Prefabricated steel structure box-type steel columns and construction methods

Abstract

This invention relates to the field of building equipment technology, specifically to prefabricated steel structure box-type steel columns and their construction method. The components include: steel columns, external fixing components, and internal fixing components. The external fixing components include an external positive fixing mechanism mounted on the foundation steel column and connected to the additional steel column, an external negative fixing mechanism mounted on the additional steel column and connected to the foundation steel column, and alignment mechanisms mounted on both the external positive and external negative fixing mechanisms. The internal fixing components include an internal connecting mechanism and an internal secondary connecting mechanism mounted on the internal connecting mechanism. Through the external positive and external negative fixing mechanisms working in conjunction with the alignment mechanisms, the foundation steel column and the additional steel column are synchronously aligned during fixing, resulting in more precise and convenient alignment. The external fixing components position the internal fixing components, achieving internal and external fixing and improving structural stability.

Description

Technical Field

[0001] This invention relates to the field of building equipment technology, specifically to prefabricated building steel structure box-type steel columns and construction methods. Background Technology

[0002] A box column is a steel component consisting of four welded steel plates forming a closed box-shaped cross-section. It is mainly used as a beam or column in steel structures.

[0003] CN115233904A discloses a prefabricated building steel structure box-type steel column, including a bottom main body, a middle connecting main body at the top of the bottom main body, and a top main body at the top of the middle connecting main body. The bottom main body, the middle connecting main body, and the top main body are interconnected by plug-in joints. A support structure is plugged into the interior of the top connecting main body. This invention simplifies the overall handling of the main body by dividing it into three parts: the bottom main body, the middle connecting main body, and the top main body, which are interconnected. This allows for the transport of more main structures under the same conditions, greatly speeding up the handling of the main structure and saving a lot of manpower. The support structure plugged into the top of the top main body is semi-circular, which increases the strength when connecting to the steel beams. It is also installed by multiple fixed columns, which facilitates installation.

[0004] However, when assembling the prefabricated steel structure box column mentioned above, it is necessary to hoist the middle connecting body onto the bottom body and align the flanges on the middle connecting body and the flanges on the bottom body. However, due to the large size and weight of the middle connecting body, it is inconvenient to align the two. Summary of the Invention

[0005] The purpose of this invention is to provide prefabricated steel structure box-type steel columns and construction methods for buildings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] On the one hand, prefabricated building steel structure box-type steel columns include:

[0008] The steel column includes a base steel column and an additional steel column installed on the base steel column, wherein a guide rail is provided in the inner wall of the additional steel column;

[0009] An external fixing assembly includes an external positive fixing mechanism disposed on the base steel column and connected to the added steel column, an external negative fixing mechanism disposed on the added steel column and connected to the base steel column, and an alignment mechanism disposed on both the external positive fixing mechanism and the external negative fixing mechanism;

[0010] An internal fixing assembly includes an internal connecting mechanism and an inner secondary connecting mechanism disposed on the internal connecting mechanism. The planes on which the outer positive fixing mechanism and the outer negative fixing mechanism are fixed are perpendicular to each other. The planes on which the internal connecting mechanism and the inner secondary connecting mechanism are fixed are perpendicular to each other. The alignment mechanism is used to align the fitted base steel column and the added steel column after the outer positive fixing mechanism and the outer negative fixing mechanism are installed. The internal connecting mechanism slides into the added steel column along the guide rail until the internal connecting mechanism contacts the outer positive fixing mechanism, so that the internal connecting mechanism and the inner secondary connecting mechanism are aligned with and connected to the internal holes on the base steel column and the added steel column, respectively.

[0011] Preferably, the base steel column and the additional steel column are provided with flanges at both ends, and the flanges are provided with connecting holes. The flanges of the base steel column and the additional steel column are provided with slots and external mounting holes.

[0012] Preferably, both the external positive fixing mechanism and the external negative fixing mechanism include plugs and connectors.

[0013] Preferably, the plug-in includes a connecting rod disposed in the slot, a first plate disposed on the connecting rod, a first C-shaped rod disposed on the first plate, a second plate disposed on the other end of the first C-shaped rod, and an inner mounting hole opened on the connecting rod. The connecting rod corresponding to the external positive fixing mechanism is inserted into the slot on the foundation steel column, and the connecting rod corresponding to the external negative fixing mechanism is inserted into the slot on the added steel column.

