Green and environment-friendly assembled steel structure frame for building and construction method thereof

Abstract

The application discloses a kind of green environmental protection building with fabricated steel structure frame and construction method, belong to environmental protection building building material technical field.The application includes vertical steel beam and horizontal steel beam, vertical steel beam is H-shaped steel, horizontal steel beam is concave steel, slidingly arranged on vertical steel beam is used for connecting horizontal steel beam with clamping connector, and position adjusting structure is arranged between clamping connector and horizontal steel beam, horizontal steel beam is transversely spliced by multiple groups of component steel beam pieces, and splicing structure is arranged between multiple groups of component steel beam pieces in horizontal steel beam, and fixed connection mechanism is arranged at the splicing of each group of component steel beam pieces of horizontal steel beam.The application is designed by split combination, is convenient to disassemble and transport, can be assembled when reaching preset building site, is convenient and efficient, and simple and practical connecting structure is arranged between split structure, can be very quickly and conveniently built steel structure frame, improves practicability and convenience.

Description

Technical Field

[0001] This invention relates to the field of environmentally friendly building materials technology, specifically to a prefabricated steel structure frame for green and environmentally friendly buildings and its construction method. Background Technology

[0002] In the modern construction field, with the increasing awareness of environmental protection and the popularization of the concept of sustainable development, green and environmentally friendly buildings have gradually become an important development direction for the construction industry. Prefabricated steel frame structures, as a green and environmentally friendly construction method, are highly favored due to their lightweight, high strength, and recyclability. However, traditional prefabricated steel frame structures still have some problems in design and construction. They often employ complex connection methods, such as welding and bolting, which are not only difficult to construct but also time-consuming and labor-intensive, hindering construction efficiency. Although prefabricated steel frame structures themselves have good environmental protection properties, the complex connection methods often generate a large amount of construction waste and noise pollution during actual construction, causing some damage to the environment. Furthermore, traditional prefabricated steel frame structures are often relatively fixed in their structural design, making it difficult to adapt to changing building needs. Once the design is completed, it is difficult to modify or adjust, which to some extent limits its application flexibility. Therefore, there is an urgent need to design a green and environmentally friendly prefabricated steel frame structure to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to provide a green and environmentally friendly prefabricated steel structure frame for buildings and a construction method. It adopts a modular design, which is easy to disassemble and transport. It can be assembled at the predetermined building site, which is convenient and efficient. Furthermore, simple and practical connection structures are set between the modular structures, which can quickly and easily build the steel structure frame, thereby improving practicality and convenience, and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A prefabricated steel structure frame for green and environmentally friendly buildings includes vertical steel beams and horizontal steel beams. The vertical steel beams are H-shaped steel, and the horizontal steel beams are concave steel. The vertical steel beams are slidably equipped with snap-fit ​​connectors for connecting the horizontal steel beams, and a position adjustment structure is provided between the snap-fit ​​connectors and the horizontal steel beams. The horizontal steel beams are formed by horizontally splicing multiple groups of separate steel beams, and splicing structures are provided between the multiple groups of separate steel beams in the horizontal steel beams. A fixing connection mechanism is provided at the splicing points of each group of separate steel beams in the horizontal steel beams.

[0006] Preferably, the vertical steel beam includes symmetrically symmetrical opening grooves on both sides. For each set of opening grooves, the inner walls on both sides of the vertical steel beam are provided with symmetrically symmetrical L-shaped vertical slots. The L-shaped vertical slots have an L-shaped cross-section. Two sets of symmetrically symmetrical integrated hook-fitting parts are fixed to one outer surface of the snap-fit ​​connector, and the hook-fitting parts are adapted to the L-shaped vertical slots. The distance between the two sets of hook-fitting parts on the snap-fit ​​connector corresponds to the width of the opening grooves on the vertical steel beam. The snap-fit ​​connector is slidably snapped into the L-shaped vertical slots on both sides of the vertical steel beam through the two sets of hook-fitting parts, and the outer surface of the snap-fit ​​connector connected to the hook-fitting parts is in contact with the outer surface of the opening side of the vertical steel beam.

[0007] Preferably, the snap-fit ​​connector is transverse, and the snap-fit ​​connector has a U-shaped opening slot for snapping the transverse steel beam, and one side of the transverse steel beam can extend out of the opening side of the snap-fit ​​connector.

