Assembly type cold-formed thin-walled steel connecting device and using method thereof

Abstract

The invention provides a fabricated cold-formed thin-walled steel connecting device and a using method thereof, and particularly relates to the technical field of engineering construction. The connecting device is used for installing the U-shaped cold-formed thin-walled steel on a steel column and comprises a positioning assembly and a connecting assembly. The positioning assembly comprises a cap, a positioning rod and a magnetic positioning pin barrel; the positioning rod and the magnetic positioning pin barrel extend into an inner cavity of the steel column and are buckled with an opening in the top of the steel column through a cap; magnetic attraction positioning grooves are formed in four side walls of the magnetic positioning pin barrel; limiting through grooves are formed in the positions, corresponding to the magnetic attraction positioning grooves, of the side wall of the steel column. The connecting assembly penetrates through the limiting through groove through the magnetic limiting insertion plate and then is fixed to the magnetic positioning groove of the magnetic positioning pin barrel in a magnetic attraction mode. The U-shaped cold-formed thin-walled section steel is fixed to the side wall of the steel column through the connecting assembly and the U-shaped connecting piece. Through magnetic attraction positioning, bolt fixing and angular rib plate supporting, structural connection between the cold-formed thin-walled steel and the steel column is completed in multiple directions, stress is more stable, and safety is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering construction, and particularly relates to a fabricated cold-formed thin-walled steel connecting device and a use method thereof. BACKGROUND

[0002] Cold-formed thin-walled steel has been widely applied in low-rise residential buildings, multi-storey buildings, industrial plants, warehouse facilities, temporary buildings and existing building reinforcement and the like due to its advantages of light weight, high strength, high material utilization rate, easy factory production, convenient construction, green environmental protection and the like.

[0003] At present, the connection of cold-formed thin-walled steel and main vertical load-bearing members mainly depends on welding, bolt and self-tapping screw connection. Among them, welding is prone to deformation, has low construction efficiency and is difficult to construct; the bolt and self-tapping screw connection need to be connected with many rows, has high installation precision requirement and consumes a large amount of manpower, and the cold-formed thin-walled steel is not easy to stably install during installation, and has low safety factor. In addition, some adopt the connecting mode of connecting pieces, the connecting pieces of which need to be factory customized according to different specifications of cold-formed thin-walled steel, and have low universality, poor stability and low connection efficiency, in addition, the connecting position is fixed in the longitudinal direction or the transverse direction, and cannot be adjusted according to the site engineering, and has great limitation. SUMMARY

[0004] In order to overcome the defects of the prior art, the present application provides a fabricated cold-formed thin-walled steel connecting device and a use method thereof, and the specific technical scheme is as follows:

[0005] A fabricated cold-formed thin-walled steel connecting device is used for installing U-shaped cold-formed thin-walled steel on a steel column, and comprises a positioning assembly and a connecting assembly; the positioning assembly comprises a cap and a magnetic positioning pin barrel, and the cap is connected with the magnetic positioning pin barrel through a positioning rod; the positioning rod and the magnetic positioning pin barrel of the positioning assembly extend into the inner cavity of the steel column and are buckled with the opening at the top of the steel column through the cap; four side walls of the magnetic positioning pin barrel are provided with magnetic attraction positioning grooves; the positions corresponding to the magnetic attraction positioning grooves of the side wall of the steel column are provided with limiting through grooves; the connecting assembly is magnetically attracted and fixed with the magnetic attraction positioning grooves of the magnetic positioning pin barrel after penetrating through the limiting through grooves through a magnetic limiting plug plate; and the U-shaped cold-formed thin-walled steel is fixed with the side wall of the steel column through the connecting assembly and a U-shaped connecting piece.

[0006] Preferably, the connecting assembly comprises a main plate, an L-shaped web, a side wing plate and a bottom plate; the bottom plate is horizontally arranged at the bottom side of the main plate; the main plate comprises a connecting part and a mounting part arranged in sequence along the width direction of the main plate; the connecting part is provided with a plurality of first connecting holes; the mounting part is provided with a sliding cavity along the height direction thereof; the long wing plate of the L-shaped web is inserted into the sliding cavity; the short wing plate of the L-shaped web is parallel to the bottom plate; the side wing plate is vertically arranged on the side of the short wing plate of the L-shaped web away from the connecting part and between the short wing plate and the bottom plate; the side wing plate is provided with a plurality of second connecting holes at a position in height flush with the plurality of first connecting holes; and the magnetic limiting plug-in plate is vertically arranged on the central axis of the side of the main plate away from the L-shaped web along the height direction of the main plate.

