Slab strip formwork reinforcing system between composite floor slabs
By designing aluminum formwork, support pipes, and connecting and reinforcing components, the problems of formwork deformation, grout leakage, and misalignment were solved, achieving stable connection of the formwork and ease of construction, thereby improving construction quality and resource utilization.
Patent Information
- Application Number
- CN202423065855.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-12
AI Technical Summary
During the casting of cast-in-place slabs, the formwork is prone to deformation or displacement, grout leakage and misalignment. The existing formwork reinforcement system is not stable enough in complex construction environments, resulting in poor molding quality.
Vertical support components and connecting reinforcement components, including aluminum formwork, support pipes, T-shaped fasteners, locking components, and plastic plates, provide stable formwork support and grout leakage protection.
It improves the stability of the template, reduces material waste, simplifies subsequent construction processes, and enhances molding quality and resource utilization efficiency.
Smart Images
Figure CN223824588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a reinforcement system for composite floor slabs with formwork strips. Background Technology
[0002] In modern building construction, especially in large-scale buildings, prefabricated assembly structures have been widely used due to their advantages such as high construction efficiency and controllable quality. Among them, composite floor slab structures are a common building form, widely used in the floor slab structures of multi-story buildings. Composite floor slabs are usually composed of precast slabs and cast-in-place slabs. The precast slabs are prefabricated in the factory and transported to the construction site, while the cast-in-place slabs are combined with the precast slabs on the construction site through concrete pouring to form an integral floor slab structure.
[0003] However, during the casting of cast-in-place slabs, especially in the construction of the slab strip area (post-cast strip), the following problems often occur due to the impact force of concrete and casting process issues: Formwork deformation or displacement: Due to the weight of the concrete and the pressure generated during casting, the formwork is prone to deformation or displacement, resulting in poor casting quality in the slab strip area; Grout leakage and misalignment: Due to insufficient formwork support or loose connections between formwork sections, grout leakage may occur during concrete casting, leading to a loose bond between the composite slab and the cast-in-place slab, resulting in misalignment; Insufficient formwork reinforcement: In existing technologies, formwork reinforcement systems often cannot meet the stability requirements in complex construction environments. Especially during construction, unstable support may cause local collapse or poor concrete forming quality. Utility Model Content
[0004] In response to the aforementioned problems such as formwork deformation, grout leakage, and misalignment, this utility model aims to provide a formwork reinforcement system for composite floor slabs. The device of this utility model provides stable formwork support and effective grout leakage prevention through the cooperation of vertical support components and connecting reinforcement components.
[0005] The main idea of the technical solution adopted in this utility model is to achieve a stable connection of the template and ease of construction by using a vertical support component, a connecting and reinforcing component, and a plastic plate design. The vertical support component provides vertical support through the aluminum formwork and support pipes to ensure the stability of the template. The connecting and reinforcing component includes a "T"-shaped fastener, a square tube, and a locking component. The "T"-shaped fastener penetrates through the aluminum formwork and connects with the locking component and the square tube. The connector in the locking component is detachable, allowing for reuse and avoiding material waste. Meanwhile, a slightly narrow plastic plate is provided on the upper part of the aluminum formwork as an isolation layer to prevent misalignment and facilitate template splicing.
[0006] The technical objective of this utility model is achieved through the following technical solution:
[0007] A slab-strip formwork reinforcement system for composite floor slabs includes composite slabs, which include precast slabs and cast-in-place slabs. The system is characterized by further comprising: a vertical support assembly, including an aluminum formwork set along the post-cast strip and a support pipe vertically installed at the lower part of the aluminum formwork; and a connecting reinforcement assembly, including a "T"-shaped fastener and a locking member detachably connected to the "T"-shaped fastener, the locking member locking the connecting reinforcement assembly to the aluminum formwork.
[0008] To achieve the above technical solution, a further preferred solution is: the connecting and reinforcing component also includes a square tube, which is arranged perpendicular to the extension direction of the aluminum mold, and the locking member passes through the square tube and securely connects it to the bottom of the aluminum mold.
[0009] Furthermore, the "T"-shaped fastener includes a horizontal fastener and a vertical fastener connected to the lower part of the horizontal fastener, with the two sides of the horizontal fastener overlapping the precast slabs on both sides of the post-pouring strip.
[0010] Furthermore, the locking component includes a connector, the two ends of which are detachably connected to the lower end of the vertical fixing component and the upper end of the locking rod, respectively.
