A reinforcing structure between a beam column steel frame of a steel structure factory building

Abstract

The utility model discloses a kind of reinforcing structures between steel structure factory building beam column steel frame, including the inclined brace component being arranged between existing steel column and existing steel frame beam, inclined brace component includes inclined brace rod, and column connecting plate and beam connecting plate being arranged at both ends, column connecting plate connects the existing steel column, and beam connecting plate connects the existing steel frame beam;Existing steel column is provided with column reinforcing plate in the region of connecting the column connecting plate, and existing steel frame beam is provided with beam reinforcing plate in the region of connecting the beam connecting plate;Adjacent the existing steel column between being arranged at factory building side wall is further provided with detachable intercolumnar rigid tie rod, and the setting height of the intercolumnar rigid tie rod is not lower than the height of column connecting plate at the position. Through the above setting, the safety and stability of the roof truss beam can be better ensured, the roof permanent load can be increased, the overall structure is simple, and the original structure does not need to be disassembled or adjusted, so the installation and construction are easy.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a reinforcement structure between beams, columns, and steel frames of a steel structure factory building. Background Technology

[0002] With the development of building technology, photovoltaic buildings are becoming more and more common. Some factories also introduce photovoltaic systems during construction to use solar energy to supplement their electricity consumption. If the installation of solar panels is considered in the design of the factory building, the load-bearing design of the factory building will be better. However, for some factories that have already been built and put into use but do not have such roof load-bearing design, if solar panels are added to their roofs, the original structure will be insufficient in load-bearing capacity, so the original building needs to be structurally reinforced.

[0003] Existing reinforcement methods mostly involve adding various supporting components to the original structure to enhance its support capacity. However, while excessive support can reinforce the structure, it also increases the workload and cost. Moreover, the reinforcement effect of using simple diagonal bracing is limited. Another method is to reinforce the original building structure through dismantling and reconstruction. Although this method is effective, it involves even more work and requires more modifications to the existing structure. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the prior art by providing a reinforcement structure between the beams, columns, and steel frames of a steel structure factory building.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A reinforcement structure between beams, columns, and steel frames in a steel structure factory building includes a bracing assembly installed between existing steel columns and existing steel frame beams. The bracing assembly includes a bracing rod, and column connecting plates and beam connecting plates at both ends of the bracing rod. The column connecting plates are detachably connected to the existing steel columns, and the beam connecting plates are detachably connected to the existing steel frame beams. Each existing steel column has a column reinforcing plate in the area where it connects to the column connecting plate, and each existing steel frame beam has a beam reinforcing plate in the area where it connects to the beam connecting plate. A detachable rigid tie rod is also installed between adjacent existing steel columns located on the side wall of the factory building. The height of the rigid tie rod is not lower than the height of the column connecting plate at its location. This design enhances the safety and stability of the roof truss beams and increases the permanent load-bearing capacity of the roof. Furthermore, the overall structure is simple, easy to manufacture, and requires no disassembly or adjustment of the original structure, making installation and construction convenient.

[0007] By setting up these diagonal bracing components, their corresponding reinforcing plates, and the rigid tie rods between the columns, the factory building, which is a pure frame structure, is transformed into a "frame-bracing" collaborative force-bearing system. This optimizes the horizontal force transmission path, significantly improves the lateral stiffness of the structure, and reduces lateral displacement and deformation. It also shares the stress on the beam and column components, reduces the slenderness ratio of the columns, and improves compressive stability. At the same time, it disperses local concentrated loads to the overall structure, extends the service life of the components, and reduces maintenance costs.

[0008] Furthermore, the existing steel column is an H-shaped steel column, the column connecting plate is connected to the side wing plate of the existing steel column, the column reinforcing plate is arranged laterally inside the existing steel column and is welded and fixed to the side wing plate and web plate of the existing steel column; a pair of column reinforcing plates are arranged at each location.

[0009] Furthermore, the existing steel frame beam is an I-beam structure, the beam connecting plate is connected to the lower flange of the existing steel frame beam, the beam reinforcing plate is vertically arranged inside the existing steel frame beam and welded and fixed to the upper flange, lower flange and web of the existing steel frame beam; a pair of beam reinforcing plates are arranged at each location.