[0007] Preferably, the first strong magnetic attraction module is arranged on the inner wall of the side of the magnetic attraction positioning groove away from the slot; the second strong magnetic attraction module is arranged on the end face of the side of the magnetic limiting plug-in plate away from the main plate; and the magnetic properties of the first strong magnetic attraction module and the second strong magnetic attraction module are opposite.

[0008] Preferably, the positioning rod is threadedly connected with the fixing hole at the top of the magnetic positioning pin barrel.

[0009] Further preferably, the width of the short wing plate of the L-shaped web is the same as the width of the bottom plate; the lengths of the short wing plate and the bottom plate are the same as the width of the main plate; the width of the connecting part is the same as the width of the side wing plate and the side plate of the U-shaped connecting piece; the size of the magnetic limiting plug-in plate is adapted to the size of the magnetic attraction positioning groove and the limiting through groove; and the size of the inner cavity of the sliding cavity is adapted to the size of the long wing plate of the L-shaped web.

[0010] Further preferably, an angular rib plate is vertically arranged at the middle of the bottom of the bottom plate.

[0011] More preferably, the left and right side plates of the U-shaped connecting piece are each provided with a third connecting hole corresponding to the first connecting hole or the second connecting hole.

[0012] A method for using a fabricated cold-formed thin-walled steel connecting device, which adopts the connecting device described above and specifically comprises the following steps:

[0013] S1. After the positioning rod of the positioning assembly is connected with the magnetic positioning pin barrel, the magnetic positioning pin barrel is inserted into the inner cavity of the steel column, the cap is buckled with the opening at the top of the steel column and is fixed with the four corners of the cap and the steel column through self-tapping screws, and at this time, each magnetic attraction positioning groove of the magnetic positioning pin barrel corresponds to a limiting through groove of the side wall of the steel column one by one;

[0014] S2. Four U-shaped cold-formed thin-walled steels and four connecting assemblies are prepared for standby use;

[0015] S3. Four connecting assemblies are arranged with one end of the angle-shaped rib plate downward, four magnetic limiting plug-in plates are respectively inserted into the limiting through slot of the four side walls of the steel column until the second strong magnetic suction module of the magnetic limiting plug-in plate is fixedly connected with the first strong magnetic suction module of the corresponding position magnetic suction positioning slot, and the limiting of the connecting assembly is completed;

[0016] S4. After the limiting is completed, the connecting part of the connecting assembly main plate coincides with the side wing plate of the adjacent connecting assembly, and the plurality of first connecting holes of the connecting part correspond to the plurality of second connecting holes of the side wing plate one by one; the straight angle edge of the angle-shaped rib plate perpendicular to the bottom plate is completely attached to the side wall of the steel column;

[0017] S5. One U-shaped cold-formed thin-walled steel is placed in the middle position between the short wing plate and the bottom plate of one of the connecting assembly L-shaped webs, and the insertion depth of the long wing plate of the corresponding L-shaped web in the main plate sliding cavity is adjusted to adapt to the height of the U-shaped cold-formed thin-walled steel; the two side plates of the U-shaped cold-formed thin-walled steel are fixed with the short wing plate and the bottom plate of the L-shaped web through self-tapping screws; the connecting plate of the U-shaped cold-formed thin-walled steel is bolted with one of the side plates of the U-shaped connecting piece, and the other side plate of the U-shaped connecting piece is attached to the side wing plate and is fixed with the first connecting hole of the connecting part of the adjacent connecting assembly through the third connecting hole of the U-shaped connecting piece, the second connecting hole of the side wing plate, and the first connecting hole of the connecting part of the adjacent connecting assembly, that is, the fixing of the U-shaped cold-formed thin-walled steel and one of the side walls of the steel column is completed;

[0018] S6. Repeat S5 to sequentially complete the connection and fixing between the remaining three U-shaped cold-formed thin-walled steels and the remaining three side walls of the steel column.