[0011] Furthermore, according to the above technical solution, the locking component also includes a support component disposed at the lower end of the locking rod for supporting and stabilizing the connection between the locking component and the square tube.
[0012] Furthermore, the locking mechanism also includes an adjusting member located at the lower part of the support member, which locks or releases the support member by rotation.
[0013] Furthermore, it also includes a plastic plate set on the upper part of the aluminum mold.
[0014] By adopting the above technical solution, this utility model has the following technical effects:
[0015] By setting up detachable locking components, the connecting parts in the locking components are designed to be detachable, so that the locking components can be easily removed and reused after construction is completed. This avoids the material waste caused by the need to cut vertical fixing components in traditional reinforcement systems, thereby improving resource utilization efficiency and reducing construction costs.
[0016] By installing plastic panels as an isolation layer, misalignment issues caused by incomplete formwork cleaning or inadequate reinforcement are effectively prevented. Furthermore, after formwork removal, the plastic panels create uniform grooves at the bottom of the floor slab, simplifying subsequent putty application and improving ceiling flatness. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.
[0018] Figure 1This is a cross-sectional view of a panel strip formwork reinforcement system between composite floor slabs according to the present invention;
[0019] Figure 2 This is a schematic diagram of the overall structure of a panel strip formwork reinforcement system between composite floor slabs according to the present invention;
[0020] Figure 3 This is a structural schematic diagram of the connection reinforcement component and the vertical support component of this utility model;
[0021] Figure 4 This is a structural schematic diagram of the locking component of this utility model;
[0022] Figure 5 This is a schematic diagram of the connection between the "T"-shaped fastener and the locking element of this utility model.
[0023] Figure 6 This is an exploded view of the connection between the "T"-shaped fastener and the locking element of this utility model;
[0024] Figure 7 This is an exploded view of the locking component of this utility model;
[0025] In the diagram, 1-composite slab; 11-precast slab; 12-cast-in-place slab; 2-connecting and reinforcing components; 21-"T" type fastener; 211-horizontal fastener; 212-vertical fastener; 22-square tube; 23-locking component; 231-connector; 232-locking rod; 233-support component; 234-adjusting component; 3-vertical support component; 31-aluminum formwork; 32-support tube; 4-plastic sheet. Detailed Implementation
[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, not all embodiments.
[0027] refer to Figure 1-7 This application discloses a slab-strip formwork reinforcement system for composite floor slabs, including a composite slab 1, which includes a precast slab 11 and a cast-in-place slab 12. The cast-in-place slab 12 forms a tight bond with the precast slab 11 during concrete pouring to ensure the stability of the overall structure. It also includes a vertical support component 3, which includes an aluminum formwork 31 set along the post-pouring strip and a support pipe 32 vertically installed at the lower part of the aluminum formwork 31. A connecting reinforcement component 2 includes a "T"-shaped fastener 21 and a locking component 23 detachably connected to the "T"-shaped fastener 21. The locking component 23 locks the connecting reinforcement component 2 to the aluminum formwork 31.
[0028] Specifically, the connecting reinforcement component 2 also includes a square tube 22, which is arranged perpendicular to the extension direction of the aluminum mold 31, and the locking member 23 passes through the square tube 22 and fastens it to the bottom of the aluminum mold 31.
[0029] Specifically, the vertical support assembly 3 provides vertical support for the formwork, ensuring that the formwork does not shift during construction. Specifically, the vertical support assembly 3 includes an aluminum formwork 31 installed along the post-pouring strip and a support pipe 32 vertically installed below the aluminum formwork 31. The aluminum formwork 31 is laid along the direction of the post-pouring strip, ensuring effective support for the entire composite slab 1 structure during concrete pouring. The support pipe 32 is tightly connected to the aluminum formwork 31 and vertically supports it below the aluminum formwork 31, capable of withstanding the vertical pressure generated during concrete pouring and preventing vertical displacement of the formwork.
[0030] like Figure 1-2 The connecting and reinforcing component 2 includes a "T"-shaped fastener 21, a square tube 22, and a locking component 23. The "T"-shaped fastener 21 includes a horizontal fastener 211 and a vertical fastener 212 connected vertically to the lower part of the horizontal fastener 211. The horizontal fastener 211 is a parallel horizontal structure that overlaps on both sides of the precast slab 11 on both sides of the post-cast strip to provide lateral support and stability. The design of the horizontal fastener 211 enables the precast slab 11 to withstand the lateral pressure from the subsequent cast-in-place concrete, ensuring that the precast slab 11 does not move.
