Steel structure column splicing node and splicing method

Abstract

The present invention discloses a steel structure column splicing node and a splicing method, which relate to the field of building construction technology. The invention solves the problems of complex construction and low connection strength of existing steel structure column assembly nodes, reduces construction complexity, and improves the rigidity and strength of the connection nodes. The specific scheme is as follows: it comprises an upper steel column, an intermediate steel column and a lower steel column fixedly connected in sequence from top to bottom, the upper steel column, the intermediate steel column and the lower steel column are coaxially arranged, a cantilever beam section is fixedly provided on the outer wall of the intermediate steel column to form a node connector, the node connector is processed in a factory, a plurality of first partitions are fixedly provided inside the intermediate steel column and are in the same horizontal plane as the flange of the cantilever beam section, the top end of the intermediate steel column is connected to the inner wall of the upper steel column through a sleeve, and the top end of the intermediate steel column is welded to the bottom end groove of the upper steel column.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a steel structure column splicing node and a splicing method. Background Art

[0002] Steel, as a recyclable green and environmentally friendly building material, has the advantages of high strength, light weight, good machinability and easy construction. It can be industrialized and reduce construction pollution.

[0003] The inventors found that due to the installation position limitation of the cantilever beam section, it is necessary to lift and weld at the same time during welding at the construction site. This operation cannot guarantee the horizontality, position accuracy and weld quality of the cantilever beam section. Therefore, the existing steel structure columns with cantilever beam sections are generally welded together in the factory. The overall size is too large and transportation is difficult. The transportation problem can be solved by dividing the steel structure columns into sections. However, in the process of assembling multiple sections of steel structure columns, the coaxiality between adjacent steel structure column sections needs to be ensured, and correction is required when tilted. The overall positioning process and construction process are complicated, and the connection strength at the assembly nodes cannot be guaranteed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a steel structure column splicing node and splicing method, a first partition is set inside the middle steel column, the first partition is used to improve the rigidity of the middle steel column, a cantilever beam section is set outside the middle steel column to form a node connector, the second partition is embedded in the upper end of the lower steel column and fixed, and the above process is completed in the factory; after the upper steel column, the node connector and the lower steel column are transported to the construction site respectively, the upper end of the lower steel column and the lower end of the middle steel column are groove welded, and then hoisted and installed, and finally the middle steel column and the upper steel column are connected by a sleeve, which not only plays a guiding role, but also improves the rigidity and strength of the connection, solving the problems of complex construction and low connection strength of the existing steel structure column assembly nodes.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, the present invention provides a steel structure column splicing node, comprising an upper steel column, an intermediate steel column and a lower steel column fixedly connected in sequence from top to bottom, the upper steel column, the intermediate steel column and the lower steel column are coaxially arranged, a cantilever beam segment is fixed on the outer wall of the intermediate steel column to form a node connector, the node connector is processed in a factory, a plurality of first partitions are fixed inside the intermediate steel column and are in the same horizontal plane as the flange of the cantilever beam segment, the top end of the intermediate steel column is connected to the inner wall of the upper steel column through a sleeve, and the top end of the intermediate steel column is welded to the bottom end groove of the upper steel column.

[0007] As a further implementation, the upper steel column, the middle steel column and the lower steel column are of the same size, and the cross-sectional size of the sleeve is the same as the internal cross-sectional size of the middle steel column.

[0008] As a further implementation method, one end of the sleeve is inserted from the top of the middle steel column and fixedly connected to the first partition, and the other end is inserted into the upper steel column and fixedly connected to the inner wall of the upper steel column.

[0009] As a further implementation, the first partition is arranged horizontally and coaxially with the middle steel column.

[0010] As a further implementation method, a second partition is fixedly provided inside the top end of the lower steel column, and the upper surface of the second partition is flush with the top end of the lower steel column.

[0011] As a further implementation, the second partition is fixedly connected to the bottom end of the middle steel column.

[0012] As a further implementation method, the bottom ends of the upper steel columns and the middle steel columns are both provided with grooves for welding.

[0013] As a further implementation method, the upper steel column, the middle steel column and the lower steel column have the same shape and are all one of a circular tube steel column structure and a box-type column structure.

[0014] In a second aspect, the present invention provides a method for splicing a steel structure column splicing node, which is as follows:

[0015] Transport the processed components to the construction site;

[0016] Bevel weld the top of the lower steel column and the bottom of the middle steel column, and hoist and install them as a whole to the designated location on site;

[0017] Connect the bottom end of the casing to the first partition, hoist the upper steel column to the top of the middle steel column, insert the top end of the casing into the upper steel column, and perform groove welding on the upper steel column and the middle steel column.

