Small-angle junction pipe truss node of adjacent branch pipes

Abstract

The utility model belongs to the technical field of space pipe trusses, and provides a connecting node for converging adjacent branch pipes at a main pipe at a small angle in a space pipe truss, which comprises the main pipe, the branch pipes, branch pipe nodes and stiffening plates, and the branch pipe nodes are welded into a tapered closed box type structure; the closed box type structure is formed by welding an end plate, a pair of flange plates and a pair of webs; one end of the closed box type structure is welded with the main pipe, the other end is welded with the branch pipe, the end connected with the main pipe is a flaring end, and the end connected with the branch pipe is a necking end; the stiffening plate is consistent with the axis direction of each branch pipe and is welded in the closed box type structure; the closed box type structure and the stiffening plates are welded to the main pipe in a factory. According to the utility model, the problem that the small-angle intersecting rod piece of the space pipe truss is difficult to weld is solved, the on-site construction difficulty is reduced, the on-site intersecting welding workload of branch pipes is reduced, the node connection strength is enhanced, and the construction period is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to a small-angle confluence truss node of adjacent branch pipes. Background Technology

[0002] In recent years, tubular truss structures have been widely used in large public buildings such as stadiums, airport terminals, and convention centers due to their advantages such as good load-bearing performance, light weight, rich structural forms, and outstanding humanistic and artistic creativity. Tubular joints are key nodes in tubular truss structures; their connection effect not only affects the stability and stiffness of the structure but also has a significant impact on the overall load-bearing capacity and seismic performance.

[0003] However, when the angle between adjacent branch pipes converging at the main member is small, for example... Figure 1 As shown, the intersection area of ​​the adjacent first branch pipe 11 and second branch pipe 12 is too long. During construction, it is necessary to first cut the part where the first branch pipe 11 and the second branch pipe 12 intersect, and then weld the two branch pipes along the cut area. In this way, the stress of the overall structure will be affected by the cutting accuracy and welding quality. Moreover, since the included angle between the first branch pipe 11 and the second branch pipe 12 is small, it is difficult to weld on site. If the weld is long, it will also cause a large amount of welding work and the weld quality is difficult to control. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a small-angle confluence truss node for adjacent branch pipes, which solves the problem of difficult welding of small-angle confluence members in spatial trusses, reduces on-site construction difficulty, reduces the amount of on-site welding of intersecting branch pipes, enhances the connection strength of the node, and ensures the construction period.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a small-angle confluence truss node for adjacent branch pipes, including a branch pipe, a main pipe, a branch node, and a stiffening plate;

[0007] The branch pipe node is a tapered box structure with a constricted end and a flared end. The constricted end is connected to the main pipe, and the flared end is sealed by an end plate. At least two branch pipes are connected to the end plate, and the extended axes of each branch pipe intersect the main pipe.

[0008] The stiffening plate is installed inside the branch pipe node box structure and located on the extension line of the branch pipe axis. The two ends of the stiffening plate are respectively connected to the constricted end and the flared end of the branch pipe node.

[0009] Furthermore, the constricted end and the flared end are connected by a flange plate. The flange plate at the flared end has the end plate as its end face and encloses the center normal of the end plate. It is connected to the main pipe at the constricted end. Adjacent flange plates are connected by a web plate to form the tapered box structure.

[0010] Furthermore, the web plate connects to the end plate and the main pipe.

[0011] Furthermore, the web is a plate-like structure that gradually narrows from the flared end to the constricted end.

[0012] Furthermore, the remaining edges of the stiffening plate are all connected to the box structure of the branch pipe node; the remaining edges of the stiffening plate refer to the edges other than the edges that connect to the main pipe at the constricted end and the edges that connect to the end plate at the flared end.

[0013] Furthermore, the at least two branch pipes are projected into the main pipe in space along their axes to form an intersection projection surface, which is inscribed in the intersection surface between the constricted end of the branch pipe node and the main pipe.

[0014] Furthermore, the box structure of the branch pipe node has the same node wall thickness. T , T ≥ max{ T 11 , …… T 1n},in T 11 , …… T 1n Let n be the wall thickness of each branch pipe, and n be a positive integer greater than or equal to 2.