[0010] Furthermore, the diagonal brace is a hollow round rod, and its two ends are welded and fixed to the column connecting plate and the beam connecting plate respectively. The wall thickness of the diagonal brace is not less than 5mm, the outer diameter of the diagonal brace is not less than 150mm, and the length of the diagonal brace is not less than 2.5m.

[0011] Furthermore, the column connecting plate and the existing steel column, as well as the beam connecting plate and the existing steel frame beam, are provided with multiple connecting holes, which are respectively connected and fixed by bolts or tie rods.

[0012] Furthermore, the column reinforcing plate and the beam reinforcing plate are both straight plates with a thickness of not less than 5mm.

[0013] Furthermore, the column reinforcing plate is an I-beam plate, and the flange of the I-beam plate abuts against the inner side of the side flange of the H-shaped steel column; magnets are also provided on the flange of the I-beam plate and the column connecting plate, which can play a role in pre-connection and positioning.

[0014] Furthermore, one side of the beam connecting plate is provided with an upwardly bent snap-fit ​​part, which is fastened to the edge of the lower flange of the existing steel frame beam, allowing it to overlap on the steel frame beam and reducing the difficulty of hoisting construction.

[0015] Furthermore, each end of the rigid tie rod between the columns is provided with an end plate, and a side connecting plate is provided on the end plate. The side connecting plate is connected to the flange plate of the existing steel column.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The reinforcement structure between the beams and columns of this steel structure factory building, through the setting of the diagonal bracing components, reinforcing plates, and rigid tie rods between the columns, can improve the support strength and stability of the original steel structure factory building, better distribute the load, ensure safety, and make it possible to install heavy equipment on the original building structure; 2. Through the above-mentioned settings, the safety and stability of the roof truss beams can be better guaranteed, and the permanent load of the roof can be increased; moreover, the overall structure is simple, easy to manufacture, and does not require disassembly or adjustment of the original structure, making it easy to install and construct; 3. Through the setting of these diagonal bracing components and their corresponding reinforcing plates and rigid tie rods between the columns, the pure frame structure factory building is transformed into a "frame-support" collaborative load-bearing body. The system optimizes the horizontal force transmission path, significantly improving the lateral stiffness of the structure and reducing lateral displacement and deformation; it also shares the stress on beam and column members, reduces the slenderness ratio of columns, and improves compressive stability; at the same time, it disperses local concentrated loads to the overall structure, extending the service life of components and reducing maintenance costs; 4. The snap-fit ​​part on the beam connecting plate allows the beam connecting plate to be hung below the existing steel frame beam. During installation, the hanging structure reduces the difficulty of suspension construction and the difficulty of aligning the connection holes; 5. The magnet provides a pre-connection function. The bracing components are constrained from top to bottom, keeping their relative positions unchanged, allowing for the connection of multiple bolts; it also facilitates the pre-connection and positioning of the column reinforcing plate, making it easier to weld and fix. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall layout of the reinforcement structure between the beams, columns and steel frames of a steel structure factory building according to this utility model (a cross-section of the factory building).

[0018] Figure 2 This is a schematic diagram of the connection between the diagonal brace of this utility model and the existing steel column;

[0019] Figure 3 This is a schematic diagram of the connection between the diagonal brace of this utility model and the existing steel frame beam;

[0020] Figure 4 This is a schematic diagram of another structure for connecting the diagonal brace of this utility model to an existing steel column;

[0021] Figure 5 This is a structural schematic diagram of the inter-column rigid tie rod of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure connecting the inter-column rigid tie rod of this utility model to the existing steel column;

[0023] Figure 7 This is a schematic diagram of another structure for connecting the diagonal brace of this utility model to an existing steel column;

[0024] Figure 8 This is a schematic diagram of the end face structure of the column connecting plate of this utility model connecting to the existing steel column;

[0025] Figure 9 for Figure 8 Schematic diagram of section AA;

[0026] Figure 10 This is a schematic diagram of another structure of the beam connecting plate of this utility model;

