of bolted balls or welded balls. This node is in the form of a hinge, and the rods only transmit axial force, which is a two-force rod unit. In addition, when connecting grid frames, the on-site nodes are mostly located at high altitudes, and the length of high-strength bolts screwed into the bolt ball is difficult to judge with the naked eye. Supervision is very difficult, and quality problems of "false tightening" are prone to occur. Welding balls have a large amount of on-site welding and high-altitude welding, so it is difficult to guarantee the welding quality.

The current grid structure has adopted mortise and tenon joints to replace the traditional space grid structure. The connection of the new hub node network frame adopts plug-in connection, and there are cover plates at both ends. The reliable connection can be completed by inserting the rods into the nodes. If the steel pipes are not inserted into the nodes in place, the cover plates cannot be installed at all, and the entire structural system cannot be installed. Complete, fundamentally guarantee the reliability of node connection quality. Compared with the traditional network frame, the structure system of the hub node network frame is simple and beautiful, and the node connection is novel, unique and light.

The production of mortise and tenon hub joints is completely prefabricated in the factory, the manufacturing process is simpler, and there is no need to install a large number of bolts for on-site construction, and the bearing capacity of the joints is high. The hub node grid adopts a unique mortise and tenon connection node, which has higher node connection safety and better connection quality; the performance of bearing dynamic loads such as wind and earthquake is better, and the section of the rod is not weakened, and can withstand tension, compression and bending , shear and other composite load conditions; the nodes are close to consolidation, can bear large bending moments and lateral loads, and the safety of the nodes is higher. In addition, the hub node is made of aluminum alloy, which has good anti-corrosion performance, long service life, and low maintenance cost in the later period. While effectively bearing force, it also exerts the superior anti-corrosion performance of aluminum alloy materials. Good usability in sexual environment.

In the prior art, the Chinese invention patent with the publication number CN109138164A discloses a splint-type support of an aluminum alloy hub-type node grid, including: a holding part, a fixed end plate and a fixed end plate arranged in parallel on one side of the fixed end plate. The first blocking end plate and the second blocking end plate, a positioning groove suitable for being placed in a hub node is enclosed between the two blocking end plates and the fixed end plate; the connecting piece is suitable for connecting the The holding part is connected to the object to be connected. The splint-type support of the aluminum alloy hub-type node network frame adopts the holding part and the connecting piece of the clamping sealing structure to fix the hub node on the object to be connected.

However, the hub-type node network frame uses the above-mentioned splint-type support to connect the objects to be connected, and it is necessary to use two connecting parts, the holding part and the connector, to realize the connection between the hub node and the objects to be connected. The structure is relatively complicated, and the number of connecting parts used Many, and the labor intensity of on-site construction is relatively high.

Therefore, how to provide a hub node connection structure with simple structure, high construction efficiency, and safety and reliability is still a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the technical problem that the hub node network frame and the pipe truss cannot form a combined structure on different planes in the prior art, thereby providing a cover plate connection between the hub node network frame and the pipe truss structure.

In order to solve the problems of the technologies described above, the technical solution of the present invention is as follows:

A hub-type node network frame and a cover plate connection structure of a pipe truss, wherein a plurality of webs of the network frame are installed on the chord of the pipe truss through a hub node, and the hub node includes:

The outer peripheral edge of the hub body is provided with a plurality of slots arranged along its axial direction, and the ends of the web rods are plugged and positioned in the slots;

Two cover plates are respectively arranged at the two axial ends of the hub body, and are used to restrict the end of the web bar from moving out of the slot in the axial direction; both of the two cover plates have connecting parts, so The connecting part is the part where the cover plate protrudes from the two ends of the hub body, and the connecting parts of the two cover plates are fixedly connected with the chord;

The locking assembly includes a penetrating piece that passes through the hub body and the two cover plates along the axial direction of the hub body, and is arranged at both ends of the penetrating piece, and is adapted to limit the penetrating piece along the The locking member for the axial displacement of the hub body.

Further, the connecting parts of the two cover plates are welded and fixed on the chord.

Further, an auxiliary plate is fixed on the chord, and the connecting parts of the two cover plates are welded and fixed on the auxiliary plate.

Further, the auxiliary plate is formed by welding or bolting two or more arc-shaped plates on the outer periphery of the chord bar at both ends.

Further, the two connecting parts are arranged in parallel.

Further, the central axis of the hub is perpendicular to the central axis of the chord.

Further, the penetrating member includes: a screw with external threads at both ends;

The locking member includes: a first nut and a second nut; the first nut and the second nut are respectively screwed and positioned with the external threads at both ends of the screw rod, and are respectively limited on the two cover plates outside.

Further, the auxiliary plate may be welded and fixed to two cover plates of one or more hub nodes.