[0015] Furthermore, the distance between the outer walls of any two branch pipes at the connection point with the end plate is the distance between the outer walls of the branch pipes. D 1,min D 1≥ 2×max{ T 11 ,…… T 1n}

[0016] Furthermore, the distance between each side of the end plate and the outer wall of the branch pipe is the branch pipe edge distance. D 2,min D 2≥ 2×max{ T 11 , …… T 1n}

[0017] Furthermore, the thickness of the stiffening plate T 4≥ max{ T 11 , ……T 1n}

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model provides a small-angle confluence truss node for adjacent branch pipes. The node has a reasonable structure, with the outer wall of the main pipe welded to the branch pipe end, achieving a stable connection at the spatial confluence position of the small-angle confluence members. The branch pipe node of this utility model has a tapered box structure, including flange plates that gradually narrow from the flared end to the constricted end. A web plate connects the upper and lower flange plates together to form an integral structure, ensuring the transmission and distribution of forces. Connecting a stiffening plate inside the branch pipe node effectively transmits the internal forces of the branch pipe to the main pipe and prevents local buckling of the outer wall of the branch pipe node, further ensuring the mechanical load-bearing performance of the node.

[0020] The adjacent branch pipe confluence truss node proposed in this utility model avoids spatial intrusion between branch pipes with small included angles when connecting to the main pipe, thus preventing additional processing steps such as branch pipe cutting and welding. This solves the problem of difficult welding of small-angle confluence members in spatial trusses. The node structure has a clear composition, effectively reducing on-site construction difficulty, minimizing on-site welding work for intersecting branch pipes, enhancing node connection strength, and ensuring the construction schedule. Attached Figure Description

[0021] Figure 1 A schematic diagram of the truss node structure for the small-angle confluence of adjacent branch pipes;

[0022] Figure 2 This is a schematic diagram of a small-angle confluence truss node structure of adjacent branch pipes according to one embodiment of this application;

[0023] Figure 3 for Figure 2 A partial sectional view;

[0024] Figure 4 A sectional view of a truss node structure where adjacent branches of three pipes meet at a small angle.

[0025] In the diagram: 1 branch pipe, 11 first branch pipe, 12 second branch pipe, 13 third branch pipe, 2 main pipe, 3 branch pipe node, 31 end plate, 321 first flange plate, 322 second flange plate, 323 third flange plate, 331 first web plate, 332 second web plate, 333 third web plate, 4 stiffening plate, 41 first stiffening plate, 42 second stiffening plate, 43 third stiffening plate. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings:

[0029] See Figure 1 In the present invention, the small angle refers to the situation where the walls of adjacent branch pipes 1 intersect when the branch pipe 1 is welded to the main pipe 2. Figure 2 The present invention proposes a small-angle confluence truss node for adjacent branch pipes, comprising a branch pipe 1, a main pipe 2, a branch pipe node 3, and a stiffening plate 4.

[0030] Branch pipe node 3 is a tapered box structure with a constricted end and a flared end. The constricted end is connected to the main pipe 2, and the flared end is sealed by an end plate 31. The end plate 31 is the end face of the box structure. At least two branch pipes 1 are connected to the surface of the end plate 31 relative to the outer side of the box. The extended axes of each branch pipe 1 intersect the main pipe 2.

[0031] The stiffening plate 4 is installed inside the box structure of the branch pipe node 3 and is located on the extension line of the axis of the branch pipe 1. Its two ends are respectively connected to the constricted end (i.e., the main pipe 2) and the flared end (i.e., the end plate 31) of the branch pipe node 3.

[0032] In an embodiment of this utility model, the branch pipe node 3 includes a flange plate 32 and a web plate 33 located between the constricted end and the flared end. The constricted end and the flared end of the branch pipe node 3 are connected by the flange plate 32. The flange plate 32 is enclosed by the center normal of the end plate 31 with the end plate 31 as the bottom. Adjacent flange plates 32 are connected by the web plate 33 to form the tapered box structure.

[0033] In embodiments of this utility model, the number of branch pipes 1 is at least two. When there are two branch pipes, their flared ends have the following characteristics: Figure 3 The structure shown includes an end plate 31, a pair of flange plates 32, and a pair of web plates 33. The end plate 31 is a single plate used to seal the flared end of the branch pipe node 3. The flange plates 32 include a first flange plate 321 and a second flange plate 322. Figure 3 As shown Figure 2 The cross-sectional view at end plate 31, combined with Figure 2 As can be seen, the first flange plate 321 and the second flange plate 322 gradually approach each other from the end plate 31 toward the main pipe 2 with the center normal of the end plate 31 as the center, and finally connect to the main pipe 2 to form a constricted end.

[0034] Further from Figure 2 As can be seen, the first flange plate 321 and the second flange plate 322 are connected by the first web plate 331 and the second web plate 332, respectively. The first web plate 331 and the second web plate 332 are also connected to the end plate 31 and the main pipe 2, forming a closed box structure.

