Mechanism type light steel keel composite wallboard

Abstract

The application discloses a mechanism type light steel keel composite wallboard, which comprises a prefabricated wallboard, a first cross beam, a second cross beam, a wallboard connecting piece and a keel; the horizontal rod and the longitudinal rod of the keel are rotationally connected at the connecting joint of the horizontal rod and the longitudinal rod; the first cross beam is arranged directly above the second cross beam, the upper end of the keel is rotationally connected with the first cross beam through the wallboard connecting piece, and the lower end of the keel is rotationally connected with the second cross beam through the wallboard connecting piece; the upper end of the prefabricated wallboard is fixedly connected with the horizontal rod of the upper part of the keel, and the lower end of the prefabricated wallboard is slidingly connected with the keel, and the sliding direction is the horizontal direction; or the lower end of the prefabricated wallboard is fixedly connected with the horizontal rod of the lower part of the keel, and the upper end of the prefabricated wallboard is slidingly connected with the keel, and the sliding direction is the horizontal direction. The mechanism type light steel keel composite wallboard can horizontally dislocate under the action of an earthquake, the whole structure will not be damaged, and the repair cost after the earthquake is reduced.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and to structural forms in steel structures that use square steel tube columns and H-beams, such as: steel frame structure, steel frame-support structure, steel frame-ductile wall panel structure, tube structure, etc., specifically to a mechanical light steel keel composite wall panel. Background Technology

[0002] With ongoing in-depth research into steel structure buildings, their seismic performance has significantly improved. However, the damage to non-structural components under seismic loads is often overlooked. Yet, judging from the consequences of numerous earthquakes both domestically and internationally, damage to non-structural components severely impacts the functionality of buildings. Improper handling can lead to collapse during earthquakes, causing secondary injuries to occupants, and even affecting the main structure. Furthermore, as people's demands for working and living environments increase, non-structural components account for a larger proportion of total building investment. Severe damage to non-structural components can result in significant economic losses. Therefore, the integrity of non-structural components under seismic loads should be given serious attention by designers. In light of the above, research on the rationalization of building envelope construction is of great significance to the development of steel structure buildings. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and propose a structural light steel keel composite wall panel. The structural light steel keel composite wall panel of this invention can undergo horizontal displacement under earthquake action without damage to the overall structure, thereby reducing the repair costs after an earthquake.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A structural light steel keel composite wall panel includes a prefabricated wall panel, a first crossbeam, a second crossbeam, wall panel connectors, and a keel.

[0006] The transverse and longitudinal bars of the keel are rotatably connected at the connection node between the transverse and longitudinal bars;

[0007] The first crossbeam is located directly above the second crossbeam. The upper end of the keel is rotatably connected to the first crossbeam through a wall panel connector, and the lower end of the keel is rotatably connected to the second crossbeam through a wall panel connector.

[0008] The upper end of the precast wall panel is fixedly connected to the horizontal bar at the top of the keel, and the lower end of the precast wall panel is slidably connected to the keel in the horizontal direction; or the lower end of the precast wall panel is fixedly connected to the horizontal bar at the bottom of the keel, and the upper end of the precast wall panel is slidably connected to the keel in the horizontal direction.

[0009] Preferably, the precast wall panel includes a plurality of basic wall panel units, and the plurality of basic wall panel units are spliced ​​together to form the precast wall panel;

[0010] Each basic wall panel unit has a first groove on its upper end face and a first protrusion on its lower end face that can be embedded in the first groove; each basic wall panel unit has a second groove on one side and a second protrusion on the other side that is adapted to the second groove.

[0011] The keel's horizontal bars include a first horizontal bar. The keel is provided with a first horizontal bar at the upper end of each foundation wall panel unit, which is fixedly connected to the upper end of the foundation wall panel unit. The lower end of the precast wall panel as a whole is slidably connected to the keel.

[0012] Alternatively, the keel may have a first transverse rod fixedly connected to the lower end of each basic wall panel unit at the lower end of the basic wall panel unit, and the upper end of the precast wall panel as a whole may be slidably connected to the keel.

[0013] Preferably, for each of the basic wall panel units, when the upper end of the basic wall panel unit is fixedly connected to the keel, the lower end of the basic wall panel unit is slidably connected to the keel; when the lower end of the basic wall panel unit is fixedly connected to the keel, the upper end of the basic wall panel unit is slidably connected to the keel.