[0027] Figure 11 for Figure 10 A schematic diagram showing the connection between the central beam connecting plate and the existing steel frame beam;

[0028] Figure 12 for Figure 10 Schematic diagram of the end face connecting the central beam connecting plate to the existing steel frame beam;

[0029] In the diagram: 1. Existing steel column; 2. Existing steel frame beam; 3. Diagonal bracing assembly; 301. Diagonal brace; 302. Column connecting plate; 303. Beam connecting plate; 4. Column reinforcing plate; 5. Beam reinforcing plate; 6. Inter-column rigid tie rod; 7. End plate; 8. Side connecting plate; 9. Reinforcing plate wing plate; 10. Connecting hole; 11. Magnet; 12. Snap-fit ​​part. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1

[0032] like Figures 1-3As shown, a reinforcement structure between beams, columns, and steel frames of a steel structure factory building includes a diagonal bracing assembly 3 installed between existing steel columns 1 and existing steel frame beams 2. The diagonal bracing assembly 3 includes a diagonal brace 301, and column connecting plates 302 and beam connecting plates 303 installed at both ends of the diagonal brace 301. The column connecting plate 302 is detachably connected to the existing steel column 1, and the beam connecting plate 303 is detachably connected to the existing steel frame beam 2. The existing steel column 1 is provided with a column reinforcing plate 4 in the area where it is connected to the column connecting plate 302, and the existing steel frame beam 2 is provided with a beam reinforcing plate 5 in the area where it is connected to the beam connecting plate 303. A detachable inter-column rigid tie rod 6 is also provided between adjacent existing steel columns 1 arranged on the side wall of the factory building. The height of the inter-column rigid tie rod 6 is not lower than the height of the column connecting plate 302 at its location.

[0033] The reinforcement structure between the beams, columns, and steel frames of this steel structure workshop, through the installation of the diagonal bracing assembly 3, the reinforcing plate, and the rigid tie rod 6 between the columns, can improve the support strength and stability of the original steel structure workshop, better distribute the load, ensure safety, and make it possible to install heavy equipment on the original building structure.

[0034] The above-mentioned design ensures the safety and stability of the roof truss beams and increases the permanent load on the roof. Moreover, the overall structure is simple, easy to manufacture, and does not require disassembly or adjustment of the original structure, making it easy to install and construct.

[0035] The diagonal bracing assembly 3 is configured to form a structurally stable triangular support and reinforcement structure between each existing steel column 1 and the existing steel frame beam 2. The column connecting plate 302 and the beam connecting plate 303 facilitate the connection of both ends of the diagonal bracing rod 301 with the existing steel column and steel frame beam, so as to be connected and fixed by connectors.

[0036] Because of the installation of the diagonal bracing component 3, the existing steel column 1 and the existing steel frame beam 2 need to bear and distribute more loads at their connection points. Therefore, the column reinforcing plate 4 and the beam reinforcing plate 5 are added in the area where the column connecting plate and the beam connecting plate are installed to further improve the load-bearing capacity and structural strength at that point.

[0037] In the factory building, except for the steel columns on the four side walls, the diagonal bracing components are arranged symmetrically on both sides of the other steel columns. Generally, only a single diagonal bracing component can be installed on the steel columns on the side walls, but by adding the rigid tie rods between the columns, the strength and stability of the four side walls can be improved.

[0038] By setting up these diagonal bracing components 3, their corresponding reinforcing plates, and the inter-column rigid tie rods 6, the factory building with a pure frame structure is transformed into a "frame-bracing" collaborative force-bearing system. This optimizes the horizontal force transmission path, significantly improves the lateral stiffness of the structure, and reduces lateral displacement and deformation. It also shares the stress on the beam and column components, reduces the slenderness ratio of the columns, and improves compressive stability. At the same time, it disperses local concentrated loads to the overall structure, extends the service life of the components, and reduces maintenance costs.

[0039] Furthermore, the existing steel column 1 is an H-shaped steel column, the column connecting plate 302 is connected to the side wing plate of the existing steel column 1, and the column reinforcing plate 4 is arranged laterally inside the existing steel column 1 and welded and fixed to the side wing plate and web plate of the existing steel column 1; a pair of column reinforcing plates 4 are arranged at each location.