[0014] Preferably, the connector includes a C-shaped rod 2, a third and a fourth plate disposed on the C-shaped rod 2, a mounting groove formed on the C-shaped rod 2 and the third plate, and an external mounting hole formed on the side wall of the mounting groove. The first, second, third and fourth plates are all provided with external connecting holes.

[0015] Preferably, the alignment mechanism includes threaded rods respectively inserted on the C-shaped rod II, a slide rail disposed on the C-shaped rod II, a slider disposed in the slide rail, and an alignment plate disposed on the slider.

[0016] Preferably, after the added steel column and the base steel column are fitted together and the connecting rod is inserted into the slot of the base steel column, the external connecting hole on the first mounting plate is aligned with the external mounting hole on the base steel column and fasteners are inserted for fixation. The second C-shaped rod is sleeved on the connecting rod through the mounting groove. The external mounting hole and the internal mounting hole are aligned and fasteners are inserted. The second C-shaped rod and the connecting rod are connected. The external connecting hole on the fourth mounting plate is aligned with the external mounting hole on the added steel column and fasteners are inserted for fixation. The threaded rod is rotated to move the alignment plate along the slide rail, fitting the flanges of the added steel column and the base steel column. The external connecting hole on the second mounting plate is aligned with the external mounting hole on the added steel column and fasteners are inserted for fixation. The external connecting hole on the third mounting plate is aligned with the external mounting hole on the base steel column and fasteners are inserted for fixation. The connecting holes on the flanges of the base steel column and the added steel column are aligned and fasteners are inserted for fixation.

[0017] Preferably, the internal connecting mechanism includes a base rod, a limiting groove formed on the base rod, arc-shaped support rods at both ends of the base rod, a first mounting plate formed on both ends of the arc-shaped support rod, a sliding groove and an inner connecting hole formed on the first mounting plate, and the internal secondary connecting mechanism includes a secondary arc support rod formed on the arc support rod, a second mounting plate formed on the secondary arc support rod, and a secondary inner hole formed on the second mounting plate.

[0018] Preferably, the slide groove is aligned with the guide rail and slides into the added steel column along the guide rail until the limiting groove contacts the connecting rod. The inner holes on the two mounting plates of the same arc-shaped support rod are respectively aligned with the inner holes on the base steel column and the added steel column and fasteners are inserted for fixation. The secondary inner holes on the two mounting plates of the same secondary arc-shaped support rod are respectively aligned with the inner holes on the base steel column and the added steel column and fasteners are inserted for fixation.

[0019] On the other hand, a construction method for prefabricated building steel structure box-type steel columns based on any one of the above-mentioned methods is also provided, including:

[0020] S1: Install the foundation steel column on the mounting platform by inserting fasteners into the connecting holes of the flange at the bottom of the foundation steel column;

[0021] S2: Hoist the added steel column to the base steel column and align it initially. After the added steel column and the base steel column are attached and the connecting rod is inserted into the slot of the base steel column, align the external connecting hole on the first plate with the external mounting hole on the base steel column and insert fasteners to fix it.

[0022] S3: The C-shaped rod 2 is sleeved on the connecting rod through the mounting groove. The mounting outer hole and the mounting inner hole are aligned and fasteners are inserted to connect the C-shaped rod 2 and the connecting rod, so that the outer connecting hole on the patch plate 4 is aligned with the outer mounting hole on the added steel column and fasteners are inserted to fix it.

[0023] S4: Rotate the threaded rod to move the alignment plate along the slide rail, fitting the flanges of the added steel column and the base steel column. Then tighten the fasteners in the mounting holes to align the external connecting holes on the second plate with the external mounting holes on the added steel column and insert fasteners for fixation. Align the external connecting holes on the third plate with the external mounting holes on the base steel column and insert fasteners for fixation. Align the connecting holes on the flanges of the base steel column and the added steel column with fasteners for fixation.

[0024] S5: The slide groove is aligned with the guide rail and slides into the added steel column along the guide rail until the limiting groove contacts the connecting rod. The inner holes on the two mounting plates of the same arc-shaped support rod are respectively aligned with the inner holes on the base steel column and the added steel column and fasteners are inserted for fixation. The secondary inner holes on the two mounting plates of the same secondary arc support rod are respectively aligned with the inner holes on the base steel column and the added steel column and fasteners are inserted for fixation.

