BIM (Building Information Modeling)-based special-shaped steel column splitting processing and mounting construction method

Abstract

The invention belongs to the technical field of steel structure construction, and particularly relates to a BIM-based special-shaped steel column splitting machining and mounting construction method. The special-shaped steel column specifically comprises a first outer arc-shaped panel, a second outer arc-shaped panel, an arc-like plate, a lateral surrounding plate, a base layer section vertical reinforcing plate, a standard section vertical reinforcing plate, a top layer section vertical reinforcing plate, shear-resistant studs, long-strip-shaped holes, a base plate and stiffening ribs. According to the method, the high-precision special-shaped steel column BIM model is created, digital splitting is carried out, the component machining drawing capable of being directly used by a factory is generated, and the machining precision is improved. The special-shaped steel column is formed by assembling and welding a base layer section assembly, a standard section assembly and a top layer section assembly. By adopting a sectional machining method, the special-shaped steel columns with different heights can be manufactured by increasing or decreasing the number of the middle standard section assemblies, so that diversified design requirements are met.

Description

Technical Field

[0001] This invention belongs to the field of steel structure construction technology, and in particular relates to a BIM-based method for disassembling, processing and installing irregularly shaped steel columns. Background Technology

[0002] In the field of modern architecture, irregularly shaped steel columns are widely used because they can meet diverse architectural design needs. However, traditional processing and construction methods for irregularly shaped steel columns, especially those with complex spatial curved surfaces and irregular cross-sections, have significant limitations.

[0003] The irregular shape of irregular steel columns presents challenges for welding. Furthermore, traditional two-dimensional drawings struggle to fully and accurately represent the three-dimensional geometry of these columns, leading to misunderstandings between design intent and factory fabrication / on-site installation. This information gap frequently results in inaccurate dimensions during fabrication and difficulties in positioning during installation, often necessitating on-site modifications or remedial work. This not only increases construction costs and time but also poses potential structural defects.

[0004] This invention provides a BIM-based method for the disassembly, processing, and installation of irregularly shaped steel columns, aiming to ensure the accuracy and quality of the entire process from processing to installation. This method creates a high-precision BIM model of the irregularly shaped steel column, performs reasonable digital disassembly, and generates component processing drawings that can be directly used in the factory, improving processing accuracy and reducing the difficulty of the processing, thus achieving the goal of efficient, high-precision, and high-quality construction of irregularly shaped steel columns. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a BIM-based method for the disassembly, processing, and installation of irregularly shaped steel columns. The adopted technical solution is as follows:

[0006] The irregular steel column specifically includes a first outer arc-shaped panel, a second outer arc-shaped panel, an arc-like plate, a side panel, a vertical reinforcing plate for the base section, a vertical reinforcing plate for the standard section, a vertical reinforcing plate for the top section, shear studs, elongated holes, a base plate, and stiffening ribs.

[0007] A BIM-based method for disassembling, processing, and installing irregularly shaped steel columns includes the following steps:

[0008] Step 1. Create a 3D BIM model of the irregular steel column based on the design drawings;

[0009] Step 2. Decompose the 3D BIM model of the irregular steel column into: base section BIM model, standard section BIM model and top section BIM model;

[0010] Step 3. The base section BIM model, standard section BIM model and top section BIM model are further disassembled to obtain the steel plate components that form their basic constituent units; then, the dimensions of the steel plate components are calibrated in the BIM model.

[0011] Step 4. For the second outer arc panel area where welding is not possible, a process of reserving elongated holes and connecting them with plug welding is adopted; the position of the elongated holes on the second outer arc panel is accurately located in the BIM model; at the same time, according to the design drawings, the position of the anchor bolt holes of the base plate is accurately marked in the BIM model.

[0012] Step 5. Input the BIM model containing the three-dimensional geometric data of the steel plate into the Robotsmart welding software to drive the welding robot to perform laser cutting on the steel plate;

[0013] Step 6. Weld shear studs on the inner sides of the first outer arc panel and the second outer arc panel, as well as on both sides of the vertical reinforcing plates of the base section, the standard section, and the top section.