Further, there are two hub nodes, which are arranged on opposite sides of the auxiliary plate.

Further, the two cover plates on the same side of the two hub nodes are integrally formed.

The technical solution of the present invention has the following advantages:

1. The cover plate connection structure of the hub-type node grid and the pipe truss provided by the present invention:

First, the two cover plates at the axial ends of the hub body extend outward along the end surfaces of the hub body axial ends to form connecting parts, and the two connecting parts are directly connected to the chord rigidly, and the two cover plates can not only be used as spacers It prevents the end of the web from moving out of the slot of the hub body, and increases the ability to transmit internal force between the chord and the hub node; at the same time, the penetration is rigidly connected with the two cover plates, which enables the penetration to withstand a certain A certain degree of shear resistance improves the structural strength of the cover plate connection structure and ensures a reliable connection between the hub node and the chord;

Second, in this cover plate connection structure, the hub node is directly connected to the chord through two cover plates, which simplifies the connection between the hub node and the chord compared with the prior art in which splint-type supports and connectors are used to connect the hub node and the chord. The connection structure and the number of required connection parts are saved, which greatly reduces the difficulty and workload of on-site construction;

Third, compared with the way in which splint-type supports and connectors are used to connect hub nodes and chords in the prior art, the insertion direction of the web rods inserted into the hub nodes in the prior art is perpendicular to the axial direction of the hub body , and the hub node is installed on the outside of the chord through splint-type supports and connectors, so the web cannot be longitudinally connected to the chord in the insertion direction that directly intersects the axial direction of the chord. In some applications, the above The splint-type bearings are not applicable; while the present invention directly connects the two cover plates of the hub node to the chord, and only needs to pre-design the shape and size of the cover plate according to the connection position between the cover plate and the chord, the hub body can be It is placed at any installation angle, so that the web connected to the hub body can be installed in various directions including the insertion direction intersecting with the axial direction of the chord, and has wider applicability.

2. The cover plate connection structure of the hub-type node network frame and the pipe truss provided by the present invention, each component of the cover plate connection structure can be prefabricated in the factory, and at the construction site, only the connection part of the cover plate and the chord Welding positioning is enough, which greatly reduces the difficulty and strength of on-site construction, and the welding is all on the surface, which is easy to supervise and detect, and reduces potential safety hazards.

3. The cover plate connection structure of the hub-type node network frame and the pipe truss provided by the present invention, the two cover plates are installed on the chord through the auxiliary plate, which can absorb the installation error of the chord in the radial and axial directions, Improve installation accuracy.

4. The hub-type node network frame and the cover plate connection structure of the pipe truss provided by the present invention have a simple structure, a small number of components, and save steel material costs.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is a three-dimensional structural schematic diagram of the connection between the hub-type node network frame and the pipe truss chord provided by the first embodiment of the present invention through a cover plate;

Fig. 2 is a schematic cross-sectional structure diagram of the connection between the hub-type node network frame and the pipe truss chord provided by the first embodiment of the present invention through a cover plate;

Fig. 3 is a schematic diagram of the elevation structure of the connection between the hub-type node network frame and the pipe truss chord provided by the second embodiment of the present invention through a cover plate.

Explanation of reference numerals: 1. Web member; 2. Chord member; 3. Hub node; 31. Hub body; 32. Cover plate; 321. Connecting part; 33. Penetrating member; 34. Locking member; 4. Auxiliary plate .

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

At present, in the space structure composed of pipe trusses and hub-type node grids, the hub-type node grids include hub nodes 3 and several webs 1, and several webs 1 are formed by connecting hub nodes 3 in a certain grid form The space structure, the space structure is the network frame. The pipe truss refers to a lattice structure composed of round rods connected to each other at the ends. The chord 2 of the pipe truss is connected between multiple pipe truss webs, which can avoid the concentrated load or bending of the pipe truss webs. , so that the load is transmitted to the chord 2 of the pipe truss or the hub node 3, reducing the requirements on the cross-sectional size of the web of the pipe truss. The hub-type node grid is used to fill the space unit of the pipe truss, connect with the pipe truss, and form a composite frame in the same plane or in a different plane with the pipe truss.

As shown in Fig. 1 and Fig. 2, the embodiment of the present invention provides a cover plate connection structure of a hub-type node network frame and a pipe truss, and multiple web members 1 of the hub-type node network frame pass through the cover plate 32 of the hub node 3 Chords 2 connected longitudinally to the pipe truss.

