A light steel and light concrete shear wall structure with embedded steel plates and a building

Abstract

The application relates to the technical field of building structures, in particular to a light steel and light concrete shear wall structure with embedded steel plates and a building, the shear wall structure comprising a central steel plate, end keels, vertical keels, wall panels and a concrete layer; the central steel plate is connected with two end keels at two ends respectively; two wall panels are arranged in parallel to each other, and the wall panels are fixedly connected with the end keels at two ends respectively; a plurality of vertical keels are arranged on two surfaces of the central steel plate in the vertical direction and are connected with the central steel plate and the wall panels; and the concrete layer is filled in a hollow region surrounded by the wall panels and the end keels. The vertical load is mainly borne by the vertical keels, and the central steel plate assists in bearing the vertical force. Since most of the vertical force is borne by the vertical keels, the central steel plate will not be buckled in advance under the action of the vertical load of the structure. The concrete layer restricts the out-of-plane displacement of the vertical keel component, improves the compression bearing capacity and thus improves the vertical bearing capacity of the wall.

Description

Technical Field

[0001] This invention relates to the field of building structure technology, and in particular to a lightweight steel-concrete shear wall structure and building with embedded steel plates. Background Technology

[0002] Traditional lightweight steel-concrete composite walls consist of lightweight steel framing, wall panels, and lightweight concrete filling. The steel framing is installed vertically and horizontally orthogonally, with self-tapping screws connecting the framing members and the wall panels. Lightweight steel-concrete composite structures offer advantages such as simple and rapid construction, low cost, good thermal and sound insulation, and relatively comfortable living conditions, and are currently mainly used in low-rise buildings. The lateral stiffness of the wall primarily comes from the skin effect of the wall panels and the supporting effect of the diagonal pressure bands of the lightweight concrete. However, the lateral stiffness and load-bearing capacity of the walls are relatively weak. As the number of stories increases, or as horizontal loads such as earthquakes and wind loads increase, existing lightweight steel-concrete composite structural systems may become insufficient in terms of structural stiffness and load-bearing capacity, limiting their wider application. Summary of the Invention

[0003] The purpose of this invention is to provide a lightweight steel-concrete shear wall structure and building with embedded steel plates, so as to solve at least one of the technical problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention provides a lightweight steel-concrete shear wall structure with embedded steel plates, including a central steel plate, end keels, vertical keels, wall panels and concrete layers; The central steel plate is connected to two end keels at both ends respectively; The two wall panels are arranged parallel to each other, and both ends of the wall panels are fixedly connected to the end keel; Multiple vertical keels are arranged vertically on both sides of the central steel plate and connected to the central steel plate and the wall panel; The concrete layer fills the hollow area enclosed by the wall panel and the end joists.

[0005] Furthermore, the end keel has a double U-shaped structure, including a first U-shaped keel and a second U-shaped keel; The first U-shaped keel and the second U-shaped keel have the same structure, including a first side, a second side, and a connecting bottom edge; The first side and the second side are arranged parallel to each other, and the bottom edge is perpendicularly connected between the first side and the second side; The first side is connected to the central steel plate; The second side is connected to the wall panel; The bottom edge of the connection is on the same plane as the end of the central steel plate and the end of the wall panel and is exposed on the end face of the shear wall, which facilitates the rapid assembly of adjacent shear wall units on site through end face welding or bolt connection.

[0006] Furthermore, the vertical keel has a Z-shaped cross-section structure, including a straight section in the middle, two drooping sections on both sides, and a folded edge at the bottom of the drooping sections; The straight section is attached to and connected to the central steel plate; One end of the drooping section is integrally connected to the end of the straight section, and the other end is integrally connected to the folded edge. The folded edge is attached to and connected to the inner surface of the wall panel, forming a continuous force path.

[0007] Furthermore, the straight section and the drooping section are provided with reserved pouring holes to facilitate the flow of concrete and fill the internal cavity of the wall during concrete pouring, thereby forming an integrated concrete layer.

[0008] Furthermore, multiple vertical keels are arranged in parallel and evenly spaced.

[0009] Furthermore, the vertical keels on both sides of the central steel plate are arranged in an alternating manner to enhance the balance of forces on both sides of the steel plate and the overall stability.

[0010] Furthermore, the end keel and the wall panel, the vertical keel and the wall panel, and the vertical keel and the central steel plate are all connected by connecting pairs.