[0014] Preferably, the keel's transverse bars include a second transverse bar. The keel is provided with a second transverse bar for sliding connection with the precast wall panel. The second transverse bar protrudes from the plane containing all the longitudinal bars of the keel. A third groove is provided on the precast wall panel for the second transverse bar to be inserted from the surface of the precast wall panel. The precast wall panel and the keel are slidably connected through the third groove and the second transverse bar.

[0015] Preferably, the first groove and the first boss adopt a mortise and tenon structure that can slide against each other, and the second groove and the second boss adopt a mortise and tenon structure that can slide against each other.

[0016] Preferably, the gap between any two adjacent base wall panel units is sealed with elastic sealant.

[0017] Preferably, the wall panel connector includes a connector body and a connecting plate. The connector body is fixedly connected to the first crossbeam or the second crossbeam, and the connecting plate is rotatably connected to the connector body, with the rotation axis perpendicular to the precast wall panel.

[0018] Preferably, the connecting plate is rotatably connected to the longitudinal rod of the keel, and the rotation axis is parallel to the first crossbeam or the second crossbeam.

[0019] Preferably, the keel includes at least two longitudinal bars and at least two transverse bars, with a plurality of transverse bars spaced apart between two adjacent longitudinal bars, and the two ends of each transverse bar being rotatably connected to the two adjacent longitudinal bars respectively.

[0020] Preferably, a steel plate is fixedly connected to the keel, and the precast wall panel is fixedly connected to the keel by expansion bolts and the steel plate.

[0021] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0022] In this invention, the transverse and longitudinal bars of the keel are rotatably connected at their joints, and the keel is also rotatably connected to the first and second crossbeams. This allows the keel itself to deform as the main structure deforms, ensuring that the wall panels deform with the main structure during an earthquake without damage. One end of the precast wall panel is fixedly connected to the keel, while the other end is slidably connected to the keel in the transverse direction. Therefore, the ends of the wall panel connectors can rotate freely, ensuring that when inter-story drift occurs, the wall panels can move along the joints without damage.

[0023] Furthermore, the entire wall panel is arranged on the outside of the structure, and the insulation panels are connected by interlocking (i.e., the connection method of grooves and protrusions interlocking), which avoids through seams and eliminates the thermal weak points at the seams. This treatment ensures the insulation performance of the wall panel.

[0024] Furthermore, the gaps between any two adjacent foundation wall panel units are sealed with elastic sealant. The gaps between the foundation wall panel units are sealed with elastic sealant (as a flexible connection). This treatment not only ensures good overall stability but also reduces the impact of thermal bridging. Attached Figure Description

[0025] Figure 1 : A three-dimensional structural diagram of the present invention in its combined state;

[0026] Figure 2 : A three-dimensional structural diagram of the present invention in its exploded state;

[0027] Figure 3 : A schematic diagram of the structure of the wall panel connector of the present invention.

[0028] In the diagram, 1 is a precast wall panel, 2-1 is the first H-beam, 2-2 is the second H-beam, 3 is a wall panel connector, 3-1 is the connector body, 3-2 is the connecting plate, 4 is the keel frame, 4-1 is a square steel pipe, 4-1-1 is the first transverse square steel pipe, 4-1-2 is the second transverse square steel pipe, 4-2 is a pin, 5 is a high-strength bolt, 6 is an expansion bolt, 7-1 is the first steel plate, 7-2 is the second steel plate, 8 is the first pin hole, 9 is the second pin hole, and 10 is a bolt hole. Detailed Implementation

[0029] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be noted that the terms "upper", "lower", "between", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] See Figures 1-2 The present invention relates to a structural lightweight steel keel composite wall panel, comprising a prefabricated wall panel 1, a first horizontal beam, a second horizontal beam, wall panel connectors 3, and keels 4; wherein, the first horizontal beam and the second horizontal beam are generally H-shaped steel beams, respectively denoted as the first H-shaped steel beam 2-1 and the second H-shaped steel beam 2-2, although the first horizontal beam and the second horizontal beam can also adopt other forms of horizontal beam structure; the keel 4 is a common mesh structure keel, which includes transverse bars and longitudinal bars. In the present invention, the transverse bars and the longitudinal bars are rotatably connected at the connection nodes of the transverse bars and the longitudinal bars, and this rotatable connection can be in the form of a pin connection;

[0032] The first crossbeam is located directly above the second crossbeam. The upper end of the keel 4 is rotatably connected to the first crossbeam via the wall panel connector 3, and the lower end of the keel 4 is rotatably connected to the second crossbeam via the wall panel connector 3. This rotatable connection can be a pin connection.

