Steel structure tree-shaped cross reinforcing joint

Abstract

The utility model relates to the technical field of tree-shaped steel structures, and provides a steel structure tree-shaped cross reinforcing joint which comprises a tree-shaped main steel pipe, branch steel pipes and a plurality of stiffening plates, the upper end of the tree-shaped main steel pipe is arranged in a forked mode, the branch steel pipes are fixedly connected to the upper end of the tree-shaped main steel pipe, and the stiffening plates are fixedly connected to the branch steel pipes. The stiffening plates are arranged in the tree-shaped main steel pipe, and the number of the stiffening plates is multiple. The stiffening plates are arranged along the cross section of the tree-shaped main steel pipe, and the stiffening plates are parallel to one another and distributed at intervals in the height direction of the tree-shaped main steel pipe. The tree-shaped steel structure node has the effect of improving the bearing capacity of the tree-shaped steel structure node.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of tree-shaped steel structures, in particular to a steel structure tree-shaped cross reinforcing joint. BACKGROUND

[0002] With the progress of science and technology and the strengthening of the comprehensive national strength, steel structure buildings are applied more and more widely. Steel structure is one of the main building structure types at present. Because the steel structure is lighter in weight and simple in construction, it is widely applied in fields such as large workshops, stadiums and super high-rise buildings. Steel nodes are mainly used to connect steel structure components, and the analysis and calculation of complex nodes are very important. For statically indeterminate structures, the damage of a single rod does not cause the damage of the whole steel structure truss space system, but the damage of a complex important node can cause the damage of the whole structure, and the serious consequences are self-evident. Therefore, the principle of "strong node and weak rod" should be followed in the design.

[0003] The tree-shaped structure has many advantages. The tree-shaped steel structure is a relatively novel structure form, has a reasonable force transmission path, is high in bearing capacity, has a wide support coverage, and can form a large support space with small rods.

[0004] There are certain defects in the model selection of the steel structure tree-shaped cross joint in calculation, and there are certain differences between the joint in actual construction and the joint in the whole model calculation. The node structure of the key part may be different from the actual stress condition. The tree-shaped main steel pipe is pierced by the tree branch steel pipe, and the lateral force caused by the tree branch steel pipe is very large, which can easily tear the tree-shaped main steel pipe column. Therefore, in the design, the node should be separately analyzed by finite element analysis, the insufficient position should be strengthened, and the bearing capacity of the node should be improved. CONTENT OF THE INVENTION

[0005] In order to improve the bearing capacity of the tree-shaped steel structure node, the application provides a steel structure tree-shaped cross reinforcing joint.

[0006] The steel structure tree-shaped cross reinforcing joint provided by the application adopts the following technical scheme:

[0007] A steel structure tree-shaped cross reinforcing joint, comprising a tree-shaped main steel pipe, a tree branch steel pipe and a plurality of stiffening plates, the upper end of the tree-shaped main steel pipe is bifurcated, the tree branch steel pipe is fixedly connected to the upper end of the tree-shaped main steel pipe, and a plurality of tree branch steel pipes are arranged, the stiffening plates are arranged in the interior of the tree-shaped main steel pipe, and a plurality of stiffening plates are arranged, the stiffening plates are arranged along the cross section of the tree-shaped main steel pipe, the stiffening plates are parallel to each other, and are distributed in the height direction of the tree-shaped main steel pipe.

[0008] By adopting the technical scheme, the stiffening plates are arranged every 1m in the interior of the tree-shaped cross joint area through finite element calculation and analysis of the nodes, so as to reduce the support span of the tree-shaped main steel pipe, thereby improving the bearing capacity of the node.

[0009] Preferably, the arc-shaped plate is arranged at the bifurcation position of the tree-shaped main steel pipe, and the adjacent two tree branch steel pipes are connected through the arc-shaped plate.

[0010] By adopting the technical scheme, the design of the arc-shaped plate can better disperse the pressure received by the tree branch steel pipe and reduce stress concentration, thereby improving the bearing capacity of the entire tree-shaped steel structure.

[0011] Preferably, the tree-shaped main steel pipe comprises an integrated support column and a connecting column, the two ends of the support column are connected with the connecting column and the ground respectively, the tree branch steel pipe is arranged on the connecting column, and the cross-sectional area of the connecting column gradually increases in the direction away from the support column.

[0012] By adopting the technical scheme, the tree-shaped structure fully utilizes the characteristics of light weight and high strength of the steel structure, has a reasonable force transmission path, high bearing capacity, and wide support coverage, and can form a large support space with small members.

[0013] Preferably, the spacing between each stiffening plate is 1m.

[0014] Preferably, the inner wall of the tree-shaped main steel pipe is thickened, and the thickness of the inner wall of the tree-shaped main steel pipe is 60mm.

[0015] By adopting the technical scheme, the wall thickness of the tree-shaped cross joint area is strengthened to 60mm, which greatly enhances the rigidity of the intersecting section of the tree branch steel pipe, ensures that the tree-shaped main steel pipe at the cross position is not torn, and ensures the safety and reliability of the structure.