[0035] In some embodiments of this utility model, the number of branch pipes 1 is 3, such as... Figure 4 As shown, it includes a first branch pipe 11, a second branch pipe 12 and a third branch pipe 13. Correspondingly, the flange plate 32 and the web plate 33 also have three sets, namely the first flange plate 321, the second flange plate 322, the third flange plate 323, the first web plate 331, the second web plate 332 and the third web plate 333. The stiffening plate 4 also has three sets, namely the first stiffening plate 41, the second stiffening plate 42 and the third stiffening plate 43.

[0036] In an embodiment of this utility model, the web 33 is a plate-like structure that gradually narrows from the flared end to the constricted end.

[0037] In some preferred embodiments of this utility model, the stiffening plate 4 is connected to the main pipe 2 at the constricted end and to the end plate 31 at the flared end. In addition, the remaining edges of the stiffening plate 4 are connected to the box structure of the branch pipe node, preferably to the web plate 33 of the box structure.

[0038] In an embodiment of this utility model, the first branch pipe 11, the second branch pipe 12, and other branch pipes are projected onto the main pipe 2 in space along their axes to form an intersection line projection surface. The intersection line projection surface is inscribed in the intersection surface between the constricted end of the branch pipe node 3 and the main pipe 2.

[0039] In embodiments of this utility model, the box structure of the branch pipe node 3 has the same wall thickness. T , T ≥ max{ T 11 , …… T 1n},in T 11 , …… T 1n Let n be the wall thickness of each branch pipe, and n be a positive integer greater than or equal to 2.

[0040] In an embodiment of this utility model, the distance between the outer walls of any two branch pipes 1 at the connection point with the end plate 31 is the distance between the outer walls of the branch pipes. D 1,min D 1≥ 2×max{ T 11 , …… T 1n}

[0041] In embodiments of this utility model, such as Figure 3 As shown, the distance between each side of the end plate 31 and the branch pipe 1 is the branch pipe side distance. D 2, D 2≥ 2×max{ T 11 , …… T 1n}

[0042] In an embodiment of this utility model, the thickness of the stiffening plate 4 is... T 4≥ max{ T 11 , …… T 1n}

[0043] The stiffening plate is connected to the flange plate 32, web plate 33, end plate 31 and main pipe 2 of the closed box structure of the branch pipe node 3 by welding, which can ensure that the internal force of the branch pipe 1 is effectively transmitted to the main pipe 2.

[0044] The following is a detailed description with reference to the embodiments:

[0045] As a specific embodiment of this utility model, combined with Figure 2 and Figure 3As shown, a truss node for small-angle confluence of adjacent branch pipes includes: branch pipe 1, main pipe 2, branch pipe node 3, and stiffening plate 4.

[0046] Branch pipe node 3 is welded into a closed box structure; such as Figure 2 The right end of the closed box structure shown, i.e. the constricted end, is welded to the main pipe 2, specifically to the pipe wall of the main pipe 2; the left end of the closed box structure, i.e. the flared end, is first sealed by the end plate 31, and then the end plate 31 is welded to the first branch pipe 11 and the second branch pipe 12, specifically to the ends of the first branch pipe 11 and the second branch pipe 12. After the ends of the first branch pipe 11 and the second branch pipe 12 are welded to the end plate 31 of the flared end, the axial extension lines of the first branch pipe 11 and the second branch pipe 12 converge towards the position of the main pipe 2.

[0047] The number of stiffening plates 4 is the same as the number of branch pipes 1. The extended axis of each branch pipe 1 coincides with the central axis of a corresponding stiffening plate 4 along its length. The stiffening plates 4 are welded to the interior of the closed box structure. The closed box structure of the branch pipe node 3 and the stiffening plates 4 are both welded to the main pipe 2 in the factory, which facilitates on-site welding and assembly with the branch pipe 1.

[0048] Specifically, in this embodiment, as Figure 2 As shown, the closed box structure of the branch pipe node 3 is welded together by a pair of flange plates 32 and a pair of web plates 33. The end connected to the main pipe 2 is a small opening, i.e. a constricted end, and the end connected to the branch pipe is a large opening, i.e. a flared end. The long side dimension of the small opening end is equivalent to the long side dimension of the combined section formed after the intersection of each branch pipe 1 and the main pipe 2. The short side dimension of the small opening end is equivalent to the larger outer diameter of each branch pipe 1. The long and short sides of the large opening end, i.e. the flared end, are equivalent to the long and short sides of the end plate 31.

