Large-space steel structure tree-branch column bowl node structure and manufacturing method thereof

Abstract

The present invention relates to a large-space steel structure fork column bowl node structure and a manufacturing method thereof. The bowl node structure includes: a core tube; an upper circumferential plate sleeved and fixed on the core tube, and the upper circumferential plate is in the shape of a frustum of a cone with a larger top size and a smaller bottom size; a plurality of corbels arranged at intervals along the outer periphery of the upper circumferential plate, and the corbels are fixedly connected to the upper circumferential plate and the core tube; a lower circumferential plate sleeved on the core tube and located below the upper circumferential plate, and the lower circumferential plate is in the shape of a frustum of a cone with a larger top size and a smaller bottom size, and the lower circumferential plate is attached to the corbels and fixedly connected to the corbels and the core tube. The bowl-shaped node structure of the present invention uses corbels to support and connect the corresponding bifurcated columns, which can ensure the reasonable force transmission at the nodes of the large-span space structure. At the same time, the node structure is simple and beautiful, which not only overcomes the support problem of the super-large space structure system, but also can achieve good building effects.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure joints, and particularly to a large-space steel structure tree-column bowl joint structure and a manufacturing method thereof. Background Art

[0002] To meet the requirement of the beautiful shape of large-span space buildings, a tree-shaped space lattice shell structure is often considered. Such a roof structure often uses a support column with multi-angle bifurcated members to expand the effective bearing area of the support column and achieve a large-space building effect. Due to the diverse forms of tree columns and roof structures, the connection node practices between the support column and the grid are also very variable, and the general practices are difficult to be widely applicable. For the existing steel structure tree-column support joints, the tree-shaped members are usually relatively slender, and it is difficult to balance the large-span space effect, the building appearance, and the safe stress, which limits the application. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a large-space steel structure tree-column bowl joint structure and a manufacturing method thereof, so as to solve the problem that the existing tree-column support joints are difficult to balance the large-span space effect, the building appearance, and the safe stress, which limits the application.

[0004] The technical solution for realizing the above purpose is as follows:

[0005] The present invention provides a large-space steel structure tree-column bowl joint structure, including:

[0006] A core tube;

[0007] An upper circumferential plate sleeved on the core tube and fixedly connected to the core tube, the upper circumferential plate being in the shape of a frustum of a cone with a larger top size and a smaller bottom size;

[0008] A plurality of corbels arranged at intervals along the outer circumference of the upper circumferential plate, the corbels being fixedly connected to the upper circumferential plate and the core tube; and

[0009] A lower circumferential plate sleeved on the core tube and located below the upper circumferential plate, the lower circumferential plate being in the shape of a frustum of a cone with a larger top size and a smaller bottom size, the lower circumferential plate being attached to the corbels and fixedly connected to the corbels and the core tube.

[0010] The present invention adopts a tree-branch column bowl joint structure. By using the upper circumferential plate and the lower circumferential plate in a frustum shape with a larger top size and a smaller bottom size, a bowl-shaped joint structure is formed at the top of the core tube. A corbel is fixedly connected between the upper circumferential plate and the lower circumferential plate, and the corresponding bifurcated columns are supported and connected by the corbel, which can ensure the reasonable force transmission at the joints of the large-span space structure. At the same time, the joint structure is simple and beautiful. It not only overcomes the support problem of the super-large space structure system, but also can achieve good building effects. The bowl joint structure of the present invention connects the upper and lower parts, making the entire large-span space roof steel structure in a triangular stable force system, which can not only bear vertical loads but also resist bending, and can optimize measures such as wind columns and diagonal braces of the large-span space roof steel structure.

[0011] A further improvement of the tree-branch column bowl joint structure of the large-space steel structure of the present invention lies in that a circumferential stiffening plate is connected between two adjacent corbels.

[0012] A further improvement of the tree-branch column bowl joint structure of the large-space steel structure of the present invention lies in that a plurality of inner ring stiffening plates and a plurality of inner longitudinal stiffening plates are arranged at intervals inside the core tube.

[0013] A further improvement of the tree-branch column bowl joint structure of the large-space steel structure of the present invention lies in that the corbel includes an upper flange plate fixedly connected to the upper circumferential plate, a partition plate fixedly connected to the upper flange plate, and a lower flange plate fixedly connected to the partition plate;

[0014] The lower flange plate is also fixedly connected to the lower circumferential plate;

[0015] The partition plate is also fixedly connected to the upper circumferential plate and the core tube.