[0016] Preferably, a site assembly point is arranged at the upper end of the bifurcation point of the tree-shaped main steel pipe, and the tree branch steel pipe is welded to the tree-shaped main steel pipe through a primary weld.

[0017] Preferably, the site assembly point is arranged at the upper end of the bifurcation point 400mm away.

[0018] By adopting the technical scheme, the primary weld is used for structures bearing important loads, improves the safety and durability of the structure, and prolongs the service life.

[0019] Preferably, the tree-shaped main steel pipe is additionally provided with an inner partition plate.

[0020] By adopting the technical scheme, the inner partition plate has high strength and rigidity, can bear a large load, can effectively enhance the strength of the tree-shaped steel structure, improve the overall stability, and make the building structure more solid.

[0021] Preferably, the tree-shaped steel pipes are provided with two, respectively, a large column and a small column, the pipe diameter of the large column is larger than that of the small column, the central axis of the large column coincides with the central axis of the support column, and the central axis of the small column forms an included angle with the central axis of the support column.

[0022] By adopting the above technical scheme, the steel structure tree-shaped intersection reinforced node part converges multiple bars, so that each branch bears the resultant force along the axial direction, and finally the resultant force is transmitted to the foundation structure through the connection of the tree-shaped main steel pipe and the foundation, so that the resultant force of the tree-shaped structure system is guaranteed.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] (1) Through the finite element calculation and analysis of the node, a stiffener plate is arranged every 1m in the interior of the steel structure tree-shaped intersection node area to reduce the support span of the tree-shaped main steel pipe; at the same time, the wall thickness of the tree-shaped intersection node area is strengthened to 60mm thick, which greatly enhances the stiffness of the intersecting section of the branch steel pipe, ensures that the tree-shaped main steel pipe at the intersection position is not torn, and ensures the safety and reliability of the structure.

[0025] (2) The steel structure tree-shaped intersection reinforced node part converges multiple bars, so that each branch bears the resultant force along the axial direction, and finally the resultant force is transmitted to the foundation structure through the connection of the tree-shaped main steel pipe and the foundation, so that the resultant force of the tree-shaped structure system is guaranteed, and the tree-shaped structure fully plays the characteristics of light weight and high strength of steel structure. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a reinforced node in the embodiment of the present application;

[0027] Figure 2 is Figure 1 is a sectional view of A-A in

[0028] Figure 3 is Figure 1 is a sectional view of B-B in

[0029] Fig. 1 is a sectional view of A-A in DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. The present application can be embodied in various forms, and is not limited to the embodiments described here.

[0031] In the description of the present application, the expressions of "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in combination with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics of the expressions can be combined in any one or more embodiments or examples in a suitable manner.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing specific embodiments only and not intended to be limiting of the application; the terms "comprising", "having" and "including" and any variations thereof used in the specification and in the claims are intended to cover not exclusive inclusion.

[0033] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected; or can be detachably connected; or can be integrated; or can be mechanically connected. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art can combine and combine the different embodiments or examples and the features of different embodiments or examples represented in the present application without conflict.

[0035] The embodiments of the present application disclose a steel structure tree-shaped cross reinforced joint. Referring to Figures 1 to 3 The reinforced joint comprises a tree-shaped main steel pipe 1, a branch steel pipe 2 and a plurality of stiffening plates 3. The tree-shaped main steel pipe 1 comprises a support column 11 and a connecting column 12 connected integrally, and the cross section of the support column 11 and the connecting column 12 can be rectangular. The two ends of the support column 11 are connected with the connecting column 12 and the ground foundation structure respectively, and the cross-sectional area of the connecting column 12 gradually increases in the direction away from the support column 11. The upper end of the connecting column 12 is bifurcated, the branch steel pipe 2 is fixedly connected at the upper end of the connecting column 12, and a plurality of branch steel pipes 2 are arranged. Each branch steel pipe 2 is at the bifurcated position.

[0036] As shown, the number of branch steel pipes 2 is two, which are large columns 4 and small columns 5, and the pipe diameter of the large column 4 is larger than that of the small column 5. The central axis of the large column 4 coincides with the central axis of the support column 11, and both are in the vertical direction; the central axis of the small column 5 forms an angle with the central axis of the support column 11, and the angle is an acute angle. The steel structure tree-shaped cross reinforced node position converges multiple members, so that each branch bears the resultant force along its axis direction, and finally transmits to the foundation structure through the tree-shaped main steel pipe 1 and the foundation connection to ensure that the tree-shaped structure system bears the resultant force.

[0037] Specifically, the stiffening plate 3 is fixedly connected inside the tree-shaped main steel pipe 1, and a plurality of stiffening plates 3 are arranged in parallel, the stiffening plates 3 are arranged along the cross section of the tree-shaped main steel pipe 1, and the stiffening plates 3 are distributed at intervals along the height direction of the tree-shaped main steel pipe 1; in this embodiment, the interval between each stiffening plate 3 is 1m. The bifurcation position of the connecting column 12 is fixedly connected with an arc-shaped plate 6, and the adjacent two branch steel pipes 2 are transitionally connected through the arc-shaped plate 6. The design of the arc-shaped plate 6 can better disperse the pressure received by the branch steel pipe 2 and reduce stress concentration, thereby improving the carrying capacity of the entire tree-shaped steel structure.