[0018] As a further implementation method, the node connection piece is processed in the factory, and during the installation process of the cantilever beam section, it is ensured that the flange of the cantilever beam section and the first partition are in the same horizontal plane.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) The present invention sets a first partition inside the middle steel column. The first partition is on the same horizontal plane as the flange of the cantilever beam section, and can support the connection between the flange of the cantilever beam section and the middle steel column, so as to improve the rigidity of the middle steel column by using the first partition. At the same time, the middle steel column and the inner wall of the upper steel column are connected by using a sleeve, which not only plays a guiding role, but also effectively ensures the coaxiality of the upper steel column and the middle steel column, and reduces the difficulty of installing the upper steel column, so as to improve the connection strength, rigidity and deformation resistance of the connection between the upper steel column and the middle steel column by using the sleeve.

[0021] (2) The bottom end of the sleeve of the present invention contacts and is fixed to the first partition, thereby realizing the positioning of the sleeve and facilitating the fixed connection between the sleeve and the middle steel column. At the same time, the supporting stability of the sleeve is improved, which not only facilitates the positioning of the upper steel column, but also ensures the compressive and tensile strength of the connection between the upper steel column and the middle steel column.

[0022] (3) The upper surface of the second partition of the present invention is flush with the top of the lower steel column to improve the strength of the top of the lower steel column, reduce the influence of the groove on the strength of the top of the lower steel column, and improve the connection stability between the lower steel column and the middle steel column.

[0023] (4) The bottom ends of the upper steel columns and the middle steel columns of the present invention are both provided with grooves for welding, so that they are fixed by groove welding to achieve complete penetration of the steel column connection, achieve equal strength connection, and improve the mechanical properties of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] FIG1( a ) is a schematic diagram of the overall structure of a steel column assembly node with a cantilever beam segment according to one or more embodiments of the present invention;

[0026] FIG1( b ) is a schematic cross-sectional view of a steel column assembly node with a cantilever beam segment according to one or more embodiments of the present invention;

[0027] FIG2( a ) is a schematic diagram of the front structure of an intermediate steel column according to one or more embodiments of the present invention;

[0028] FIG2( b ) is a schematic cross-sectional view of an intermediate steel column according to one or more embodiments of the present invention;

[0029] Figure 3 is a schematic diagram of an exploded structure of a node connector according to one or more embodiments of the present invention;

[0030] Figure 4is a schematic diagram of an exploded structure of a steel column assembly node with a cantilever beam segment according to one or more embodiments of the present invention;

[0031] In the figure: the distances or sizes between parts are exaggerated to show the positions of the parts, and the diagram is for illustration only;

[0032] Among them, 1. upper steel column; 2. node connector; 20. middle steel column; 21. first partition; 22. casing; 23. cantilever beam section; 3. lower steel column; 31. second partition. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0034] As introduced in the background technology, the existing steel structure columns with cantilever beam sections are too large and difficult to transport because the cantilever beam sections have been welded to the steel structure columns in the factory. In addition, during the assembly of multiple sections of steel structure columns, the coaxiality between adjacent steel structure column sections needs to be ensured, and correction is required when tilted. The overall positioning process and construction process are complicated, and the connection strength at the assembly nodes cannot be guaranteed. In order to solve the above technical problems, the present invention proposes a steel structure column splicing node and a splicing method.

[0035] Example 1

[0036] In a typical embodiment of the present invention, Figure 1(a)-Figure 4 As shown, a steel structure column splicing node is proposed, including an upper steel column 1, a node connector 2 and a lower steel column 3. The upper steel column 1 is fixedly arranged at the top of the node connector 2, and the lower steel column 3 is fixedly arranged at the bottom of the node connector 2. The upper steel column 1, the node connector 2 and the lower steel column 3 are coaxially arranged.

[0037] The node connection part 2 is composed of an intermediate steel column 20, a first partition plate 21, a sleeve 22 and a cantilever beam section 23 processed in the factory. Among them, the intermediate steel column 20 is a circular tube steel column structure. The outer diameter and inner diameter of the intermediate steel column 20 are the same as those of the upper steel column 1 and the lower steel column 3. There are several first partition plates 21 and they are fixedly set inside the intermediate steel column 20. The first partition plates 21 are arranged horizontally up and down, and the sleeve 22 is inserted into the intermediate steel column 20. The cantilever beam section 23 is fixedly set on the outer surface of the intermediate steel column 20 along the circumferential direction of the intermediate steel column 20.