[0008] Preferably, the position adjustment structure includes a first bolt hole, a bolt member, and a second bolt hole. Multiple sets of first bolt holes are vertically and equidistantly arranged on both sides of the vertical steel beam, and the position of the first bolt hole on each side of the vertical steel beam corresponds to the position of the L-shaped vertical slot. Each set of first bolt holes penetrates the L-shaped vertical slot on the vertical steel beam. Multiple sets of second bolt holes are provided on both sides of the snap-fit ​​connector, corresponding to the positions of the first bolt holes on the vertical steel beam. The second bolt holes on both sides of the snap-fit ​​connector are aligned and communicate with the first bolt holes on the vertical steel beam. A bolt member connects the second bolt holes on the snap-fit ​​connector to the communicating first bolt holes on the vertical steel beam. That is, the vertical steel beam and the snap-fit ​​connector are fixedly connected by multiple sets of second bolt holes.

[0009] Preferably, the splicing structure includes a splicing plug and a splicing slot. One end of each group of split steel beams is fixed with an integrated splicing plug, and the end of each group of split steel beams facing away from the splicing plug is provided with a splicing slot adapted to the splicing plug. The positions of the splicing plug and the splicing slot at both ends of each group of split steel beams correspond to each other. The horizontal steel beam is formed by inserting the splicing plugs and splicing slots between multiple groups of split steel beams.

[0010] Preferably, the cross-sections of the splicing plugs and splicing slots at both ends of the split steel beam are U-shaped.

[0011] Preferably, the fixed connection mechanism includes a semi-circular curved component, a fixed curved component, and a levering component. Semi-circular curved components are fixedly provided on the bottom outer wall and top outer wall of both ends of the split steel beam component, and the semi-circular curved components at both ends of the split steel beam component are symmetrical to each other. A curved cavity groove with openings at both ends is opened in the semi-circular curved component, and a matching fixed curved component is slidably engaged in the curved cavity groove of the semi-circular curved component. A limiting arc groove communicating with the curved cavity groove is opened on the outer ring side wall of the semi-circular curved component, and a levering component extending and protruding from the limiting arc groove is fixedly provided on the fixed curved component.

[0012] Preferably, the two sets of semi-circular curved parts at the joint of the two sets of separate steel beams on the horizontal steel beam can form an open-ended circular ring.

[0013] This invention provides another technical solution: a construction method for a prefabricated steel structure frame for green and environmentally friendly buildings, comprising the following steps:

[0014] S1: When assembling prefabricated steel structure frames, select the specific number of vertical and horizontal steel beams required according to the building requirements, fix multiple sets of horizontal steel beams horizontally between multiple sets of vertical steel beams, and splice different lengths of horizontal steel beams by splicing different numbers of separate steel beams. After the multiple sets of separate steel beams are horizontally inserted into each other through splicing plugs and splicing slots, the connection is completed.

[0015] S2: After splicing and fixing by operating the fixed connection mechanism at the joint of the two sets of separate steel beams, the actuating parts on the outside of the two sets of semi-circular curved parts that are close to each other and symmetrical can be rotated synchronously, so that the fixed curved parts in the two sets of semi-circular curved parts can rotate.

[0016] S3: The two sets of fixed curved parts are symmetrically inserted into the curved cavity grooves of the two sets of semi-circular curved parts. The fixed curved parts are connected in a curved shape in the two sets of semi-circular curved parts. They will fit and squeeze against the inner wall of the curved cavity grooves of the two sets of semi-circular curved parts, which can prevent the two sets of separate steel beams after docking from separating. Thus, the fixing of the multi-set separate steel beams after docking can be completed.

[0017] S4: The horizontal steel beam can be installed on the vertical steel beam. At this time, the position of the snap-fit ​​connector on the vertical steel beam can be adjusted. The snap-fit ​​connector is moved up and down along the L-shaped vertical slot opened on the vertical steel beam through two sets of hook snap-fit ​​connectors, and the multiple sets of second bolt holes through the hook snap-fit ​​connectors are aligned with the multiple sets of first bolt holes through the vertical steel beam.

[0018] S5: Insert the bolts into the first and second bolt holes to fix the snap-fit ​​connector on the vertical steel beam. Then, the horizontal steel beam can be placed horizontally between the snap-fit ​​connectors on multiple sets of vertical steel beams.

[0019] S6: The horizontal steel beams are fixedly connected to multiple sets of vertical steel beams by welding or screw fixing, thereby completing the assembly of the prefabricated steel structure frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention adopts a modular design, which is easy to disassemble and transport. It can be assembled at the pre-set construction site, which is convenient and efficient. Furthermore, simple and practical connecting structures are set between the modular structures, which can quickly and easily build the steel structure frame, improving practicality and convenience.