[0019] The beneficial effects of the present application are:

[0020] 1. The present application adopts the connecting mode of assembly butt joint, which is more convenient to disassemble and assemble;

[0021] 2. The present application can adapt to U-shaped cold-formed thin-walled steels of various sizes by adjusting the relative position of the L-shaped web and the main plate mounting part sliding cavity, and has higher universality;

[0022] 3. The present application can realize the position change of the U-shaped cold-formed thin-walled steel in the horizontal direction of the connecting assembly by changing the size of the U-shaped connecting piece, and then complete the horizontal adjustment of the engineering error;

[0023] 4. The present application completes positioning, supporting and fixing from multiple directions of top, bottom and side, and does not simply rely on the fixing mode of traditional welding, full bolt or self-tapping screw, and is not easy to deform, which saves time and labor and has better stability and safety. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings constituting the specification of the present application are used to provide further understanding of the present application and do not constitute improper limitation on the present application.

[0025] Figure 1 The overall structure of the assembled device according to the present application is shown in the figure;

[0026] Figure 2 The structure of the cap and the positioning rod is shown in the figure;

[0027] Figure 3 The structure of the magnetic positioning pin barrel is shown in the figure;

[0028] Figure 4 The assembly of the positioning assembly is shown in the figure;

[0029] Figure 5 The structure of the steel column is shown in the figure;

[0030] Figure 6 The structure of the connecting assembly is shown in the figure; Figure 6 (a) The structure of the connecting assembly with the L-shaped web in the un-lifted state is shown in the figure; Figure 6 (b) The structure of the connecting assembly with the L-shaped web in the lifted state is shown in the figure;

[0031] Figure 7 The structure of the U-shaped connecting piece is shown in the figure;

[0032] Figure 8 The assembly of the connecting assembly in use is shown in the figure;

[0033] In the figure, 1 is the positioning assembly; 11 is the positioning rod; 12 is the magnetic positioning pin barrel; 121 is the magnetic attraction positioning groove; 122 is the fixing hole; 13 is the cap; 2 is the steel column; 21 is the limiting through groove; 3 is the connecting assembly; 31 is the main plate; 311 is the first connecting hole; 32 is the L-shaped web; 33 is the side wing plate; 331 is the second connecting hole; 34 is the bottom plate; 35 is the magnetic limiting insertion plate; 36 is the angular rib plate; 4 is the U-shaped connecting piece; 41 is the third connecting hole; 5 is the U-shaped cold-formed thin-walled steel; 51 is the side plate of the U-shaped cold-formed thin-walled steel; 52 is the connecting plate of the U-shaped cold-formed thin-walled steel. DETAILED DESCRIPTION

[0034] The specific embodiments of the assembled cold-formed thin-walled steel connecting device and the use method thereof according to the present application are further described in combination with the drawings and examples.

[0035] As Figure 1 shown, an assembled cold-formed thin-walled steel connecting device is mainly used for installing the U-shaped cold-formed thin-walled steel 5 on the side wall of the steel column 2, which comprises a positioning assembly 1 and at least four connecting assemblies 3.

[0036] As Figures 2-4As shown, the positioning assembly 1 comprises a cap 13 and a magnetic positioning pin barrel 12, the cap 13 is fixed by a positioning rod 11 and a fixed hole 122 on the top of the magnetic positioning pin barrel 12. The positioning rod 11 of the positioning assembly 1 is inserted into the inner cavity of the steel column 2 and is buckled with the opening on the top of the steel column 2 through the cap 13, and then the four corners of the cap 13 are fixed with the top end face of the steel column 2 by using self-tapping screws.

[0037] Preferably, the four side walls of the magnetic positioning pin barrel 12 are provided with magnetic attraction positioning grooves 121; the four side walls of the steel column 2 are provided with limiting through grooves 21 corresponding to the positions of each magnetic attraction positioning groove 121 (as shown in Figure 5 As shown, the U-shaped cold-formed thin-walled steel 5 is fixed with the four side walls of the steel column 2 through the connecting assembly 3 and the U-shaped connecting piece 4.

[0038] As shown in Figure 6 (a)- Figure 6 As shown in (b), the connecting assembly 3 comprises a main plate 31, an L-shaped web plate 32, a side wing plate 33 and a bottom plate 34. Specifically, the bottom plate 34 is horizontally arranged at the bottom side of the main plate 31; the main plate 31 comprises a connecting part and a mounting part located at the right side of the connecting part along the width direction of the main plate 31; the connecting part is provided with a plurality of first connecting holes 311; the mounting part is provided with a sliding cavity (not shown in the figure) along the height direction thereof; the long wing plate of the L-shaped web plate 32 is inserted into the sliding cavity in the mounting part, which can adapt to the height installation requirements of different specifications of the U-shaped cold-formed thin-walled steel 5. The short wing plate of the L-shaped web plate 32 is parallel and on the same side with the bottom plate 34. The side wing plate 33 is vertically arranged on the side away from the connecting part between the short wing plate of the L-shaped web plate 32 and the bottom plate 34. The side wing plate 33 is provided with a plurality of second connecting holes 331 corresponding to the positions of the first connecting holes 311; the magnetic limiting plug-in plate 35 is vertically arranged on the central axis of the side surface of the main plate 31 away from the L-shaped web plate 32 along the height direction of the main plate 31.