[0011] Furthermore, the connecting pair is a self-tapping screw; The self-tapping screws securely connect the end keel to the wall panel, the vertical keel to the wall panel, and the vertical keel to the central steel plate.

[0012] Furthermore, the vertical keel and the wall panel are connected by an energy-dissipating return connection pair; The energy-dissipating return connection includes a first connection hole, a second connection hole, an arc-shaped fastening bolt, a bottom nut, and an elastic element; The first connecting hole is located on the wall panel and has an arc-shaped cross-section; The diameter of the end of the first connecting hole furthest from the vertical keel is larger than the diameter of the end closest to the vertical keel, forming a guide structure to facilitate the installation and positioning of the arc-shaped fastening bolt; The second connecting hole is disposed on the vertical keel and is coaxially aligned with the first connecting hole; The diameter of the first connecting hole near the end of the vertical keel is larger than the diameter of the second connecting hole; The arc-shaped fastening bolt passes through the first connecting hole and the second connecting hole; The arc-shaped fastening bolt includes an arc-shaped head and a screw section. The arc-shaped head is embedded in the large-diameter end of the first connecting hole, and the screw section passes through the second connecting hole. The bottom nut is fastened to the screw section, and the elastic element is disposed between the bottom nut and the screw section, and keeps the elastic element in a compressed state after the bottom nut is tightened.

[0013] On the other hand, this application also discloses a building with a light steel-concrete shear wall structure including the embedded steel plate.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The vertical load is mainly borne by the vertical keel, and the central steel plate assists in bearing the vertical force. Since most of the vertical force is borne by the vertical keel, the central steel plate will not buckle prematurely under the vertical load of the structure.

[0015] (2) The concrete layer can constrain the out-of-plane displacement of the vertical keel members, improve the compressive bearing capacity of the keel, and thus improve the vertical bearing capacity of the wall.

[0016] (3) The vertical keel and the filling concrete layer can constrain the out-of-plane displacement of the central steel plate under shear force, so that the steel plate can give full play to the material strength and improve the rigidity and energy dissipation capacity of the wall.

[0017] (4) Opening holes in the vertical keel is conducive to the dense pouring of lightweight concrete and can also reduce the amount of steel used.

[0018] (5) The wall frame is made of C-shaped steel or U-shaped steel, which is the same as the traditional light steel and light concrete wall. It can be connected to the adjacent light steel wall or truss beam using the existing connection method, without the need to add or redesign the connection nodes. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a front view of a lightweight steel-concrete shear wall structure with embedded steel plates disclosed in this application; Figure 2 for Figure 1 Sectional view of section 1-1; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4for Figure 2 A magnified view of a section at point B in the middle; Figure 5 for Figure 1 Sectional view of section 2-2; Figure 6 A schematic diagram of the energy-dissipating and repositioning connection in its normal state; Figure 7 This is a schematic diagram of the energy-dissipating repositioning connection in an unsteady state.

[0021] Figure label: 1-Central steel plate; 2-End keel; 3-Vertical keel; 4-Wall panel; 5-Concrete layer; 6-First U-shaped keel; 7-Second U-shaped keel; 8-First side; 9-Second side; 10-Connecting bottom edge; 11-Straight section; 12-Drooping section; 13-Folded edge; 14-Pre-reserved casting hole; 15-Self-tapping screw; 16-Energy-dissipating and returning connection pair; 17-First connecting hole; 18-Second connecting hole; 19-Arc-shaped fastening bolt; 20-Bottom nut; 21-Elastic element; 22-Arc-shaped head; 23-Screw section. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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 the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed by the present invention to further explain the specific content of the invention, and these settings can be combined or used in conjunction with each other.

[0026] The present invention will be further explained below with reference to specific embodiments.

[0027] like Figure 1-5 As shown, this embodiment provides a lightweight steel-concrete shear wall structure with embedded steel plates, including a central steel plate 1, end keels 2, vertical keels 3, wall panels 4, and a concrete layer 5. The central steel plate 1 is connected to two end keels 2 at both ends respectively; The two wall panels 4 are arranged parallel to each other, and the two ends of the wall panels 4 are respectively fixedly connected to the end keel 2; Multiple vertical keels 3 are arranged vertically on both sides of the central steel plate 1 and connected to the central steel plate 1 and the wall panel 4; The concrete layer 5 fills the hollow area enclosed by the wall panel 4 and the end keel 2.

[0028] In a preferred embodiment of this invention, the thickness of the steel plate is less than or equal to 2 mm.