[0016] A further improvement of the tree-branch column bowl joint structure of the large-space steel structure of the present invention lies in that corbel stiffening plates are arranged inside the corbel.

[0017] The present invention also provides a manufacturing method for the tree-branch column bowl joint structure of the large-space steel structure, including the following steps:

[0018] Provide a core tube and erect the core tube on a workbench;

[0019] Provide an upper circumferential plate. The provided upper circumferential plate is in a frustum shape with a larger top size and a smaller bottom size. Sleeve the upper circumferential plate on the core tube with the top facing downwards, and place the top of the upper circumferential plate on the workbench;

[0020] Provide an assembly jig and support the assembly jig on the ground;

[0021] Provide connecting steel pipes, connect the connecting steel pipes to both ends of the core tube, and place the connecting steel pipes on the corresponding assembly jigs to support the core tube by using the assembly jigs;

[0022] Brackets are arranged at intervals along the outer periphery of the upper circumferential plate, and the arranged brackets are fixedly connected to the upper circumferential plate and the core tube; and

[0023] A lower circumferential plate is provided, and the lower circumferential plate is partially attached to the brackets of the core tube and the lower circumferential plate is wound around the core tube by rotating the core tube, and the lower circumferential plate is fixedly connected to the brackets and the core tube, so that the lower circumferential plate forms a frustum shape with a large top size and a small bottom size.

[0024] A further improvement in the manufacturing method of the large-space steel structure fork column bowl joint structure of the present invention is that before the core tube is erected on the assembly jig, it further includes:

[0025] An upper flange plate is provided, and the upper flange plate is arranged at intervals along the outer periphery of the upper circumferential plate and fixedly connected to the upper circumferential plate;

[0026] A partition plate is provided, and the partition plate is arranged at intervals along the core tube and fixedly connected to the corresponding upper flange plate;

[0027] A bracket stiffening plate is provided, and the bracket stiffening plate is fixedly connected between two adjacent partition plates.

[0028] A further improvement in the manufacturing method of the large-space steel structure fork column bowl joint structure of the present invention is that after the core tube is erected on the assembly jig, it further includes:

[0029] A lower flange plate is provided, and the lower flange plate is fixedly connected to the corresponding partition plate and the lower circumferential plate by rotating the core tube.

[0030] A further improvement in the manufacturing method of the large-space steel structure fork column bowl joint structure of the present invention is that it further includes:

[0031] A circumferential stiffening plate is provided, and the circumferential stiffening plate is fixedly connected between two adjacent brackets by rotating the core tube.

[0032] A further improvement in the manufacturing method of the large-space steel structure fork column bowl joint structure of the present invention is that the step of providing the core tube includes:

[0033] A steel plate is provided, and the steel plate is rolled into a cylindrical shape and connected to form a core tube;

[0034] An inner ring stiffening plate is provided, and the inner ring stiffening plate is fixedly arranged at intervals inside the core tube;

[0035] An inner longitudinal stiffening plate is provided, and the inner longitudinal stiffening plate is fixedly arranged at intervals inside the core tube. Description of the Drawings

[0036] Figure 1 This is a schematic structural diagram of the connection between the bowl-shaped joint structure of the forked column in the large-space steel structure of the present invention and the forked column.

[0037] Figure 2 This is the front view of the bowl-shaped joint structure of the forked column in the large-space steel structure of the present invention.

[0038] Figure 3 For Figure 2 This is the top view.

[0039] Figure 4 For Figure 3 This shows a schematic structural diagram of the stiffening rib in

[0040] Figure 5 This is the three-dimensional structural schematic diagram of the bowl-shaped joint structure of the forked column in the large-space steel structure of the present invention.

[0041] Figure 6 This is the partial structural schematic diagram of the bowl-shaped joint structure of the forked column in the large-space steel structure of the present invention.

[0042] Figure 7 This is the sectional view of the bowl-shaped joint structure of the forked column in the large-space steel structure of the present invention.

[0043] Figure 8 For Figure 7 This is the A-A sectional view in

[0044] Figure 9 This is the schematic structural diagram for preparing the core tube.

[0045] Figure 10 For Figure 9 This is the side view.

[0046] Figures 11 to 19 This shows a schematic structural diagram of the disassembly steps for manufacturing the bowl-shaped joint structure of the forked column in the large-space steel structure.

