Fabricated connectable steel reinforced concrete short column
By designing H-shaped grooves and connecting frames in the steel-concrete short columns, and combining rubber pads and steel sections to replace reinforcing bars, the problems of impact damage and poor seismic performance of precast reinforced concrete columns in prefabricated buildings during transportation are solved, achieving smaller volume and higher seismic performance.
Patent Information
- Application Number
- CN202520157212.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Precast reinforced concrete columns used in existing prefabricated buildings are easily damaged during transportation, and their heavy weight results in poor seismic performance.
Connectable steel-concrete short columns are used. H-shaped grooves are opened on the bottom surface of the steel-concrete short columns, and steel is extended on the top surface. Connecting frames and rubber pads are used to improve connection stability and sealing. Steel is used instead of steel bars to reduce volume and self-weight.
It reduces bumps and collisions during transportation, improves seismic performance, and reduces the negative impact of its own weight.
Smart Images
Figure CN223793776U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated building technology, and in particular to a prefabricated connectable steel-concrete short column. Background Technology
[0002] With the acceleration of urbanization, the construction industry faces challenges such as tight deadlines, high costs, and labor shortages. Prefabricated buildings, due to their advantages of high construction efficiency, relatively short construction periods, and labor savings, are experiencing a rapidly growing market demand. The use of precast reinforced concrete columns in prefabricated buildings is becoming increasingly common, becoming an important component of modern construction projects. Compared to cast-in-place reinforced concrete columns, precast reinforced concrete columns are more scientifically designed in terms of material proportions and curing conditions, resulting in superior quality. Furthermore, they demonstrate significant advantages in resource conservation and construction speed.
[0003] However, existing precast reinforced concrete columns for assembled buildings are typically fabricated as a single, complete column in the factory. This method, due to its large volumetric weight, makes them susceptible to damage during transportation, impacting their lifespan. Secondly, precast reinforced concrete columns, primarily composed of steel reinforcement and concrete, require a thick protective layer. As the protective layer thickness increases, the weight of the specimen also increases, leading to a decrease in seismic performance. Considering both the convenience of transportation and the poor seismic performance caused by the heavy weight of reinforced concrete structures, this invention provides a precast, connectable steel-concrete short column to address the problems of the existing technology. Utility Model Content
[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a prefabricated connectable steel-concrete short column, including a steel-concrete short column A, a steel-concrete short column B below the steel-concrete short column A, the steel-concrete short column A and the steel-concrete short column B are fixedly installed together by a connecting frame, the bottom surface of the steel-concrete short column A has an H-shaped groove, the top surface of the steel-concrete short column B is fixedly connected to a steel section B, the steel section B extends into the H-shaped groove and is adapted to the H-shaped groove, and a short section of steel section A extends from the top surface of the steel-concrete short column A for connecting the steel sections.
[0005] Preferably, the connecting frame includes positioning plate A, positioning plate B, positioning plate C and positioning plate D, and positioning plate A, positioning plate B, positioning plate C and positioning plate D are respectively enclosed by rotating device A, rotating device B and rotating device C to form a closed space.
[0006] Preferably, the positioning plate C is provided with a positioning block, and the positioning block is provided with a limiting screw hole E. The positioning block fixes the connecting frame by screwing the limiting screw E into the limiting screw hole E.
[0007] Preferably, the surfaces of positioning plates A, B, C, and D are each arrayed with a plurality of limiting screw holes A, B, C, and D. Limiting screw rods A, B, C, and D are respectively threaded into the limiting screw holes A, B, C, and D. The steel-concrete short column A has a plurality of threaded grooves, and the limiting screw rods A, B, C, and D extend into the threaded grooves to fix the connecting frame.
[0008] Preferably, a rubber gasket is fixed inside the H-shaped groove to improve the sealing between the steel-concrete short column A and the steel-concrete short column B.
[0009] Preferably, the positioning plate A in the connecting frame is cast inside the steel-concrete short column A and is embedded and connected to the steel-concrete short column A.