[0029] In a preferred embodiment of this invention, the wall panel 4 is an OSB board or a cement pressure board.

[0030] In a preferred embodiment of this invention, the concrete layer 5 is made of polystyrene particle concrete or foamed concrete.

[0031] The shear wall structure of this application effectively enhances lateral stiffness and energy dissipation capacity through the central steel plate 1, fully leveraging the synergistic effect of steel and lightweight concrete. While maintaining lightweight characteristics, it significantly improves the load-bearing capacity and seismic ductility of the shear wall. The lightweight concrete and vertical joists 3 work together to effectively constrain the buckling deformation of the steel plate during shearing, ensuring stable load-bearing capacity under seismic loads. During normal load-bearing, the vertical joists 3 bear most of the vertical load, while the central steel plate 1 bears a smaller portion. Since most of the vertical force is borne by the vertical joists 3, the central steel plate 1 will not buckle prematurely under structural vertical loads. The concrete layer 5 constrains the out-of-plane displacement of the vertical joist 3 members, enhancing the compressive bearing capacity of the joists, thereby increasing the vertical bearing capacity of the wall. The vertical joists 3 and the concrete layer 5 constrain the out-of-plane displacement of the central steel plate 1 under shear force, allowing the central steel plate 1 to fully utilize its material strength, thus enhancing the wall's stiffness and energy dissipation capacity.

[0032] The shear wall structure in this embodiment emphasizes the coordinated work between its components. Through the rational arrangement of the vertical joists 3 and the concrete layer 5, the overall stability of the wall is effectively enhanced. The combination of the central steel plate 1 and lightweight concrete not only reduces the wall's self-weight but also significantly improves its lateral resistance, enabling the wall to exhibit superior ductility and energy dissipation capacity under extreme conditions such as earthquakes. Furthermore, the fixed connection between the end joists 2 and the wall panels 4 further strengthens the structural integrity of the wall, ensuring effective resistance to external loads during long-term use.

[0033] As a further embodiment of this example, the end keel 2 has a double U-shaped structure, including a first U-shaped keel 7 and a second U-shaped keel 8; The first U-shaped keel 7 and the second U-shaped keel 8 have the same structure, including a first side 8, a second side 9 and a connecting bottom edge 10; The first side 8 and the second side 9 are arranged parallel to each other, and the bottom edge 10 is perpendicularly connected between the first side 8 and the second side 9; The first side 8 is connected to the central steel plate 1; The second side 9 is connected to the wall panel 4; The bottom edge 10 of the connection is on the same plane as the end of the central steel plate 1 and the end of the wall panel 4 and is exposed on the end face of the shear wall, which facilitates the rapid assembly of adjacent shear wall units on site by end face welding or bolt connection.

[0034] In the shear wall structure of this application, two U-shaped keels are arranged opposite each other, with their first side 8 jointly clamping and fixing the central steel plate 1 to form a stable connection; the second side 9 is connected to the wall panels 4 on both sides respectively, enhancing the force transmission performance of the overall structure. This double U-shaped keel structure not only enhances the end restraint capacity, but also improves the connection reliability and construction convenience of the overall structure, effectively transmitting shear and tensile forces between walls, and ensuring the overall stability of the structure under seismic loading.

[0035] The aforementioned double U-shaped keel design significantly improves the mechanical properties of the shear wall ends. In practical applications, this structure effectively reduces deformation caused by external forces while ensuring a tighter and more robust connection between walls. Furthermore, since the bottom edge 10 of the connection is on the same plane as the central steel plate 1 and the ends of the wall panel 4, the wall can be directly connected to adjacent walls or truss beams during construction, eliminating the need for additional or redesigned connection nodes. This design not only meets the demands of modern architecture for efficient construction but also provides reliable protection for seismic performance, enabling the overall structure to maintain excellent stability and safety under complex stress conditions.

[0036] As a further embodiment of this example, the vertical keel 3 has a Z-shaped cross-section structure, including a straight section 11 in the middle, two drooping sections 12 on both sides, and a folded edge 13 at the bottom of the drooping section 12. The straight section 11 is attached and connected to the central steel plate 1; One end of the drooping section 12 is integrally connected to the end of the straight section 11, and the other end is integrally connected to the folded edge 13. The folded edge 13 is attached to and connected to the inner surface of the wall panel 4, forming a continuous force path.