[0047] Figure 20 This is the flow chart of the manufacturing method of the bowl-shaped joint structure of the forked column in the large-space steel structure of the present invention. Specific embodiments

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0049] Refer to Figure 1, the present invention provides a large - space steel - structure tree - branch column bowl - shaped joint structure and its manufacturing method. This tree - branch column bowl - shaped joint structure can not only ensure the safety and reliability of the steel - structure system, but also meet the requirements of the structural system for super - large spaces, achieving a good architectural effect of simple and beautiful structure. It is used to solve the problem that the existing tree - branch column joints are difficult to balance in terms of large - span space effect, building appearance, and safe force - bearing, and are limited in use. The bowl - shaped joint structure of the present invention is convenient and fast to manufacture, well - organized, and the supporting jig can be reused, suitable for the manufacture and assembly of various types of bowl - shaped joints, being economical and applicable. The bowl - shaped joint structure is heavy, and by adding stiffening plates, the joint has high stiffness and strong force - bearing capacity. The bowl - shaped joint connects the upper and lower parts, making the entire large - span space roof steel structure form a triangular stable force - bearing system, which can not only bear vertical loads but also resist bending, and can optimize measures such as wind - resisting columns and braces in the large - span space roof steel structure. The following will explain the large - space steel - structure tree - branch column bowl - shaped joint structure and its manufacturing method of the present invention with reference to the accompanying drawings.

[0050] Refer to Figure 1 , which shows a schematic structural view of the large - space steel - structure tree - branch column bowl - shaped joint structure of the present invention connected with a bifurcated column. Refer to Figure 2 , which shows the front view of the large - space steel - structure tree - branch column bowl - shaped joint structure of the present invention. The following will explain the large - space steel - structure tree - branch column bowl - shaped joint structure of the present invention in combination with Figure 1 and Figure 2 .

[0051] As Figure 1 and Figure 2 shown, the large - space steel - structure tree - branch column bowl - shaped joint structure 20 of the present invention includes a core tube 21, an upper circumferential plate 22, brackets 23, and a lower circumferential plate 24. As shown in combination with Figure 5 and Figure 6 , the upper circumferential plate 22 is sleeved on the core tube 21 and fixedly connected to the core tube 21. The upper circumferential plate 22 is in the shape of a frustum of a cone with a larger top size and a smaller bottom size; there are a plurality of brackets 23, and the plurality of brackets 23 are arranged at intervals along the outer circumference of the upper circumferential plate 22. The brackets 23 are fixedly connected to the upper circumferential plate 22 and the core tube 21; the lower circumferential plate 24 is sleeved on the core tube 21 and the lower circumferential plate 24 is located below the upper circumferential plate 22. The lower circumferential plate 24 is in the shape of a frustum of a cone with a larger top size and a smaller bottom size, and the lower circumferential plate 24 is attached to the brackets 23 and fixedly connected to the brackets 23 and the core tube 21.

[0052] By clamping the bracket 23 between the upper circumferential plate 22 and the lower circumferential plate 24, the structural strength and structural stability of the bracket 23 can be improved. Moreover, the part of the bracket 23 located between the upper circumferential plate 22 and the lower circumferential plate 24 is also fixedly connected to the core tube 21, further improving the structural stability of the bracket 23. The end of the bracket 23 is used to connect the bifurcated column 11, providing stable, firm and reliable support for the bifurcated column 11. A tie rod 111 is supported and connected between two adjacent bifurcated columns 11, and the bifurcated columns 11 are connected together by the tie rod 111 to form an integral structure. A support column 12 is arranged at the bottom of the core tube 21. The support column 12 stands on the ground, providing support for the bowl joint structure 20 and the bifurcated column 11. The bowl joint structure 20 forms a bowl-shaped structure through the upper circumferential plate 22, the lower circumferential plate 24 and the core tube 21. This bowl-shaped structure has good integrity, can transmit force reasonably and has strong structural stability.

[0053] In a specific embodiment of the present invention, in combination with Figure 1 and Figure 5 as shown, the end of the bracket 23 protrudes from the upper circumferential plate 22 and the lower circumferential plate 24 to form a connection end 231, and the bifurcated column 11 is connected through the connection end 231.