[0040] For the H-shaped steel column, the horizontally arranged column reinforcing plate 4 can be connected to its two side flanges and web at the same time, and the column reinforcing plate 4 is symmetrically arranged on both sides. The column reinforcing plate 4 is relatively centrally arranged relative to the column connecting plate. These arrangements can significantly improve the reinforcement effect.

[0041] Furthermore, the existing steel frame beam 2 is an I-beam structure, the beam connecting plate 303 is connected to the lower flange of the existing steel frame beam 2, the beam reinforcing plate 5 is vertically arranged inside the existing steel frame beam 2, and is welded and fixed to the upper flange, lower flange and web of the existing steel frame beam 2; a pair of beam reinforcing plates are arranged at each location.

[0042] Similarly, for the I-beam structure, the vertically arranged beam reinforcing plate 5 can be connected to its upper and lower flanges and web simultaneously, and the beam reinforcing plate 5 is symmetrically arranged on both sides. The beam reinforcing plate 5 is relatively centrally arranged relative to the beam connecting plate. These arrangements can significantly improve the reinforcement effect.

[0043] Furthermore, the diagonal brace 301 is a hollow round rod. Both ends of the diagonal brace 301 are welded and fixed to the column connecting plate 302 and the beam connecting plate 303, respectively. The wall thickness of the diagonal brace 301 is not less than 5mm, the outer diameter of the diagonal brace 301 is not less than 150mm, and the length of the diagonal brace 301 is not less than 2.5m. This configuration provides significant reinforcement for large factory structures.

[0044] Furthermore, the column connecting plate 302 and the existing steel column 1, as well as the beam connecting plate 303 and the existing steel frame beam 2, are respectively provided with multiple connecting holes 10, and are respectively connected by bolts; for the basically symmetrically arranged diagonal braces 301, their column connecting plates can also be fixed by tie rods, such as... Figure 4 As shown.

[0045] Furthermore, the column reinforcing plate 4 and the beam reinforcing plate 5 are both straight plates with a thickness of not less than 5mm, preferably 10mm.

[0046] Furthermore, in combination Figure 5 As shown, the two ends of the inter-column rigid tie rod 6 are respectively provided with end plates 7, and the end plates 7 are provided with side connecting plates 8, which are connected to the flange plates of the existing steel column 1.

[0047] The rigid tie rod 6 between columns is a hollow round rod with an outer diameter of not less than 100mm. The end and side connecting plates facilitate its connection and fixation to the existing steel column.

[0048] Furthermore, the outer periphery of the diagonal brace 301 may also be provided with lifting rings to facilitate the hoisting and installation of the diagonal brace assembly, since a lifting tool such as an electric hoist is required to lift it to the expected height position during installation.

[0049] Furthermore, the outer surfaces of the diagonal bracing assembly 3, the column reinforcing plate 4, the beam reinforcing plate 5, and the inter-column rigid tie rod 6 are respectively provided with anti-corrosion and anti-rust coatings, which include a base layer, an intermediate layer, and a top layer.

[0050] Specifically, the base layer is an epoxy zinc-rich primer coating, applied in two coats, with a dry film thickness of 25x2µm (factory coating); the intermediate layer is an epoxy micaceous iron oxide intermediate paint coating, applied in one coat, with a dry film thickness of 50µm (factory coating); the top layer is a polyurethane topcoat coating, applied in two coats, one factory coating with a dry film thickness of not less than 25mm and one on-site coating with a dry film thickness of not less than 25µm; the total dry film thickness of the topcoat is not less than 50µm.

[0051] One installation method for reinforcing the beam-column-steel frame of this steel structure workshop is as follows:

[0052] First, the layout and positioning are carried out. The axis of the beams and columns is marked with ink lines. Using this axis as a reference, the position of the existing structure and the plane of the entire truss are determined. The specific positions of the reinforcing plates, connecting holes, diagonal brace bevels, etc. are determined according to the design requirements.