[0049] In this embodiment, as Figure 3 The first flange 321, second flange 322, first web 331, and second web 332 of the closed box-shaped section of the branch node 3 shown have the same wall thickness. T ,and T The wall thickness is not less than that of the first branch pipe 11 T 11 The wall thickness of the second branch pipe 12 T 12 The larger of the two flanges, and the first flange 321, the second flange 322, the first web 331 and the second web 332 are all welded to the end plate 31.

[0050] like Figure 2As shown, a second stiffening plate 42 and a first stiffening plate 41 are respectively provided inside the closed box-shaped section along the axial directions of the first branch pipe 11 and the second branch pipe 12. The second stiffening plate 42 is welded to the end plate 31, the first web plate 331, the second web plate 332 and the main pipe 2, and the first stiffening plate 41 is welded to the end plate 31, the first web plate 331, the second web plate 332 and the main pipe 2, which can ensure that the internal force of the branch pipe 1 is effectively transmitted to the main pipe 2.

[0051] like Figure 3 As shown, the thickness of stiffening plate 4 T 4 not less than T 11 and T 12 The larger of the two. The minimum distance between the outer walls of the first branch pipe 11 and the second branch pipe 12 at the connection between branch pipe 1 and end plate 31. D 1 not less than T 11 and T 12 Twice the larger of the two. Minimum branch pipe edge distance (min) between the outer walls of each branch pipe. D 2 not less than T 11 and T 12 Twice that of the larger one.

[0052] The node connection method provided in this embodiment allows the branch pipe node 3, stiffening plate 4 and main pipe 2 to be welded in the factory by the steel component manufacturing unit, and the branch pipe 1 and end plate 31 to be welded on site, which significantly reduces the difficulty of on-site construction and the amount of on-site welding work.

[0053] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A truss node for small-angle confluence of adjacent branch pipes, characterized in that, Includes branch pipe (1), main pipe (2), branch pipe node (3) and stiffening plate (4); The branch pipe node (3) is a tapered box structure with a constricted end and a flared end. The constricted end is connected to the main pipe (2), and the flared end is sealed by an end plate (31). At least two branch pipes (1) are connected to the end plate (31), and the extended lines of the axes of each branch pipe (1) intersect at the main pipe (2). The stiffening plate (4) is set inside the box structure of the branch pipe node (3) and located on the extension line of the axis of the branch pipe (1). The two ends of the stiffening plate (4) are respectively connected to the constricted end and the flared end of the branch pipe node (3).

2. The adjacent branch pipe small-angle confluence truss node according to claim 1, characterized in that, The constricted end and the flared end of the branch pipe node (3) are connected by a flange plate (32). The flange plate (32) at the flared end has the end plate (31) as its end face and encloses the center normal of the end plate (31). At the constricted end, it is connected to the main pipe (2). Adjacent flange plates (32) are connected by a web plate (33) to form the tapered box structure.

3. The adjacent branch pipe small-angle confluence truss node according to claim 2, characterized in that, The web (33) connects the end plate (31) and the main tube (2).

4. The adjacent branch pipe small-angle confluence truss node according to claim 2 or 3, characterized in that, The web (33) is a plate-like structure that gradually narrows from the flared end to the constricted end.

5. The adjacent branch pipe small-angle confluence truss node according to claim 1, characterized in that, The remaining sides of the stiffening plate (4) are connected to the box structure of the branch pipe node (3).

6. The adjacent branch pipe small-angle confluence truss node according to claim 1, characterized in that, The at least two branch pipes (1) are projected into the main pipe (2) in space along their axes to form an intersection projection surface, which is inscribed in the intersection surface between the constricted end of the branch pipe node (3) and the main pipe (2).

7. The adjacent branch pipe small-angle confluence truss node according to claim 1, characterized in that, The box structure of the branch node (3) has the same node wall thickness. T , T ≥ max{ T 11 , …… T 1n },in T 11 , …… T 1n Let n be the wall thickness of each branch pipe, and n be a positive integer greater than or equal to 2.

8. The adjacent branch pipe small-angle confluence truss node according to claim 7, characterized in that, The distance between the outer walls of any two branch pipes (1) at the connection point with the end plate (31) is the distance between the outer walls of the branch pipes. D 1,min D 1≥ 2×max{ T 11 ,…… T 1n } 9. The adjacent branch pipe small-angle confluence truss node according to claim 7, characterized in that, The distance between each side of the end plate (31) and the outer wall of the branch pipe (1) is the branch pipe side distance. D 2,min D 2≥ 2×max{ T 11 , …… T 1n } 10. The adjacent branch pipe small-angle confluence truss node according to claim 7, characterized in that, The thickness of the stiffening plate (4) T 4≥ max{ T 11 , …… T 1n }

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