[0054] In a specific embodiment of the present invention, as shown in Figure 5 and Figure 6 as shown, a circumferential stiffening plate 25 is connected between two adjacent brackets 23. The circumferential stiffening plate 25 is fixedly connected to the corresponding bracket 23, which can provide a stiffening function for the bracket 23 and improve the structural strength of the bracket 23. Preferably, the circumferential stiffening plate 25 is also fixedly connected to the upper circumferential plate 22 and the lower circumferential plate 24, improving the structural stability of the circumferential stiffening plate 25.

[0055] Furthermore, in combination with Figure 4 and Figure 8 as shown, a bracket stiffening plate 236 is arranged inside the bracket 23. The bracket stiffening plate 236 can improve the structural strength of the bracket 23. Preferably, the setting position of the bracket stiffening plate 236 corresponds to the setting position of the circumferential stiffening plate 25. Thus, multiple bracket stiffening plates 236 and multiple circumferential stiffening plates 25 are connected into a ring. By arranging the bracket stiffening plates 236 and the circumferential stiffening plates 25 correspondingly to form a ring, the brackets 23 can be connected to form an integral body, improving the structural stiffness of each bracket 23 and also improving the integrity of the bracket 23.

[0056] In a specific embodiment of the present invention, as shown in Figure 5 and Figure 6As shown in the figure, the bracket 23 includes an upper flange plate 232 fixedly connected to the upper circumferential plate 22, a partition plate 233 fixedly connected to the upper flange plate 232, and a lower flange plate 234 fixedly connected to the partition plate 233. The lower flange plate 234 is also fixedly connected to the lower circumferential plate 24. The partition plate 233 is further fixedly connected to the upper circumferential plate 22 and the core tube 21. Preferably, the partition plate 233 is a strip-shaped plate, which is vertically fixed to the core tube 21. The end of the partition plate 233 is bent and vertically fixed to the upper circumferential plate 22 and partially extends out of the upper circumferential plate 22 and is fixedly connected to the upper flange plate 232. The end face of the partition plate 233 is flush with the end face of the upper flange plate 232. The partition plate 233 is also vertically connected to the lower circumferential plate 24. The partition plate 233 is vertically supported between the upper circumferential plate 22 and the lower circumferential plate 24, improving the integrity of the bowl-shaped joint structure 20. And the partition plate 233 is vertically fixedly connected to the core tube 21 along the surface of the core tube 21. The partition plate 233 is also fixedly connected to the bifurcated column 11, and can transfer the gravity of the bifurcated column 11 to the surface of the core tube 21, and then be transferred downward by the core tube 21, making the force transmission of the bowl-shaped joint structure 20 more reasonable.

[0057] In a preferred embodiment, there are two partition plates 233 connected to one upper flange plate 232, so that the end of the formed bracket 23 is box-shaped, and the opening of the bracket 23 is covered with a port closure 235. In another preferred embodiment, there is one partition plate 233 on one upper flange plate 232, thus forming a bracket 23 with an I-shaped end face.

[0058] Furthermore, when arranging the bracket stiffener 236, the bracket stiffener 236 is vertically connected to two adjacent partition plates 233.

[0059] As Figure 1 , Figure 3 and Figure 5 shown, the brackets 23 are symmetrically arranged on both sides of the core tube 21. By symmetrically arranging the brackets 23, the force of the bowl-shaped joint structure 20 is more stable.

[0060] As Figure 6 and Figure 7 shown, additional stiffening plates 26 are arranged at intervals on the outside of the lower circumferential plate 24, and the additional stiffening plates 26 are fixedly connected to the core tube 21 and the lower circumferential plate 24.

[0061] In a specific embodiment of the present invention, as Figure 5 and Figure 7 shown, a part of the end of the core tube 21 is placed in the space formed by the enclosure of the upper circumferential plate 22.

[0062] Furthermore, a plurality of inner ring stiffening plates 211 and inner longitudinal stiffening plates 212 are arranged at intervals inside the core tube 21. The inner longitudinal stiffening plates 212 are longitudinally arranged on the inner wall of the core tube 21 and are arranged at intervals. The inner ring stiffening plates 211 are arranged circumferentially, and the inner ring stiffening plates 211 are supported and connected to two adjacent inner longitudinal stiffening plates 212. The inner ring stiffening plates 211 are arranged at intervals along the length direction of the core tube 21. By providing the inner ring stiffening plates 211 and the inner longitudinal stiffening plates 212, the structural strength of the core tube 21 is increased.