[0025] S6: Repeat S2-S5 until all the steel columns have been installed.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This invention achieves synchronous alignment of the base steel column and the added steel column during fixing by using an external positive fixing mechanism and an external negative fixing mechanism in conjunction with an alignment mechanism. The alignment is more accurate and convenient. Through the setting of external fixing components and internal fixing components, the external fixing components position the internal fixing components, realizing internal and external fixing and improving the stability of the structure. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a top view of the structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the present invention with added steel columns;

[0031] Figure 4 This is a schematic diagram of the external positive fixing mechanism and the external negative fixing mechanism of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the plug and connector of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the plug-in of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the connector of the present invention;

[0035] Figure 8 This is a structural schematic diagram of the plug-in of the present invention from another perspective;

[0036] Figure 9 This is a structural schematic diagram of the connector of the present invention from another perspective;

[0037] Figure 10 This is a schematic diagram of the internal fixing component of the present invention;

[0038] Figure 11 This is a schematic diagram of the alignment mechanism of the present invention.

[0039] In the diagram: 1. Foundation steel column; 2. Additional steel column; 3. Guide rail; 4. Internal hole; 5. Flange; 6. Connecting hole; 7. Slot; 8. External hole; 9. Connecting rod; 10. Plate 1; 11. Secondary internal hole; 12. C-shaped rod 1; 13. Plate 2; 14. Mounting internal hole; 15. C-shaped rod 2; 16. Plate 3; 17. Plate 4; 18. Mounting groove; 19. Mounting external hole; 20. External connecting hole; 21. Threaded rod; 22. Slide rail; 23. Slider; 24. Alignment plate; 25. Base rod; 26. Limiting groove; 27. Arc-shaped support rod; 28. Mounting plate 1; 29. ​​Slide groove; 30. Internal connecting hole; 31. Secondary arc support rod; 32. Mounting plate 2. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1 to 11 The present invention provides a technical solution:

[0042] Prefabricated building steel structure box-type steel columns, including:

[0043] The steel column includes a base steel column 1 and an auxiliary steel column 2 mounted on the base steel column 1. The base steel column 1 is mounted on an installation platform, which can be the ground or similar. The inner wall of the auxiliary steel column 2 is provided with a guide rail 3, which is fixedly connected to the base steel column 1 by means of integral molding or other methods. Both ends of the base steel column 1 and the auxiliary steel column 2 are provided with flanges 5, which are fixedly connected to both ends of the base steel column 1 and the auxiliary steel column 2 by means of integral molding or other methods. Connection holes 6 are provided on the flanges 5. Slots 7 and external mounting holes 8 are provided at the flanges 5 of the base steel column 1 and the auxiliary steel column 2. Slots 7 are provided on two symmetrical side walls of the base steel column 1 and the auxiliary steel column 2. External mounting holes 8 are provided on all four side walls of the base steel column 1 and the auxiliary steel column 2. Internal mounting holes 4 are also provided on the base steel column 1 and the auxiliary steel column 2.

[0044] The external fixing assembly includes an external positive fixing mechanism mounted on the foundation steel column 1 and connected to the additional steel column 2, an external negative fixing mechanism mounted on the additional steel column 2 and connected to the foundation steel column 1, and an alignment mechanism provided on both the external positive and external negative fixing mechanisms. The fixing planes of the external positive and external negative fixing mechanisms are perpendicular to each other. The external positive and external negative fixing mechanisms have the same structure but opposite installation directions. Both the external positive and external negative fixing mechanisms include inserts and connectors. The inserts include a connecting rod 9, a first mounting plate 10, a first C-shaped rod 12, a second mounting plate 13, and an inner mounting hole 14. The connecting rod 9 is located in the insert... In slot 7, plate 10 is mounted on connecting rod 9 and is fixedly connected to connecting rod 9 by welding or integral molding. C-shaped rod 12 is mounted on plate 10 and is fixedly connected to plate 10 by welding or integral molding. Plate 2 13 is mounted on the other end of C-shaped rod 12 and is fixedly connected to C-shaped rod 12 by welding or integral molding. Inner hole 14 is opened on connecting rod 9. Connecting rod 9 corresponding to external positive fixing mechanism is inserted into slot 7 on foundation steel column 1. Connecting rod 9 corresponding to external negative fixing mechanism is inserted into slot 7 on added steel column 2.