[0014] Step 7. Assemble and weld the processed steel plate components in sequence, and assemble and weld the base section components, standard section components and top section components of the irregular steel column in sequence; grind the weld seams of the irregular steel column and spray anti-corrosion paint on the outside;

[0015] Step 8. Hoist the welded irregular steel column to the reserved anchor bolt position on the foundation base. Adjust the position of the irregular steel column so that the anchor bolt holes on its base plate are aligned with the preset anchor bolts, and tighten the fastening nuts. Then, place steel bars around the bottom of the irregular steel column, and pour concrete into the installation groove to form a structure.

[0016] Step 9. The concrete pouring conduit is laid inside the irregular steel column through the top opening, and then fine stone concrete is poured through the opening to fill and solidify the internal cavity of the irregular steel column.

[0017] Preferably, the irregular steel column is assembled and welded from a base section component, a standard section component, and a top section component.

[0018] Preferably, the base segment component consists of a first outer arc-shaped panel, an arc-like plate, a side enclosure plate, a base segment vertical reinforcing plate, a base plate, and stiffening ribs;

[0019] Furthermore, the inner walls of the first outer arc-shaped panel, the arc-like plate, and the side enclosure are all provided with shear studs.

[0020] Furthermore, the two vertical reinforcing plates of the base section are welded and fixed to the arc-shaped plate; then the two side panels are welded and fixed to both sides of the arc-shaped plate respectively.

[0021] Furthermore, the two sides of the first outer arc-shaped panel are welded to the two sides of the arc-like plate, so that the first outer arc-shaped panel, the side side panels, and the arc-like plate together form a cavity structure with two openings.

[0022] Furthermore, the vertical reinforcing plate of the base section is welded to the inner wall of the first outer arc-shaped panel through the two openings.

[0023] Preferably, shear studs are welded to both sides of the vertical reinforcing plate of the base section; two protrusions are provided at the upper part of the vertical reinforcing plate of the base section; and a plug joint is provided at the lower end of the vertical reinforcing plate of the base section.

[0024] Furthermore, the base plate is provided with a socket and anchor bolt holes; the socket is adapted to the size of the connector of the vertical reinforcing plate of the base section, so that the connector can be inserted into the socket.

[0025] Furthermore, the vertical reinforcing plate of the base section is inserted into the socket on the base plate through the plug at its lower end, and the plug is welded to the base plate on the bottom surface of the base plate, thereby forming a connection between the vertical reinforcing plate of the base section and the base plate.

[0026] Furthermore, the bottom periphery of the cavity structure formed by the first outer arc-shaped panel, the side side panels, and the arc-like plate is welded and fixed to the upper surface of the base plate; and stiffening ribs are further welded and fixed to the bottom periphery of the cavity structure.

[0027] Furthermore, the lower half of the first outer arc-shaped panel, the arc-like plate, and the side enclosure plate in the base segment component are all provided with shear studs.

[0028] Preferably, the standard segment assembly consists of a first outer arc-shaped panel, an arc-like plate, a side enclosure plate, and a standard segment vertical reinforcing plate;

[0029] Furthermore, shear studs are welded to both sides of the standard section vertical reinforcing plate, and two protrusions are provided on its upper and lower parts respectively;

[0030] Furthermore, the assembly is performed using the arc-shaped plate as a reference: first, two standard vertical reinforcing plates are welded and fixed to the arc-shaped plate; then, two side panels are welded to both sides of the arc-shaped plate respectively; subsequently, the two sides of the first outer arc-shaped panel are welded to the two sides of the arc-shaped plate, so that the first outer arc-shaped panel, the two side panels, and the arc-shaped plate together form a cavity structure with two openings; then, the standard vertical reinforcing plates are welded and fixed to the inner wall of the first outer arc-shaped panel through the two openings.

