PC floor slab joint pouring structure
By designing interconnected upper and lower chamber structures in prefabricated floor slabs and using formwork components to provide stable support, the problem of mold explosion under concrete in prefabricated floor slabs is solved, and construction efficiency and forming quality are improved.
Patent Information
- Application Number
- CN202421421254.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In prefabricated floor slabs, the concrete in the poured chamber will have a downward-hanging and blasting due to gravity factors, resulting in uneven elevation when manually chiseling later, affecting the slab joints and forming quality.
A PC floor slab slab-stitching cast structure is designed, adopting an interconnected upper chamber and a lower chamber structure. The width of the lower chamber is greater than the width of the upper chamber. The upper part of the template assembly encloses the upper chamber, and the sides of the lower formwork part protrude and abuts under the PC floor, providing a stable support structure.
Through this structure, the need for manual chiseling and removing molded concrete is reduced, the construction difficulty is reduced, the overall construction efficiency is improved, labor costs are saved, and the sensory forming quality of floor slabs is improved, ensuring acceptance requirements.
Smart Images
Figure CN222649438U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of building construction, and in particular to a prefabricated floor slab joint casting structure. Background Art
[0002] According to the national construction industry's development trend towards industrialization, most of the current construction projects use prefabricated components for beams (PC), floor slabs (PC), stairs (PC), walls (ALC), etc. Prefabricated prefabricated floor slabs (PC floor slabs) are designed to avoid painting, and the original intention of the process is to achieve one-time molding of the board surface appearance and flatness.
[0003] In the related art, steel bars are arranged at intervals on the opposite side walls of two adjacent PC floor slabs, a pouring chamber for pouring concrete is left between the two floor slabs, the steel bars are located in the pouring chamber, and a pouring formwork for sealing the pouring chamber is set up under the PC floor slab. After the concrete poured later solidifies, it forms a post-cast joint together with the steel bars, thereby connecting the two PC floor slabs into a whole.
[0004] In view of the above-mentioned related technologies, the concrete in the pouring chamber will inevitably hang down due to gravity. The exploded concrete needs to be manually chiseled out after solidification, and the manual chiseling method may cause uneven elevations on both sides of the post-casting strip, thereby reducing the visual quality of the floor slab joints and even failing to meet the acceptance requirements. Utility Model Content
[0005] In order to improve the problem of artificially chiseling out the explosive formwork concrete affecting the sensory forming quality, the present application provides a PC floor slab seam casting structure.
[0006] The PC floor slab joint casting structure provided in this application adopts the following technical solution:
[0007] A PC floor joint casting structure, comprising a PC floor and a formwork assembly, wherein a casting chamber is left between two adjacent PC floor panels, wherein the casting chamber comprises an upper chamber for casting concrete and a lower chamber for providing a hanging space for concrete, wherein the width of the lower chamber is greater than the width of the upper chamber;
[0008] The upper part of the formwork assembly is arranged in the lower chamber to close the upper chamber, and the formwork assembly is received between two adjacent PC floor slabs so that the two PC floor slabs are in the same horizontal plane.
[0009] By adopting the above technical solution, the formwork assembly is connected between the two PC floor slabs, so that the two PC floor slabs are on the same horizontal plane, keeping the floor slab flat. Since the phenomenon of hanging formwork is inevitable, the casting chamber is set as an upper chamber and a lower chamber structure that are interconnected, and the lower chamber provides a hanging space for concrete. After the concrete solidifies, during the painting process of the wall panel, the uneven parts in the lower chamber can be filled, reducing the need for manual chiseling of the exploded concrete, reducing the difficulty of construction, improving the overall construction efficiency, and saving labor costs. Since there is no need to manually chisel the exploded concrete, the problem of uneven elevation on both sides of the poured concrete caused by improper manual operation is also avoided, so that the sensory forming quality of the floor slab joints is improved, thereby meeting the acceptance requirements.
[0010] Further, the template assembly has an upper template portion and a lower template portion, and the upper template portion is located in the lower chamber;
[0011] The edges on both sides of the lower template part protrude from the edges of the upper template part and respectively abut under the two PC floor slabs to close the casting chamber.
