Prestressed composite slab member
By connecting the support beams, precast web reinforcement components, and T-shaped rods, the problems of low stiffness and high cost of traditional prestressed composite slab components are solved, achieving efficient construction and cost control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI GENGTIE CONSTRUCTION TECHNOLOGY CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional prestressed composite slab components have low overall stiffness and poor bending performance during construction, are prone to cracking, require a large amount of steel reinforcement, and have high construction costs. Furthermore, the efficiency and cost of bolt connections need to be optimized.
A prestressed composite slab component is designed, which uses a support beam, precast web reinforcement and T-shaped rods connected by a fixing rod. The bottom of the support beam is provided with a pluggable installation hole. After casting, the fixing rod can be pulled out to retrieve the support beam, which reduces the use of tools and the number of nuts and improves processing efficiency.
It improves the overall stiffness and bending resistance of composite slabs, reduces the amount of steel reinforcement, lowers construction and production costs, and simplifies the construction process.
Smart Images
Figure CN224532003U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building materials, and in particular to a prestressed composite slab component. Background Technology
[0002] Traditional prestressed composite slabs, frequently used in the construction industry, reduce wet work steps and formwork during construction, improving construction efficiency. However, traditional composite slabs suffer from drawbacks such as low overall stiffness, poor bending resistance, susceptibility to cracking, high steel reinforcement requirements, and the need for numerous bottom supports. Traditional steel truss composite slab structures experience significant deflection during hoisting, potentially leading to cracking of the substrate. During composite layer construction, extensive bottom supports are necessary to enhance the overall vertical load-bearing capacity of the composite slab, reduce substrate deflection, and prevent cracking. Therefore, traditional composite slab construction requires substantial manpower and material resources, resulting in higher overall construction costs.
[0003] In the prior art, such as the assembly tool truss and the assembly truss composite plate with end diagonal ribs proposed in application number CN202020895717.8, it can be processed in an assembly line. The composite plate components have improved bending strength and high stiffness, and are not prone to excessive deflection deformation. The amount of steel truss used is small, saving a lot of steel. On-site construction does not require the erection of a bottom support frame, which is convenient. The truss support beams can be removed after the concrete is poured and can be reused. However, this technology uses a lot of bolt connections, which needs to be optimized from the perspective of processing efficiency and cost control. Summary of the Invention
[0004] To improve the processing efficiency of precast prestressed composite slab components and composite slabs while controlling costs, this utility model proposes a prestressed composite slab component, the structure of which includes: a support beam, precast web reinforcement components, T-shaped rods, and fixing rods; the lower two sides of the support beam are inclined surfaces, with several assembly grooves along the length direction on the inclined surfaces, and positioning blocks at both ends and the middle of the inclined surfaces, each positioning block having a through hole parallel to the length direction of the support beam; the bottom of the support beam has several mounting holes distributed along the length direction, and the T-shaped rods are inverted and inserted into the mounting holes; the precast web reinforcement components include: connecting blocks, with web reinforcement at the lower part of the connecting blocks, and through holes on the connecting blocks; the connecting blocks are located in the assembly grooves, and the through holes of the connecting blocks and positioning blocks are coaxial and have the same inner diameter; the fixing rods pass through all the connecting blocks and positioning blocks, and both ends of the fixing rods have external threads, and nuts are used to fix both ends of the fixing rods to the positioning blocks.
[0005] Preferably, a positioning ring is provided on the upper part of each side of the T-shaped rod after it is inverted.
[0006] Preferably, the axis of the through hole of the connecting block is located in the plane of the web rib.
[0007] Preferably, the connecting block is a concrete product, and the upper part of the web reinforcement is fixed to the connecting block by anchoring.
[0008] Preferably, the support beam and the assembly groove, mounting hole and positioning block provided thereon are integrally formed.
[0009] This invention replaces the traditional welded and fixed-to-support-beam reinforcing bars with prefabricated reinforcing bar components that can be placed in the assembly slot of the support beam and fixed by fixing rods. T-shaped rods, which can be inserted into mounting holes at the bottom of the support beam for erecting longitudinal reinforcement and anchoring, are also provided. After the concrete is poured to form the composite slab, the nuts at both ends of the fixing rods are unscrewed to remove them, and the support beam is lifted to complete its recycling for later use. This invention eliminates the need for additional tools during assembly, reduces the use of nuts, improves processing efficiency, and saves production costs. Attached Figure Description
[0010] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0011] Figure 1 This is a perspective view of the present utility model.
[0012] Figure 2 This is a front view of the present utility model.
[0013] Figure 3 This is a side view of the present invention.
[0014] Figure 4 This is a three-dimensional view of the supporting beam.