[0045] The connector includes a C-shaped rod 15, a third plate 16, a fourth plate 17, a mounting groove 18, and a mounting external hole 19. The third plate 16 and the fourth plate 17 are respectively disposed on both ends of the C-shaped rod 15. The third plate 16 and the fourth plate 17 are fixedly connected to both ends of the C-shaped rod 15 by welding or integral molding. The mounting groove 18 is formed on the C-shaped rod 15 and the third plate 16. The mounting external hole 19 is formed on the side wall of the mounting groove 18. The first plate 10, the second plate 13, the third plate 16, and the fourth plate 17 are all provided with external connecting holes 20.

[0046] The alignment mechanism includes a threaded rod 21, a slide rail 22, a slider 23, and an alignment plate 24. The threaded rod 21 is inserted into a threaded hole on the C-shaped rod 15. The slide rail 22 is set on the C-shaped rod 15, and the slider 23 is set in the slide rail 22 and is movably connected to the slide rail 22. The alignment plate 24 is set on the slider 23 and is fixedly connected to the slider 23 by welding or integral molding. The C-shaped rod 12 can also be equipped with an alignment mechanism. After the steel column 2 and the base steel column 1 are attached and the connecting rod 9 is inserted into the slot 7 of the base steel column 1, the external connecting hole 20 on the attachment plate 10 and the external mounting hole 8 on the base steel column 1 are aligned and fasteners are inserted for fixation. Rod 2 15 is fitted onto connecting rod 9 through mounting groove 18. The mounting outer hole 19 and mounting inner hole 14 are aligned and fasteners are inserted. The C-shaped rod 2 15 and connecting rod 9 are connected. The outer connecting hole 20 on the mounting plate 4 17 is aligned with the outer mounting hole 8 on the added steel column 2 and fasteners are inserted for fixation. The threaded rod 21 is rotated to move the alignment plate 24 along the slide 22, fitting the flange 5 of the added steel column 2 and the base steel column 1. The outer connecting hole 20 on the mounting plate 2 13 is aligned with the outer mounting hole 8 on the added steel column 2 and fasteners are inserted for fixation. The outer connecting hole 20 on the mounting plate 3 16 is aligned with the outer mounting hole 8 on the base steel column 1 and fasteners are inserted for fixation. The connecting hole 6 on the flange 5 of the base steel column 1 and the added steel column 2 is aligned and fasteners are inserted for fixation.

[0047] The internal fixing assembly includes an internal connecting mechanism and an internal secondary connecting mechanism disposed on the internal connecting mechanism. The internal connecting mechanism includes a base rod 25, a limiting groove 26, an arc-shaped support rod 27, a mounting plate 28 with a sliding groove 29, and an internal connection hole 30. The limiting groove 26 is formed on the base rod 25. The arc-shaped support rod 27 is disposed at both ends of the base rod 25 and is fixedly connected to both ends of the base rod 25 by welding or other means. The mounting plate 28 is disposed at both ends of the arc-shaped support rod 27 and is fixedly connected to both ends of the arc-shaped support rod 27 by welding or other means. The sliding groove 29 and the internal connection hole 30 are formed on the mounting plate 28. The internal secondary connecting mechanism includes a secondary arc-shaped support rod 31, a mounting plate 32, and a secondary internal hole 11. The secondary arc-shaped support rod 31 is disposed on the arc-shaped support rod 25. On rod 27, secondary arc support rod 31 is fixedly connected to arc support rod 27 by welding or other means. Mounting plate 22 is set on secondary arc support rod 31 and is fixedly connected to both ends of secondary arc support rod 31 by welding or other means. Secondary inner hole 11 is opened on mounting plate 22. Slide groove 29 is aligned with guide rail 3 and slides into the added steel column 2 along guide rail 3 until the limiting groove 26 contacts the connecting rod 9. The inner holes 30 on the two mounting plates 28 on the same arc support rod 27 are respectively aligned with the inner holes 4 on the foundation steel column 1 and the added steel column 2 and fasteners are inserted for fixation. The secondary inner holes 11 on the two mounting plates 32 on the same secondary arc support rod 31 are respectively aligned with the inner holes 4 on the foundation steel column 1 and the added steel column 2 and fasteners are inserted for fixation. Bolts can be used as fasteners.