[0012] By adopting the above technical solution, the edges of the lower template part protrude from the edges of the upper template part and abut against the bottom of the two PC floor slabs respectively, ensuring that the casting chamber is closed, thereby ensuring the casting quality. The lower template part forms a more stable support structure between the template assembly and the PC floor slab, reducing casting problems caused by template displacement or deformation, and improving the stability of the entire structure. The close contact between the template assembly and the PC floor slab effectively reduces the problem of concrete leakage caused by gaps, and further ensures the sealing of the casting chamber.
[0013] Furthermore, the thickness of the upper template portion is equal to the height of the lower chamber.
[0014] By adopting the above technical solution, the thickness of the upper template is equal to the height of the lower chamber, so that the upper template can be completely embedded in the lower chamber, ensuring that the upper part of the casting chamber is closed. Since the height of the upper template matches that of the lower chamber, the poured concrete can be evenly distributed in the upper chamber, avoiding local accumulation and unevenness caused by hanging concrete, and ensuring the casting quality. Since the height of the upper template matches that of the lower chamber, no additional adjustment or filling is required when installing the upper template, simplifying the construction process.
[0015] Furthermore, the upper template portion and the lower template portion are fixedly connected.
[0016] By adopting the above technical solution, the upper template part and the lower template part are fixedly connected to form a whole, thereby improving the overall rigidity and stability of the template assembly, effectively preventing the template from deforming or shifting during the pouring process, and ensuring the accuracy and quality of the pouring.
[0017] Furthermore, the thickness of the upper template portion is the same as the thickness of the lower template portion.
[0018] By adopting the above technical solution, the thickness of the upper template part and the lower template part are the same, and the two can withstand similar pressure and load, thereby improving the structural strength of the entire template assembly, which helps to ensure the stability and safety of the template during the pouring process. Since the thickness of the upper template part and the lower template part is the same, the two can be processed with the same raw material plate, which saves costs and is also conducive to achieving the unification and standardization of the template assembly.
[0019] Furthermore, a support assembly is arranged below the formwork assembly, and the support assembly includes a crossbeam and at least two support uprights, the support uprights are symmetrically arranged below the lower formwork portion, and the crossbeam is fixedly connected above the two support uprights to support the formwork assembly.
[0020] By adopting the above technical solution, the support poles and beams constitute a support assembly, which provides stable support for the formwork assembly and prevents the formwork from being deformed or shifted due to uneven force during the pouring process. The number and layout of the support poles can be adjusted according to specific engineering requirements and the size of the formwork assembly. In practical applications, the appropriate number and layout of the support poles can be determined based on experience or calculation. The specifications and sizes of the beams also need to be selected according to the actual situation of the formwork assembly to ensure that they can support the formwork assembly and remain stable.
[0021] Furthermore, a pad block is provided above the cross beam, and the pad blocks are provided in a plurality and are arranged at intervals along the length direction of the cross beam, and each of the pad blocks abuts against the bottom of the lower template portion.
[0022] By adopting the above technical solution, the pads can serve as additional support points to further increase the support stability under the formwork assembly, and prevent the formwork from being deformed or displaced due to uneven force during the pouring process. The pads are arranged at intervals along the length of the beam, which helps to improve the stress distribution under the formwork assembly, prevent damage or deformation of the formwork caused by excessive local stress, and increase the service life of the formwork. The height, size, number and spacing of the pads can be adjusted according to the size of the specific formwork, so that the support assembly can adapt to the needs of building formworks at different heights.
[0023] Furthermore, the height of the upper chamber is greater than the height of the lower chamber.
[0024] By adopting the above technical solution, the height setting of the upper chamber is limited so that the concrete layer after pouring meets the thickness requirements, which helps to enhance the structural strength of the PC floor slab joints and improve the bearing capacity and stability of the entire structure. The increase in the height of the upper chamber allows more space for the concrete to flow and distribute during pouring, which helps to reduce the resistance and internal pressure of the concrete during the pouring process, thereby optimizing the flow performance of the concrete and ensuring that the concrete can fill the entire pouring area more evenly.
