Detachable truss prestressed concrete composite slab

Abstract

The utility model discloses a detachable truss prestressed concrete composite board, it includes: with the steel frame structure that the composite board component, horizontal muscle, longitudinal muscle constitute, and the concrete layer that the cubic space of the lower part of composite board component and horizontal muscle, longitudinal muscle are and the pouring of being in the space, the composite board component includes support beam, and the both sides of support beam lower part are equipped with a plurality of installation slot and have the positioning block of through -hole, and each slot is equipped with one web prefabricated part in, and the through -hole of web prefabricated part is equipped with on the outside of support beam, and fixed rod passes through all positioning block and the through -hole of web prefabricated part, and web prefabricated part is limited in installation slot, horizontal muscle, longitudinal muscle builds as net -like and sets up in the lower part of web prefabricated part, and the both ends of horizontal muscle, longitudinal muscle all branch out concrete layer and form anchoring portion, the utility model discloses when processing need not extra use fastening tool, reduce the use of nut simultaneously, improve processing efficiency, save production cost.

Description

Technical Field

[0001] This utility model relates to the field of building materials, and in particular to a detachable truss prestressed concrete composite slab. Background Technology

[0002] Traditional detachable truss prestressed concrete 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 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 prefabricated prestressed composite slab components and composite slabs while controlling costs, this utility model proposes a detachable truss prestressed concrete composite slab. Its structure includes: a steel frame structure composed of composite slab components, transverse reinforcement, and longitudinal reinforcement; and a concrete layer cast into the lower part of the composite slab components and the cubic space containing the transverse and longitudinal reinforcements. The composite slab components include support beams, with several installation slots and positioning blocks with through holes on both sides of the lower part of the support beams. Each slot contains a precast web reinforcement component, which has a through hole on the outside of the support beam. A fixing rod passes through all the positioning blocks and the through holes of the precast web reinforcement component, confining the precast web reinforcement component within the installation slot. The transverse and longitudinal reinforcements are arranged in a mesh and positioned below the precast web reinforcement component, with both ends of the transverse and longitudinal reinforcements extending outwards into a concrete layer to form anchorages.

[0005] Preferably, the composite slab component includes: a support beam, precast web reinforcement, a T-shaped rod, and a fixing rod; 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 rod is inverted and inserted into the mounting holes; the precast web reinforcement includes: a connecting block, with web reinforcement at the lower part of the connecting block, and a through hole on the connecting block; the connecting block is located in the assembly groove, and the through holes of the connecting block and the positioning blocks are coaxial and have the same inner diameter; the fixing rod passes through all the connecting blocks and positioning blocks, and both ends of the fixing rod are provided with external threads, and nuts are used to fix both ends of the fixing rod to the positioning blocks.

[0006] Preferably, the upper part of each side of the T-shaped rod after it is inverted is provided with a positioning ring, the longitudinal rib passes through the positioning ring, and part of the transverse rib rests at the junction of the adjacent web rib.

[0007] Preferably, the axis of the through hole of the connecting block is located in the plane of the web rib.

[0008] Preferably, the connecting block is a metal product, and the upper part of the web rib is fixed to the connecting block by welding.

[0009] Preferably, the support beam and the assembly groove, mounting hole and positioning block provided thereon are integrally formed.

[0010] 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 fastening tools during processing, reduces the use of nuts, improves processing efficiency, and saves production costs. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of the structure of the present utility model.

[0013] Figure 2 This is a schematic diagram of the steel frame structure.

[0014] Figure 3 This is a three-dimensional view of the composite slab component.

[0015] Figure 4 This is a front view of the composite slab component.

[0016] Figure 5 This is a side view of the composite slab component.

[0017] Figure 6 This is a three-dimensional view of the supporting beam.

[0018] Figure 7 This is a three-dimensional view of the precast rib reinforcement component.