[0022] 2. This invention improves the overall stability and load-bearing capacity of the structure by using H-shaped steel vertical beams and concave steel horizontal beams. The sliding snap-fit ​​connector design allows the horizontal beams to be flexibly adjusted on the vertical beams, increasing the flexibility of the structural design. The position adjustment structure, through the cooperation of the first bolt hole, the bolt piece, and the second bolt hole, makes the connection between the horizontal and vertical beams more secure and reliable.

[0023] 3. The modular assembly of this invention is convenient. The horizontal steel beam is composed of multiple separate steel beam components that are connected by splicing plugs and splicing slots, realizing a modular design that makes transportation and assembly more convenient. The concave cross-section design of the splicing structure enhances the connection strength between the separate steel beam components. The fixed connection mechanism, through the cooperation of semi-circular curved components, fixed curved components, and actuating components, achieves quick and firm fixing between the separate steel beam components, greatly improving assembly efficiency.

[0024] 4. The invention enhances adaptability and scalability. By selecting different numbers of vertical and horizontal steel beams, as well as combinations of horizontal steel beams of different lengths, it can adapt to the needs of different building structures and sizes. The modular design of the structural frame allows for expansion or adjustment as needed during subsequent use, improving the adaptability and flexibility of the structure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the connection structure between the vertical steel beam and the snap-fit ​​connector of the present invention;

[0027] Figure 3 This is a schematic diagram of the snap-fit ​​connector structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the horizontal steel beam structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the split steel beam component of the present invention when it is inserted.

[0030] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0031] In the diagram: 1. Vertical steel beam; 2. Horizontal steel beam; 3. Snap-fit ​​connector; 4. Fixed connection mechanism; 5. L-shaped vertical slot; 6. Hook snap-fit ​​connector; 7. First bolt hole; 8. Bolt; 9. Second bolt hole; 10. Split steel beam component; 11. Splicing plug; 12. Splicing slot; 13. Semi-circular curved component; 14. Curved cavity groove; 15. Fixed curved component; 16. Limiting arc groove; 17. Actuating component. Detailed Implementation

[0032] 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.

[0033] Please see Figure 1-6 This invention provides a green and environmentally friendly prefabricated steel structure frame for buildings, including vertical steel beams 1 and horizontal steel beams 2. The vertical steel beams 1 are H-shaped steel, and the horizontal steel beams 2 are concave steel. A snap-fit ​​connector 3 for connecting the horizontal steel beams 2 is slidably provided on the vertical steel beams 1, and a position adjustment structure is provided between the snap-fit ​​connector 3 and the horizontal steel beams 2. The horizontal steel beams 2 are formed by horizontally splicing multiple groups of separate steel beams 10, and splicing structures are provided between the multiple groups of separate steel beams 10 in the horizontal steel beams 2. A fixing connection mechanism 4 is provided at the splicing point of each group of separate steel beams 10 in the horizontal steel beams 2.

[0034] The vertical steel beam 1 has symmetrically symmetrical opening grooves on both sides. For each set of opening grooves, the inner walls on both sides of the vertical steel beam 1 are provided with symmetrically symmetrical L-shaped vertical slots 5. The L-shaped vertical slots 5 have an L-shaped cross-section. Two sets of symmetrically integrated hook snap-fit ​​parts 6 are fixed on one side of the outer surface of the snap-fit ​​connector 3. The hook snap-fit ​​parts 6 are adapted to the L-shaped vertical slots 5. The distance between the two sets of hook snap-fit ​​parts 6 on the snap-fit ​​connector 3 corresponds to the width of the opening grooves on the vertical steel beam 1. The snap-fit ​​connector 3 is slidably snapped into the L-shaped vertical slots 5 on both sides of the vertical steel beam 1 through the two sets of hook snap-fit ​​parts 6. The outer surface of the snap-fit ​​connector 3 connecting the hook snap-fit ​​parts 6 is in contact with the outer surface of the opening side of the vertical steel beam 1.

[0035] The snap-fit ​​connector 3 is transverse, and the snap-fit ​​connector 3 has a U-shaped opening groove for snapping the horizontal steel beam 2, and one side of the horizontal steel beam 2 can extend out of the opening side of the snap-fit ​​connector 3.