[0031] Preferably, the top-level segment assembly consists of a first outer arc-shaped panel, an arc-like plate, side panels, a top-level segment vertical reinforcing plate, and a lifting port;

[0032] Furthermore, the upper end of the top vertical reinforcing plate is provided with a hoisting port, and the lower part of the top vertical reinforcing plate is provided with two protrusions;

[0033] Furthermore, the top section vertical reinforcing plate, the arc-shaped plate, the side enclosure plate, and the first outer arc-shaped panel are welded and fixed in sequence to form the top section cavity structure; wherein, the connection relationship between the arc-shaped plate, the side enclosure plate, and the first outer arc-shaped panel is the same as the connection relationship of the corresponding components in the standard section assembly.

[0034] Preferably, the second outer arc-shaped panel is provided with eight elongated holes, the size of which is set to match the protrusion to achieve a plug-in fit between the two.

[0035] Furthermore, the top of the vertical reinforcing plate of the base section is welded to the bottom of the vertical reinforcing plate of the standard section, and an arc-shaped plate and a side enclosure plate are welded between the base section assembly and the standard section assembly;

[0036] Furthermore, install the second outer arc panel, align the elongated holes on the second outer arc panel with the protrusions on the standard section vertical reinforcing plate and the base section vertical reinforcing plate respectively and insert them, then weld the protrusions to the outer surface of the second outer arc panel, and finally weld and fix the four sides of the second outer arc panel to the first outer arc panel and the side enclosure.

[0037] Furthermore, the top of the standard section vertical reinforcing plate is welded to the bottom of the top section vertical reinforcing plate, and an arc-shaped plate and a side panel are welded between the standard section assembly and the top section assembly.

[0038] Furthermore, the second outer arc-shaped panel is installed. The elongated holes on the second outer arc-shaped panel are aligned with and inserted into the protrusions on the standard section vertical reinforcing plate and the top section vertical reinforcing plate, respectively. Then, the protrusions are welded to the outer surface of the second outer arc-shaped panel, and finally, the four sides of the second outer arc-shaped panel are welded and fixed to the first outer arc-shaped panel and the side enclosure.

[0039] Preferably, the weld seams of the irregular steel column are ground smooth, and anti-corrosion paint is sprayed onto the outer wall of the irregular steel column.

[0040] Preferably, the base plate is provided with anchor bolt holes, and anchor bolts are pre-embedded in the foundation base according to the position data of the anchor bolt holes to achieve precise positioning and installation of the base plate;

[0041] Furthermore, the irregular steel column is hoisted to the anchor bolt position through the hoisting port. By adjusting the position of the irregular steel column, the anchor bolt holes on its base plate are aligned with the preset anchor bolts, and the fastening nuts are tightened. Reinforcing bars are placed around the bottom of the irregular steel column, and then concrete is poured into the reserved installation groove to form a structure.

[0042] Preferably, a concrete pouring conduit is installed inside the irregularly shaped steel column through the top opening, and then fine aggregate concrete is poured through the opening to fill and solidify the internal cavity of the irregularly shaped steel column.

[0043] Compared with the prior art, the advantages of the present invention are:

[0044] 1) This invention breaks down irregularly shaped steel columns into segments, transforming the complex three-dimensional shape into BIM models of the base section, standard section, and top section. Based on these precise BIM models, digital processing data for various steel plates can be generated, and CNC equipment can be driven to perform automated material cutting and quarrying, greatly reducing the errors caused by traditional manual layout and calculation, and significantly improving the accuracy and production efficiency of component processing.

[0045] 2) The present invention provides protrusions at the ends of the vertical reinforcing plates of the base section, the standard section, and the top section, which are connected to the elongated holes of the second outer arc panel, thereby effectively solving the technical problem that welding operations cannot be performed directly due to space obstruction.

[0046] 3) By arranging shear studs on the inner walls of the first outer arc panel, the second outer arc panel, the arc-shaped plate and the side enclosure, the bonding performance between the fine stone concrete in the internal cavity of the irregular steel column and the irregular steel column can be effectively improved.

[0047] 4) By adopting a segmented processing method, irregular steel columns of different heights can be manufactured by increasing or decreasing the number of intermediate standard section components to meet diverse design requirements. Attached Figure Description

[0048] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0049] Figure 1A flowchart illustrating a BIM-based method for disassembling, processing, and installing irregularly shaped steel columns according to the present invention.