[0063] Still further, a concrete structure is also poured inside the core tube 21. By using the concrete structure to improve the structural strength of the core tube 21, it can withstand the upper roof moment transmitted by the bifurcated column 11.

[0064] The bowl-shaped joint structure of the present invention is heavy in weight, and a plurality of stiffening plates are arranged inside, making the joint have a large stiffness and stronger load-bearing capacity. The bowl-shaped joint connects the upper and lower parts, making the entire large-span space roof steel structure form a triangular stable stress system, which can not only bear vertical loads but also resist bending, and can optimize measures such as wind columns and diagonal braces of the large-span space roof steel structure.

[0065] The present invention also provides a manufacturing method for the bowl-shaped joint structure of the large-space steel structure tree-shaped column. The manufacturing method will be described below.

[0066] As Figure 20 shown, the manufacturing method for the bowl-shaped joint structure of the large-space steel structure tree-shaped column of the present invention is characterized by including the following steps:

[0067] Execute step S101. As Figure 11 shown, provide the core tube 21 and erect the core tube 21 on the workbench 31; then execute step S102;

[0068] Execute step S102. In combination with Figure 13 shown, provide the upper circumferential plate 22. The provided upper circumferential plate 22 is in the shape of a frustum of a cone with a large top size and a small bottom size. Sleeve the upper circumferential plate 22 on the core tube 21 with the top facing downwards, and place the top of the upper circumferential plate 22 on the workbench 31; then execute step S103;

[0069] Execute step S103. In combination with Figure 16 shown, provide the assembly jig 33 and support the assembly jig 33 on the ground; then execute step S104;

[0070] Execute step S104. Provide the connecting steel pipe 34, connect the connecting steel pipe 34 to both ends of the core tube 21, and place the connecting steel pipe 34 on the corresponding assembly jig 33 to support the core tube 21 by using the assembly jig 33; then execute step S105;

[0071] Perform step S105, arrange brackets 23 at intervals along the outer periphery of the upper circumferential plate 22, and fixedly connect the arranged brackets 23 to the upper circumferential plate 22 and the core tube 21; then perform step S106;

[0072] Perform step S106, provide a lower circumferential plate 24, partially attach the lower circumferential plate 24 to the brackets 23 of the core tube 21 and make the lower circumferential plate 24 wind around the core tube 21 by rotating the core tube 21, and fixedly connect the lower circumferential plate 24 to the brackets 23 and the core tube 21, so that the lower circumferential plate 24 forms a frustum shape with a large top size and a small bottom size.

[0073] In a specific embodiment of the present invention, as Figure 9 and Figure 10 shown, the steps of providing the core tube include: providing a steel plate, rolling the steel plate into a cylindrical shape and connecting to form the core tube 21; providing inner ring stiffening plates 211, and fixedly arranging the inner ring stiffening plates 211 at intervals inside the core tube 21; providing inner longitudinal stiffening plates 212, and fixedly arranging the inner longitudinal stiffening plates 212 at intervals inside the core tube 21.

[0074] After rolling the steel plate into a cylindrical shape, weld the longitudinal seams to obtain the core tube 21. Then, according to the installation design position requirements of the core tube 21, fixedly connect the inner ring stiffening plates 211 and the inner longitudinal stiffening plates 212 inside the core tube 21. The inner ring stiffening plates 211 are preferably annular plates, and the inner longitudinal stiffening plates 212 are vertically connected between two adjacent inner ring stiffening plates 211.

[0075] Further, when manufacturing the core tube 21, it is manufactured on a welding jig 32. The welding jig 32 includes a bottom plate 321, brackets 322 fixed on the bottom plate 321, and wheels 323 rotatably installed on the brackets 322. Use the wheels 323 to support the cylindrical steel plate, and weld the steel plate on the wheels 232 to form the core tube 21. When installing the inner ring stiffening plates 211 and the inner longitudinal stiffening plates 212, the rotation of the wheels 232 can facilitate the assembly and positioning.

[0076] Still further, as Figure 11 and Figure 12 shown, the workbench 31 has a flat working surface. The workbench 31 is also provided with supports 311. The supports 311 are steel profiles, and the working surface of the workbench 31 is supported by the supports 311 at a certain height. After manufacturing the core tube 21, stand the core tube 21 on the working surface. Then provide the upper circumferential plate 22, put the upper circumferential plate 22 on the core tube 21 with the top facing downwards, let the top of the upper circumferential plate 22 be placed on the working surface, and then use carbon dioxide gas shielded welding to weld the upper circumferential plate 22 and the core tube 21.