[0039] In order to realize the position limitation between the positioning assembly 1 and the connecting assembly 3, the first strong magnetic attraction module is arranged on the inner wall of the side away from the slot of the magnetic attraction positioning groove 121; the second strong magnetic attraction module is arranged on the end face of the side away from the main plate 31 of the magnetic limiting plug-in plate 35, and the magnetism of the first strong magnetic attraction module and the second strong magnetic attraction module is opposite, that is, the opposite sex is attracted. After the connecting assembly 3 penetrates through the limiting through groove 21 of the steel column 2 through the magnetic limiting plug-in plate 35 (the end provided with the second strong magnetic attraction module faces one side of the steel column 2), it is fixed with the first strong magnetic attraction module in the magnetic attraction positioning groove 121 of the magnetic positioning pin barrel 12, thereby completing the preliminary positioning of the connecting assembly 3 and the steel column 2.

[0040] It is worth mentioning here that the short wing plate width of the L-shaped web plate 32 is the same as the bottom plate 34 width; the length of the short wing plate of the L-shaped web plate 32 and the bottom plate 34 is the same as the width of the main plate 31; the connecting part width of the main plate 31 is the same as the width of the side wing plate 33 and the side plate of the U-shaped connecting piece 4; the size of the magnetic force limiting plug-in plate 35 is matched with the size of the magnetic attraction positioning groove 121 and the limiting through groove 21; the inner cavity size of the main plate 31 sliding cavity is matched with the size of the long wing plate of the L-shaped web plate 32.

[0041] Further preferably, in order to provide an upward supporting force at the connection node, an angular rib plate 36 is vertically arranged in the middle of the bottom of the bottom plate 34, and the angular rib plate 36 is arranged in the same plane as the magnetic force limiting plug-in plate 35.

[0042] As shown in Figure 7 The left and right side plates of the U-shaped connecting piece 4 are provided with third connecting holes 41 corresponding to the first connecting holes 311 or the second connecting holes 331. It is worth emphasizing here that the positions, mutual spacings and numbers of the plurality of first connecting holes 311, the plurality of second connecting holes 331 and the plurality of third connecting holes 41 are the same, and there is a one-to-one correspondence relationship among them when connected.

[0043] In addition, in order to solve the problem that the U-shaped cold-formed thin-walled steel 5 connection position is fixed longitudinally or transversely in actual engineering, and cannot be adjusted according to the site engineering, thereby realizing the fine adjustment of engineering errors, the present application can realize the fine adjustment of the transverse installation position of the U-shaped cold-formed thin-walled steel 5 by selecting U-shaped connecting pieces 4 of different sizes; at the same time, the adjustability of the longitudinal height of the U-shaped cold-formed thin-walled steel 5 can be realized by adjusting the insertion depth of the long wing plate of the L-shaped web plate 32 in the main plate 31 sliding cavity.

[0044] The specific use (installation) method of the connecting device will be described in detail below, which specifically includes the following steps:

[0045] S1. First, connect the positioning rod 11 of the positioning assembly 1 with the magnetic positioning pin barrel 12, and then extend it into the inner cavity of the steel column 2, then buckle the cap 13 with the top opening of the steel column 2, and fix the four corners of the cap 13 with the top end face of the steel column 2 through self-tapping screws, at this time, each magnetic attraction positioning groove 121 of the magnetic positioning pin barrel 12 is one-to-one corresponding to the limiting through groove 21 of the side wall of the steel column 2, which provides the previous condition for magnetic attraction positioning;

[0046] S2. Take four U-shaped cold-formed thin-walled steels 5 and four connecting assemblies 3 for standby;

