A new corner connecting piece used for light steel keel composite wall body connection

Abstract

The application discloses a corner connecting piece for connecting a light steel keel composite wall, and aims to solve the problems of difficult construction, large cross-section loss and weak ability to adapt to different thickness walls of the existing connecting mode. The corner connecting piece is a three-dimensional frame structure welded together, the core components include a cold-bent thin-walled square steel pipe corner column, two cold-bent thin-walled C-shaped steel side columns separately arranged on the two sides of the corner column, a cold-bent thin-walled U-shaped steel guide rail connecting the top end and the bottom end of the corner column and the side column, and a plurality of cold-bent thin-walled square steel pipe diagonal supports arranged in the frame. The light steel keel composite wall is connected with the side column and the guide rail of the connecting piece through self-tapping screws. The application relies on the prefabricated standardized connecting piece, realizes the quick and reliable assembly between walls, especially at the corner, has high strength and good adaptability, and is especially suitable for modular low-rise light steel assembly buildings, and is consistent with the policy guidance of rural housing improvement and the development of assembly buildings in the field of construction.

Description

Technical Field

[0001] This invention relates to the field of composite walls for modular buildings, and more specifically to a component for connecting light steel keel composite walls in modular buildings, particularly at corners. Background Technology

[0002] Light steel keel composite walls, constructed with a keel framework of cold-formed thin-walled steel and covered with various types of panels, are increasingly being used as load-bearing walls in modular low-rise residential buildings due to their numerous advantages, including lightweight, high strength, excellent seismic performance, convenient and efficient construction, and environmental friendliness and recyclability. During the installation of such buildings, reliable connections between adjacent walls, especially at corners, are crucial. These areas not only need to transmit vertical loads and horizontal shear forces but also withstand the impact of external forces such as wind loads and earthquakes, placing extremely high demands on the reliability and durability of the connection nodes. However, in actual construction, traditional connection methods for light steel keel composite walls have revealed many drawbacks, including difficulties in connection operations and significant losses in the connection cross-section. Therefore, researching connectors suitable for connecting light steel keel composite walls is of great significance for improving the connection methods of light steel keel modular building walls and promoting the modular prefabricated construction of light steel structures. Existing methods of directly bolting or using self-tapping screws to connect adjacent composite wall light steel frames often require additional connecting plates or protective steel cladding on the outside of the keel. This not only easily leads to material waste but also presents construction difficulties due to the small cross-sectional dimensions of the keel. When the thicknesses of the walls on both sides are different, it is even more difficult to connect the light steel keel frames at the joint, making construction challenging. The national policy of vigorously promoting rural housing improvement and the policy of promoting prefabricated construction in the building sector have placed demands on improving composite wall connection methods. Therefore, the invention of a new type of corner connector for connecting light steel keel composite walls has emerged.

[0003] Therefore, there is an urgent need in this field for a new type of component specifically designed for corner connections in light steel keel composite walls. This component should have three core functions: first, it should significantly simplify the on-site construction process, reduce reliance on workers' operational skills, and enable rapid and precise assembly of wall corners; second, it should provide stable and reliable connection strength, avoid loss of effective load-bearing area of ​​the keel cross section, and ensure the safety of the building structure; and third, it should have good flexibility and adaptability to meet the connection needs of walls of different thicknesses. Summary of the Invention

[0004] This invention aims to overcome the shortcomings of existing light steel keel-straw board composite wall connection methods and provides a novel corner connector for connecting light steel keel composite walls. The main technical problem it solves is: how to provide a dedicated corner connector that is structurally sound, easy to install, reliably connected, and adaptable to connecting walls of different thicknesses on both sides.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A corner connector for connecting light steel keel composite walls is characterized in that: the connector is a three-dimensional frame structure, mainly composed of a corner column, two side columns, multiple horizontal guide rails and multiple diagonal supports, and the light steel keel composite wall can be connected to this new corner connector by self-tapping screws.

[0007] The connector frame consists of one cold-formed thin-walled square steel tube corner column, two cold-formed thin-walled C-shaped steel side columns, four cold-formed thin-walled U-shaped steel guide rails, and eight cold-formed thin-walled square steel tube supports. The dimensions of each steel section can be adjusted according to the dimensions of the light steel keel composite wall used for connection.

[0008] Specifically, the corner column is a cold-formed thin-walled square steel pipe, which is installed on the inside of the corner of the connector.

[0009] The two side columns are cold-formed thin-walled C-shaped steels, which are arranged parallel to each other on both sides of the corner column, forming an installation space between them to accommodate the wall frame.