[0019] In the diagram: 1. Support beam; 2. Precast web reinforcement; 3. Positioning block; 4. Fixing rod; 5. T-shaped rod; 6. Positioning ring; 7. Mounting hole; 8. Assembly groove; 9. Inclined surface; 11. Horizontal reinforcement; 12. Longitudinal reinforcement; 13. Concrete layer; 14. Anchorage part; 21. Connecting block; 22. Web reinforcement; 23. Through hole. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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

[0026] like Figures 1-7 As shown, the structure of the detachable truss prestressed concrete composite slab of this utility model includes: a steel frame structure composed of composite slab components, transverse reinforcement 11, and longitudinal reinforcement 12, and a concrete layer 13 formed by casting the lower part of the composite slab components and the cubic space where the transverse reinforcement 11 and longitudinal reinforcement 12 are located; the composite slab components include a support beam 1, and several installation slots and positioning blocks with through holes are provided on both sides of the lower part of the support beam. Each slot is equipped with a precast reinforcement 2. The precast reinforcement 2 has a through hole on the outside of the support beam. The fixing rod 4 passes through all the positioning blocks 3 and the through holes of the precast reinforcement 2, and restricts the precast reinforcement 2 within the installation slot; the transverse reinforcement 11 and longitudinal reinforcement 12 are built into a mesh and set at the lower part of the precast reinforcement 2. The overlapping method is to tie with steel wire. The two ends of the transverse reinforcement 11 and longitudinal reinforcement 12 extend out of the concrete layer 13 to form an anchoring part 14. Example 2

[0027] The composite slab component of this utility model includes: a support beam 1, a precast web reinforcement 2, a T-shaped rod 5, and a fixing rod 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 rod 5 is inverted and inserted into the mounting holes 7. The precast web reinforcement 2 includes: a connecting block 21, with a web reinforcement 22 at the lower part of the connecting block 21 and a through hole 23 on the connecting block 21. The connecting block 21 is located in the assembly groove 8. The connecting block 21 and the through hole of the positioning block 3 are coaxial and have the same inner diameter. The fixing rod 4 passes through all the connecting blocks 21 and the positioning blocks 3. The fixing rod 4 has external threads at both ends and is fixed to the positioning blocks 3 with nuts.

[0028] Preferably, a positioning ring 6 is provided on the upper part of each side of the T-shaped rod 5 after it is inverted. Preferably, a positioning ring 6 is provided on the upper part of each side of the T-shaped rod 5 after it is inverted, the longitudinal rib 12 passes through the positioning ring 6, and part of the transverse rib 11 rests at the junction of adjacent web ribs 22.

[0029] 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 35° 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.

[0030] Preferably, the connecting block 21 is a metal product, and the upper part of the web rib 22 is fixed to the connecting block 21 by welding.

[0031] 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.

[0032] 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 fastening tools during processing, reduces the use of nuts, improves processing efficiency, and saves production costs.

[0033] 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 detachable truss prestressed concrete composite slab, characterized in that: include: The steel frame structure consists of composite slab components, transverse reinforcement, and longitudinal reinforcement, and a concrete layer cast into the lower part of the composite slab components and the cubic space where the transverse and longitudinal reinforcement are located. The composite slab components include support beams, with several installation slots and positioning blocks with through holes on both sides of the lower part of the support beams. Each slot contains a precast web reinforcement component, which has a through hole on the outside of the support beam. A fixing rod passes through all the positioning blocks and the through holes of the precast web reinforcement component, confining the precast web reinforcement component within the installation slot. The transverse and longitudinal reinforcement are arranged in a mesh and placed at the lower part of the precast web reinforcement component. Both ends of the transverse and longitudinal reinforcement extend out of the concrete layer to form anchorage parts.

2. The detachable truss prestressed concrete composite slab according to claim 1, characterized in that: The composite slab component includes: a support beam, precast web reinforcement, 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 includes: a connecting block, with web reinforcement at the lower part of the connecting block, and a through hole on the connecting block; the connecting block is located in the assembly groove, and the through holes of the connecting block and the 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.

3. The detachable truss prestressed concrete composite slab according to claim 2, characterized in that: The upper part of each side of the T-shaped rod after it is inverted is provided with a positioning ring, the longitudinal rib passes through the positioning ring, and part of the transverse rib rests at the junction of the adjacent web rib.

4. The detachable truss prestressed concrete composite slab according to claim 3, characterized in that: The axis of the through hole of the connecting block lies in the plane where the web rib is located.

5. The detachable truss prestressed concrete composite slab according to claim 4, characterized in that: The connecting block is a metal product, and the upper part of the web rib is fixed to the connecting block by welding.

6. The detachable truss prestressed concrete composite slab according to claim 5, characterized in that: The support beam and the assembly groove, mounting holes and positioning blocks provided thereon are integrally formed.

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