[0053] Then, holes are drilled in the existing steel columns and existing steel frame beams, according to the hole diameter required by the drawings. The error of drilling on site should be controlled within 2mm.

[0054] After the diagonal bracing components and the inter-column rigid tie rods and other reinforcement components are manufactured and inspected according to plan, they are promptly transported to the construction site for placement. Due to the weight of the reinforcement components (approximately 100kg for a single diagonal brace and connecting plate), horizontal transportation within the site is carried out using electric forklifts or manual carts, while vertical transportation of the reinforcement components is carried out using scissor lifts (trolleys).

[0055] After the reinforcement components are transported and placed in place, a comprehensive inspection and assembly test will be conducted at the installation site. Once confirmed to be correct, installation will proceed according to the construction procedures. The diagonal bracing components will be hoisted using chain hoists. After adjustment, they will be positioned and installed at the upper and lower node connections. Due to the significant weight of the reinforcement components, the safety of the chain hoists, positioning bolts, temporary fixing points, and supporting scaffolding should be carefully checked during hoisting. During installation, care should be taken to prevent damage, deformation, or injury from the binding wire ropes. Any damage or deformation should be repaired promptly.

[0056] The diagonal bracing components can be connected using high-strength bolts. The column reinforcement plates and beam reinforcement plates are fixed by welding. Since the welding is being performed on the existing structure of the existing factory building, and the welding locations are concentrated, the original components are prone to localized heat deformation. Therefore, the weld height should be controlled to 0.8 times the thickness of the thinner component being welded, but not less than half the thickness of the thinner component. Welding should be carried out gradually, and concentrated welding in one place should be avoided. Where extensive welding is required at the joints of reinforced components, after welding one component, wait for the joint to cool before welding the next component. Example 2

[0057] The difference between this embodiment and Embodiment 1 is that it provides a different structure for the column connection plate and beam connection plate.

[0058] Specifically, such as Figures 10-12 As shown, one side of the beam connecting plate 303 is provided with an upwardly bent snap-fit ​​part 12, which is fastened to the edge of the lower flange of the existing steel frame beam 2.

[0059] The snap-fit ​​part 12 allows the beam connecting plate 303 to be hung below the existing steel frame beam 2. During installation, the hanging part reduces the difficulty of suspension construction and the difficulty of aligning the connecting holes. When the diagonal brace assembly 3 is hoisted by an electric hoist, the diagonal brace assembly 3 is in a suspended state. Not only does the electric hoist need to output a continuous and strong force, but it also needs to output a stable force to ensure that the diagonal brace assembly does not sway. This places high demands on the operator's skills. After the locking part 12 is used, the diagonal brace assembly 3 can be hoisted to a specified height. The locking part 12 can then be fastened to the existing steel frame beam 2. The position of the diagonal brace rod 301 can be adjusted by sliding along the existing steel frame beam 2. At this time, although the electric hoist still needs to pull the diagonal brace assembly, it does not need to bear its weight with full force, nor does it need to worry about its swaying. The diagonal brace rod can be pulled by the electric hoist or pushed by personnel to slide towards the steel column. After the connecting holes on the beam mounting plate correspond to the connecting holes on the existing steel frame beam, the bolts can be connected. At the same time, the column connecting plate will also automatically reach the preset position, and the bolts can be connected.

[0060] In this embodiment, a single-sided snap-fit ​​part is used because it can overlap with the existing steel frame beam. If it were a double-sided snap-fit ​​part, it would be difficult to fasten the existing complete steel frame beam to its lower flange.

[0061] Furthermore, such as Figures 7-9 As shown, the column reinforcing plate 4 is an I-beam plate, and the flange of the I-beam plate abuts against the inner side of the side flange of the H-shaped steel column. This arrangement can increase the contact area between the column reinforcing plate 4 and the existing steel column 1, and at the same time provide a position for installing magnets; magnets 11 are also provided on the flange of the I-beam plate and on the column connecting plate 302.