[0010] The horizontal guide rail includes an upper guide rail assembly and a lower guide rail assembly, both made of cold-formed thin-walled U-shaped steel. The upper and lower guide rail assemblies are fixedly connected to the top and bottom of the corner column and the two side columns, respectively, connecting the corner column and the two side columns into a stable rectangular frame.

[0011] The diagonal support consists of multiple cold-formed thin-walled square steel tubes, which are inclinedly arranged in the space enclosed by corner columns, side columns and horizontal guide rails. Their two ends are welded to the corner columns, side columns or horizontal guide rails respectively, in order to enhance the shear resistance and overall stability of the entire connecting frame.

[0012] Preferably, the cold-formed thin-walled C-shaped steel used on the two side columns can have different specifications to accommodate the need to connect walls of different thicknesses. Similarly, the specifications of the horizontal guide rails connected to the different side columns can also be adjusted accordingly.

[0013] The light steel keel composite wall is secured to the side column or horizontal guide rail of the connector by self-tapping screws that pass through its own light steel keel. This achieves a reliable connection with the connector.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) Modularization and standardization: This invention provides an independent, pre-made connection module, which realizes standardized production and assembly of node connections, greatly simplifies the on-site construction process and improves construction efficiency.

[0016] (2) Reliable connection and high strength: Through the overall design of the three-dimensional frame structure and the reinforcement of the internal diagonal support, the various loads transmitted from the wall to the corner node are effectively transferred and dispersed, ensuring the strength and stiffness of the corner node and the overall stability.

[0017] (3) Strong adaptability: By adopting edge columns and guide rails of different specifications, it can flexibly adapt to and connect light steel keel composite walls of different thicknesses, solving the problem of non-standard node connection.

[0018] (4) Facilitates panel installation: The corner posts of the connector provide a reliable attachment and fixing base for the end of the panel, allowing the wall panel to be extended and fixed to the connector, ensuring the continuity and integrity of the building plane, and can be used to connect walls with different thicknesses on both sides.

[0019] (5) Good economic efficiency: It avoids complex on-site cutting and welding work, reduces material waste and construction waste emissions during construction, and simplifies the installation process to reduce labor costs. It fully complies with the green, efficient and low-carbon development concept of prefabricated buildings and can be used for modular low-rise light steel prefabricated buildings.

[0020] (6) It echoes the national requirement to vigorously develop prefabricated construction in the construction field. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the novel corner connector of the present invention.

[0022] Figure 2 This is a schematic diagram of the skeleton of the novel corner connector.

[0023] Figure 3 This is a schematic diagram showing the connection between the new corner connector and the light steel keel of the composite wall.

[0024] Figure 4 This is a schematic diagram showing the corner connector being connected to the composite wall and then covered with a panel.

[0025] In the diagram: 1 is a cold-formed thin-walled square steel tube (corner column); 2 and 3 are cold-formed thin-walled U-shaped steel guide rails (horizontal guide rails) of different specifications; 4 and 5 are cold-formed thin-walled C-shaped steel columns (side columns) of different specifications; 6 is a cold-formed thin-walled square steel tube support (diagonal support); 7 is the cold-formed thin-walled steel frame of the light steel keel-straw board composite wall; and 8 is the covering panel of the light steel keel-straw board composite wall. Detailed Implementation

[0026] The embodiments of this invention are all conventional methods, and the materials used are all available from common commercial sources. The specific embodiments of this invention will be further described in detail below with reference to the accompanying drawings.

[0027] The corner connector of the present invention is, at its core, a three-dimensional rigid frame welded from cold-formed thin-walled steel.

[0028] First, provide a cold-formed thin-walled square steel tube as corner column 1. Its length, cross-sectional dimensions, and wall thickness are determined based on the floor height or design requirements. Then, select four cold-formed thin-walled U-shaped steel sections (divided into upper guide rail group 2 and lower guide rail group 3) as horizontal guide rails. According to the design positions, weld them to both ends (upper and lower positions) and corresponding height positions of corner column 1. During welding, the opening of the U-shaped steel section should face outwards towards the connector to facilitate cooperation with the wall joists.

[0029] Next, the length of the column is determined according to the net distance between the upper and lower horizontal U-shaped guide rails, and two cold-formed thin-walled C-shaped steels 4 and 5 are cut as side columns. The side columns 4 and 5 are placed on both sides of the corner column 1, and their ends are connected to the upper and lower horizontal guide rails respectively. Then, they are welded at the joint to form a main frame with the corner column 1 as the vertex, including the two side columns and the upper and lower horizontal guide rails.