[0048] Construction method: Fasteners are inserted into the connecting holes 6 of the flange 5 at the bottom of the foundation steel column 1 to install the foundation steel column 1 on the installation platform. The additional steel column 2 is hoisted to the foundation steel column 1 and initially aligned. After the additional steel column 2 and the foundation steel column 1 are fitted together, and the connecting rod 9 is inserted into the slot 7 of the foundation steel column 1, the external connecting hole 20 on the first mounting plate 10 is aligned with the external mounting hole 8 on the foundation steel column 1, and fasteners are inserted for fixation. The second C-shaped rod 15 is fitted onto the connecting rod 9 through the mounting groove 18. The external mounting hole 19 and the internal mounting hole 14 are aligned and fasteners are inserted. The second C-shaped rod 15 and the connecting rod 9 are connected, and the external connecting hole 20 on the fourth mounting plate 17 is aligned with the external mounting hole 8 on the additional steel column 2, and fasteners are inserted for fixation. The threaded rod 21 is rotated to move the alignment plate 24 along the slide 22, fitting the additional steel column 2 and the foundation steel column 1 together. The flange 5 of column 1 is rotated in the opposite direction by the threaded rod 21. Then, the external connecting hole 20 on the second plate 13 is aligned with the external mounting hole 8 on the added steel column 2 and fasteners are inserted to fix it. The external connecting hole 20 on the third plate 16 is aligned with the external mounting hole 8 on the base steel column 1 and fasteners are inserted to fix it. The connecting hole 6 on the flange 5 of the base steel column 1 and the added steel column 2 is aligned with the fasteners to fix it. The slide groove 29 is aligned with the guide rail 3 and slides into the added steel column 2 along the guide rail 3 until the limiting groove 26 contacts the connecting rod 9. The internal connecting holes 30 on the two mounting plates 28 on the same arc-shaped support rod 27 are aligned with the internal mounting holes 4 on the base steel column 1 and the added steel column 2 respectively and fasteners are inserted to fix it. The secondary internal holes 11 on the two mounting plates 32 on the same secondary arc support rod 31 are aligned with the internal holes 4 on the base steel column 1 and the added steel column 2 respectively and fasteners are inserted to fix it.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fabricated steel structure box type steel column of a building, characterized in that, The utility model relates to a steel column fixing device, including: a steel column, which comprises a base steel column and an additional steel column arranged on the base steel column, and a guide rail is arranged in the inner wall of the additional steel column; an external fixing assembly, which comprises an external positive fixing mechanism arranged on the base steel column and connected with the additional steel column, an external negative fixing mechanism arranged on the additional steel column and connected with the base steel column, and an alignment mechanism arranged on the external positive fixing mechanism and the external negative fixing mechanism; an internal fixing assembly, which comprises an internal connecting mechanism and an internal secondary connecting mechanism arranged on the internal connecting mechanism, the fixed planes of the external positive fixing mechanism and the external negative fixing mechanism are perpendicular to each other, the fixed planes of the internal connecting mechanism and the internal secondary connecting mechanism are perpendicular to each other, the alignment mechanism is used for aligning the base steel column and the additional steel column after the external positive fixing mechanism and the external negative fixing mechanism are installed, the internal connecting mechanism slides into the additional steel column along the guide rail, and when the internal connecting mechanism contacts the external positive fixing mechanism, the internal connecting mechanism and the internal secondary connecting mechanism are aligned with and connected to the internal holes on the base steel column and the additional steel column respectively; flanges are arranged at the two ends of the base steel column and the additional steel column, connecting holes are formed in the flanges, and the flanges of the base steel column and the additional steel column are provided with insertion grooves and external holes; the external positive fixing mechanism and the external negative fixing mechanism each comprise an insert and a connecting piece; the insert comprises a connecting rod arranged in the insertion groove, a first sticking plate arranged on the connecting rod, a C-shaped rod I arranged on the first sticking plate, a second sticking plate arranged on the other end of the C-shaped rod I, and an installation inner hole formed in the connecting rod, the connecting rod of the external positive fixing mechanism is inserted into the insertion groove on the base steel column, and the connecting rod of the external negative fixing mechanism is inserted into the insertion groove on the additional steel column; the connecting piece comprises a C-shaped rod II, a third sticking plate and a fourth sticking plate arranged on the C-shaped rod II, an installation slot formed in the C-shaped rod II and the third sticking plate, and an installation outer hole formed in the side wall of the installation slot, and external connecting holes are formed in the first sticking plate, the second sticking plate, the third sticking plate and the fourth sticking plate; the alignment mechanism comprises threaded rods respectively inserted into the C-shaped rod II, a slide arranged on the C-shaped rod II, a sliding block arranged in the slide, and an alignment plate arranged on the sliding block; the internal connecting mechanism comprises a base rod, a limiting slot formed in the base rod, arc-shaped supporting rods arranged at the two ends of the base rod, installation plates I arranged at the two ends of the arc-shaped supporting rods, a sliding slot and an internal connecting hole formed in the installation plates I, and the internal secondary connecting mechanism comprises secondary arc-shaped supporting rods arranged on the arc-shaped supporting rods, installation plates II arranged on the secondary arc-shaped supporting rods, and secondary internal holes formed in the installation plates II.