[0015] Figure 5 This is a three-dimensional view of the precast rib reinforcement component.
[0016] In the figure: 1. Support beam; 2. Precast reinforcement; 3. Positioning block; 4. Fixing rod; 5. T-shaped rod; 6. Positioning ring; 7. Mounting hole; 8. Assembly groove; 9. Inclined surface; 21. Connecting block; 22. Reinforcement; 23. Through hole. Detailed Implementation
[0017] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0018] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.
[0021] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0022] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. Example 1
[0023] like Figures 1-5As shown, the prestressed composite slab component of this utility model includes: a support beam 1, precast reinforcing bars 2, T-shaped rods 5, and fixing rods 4. The lower two sides of the support beam 1 are inclined surfaces 9, and several assembly grooves 8 are provided on the inclined surfaces 9 along the length direction. Positioning blocks 3 are provided at both ends and the middle of the inclined surfaces 9. The positioning blocks 3 have through holes parallel to the length direction of the support beam 1. Several mounting holes 7 are provided at the bottom of the support beam 1 along the length direction. The T-shaped rods 5 are inverted and inserted into the mounting holes 7. The precast reinforcing bars 2 include: a connecting block 21, with reinforcing bars 22 at the lower part of the connecting block 21 and through holes 23 on the connecting block 21. The connecting block 21 is located in the assembly grooves 8. The connecting block 21 and the through holes of the positioning blocks 3 are coaxial and have the same inner diameter. The fixing rods 4 pass through all the connecting blocks 21 and positioning blocks 3. The fixing rods 4 have external threads at both ends and are fixed to the positioning blocks 3 with nuts.
[0024] Preferably, a positioning ring 6 is provided on the upper part of each side of the T-shaped rod 5 after it is inverted.
[0025] Preferably, the axis of the through hole 23 of the connecting block 21 is located in the plane where the web rib 22 is located. In this example, the plane where the web rib 22 is located is at an angle of 60° with the plane because the connecting block 21 abuts against the assembly groove 8, and the shape and size of the connecting block 21 match the assembly groove. After the connecting block 21 abuts against the assembly groove 8, the through hole 23 is located outside the inclined surface 9, so as to facilitate the insertion of the fixing rod.
[0026] Preferably, the connecting block 21 is a concrete product, and the upper part of the reinforcing bar 22 is fixed to the connecting block 21 by anchoring.
[0027] Preferably, the support beam 1 and the assembly groove 8, mounting hole 7 and positioning block 3 provided thereon are integrally formed, specifically by casting or powder metallurgy forming, and the holes are opened after forming.
[0028] This invention replaces the traditional welded and fixed-to-support-beam reinforcing bars with prefabricated reinforcing bar components that can be placed in the assembly slot of the support beam and fixed by fixing rods. T-shaped rods, which can be inserted into mounting holes at the bottom of the support beam for erecting longitudinal reinforcement and anchoring, are also provided. After the concrete is poured to form the composite slab, the nuts at both ends of the fixing rods are unscrewed to remove them, and the support beam is lifted to complete its recycling for later use. This invention eliminates the need for additional tools during assembly, reduces the use of nuts, improves processing efficiency, and saves production costs.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A prestressed composite slab component, characterized in that: include: The support beam comprises a support beam, precast web reinforcement components, T-shaped rods, and fixing rods. The lower two sides of the support beam are inclined surfaces, with several assembly grooves along the length of the inclined surfaces. Positioning blocks are located at both ends and the middle of the inclined surfaces, each positioning block having a through hole parallel to the length of the support beam. The bottom of the support beam has several mounting holes distributed along the length of the beam, and the T-shaped rods are inverted and inserted into these mounting holes. The precast web reinforcement components include: connecting blocks, with web reinforcement at the bottom and through holes on the connecting blocks; the connecting blocks are located within the assembly grooves, and the through holes of the connecting blocks and positioning blocks are coaxial and have the same inner diameter. Fixing rods pass through all connecting blocks and positioning blocks, and both ends of the fixing rods are externally threaded, with nuts used to fix both ends of the fixing rods to the positioning blocks.
2. The prestressed composite slab member according to claim 1, characterized in that: A positioning ring is provided on the upper part of each side of the T-shaped rod after it is inverted.
3. The prestressed composite slab member according to claim 2, characterized in that: The axis of the through hole of the connecting block lies in the plane where the web rib is located.
4. The prestressed composite slab member according to claim 3, characterized in that: The connecting block is a concrete product, and the upper part of the reinforcing bar is fixed to the connecting block by anchoring.
5. The prestressed composite slab member according to claim 4, characterized in that: The support beam and the assembly groove, mounting holes and positioning blocks provided thereon are integrally formed.