[0050] Figure 2 This is a structural diagram of the vertical reinforcing plate of the base section of the present invention;

[0051] Figure 3 This is a structural diagram of the base plate of the present invention;

[0052] Figure 4 This is a structural diagram of the base segment component of the present invention;

[0053] Figure 5 This is a top view of the base segment component of the present invention;

[0054] Figure 6 This is a structural diagram of the standard section vertical reinforcing plate of the present invention;

[0055] Figure 7 This is a structural diagram of the standard segment assembly of the present invention;

[0056] Figure 8 This is a structural diagram of the top section vertical reinforcing plate of the present invention;

[0057] Figure 9 This is a structural diagram of the top-level segment component of the present invention;

[0058] Figure 10 This is a structural diagram of the second outer arc-shaped panel of the present invention;

[0059] Figure 11 This is a schematic diagram of the installation of the irregularly shaped steel column according to the present invention;

[0060] Figure 12 This is a top view of the internal cavity of the irregular steel column of the present invention after fine stone concrete has been poured.

[0061] In the diagram: 1-First outer arc panel, 2-Second outer arc panel, 201-Elongated hole, 3-Curved plate, 4-Side enclosure, 5-Base section vertical reinforcing plate, 501-Protrusion, 502-Plug joint, 6-Shear stud, 7-Base plate, 701-Anchor bolt hole, 702-Socket, 8-Stiffening rib, 9-Top section vertical reinforcing plate, 10-Lifting port, 11-Standard section vertical reinforcing plate, 12-Anchor bolt, 13-Fastening nut, 14-Foundation base, 15-Installation groove, 16-Fine aggregate concrete. Detailed Implementation

[0062] The accompanying drawings are for illustrative purposes only; to better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product; the terms "upper," "lower," "left," "right," "side," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. For those skilled in the art, some well-known structures and their descriptions in the drawings may be omitted, and therefore should not be construed as a limitation of the present invention.

[0063] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The invention will now be described in further detail with reference to the accompanying drawings.

[0064] like Figure 1 As shown, this invention provides a BIM-based method for the disassembly, processing, and installation of irregularly shaped steel columns, specifically including the following steps:

[0065] Step 1. Create a 3D BIM model of the irregular steel column based on the design drawings;

[0066] Step 2. Decompose the 3D BIM model of the irregular steel column into: base section BIM model, standard section BIM model and top section BIM model;

[0067] Step 3. The base section BIM model, standard section BIM model and top section BIM model are further disassembled to obtain the steel plate components that form their basic constituent units; then, the dimensions of the steel plate components are calibrated in the BIM model.

[0068] Step 4. For the area of ​​the second outer arc panel 2 where welding is not possible, a process of reserving elongated holes 201 and connecting them by plug welding is adopted; the position of the elongated holes 201 on the second outer arc panel 2 is accurately spatially located in the BIM model; at the same time, according to the design drawings, the opening position of the anchor bolt holes 701 of the base plate 7 is accurately marked in the BIM model.

[0069] Step 5. Input the BIM model containing the three-dimensional geometric data of the steel plate into the Robotsmart welding software to drive the welding robot to perform laser cutting on the steel plate;

[0070] Step 6. Weld shear studs 6 on the inner sides of the first outer arc panel 1, the second outer arc panel 2, the vertical reinforcing plate 5 of the base section, the vertical reinforcing plate 11 of the standard section, and the two sides of the vertical reinforcing plate 9 of the top section.

[0071] Step 7. Assemble and weld the processed steel plate components in sequence, and assemble and weld the base section components, standard section components and top section components of the irregular steel column in sequence; grind the weld seams of the irregular steel column and spray anti-corrosion paint on the outside;

[0072] Step 8. Hoist the welded irregular steel column to the reserved anchor bolt 12 on the foundation base 14. Adjust the position of the irregular steel column so that the anchor bolt hole 701 on its base plate 7 is aligned with the preset anchor bolt 12, and tighten the fastening nut 13. Then, place steel bars around the bottom of the irregular steel column, and pour concrete into the installation groove 15 to form a structure.