[0077] Then, as Figure 13As shown, before the core tube is erected on the assembly jig, it further includes:

[0078] Provide the upper flange plate 232, arrange the upper flange plate 232 at intervals along the outer periphery of the upper circumferential plate 22 and fixedly connect it with the upper circumferential plate 22. Weld the upper flange plate 232 and the upper circumferential plate 22 for fixation;

[0079] Combine Figure 14 As shown, provide the partition plate 233, arrange the partition plate 233 at intervals along the core tube 21 and fixedly connect it with the corresponding upper flange plate 232. There are a plurality of partition plates 233. At this time, assemble the partition plates 233 in sequence, and leave two partition plates 233 on the opposite sides not assembled first. The partition plate 233 is also fixedly connected with the outer periphery of the core tube 21. Welding is also used for fixation when connecting the partition plate 233;

[0080] Combine Figure 15 As shown, provide the bracket stiffening plate 236, and fixedly connect the bracket stiffening plate 236 between two adjacent partition plates 233. When there are two partition plates 233 on the bracket 23, arrange the bracket stiffening plate 236 between the two partition plates 233. When there is one partition plate 233 on the bracket 23, arrange the circumferential stiffening plate 25 between this partition plate 233 and the partition plate 233 of another bracket 23 subsequently.

[0081] Combine Figure 16 As shown, the provided assembly jig 33 includes a frame body 331, a mounting seat 332 and rollers 333. The frame body 331 is supported on the ground, the mounting seat 332 is installed and fixed on the frame body 331, and the rollers 333 are rotatably installed on the mounting seat 332. Two mounting seats 332 and two rollers 333 are arranged on one frame body 331. Use the two rollers 333 to support the tubular structure and provide the function of rotation for the tubular structure through the rotation of the rollers 333.

[0082] Support two assembly jigs 33 opposite to each other on the ground, set connection steel pipes 34 at both ends of the core tube 21, extend the core tube 21 through the setting of the connection steel pipes 34, so that the two connection steel pipes 34 can be placed on the rollers 333 of the assembly jig 33, and the connection steel pipes 34 can be rotated through the rollers 333, and then the core tube 21 can also be rotated.

[0083] Provide the lower circumferential plate 24. The provided lower circumferential plate 24 is a flat plate. Stick the end of the lower circumferential plate 24 on the core tube 21 and the corresponding bracket 23, weld the lower circumferential plate 24 with the core tube 21 and the corresponding bracket 23, and gradually weld and fix the lower circumferential plate 24 with the core tube 21 and the corresponding bracket 23 by rotating the core tube 21.

[0084] Then combine Figure 17As shown, a circumferential stiffening plate 25 is provided. By rotating the core tube 21, the circumferential stiffening plate 25 is welded between two adjacent corbels 23, and the circumferential stiffening plate 25 is also welded and fixed to the corresponding upper circumferential plate 22 and lower circumferential plate 24.

[0085] Then, in combination with Figure 18 As shown, at this time, the two reserved partitions 233 are welded and fixed.

[0086] In combination with Figure 19 As shown, after the core tube is erected on the assembly jig, it further includes:

[0087] A lower flange plate 234 is provided. By rotating the core tube 21, the lower flange plate 234 is fixedly connected to the corresponding partition 233 and lower circumferential plate 24.

[0088] The lower flange plate 234, the partition 233 and the upper flange plate 232 form the corbel 23. The end shape of the corbel 23 is I-shaped or box-shaped. At the end of the box-shaped corbel, a port stiffening plate 235 is provided, and the port stiffening plate 235 is welded and fixed to the corresponding lower flange plate 234, partition 233 and upper flange plate 232.

[0089] Remove the core tube 21 from the assembly jig 33 and remove the connecting steel pipes 34 at both ends of the core tube 21, then the production of the bowl joint structure 20 is completed.

[0090] The manufacturing method of the bowl joint of the present invention is to lay down the manufactured bowl joint core tube, and use the steel pipe to horizontally rotate on the assembly jig for welding components such as stiffening plates, partitions, and ring plates, so that most of the welds become flat welds, which is more convenient for welding, improves the processing efficiency and the quality of the finished components, and the supporting jig can be reused, applicable to the manufacture and assembly of various types of bowl joints, and is economical and applicable.