[0025] In summary, the present application includes at least one of the following beneficial technical effects:
[0026] 1. The pouring chamber is set as an upper chamber and a lower chamber structure that are interconnected. The lower chamber is used to provide a hanging space for the concrete, which reduces the need for manual chiseling of the blasting concrete in the later stage, reduces the construction difficulty, and thus improves the overall construction efficiency. It not only saves labor costs, but also avoids the problem of uneven elevation on both sides of the poured concrete caused by improper manual operation;
[0027] 2. The thickness of the upper formwork matches the height of the lower chamber to ensure that the upper part of the casting chamber is closed, so that the poured concrete can be evenly distributed in the upper chamber, avoiding local accumulation and unevenness caused by hanging concrete, and ensuring the casting quality;
[0028] 3. The support poles and beams provide stable support for the formwork assembly, and the pads serve as additional support points to increase the support stability under the formwork assembly and prevent the formwork from deformation or displacement due to uneven force. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a schematic diagram of the cross-sectional structure of a PC floor slab joint casting structure according to an embodiment of the present application.
[0030] Figure 2 It is a schematic diagram of the structure in which the template assembly abuts against the bottom of the PC floor in an embodiment of the present application.
[0031] Figure 3 It is a schematic diagram of the structural explosion of the formwork assembly and the PC floor in the embodiment of the present application.
[0032] Figure 4 It is a schematic diagram of the structure of the support assembly in an embodiment of the present application.
[0033] Explanation of the reference numerals: 1. PC floor slab; 2. Formwork assembly; 21. Upper formwork part; 22. Lower formwork part; 3. Casting chamber; 31. Upper chamber; 32. Lower chamber; 4. Support assembly; 41. Crossbeam; 42. Supporting pole; 43. Pad; 5. Rebar; 6. Post-cast strip. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-4 And embodiments, the present application is further described in detail.
[0035] The embodiment of the present application discloses a PC floor joint casting structure. The words such as "upper" and "lower" used to express the position relationship in the embodiment are all based on the placement and installation position of the PC floor joint casting structure when it is in a normal use state.
[0036] Reference Figure 1 The PC floor joint casting structure includes a PC floor 1, a formwork assembly 2 and a support assembly 4. A casting chamber 3 for casting concrete is reserved between two adjacent PC floor slabs 1. Steel bars 5 are arranged opposite to and spaced apart between the two adjacent floor slabs. Each steel bar 5 is bent in a roundabout shape. When the cast concrete solidifies, the concrete and the steel bars 5 together form a post-casting strip connecting the two floor slabs.
[0037] Reference Figure 2 and Figure 3 The casting chamber 3 includes an upper chamber 31 and a lower chamber 32 which are interconnected, and the gap between two adjacent PC floor slabs 1 is the upper chamber 31. In this embodiment, a prefabricated groove is provided below the PC floor slab 1 and the side close to each other, and the lower chamber 32 is formed between the opposite inner walls of the two prefabricated grooves. The upper and lower chambers 32 are arranged in a convex shape, and the height of the upper chamber 31 is greater than that of the lower chamber 32, and the steel bars 5 are located in the upper chamber 31.
[0038] The formwork assembly 2 has an upper formwork portion 21 and a lower formwork portion 22 that are fixedly connected, and the upper formwork portion 21 is located at a middle position above the lower formwork portion 22, so that the two sides of the lower formwork portion 22 protrude from the two sides of the upper formwork portion 21. The thickness of the upper formwork portion 21 and the lower formwork portion 22 are the same, and the thickness of the upper formwork portion 21 is equal to the height of the lower chamber 32. When the upper formwork portion 21 is installed in the lower chamber 32, the two sides of the lower formwork portion 22 can abut against the bottom of the two PC floor slabs 1.
[0039] Reference Figure 1 and Figure 4 In this embodiment, a support assembly 4 is arranged below the formwork assembly 2, and the support assembly 4 includes a crossbeam 41, support vertical rods 42 and pads 43. There are a plurality of support vertical rods 42, which are symmetrically arranged below the lower formwork portion 22. Each support vertical rod 42 is arranged perpendicular to the ground, and the crossbeam 41 is fixedly connected above the two support vertical rods 42. There are a plurality of pads 43, which are arranged at intervals along the length direction of the crossbeam 41. Each pad 43 abuts between the crossbeam 41 and the lower formwork portion 22, forming a supporting effect on the formwork assembly 2. The height, size, number and spacing of the pads 43 can be adjusted according to the size of the specific formwork, so that the support assembly 4 can adapt to the needs of formwork construction of different heights.