[0038] In addition, the inner wall of the tree-shaped main steel pipe 1 is thickened, and the thickness of the inner wall of the tree-shaped main steel pipe 1 is 60mm. The wall thickness of the tree-shaped cross node area is strengthened to 60mm, which greatly enhances the stiffness of the intersecting section of the branch steel pipe 2, ensures that the tree-shaped main steel pipe 1 at the cross position is not torn, and ensures the safety and reliability of the structure. The bifurcation point of the tree-shaped main steel pipe 1 is provided with a site assembly point, which is arranged at the upper end of the bifurcation point 400mm, and the branch steel pipe 2 is welded to the tree-shaped main steel pipe 1 through a primary weld 7. The primary weld 7 is used for structures bearing important loads, which can improve the safety and durability of the structure and prolong the service life. The tree-shaped main steel pipe 1 is additionally provided with an inner partition plate 8, which is horizontally arranged. The inner partition plate 8 has high strength and rigidity, can bear large load, can effectively enhance the strength of the tree-shaped steel structure, improve the overall stability, and make the building structure more solid.

[0039] The specific implementation of the steel structure tree-shaped cross reinforced node is as follows: the original wall thickness of the cross node range is cut off in the factory, and the thickness required by calculation is replaced, and the stiffening plates 3 are arranged at intervals of 1m inside. The bifurcation position is transitioned through the arc-shaped plate 6 with the same thickness as the wall thickness, and the site assembly point is arranged at the upper end of the bifurcation point 400mm, and is welded through the primary weld 7 in the site.

[0040] The implementation principle of the steel structure tree-shaped cross reinforced joint in the embodiment of the application is that: through finite element calculation and analysis of the joint, a stiffener 3 is arranged every 1 m in the internal region of the steel structure tree-shaped cross joint to reduce the support span of the tree-shaped main steel pipe 1, so as to improve the bearing capacity of the joint. At the same time, the wall thickness of the tree-shaped cross joint region is strengthened to 60 mm thick, which greatly enhances the stiffness of the intersecting section of the branch steel pipe 2, ensures that the tree-shaped main steel pipe 1 at the cross position is not torn, and ensures the safety and reliability of the structure.

[0041] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: all equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A steel structural tree cross reinforced joint, characterized by, The tree-shaped main steel pipe (1) is bifurcated at the upper end, the tree branch steel pipes (2) are fixedly connected to the upper end of the tree-shaped main steel pipe (1) and are provided in plurality, the stiffening plates (3) are arranged inside the tree-shaped main steel pipe (1) and are provided in plurality; the stiffening plates (3) are arranged along the cross section of the tree-shaped main steel pipe (1), the stiffening plates (3) are parallel to each other and are distributed in the height direction of the tree-shaped main steel pipe (1).

2. A steel tree cross reinforced joint according to claim 1, characterized in that, The arc-shaped plates (6) are arranged at the bifurcated positions of the tree-shaped main steel pipe (1), and the adjacent two tree branch steel pipes (2) are transitionally connected through the arc-shaped plates (6).

3. A steel tree cross reinforced joint according to claim 1, characterized in that, The tree-shaped main steel pipe (1) comprises a support column (11) and a connecting column (12) which are integrally connected, the two ends of the support column (11) are connected with the connecting column (12) and the ground respectively, the tree branch steel pipes (2) are arranged on the connecting column (12), and the cross-sectional area of the connecting column (12) gradually increases in the direction away from the support column (11).

4. A steel tree cross reinforced joint according to claim 1, characterized in that, The spacing between the stiffening plates (3) is 1 m.

5. A steel tree cross reinforced joint according to claim 1, wherein The inner wall of the tree-shaped main steel pipe (1) is thickened, and the thickness of the inner wall of the tree-shaped main steel pipe (1) is 60 mm.

6. A steel tree cross reinforced joint according to claim 1, wherein The upper end of the bifurcated point of the tree-shaped main steel pipe (1) is provided with a site assembly point, and the tree branch steel pipes (2) are welded to the tree-shaped main steel pipe (1) through a primary weld (7).

7. A steel tree structure cross joint reinforced node according to claim 6, characterized in that, The site assembly point is arranged at the position 400 mm above the bifurcated point.

8. A steel tree structure cross joint reinforced node according to claim 1, characterized in that, The tree-shaped main steel pipe (1) is additionally provided with an inner partition plate (8).

9. A steel tree structure cross joint reinforced node according to claim 3, characterized in that, The tree branch steel pipes (2) are provided in two, which are a large column (4) and a small column (5), the pipe diameter of the large column (4) is larger than that of the small column (5), the central axis of the large column (4) coincides with the central axis of the support column (11), and the central axis of the small column (5) forms an included angle with the central axis of the support column (11).

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