Connecting structure of convex precast slabs
By adopting the connecting structure of convex prefabricated plates and using the design of grooves and stressed steel bars on the top of the plate, the problems of large casting operations and temporary support during the installation of existing prefabricated plates are solved, and a more solid and efficient connection is achieved.
Patent Information
- Application Number
- CN202421831361.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing prefabricated plates require a lot of pouring operations and temporary support during the installation process, which increases the construction difficulty and workload.
The connecting structure of convex prefabricated plates is adopted. By setting convex prefabricated plates above the hollow inner wall and surrounding the two prefabricated plates, the stressed steel bars on the top of the plate are extended into the grooves, and connecting steel bars are set on the stressed steel bars on the top of the plate are poured concrete covered steel bars to strengthen the connection.
The pouring operation volume is reduced, temporary support is avoided during the pouring process, and the connection reliability between prefabricated plates is improved.
Smart Images
Figure CN222923932U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of assembled concrete structures, in particular to a connection structure of a convex precast slab. Background Art
[0002] With the development of building industrialization, more and more buildings are constructed in an assembled manner, and precast slabs, as the main precast components, are playing an increasingly important role. However, there are still many problems in the use of precast slabs at present. One of them is that since the precast slab is a cuboid and one end of it is directly connected to the hollow inner wall on site, in order to maintain the connection stability, it is necessary to completely submerge one end of the precast slab with concrete at the construction site and continuously pour it, so that the exposed steel bars at the top of the precast slab are submerged by the concrete, and a pouring layer is formed above the precast slab. In this way, the on-site pouring workload is relatively large.
[0003] The second is that since the precast slab is a cuboid, during the connection with the hollow inner wall, the interval between two precast slabs is determined by the thickness of the hollow wall, resulting in a short distance for leading out the steel bars, thus causing the splicing between the two precast slabs to be unreliable. If it is placed on the hollow wall like this and waiting for pouring, it is necessary to set up a temporary support under the other end of the precast slab to avoid tipping during the pouring process, which undoubtedly increases the construction difficulty of the on-site workers. Summary of the Utility Model
[0004] Aiming at the deficiencies in the prior art, the utility model provides a connection structure of a convex precast slab, which solves the problems of large pouring workload and the need to use temporary supports during the installation of precast slabs in the prior art.
[0005] According to the technical solution of the utility model, a connection structure of a convex precast slab is proposed, which includes a vertically arranged hollow inner wall and a pair of convex precast slabs located above the hollow inner wall. A groove is enclosed between the two convex precast slabs and the hollow inner wall. The convex precast slab is further provided with a top slab stressed steel bar extending into the groove, and a plurality of connecting steel bars are arranged on the top slab stressed steel bar. Concrete is also poured in the groove, and the concrete covers the above-mentioned top slab stressed steel bar and connecting steel bars.
[0006] The technical principle of the present utility model is as follows: First, inspect the convex precast slab components and the hollow inner wall to determine the installation points. Then, directly hoist the two connected convex precast slabs above the hollow inner wall. At this time, since there is not only a side between the two convex precast slabs that can be directly connected through the top reinforcement bars of the slab, but also a space for setting connecting steel bars can be left in the groove formed by the butt joint between the upper parts of the two convex precast slabs, strengthening the connection between the two convex precast slabs. Therefore, no temporary support is required. Subsequently, the operator ties additional steel bars, and after the hollow inner wall and the convex precast slab are firmly connected, concrete is evenly poured at the connection between the convex precast slab and the hollow inner wall. Since a groove will surely be formed in the middle when the two convex precast slabs are connected, there is no need to pour a whole layer on the convex precast slab, and only the formed groove needs to be filled, reducing the pouring workload. After the concrete solidifies, the installation of the convex precast slab can be completed. In this way, the problems existing in the prior art, such as the large pouring workload required during the installation of precast slabs and the need to use temporary supports, are solved.
[0007] Compared with the prior art, the present utility model has the following beneficial effects: By changing the precast slab to a convex structure, when the two precast slabs are connected, only the groove formed between them needs to be poured instead of forming a complete pouring layer, greatly reducing the pouring volume. On the other hand, since there is enough space between the upper parts of the convex precast slabs, connecting steel bars can be set above the top reinforcement bars of the slab, strengthening the connection reliability between the precast slabs and avoiding the setting of temporary supports under the other end of the precast slab during the pouring process. In this way, the problems existing in the prior art, such as the large pouring workload required during the installation of precast slabs and the need to use temporary supports, are solved. Description of the Drawings
[0008] Figure 1 It is a top view structural schematic diagram of the convex precast slab of the embodiment of the present utility model.
[0009] Figure 2 It is a front view structural schematic diagram of the convex precast slab of the embodiment of the present utility model.
[0010] Figure 3 It is a structural schematic diagram of the connection method between the convex precast slab and the hollow inner wall of the embodiment of the present utility model.
[0011] Figure 4 It is a top view schematic diagram of the lap joint of the connecting steel bars of the embodiment of the present utility model.
