A modular building frame structure
By combining L-shaped profiles and reinforcing ribs, the structural performance and appearance issues of aluminum alloy modular buildings are solved, achieving a modular building frame structure with high stability, high efficiency and high reusability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI FENGCULANG ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-03
Smart Images

Figure CN224451861U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of architecture, and in particular to a composite building frame structure. Background Technology
[0002] Currently, in the field of modern architecture, temporary and semi-permanent buildings such as exhibition halls and prefabricated houses widely adopt modular assembly designs to achieve rapid construction. Aluminum alloy profiles, with their lightweight and high-strength structural characteristics, excellent corrosion resistance, and significant advantages such as environmentally friendly and recyclable raw materials and high efficiency in industrialized mass production, have become the core building material for such structures, finding large-scale application in scenarios such as exhibitions, cultural tourism, and emergency projects.
[0003] However, there are still three major technical challenges in the practical application of aluminum alloy modular buildings that urgently need to be addressed:
[0004] In terms of structural performance: there is a technical contradiction between the structural strength requirements and the assembly precision control, resulting in insufficient overall stability of the building and difficulty in meeting the safety requirements of high-load scenarios;
[0005] In terms of recycling: the component connection nodes have a high loss rate and are prone to structural damage during repeated disassembly and assembly, resulting in a lower reusability rate of components than expected by the industry and increasing the total life cycle cost.
[0006] In terms of appearance design: the problem of exposed fasteners in traditional assembly processes is prominent, which damages the integrity and aesthetics of the building facade. This is especially true in high-end exhibitions, commercial displays and other scenarios with strict requirements for architectural aesthetics, becoming a major bottleneck for design implementation.
[0007] Based on this, we propose a new type of modular building frame structure system. By innovating node connection technology, optimizing component mechanical design and concealed assembly process, we systematically solve the contradictions between strength and precision, loss and reuse, and aesthetics and function, providing a technical solution for the performance upgrade of modular buildings. Utility Model Content
[0008] In order to solve the problems existing in the prior art, this utility model provides a modular building frame structure.
[0009] To achieve the above objectives, the present invention adopts the following technical solution:
[0010] A modular building frame structure, including columns, beams, and corner brackets for connection;
[0011] Each of the upright columns and each of the cross beams includes a plurality of support profiles. The support profile includes a profile body with an L-shaped cross section, a diagonal brace plate integrally formed with the profile body, and a cover plate detachably engaged with the profile body. The cover plate is used to shield the diagonal brace plate, and mounting holes are provided in the diagonal brace plate.
[0012] The corner fitting includes a base plate and a connecting plate fixed to the surface of the base plate. The corner fitting is used for connecting the support profiles.
[0013] Preferably, clamping plates are provided at both end portions of the cover plate, and clamping grooves adapted to the clamping plates are provided on the profile body.
[0014] Preferably, a convex block structure is provided on the inner side of the clamping plate.
[0015] Preferably, the inner side surface of the cover plate is in contact with the outer side surface of the diagonal brace plate.
[0016] Preferably, the support profile further includes a reinforcing rib plate, and both sides of the reinforcing rib plate are respectively connected to the profile body and the diagonal brace plate.
[0017] Preferably, a chamfer structure is provided at the turning portion of the profile body.
[0018] Preferably, a T-shaped groove or a weight-reducing groove is provided on the outer side of the end portion of the profile body.
[0019] Preferably, the projection of the connecting plate on the base plate is in the shape of a "one" character, a "plus" character, a "T" shape or a right angle.
[0020] Preferably, weight-reducing holes may be provided in the connecting plate.
[0021] Preferably, a wooden board may be provided on the outer side surface of the cover plate.
[0022] Compared with the prior art, the present utility model has the following beneficial effects:
[0023] By connecting profiles with corner fittings, the present utility model can quickly complete the assembly work of a building frame. After the profiles and corner fittings are connected, the cover plate can form a fully shielded effect on the connection part, effectively hiding the connection traces and making the building facade present an integrated aesthetic effect. At the same time, the L-shaped columnar structure of the profile body, combined with the mechanical design of the diagonal brace plate and the reinforcing rib plate, forms a triangular stable support system. Through mechanical tests, it is verified that its bending strength is increased by more than 30% compared with traditional profiles. Moreover, the profiles can be completely disassembled and reused during building renovation or disassembly, and the reuse rate reaches more than 90%, combining engineering practicability and the concept of green buildings. This combined building frame structure has the characteristics of high precision, high efficiency, high turnover and reusability. Description of the Drawings
[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0025] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model;
[0026] Figure 3 This is a schematic diagram of the supporting profile in an embodiment of the present utility model;
[0027] Figure 4 This is an exploded view of the supporting profile in an embodiment of this utility model;
[0028] Figure 5 This is a schematic diagram of another structure of the supporting profile in an embodiment of this utility model;
[0029] Figure 6 This is a schematic diagram of the supporting profile with a wooden board in an embodiment of this utility model;
[0030] Figure 7 This is a schematic diagram of the corner bracket structure in an embodiment of this utility model.