[0073] Step 9. The concrete pouring conduit is laid inside the irregular steel column through the top opening, and then fine stone concrete 16 is poured through the opening to fill and solidify the internal cavity of the irregular steel column.

[0074] The irregular steel column is assembled and welded from base section components, standard section components and top section components.

[0075] The base section component consists of a first outer arc-shaped panel 1, an arc-like plate 3, a side enclosure plate 4, a base section vertical reinforcing plate 5, a base plate 7, and stiffening ribs 8.

[0076] like Figure 2 As shown, shear studs 6 are welded to both sides of the vertical reinforcing plate 5 of the base section; two protrusions 501 are provided on the upper part of the vertical reinforcing plate 5 of the base section; and a plug joint 502 is provided at the lower end of the vertical reinforcing plate 5 of the base section.

[0077] The two vertical reinforcing plates 5 of the base section are welded and fixed to the arc-shaped plate 3; then the two side panels 4 are welded and fixed to both sides of the arc-shaped plate 3 respectively.

[0078] Weld the two sides of the first outer arc panel 1 to the two sides of the arc-like plate 3 respectively, so that the first outer arc panel 1, the side side panels 4 on both sides and the arc-like plate 3 together form a cavity structure with two openings.

[0079] The vertical reinforcing plate 5 of the base section is welded to the inner wall of the first outer arc-shaped panel 1 through the two openings.

[0080] like Figure 3As shown, the base 7 is provided with a socket 702 and a ground anchor bolt hole 701; the socket 702 is adapted to the size of the plug 502 of the vertical reinforcing plate 5 of the base section, so that the plug 502 can be inserted into the socket 702.

[0081] The vertical reinforcing plate 5 of the base section is inserted into the socket 702 on the base plate 7 through the plug 502 at its lower end, and the plug 502 is welded to the base plate 7 on the bottom surface of the base plate 7, thereby forming a connection between the vertical reinforcing plate 5 of the base section and the base plate 7.

[0082] like Figure 4 As shown, the bottom periphery of the cavity structure formed by the first outer arc panel 1, the side side panels 4 and the arc-like plate 3 are welded and fixed to the upper surface of the base plate 7; and stiffening ribs 8 are further welded and fixed to the bottom periphery of the cavity structure; shear studs 6 are evenly distributed on the lower half of the first outer arc panel 1, the arc-like plate 3 and the side side panels 4 in the base section assembly.

[0083] like Figure 5 As shown, the inner walls of the first outer arc-shaped panel 1, the arc-shaped plate 3, and the side enclosure 4 are all provided with shear studs 6.

[0084] The standard section assembly consists of a first outer arc-shaped panel 1, an arc-like plate 3, a side enclosure plate 4, and a standard section vertical reinforcing plate 11;

[0085] like Figure 6 As shown, shear studs 6 are welded to both sides of the standard section vertical reinforcing plate 11, and two protrusions 501 are provided on its upper and lower parts respectively;

[0086] like Figure 7 As shown, the assembly is performed with the arc-shaped plate 3 as the reference: First, two standard vertical reinforcing plates 11 are welded and fixed to the arc-shaped plate 3; then, two side panels 4 are welded to the two sides of the arc-shaped plate 3 respectively; subsequently, the two sides of the first outer arc panel 1 are welded to the two sides of the arc-shaped plate 3 respectively, so that the first outer arc panel 1, the two side panels 4, and the arc-shaped plate 3 together form a cavity structure with two openings; then, the standard vertical reinforcing plates 11 are welded and fixed to the inner wall of the first outer arc panel 1 through the two openings.

[0087] The top section assembly consists of a first outer arc-shaped panel 1, an arc-like plate 3, a side enclosure 4, a top section vertical reinforcing plate 9, and a hoisting port 10;

[0088] like Figure 8 As shown, the upper end of the top vertical reinforcing plate 9 is provided with a hoisting port 10, and the lower part of the top vertical reinforcing plate 9 is provided with two protrusions 501;

[0089] like Figure 9 As shown, the top section vertical reinforcing plate 9, the arc-shaped plate 3, the side enclosure plate 4, and the first outer arc-shaped panel 1 are welded and fixed in sequence to form the top section assembly; wherein, the connection relationship between the arc-shaped plate 3, the side enclosure plate 4, and the first outer arc-shaped panel 1 is the same as the connection relationship of the corresponding parts in the standard section assembly.