2. The fabricated steel building structure box type steel column according to claim 1, characterized in that: After the added steel column and the foundation steel column are attached and the connecting rod is inserted into the insertion slot of the foundation steel column, the outer connecting hole on the attaching plate one and the outer attaching hole on the foundation steel column are aligned and fastened by inserting a fastener, the C-shaped rod two is sleeved on the connecting rod through the mounting slot, the mounting outer hole and the mounting inner hole are aligned and fastened by inserting a fastener, the C-shaped rod two and the connecting rod are connected, the outer connecting hole on the attaching plate four and the outer attaching hole on the added steel column are aligned and fastened by inserting a fastener, the alignment plate is moved along the slide rail by rotating the threaded rod, the flanges of the added steel column and the foundation steel column are attached, the outer connecting hole on the attaching plate two and the outer attaching hole on the added steel column are aligned and fastened by inserting a fastener, and the outer connecting hole on the attaching plate three and the outer attaching hole on the foundation steel column are aligned and fastened by inserting a fastener, and the connecting holes on the flanges of the foundation steel column and the added steel column are aligned and fastened by inserting a fastener.

3. The prefabricated building steel structure box type steel column according to claim 2, characterized in that: The slide groove aligns the guide rail and slides into the added steel column along the guide rail until the limiting slot contacts the connecting rod, and the inner connecting holes on the two mounting plates one on the same arc-shaped supporting rod are respectively aligned with the inner attaching holes on the foundation steel column and the added steel column and are fastened by inserting fasteners, and the auxiliary inner holes on the two mounting plates two on the same auxiliary arc-shaped supporting rod are respectively aligned with the inner attaching holes on the foundation steel column and the added steel column and are fastened by inserting fasteners.

4. A construction method of a fabricated building steel structure box-type steel column based on any one of the above claims 1-3, comprising: S1: installing the foundation steel column on an installation platform by inserting a fastener into the connecting hole of the flange inserted at the bottom of the foundation steel column; S2: hoisting the added steel column to the foundation steel column and initially aligning, and after the added steel column and the foundation steel column are attached and the connecting rod is inserted into the insertion slot of the foundation steel column, aligning the outer connecting hole on the attaching plate one and the outer attaching hole on the foundation steel column and fastening by inserting a fastener; S3: sleeving the C-shaped rod two on the connecting rod through the mounting slot, aligning the mounting outer hole and the mounting inner hole and fastening by inserting a fastener, connecting the C-shaped rod two and the connecting rod, aligning the outer connecting hole on the attaching plate four and the outer attaching hole on the added steel column and fastening by inserting a fastener; S4: moving the alignment plate along the slide rail by rotating the threaded rod, attaching the flanges of the added steel column and the foundation steel column, then tightening the fastener in the mounting outer hole, aligning the outer connecting hole on the attaching plate two and the outer attaching hole on the added steel column and fastening by inserting a fastener, aligning the outer connecting hole on the attaching plate three and the outer attaching hole on the foundation steel column and fastening by inserting a fastener, and aligning the connecting holes on the flanges of the foundation steel column and the added steel column and fastening by inserting a fastener; S5: The chute aligns the guide rail and slides into the steel column along the guide rail until the limiting groove contacts the connecting rod, and the inner holes on the two installation plates on the same arc-shaped support rod are respectively aligned with the inner holes on the foundation steel column and the steel column to be added and are inserted into fasteners for fixation, and the secondary inner holes on the two installation plates on the same secondary arc-shaped support rod are respectively aligned with the inner holes on the foundation steel column and the steel column to be added and are inserted into fasteners for fixation; S6: Repeat S2-S5 until the steel columns to be added are all installed.

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