[0037] As a further embodiment of this invention, the straight section 11 and the drooping section 12 are provided with reserved pouring holes 14, which facilitates the flow of concrete and fills the internal cavity of the wall during concrete pouring, thereby forming an integrated concrete layer 5.

[0038] In this embodiment, the reserved pouring holes 14 ensure a tight bond between the concrete layer 5 and the steel plate and keel, improving the overall structural density and collaborative performance. Furthermore, the reserved pouring holes 14 also serve to release air during construction, preventing voids during pouring and further ensuring the quality stability of the shear wall.

[0039] As a further embodiment of this example, multiple vertical keels 3 are arranged in parallel and evenly spaced.

[0040] As a further embodiment of this invention, the vertical keels 3 on both sides of the central steel plate 1 are arranged in an alternating manner to enhance the balance of forces on both sides of the steel plate and the overall stability.

[0041] In this embodiment, the staggered arrangement of the vertical keels 3 effectively disperses stress concentration under seismic loads, enhancing the ductility and energy dissipation capacity of the shear wall. Simultaneously, the U-shaped cross-section and the central steel plate 1 are tightly connected via self-tapping screws 15, forming a stable load-bearing system and ensuring a clear and continuous load transfer path. Combined with the restraining effect of the double U-shaped end keels 2, the overall structure exhibits excellent stiffness matching and coordinated deformation capacity under horizontal loads, further strengthening the connection reliability and seismic performance between shear wall units.

[0042] As a further embodiment of this example, the end keel 2 and the wall panel 4, the vertical keel 3 and the wall panel 4, and the vertical keel 3 and the central steel plate 1 are all connected by connecting pairs.

[0043] As a further embodiment of this invention, the connecting pair is a self-tapping screw 15; The self-tapping screws 15 securely connect the end keel 2 to the wall panel 4, the vertical keel 3 to the wall panel 4, and the vertical keel 3 to the central steel plate 1.

[0044] like Figure 6-7 As shown, as a further embodiment of this example, the vertical keel 3 and the wall panel 4 are connected by an energy-dissipating return connection 16. The energy-consuming return connection 16 includes a first connection hole 17, a second connection hole 18, an arc-shaped fastening bolt 19, a bottom nut 20, and an elastic element 21; The first connecting hole 17 is provided on the wall panel 4, and its cross-section is arc-shaped; The diameter of the end of the first connecting hole 17 away from the vertical keel 3 is larger than the diameter of the end closer to the vertical keel 3, forming a guide structure to facilitate the installation and positioning of the arc-shaped fastening bolt 19; The second connecting hole 18 is disposed on the vertical keel 3 and is coaxially aligned with the first connecting hole 17; The diameter of the first connecting hole 17 near the end of the vertical keel 3 is larger than the diameter of the second connecting hole 18; The arc-shaped fastening bolt 19 passes through the first connecting hole 17 and the second connecting hole 18; The arc-shaped fastening bolt 19 includes an arc-shaped head 22 and a screw section 23. The arc-shaped head 22 is embedded in the large-diameter end of the first connecting hole 17, and the screw section 23 passes through the second connecting hole 18. The bottom nut 20 is fastened to the screw section 23, and the elastic element 21 is disposed between the bottom nut 20 and the screw section 23, and the elastic element 21 is kept in a compressed state after the bottom nut 20 is fastened.

[0045] The energy-dissipating return connection 16 can partially or completely replace the self-tapping screw 15 to avoid potential problems caused by using self-tapping screws 15 at the wall panel 4. Specifically, the wall panel 4 is usually made of materials such as OSB board or gypsum board. Although it has a certain shear resistance, it is a brittle material, and its load-bearing capacity will decrease rapidly after cracking. This also rapidly reduces the restraining effect of the wall panel 4 on the internal concrete layer 5 and the vertical keel 3. Traditional self-tapping screws 5 directly connect the wall panel 4 to the vertical keel 3, and the wall panel 4 directly bears a large shear force. After the wall panel 4 cracks, the vertical keel 3 and the central steel plate 1 are prone to out-of-plane buckling due to the loss of the restraint in the out-of-plane direction of the wall panel 4. This prevents the steel from fully exerting its strength and affects the load-bearing capacity and ductility of the wall. By adopting the energy-dissipating and repositioning connection pair 16, the elastic connection between the wall panel 4 and the vertical keel 3 can release some shear deformation, greatly reducing the shear force borne by the wall panel 4, delaying the damage of the wall panel 4 in the earthquake, and more effectively restraining the out-of-plane deformation of the central steel plate 1 and the vertical keel 3, thereby enhancing the load-bearing capacity and energy dissipation capacity of the wall.