[0033] The connection between the precast wall panel 1 and the keel 4 can be one of the following methods:

[0034] The first connection method is as follows: the upper end of the precast wall panel 1 is fixedly connected to the horizontal bar on the upper part of the keel 4, and the lower end of the precast wall panel 1 is slidably connected to the keel 4 in the horizontal direction.

[0035] The second connection method is as follows: the lower end of the precast wall panel 1 is fixedly connected to the horizontal bar at the bottom of the keel 4, and the upper end of the precast wall panel 1 is slidably connected to the keel 4 in the horizontal direction.

[0036] Generally, to facilitate on-site construction, the connection between the precast wall panel 1 and the keel 4 adopts the first connection method mentioned above.

[0037] The working principle of the above-mentioned structural light steel keel composite wall panel of the present invention is as follows: The horizontal and vertical rods of the keel are rotatably connected at the connection nodes of the horizontal and vertical rods, which allows the entire keel to deform in the in-plane. In addition, the keel 4 is rotatably connected to both the first and second horizontal beams. Therefore, when the first and second horizontal beams undergo lateral (i.e., Figure 1 When the keel is misaligned (as shown in the left and right directions), the keel can undergo coordinated deformation, and the lower end of the precast wall panel 1 is slidably connected to the keel 4 in the horizontal direction. Therefore, the structural light steel keel composite wall panel of the present invention undergoes horizontal displacement under earthquake action. Through the above-mentioned deformation and sliding, the overall structure will not be damaged, reducing the repair cost after the earthquake.

[0038] The prefabricated wall panel 1 of this invention can be made from a single sheet or from several basic wall panel units spliced ​​together. Specifically, when the prefabricated wall panel 1 is made from several basic wall panel units spliced ​​together, each basic wall panel unit has a first groove on its upper end face and a first protrusion on its lower end face that can be embedded in the first groove, forming an insertion structure between the first groove and the first protrusion; each basic wall panel unit has a second groove on one side and a second protrusion on the other side that matches the second groove, forming an insertion structure between the second groove and the second protrusion; the horizontal rod of the keel 4 includes a first horizontal rod, and the keel 4 has a first horizontal rod fixedly connected to the upper end of each basic wall panel unit at its upper end. The lower end of the prefabricated wall panel 1 as a whole is slidably connected to the keel 4. This connection method is as follows: Figure 1 and Figure 2 As shown, this form can generally be adopted. When the lower end of the precast wall panel 1 is slidably connected to the keel 4, the slidable connection structure can support the precast wall panel 1 from below, ensuring the stability of the overall structure after the precast wall panel 1 is installed; or, the keel 4 is provided with a first transverse bar fixedly connected to the lower end of each basic wall panel unit, and the upper end of the precast wall panel 1 is slidably connected to the keel 4.

[0039] When the precast wall panel 1 is assembled from several basic wall panel units, for each basic wall panel unit, when the upper end of the basic wall panel unit is fixedly connected to the keel 4, the lower end of the basic wall panel unit is slidably connected to the keel 4. This form is generally acceptable, as it provides support for the lower part of each basic wall panel unit, making the structure stable and less prone to detachment after installation. When the lower end of the basic wall panel unit is fixedly connected to the keel 4, the upper end of the basic wall panel unit is slidably connected to the keel 4. For the specific form of the above structure, please refer to [link to relevant documentation]. Figure 1 Figure 2Specifically, the horizontal bars of the keel 4 include a second horizontal bar (see the second horizontal square steel pipe 4-1-2). The keel 4 is provided with a second horizontal bar for sliding connection with the precast wall panel 1. The precast wall panel 1 is provided with a third groove for the second horizontal bar to be inserted from the surface of the precast wall panel 1. The precast wall panel 1 and the keel 4 are slidably connected through the third groove and the second horizontal bar. In this structure, the second horizontal bar protrudes from the plane where all the longitudinal bars of the keel 4 are located, so that the precast wall panel 1 can be tightly attached to the longitudinal bars of the keel, which is beneficial to reducing the thickness of the entire wall.