[0036] The position adjustment structure includes a first bolt hole 7, a bolt piece 8, and a second bolt hole 9. Multiple sets of first bolt holes 7 are vertically and equidistantly arranged on both sides of the vertical steel beam 1, and the positions of the first bolt holes 7 on each side of the vertical steel beam 1 correspond to the positions of the L-shaped vertical slots 5. Each set of first bolt holes 7 passes through the L-shaped vertical slots 5 on the vertical steel beam 1. Multiple sets of second bolt holes 9 are opened on both sides of the hook-type connecting piece 3, corresponding to the positions of the first bolt holes 7 on the vertical steel beam 1. The second bolt holes 9 on both sides of the hook-type connecting piece 6 are aligned and connected to the first bolt holes 7 on the vertical steel beam 1. Bolt pieces 8 connect the second bolt holes 9 on the hook-type connecting piece 6 and the connected first bolt holes 7 on the vertical steel beam 1. That is, the vertical steel beam 1 and the hook-type connecting piece 3 are fixedly connected by multiple sets of second bolt holes 9.

[0037] The splicing structure includes a splicing plug 11 and a splicing slot 12. One end of each set of separate steel beams 10 is fixed with an integrated splicing plug 11, and the end of each set of separate steel beams 10 facing away from the splicing plug 11 is provided with a splicing slot 12 that is compatible with the splicing plug 11. The positions of the splicing plug 11 and the splicing slot 12 at both ends of each set of separate steel beams 10 are corresponding. The horizontal steel beam 2 is formed by inserting the splicing plug 11 and the splicing slot 12 between the multiple sets of separate steel beams 10. The cross-section of the splicing plug 11 and the splicing slot 12 at both ends of the separate steel beams 10 is U-shaped. Different lengths of horizontal steel beams 2 can be spliced ​​according to the building requirements. That is, different lengths of horizontal steel beams 2 are spliced ​​by splicing different numbers of separate steel beams 10. After the multiple sets of separate steel beams 10 are inserted horizontally into each other through the splicing plug 11 and the splicing slot 12, the connection is completed. Then, the splicing is fixed by operating the fixing connection mechanism 4 at the connection point of the two sets of separate steel beams 10.

[0038] The fixed connection mechanism 4 includes a semi-circular curved part 13, a fixed curved part 15, and a lever 17. The bottom outer wall and top outer wall of both ends of the split steel beam 10 are fixed with semi-circular curved parts 13, and the semi-circular curved parts 13 at both ends of the split steel beam 10 are symmetrical to each other. The semi-circular curved part 13 has a curved cavity groove 14 with openings at both ends, and the semi-circular curved part 13 is slidably engaged with the fixed curved part 15 in the curved cavity groove 14. The outer ring side wall of the semi-circular curved part 13 has a limiting arc groove 16 that communicates with the curved cavity groove 14. The fixed curved part 15 is fixed with a lever 17 that extends out of the limiting arc groove 16. The two sets of semi-circular curved parts 13 on the horizontal steel beam 2 corresponding to the joint of the two sets of split steel beam 10 can form a circular ring with openings on both sides.

[0039] Working principle: When assembling prefabricated steel structure frames, the required number of vertical steel beams 1 and horizontal steel beams 2 can be selected according to building requirements. Then, multiple sets of horizontal steel beams 2 are horizontally fixed between multiple sets of vertical steel beams 1. At this point, horizontal steel beams 2 of different lengths can be spliced ​​according to building requirements, i.e., different lengths of horizontal steel beams 2 are spliced ​​together using different numbers of separate steel beam components 10. After the multiple sets of separate steel beam components 10 are horizontally inserted into each other using splicing plugs 11 and splicing slots 12, the connection is completed. Then, by operating two... After the fixed connection mechanism 4 at the joint of the component steel beam 10 is spliced ​​and fixed, the actuating member 17 on the outer side of the two sets of semi-circular curved members 13 that are close to each other and symmetrical can be rotated synchronously, so that the fixed curved member 15 in the two sets of semi-circular curved members 13 rotates, and the symmetrical ends of the two sets of fixed curved members 15 are respectively inserted into the curved cavity grooves 14 opened in the two sets of semi-circular curved members 13. The fixed curved member 15 is connected to the two sets of semi-circular curved members 13 in a curved shape, and will be connected to the two sets of semi-circular curved members 14. The inner wall of the curved cavity groove 14 is pressed and squeezed to prevent the two groups of separate steel beams 10 from separating after docking. This allows for the fixing of the multi-group separate steel beams 10 after docking, thus completing the assembly of the horizontal steel beam 2. The horizontal steel beam 2 can then be installed on the vertical steel beam 1. At this point, the position of the snap-fit ​​connector 3 on the vertical steel beam 1 can be adjusted. The snap-fit ​​connector 3 is moved up and down along the L-shaped vertical slot 5 on the vertical steel beam 1 by two sets of bent hook snap-fit ​​pieces 6, and the bent hook snap-fit ​​pieces 6 are moved upwards through... Align the multiple sets of second bolt holes 9 with the multiple sets of first bolt holes 7 on the vertical steel beam 1. Then, insert bolts 8 into the first bolt holes 7 and second bolt holes 9 to fix the snap-fit ​​connector 3 onto the vertical steel beam 1. The operation is simple and quick. Then, place the horizontal steel beam 2 between the snap-fit ​​connectors 3 on the multiple sets of vertical steel beams 1. Finally, fix the horizontal steel beam 2 to the multiple sets of vertical steel beams 1 by welding or screw fixing, thereby completing the assembly of the prefabricated steel structure frame.