[0031] Specifically, the vertical fastener 212 extends vertically from the lower part of the horizontal fastener 211 and is used to pass through other components, providing vertical reinforcement. The vertical fastener 212 passes through the aluminum mold 31 provided in the post-cast strip and is connected to the locking member 23, which is used to lock the square tube 22 onto the aluminum mold 31.
[0032] It is worth noting that the horizontal fastener 211 is made of thick steel bars, whose main function is to provide lateral support and fixation. Therefore, the selection of relatively strong thick steel bars can withstand the lateral pressure generated during concrete pouring and ensure the stability of both sides of the composite slab 1. The vertical fastener 212 is made of thinner steel bars, whose main function is to penetrate the aluminum formwork 31 and cooperate with the locking member 23 to form a vertical reinforcement structure. Since the vertical fastener 212 is mainly responsible for vertical connection, the use of thinner steel bars can ensure the necessary strength without increasing the construction burden, ensuring structural tightness while improving construction flexibility and efficiency.
[0033] like Figure 4The aluminum formwork 31 and the square tube 22 work together. The aluminum formwork 31 is arranged along the post-pouring strip to form the main support structure of the formwork system. The square tube 22 is set perpendicular to the extension direction of the aluminum formwork 31, and the length of the square tube 22 is greater than the width of the aluminum formwork 31, which is used to reinforce and support the aluminum formwork 31. After the vertical fixing member 212 passes through the aluminum formwork 31 and the square tube 22, the stability of the system is further enhanced.
[0034] like Figure 5 The locking member 23 includes a connector 231, with both ends of the connector 231 detachably connected to the lower end of the vertical fixing member 212 and the upper end of the locking rod 232, respectively. The locking member 23 also includes a support member 233 disposed at the lower end of the locking rod 232 for supporting and securing the connection between the locking member 23 and the square tube 22. The locking member 23 also includes an adjusting member 234 disposed below the support member 233, which locks or releases the support member 233 by rotation.
[0035] Specifically, the connector 231 reliably connects the "T"-shaped fastener 21 to the locking rod 232. One end of the connector 231 is detachably connected to the lower end of the vertical fastener 212 of the "T"-shaped fastener 21, and the other end is connected to the upper end of the locking rod 232. This design allows the connector 231 to be quickly assembled and disassembled, facilitating flexible adjustment and installation during construction.
[0036] It is worth noting that after the cast-in-place slab 12 is poured, the connector 231 in the locking member 23, due to its detachable nature, can be easily removed from the vertical fixing member 212. This design allows the locking member 23 to be reused in subsequent construction, effectively avoiding material waste. Traditional slab-and-formwork reinforcement systems typically require cutting the vertical fixing member 212 after construction, while this reinforcement system allows for convenient removal of the locking member without damaging the components, significantly improving the economy of construction and resource utilization.
[0037] Specifically, the locking rod 232 is vertically connected to the lower end of the connector 231. The locking rod 232 has a stable structure and a reasonably designed length to achieve precise connection and support in the composite plate system, thereby enhancing the overall system's robustness. The support member 233 is located at the lower end of the locking rod 232 and is mainly used to support the locking member 23 and securely connect the square tube 22 to the lower part of the aluminum mold 31.
[0038] Specifically, the adjusting component 234 is installed at the lower part of the support component 233 and is locked or released by rotation. This adjusting component 234 can precisely adjust the position of the support component 233 to meet the installation requirements of different floor slabs or formwork. Furthermore, the adjusting component 234 has a locking function; it can be securely locked after being rotated to the designated position to prevent loosening during construction.
[0039] Specifically, the reinforcement system also includes a plastic plate 4 installed on top of the aluminum formwork 12. The plastic plate 4 acts as an isolation layer, preventing direct contact between the aluminum formwork 31 and the cast-in-place slab 12, effectively preventing misalignment caused by incomplete formwork cleaning or inadequate reinforcement. By maintaining the gap between the formwork and the cast-in-place layer during the pouring process, the plastic plate 4 ensures the flatness of the floor slab surface after construction, avoiding irregular steps and thus improving the overall construction quality.
[0040] Without considering construction errors, the thickness of the plastic board 4 design allows for a shallow groove of about 2mm to be formed at the bottom of the floor slab after demolding. Construction workers can directly fill the groove with putty without additional chiseling, simplifying the construction process, improving construction efficiency, and ensuring a smooth and flat finished surface.