[0010] This utility model discloses the following technical advantages: In use, when splicing steel-concrete short columns A and B, the top steel section B of steel-concrete short column B is inserted into the H-shaped groove at the bottom of steel-concrete short column A, and then fixed using a connecting frame. This type of prefabricated, connectable steel-concrete short column has a relatively small volume compared to the overall column, reducing the risk of damage from impacts during transportation of prefabricated reinforced concrete columns. Furthermore, by using steel sections instead of reinforcing bars, it overcomes the problem of reduced seismic performance caused by the heavy weight of reinforced concrete columns. Attached Figure Description
[0011] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a structural schematic diagram of one side of the connecting frame of this utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the other side of the connecting frame of this utility model;
[0015] Figure 4 This is a cross-sectional view of the steel-concrete short column A of this utility model;
[0016] In the diagram: 1. Steel section A; 2. Steel-concrete short column A; 3. Connecting frame; 4. Steel section B; 5. Steel-concrete short column B; 6. Positioning plate A; 7. Positioning plate B; 8. Positioning plate C; 9. Positioning plate D; 10. Limiting screw hole A; 11. Limiting screw hole B; 12. Limiting screw hole C; 13. Limiting screw hole D; 14. Limiting screw A; 15. Limiting screw B; 16. Limiting screw C; 17. Limiting screw D; 18. Limiting screw E; 19. Rotating device A; 20. Rotating device B; 21. Rotating device C; 22. Positioning block; 23. Rubber pad; 24. H-shaped groove; 25. Limiting screw hole E. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0019] Reference Figures 1-4 As shown, this embodiment provides a prefabricated connectable steel-concrete short column, including a steel-concrete short column A2, a steel-concrete short column B5 located below the steel-concrete short column A2, the steel-concrete short column A2 and the steel-concrete short column B5 are fixedly installed together by a connecting frame 3, the bottom surface of the steel-concrete short column A2 has an H-shaped groove 24, the top surface of the steel-concrete short column B5 is fixedly connected to a steel section B4, the steel section B4 extends into the H-shaped groove 24 and is adapted to the H-shaped groove 24, and a short section of steel section A1 extends from the top surface of the steel-concrete short column A2 for connecting the steel sections.
[0020] When using steel-concrete composite short columns A2 and B5, the top steel section B4 of the steel-concrete composite short column B5 is inserted into the H-shaped groove 24 at the bottom of the steel-concrete composite short column A2, and then fixed by the connecting bracket 3. This type of prefabricated, connectable steel-concrete composite short column has a relatively small volume compared to the overall column, reducing the risk of damage from impacts during transportation. Furthermore, the use of steel sections instead of reinforcing bars overcomes the problem of reduced seismic performance caused by the heavy weight of reinforced concrete columns.
[0021] The design is further optimized. The connecting frame 3 includes positioning plates A6, B7, C8, and D9. Positioning plates A6, B7, C8, and D9 are respectively arranged into closed spaces by rotating devices A19, B20, and C21. By rotating rotating devices A19, B20, and C21, positioning plates B7, C8, and D9 are rotated to form closed spaces, thereby facilitating the quick determination of connection positions and the fixation of steel-concrete short columns A2 and B5.
[0022] The design is further optimized by installing a positioning block 22 on the positioning plate C8. The positioning block 22 has a limiting screw hole E25. The positioning block 22 is screwed into the limiting screw hole E25 via a limiting screw E18 to fix the connecting frame 3. Inserting the limiting screw E18 into the limiting screw hole E25 in the positioning block 22 facilitates the connection between the steel-concrete short column A2 and the steel-concrete short column B5.