[0040] In summary, this invention adopts a modular design, which is easy to disassemble and transport. It can be assembled at the predetermined construction site, which is convenient and efficient. Furthermore, each modular structure is equipped with a simple and practical connecting structure, which allows for the very quick and convenient construction of the steel structure frame, thus improving practicality and convenience.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A prefabricated steel structure frame for green and environmentally friendly buildings, characterized in that: The system includes a vertical steel beam (1) and a horizontal steel beam (2). The vertical steel beam (1) is an H-beam, and the horizontal steel beam (2) is a concave steel beam. A snap-fit ​​connector (3) for connecting the horizontal steel beam (2) is slidably provided on the vertical steel beam (1). A position adjustment structure is provided between the snap-fit ​​connector (3) and the horizontal steel beam (2). The horizontal steel beam (2) is formed by horizontally splicing multiple groups of separate steel beams (10). A splicing structure is provided between the multiple groups of separate steel beams (10) in the horizontal steel beam (2). A fixed connection mechanism (4) is provided at the splicing point of each group of separate steel beams (10) in the horizontal steel beam (2). The vertical steel beam (1) has relatively symmetrical opening grooves on both sides. The inner walls of each set of opening grooves of the vertical steel beam (1) are provided with mutually symmetrical L-shaped vertical slots (5). The L-shaped vertical slots (5) have an L-shaped cross-section. Two sets of mutually symmetrical integrated hook snap-fit ​​parts (6) are fixed on one side of the outer surface of the snap-fit ​​connector (3). The hook snap-fit ​​parts (6) are adapted to the L-shaped vertical slots (5). The distance between the two sets of hook snap-fit ​​parts (6) on the snap-fit ​​connector (3) corresponds to the width of the opening groove on the vertical steel beam (1). The snap-fit ​​connector (3) is slidably snapped into the L-shaped vertical slots (5) on both sides of the vertical steel beam (1) by the two sets of hook snap-fit ​​parts (6). The outer surface of the snap-fit ​​connector (3) connected to the hook snap-fit ​​parts (6) is in contact with the outer surface of the opening side of the vertical steel beam (1). The splicing structure includes a splicing plug (11) and a splicing slot (12). One end of each set of split steel beams (10) is fixed with an integrated splicing plug (11), and each set of split steel beams (10) has a splicing slot (12) adapted to the splicing plug (11) at the end opposite to the splicing plug (11). The positions of the splicing plug (11) and the splicing slot (12) at both ends of each set of split steel beams (10) are corresponding. The horizontal steel beam (2) is formed by inserting the splicing plug (11) and the splicing slot (12) between multiple sets of split steel beams (10). The fixed connection mechanism (4) includes a semi-circular curved part (13), a fixed curved part (15), and a toggle part (17). The bottom outer wall and top outer wall of both ends of the split steel beam (10) are fixed with semi-circular curved parts (13), and the semi-circular curved parts (13) at both ends of the split steel beam (10) are symmetrical to each other. The semi-circular curved part (13) has a curved cavity groove (14) with openings at both ends. The semi-circular curved part (13) is slidably engaged with the fixed curved part (15) in the corresponding curved cavity groove (14). The outer ring side wall of the semi-circular curved part (13) has a limiting arc groove (16) that communicates with the curved cavity groove (14). The fixed curved part (15) is fixed with a toggle part (17) that extends out of the limiting arc groove (16).