[0040] The implementation principle of the PC floor joint casting structure of the embodiment of the present application is as follows: the structure mainly includes a PC floor 1, a formwork assembly 2 and a support assembly 4. The casting chamber 3 includes an upper chamber 31 and a lower chamber 32, the upper chamber 31 is the gap between two adjacent PC floor slabs 1, and the lower chamber 32 is formed by a prefabricated groove under the PC floor 1.
[0041] First, the upper formwork part 21 of the formwork assembly 2 is embedded in the lower chamber 32 to ensure that the two sides of the lower formwork part 22 are tightly abutted against the bottom of the PC floor 1. A support assembly 4 is arranged below the lower formwork part 22 to stably support the formwork assembly 2 below the PC floor 1 through support poles 42, beams 41 and pads 43. Concrete is poured, and after the concrete solidifies, it forms a post-casting strip connecting the two PC floor slabs 1 together with the steel bars 5.
[0042] The concrete in the upper chamber 31 was affected by gravity and the formwork exploded. The lower chamber 32 reserved space for concrete. After the concrete solidified, the hanging concrete in the lower chamber 32 was filled during the floor painting process. Compared with chiseling off the hanging part, this not only improved the flatness, but also reduced the labor processing cost.
[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
[0044] In the description of this embodiment, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.
[0045] Since the embodiments disclosed in this application can be arranged in different directions, the terms indicating directions are only for illustration and should not be regarded as limiting. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
Claims
1. A PC floor joint casting structure, comprising a PC floor (1) and a formwork assembly (2), wherein a casting chamber (3) is left between two adjacent PC floor slabs (1), characterized in that: The pouring chamber (3) comprises an upper chamber (31) for pouring concrete and a lower chamber (32) for providing a hanging space for concrete, wherein the width of the lower chamber (32) is greater than the width of the upper chamber (31); The upper part of the formwork assembly (2) is arranged in the lower chamber (32) to close the upper chamber (31), and the formwork assembly (2) is received between two adjacent PC floor slabs (1) so that the two PC floor slabs (1) are in the same horizontal plane.
2. The PC floor slab joint casting structure according to claim 1 is characterized in that: The template assembly (2) comprises an upper template portion (21) and a lower template portion (22), wherein the upper template portion (21) is located in the lower chamber (32); The edges on both sides of the lower formwork portion (22) protrude from the edges of the upper formwork portion (21) and respectively abut against the bottom of the two PC floor slabs (1) to close the casting chamber (3).
3. The PC floor joint casting structure according to claim 2 is characterized in that: The thickness of the upper template portion (21) is equal to the height of the lower chamber (32).
4. The PC floor joint casting structure according to claim 2 is characterized in that: The upper template portion (21) and the lower template portion (22) are fixedly connected.
5. The PC floor slab joint casting structure according to claim 2 is characterized in that: The thickness of the upper template portion (21) is the same as the thickness of the lower template portion (22).
6. The PC floor joint casting structure according to claim 2 is characterized in that: A support assembly (4) is arranged below the formwork assembly (2), and the support assembly (4) comprises a crossbeam (41) and at least two support uprights (42), wherein the support uprights (42) are symmetrically arranged below the lower formwork portion (22), and the crossbeam (41) is fixedly connected above the two support uprights (42) to support the formwork assembly (2).
7. The PC floor joint casting structure according to claim 6 is characterized in that: A cushion block (43) is also provided above the cross beam (41). The cushion blocks (43) are provided in a plurality and are arranged at intervals along the length direction of the cross beam (41). Each cushion block (43) abuts against the bottom of the lower template portion (22).
8. The PC floor joint casting structure according to claim 1 is characterized in that: The height of the upper chamber (31) is greater than the height of the lower chamber (32).