[0038] It should be noted that, in this embodiment, the upper steel column 1, the middle steel column 20, and the lower steel column 3 are circular steel pipes for illustration. In other embodiments, the upper steel column 1, the middle steel column 20, and the lower steel column 3 may also be box-type column structures, which can be determined according to actual design requirements.

[0039] Specifically, there are two first partitions 21, which are circular steel plate structures. The diameter of the first partition 21 is the same as the inner diameter of the middle steel column 20. The first partition 21 is horizontally fixed in the middle steel column 20 by welding, that is, the first partition 21 is coaxially arranged with the middle steel column 20.

[0040] It can be understood that when the middle steel column 20 is a box-type column structure, the first partition plate 21 is a square plate structure, and the size of the first partition plate 21 is the same as the internal cross-sectional size of the middle steel column 20 .

[0041] The cantilever beam section 23 is any one of an H-shaped steel structure, a rectangular steel pipe and the like. The cantilever beam section 23 is fixed horizontally on the outer surface of the middle steel column 20 by welding in a factory.

[0042] Among them, the first partition 21 and the flange of the cantilever beam section 23 are in the same horizontal plane, so as to support the connection between the flange of the cantilever beam section 23 and the middle steel column 20, so as to improve the overall strength of the node connector 2 and avoid deformation of the middle steel column 20.

[0043] In order to ensure the reinforcing effect of the first partition 21 , the first partition 21 is a steel plate structure without holes.

[0044] The sleeve 22 has a cross-sectional dimension identical to that of the inner cross-sectional dimension of the intermediate steel column 20 . It may be a tubular structure or a box-type column structure. For example, when the sleeve 22 is a tubular structure, the outer diameter of the sleeve 22 is identical to the inner diameter of the circular tubular intermediate steel column 20 .

[0045] The sleeve 22 is inserted from the top of the middle steel column 20. Specifically, the bottom end of the sleeve 22 is inserted into the middle steel column 20 from the top of the middle steel column 20, and the top end of the sleeve 22 extends outward from the top of the middle steel column 20 for connection with the upper steel column 1.

[0046] The cross-sectional dimensions of the sleeve 22 are the same as the internal cross-sectional dimensions of the upper steel column 1. The sleeve 22 extends out of one end (i.e., the top end) of the intermediate steel column 20 and is inserted into the upper steel column 1 to guide the upper steel column 1, effectively ensuring the coaxiality of the upper steel column 1 and the intermediate steel column 20, reducing the difficulty of installing the upper steel column 1, and at the same time, the sleeve 22 can be used to improve the connection strength, rigidity and deformation resistance of the connection between the upper steel column 1 and the intermediate steel column 20.

[0047] Among them, since the first partition 21 is fixed horizontally inside the middle steel column 20, after the sleeve 22 is inserted into the middle steel column 20, the bottom end of the sleeve 22 contacts the first partition 21 located above, thereby realizing the positioning of the sleeve 22, improving the supporting stability of the sleeve 22, and ensuring the compressive resistance of the connection between the upper steel column 1 and the middle steel column 20.

[0048] A second partition plate 31 is fixed inside the top end of the lower steel column 3 . The upper surface of the second partition plate 31 is flush with the top end of the lower steel column 3 . The second partition plate 31 is fixed to the lower steel column 3 by welding.

[0049] The second partition 31 is also fixedly connected to the bottom end of the middle steel column 20. The second partition 31 plays the role of supporting the lower steel column 3 to increase the strength of the top end of the lower steel column 3, reduce the influence of the groove on the strength of the top end of the lower steel column 3, improve the connection stability between the lower steel column 3 and the middle steel column 20, and ensure its compressive resistance.

[0050] The bottom end of the upper steel column 1 and the bottom end of the middle steel column 20 are both provided with grooves for welding. The groove angles of the bottom end of the upper steel column 1 and the bottom end of the middle steel column 20 are the same, so they are fixed by groove welding to achieve complete penetration of the steel column connection, achieve equal strength connection, and improve the mechanical properties of the connection.

[0051] Example 2

[0052] In another typical embodiment of the present invention, a method for assembling a steel structure column splicing node is proposed, which is specifically as follows:

[0053] The middle steel column 20, the first partition plate 21 and the cantilever beam section 23 are processed and assembled in a factory. Specifically, the cantilever beam section 23 is fixed horizontally on the outer surface of the middle steel column 20 by welding in the factory.

[0054] Determine the specific installation position of the first partition 21 in the middle steel column 20 according to the connection position relationship between the cantilever beam section 23 and the middle steel column 20, and fix the first partition 21 in the middle steel column 20;

[0055] Bevel the bottom ends of the upper steel column 1 and the middle steel column 20, and securely install the second partition plate 31 inside the top end of the lower steel column 3 so that the upper surface of the second partition plate 31 is flush with the top end of the lower steel column 3.