[0046] The design of the energy-dissipating and repositioning connection 16 described in this application makes the connection between the vertical keel 3 and the wall panel 4 more stable, while also possessing a certain self-resetting capability. Under seismic loading, the energy-dissipating and repositioning connection 16 allows for controllable sliding between the wall panel 4 and the vertical keel 3. The arc-shaped fastening bolt 19 slides along an arc-shaped trajectory within the first connection hole 17, while the elastic element 21 provides restoring force, dissipating seismic energy and achieving automatic repositioning of the structure after the earthquake. After the seismic loading subsides, the elastic element 21 releases its stored potential energy, pushing the arc-shaped fastening bolt 19 to slide in the opposite direction along the arc-shaped trajectory of the first connection hole 17, thereby repositioning the wall panel 4 and effectively reducing residual deformation. This connection method significantly improves the post-earthquake recoverability of the shear wall while ensuring structural safety, reduces maintenance costs, and is suitable for building systems with high requirements for post-earthquake functional continuity. Unlike conventional building structures that rely on separate energy dissipation devices or material plastic deformation for energy dissipation, this structure integrates energy dissipation, load-bearing, and automatic reset functions into the connection nodes. Through the synergistic effect of geometrically nonlinear sliding paths and elastic recovery mechanisms, it maintains rigid connections under minor earthquakes and triggers sliding energy dissipation under moderate to large earthquakes, achieving post-earthquake reset, thus combining high safety with continued usability. Although the energy dissipation capacity of each energy-dissipating and reset connection 16 is limited, its extensive distribution within the shear walls allows the entire system to accumulate and dissipate a significant amount of seismic energy, forming a distributed energy dissipation mechanism. Furthermore, compared to existing structures, this design involves only minor structural improvements in some components, which can be prefabricated in the factory, facilitating standardized production and rapid on-site assembly, significantly reducing construction difficulty and time. In addition, this connection method significantly reduces the difficulty of hole alignment during installation, improving construction efficiency. Through the above design, the overall seismic performance and durability of the structure are further enhanced.

[0047] Preferably, the elastic element 21 is a component commonly used in construction engineering, such as a spring or disc spring, that can provide elasticity. This embodiment does not impose further limitations.

[0048] On the other hand, this application also discloses a building with a lightweight steel-concrete shear wall structure including embedded steel plates.

[0049] By adopting the above technical solution, the present invention has the following beneficial effects: (1) In terms of load-bearing and seismic performance, the central steel plate 1 enhances the lateral stiffness and energy dissipation capacity. The steel and lightweight concrete work together to improve the load-bearing capacity and seismic ductility while being lightweight. The lightweight concrete and vertical keel 3 constrain the buckling deformation of the steel plate, so that it can maintain stable load-bearing under seismic load. The vertical keel 3 and concrete layer 5 constrain the out-of-plane displacement of the central steel plate 1, give full play to the material strength, and enhance the wall stiffness and energy dissipation capacity. The end keel 2 is fixedly connected to the wall panel 4 to strengthen the integrity of the wall structure and resist external loads.

[0050] (2) In terms of overall stability, the vertical keel 3 and concrete layer 5 are arranged in a reasonable manner to enhance the overall stability of the wall. The central steel plate 1 is combined with lightweight concrete to reduce the self-weight and improve the lateral resistance performance, so that the wall has better ductility and energy dissipation capacity under extreme conditions. The double U-shaped end keel 2 enhances the end constraint capacity, improves the connection reliability and construction convenience, effectively transmits shear force and tension, and ensures the overall stability under earthquake action. The vertical keel 3 is arranged in an alternating manner to disperse the concentration of earthquake stress, improve the ductility and energy dissipation capacity of the shear wall. The Z-shaped section and the central steel plate 1 form a stable force system, which strengthens the connection reliability and seismic performance.

[0051] (3) In terms of assembly and connection, the bottom edge 10 of the double U-shaped end keel 2 is on the same plane as the center steel plate 1 and the end of the wall panel 4, which facilitates the rapid assembly of adjacent shear wall units on site by end face welding or bolt connection. During construction, the wall can also be directly connected to the adjacent wall or truss beam without the need to add or redesign the connection nodes, thus meeting the requirements of efficient construction.