[0030] To further enhance the stability of the main frame, cold-formed thin-walled square steel tube supports of a selected cross-section are placed at appropriate locations within the connector skeleton. Multiple cold-formed thin-walled square steel tubes are welded into their internal cavities as diagonal supports 6. These diagonal supports 6 should be arranged at a certain angle (e.g., 45°), and their ends should be reliably welded between the corner column 1 and the side columns 4 and 5, or between the side columns 4 and 5 and the horizontal guide rail 2, forming a stable triangular support system. At this point, the complete corner connector is fabricated.

[0031] The completed corner connector can be directly connected to the cold-formed thin-walled steel frame of the light steel keel-straw board composite wall using self-tapping screws. Push the two light steel keel composite wall frame members 7 (usually C-shaped or U-shaped steel) towards both sides of the connector, so that the end members of the wall are embedded in the installation space formed by the side posts 4 and 5 and the corner post 1. Use self-tapping screws to sequentially penetrate the webs of the wall keel and the side posts 4 and 5 of the connector (or the webs of the horizontal guide rails 2 and 3) to secure the connection.

[0032] After the corner connector is connected to the light steel frame of the wall, the cover panel can be extended to the corner square steel column of the corner connector when installing the cover panel on one or both sides of the composite wall. The cover panel and the corner connector are connected by self-tapping screws.

[0033] After the corner connector is connected to the light steel frame of the wall, the panel 8 is installed. When installing the panel 8 on one or both sides of the composite wall, the panel can be extended to the corner post 1 of the corner connector, and the edge of the panel 8 can be directly fixed to the corner post 1 with self-tapping screws, thereby forming a continuous, flat and solid indoor corner, realizing the connection between the panel and the corner connector.

[0034] For situations where the wall thicknesses on both sides are different, during the design and manufacturing stage of this connector, cold-formed thin-walled C-shaped steel with different cross-sectional dimensions can be selected as side columns 4 and 5 on both sides of the corner column 1, and horizontal guide rails 2 and 3 of different sizes can be selected accordingly. In this way, without changing the core structure of the connector, it can perfectly adapt to walls of different thicknesses and achieve a flexible and reliable connection.

[0035] Because of its many advantages, this corner connector can be extended to practical construction engineering applications.

Claims

1. A novel corner connector for connecting light steel keel composite walls, characterized in that: It includes corner columns (1), two side columns (4, 5), horizontal guide rails (2, 3) and multiple diagonal supports (6). The corner column (1) is a cold-formed thin-walled square steel pipe, which is set on the inside of the corner of the connector; The two side columns (4, 5) are cold-formed thin-walled C-shaped steels, which are arranged in parallel on both sides of the corner column (1); The horizontal guide rails (2, 3) are cold-formed thin-walled U-shaped steel, including an upper guide rail group and a lower guide rail group. The upper and lower guide rail groups are fixedly connected to the top and bottom of the corner column (1) and the two side columns (4, 5) respectively, so that the corner column (1), the side columns (4, 5) and the horizontal guide rails (2, 3) together form the main frame of the connector. The multiple inclined supports (6) are cold-formed thin-walled square steel pipes, which are inclinedly arranged in the internal cavity of the main frame, and their two ends are fixedly connected to the corner column (1), the side column (4, 5) or the horizontal guide rail (2, 3) respectively.

2. The modular composite wall corner connection component according to claim 1, characterized in that: The corner column (1) is a cold-formed thin-walled square steel pipe, the side columns (4, 5) are cold-formed thin-walled C-shaped steel, and the horizontal guide rails (2, 3) are cold-formed thin-walled U-shaped steel.

3. The modular composite wall corner connection component according to claim 1, characterized in that: The oblique support (6) is a cold-formed thin-walled square steel pipe.

4. The modular composite wall corner connection component according to claim 1, characterized in that: The two side columns (4, 5) have different specifications and are used to adapt to composite walls of different thicknesses on both sides of the corner; the specifications of the horizontal guide rails (2, 3) connected to the side columns (4, 5) are adapted to the corresponding side columns.

5. The modular composite wall corner connection component according to claims 1 and 2, characterized in that: The end keel of the composite wall can be inserted into the installation space and connected and fixed to the side columns (4, 5) and horizontal guide rails (2, 3) by self-tapping screws.

6. The novel corner connection member according to claims 1, 2 and 3, characterized in that: Both the inner and outer wall panels can be directly extended to the corners of the connectors and then connected to the cold-formed thin-walled square steel pipes at the corners of the connectors using self-tapping screws, without affecting the appearance of the module.

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