[0091] The present invention has been described in detail above in combination with the embodiments of the drawings. Those of ordinary skill in the art can make various variations of the present invention according to the above description. Therefore, some details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope of the appended claims.

Claims

1. A bowl-shaped joint structure for a large-space steel structure tree branch column, characterized in that, Comprising: Core tube; An upper circumferential plate sleeved on the core tube and fixedly connected to the core tube, the upper circumferential plate being frustum-shaped with a larger top size and a smaller bottom size; A plurality of corbels arranged at intervals along the outer periphery of the upper circumferential plate, the corbels being fixedly connected to the upper circumferential plate and the core tube; And A lower circumferential plate sleeved on the core tube and located below the upper circumferential plate, the lower circumferential plate being frustum-shaped with a larger top size and a smaller bottom size, the lower circumferential plate being attached to the corbels and fixedly connected to the corbels and the core tube; A circumferential stiffening plate is connected between two adjacent corbels; The corbel includes an upper flange plate fixedly connected to the upper circumferential plate, a partition plate fixedly connected to the upper flange plate, and a lower flange plate fixedly connected to the partition plate; The lower flange plate is also fixedly connected to the lower circumferential plate; The partition plate is also fixedly connected to the upper circumferential plate and the core tube.

2. The bowl-shaped joint structure of the large-space steel structure tree fork column according to claim 1, characterized in that, A plurality of inner ring stiffening plates and a plurality of inner longitudinal stiffening plates are arranged at intervals inside the core tube.

3. The bowl-shaped joint structure of the large-space steel structure tree-shaped column according to claim 1, characterized in that Corbel stiffening plates are provided inside the corbels.

4. A manufacturing method of a large - space steel structure fork - column bowl joint structure as described in any one of claims 1 to 3, characterized in that, Including the following steps: Provide a core tube and erect the core tube on a workbench; Provide an upper circumferential plate, the provided upper circumferential plate being frustum-shaped with a larger top size and a smaller bottom size, sleeving the upper circumferential plate on the core tube with the top facing downwards, and placing the top of the upper circumferential plate on the workbench; Provide an assembly jig and support the assembly jig on the ground; Provide connecting steel pipes, connect the connecting steel pipes to both ends of the core tube, and place the connecting steel pipes on the corresponding assembly jigs to lift the core tube by using the assembly jigs; Arrange corbels at intervals along the outer periphery of the upper circumferential plate, and fixedly connect the arranged corbels to the upper circumferential plate and the core tube; and Provide a lower circumferential plate, partially attach the lower circumferential plate to the corbels of the core tube and rotate the core tube to wind the lower circumferential plate around the core tube, and fixedly connect the lower circumferential plate to the corbels and the core tube, so that the lower circumferential plate forms a frustum shape with a larger top size and a smaller bottom size.

5. The manufacturing method of the large-space steel structure fork column bowl node structure according to claim 4, characterized in that, Before erecting the core tube on the assembly jig, it further includes: Provide upper flange plates, arrange the upper flange plates at intervals along the outer periphery of the upper circumferential plate and fixedly connect them to the upper circumferential plate; Provide partition plates, arrange the partition plates at intervals along the core tube and fixedly connect them to the corresponding upper flange plates; Provide corbel stiffening plates and fixedly connect the corbel stiffening plates between two adjacent partition plates.

6. The manufacturing method of the large-space steel structure tree-column bowl node structure according to claim 5, characterized in that, After erecting the core tube on the assembly jig, it further includes: Provide lower flange plates and fixedly connect the lower flange plates to the corresponding partition plates and the lower circumferential plate by rotating the core tube.

7. The manufacturing method of the fork column bowl joint structure of the large-space steel structure according to claim 4, characterized in that, It further includes: Provide circumferential stiffening plates and fixedly connect the circumferential stiffening plates between two adjacent corbels by rotating the core tube.

8. The manufacturing method of the large-space steel structure tree-branch column bowl node structure according to claim 4, characterized in that The step of providing the core tube includes: Provide steel plates, roll the steel plates into a cylindrical shape and connect them to form a core tube; Provide inner ring stiffening plates and fixedly arrange the inner ring stiffening plates at intervals inside the core tube; Provide an internal longitudinal stiffening plate and fixedly arrange the internal longitudinal stiffening plate at intervals inside the core tube.

Images