[0040] In the above-described solution of the present invention, the first groove and the first boss adopt a mortise and tenon structure that allows them to slide against each other, and the second groove and the second boss adopt a mortise and tenon structure that allows them to slide against each other. The gap between any two adjacent foundation wall panel units is sealed with elastic sealant.

[0041] See Figure 3 The wall panel connector 3 of the present invention can adopt the following structure: Specifically, the wall panel connector 3 includes a connector body 3-1 and a connecting plate 3-2. The connector body 3-1 is fixedly connected to the first crossbeam or the second crossbeam. The connecting plate 3-2 is rotatably connected to the connector body 3-1, and the axis of rotation is perpendicular to the precast wall panel 1. This rotatable connection can be a pin connection. The connecting plate 3-2 is rotatably connected to the longitudinal rod of the keel 4, and the axis of rotation is parallel to the first crossbeam or the second crossbeam. The connecting plate 3-2 and the keel 4 can be rotatably connected by a high-strength bolt 5. The high-strength bolt 5 passes through the connecting plate 3-2 and the keel 4. During connection, it can be tightened first. However, when the torque at the connection between the connecting plate 3-2 and the keel 4 exceeds the torque of friction, the connecting plate 3-2 and the keel 4 can rotate relative to each other around the high-strength bolt 5.

[0042] In the technical solution of the present invention, the keel 4 includes at least two longitudinal rods and at least two transverse rods, and a plurality of transverse rods are provided at intervals between two adjacent longitudinal rods, and the two ends of each transverse rod are respectively rotatably connected to the two adjacent longitudinal rods. Each transverse bar can have a first steel plate 7-1 welded to both ends. The first steel plate 7-1 can be in two forms: U-shaped or straight. The two ends of the first transverse square steel tube 4-1-1 can be fitted with U-shaped first steel plates 7-1 and rotatably connected to the longitudinal bars of the keel 4 via the first steel plates 7-1 and pins 4-2. This allows the first transverse square steel tube 4-1-1 to be located within the plane of the longitudinal bars of the keel 4. The two ends of the second transverse square steel tube can be fitted with straight first steel plates 7-1. The first transverse square steel tube 4-1-1 is rotatably connected to the longitudinal bars of the keel 4 via the straight first steel plates 7-1 and pins 4-2. The first transverse square steel tube 4-1-1 protrudes from the plane of the longitudinal bars of the keel 4, thus ensuring that the precast wall panel 1 fits as closely as possible to the longitudinal bars of the keel 4 and minimizes the overall wall thickness. The keel 4 of this invention (e.g., Figure 1, Figure 2 A second steel plate 7-2 is fixedly connected to the first horizontal square steel pipe 4-1-1 shown. The precast wall panel 1 and the keel 4 (as shown) Figure 1 , Figure 2 The first transverse square steel pipe (4-1-1) shown is fixedly connected to the second steel plate (7-2) by expansion bolts (6). The second steel plate (7-2) serves as a gasket and a connector. The transverse and longitudinal bars of the keel 4 are generally made of square steel pipe (4-1) with a square cross-section. Of course, in actual working conditions, other cross-sections of pipes, such as rectangular cross-sections and circular cross-sections, can also be used. This invention does not make specific limitations on this.