[0031] Figure reference numerals:
[0032] 10. Supporting profile; 1. Profile body; 11. Chamfered structure; 12. Slot; 13. T-slot; 14. Weight reduction slot; 15. Reinforcing structure; 16. Wood board; 2. Diagonal brace; 3. Cover plate; 31. Clip plate; 4. Reinforcing rib plate; 5. Corner bracket; 51. Base plate; 52. Connecting plate. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0034] This utility model provides a novel aluminum alloy building profile.
[0035] like Figures 1 to 7 As shown, a modular building frame structure includes columns, beams, and angle brackets 5 for connection. Each column and beam includes several aluminum alloy supporting profiles 10; the angle brackets 5 are steel structures used to connect the supporting profiles 10. Columns are fixed to the ground via angle brackets 5, columns are vertically connected to each other via angle brackets 5, columns are fixedly connected to beams via angle brackets 5, and beams are fixedly connected to each other via angle brackets 5.
[0036] In this embodiment, the supporting profile 10 includes a profile body 1, an inclined brace 2 integrally formed with the profile body 1, and a cover plate 3 that is snapped into the profile body 1.
[0037] The profile body 1 adopts an L-shaped columnar structure with varying wall thicknesses. Its turning points are designed with chamfered edges 11 to effectively eliminate stress concentration points. The profile body 1 features a symmetrical design on both sides, with the outer wall thickness approximately twice that of the inner wall. This gradient in wall thickness achieves a balance between lightweight design and mechanical performance. The diagonal bracing plates 2 are precisely connected to the wall thickness transition areas of the two side plates of the profile body 1. Standard mounting holes are provided on the plate surface to ensure a reliable connection between the profile and the external structure. The cover plate 3 can be snapped into the profile body 1 for quick assembly, completely covering the diagonal bracing plates 2 and fasteners, achieving a unified aesthetic appearance.
[0038] Preferably, parallel retaining plates 31 extend along the length of both ends of the cover plate 3, and the two retaining plates 31 are distributed perpendicularly to the main body of the cover plate 3 at 90°. A protrusion structure is formed on the inner side of the outer end of the retaining plate 31, and correspondingly, a matching retaining groove 12 is formed on the profile body 1, with a certain assembly tolerance reserved in the groove wall. The retaining plate 31 and the retaining groove 12 adopt an embedded mortise and tenon structure design. During assembly, the protrusion and the inner wall of the retaining groove 12 form a stepped interference fit. Through the friction and mechanical locking force generated by the interference fit, a stable connection between the cover plate 3 and the profile body 1 is achieved.
[0039] In this embodiment, the inner side of the cover plate 3 is fitted with the outer side of the bracing plate 2. The tight fit between the two effectively eliminates visual gaps, perfectly hides the installation structure, and effectively prevents dust from entering between them.
[0040] To ensure the structural strength of the profile body 1, a reinforcing structure 15 is formed inside the connection between the profile body 1 and the diagonal brace 2. The reinforcing structure 15 is a fan-shaped columnar structure. The two sides of the reinforcing structure 15 are connected to the profile body 1 and the diagonal brace 2 respectively. A hollow cylindrical structure is formed in the middle of the fan-shaped columnar structure. This cylindrical structure is connected to the fan-shaped surface of the fan-shaped columnar structure.
[0041] To further enhance the structural strength of the profile body 1, the profile also includes a reinforcing rib 4, with the two sides of the reinforcing rib 4 connecting the profile body 1 and the diagonal brace 2, respectively. Specifically, the reinforcing rib 4 is connected to the middle of the diagonal brace 2 and the turning point of the profile body 1.
[0042] The diagonal brace 2 and the reinforcing rib 4 adopt a T-shaped connection structure to form a stable spatial truss structure. Finite element analysis shows that this design increases the overall torsional stiffness of the profile by 60% and enhances its bending strength by 55%, effectively dispersing stress concentration at stress points and reducing stress peaks in key areas by more than 30%. Simultaneously, the integrated molding process of the reinforcing rib 4 and the profile body 1 further reduces weak points in the connection, ensuring high structural strength while improving the overall durability and fatigue resistance of the profile.