[0047] S3. Four connecting assemblies 3 are arranged with one end of the angle-shaped rib plate 36 downward, and the four magnetic limiting plug-in plates 35 are all directed to one side of the steel column 2, then the end faces of the four magnetic limiting plug-in plates 35 provided with the second strong magnetic suction module are respectively inserted into the limiting through grooves 21 of the four side walls of the steel column 2, until the first strong magnetic suction module in the corresponding position of the limiting through grooves 21 of the four side walls is fixed and positioned by magnetic suction, that is, the preliminary limiting of the connecting assembly 3 is completed, as shown in Figure 8

[0048] S4. Based on the preliminary limiting of S3, the connecting part of the main plate 31 of the connecting assembly 3 coincides with the side wing plate 33 of the adjacent connecting assembly 3, and the first connecting hole 311 of the connecting part corresponds to the second connecting hole 331 of the side wing plate 33 one by one; at the same time, the straight angle edge of the angle-shaped rib plate 36 perpendicular to the bottom plate 34 is completely attached to the side wall of the steel column 2, thereby providing an upward supporting force for the connecting assembly 3;

[0049] S5. One of the U-shaped cold-formed thin-walled steel bars 5 is placed in the middle position between the L-shaped web plate 32 short wing plate and the bottom plate 34 of one of the connecting assemblies 3, and the insertion depth of the long wing plate of the L-shaped web plate 32 in the installation part of the main plate 31 is adjusted to adapt to the height of the U-shaped cold-formed thin-walled steel bar 5 of different specifications. At the same time, the side plates 51 of the two U-shaped cold-formed thin-walled steel bars are fixed by self-tapping screws through the short wing plate and the bottom plate 34 of the L-shaped web plate 32; the connecting plate 52 of the U-shaped cold-formed thin-walled steel bar is bolted with one of the side plates of the U-shaped connecting piece 4, the other side plate of the U-shaped connecting piece 4 is attached to the side wing plate 33 and is fixed by bolts in sequence through the third connecting hole 41 of the U-shaped connecting piece 4, the second connecting hole 331 of the side wing plate 33 and the first connecting hole 311 of the connecting part of the adjacent connecting assembly 3, that is, the fixing of the U-shaped cold-formed thin-walled steel bar 5 and one of the side walls of the steel column 2 is completed.

[0050] S6. Repeat S5 to sequentially complete the connection and fixing between the remaining three U-shaped cold-formed thin-walled steel bars 5 and the remaining three side walls of the steel column 2.

[0051] Similarly, the connection between the other end of each U-shaped cold-formed thin-walled steel bar 5 and the side wall of the other steel column 2 is also assembled in the above-mentioned manner, and will not be described in detail here.

[0052] The present application adopts a fabricated connection mode, which is convenient to disassemble and assemble, can be applied to a wide size range, and is especially suitable for the variability of the installation position of the U-shaped cold-formed thin-walled steel bar, the longitudinal and transverse positions can be adjusted according to the actual engineering, effectively improves the stability and safety of the overall structure, and also can realize the fine adjustment of the engineering error.

[0053] ​In the present application, the terms such as "upper", "lower", "bottom", "top" and the like indicate the orientation or positional relationship shown in the drawings, which are only the relationship words determined for the convenience of describing the structural relationship of the components or elements of the present application, and are not intended to specify any component or element in the present application, and cannot be understood as a limitation on the present application. The terms such as "connected", "connected" and the like should be understood broadly, which means that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant researchers or technicians in the field, the specific meaning of the above terms in the present application can be determined according to the specific circumstances, and cannot be understood as a limitation on the present application.

[0054] Of course, the above description is not a limitation on the present application, and the present application is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present application should also be within the scope of the present application.

Claims

1. A fabricated cold-formed thin-walled steel connecting device for mounting a U-shaped cold-formed thin-walled steel on a steel column, characterized in that, The positioning assembly and the connecting assembly are included. The positioning assembly includes a cap and a magnetic positioning pin barrel, and the cap is connected with the magnetic positioning pin barrel through a positioning rod. The four side walls of the magnetic positioning pin barrel are provided with magnetic attraction positioning grooves. The connecting assembly is fixed with the magnetic attraction positioning grooves of the magnetic positioning pin barrel through the magnetic limiting insert plates after penetrating the limiting through grooves. The U-shaped cold-formed thin-walled steel is fixed with the side wall of the steel column through the connecting assembly and the U-shaped connecting piece.