[0056] Transport the processed upper steel column 1, node connector 2 and lower steel column 3 to the construction site;

[0057] Install the node connector 2 above the lower steel column 3, adjust the position of the intermediate steel column 20 so that the intermediate steel column 20 is coaxial with the lower steel column 3, fix the lower end of the intermediate steel column 20 to the second partition 31, and weld the top of the lower steel column 3 to the groove of the bottom of the intermediate steel column 20 by groove welding. Then, hoist the node connector 2 and the lower steel column 3 as a whole to the designated location on the construction site and install them;

[0058] Insert the sleeve 22 into the middle steel column 20 from the top, so that the bottom end of the sleeve 22 contacts and is fixed to the top first partition 21;

[0059] Hoist the upper steel column 1 to the top of the middle steel column 20 so that the top of the sleeve 22 is inserted into the upper steel column 1. Use the sleeve 22 to guide the upper steel column 1 to facilitate the installation of the upper steel column 1 and ensure the coaxiality between the upper steel column 1 and the middle steel column 20. Perform groove welding between the upper steel column 1 and the middle steel column 20 to complete the connection of the steel structure column splicing node with the cantilever beam section.

[0060] Since the node connector 2 is transported and installed separately from the lower steel column 3 and the upper steel column 1, the adverse effect of the existing method on operation caused by the excessive size of the cantilever beam section 23 and the overall size of the steel structure column is avoided, which is conducive to disassembly and maintenance. The node connector 2 has strong versatility, simple on-site installation process, guaranteed welding quality, direct force transmission, high node stiffness, and good mechanical properties.

[0061] Since the lower steel column 3 and the middle steel column 20 are welded on the ground at the construction site and then hoisted and installed, it is convenient to adjust the position and there is no need to compulsorily set the sleeve 22 to guide the middle steel column 20. It can be understood that in actual applications, in order to further reduce the difficulty of installation and improve the connection strength and rigidity between the lower steel column 3 and the middle steel column 20, a sleeve 22 structure can also be set in the lower steel column 3. The specific structure can be determined according to actual needs.

[0062] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A steel structure column splicing node, characterized in that: The structure comprises an upper steel column, an intermediate steel column, and a lower steel column that are fixedly connected in sequence from top to bottom. The upper steel column, the intermediate steel column, and the lower steel column are coaxially arranged. A cantilever beam segment is fixedly provided on the outer wall of the intermediate steel column to form a node connector. The node connector is processed in a factory. A plurality of first partitions are fixedly provided inside the intermediate steel column and are in the same horizontal plane as the flanges of the cantilever beam segment. The top end of the intermediate steel column is connected to the inner wall of the upper steel column through a sleeve. The top end of the intermediate steel column is groove-welded to the bottom end of the upper steel column. One end of the sleeve is inserted from the top of the middle steel column and fixedly connected to the first partition, and the other end is inserted into the upper steel column and fixedly connected to the inner wall of the upper steel column; A second partition is fixedly provided inside the top end of the lower steel column, and the upper surface of the second partition is flush with the top end of the lower steel column; the second partition is fixedly connected to the bottom end of the middle steel column.

2. A steel structure column splicing node according to claim 1, characterized in that: The upper steel column, the middle steel column and the lower steel column have the same size, and the cross-sectional size of the sleeve is the same as the internal cross-sectional size of the middle steel column.

3. A steel structure column splicing node according to claim 1, characterized in that: The first partition is arranged horizontally and coaxially with the middle steel column.

4. A steel structure column splicing node according to claim 1, characterized in that: The bottom ends of the upper steel columns and the middle steel columns are both provided with grooves for welding.

5. The steel structure column splicing node according to claim 1, characterized in that: The upper steel column, the middle steel column and the lower steel column have the same shape and are all one of a circular tube steel column structure and a box-type column structure.

6. A splicing method, utilizing the steel structure column splicing node according to any one of claims 1 to 5, characterized in that: The details are as follows: Transport the processed components to the construction site; Bevel weld the top of the lower steel column and the bottom of the middle steel column, and hoist and install them as a whole to the designated location on site; Connect the bottom end of the casing to the first partition, hoist the upper steel column to the top of the middle steel column, insert the top end of the casing into the upper steel column, and perform groove welding on the upper steel column and the middle steel column.

7. The splicing method according to claim 6, characterized in that: The node connection parts are processed in the factory to ensure that the flange of the cantilever beam section and the first partition are in the same horizontal plane during the installation process of the cantilever beam section.

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