[0012] Figure 5 It is a structural schematic diagram of the connection method between the convex precast slab and the hollow outer wall of the embodiment of the present utility model
[0013] In the above-mentioned drawings: 1. Hollow inner wall; 2. Convex precast slab; 3. Top slab stress reinforcement; 4. Connecting reinforcement; 401. Transverse distribution reinforcement; 402. Longitudinal stress reinforcement; 5. Concrete; 6. Embedded implanted bar; 7. Additional reinforcement; 8. Hollow outer wall. Detailed implementation mode
[0014] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0015] The technical solution in the present utility model is further described below in conjunction with the drawings and embodiments.
[0016] As Figures 1-4 shown, the embodiment of the present utility model proposes a connection structure of a convex precast slab, which includes a vertically arranged hollow inner wall 1 and a pair of convex precast slabs 2 located above the hollow inner wall 1. The convex precast slab 2 has a convex structure. A groove is formed by enclosing between the two convex precast slabs 2 and the hollow inner wall 1. The convex precast slab 2 is also provided with top slab stress reinforcement 3 extending into the groove. A number of connecting reinforcements 4 are further arranged on the top slab stress reinforcement 3. Concrete 5 is also poured in the groove, and the concrete 5 covers the top slab stress reinforcement 3 and the connecting reinforcements 4.
[0017] Specific operation process: First, check the convex precast slab 2 components and the hollow inner wall 1 to determine the installation points. Then, directly hoist the two connected convex precast slabs 2 above the hollow inner wall 1. At this time, since there is not only a side between the two convex precast slabs 2 that can be directly connected through the top slab stress reinforcement 3, but also a space for setting the connecting reinforcement 4 can be left in the groove formed between the protruding parts of the two convex precast slabs 2, strengthening the connection between the two convex precast slabs 2. Therefore, no temporary support is required. Further, the operator then binds the additional reinforcement 7, and after the hollow inner wall 1 and the convex precast slab 2 are firmly connected, concrete 5 is evenly poured at the connection of the above-mentioned convex precast slab 2 and the hollow inner wall 1. Since a groove will surely be formed in the middle when the two convex precast slabs 2 are connected, there is no need to pour another layer on the convex precast slab 2, reducing the pouring workload. After the concrete 5 solidifies, the installation of the convex precast slab 2 can be completed. By changing the precast slab into a convex structure, only the groove formed between the two precast slabs needs to be poured when connecting the two precast slabs, rather than necessarily forming a new pouring layer, greatly reducing the pouring volume. On the other hand, since the connecting reinforcement 4 is also provided above the top slab stress reinforcement 3 between the convex precast slabs 2, the connection reliability between the precast slabs is strengthened, avoiding the need to set a temporary support under the other end of the precast slab during the pouring process. In this way, the problems existing in the prior art, such as the large pouring workload required during the installation of the precast slab and the need to use temporary supports, are solved.
[0018] In a specific exemplary solution, as Figures 3-4 shown, a connection structure of a convex precast slab, the connecting reinforcement 4 includes a plurality of horizontally distributed bars 401 erected above the top slab stress reinforcement 3, and the plurality of horizontally distributed bars 401 are perpendicular to the top slab stress reinforcement 3. A plurality of longitudinally stressed bars 402 parallel to the top slab stress reinforcement 3 are also erected above the horizontally distributed bars 401. In this solution, the horizontally distributed bars 401 and the longitudinally stressed bars 402 on the top slab stress reinforcement 3 protruding from the convex precast slab 2 are used to form the connecting reinforcement 4. The connecting reinforcement 4 is arranged in the groove formed at the connection of the two convex precast slabs 2, which can further strengthen the connection between the two convex precast slabs 2, making their connection more firm and avoiding the use of temporary supports during the pouring process.
[0019] In a specific exemplary solution, as Figures 3-4 shown, a connection structure of a convex precast slab, the horizontally distributed bars 401 below the two ends of the longitudinally stressed bars 402 connect the top slab stress reinforcements 3 of the two convex precast slabs 2. In this solution, the horizontally distributed bars 401 are used to connect the top slab stress reinforcements 3 of the two convex precast slabs 2, making the connection between the two convex precast slabs 2 more reliable.
[0020] In a specific exemplary solution, as Figure 3As shown in the figure, for a connection structure of convex precast slabs, embedded reinforcing bars 6 perpendicular to the convex precast slabs 2 are also installed in the concrete 5 at the middle position of the connection between the two convex precast slabs 2 and the hollow interior wall 1. One end of the embedded reinforcing bar 6 away from the longitudinal stressed bar 402 is inserted into the interior of the hollow interior wall 1. In this solution, the embedded reinforcing bar 6 inserted into the hollow interior wall 1 is buried by the concrete 5, which can strengthen the connection between the concrete 5 and the hollow interior wall 1.