[0043] Example

[0044] like Figures 1-3 As shown, the structural light steel keel composite wall panel of this embodiment includes a prefabricated wall panel 1, a first H-shaped steel beam 2-1, a second H-shaped steel beam 2-2, wall panel connectors 3, and keels 4. Both the horizontal and vertical bars of the keel 4 are made of square steel pipes 4-1. In this embodiment, the prefabricated wall panel 1 is assembled from several basic wall panel units. The horizontal bars include two types: a first horizontal square steel pipe 4-1-1 and a second horizontal square steel pipe 4-1-2. The first horizontal square steel pipe 4-1-1 is fixedly connected to the upper end of each basic wall panel unit of the prefabricated wall panel 1 via a second steel plate 7-2 and expansion bolts 6. The second steel plate 7-2 is welded to the first horizontal square steel pipe 4-1-1. A horizontal groove is formed at the lower end of each basic wall panel unit of the prefabricated wall panel 1 from the surface inwards. The second horizontal square steel pipe 4-1-2 is embedded in this groove, enabling the horizontal sliding of the basic wall panel unit and supporting the bottom of the basic wall panel unit. Both ends of the first transverse square steel tube 4-1-1 are welded with second steel plates 7-2. The second steel plates 7-2 have a U-shaped structure. The bottom edge of the second steel plate 7-2 is welded to the end of the first transverse square steel tube 4-1-1. The opening of the second steel plate 7-2 is engaged with the front and rear sides of the longitudinal rod of the keel 4 and is rotatably connected to the longitudinal rod via pins 4-2. The longitudinal rod is a complete and continuous rod, which can be obtained by coaxially welding several shorter longitudinal rods. The first transverse square steel tube 4-1-1 is located in the plane containing all the longitudinal rods. Both ends of the second transverse square steel tube 4-1-2 are welded with steel plates on one side. These steel plates are flat. The second transverse square steel tube 4-1-2 is rotatably connected to the longitudinal rod via these steel plates and pins 4-2. The second transverse square steel tube 4-1-2 protrudes from the plane containing the first transverse square steel tube 4-1-1 and all the longitudinal rods to facilitate a sliding connection with the bottom of the foundation wall panel unit. See also... Figure 3The wall panel connector 3 includes a connector body 3-1 and a connecting plate 3-2. The connector body 3-1 is fixedly connected to the first and second H-shaped steel beams by high-strength bolts 5. The connecting plate 3-2 is rotatably connected to the connector body 3-1 by a pin. The connecting plate 3-2 adopts a U-shaped plate. The two wings of the connecting plate 3-2 are rotatably connected to the longitudinal rod by high-strength bolts 5.

[0045] Specifically, the aforementioned types of steel plates are connected to the transversely arranged transverse pipes by welding with equal strength. It should be noted that welding is performed in the factory, while bolting is done on-site. The wall panel connector 3, after installation, does not exceed the width of the H-beam 2. The basic wall panel unit's structure sequentially encloses the base layer, insulation layer, and surface layer. The upper and right sides of the basic wall panel unit have grooves, and the lower and left sides have protrusions that align with these grooves. Adjacent basic wall panel units can be fixed and spliced ​​using a mortise and tenon joint-like connection, while ensuring lateral sliding between the basic wall panel units. Furthermore, the joints between the basic wall panel units are connected using a flexible connection method, employing elastic sealant.

[0046] The construction method of the structural light steel keel composite wall panel in this embodiment includes the following steps.

[0047] S1: In the factory: A first pin hole 8 is opened on the longitudinal rod for the pin 4-2 to pass through; a pin hole for the pin 4-2 is opened on the first steel plate 7-1; a second pin hole for the high-strength bolt 5 is opened at both the upper and lower ends of the longitudinal rod; a pin hole for the high-strength bolt 5 is opened on the wing of the connecting plate 3-1 of the wall panel connector 3; a bolt hole 10 for the expansion bolt 6 is opened on the second steel plate 7-1.

[0048] S2: In the factory: Weld the above-mentioned steel plates at designated positions on different transverse bars;

[0049] S3: On-site: Assemble the keel 4; splice and assemble the basic wall panel units to form the precast wall panel 1. After assembly, fix the first horizontal square steel pipe 4-1-1 of the keel 4 to the upper end of the basic wall panel unit of the precast wall panel 1 with expansion bolts 6, and embed the second horizontal square steel pipe 4-1-2 into the groove at the lower end of the basic wall panel unit to achieve a sliding connection; thus realizing the connection between the precast wall panel 1 and the keel 4.

[0050] S4: The first H-beam 2-1, the first H-beam 2-2 and the main body 3-1 of the wall panel connector 3 are connected by high-strength bolts 5. The bottom edge of the connecting plate 3-2 is connected to the main body 3-1 of the connector by a single-sided bolt, so as to realize the rotational connection between the main body 3-1 of the connector and the connecting plate 3-2. The wing edge of the connecting plate 3-2 is then rotatedly connected to the longitudinal rod of the keel 4 by high-strength bolts 5. The assembly of the precast wall panel 1 and the keel 4 is connected to the first H-beam 2-1 and the first H-beam 2-2, so as to realize the assembly of the structural light steel keel composite wall panel of this embodiment.

