Fabricated steel frame composite shear wall structure

Abstract

An assembled steel frame combined shear wall structure, comprising a wall unit steel frame, the wall unit steel frame comprising wall unit steel frame columns and wall unit connecting beams, the opening sides of the wall unit steel frame columns on both sides are arranged opposite to each other, the top of the wall unit steel frame columns on both sides is connected through a top connecting beam, the bottom is provided with a bottom connecting beam connection, the wall unit steel frame columns on both sides are connected to each other through a plurality of wall unit connecting beams arranged between the top connecting beam and the bottom connecting beam, and the positions of the wall unit connecting beams correspond to the positions of each floor slab; horizontal distribution bars and vertical distribution bars are uniformly arranged between the wall unit steel frame columns on both sides, the vertical distribution bars pass through the middle of the wall unit connecting beams and are welded with the wall unit connecting beams, and the two ends of the horizontal distribution bars are welded with the wall unit steel frame columns on both sides respectively, the device is provided with less steel, is convenient to process and manufacture, has a higher assembly degree on site, is convenient to install on site, does not affect process crossing, and is easy to reform and adapt to individualized decoration in the later period.

Description

Technical Field

[0001] This invention relates to a prefabricated steel frame composite shear wall structure. Background Technology

[0002] The main structure of a building includes both concrete and steel structures. Traditional concrete structures suffer from drawbacks such as the need for extensive on-site labor, high timber usage, and significant pollution from wastewater and dust. Steel structures, on the other hand, utilize prefabricated construction, saving considerable labor and generating less construction waste, thus being energy-efficient and environmentally friendly. However, steel columns in steel structures are often rectangular, which can cause inconvenience in residential building layouts due to protruding corners. Many residential projects also employ steel tube shear wall systems. These systems combine the advantages of concrete shear walls (flexible layout and good lateral stiffness) with the high degree of industrialization in steel structure fabrication. However, existing steel tube shear wall systems, constructed entirely of welded steel tubes, result in high steel consumption and significantly higher costs than conventional concrete structures. Furthermore, the extensive welding and processing of this system makes it prone to deformation and correction, leading to a much longer processing cycle than conventional steel structures. Shear walls have numerous small cavities, requiring concrete to be poured into each one individually during on-site construction. Furthermore, the concrete often fails to fully compact, leading to discrepancies between the design calculations and actual conditions, posing significant safety hazards. Additionally, because the shear walls are entirely steel structures, rapid construction techniques such as climbing scaffolds cannot be used for the main scaffolding, making scaffolding construction extremely difficult. Moreover, steel pipe shear walls present significant challenges in pre-installing pipelines, making later modifications impossible. Furthermore, the inability to simultaneously conduct civil engineering and steel structure construction results in substantial downtime and slow construction progress. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a prefabricated steel frame combined shear wall structure that features reasonable stress distribution, convenient processing and manufacturing, high construction efficiency, low steel consumption and cost, easy pre-embedding of water and electricity pipelines, and subsequent adjustability.

[0004] To achieve the above objectives, this invention first proposes a prefabricated steel-frame composite shear wall structure, comprising wall unit steel frames, wherein the wall unit steel frames include wall unit steel frame columns and wall unit connecting beams.

[0005] The steel frame columns of the wall units on both sides are arranged opposite each other on the open sides. The top of the steel frame columns of the wall units on both sides is connected by a top connecting beam, and the bottom is connected by a bottom connecting beam. Multiple wall unit connecting beams are set between the top connecting beam and the bottom connecting beam of the steel frame columns of the wall units on both sides, and the position of the wall unit connecting beam corresponds to the position of each floor slab. Horizontal and vertical distribution bars are evenly arranged between the steel frame columns of the wall units on both sides. The vertical distribution bars pass through the middle of the wall unit connecting beam and are welded to the wall unit connecting beam. The two ends of the horizontal distribution bars are welded to the steel frame columns of the wall units on both sides respectively.

[0006] In this embodiment, the wall unit steel frame column is a channel-shaped steel column composed of three steel plates, two of which are flush with the wall surface and are the first steel plate, and one steel plate is perpendicular to the wall surface and is the second steel plate.

[0007] In this embodiment, the top connecting beam, wall unit connecting beam, and bottom connecting beam each include two horizontally arranged vertical connecting steel plates. These vertical connecting steel plates connect the steel frame columns of the wall units on both sides. Vertically arranged vertical stiffening plates are evenly distributed between the two vertical connecting steel plates, dividing the space between them into multiple vertically penetrating cavities. Each cavity contains vertically distributed reinforcing bars, which are welded to the vertical connecting steel plates. The vertical stiffening plates of the connecting beams are used to improve the out-of-plane stiffness of the vertical connecting steel plates.