[0090] like Figure 10 As shown, the second outer arc panel 2 is provided with eight elongated holes 201. The size of the elongated holes 201 is set to match the protrusion 501 so as to realize the insertion and mating between the two.

[0091] The top of the vertical reinforcing plate 5 of the base section is welded to the bottom of the vertical reinforcing plate 11 of the standard section, and an arc-shaped plate 3 and a side enclosure plate 4 are welded between the base section assembly and the standard section assembly.

[0092] Install the second outer arc panel 2, align the elongated holes 201 on the second outer arc panel 2 with the protrusions 501 on the standard section vertical reinforcing plate 11 and the base section vertical reinforcing plate 5 respectively and insert them, then weld the protrusions 501 to the outer surface of the second outer arc panel 2, and finally weld and fix the four sides of the second outer arc panel 2 to the first outer arc panel 1 and the side enclosure 4.

[0093] The top of the standard section vertical reinforcing plate 11 is welded to the bottom of the top section vertical reinforcing plate 9, and an arc-shaped plate 3 and a side enclosure plate 4 are welded between the standard section assembly and the top section assembly.

[0094] Install the second outer arc panel 2, align the elongated holes 201 on the second outer arc panel 2 with the protrusions 501 on the standard section vertical reinforcing plate 11 and the top section vertical reinforcing plate 9 respectively and insert them, then weld the protrusions 501 to the outer surface of the second outer arc panel 2, and finally weld and fix the four sides of the second outer arc panel 2 to the first outer arc panel 1 and the side enclosure 4.

[0095] The weld seams of the irregular steel column are ground smooth, and anti-corrosion paint is sprayed onto the outer wall of the irregular steel column.

[0096] like Figure 11 As shown, the base plate 7 has ground anchor bolt holes 701. Based on the position data of the ground anchor bolt holes 701, anchor bolts 12 are pre-embedded in the foundation base 14 to achieve precise positioning and installation of the base plate 7.

[0097] The irregular steel column is hoisted to the anchor bolt 12 through the hoisting port 10. By adjusting the position of the irregular steel column, the anchor bolt hole 701 on its base plate 7 is aligned with the preset anchor bolt 12, and the fastening nut 13 is tightened. Reinforcing bars are arranged around the bottom of the irregular steel column, and then concrete is poured into the reserved installation groove 15 to form a structure.

[0098] like Figure 12 As shown, a concrete pouring conduit is installed inside the irregularly shaped steel column through the top opening, and then fine aggregate concrete 16 is poured through the opening to fill and solidify the internal cavity of the irregularly shaped steel column.

[0099] Furthermore, it should be understood that although this specification describes the embodiments, it does not mean that the present invention only includes the technical solutions in the embodiments. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art, which are also within the protection scope of the present invention.