Claims

1. An institutional light gauge steel composite wall panel, characterised in that, The prefabricated wallboard (1), the first cross beam, the second cross beam, the wallboard connecting piece (3) and the keel (4) are included. The transverse rod and the longitudinal rod of the keel (4) are rotationally connected at the connecting node of the transverse rod and the longitudinal rod. The first cross beam is arranged directly above the second cross beam, the upper end of the keel (4) is rotationally connected with the first cross beam through the wallboard connecting piece (3), and the lower end of the keel (4) is rotationally connected with the second cross beam through the wallboard connecting piece (3). The upper end of the prefabricated wallboard (1) is fixedly connected with the transverse rod of the upper part of the keel (4), and the lower end of the prefabricated wallboard (1) is slidingly connected with the keel (4), and the sliding direction is the transverse direction; or the lower end of the prefabricated wallboard (1) is fixedly connected with the transverse rod of the lower part of the keel (4), and the upper end of the prefabricated wallboard (1) is slidingly connected with the keel (4), and the sliding direction is the transverse direction. The prefabricated wallboard (1) includes a plurality of basic wallboard units, and the plurality of basic wallboard units are spliced to form the prefabricated wallboard (1). The upper end surface of each basic wallboard unit is provided with a first groove, and the lower end surface is provided with a first boss capable of being embedded in the first groove; one side surface of each basic wallboard unit is provided with a second groove, and the other side surface is provided with a second boss matched with the second groove. The transverse rod of the keel (4) includes a first transverse rod, and the upper end of each basic wallboard unit is provided with a first transverse rod fixedly connected with the basic wallboard unit on the keel (4), and the lower end of the prefabricated wallboard (1) is slidingly connected with the keel (4). Alternatively, the lower end of each basic wallboard unit is provided with a first transverse rod fixedly connected with the basic wallboard unit on the keel (4), and the upper end of the prefabricated wallboard (1) is slidingly connected with the keel (4). The wallboard connecting piece (3) includes a connecting piece main body (3-1) and a connecting plate (3-2), the connecting piece main body (3-1) is fixedly connected with the first cross beam or the second cross beam, and the connecting plate (3-2) is rotationally connected with the connecting piece main body (3-1), and the rotation axis is perpendicular to the prefabricated wallboard (1). The connecting plate (3-2) is rotationally connected with the longitudinal rod of the keel (4), and the rotation axis is parallel to the first cross beam and the second cross beam. The transverse rod of the keel (4) includes a second transverse rod, the keel (4) is provided with a second transverse rod for sliding connection with the prefabricated wallboard (1), the second transverse rod protrudes from the plane where all the longitudinal rods of the keel (4) are located, the prefabricated wallboard (1) is provided with a third groove for embedding the second transverse rod from the surface of the prefabricated wallboard (1), and the prefabricated wallboard (1) and the keel (4) are slidingly connected through the third groove and the second transverse rod. The keel (4) includes at least two longitudinal rods and at least two transverse rods, a plurality of transverse rods are arranged between the adjacent two longitudinal rods, and the two ends of each transverse rod are rotationally connected with the adjacent two longitudinal rods.

2. The institutional light gauge steel composite wall panel according to claim 1, wherein, For each basic wallboard unit, when the upper end of the basic wallboard unit is fixedly connected with the keel (4), the lower end of the basic wallboard unit is slidingly connected with the keel (4); when the lower end of the basic wallboard unit is fixedly connected with the keel (4), the upper end of the basic wallboard unit is slidingly connected with the keel (4).

3. The institutional light gauge steel composite wall panel according to claim 1, wherein, The first recess and the first boss adopt a mortise and tenon structure capable of sliding with each other, and the second recess and the second boss adopt a mortise and tenon structure capable of sliding with each other.

4. The composite wall panel according to claim 1, wherein, The gap between any two adjacent base wallboard units is sealed by elastic sealing paste.

5. The institutional light gauge steel composite wall panel as claimed in claim 1, wherein, The keel (4) is fixedly connected with a steel plate, and the prefabricated wallboard (1) and the keel (4) are fixedly connected through the expansion bolts (6) and the steel plate.

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