2. The fabricated cold-formed thin-walled steel connection of claim 1, wherein The connecting assembly includes a main plate, an L-shaped web, a side wing plate and a bottom plate. The bottom plate is horizontally arranged at the bottom side of the main plate. The main plate includes a connecting part and a mounting part arranged at the right side of the connecting part along the width direction of the main plate. The L-shaped web is inserted into the slide cavity along the height direction of the mounting part. The short wing plate of the L-shaped web is parallel to the bottom plate.

3. The fabricated cold-formed thin-walled steel connection of claim 2, wherein The side wing plate is vertically arranged on the side away from the connecting part between the short wing plate of the L-shaped web and the bottom plate. The side wing plate is provided with a plurality of second connecting holes at the position with the same height as the plurality of first connecting holes.

4. The fabricated cold-formed thin-walled steel connection of claim 1, wherein The magnetic limiting insert plate is vertically arranged on the central axis of the side surface of the main plate away from the L-shaped web along the height direction of the main plate.

5. The fabricated cold-formed thin-walled steel connection of claim 3, wherein The inner wall of the side of the magnetic attraction positioning groove away from the slot is provided with a first strong magnetic attraction module. The end surface of the side of the magnetic limiting insert plate away from the main plate is provided with a second strong magnetic attraction module. The magnetic properties of the first strong magnetic attraction module and the second strong magnetic attraction module are opposite. The fixing hole at the top of the positioning rod and the magnetic positioning pin barrel is threadedly connected.

6. The fabricated cold-formed thin-walled steel connection of claim 3, wherein The width of the short wing plate of the L-shaped web is the same as the width of the bottom plate.

7. The fabricated cold-formed thin-walled steel connection of claim 6, wherein The width of the connecting part is the same as the width of the side wing plate and the side plate of the U-shaped connecting piece.

8. A method of using a fabricated cold-formed thin-walled steel connecting device, using the connecting device of any one of claims 6 to 7, characterized in that, The size of the magnetic limiting insert plate is adapted to the size of the magnetic attraction positioning groove and the limiting through groove. The size of the inner cavity of the slide cavity is adapted to the size of the long wing plate of the L-shaped web. The bottom of the bottom plate is vertically provided with an angular rib plate. The left and right side plates of the U-shaped connecting piece are provided with third connecting holes corresponding to the first connecting holes or the second connecting holes. The steps include the following steps: S1. The positioning rod and the magnetic positioning pin barrel of the positioning assembly are connected and inserted into the inner cavity of the steel column, the cap is buckled with the opening at the top of the steel column, and the four corners of the cap are fixed with the steel column through self-tapping screws, at this time, each magnetic attraction positioning groove of the magnetic positioning pin barrel corresponds to the limiting through groove of the side wall of the steel column one by one. S2. Four U-shaped cold-formed thin-walled steels and four connecting assemblies are prepared. S3. The end of the connecting assembly provided with the angular rib plate is downward, four magnetic limiting insert plates are inserted into the limiting through grooves of the four side walls of the steel column, until the second strong magnetic attraction module of the magnetic limiting insert plate is magnetically attracted and fixed with the first strong magnetic attraction module of the corresponding position magnetic attraction positioning groove, and the limiting of the connecting assembly is completed. S4. After the limit is completed, the connecting part of the main board of the connecting component coincides with the side wing plate of the adjacent connecting component, and the first connecting holes of the connecting part correspond one-to-one with the second connecting holes of the side wing plate; the right-angled side of the angular rib plate perpendicular to the bottom plate is completely attached to the side wall of the steel column. S5. Take a U-shaped cold-formed thin-walled steel section and place it in the center between the short wing plate and the bottom plate of the L-shaped web of one of the connecting components. Adjust the insertion depth of the long wing plate of the corresponding L-shaped web in the sliding cavity of the main plate to adapt to the height of the U-shaped cold-formed thin-walled steel section. The two side plates of the U-shaped cold-formed thin-walled steel section are fixed to the short wing plate and the bottom plate of the L-shaped web respectively with self-tapping screws. The connecting plate of the U-shaped cold-formed thin-walled steel section is bolted to one of the side plates of the U-shaped connector. The other side plate of the U-shaped connector is attached to the side wing plate and fixed to the first connecting hole of the adjacent connecting component after passing through the third connecting hole of the U-shaped connector and the second connecting hole of the side wing plate with bolts. This completes the fixing of the U-shaped cold-formed thin-walled steel section to one of the side walls of the steel column. S6. Repeat S5 to complete the connection and fixation between the remaining three U-shaped cold-formed thin-walled steel sections and the remaining three side walls of the steel column.

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