[0041] It is worth noting that the width of the plastic plate 4 should generally be slightly narrower than that of the aluminum mold 31. This prevents the plastic plate 4 from extending beyond the edge of the aluminum mold during installation, which would affect the subsequent splicing and alignment of the templates. At the same time, the slightly narrower plastic plate 4 can better fit inside the aluminum mold, making it less prone to displacement, thereby effectively ensuring the uniformity of the groove effect and the stability of the template.
[0042] The workflow of this embodiment is as follows:
[0043] First, during the construction of the composite floor slab, aluminum formwork 31 is installed along the edge of the post-pouring strip. The aluminum formwork 31 is laid along the edge of the precast slab 11 to form the external formwork structure for subsequent cast-in-place concrete, and the vertical support member 4 is placed under the aluminum formwork.
[0044] After the aluminum formwork 31 is installed, the plastic sheet 4 is laid flat on top of the aluminum formwork 31, ensuring that it fits evenly inside the aluminum formwork to avoid unevenness of the cast-in-place slab 12 due to misalignment or gaps. The slightly narrow design of the plastic sheet ensures that it is not exposed after installation, thus not affecting the splicing of other templates or aluminum formwork.
[0045] Next, the T-shaped fastener 21, square tube 22, and locking component 23 are connected to the aluminum formwork 31 according to the design. Ensure that all components of the locking component 23 are securely installed to maintain the stability and support strength of the aluminum formwork 31. After the formwork installation and reinforcement are completed, the concrete for the cast-in-place slab 12 is poured. During the pouring process, the plastic sheet 4 acts as an isolation layer to prevent direct contact between the aluminum formwork 31 and the concrete, avoiding surface contamination and misalignment of the aluminum formwork 31. After the concrete reaches the predetermined strength, the locking component 23 is first removed, and the connecting piece 231 is removed from the vertical fastener 212 so that the locking component 23 can be retained for subsequent construction, reducing material waste.
[0046] Remove the aluminum formwork 31 and the plastic panel 4. At this point, the plastic panel 4 forms a uniform groove of approximately 2mm on the surface of the cast-in-place slab 12, providing a standard base for subsequent ceiling putty application, simplifying the putty application process, and ensuring the flatness of the ceiling. Clean and inspect the removed aluminum formwork 31 and plastic panel 4 to ensure they are intact and meet the requirements for the next construction phase. The cleaned plastic panel 4 can be reused, reducing construction costs and minimizing material waste.
[0047] It should be understood that the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
Claims
1. A slab-strip formwork reinforcement system for composite floor slabs, comprising composite slabs (1), wherein the composite slabs (1) include precast slabs (11) and cast-in-place slabs (12), characterized in that, Also includes: The vertical support assembly (3) includes an aluminum mold (31) arranged along the post-cast strip and a support pipe (32) vertically installed at the bottom of the aluminum mold (31). The connection reinforcement assembly (2) includes a "T" type fastener (21) and a locking member (23) detachably connected to the "T" type fastener (21), the locking member (23) locking the connection reinforcement assembly (2) to the aluminum mold (31).
2. The slab-strip formwork reinforcement system between composite floor slabs according to claim 1, characterized in that, The connecting reinforcement component (2) also includes a square tube (22) which is arranged perpendicular to the extension direction of the aluminum mold (31), and a locking member (23) passes through the square tube (22) and securely connects it to the bottom of the aluminum mold (31).
3. The slab-strip formwork reinforcement system between composite floor slabs according to claim 1, characterized in that, The "T" type fastener (21) includes a horizontal fastener (211) and a vertical fastener (212) connected vertically to the lower part of the horizontal fastener (211). The horizontal fastener (211) overlaps on both sides of the precast slab (11) on both sides of the post-pouring strip.
4. The slab-strip formwork reinforcement system between composite floor slabs according to claim 1, characterized in that, The locking component (23) includes a connector (231), the two ends of which are detachably connected to the lower end of the vertical fixing component (212) and the upper end of the locking rod (232).
5. The slab-strip formwork reinforcement system between composite floor slabs according to claim 4, characterized in that, The locking member (23) also includes a support member (233) disposed at the lower end of the locking rod (232) for supporting and stabilizing the connection between the locking member (23) and the square tube (22).
6. The slab-strip formwork reinforcement system between composite floor slabs according to claim 5, characterized in that, The locking member (23) also includes an adjusting member (234) located at the lower part of the support member (233), which locks or releases the support member (233) by rotation.
7. The slab-strip formwork reinforcement system between composite floor slabs according to claim 1, characterized in that, It also includes a plastic plate (4) set on the upper part of the aluminum mold (31).