The cover plate connection structure includes a cylindrical hub body 31 , two cover plates 32 respectively arranged in the axial direction of the hub body 31 , and a locking assembly for locking the two cover plates 32 on the hub body 31 . Wherein, the outer peripheral edge of the hub body 31 is provided with a plurality of slots arranged along its axial direction, and the ends of the plurality of web bars 1 are respectively plugged and positioned in the corresponding slots. The two cover plates 32 are used to restrict the end of the web 1 from moving out of the slot in the axial direction, and the two cover plates 32 each have a connecting portion 321, which is the part where the cover plate 32 protrudes from the two ends of the hub body 31 , the connecting portions 321 of the two cover plates 32 are welded and fixed to the chord 2 . The locking assembly includes a through-piece 33 that passes through the hub 31 and the two cover plates 32 in the axial direction of the hub 31 , and is arranged at both ends of the through-piece 33 and is adapted to limit the axial displacement of the through-piece 33 along the hub 31 The locking member 34.

The hub-type node network frame and the pipe truss are connected through the cover plate 32: First, the two cover plates 32 at both ends of the hub body 31 in the axial direction extend out the connecting portion 321 along the end faces of the hub body 31 in the axial direction. While the two connecting parts 321 are directly rigidly connected with the chord 2, the two cover plates 32 can not only be used as spacers to prevent the end of the web 1 from moving out of the slot of the hub body 31, but also increase the connection between the chord 2 and the chord 2. The ability to transmit internal force between the hub nodes 3; at the same time, the through-piece 33 is rigidly connected to the two cover plates 32, which enables the through-piece 33 to withstand a certain degree of shear force and improves the structural strength of the cover plate connection structure, which can Ensure a reliable connection between the hub node 3 and the chord 2; secondly, in this cover plate connection structure, the hub node 3 is directly connected to the chord 2 through two cover plates 32, which is different from the splint type support used in the prior art Compared with the way that the connector connects the hub node 3 and the chord 2, it simplifies the connection structure of the node and saves the number of 321 required connecting parts, which greatly reduces the difficulty and workload of on-site construction; third, it is different from the existing Compared with the method of connecting the hub node 3 and the chord 2 with splint-type supports and connectors in the technology, the plug-in direction of the web 1 connected to the hub node 3 in the prior art is perpendicular to the axial direction of the hub body 31 , and the hub node 3 is installed on the outside of the chord 2 through a splint-type support and connectors, so the web 1 cannot be longitudinally connected to the chord 2 in the insertion direction directly intersecting the axial direction of the chord 2, in some In the application occasion, the above-mentioned splint type support is not applicable; while the present invention directly connects the two cover plates 32 of the hub node 3 to the chord 2, it only needs to pre-design according to the connection part 321 of the cover plate 32 and the chord 2 If the shape and size of the cover plate 32 are good, the hub body 31 can be placed at any installation angle, so that the web bar 1 connected to the hub body 31 can be inserted along various directions including the insertion direction intersecting the axial direction and longitudinal direction of the chord bar 2 . It can be installed in different directions for wider applicability.

In the first specific implementation of this embodiment, in order to realize the connection between the cover plate 32 and the chord 2, an auxiliary plate 4 can be provided, and the auxiliary plate 4 can specifically be a sleeve or a collar, and the sleeve or collar adopts Fastened or bolted to the chord 2 , the outer wall of the sleeve or collar is used as the mounting surface with the cover 32 , and the cover 32 and the auxiliary plate 4 are connected by welding. The end where the cover plate 32 dares to connect with the auxiliary plate 4 has a notch that matches the shape of the mounting surface of the auxiliary plate 4. The setting of the notch on the cover plate 32 facilitates the bonding of the cover plate 32 and the auxiliary plate 4 together. Welding and fixing are carried out to improve the strength and reliability of the connection structure of the cover plate. Especially when the chord 2 is connected by circular steel pipes, the connection between the auxiliary plate 4 and the chord 2 can absorb the radial and axial installation errors of the circular steel pipes and improve the installation accuracy. In other embodiments, the auxiliary plate 4 can be clamped and fixed on the outer periphery of the chord 2 by welding or bolting two or more arc-shaped plates at the outer periphery of the chord 2 . In other embodiments, the auxiliary plate 4 may not be needed, and the two cover plates 32 are directly fixed on the chord 2 by welding.

Furthermore, the two connecting parts 321 on the two cover plates 32 are arranged in parallel, and during the welding process of the two connecting parts 321 arranged in parallel, there is no need to adjust the welding angle, only need to find out the welding position, and the construction is more convenient.

In a preferred implementation of this embodiment, in order to realize that the web 1 is installed on the chord 2 in the insertion direction intersecting the axial direction of the chord 2, the direction of the central axis of the hub body 31 and the central axis of the chord 2 direction parallel.

In this embodiment, the penetrating member 33 includes: a screw with external threads at both ends; the locking member 34 includes: a first nut and a second nut; the first nut and the second nut are respectively screwed to the external threads at both ends of the screw. Positioned, and respectively limited on the outer sides of the two cover plates 32.