[0021] In a specific exemplary solution, as Figure 3 shown in the figure, for a connection structure of convex precast slabs, several additional reinforcing bars 7 are buried on both sides of the embedded reinforcing bar 6. One end of the additional reinforcing bar 7 is tied to the longitudinal stressed bar 402, and the other end is arranged inside the hollow interior wall 1, and several of the additional reinforcing bars 7 are perpendicular to the top slab stressed bar 3 and are arranged at equal intervals. In this solution, one end of the additional reinforcing bar 7 is tied to the longitudinal stressed bar 402, and the other end is arranged in the hollow interior wall 1, and the longitudinal stressed bar 402 is connected to the top slab stressed bar 3. Therefore, the additional reinforcing bar 7 strengthens the connection between the convex precast slab 2 connecting the top slab stressed bar 3 and the hollow interior wall 1, making it more reliable and meeting the requirements for the anchorage of stressed bars in the code.
[0022] In a specific exemplary solution, as Figure 3 shown in the figure, for a connection structure of convex precast slabs, the additional reinforcing bar 7 is parallel to the longitudinal stressed bar 402 and is symmetrically arranged with the two sides of the embedded reinforcing bar 6 as the center. In this solution, tying the additional reinforcing bar 7 parallel to the longitudinal stressed bar 402 can strengthen the connection between the convex precast slab 2 and the hollow interior wall 1, and the symmetrical arrangement with the two sides of the embedded reinforcing bar 6 as the center can ensure the balanced stress of the convex precast slabs 2 at both ends during the connection process, and can be more stably connected above the hollow interior wall 1.
[0023] In another specific exemplary solution, as Figure 5 shown in the figure, for a connection structure of convex precast slabs, including a hollow exterior wall 8, the convex precast slab 2 is fixedly installed on one side of the top surface of the hollow exterior wall 8 through the concrete 5 and the longitudinal stressed bar 402 arranged in the concrete 5, and the longitudinal stressed bar 402 is located on the side of the embedded reinforcing bar 6 close to the convex precast slab 2 and is fixedly connected to the embedded reinforcing bar 6. In this solution, the convex precast slab 2 can also be connected to the hollow exterior wall 8. Although there is no longer the mutual connection between the convex precast slabs 2 to balance the placement of the convex precast slabs 2 on the hollow exterior wall 8, the amount of work during pouring can still be reduced by only pouring the groove at the connection between the convex precast slab 2 and the hollow exterior wall 8 when pouring the concrete 5.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model 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 utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.
Claims
1. A connection structure of a convex prefabricated panel, characterized in that: The invention comprises a vertically arranged hollow inner wall (1), and a pair of convex prefabricated panels (2) located above the hollow inner wall (1), wherein the convex prefabricated panels (2) are convex structures, and a groove is arranged between the two convex prefabricated panels (2) and the hollow inner wall (1), and the convex prefabricated panels (2) are also provided with a plate top stress-bearing steel bar (3) extending into the groove, and a plurality of connecting steel bars (4) are also arranged on the plate top stress-bearing steel bar (3), and concrete (5) is poured in the groove, and the concrete (5) covers the plate top stress-bearing steel bar (3) and the connecting steel bars (4).
2. A connection structure of convex prefabricated panels as claimed in claim 1, characterized in that: The connecting steel bars (4) include a plurality of transverse distribution bars (401) arranged above the slab top stress-bearing steel bars (3), and the plurality of transverse distribution bars (401) are perpendicular to the slab top stress-bearing steel bars (3), and a plurality of longitudinal stress-bearing bars (402) are arranged above the transverse distribution bars (401) and are parallel to the slab top stress-bearing steel bars (3).
3. A connection structure of convex prefabricated panels as claimed in claim 2, characterized in that: The transverse distribution bars (401) below the two ends of the longitudinal force-bearing bars (402) connect the exposed parts of the top force-bearing steel bars (3) in the two convex prefabricated panels (2).
4. A connection structure of convex prefabricated panels as claimed in claim 3, characterized in that: Pre-embedded reinforcement bars (6) perpendicular to the convex prefabricated panels (2) are also installed in the concrete (5) at the middle position of the connection between the two convex prefabricated panels (2) and the hollow inner wall (1), and the end of the pre-embedded reinforcement bars (6) facing away from the longitudinal force-bearing bars (402) is inserted into the interior of the hollow inner wall (1).
5. A connection structure of convex prefabricated panels as claimed in claim 4, characterized in that: A plurality of additional steel bars (7) are also embedded on both sides of the pre-embedded reinforcement (6), one end of the additional steel bar (7) is tied to the longitudinal force-bearing reinforcement (402), and the other end is arranged inside the hollow inner wall (1), and the plurality of additional steel bars (7) are perpendicular to the slab top force-bearing reinforcement (3) and are arranged equidistantly.
6. A connection structure of convex prefabricated panels as claimed in claim 5, characterized in that: The additional steel bars (7) are parallel to the longitudinal force-bearing bars (402) and are symmetrically arranged with the two sides of the pre-embedded reinforcement bars (6) as the center.
7. A connection structure of convex prefabricated panels as claimed in claim 6, characterized in that: It comprises a hollow outer wall (8), wherein the convex prefabricated panel (2) is fixedly mounted on one side of the top surface of the hollow outer wall (8) by means of concrete (5) and longitudinal force-bearing ribs (402) arranged in the concrete (5), and the longitudinal force-bearing ribs (402) are located on a side of the pre-embedded reinforcement (6) close to the convex prefabricated panel (2), and are fixedly connected to the pre-embedded reinforcement (6).