[0062] The magnet 11 serves as a pre-connection mechanism. When the snap-fit ​​part of the beam connecting plate overlaps the existing steel frame beam and moves to the connection position, the column connecting plate 302 abuts against the outer side of the existing steel column 1. Due to the presence of the magnet 11, the column connecting plate 302 can be appropriately attracted to the existing steel column 1. Because of the constraints above and below, it can maintain its relative position, allowing for the connection of multiple bolts.

[0063] The column reinforcing plate 4 is provided with a magnet 11 that can generate an attractive force with the magnet on the column connecting plate 302, thereby pre-connecting and positioning the column reinforcing plate 4 for welding and fixing. The magnet can be a strong magnet embedded in the wing plate of the I-beam and the column connecting plate, or it can be an electromagnet installed on the wing plate of the I-beam and the column connecting plate, which can be attracted by electricity when needed and can be removed after installation.

[0064] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcing structure between a steel frame of a steel structure plant, characterized by, The system includes a bracing assembly installed between existing steel columns and existing steel frame beams. The bracing assembly includes a bracing rod and column connecting plates and beam connecting plates installed at both ends of the bracing rod. The column connecting plates are detachably connected to the existing steel columns, and the beam connecting plates are detachably connected to the existing steel frame beams. The existing steel columns are provided with column reinforcing plates in the areas where they connect to the column connecting plates, and the existing steel frame beams are provided with beam reinforcing plates in the areas where they connect to the beam connecting plates. A detachable rigid tie rod is also provided between adjacent existing steel columns located on the side wall of the factory building. The height of the rigid tie rod is not lower than the height of the column connecting plate at its location.

2. The steel structure plant building beam column steel frame inter-reinforcing structure according to claim 1, characterized in that, The existing steel column is an H-shaped steel column. The column connecting plate is connected to the side wing plate of the existing steel column. The column reinforcing plate is arranged laterally inside the existing steel column and is welded and fixed to the side wing plate and web plate of the existing steel column. A pair of column reinforcing plates are arranged at each location.

3. The steel structure plant building beam column steel frame inter-reinforcing structure according to claim 1, characterized in that, The existing steel frame beam is an I-beam structure. The beam connecting plate is connected to the lower flange of the existing steel frame beam. The beam reinforcing plate is vertically arranged inside the existing steel frame beam and welded and fixed to the upper flange, lower flange and web of the existing steel frame beam. A pair of beam reinforcing plates are arranged at each location.

4. The reinforcement structure between beams, columns, and steel frames of a steel structure factory building according to claim 1, characterized in that, The diagonal brace is a hollow round rod. Both ends of the diagonal brace are welded and fixed to the column connecting plate and the beam connecting plate, respectively. The wall thickness of the diagonal brace is not less than 5mm, the outer diameter of the diagonal brace is not less than 150mm, and the length of the diagonal brace is not less than 2.5m.

5. The reinforcement structure between beams, columns, and steel frames of a steel structure factory building according to claim 1, characterized in that, The column connecting plate and the existing steel column, as well as the beam connecting plate and the existing steel frame beam, are provided with multiple connecting holes, which are respectively connected and fixed by bolts or tie rods.

6. The reinforcement structure between beams, columns, and steel frames of a steel structure factory building according to claim 1, characterized in that, The column reinforcement plate and the beam reinforcement plate are both straight plates with a thickness of not less than 5mm.

7. The reinforcement structure between beams, columns, and steel frames of a steel structure factory building according to claim 2, characterized in that, The column reinforcing plate is an H-beam plate, and the flange of the H-beam plate abuts against the inner side of the side flange of the H-shaped steel column; magnets are also provided on the flange of the H-beam plate and the column connecting plate.

8. The reinforcement structure between beams, columns, and steel frames of a steel structure factory building according to claim 3, characterized in that, One side of the beam connecting plate is provided with an upwardly bent snap-fit ​​part, which is fastened to the edge of the lower flange of the existing steel frame beam.

9. The reinforcement structure between beams, columns, and steel frames of a steel structure factory building according to claim 1, characterized in that, The rigid tie rod between the columns is provided with end plates at both ends, and the end plates are provided with side connecting plates, which are connected to the flange plates of the existing steel columns.

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