[0052] (4) The energy-consuming and repositioning connection 16 makes the vertical keel 3 and the wall panel 4 firmly connected and has self-resetting ability. It allows controllable sliding under earthquake action, consumes earthquake energy and realizes automatic repositioning after the earthquake, reduces residual deformation, improves post-earthquake recoverability, and reduces maintenance costs. It is suitable for building systems with high requirements for post-earthquake functional continuity.

[0053] (5) The energy dissipation, load-bearing and automatic reset functions are integrated into the energy dissipation and return connection 16 to form a distributed energy dissipation mechanism. The overall system can accumulate and dissipate a large amount of seismic energy. This improvement can be prefabricated in the factory, which facilitates standardized production and rapid on-site assembly, reduces construction difficulty and cycle, reduces the difficulty of installation and hole alignment, improves construction efficiency, and further enhances seismic performance and durability.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lightweight steel-concrete shear wall structure with embedded steel plates, characterized in that, Includes central steel plate, end keel, vertical keel, wall panel and concrete layer; The central steel plate is connected to two end keels at both ends respectively; The two wall panels are arranged parallel to each other, and both ends of the wall panels are fixedly connected to the end keel; Multiple vertical keels are arranged vertically on both sides of the central steel plate and connected to the central steel plate and the wall panel; The concrete layer fills the hollow area enclosed by the wall panel and the end joists; The end keel has a double U-shaped structure, including a first U-shaped keel and a second U-shaped keel; The first U-shaped keel and the second U-shaped keel have the same structure, including a first side, a second side, and a connecting bottom edge; The first side and the second side are arranged parallel to each other, and the bottom edge is perpendicularly connected between the first side and the second side; The first side is connected to the central steel plate; The second side is connected to the wall panel; The bottom edge of the connection is on the same plane as the end of the central steel plate and the end of the wall panel and is exposed on the end face of the shear wall, which facilitates the rapid assembly of adjacent shear wall units on site by end face welding or bolt connection; The end keel and the wall panel, the vertical keel and the wall panel, and the vertical keel and the central steel plate are all connected by connecting pairs; The vertical keel and the wall panel are connected by an energy-dissipating return connection. The energy-dissipating return connection includes a first connection hole, a second connection hole, an arc-shaped fastening bolt, a bottom nut, and an elastic element; The first connecting hole is located on the wall panel and has an arc-shaped cross-section; The diameter of the end of the first connecting hole away from the vertical keel is larger than the diameter of the end closer to the vertical keel, forming a guide structure to facilitate the installation and positioning of the arc-shaped fastening bolt; The second connecting hole is disposed on the vertical keel and is coaxially aligned with the first connecting hole; The diameter of the first connecting hole near the end of the vertical keel is larger than the diameter of the second connecting hole; The arc-shaped fastening bolt passes through the first connecting hole and the second connecting hole; The arc-shaped fastening bolt includes an arc-shaped head and a screw section. The arc-shaped head is embedded in the large-diameter end of the first connecting hole, and the screw section passes through the second connecting hole. The bottom nut is fastened to the screw section, and the elastic element is disposed between the bottom nut and the screw section, and keeps the elastic element in a compressed state after the bottom nut is tightened.

2. The lightweight steel-concrete shear wall structure with embedded steel plates according to claim 1, characterized in that, The vertical keel has a Z-shaped cross-section structure, including a straight section in the middle, two drooping sections on both sides, and a folded edge at the bottom of the drooping sections; The straight section is attached to and connected to the central steel plate; One end of the drooping section is integrally connected to the end of the straight section, and the other end is integrally connected to the folded edge. The folded edge is attached to and connected to the inner surface of the wall panel, forming a continuous force path.

3. The lightweight steel-concrete shear wall structure with embedded steel plates according to claim 2, characterized in that, The straight section and the drooping section are provided with reserved pouring holes to facilitate the flow of concrete and fill the internal cavity of the wall during concrete pouring, thereby forming an integrated concrete layer.

4. The lightweight steel-concrete shear wall structure with embedded steel plates according to claim 1, characterized in that, The vertical keel is arranged in parallel and evenly spaced.

5. The lightweight steel-concrete shear wall structure with embedded steel plates according to claim 1, characterized in that, The vertical keels on both sides of the central steel plate are arranged in an alternating manner to enhance the balance of forces on both sides of the steel plate and the overall stability.

6. A building comprising a lightweight steel-concrete shear wall structure with an embedded steel plate as described in any one of claims 1-5.

Images