2. The prefabricated steel structure frame for green and environmentally friendly buildings according to claim 1, characterized in that: The snap-fit ​​connector (3) is transverse, and the snap-fit ​​connector (3) has a U-shaped opening groove for snapping the horizontal steel beam (2), and one side of the horizontal steel beam (2) extends out of the opening side of the snap-fit ​​connector (3).

3. The prefabricated steel structure frame for green and environmentally friendly buildings according to claim 1, characterized in that: The position adjustment structure includes a first bolt hole (7), a bolt (8), and a second bolt hole (9). Multiple sets of first bolt holes (7) are arranged vertically and equidistantly on both sides of the vertical steel beam (1). The positions of the first bolt holes (7) on each side of the vertical steel beam (1) correspond to the positions of the L-shaped vertical slots (5). Each set of first bolt holes (7) passes through the L-shaped vertical slots (5) on the vertical steel beam (1). The snap-fit ​​connector (3) has hook snap-fit ​​parts (6) on both sides. Multiple sets of second bolt holes (9) are provided at the positions corresponding to the first bolt hole (7) on the vertical steel beam (1), and the second bolt holes (9) on the hook snap fasteners (6) on both sides are aligned and connected with the first bolt hole (7) on the vertical steel beam (1). The second bolt hole (9) on the hook snap fasteners (6) and the first bolt hole (7) on the vertical steel beam (1) are connected by bolts (8), that is, the vertical steel beam (1) and the snap fasteners (3) are fixedly connected by multiple sets of second bolt holes (9).

4. The prefabricated steel structure frame for green and environmentally friendly buildings according to claim 3, characterized in that: The cross-sections of the splicing plugs (11) and splicing slots (12) at both ends of the split steel beam (10) are all U-shaped.

5. A prefabricated steel structure frame for green and environmentally friendly buildings according to claim 4, characterized in that: The two sets of semi-circular curved parts (13) at the joint of the two sets of separate steel beam parts (10) on the horizontal steel beam (2) form an open-ended circular ring on both sides.

6. The construction method of a prefabricated steel structure frame for green and environmentally friendly buildings according to claim 5, characterized in that: Includes the following steps: S1: When assembling prefabricated steel structure frames, select the specific number of vertical steel beams (1) and horizontal steel beams (2) required according to the building requirements, fix multiple sets of horizontal steel beams (2) horizontally between multiple sets of vertical steel beams (1), and splice different lengths of horizontal steel beams (2) by different numbers of separate steel beam pieces (10). After the multiple sets of separate steel beam pieces (10) are horizontally inserted into each other through splicing plugs (11) and splicing slots (12), the docking is completed. S2: After splicing and fixing by operating the fixed connection mechanism (4) at the joint of the two sets of separate steel beams (10), the actuating parts (17) on the outside of the two sets of semi-circular curved parts (13) that are close to each other and symmetrical are rotated synchronously, so that the fixed curved parts (15) in the two sets of semi-circular curved parts (13) rotate. S3: Insert one end of each of the two sets of fixed curved parts (15) into the curved cavity groove (14) opened by the two sets of semi-circular curved parts (13), and the fixed curved parts (15) are connected in a curved shape in the two sets of semi-circular curved parts (13). They will fit and squeeze against the inner wall of the curved cavity groove (14) opened by the two sets of semi-circular curved parts (13), preventing the two sets of separate steel beam parts (10) after docking from separating from each other, thereby completing the fixing of the multi-set separate steel beam parts (10) after docking; S4: Install the horizontal steel beam (2) on the vertical steel beam (1). At this time, adjust the position of the snap-fit ​​connector (3) on the vertical steel beam (1). Move the snap-fit ​​connector (3) up and down along the L-shaped vertical slot (5) opened on the vertical steel beam (1) through two sets of hook snap-fit ​​connectors (6), and align the multiple sets of second bolt holes (9) on the hook snap-fit ​​connector (6) with the multiple sets of first bolt holes (7) on the vertical steel beam (1). S5: Insert the bolt (8) into the first bolt hole (7) and the second bolt hole (9) to fix the snap-fit ​​connector (3) on the vertical steel beam (1). Then place the horizontal steel beam (2) on multiple sets of vertical steel beams (1) between the snap-fit ​​connectors (3). S6: The horizontal steel beam (2) is fixedly connected to multiple sets of vertical steel beams (1) by welding or screw fixing, thereby completing the assembly of the prefabricated steel structure frame.

Images