Laminated slab and steel beam connecting structure
The connection system using bottom connection reinforcement and shear connectors addresses the instability and seismic vulnerability of precast concrete composite slabs by increasing the stability and strength of the composite slab and steel beam interface, thereby reducing separation and enhancing structural integrity and seismic resistance.
Patent Information
- Application Number
- CN202422386471.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The connection between precast concrete composite slabs and steel beams in prefabricated concrete composite floors is problematic, leading to issues such as poor structural integrity, seismic resistance, and increased on-site wet work, with the interface between precast concrete slabs prone to cracks and difficult to secure effectively.
A connection system involving bottom connection reinforcement and shear connectors, including first and second fixed hooks on the bottom connection reinforcement that engage with a shear connector, enhancing the stability and strength of the connection between the composite slab and steel beam.
The proposed connection system increases the stability and strength of the composite slab and steel beam interface, reducing the likelihood of separation and enhancing overall structural integrity and seismic resistance.
Smart Images
Figure CN223103940U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of building construction, and particularly relates to a connection structure for a composite slab and a steel beam. Background Art
[0002] With the requirements of building industrialization put forward by the country, various precast floor slabs emerge in an endless stream. At present, the floor slabs of buildings generally have problems such as poor overall stiffness of the building, poor stability and seismic resistance, low load-bearing capacity, and high cost. It is difficult to take measures at the floor joints in the project, resulting in poor sound insulation effect of the building.
[0003] The precast concrete composite floor slab is one of the most commonly used floor forms in prefabricated steel structure houses and is also the first research content in the current floor system. It has good integrity, crack resistance, seismic resistance, and thermal insulation performance. These series of advantages have made this floor system receive more extensive research and application. However, the precast concrete composite floor slab has the following obvious disadvantages: the connection between the precast bottom slab and the steel beam is the key problem, which affects the performance of their coordinated work; cracks are likely to appear at the joints between the precast bottom slabs; there is still a certain amount of on-site wet work. Summary of the Invention
[0004] In view of this, the purpose of the utility model is to provide a connection structure for a composite slab and a steel beam.
[0005] The connection structure for a composite slab and a steel beam provided by the utility model adopts the following technical solutions:
[0006] A connection structure for a composite slab and a steel beam, comprising a composite layer, a bottom slab, and a steel beam. Two bottom slabs are arranged on the wing plates at the top of the steel beam. Shear connectors are arranged on the wing plates at the top of the steel beam. A first bottom connecting bar is arranged horizontally in the composite layer. One end of the first bottom connecting bar extends to a position near the middle in the composite layer and is provided with a first fixing hook. The first fixing hook bypasses the shear connector and is fixedly connected to the shear connector.
[0007] Further, a second bottom connecting bar is arranged on one side of the composite layer opposite to the first bottom connecting bar. One end of the second bottom connecting bar extends towards the first bottom connecting bar and is provided with a second fixing hook. The second fixing hook bypasses the shear connector and is fixedly connected to the shear connector. The first fixing hook and the second fixing hook are respectively located on both sides of the shear connector.
[0008] Further, an anti-disengagement part is arranged at the top of the shear connector.
[0009] Furthermore, horizontal floor transverse steel bars are arranged along the inner edge of the floor slab. The floor transverse steel bars connect the two floor slabs, and the middle position of the floor transverse steel bars is connected to the shear connectors.
[0010] Furthermore, a third fixing hook fixedly connected to the shear connector is arranged at the middle position of the floor transverse steel bars.
[0011] In summary, the utility model has at least the following beneficial effects: The composite slab and the steel beam are fixedly connected through the bottom connecting bars and the shear connectors, which can increase the stability of the connection between the composite slab and the steel beam. At the same time, the fixing hooks on the bottom connecting bars can increase the connection strength between the bottom connecting bars and the shear connectors, making the connection more stable. Description of the Drawings
[0012] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.
[0013] Description of the reference numerals:
[0014] 1. Composite layer; 11. First bottom connecting bar; 12. First fixing hook; 13. Second bottom connecting bar; 14. Second fixing hook; 2. Floor slab; 21. Floor transverse steel bar; 22. Third fixing hook; 3. Steel beam; 31. Shear connector; 32. Anti-disengagement part. Specific Embodiments
[0015] The following specific examples illustrate the embodiments of the utility model. Those skilled in the art can easily understand the other advantages and effects of the utility model from the content disclosed in this specification. The utility model can also be implemented or applied through different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model.