[0008] In this embodiment, a horizontal support plate is also provided on the outside of the vertical connecting steel plate of the top connecting beam and the wall unit connecting beam. The horizontal support plate is arranged parallel to the vertical connecting steel plate. The middle part of the horizontal support plate is welded to the outside of the vertical connecting steel plate, and the two ends of the horizontal support plate are welded to the outside of the wall unit steel frame column.

[0009] In this embodiment, small stiffening plates are uniformly welded between the lower part of the horizontal support plate and the vertical connecting steel plate. These small stiffening plates are used to increase the rigidity of the horizontal support plate, ensuring the safety and reliability of the floor slab construction.

[0010] In this embodiment, water and electricity pipelines are pre-embedded in the steel frame of the wall unit, in the cavity between the horizontal and vertical distribution bars, and aluminum templates are arranged to close the openings on both sides of the steel frame of the wall unit.

[0011] In this embodiment, the bottom of the steel frame column of the wall unit is rigidly connected to the ground foundation through anchor bolt embedded parts. The ground foundation is provided with vertical dowel bars between the anchor bolt embedded parts on both sides, which are connected to the horizontal and vertical distribution bars between the steel frame columns of the wall units on both sides.

[0012] In this embodiment, the steel frames of adjacent wall units are welded together by steel connecting beams, which are welded to the steel frame columns of the wall units at positions corresponding to the connecting beams of the wall units.

[0013] In this embodiment, horizontal stiffening plates are provided inside the steel frame column of the wall unit and at the locations corresponding to the upper and lower flanges of the steel connecting beam. The three sides of the horizontal stiffening plates are welded to the inner wall of the steel frame column of the wall unit. The thickness of the horizontal stiffening plates is not less than the thickness of the flanges of the steel connecting beam. Ventilation holes are uniformly opened along the longitudinal direction on the horizontal stiffening plates.

[0014] In this embodiment, ear plates are welded between the upper and lower flanges of the steel connecting beam and the steel frame of the wall unit, and studs are evenly arranged on the upper part of the steel connecting beam.

[0015] The structure described above has the following advantages:

[0016] 1. Saves steel consumption, economical and fast;

[0017] 2. On-site assembly is more efficient and convenient, making construction more convenient and efficient;

[0018] 3. The steel frame of the wall unit is easy to manufacture in the factory, the product quality is reliable, and it saves a lot of labor.

[0019] 4. Water and electricity pipelines are easy to pre-buried and convenient for later modification;

[0020] 5. The construction scaffolding can adopt climbing scaffolding with conventional shear wall structure, which greatly improves construction efficiency;

[0021] 6. The concrete is easy to pour, making it safer and more reliable;

[0022] 7. Facilitates continuous and cross-operation of civil engineering and steel structure, reducing the likelihood of workers being idle.

[0023] In summary, this device uses less steel, saving costs. Moreover, it is easy to manufacture in the factory, has reliable quality, and can be easily assembled on-site, making construction convenient and efficient. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the steel frame of the wall unit and the reinforcing steel bars of the present invention;

[0025] Figure 2 This is a partial schematic diagram of the steel frame of the wall unit of the present invention;

[0026] Figure 3 This is a diagram of the steel frame combined shear wall assembly of the present invention;

[0027] Figure 4 This is a horizontal cross-sectional view of the steel frame node of the wall unit of the present invention;

[0028] Figure 5 This is a detailed drawing of the column base of the present invention;

[0029] Figure 6 The present invention provides the installation process for a steel-framed composite shear wall. Figure 1 —Installation at the base of the wall;

[0030] Figure 7 The present invention provides the installation process for a steel-framed composite shear wall. Figure 2 —Installation of aluminum formwork on the first floor;

[0031] Figure 8 The present invention provides the installation process for a steel-framed composite shear wall. Figure 3 —Lay a second-layer steel truss floor slab;

[0032] Figure 9 The present invention provides the installation process for a steel-framed composite shear wall. Figure 4 —First floor concrete pouring;

[0033] Figure 10 The present invention provides the installation process for a steel-framed composite shear wall. Figure 5 —Install the second layer of aluminum formwork and remove the first layer of aluminum formwork.