Claims

1. A BIM-based special-shaped steel column splitting processing and installation construction method, characterized in that, The special-shaped steel column comprises a first outer arc-shaped panel, a second outer arc-shaped panel, an arc-like panel, a lateral surrounding panel, a base layer section vertical reinforcing plate, a standard section vertical reinforcing plate, a top layer section vertical reinforcing plate, shear-resistant studs, long holes, a base plate and stiffening ribs. The disassembling, processing and installation construction method specifically comprises the following steps: Step 1. Establishing a three-dimensional BIM model of the special-shaped steel column according to design drawings; Step 2. Disassembling the three-dimensional BIM model of the special-shaped steel column, and disassembling the three-dimensional BIM model of the special-shaped steel column into a base layer section BIM model, a standard section BIM model and a top layer section BIM model; Step 3. Disassembling the base layer section BIM model, the standard section BIM model and the top layer section BIM model again to obtain steel plate pieces of basic constituent units, and then calibrating the size of the steel plate pieces in the BIM model; Step 4. For the second outer arc-shaped panel area which cannot be subjected to welding operation, a long hole is reserved and a plug welding connection process is adopted, the position of the long hole on the second outer arc-shaped panel is accurately positioned in the BIM model, and the opening position of the ground anchor bolt hole of the base plate is accurately calibrated in the BIM model according to the design drawing; Step 5. Inputting the BIM model containing three-dimensional geometric data information of the steel plate pieces into the Robotsmart welding software to drive the welding robot to perform laser cutting processing on the steel plate pieces; Step 6. Welding shear-resistant studs on the inner side of the first outer arc-shaped panel and the second outer arc-shaped panel and on both sides of the base layer section vertical reinforcing plate, the standard section vertical reinforcing plate and the top layer section vertical reinforcing plate; Step 7. Assembling and welding the processed steel plate pieces in sequence, assembling and welding the base layer section assembly, the standard section assembly and the top layer section assembly of the special-shaped steel column in sequence, polishing the welds of the special-shaped steel column, and spraying anticorrosive paint on the outside; Step 8. Hoisting the welded special-shaped steel column at the reserved ground anchor bolt of the base, adjusting the pose of the special-shaped steel column so that the ground anchor bolt hole on the base plate is aligned with the preset ground anchor bolt, and screwing the fastening nut tightly, and then configuring steel bars around the bottom of the special-shaped steel column, pouring concrete into the installation groove to form a structure; Step 9. Laying a concrete pouring pipe in the special-shaped steel column through the top opening of the special-shaped steel column, and then pouring fine aggregate concrete through the opening to fill and solidify the internal cavity of the special-shaped steel column.

2. The BIM-based special-shaped steel column splitting, machining and installation construction method according to claim 1, characterized in that, The special-shaped steel column is composed of a base layer section assembly, a standard section assembly and a top layer section assembly; the base layer section assembly is composed of a first outer arc-shaped panel, an arc-like panel, a lateral surrounding panel, a base layer section vertical reinforcing plate, a base plate and stiffening ribs; the standard section assembly is composed of a first outer arc-shaped panel, an arc-like panel, a lateral surrounding panel and a standard section vertical reinforcing plate; and the top layer section assembly is composed of a first outer arc-shaped panel, an arc-like panel, a lateral surrounding panel, a top layer section vertical reinforcing plate and a hoisting opening.

3. The BIM-based special-shaped steel column splitting, machining and installation construction method according to claim 1, characterized in that, Shear-resistant studs are welded on both sides of the base layer section vertical reinforcing plate, two protruding portions are arranged on the upper portion of the base layer section vertical reinforcing plate, and a plug-in connector is arranged on the lower end portion of the base layer section vertical reinforcing plate.

4. The BIM-based special-shaped steel column splitting, machining and installation construction method according to claim 1, characterized in that, The standard section vertical reinforcing plate is welded with shear studs on both sides.

5. The BIM-based processing and installation construction method for special-shaped steel columns according to claim 1, characterized in that, The upper end of the top section vertical reinforcing plate is provided with a hoisting opening, and the lower part of the top section vertical reinforcing plate is provided with two protruding parts.

6. The BIM-based special-shaped steel column splitting, machining and installation construction method according to claim 1, characterized in that, Eight long holes are formed on the second outer arc-shaped panel, and the size of the long holes is matched with the size of the protruding parts, so that the protruding parts can be inserted into the long holes.

7. The BIM-based processing and installation construction method for special-shaped steel columns according to claim 1, characterized in that, The base plate is provided with a socket opening and a ground anchor bolt hole, and the size of the socket opening is matched with the size of the plug-in joint of the base section vertical reinforcing plate, so that the plug-in joint can be inserted into the socket opening.

8. The BIM-based special-shaped steel column splitting, machining and installation construction method according to claim 1, characterized in that, The first outer arc-shaped panel, the arc-shaped plate and the lower half of the lateral enclosing plate in the base section assembly are uniformly provided with shear studs.

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