[0016] The following will further describe the utility model in detail Figure 1 in conjunction with the appended
[0017] An embodiment of the utility model discloses a connection structure between a composite slab and a steel beam. Refer to Figure 1, The connection structure between the composite slab and the steel beam includes a composite layer 1, a bottom plate 2, and a steel beam 3. Two bottom plates 2 are provided on the wing plates at the top of the steel beam 3. Shear connectors 31 are provided on the wing plates at the top of the steel beam 3. A first bottom connecting bar 11 is arranged horizontally in the composite layer 1. One end of the first bottom connecting bar 11 extends to a position near the middle in the composite layer 1 and is provided with a first fixing hook 12. The first fixing hook 12 bypasses the shear connector 31 and is fixedly connected to the shear connector 31; the composite layer 1 and the steel beam 3 are fixedly connected by welding the first bottom connecting bar 11 and the shear connector 31, which can increase the stability of the connection between the composite layer 1 and the steel beam 3. At the same time, the first fixing hook 12 on the first bottom connecting bar 11 can increase the connection strength between the bottom connecting bar 11 and the shear connector 31, reduce the possibility of the first bottom connecting bar 11 falling off from the shear connector 31, and make the connection more stable.
[0018] In this embodiment, a second bottom connecting bar 13 is arranged on one side of the composite layer 1 opposite to the first bottom connecting bar 11. One end of the second bottom connecting bar 13 extends towards the first bottom connecting bar 11 and is provided with a second fixing hook 14. The second fixing hook 14 bypasses the shear connector 31 and is fixedly connected to the shear connector 31. The first fixing hook 12 and the second fixing hook 14 are respectively located on both sides of the shear connector 31. The first fixing hook 12 and the second fixing hook 14 cooperate with each other on both sides of the shear connector 31, increasing the connection strength between the first bottom connecting bar 11, the second bottom connecting bar 13 and the shear connector 31, and making the connection between the first bottom connecting bar 11, the second bottom connecting bar 13 and the shear connector 31 more firm.
[0019] In this embodiment, a anti - detachment part 32 is arranged on the top of the shear connector 31. The anti - detachment part 32 can limit the first fixing hook 12 and the second fixing hook 14 on the shear connector 31, preventing the first fixing hook 12 and the second fixing hook 14 from falling off the shear connector 31.
[0020] In this embodiment, a bottom plate transverse steel bar 21 is arranged horizontally in the bottom plate 2. The bottom plate transverse steel bar 21 connects the two bottom plates 2. The middle position of the bottom plate transverse steel bar 21 is connected to the shear connector 31. The bottom plate 2 is connected to the shear connector 31 through the bottom plate transverse steel bar 21, which can increase the connection strength between the bottom plate 2 and the shear connector 31.
[0021] In this embodiment, a third fixing hook 22 fixedly connected to the shear connector 31 is arranged at the middle position of the bottom plate transverse steel bar 21. The third fixing hook 22 can increase the connection stability between the bottom plate transverse steel bar 21 and the shear connector 31.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.
Claims
1. A connection structure between a laminated slab and a steel beam, characterized in that: It includes a composite layer (1), a bottom plate (2) and a steel beam (3). Two bottom plates (2) are arranged on the flange plates at the top of the steel beam (3). Shear connectors (31) are arranged on the flange plates at the top of the steel beam (3). First bottom connecting bars (11) are arranged horizontally in the composite layer (1). One end of the first bottom connecting bar (11) extends to a position near the middle in the composite layer (1) and is provided with a first fixing hook (12). The first fixing hook (12) bypasses the shear connector (31) and is fixedly connected to the shear connector (31).
2. The connection structure between the laminated slab and the steel beam according to claim 1, wherein: On one side of the first bottom connecting bar (11) in the composite layer (1), a second bottom connecting bar (13) is arranged. One end of the second bottom connecting bar (13) extends towards the first bottom connecting bar (11) and is provided with a second fixing hook (14). The second fixing hook (14) bypasses the shear connector (31) and is fixedly connected to the shear connector (31). The first fixing hook (12) and the second fixing hook (14) are respectively located on both sides of the shear connector (31).
3. The connection structure between the laminated slab and the steel beam according to claim 2, wherein: A anti - detachment part (32) is arranged on the top of the shear connector (31).
4. The connection structure between the laminated slab and the steel beam according to claim 1, characterized in that: Bottom plate transverse steel bars (21) are arranged horizontally in the bottom plate (2). The bottom plate transverse steel bars (21) connect the two bottom plates (2). The middle position of the bottom plate transverse steel bar (21) is connected to the shear connector (31).
5. The connection structure between the laminated slab and the steel beam according to claim 4, characterized in that: A third fixing hook (22) fixedly connected to the shear connector (31) is arranged at the middle position of the bottom plate transverse steel bar (21).