[0034] In the attached diagram: 1. Steel frame column of wall unit; 2. Connecting beam of wall unit; 2a. Bottom connecting beam; 2b. Top connecting beam; 3. Horizontal distribution reinforcement; 4. Vertical distribution reinforcement; 5. Concrete; 6. Horizontal stiffening plate of node; 7. Draping plate; 8. Aluminum formwork; 9. Steel truss floor deck; 10. Negative reinforcement of floor slab; 11. Vertical connecting steel plate; 12. Horizontal support plate; 13. Vertical stiffening plate of connecting beam; 14. Small stiffening plate; 15. Dowel bar; 16. Steel connecting beam; 17. Ear plate; 18. Stud. Detailed Implementation

[0035] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0037] like Figures 1 to 10As shown, the present invention provides a prefabricated steel frame composite shear wall structure, including a wall unit steel frame. The wall unit steel frame includes wall unit steel frame columns 1 and wall unit connecting beams 2. The wall unit steel frame column 1 is a channel-shaped steel column composed of three steel plates, of which two steel plates are flush with the wall surface as the first steel plate, and one steel plate is perpendicular to the wall surface as the second steel plate. The wall unit steel frame columns 1 on both sides are arranged opposite to each other on the open side. The top of the wall unit steel frame columns 1 on both sides is connected by a top connecting beam 2b, and the bottom is connected by a bottom connecting beam 2a. Multiple wall unit connecting beams are arranged between the top connecting beam 2b and the bottom connecting beam 2a on both sides of the wall unit steel frame columns 1, and the position of the wall unit connecting beam corresponds to the position of each floor slab. Inside the steel frame column 1 of the wall unit, at the connection points of the top connecting beam 2b, the wall unit connecting beam 2, and the bottom connecting beam 2a, horizontal stiffening plates 6 are installed at positions corresponding to the upper and lower flanges of the steel connecting beam 16. The three sides of the horizontal stiffening plate 6 are welded to the inner wall of the steel frame column 1 of the wall unit. The thickness of the horizontal stiffening plate 6 is not less than the thickness of the flange of the steel connecting beam 16. Ventilation holes are evenly spaced along the longitudinal direction on the horizontal stiffening plate 6 to prevent concrete from failing to fill at these locations.

[0038] The top connecting beam 2b and the wall unit connecting beam 2 have the same structure, including two horizontally arranged vertical connecting steel plates 11 and a horizontal support plate 12 set on the outside of the vertical connecting steel plates 11. The vertical connecting steel plates 11 connect the steel frame columns 1 of the two wall units. The two ends of the vertical connecting steel plates 11 are respectively welded to the opposite side of the first steel plate. The middle part of the horizontal support plate 12 is welded to the outside of the vertical connecting steel plates 11, and the two ends of the horizontal support plate 12 are welded to the outside of the first steel plate. The two vertical connecting steel plates 11 are evenly spaced. Vertical stiffening plates 13 of the connecting beam are arranged vertically. The length of the vertical stiffening plates 13 of the connecting beam matches the width of the vertical connecting steel plate 11. The two sides of the vertical stiffening plates 13 of the connecting beam are welded to the inner wall of the vertical connecting steel plate 11. The vertical stiffening plates 13 of the connecting beam are used to improve the out-of-plane stiffness of the vertical connecting steel plate 11. Small stiffening plates 14 are uniformly welded between the lower part of the horizontal support plate 12 and the vertical connecting steel plate 11. The small stiffening plates 14 are used to improve the stiffness of the horizontal support plate 12 to ensure the safety and reliability of the floor slab construction.

[0039] The bottom connecting beam 2a does not require a horizontal support plate; it is only used to improve the overall rigidity of the wall unit steel frame to prevent deformation of the wall steel frame during transportation.

[0040] Horizontal distribution bars 3 and vertical distribution bars 4 are evenly arranged between the wall unit steel frame columns 1 on both sides. The horizontal distribution bars 3 and vertical distribution bars 4 are fixed together with the wall unit steel frame columns 1 by spot welding. Inside the wall unit steel frame column 1, on the slotted side, there are evenly arranged gusset plates 7 along the length direction. The gusset plates 7 are used to strengthen the torsional stiffness of the channel steel column and the local stability of the steel plate.

[0041] In use, the connector at the bottom of the steel frame column 1 of the wall unit is rigidly connected to the foundation through the anchor bolt embedded part 19. The ground foundation is provided with vertical dowel bars 15 between the anchor bolt embedded parts on both sides, which are connected to the horizontal and vertical distribution bars between the steel frame columns of the wall units on both sides. Then, the steel frames of adjacent wall units are welded together through steel connecting beams 16. Ear plates 17 are provided at the upper and lower flange nodes of the steel connecting beams 16, and studs 18 are evenly arranged on the upper part of the steel connecting beams 16.