[0043] In this embodiment, as Figure 4As shown, a T-shaped groove 13 is provided on the outer side of the end of the profile body 1 along the length direction of the profile body 1. A sealing gasket is installed in the T-shaped groove 13 to seal the connection gap between the profile body 1 and other structures, so as to have excellent dust-proof and wind-proof performance, and significantly improve the sealing and durability of the building structure.
[0044] When it is not necessary to ensure the sealing of the connection between the profile body 1 and other structures, this embodiment also discloses a profile of another structure, such as Figure 5 As shown, a hollow weight-reducing groove 14 is formed at the end of the profile body 1 to reduce the weight of the profile body 1.
[0045] In this embodiment, the profile can be used alone as a beam or column and connected to structures such as plates. The profiles can also be used in combination, with two, three or four profiles combined. Between the installation of the plate or glass, the two are fixed by fixing parts.
[0046] In addition, through holes can be provided on the surface of the cover plate 3 to facilitate the installation of the lamp body on the cover plate 3.
[0047] In addition, as Figure 6 shown, a wooden board 16 can be installed on the outer side of the cover plate 3, so that the whole of the column and the beam presents a visual effect of a wood-like structure.
[0048] As Figure 2 、 Figure 6 and Figure 7 shown, in this embodiment, the corner fitting 5 is made of steel structure, which includes a base plate 51 and a connecting plate 52 welded to the surface of the base plate 51. The connecting plate 52 is welded to one or both sides of the base plate 51, and the projection of the connecting plate 52 on the base plate 51 is in the shape of "one", "cross", "T" or right angle.
[0049] In this embodiment, the structural form of the corner fitting 5 is not limited and can be customized according to the actual working conditions. Among them, the connecting plate 52 needs to be fitted with the end of the supporting profile 10 and fixed by bolts. In addition, weight-reducing holes can be provided on the connecting plate 52 according to actual needs to optimize the weight and structural performance of the component.
[0050] During actual use, the glass can be installed between the inner and outer supporting profiles 10, which can be used as an alternative to the insulating glass of the broken bridge aluminum doors and windows and the curtain wall glass. This structure firmly holds the glass through the profile. It can not only continue the insulating cavity design of the broken bridge aluminum to block heat conduction, but also draw on the large-size transparency characteristics of the curtain wall glass. While ensuring the lighting performance, through the optimization of the profile material (such as high-strength aluminum alloy or composite material), the wind pressure resistance and sealing performance of the structure are improved.
[0005] 9>
[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A modular building frame structure, characterized in that, It includes columns, crossbeams and corner codes (5) for connection; Each of the columns and each of the crossbeams includes a plurality of support profiles (10). The support profile (10) includes a profile body (1) with an L-shaped cross-section, a diagonal brace plate (2) integrally formed with the profile body (1), and a cover plate (3) detachably engaged with the profile body (1). The cover plate (3) is used to cover the diagonal brace plate (2), and mounting holes are provided on the diagonal brace plate (2); The corner code (5) includes a base plate (51) and a connecting plate (52) fixed on the surface of the base plate (51). The corner code (5) is used for connecting the support profiles (10).
2. The modular building frame structure of claim 1, wherein, Clamping plates (31) are provided at both end portions of the cover plate (3), and clamping grooves (12) adapted to the clamping plates (31) are provided on the profile body (1).
3. The modular building frame structure of claim 2, wherein, A convex structure is provided inside the clamping plate (31).
4. The modular building frame structure of claim 3, wherein, The inner side surface of the cover plate (3) is in contact with the outer side surface of the diagonal brace plate (2).
5. The modular building frame structure of claim 1, wherein, The support profile (10) further includes a reinforcing rib plate (4). Both sides of the reinforcing rib plate (4) are respectively connected to the profile body (1) and the diagonal brace plate (2).
6. The modular building frame structure of claim 1, wherein, A chamfer structure (11) is provided at the turning point of the profile body (1).
7. The modular building frame structure of claim 1, wherein, A T-shaped groove (13) or a weight-reducing groove (14) is provided on the outer side of the end of the profile body (1).
8. The modular building frame structure of claim 1, wherein, The projection of the connecting plate (52) on the base plate (51) is in a shape of "one", "ten", "T" or right angle.
9. The modular building frame structure of claim 8, wherein, Weight-reducing holes may be provided on the connecting plate (52).
10. The modular building frame structure of claim 1, wherein, A wooden board (16) may be provided on the outer side surface of the cover plate (3).