In this embodiment, the network frame is symmetrically arranged on both sides of the pipe truss, and the corresponding two hub nodes 3 are symmetrically arranged on both sides of the chord 2, and the two hub nodes 3 are welded to the auxiliary plate through two cover plates 32 4, and the welding positions of the cover plates 32 on the same side of the two hub nodes 3 are arranged symmetrically on the auxiliary plate 4, and the two cover plates 32 are in the same plane. The two hub nodes 3 and the cover plates 32 on them are arranged symmetrically on opposite sides of the chord 2 , which can improve the connection strength and reliability between the hub node 3 and the chord 2 .

In the second implementation of this embodiment, the two cover plates 32 on the same side of the two hub nodes 3 can also be integrally formed. Such a design can further reduce the number of parts required for the connection structure of the hub nodes 3. The number of components further simplifies the node installation structure.

To sum up, in the hub-type node network frame and the cover plate connection structure of the pipe truss provided by the embodiment of the present invention, the hub node 3 is directly connected to the chord 2 through two cover plates 32, which is different from the splint type used in the prior art. Compared with the way of connecting the hub node 3 and the chord 2 by the support and the connector, the connection structure of the node is simplified and the number of 321 required connecting parts is saved, which greatly reduces the difficulty and workload of on-site construction; and the cover plate connection Each component of the structure can be prefabricated in the factory. At the construction site, only the connecting part 321 of the cover plate 32 and the chord 2 or the auxiliary plate 4 need to be welded and positioned, which greatly reduces the difficulty and strength of on-site construction, and The welding is all on the surface, which is easy to supervise and detect, and reduces potential safety hazards.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (10)

1. a kind of cover board connection structure of hub type joint net frame and tubular truss, which is characterized in that more web members (1) of the rack The chord member (2) of the tubular truss is installed on by hub node (3), the hub node (3) includes:

Hub body (31), neighboring offer the multiple slots being axially arranged along it, the end grafting positioning of the web member (1) In the slot；

Two cover boards (32) are respectively arranged on the axial ends of the hub body (31), for limiting the end of the web member (1) along axis To outside the removal slot；Two cover boards (32) all have interconnecting piece (321), and the interconnecting piece (321) is the cover board (32) stretch out the part of hub body (31) the both ends end face, the interconnecting piece (321) of two cover boards (32) with the chord member (2) it is fixedly connected；

Locking assembly, including the running through axially across the hub body (31) and two cover board (32) along the hub body (31) Part (33), and be arranged at the both ends of the penetration piece (33), suitable for limiting the penetration piece (33) along hub body (31) axis To the locking member (34) of displacement.

2. the cover board connection structure of hub type joint net frame and tubular truss according to claim 1, which is characterized in that two institutes The interconnecting piece (321) for stating cover board (32) is weldingly fixed on the chord member (2).

3. the cover board connection structure of hub type joint net frame and tubular truss according to claim 1, which is characterized in that the string It is fixed on bar (2) accessory plate (4), the interconnecting piece (321) of two cover boards (32) is weldingly fixed on the accessory plate (4) On.

4. the cover board connection structure of hub type joint net frame and tubular truss according to claim 3, which is characterized in that described auxiliary Plate (4) is helped to be welded or bolted by both ends in the chord member (2) periphery by two or more arc panels.

5. the cover board connection structure of hub type joint net frame and tubular truss according to claim 1, which is characterized in that two institutes Interconnecting piece (321) is stated to be arranged in parallel.

6. the cover board connection structure of hub type joint net frame and tubular truss according to claim 1, which is characterized in that the hub The central axis of body (31) is vertical with the central axis antarafacial of the chord member (2).

7. the cover board connection structure of hub type joint net frame and tubular truss according to claim 1, which is characterized in that

The penetration piece (33) includes: screw rod, and both ends all have external screw thread；

The locking member (34) includes: the first nut and the second nut；First nut and second nut respectively with institute The external thread bolt connection positioning at screw rod both ends is stated, and is limited respectively in the outside of two cover boards (32).

8. the cover board connection structure of hub type joint net frame and tubular truss according to claim 3, which is characterized in that described auxiliary Help plate (4) that can be welded and fixed with two cover boards (32) of one or more hub nodes (3).

9. the cover board connection structure of hub type joint net frame and tubular truss according to claim 8, which is characterized in that the hub There are two nodes (3), and is oppositely arranged on the two sides of the accessory plate (4).

10. the cover board connection structure of hub type joint net frame and tubular truss according to claim 9, which is characterized in that two Two cover boards (32) on described hub node (3) the same side are integrally formed.