[0042] After the wall unit steel frame is installed, water and electricity pipelines are pre-embedded in the cavity of the wall. After the water and electricity pipelines are pre-embedded, aluminum formwork 8 is placed on the openings on both sides of the cavity at the first floor position of the wall unit steel frame to close it. The aluminum formwork 8 is fixedly connected to the wall unit steel frame with bolts. Then, steel truss floor slab 9 is placed on the horizontal support plate 12 at the corresponding position on the second floor, and floor slab negative reinforcement 10 is placed at the wall overlap. Steel reinforcement holes are pre-drilled on the wall unit steel frame column 1 for placing floor slab negative reinforcement. After the above work is completed, concrete 5 is poured into the first floor wall and the second floor slab. The same operation is then carried out on the upper floors one by one.

[0043] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A prefabricated steel frame composite shear wall structure, characterized in that: The system includes a wall unit steel frame, which comprises wall unit steel frame columns and wall unit connecting beams. The wall unit steel frame columns on both sides are arranged opposite each other on their open sides. The tops of the wall unit steel frame columns on both sides are connected by a top connecting beam, and the bottoms are connected by a bottom connecting beam. Multiple wall unit connecting beams are provided between the top and bottom connecting beams of the wall unit steel frame columns on both sides, and the positions of the wall unit connecting beams correspond to the positions of each floor slab. Horizontal and vertical distribution bars are evenly distributed between the wall unit steel frame columns on both sides. The vertical distribution bars pass through the middle of the wall unit connecting beams and are welded to the wall unit connecting beams. The two ends of the horizontal distribution bars are respectively welded to the wall unit steel frame columns on both sides. The wall unit steel frame column is a channel-shaped steel column composed of three steel plates, two of which are flush with the wall surface as the first steel plate, and one steel plate is perpendicular to the wall surface as the second steel plate; The top connecting beam, wall unit connecting beam, and bottom connecting beam each include two horizontally arranged vertical connecting steel plates. The vertical connecting steel plates connect the steel frame columns of the wall units on both sides. Vertically arranged vertical stiffening plates of the connecting beam are evenly arranged between the two vertical connecting steel plates. The vertical stiffening plates of the connecting beam divide the space between the two vertical connecting steel plates into multiple vertical through cavities. Each cavity is filled with vertical distribution ribs, which are welded to the vertical connecting steel plates.

2. The prefabricated steel frame composite shear wall structure according to claim 1, characterized in that: A horizontal support plate is also provided on the outside of the vertical connecting steel plate of the top connecting beam and the wall unit connecting beam. The horizontal support plate is arranged parallel to the vertical connecting steel plate. The middle part of the horizontal support plate is welded to the outside of the vertical connecting steel plate, and the two ends of the horizontal support plate are welded to the outside of the wall unit steel frame column.

3. The prefabricated steel frame composite shear wall structure according to claim 2, characterized in that: Small stiffening plates are uniformly welded between the lower part of the horizontal support plate and the vertical connecting steel plate.

4. The prefabricated steel frame composite shear wall structure according to claim 1, characterized in that: Water and electricity pipelines are pre-embedded in the steel frame of the wall unit, in the cavity between the horizontal and vertical distribution bars, and aluminum templates are arranged to close the openings on both sides of the steel frame of the wall unit.

5. The prefabricated steel frame composite shear wall structure according to claim 1, characterized in that: The bottom of the steel frame column of the wall unit is rigidly connected to the ground foundation through anchor bolts. Vertical reinforcing bars are set between the anchor bolts on both sides of the ground foundation. The vertical reinforcing bars are connected to the horizontal and vertical distribution bars between the steel frame columns of the wall units on both sides.

6. The prefabricated steel frame composite shear wall structure according to any one of claims 1 to 5, characterized in that: The steel frames of adjacent wall units are connected by steel connecting beams, which are welded to the steel frame columns of the wall units at positions corresponding to the connecting beams of the wall units.

7. The prefabricated steel frame composite shear wall structure according to claim 6, characterized in that: Horizontal stiffening plates are installed inside the steel frame column of the wall unit and at the locations corresponding to the upper and lower flanges of the steel connecting beam. The three sides of the horizontal stiffening plate are welded to the inner wall of the steel frame column of the wall unit. The thickness of the horizontal stiffening plate is not less than the thickness of the flange of the steel connecting beam. Ventilation holes are evenly opened along the longitudinal direction on the horizontal stiffening plate.

8. The prefabricated steel frame composite shear wall structure according to claim 7, characterized in that: Ear plates are welded between the upper and lower flanges of the steel connecting beam and the steel frame of the wall unit, and studs are evenly arranged on the upper part of the steel connecting beam.

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