[0023] Further optimizing the design, positioning plates A6, B7, C8, and D9 are each arrayed with several limiting screw holes A10, B11, C12, and D13. Limiting screw rods A14, B15, C16, and D17 are threaded into the limiting screw holes A10, B11, C12, and D13, respectively. Several threaded grooves are formed on the steel-concrete short column A2, and the limiting screw rods A14, B15, C16, and D17 extend into the threaded grooves to fix the connecting frame 3. Limiting screw A14 is inserted into the threaded groove on the surface of positioning plate A6 and steel-concrete short column A2; limiting screw B15 is inserted into the limiting screw hole B11 on the surface of positioning plate B7; limiting screw C16 is inserted into the limiting screw hole C12 on the surface of positioning plate C8; and limiting screw D17 is inserted into the limiting screw hole D13 on the surface of positioning plate D9, thereby improving the stability of the connection between steel-concrete short column A2 and steel-concrete short column B5.
[0024] To further optimize the design, a rubber gasket 23 is fixed inside the H-shaped groove 24 to improve the sealing between the steel-concrete short column A2 and the steel-concrete short column B5. During use, when the steel section B4 at the top of the steel-concrete short column B5 is inserted into the H-shaped groove 24 at the bottom of the steel-concrete short column A2, the rubber gasket 23 inside the H-shaped groove 24 improves the sealing between the connection between the steel-concrete short column A2 and the steel-concrete short column B5.
[0025] Further optimizing the design, the positioning plate A6 in the connecting frame 3 is cast inside the steel-concrete short column A2 and embedded therein. Casting the positioning plate A6 inside the steel-concrete short column A2 facilitates rapid assembly. Since the positioning plate A6 is embedded in the steel-concrete short column A2, rotating devices A19, B20, and C21 then bring the positioning plates B7, C8, and D9 into contact with the four sides of the steel-concrete short column, quickly determining the connection positions and facilitating smooth installation.
[0026] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 utility model 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 utility model.
[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A fabricated connectable steel reinforced concrete short column, characterized by: The utility model provides a type steel concrete short column A (2) below is equipped with type steel concrete short column B (5), type steel concrete short column A (2) and type steel concrete short column B (5) are fixedly installed together through connecting frame (3), type steel concrete short column A (2) bottom surface is equipped with H type groove (24), type steel concrete short column B (5) top surface is fixedly connected with type steel B (4), type steel B (4) extends into H type groove (24) with H type groove (24) is adapted, type steel concrete short column A (2) top surface extends a section for type steel short column connection type steel A (1).
2. The fabricated connectable steel reinforced concrete short column according to claim 1, characterized in that: The connecting frame (3) includes positioning plate A (6), positioning plate B (7), positioning plate C (8) and positioning plate D (9), the positioning plate A (6), the positioning plate B (7), the positioning plate C (8), the positioning plate D (9) are enclosed by rotating device A (19), rotating device B (20) and rotating device C (21) respectively.
3. The fabricated connectable steel reinforced concrete short column according to claim 2, characterized in that: The positioning plate C (8) is provided with a positioning block (22), and the positioning block (22) is provided with a limiting screw hole E (25).
4. The fabricated connectable steel reinforced concrete short column according to claim 2, wherein: The positioning plate A (6), the positioning plate B (7), the positioning plate C (8) and the positioning plate D (9) are provided with a plurality of limiting screw holes A (10), limiting screw holes B (11), limiting screw holes C (12) and limiting screw holes D (13) on the surfaces, respectively, and the limiting screw holes A (10), the limiting screw holes B (11), the limiting screw holes C (12) and the limiting screw holes D (13) are respectively screwed with limiting screw rods A (14), limiting screw rods B (15), limiting screw rods C (16) and limiting screw rods D (17), a plurality of threaded grooves are formed in the type steel concrete short column A (2), and the limiting screw rods A (14), the limiting screw rods B (15), the limiting screw rods C (16) and the limiting screw rods D (17) extend into the threaded grooves to fix the connecting frame (3).
5. The fabricated connectable steel reinforced concrete short column according to claim 1, wherein: The H-shaped groove (24) is fixed with a rubber pad (23) for improving the sealing between the type steel concrete short column A (2) and the type steel concrete short column B (5).
6. The fabricated connectable steel reinforced concrete short column according to claim 2, wherein: The positioning plate A (6) in the connecting frame (3) is cast in the type steel concrete short column A (2) and is inlaidly connected with the type steel concrete short column A (2).