Fabricated prefabricated floor plate

Abstract

An assembly type prefabricated floor plate comprises a reinforcing steel bar supporting frame and a base plate, and the reinforcing steel bar supporting frame comprises an upper reinforcing steel bar mesh and a lower reinforcing steel bar mesh; the steel bar supporting frame is poured in the base plate, and longitudinal rabbets are formed in the base plate and are arranged in a stepped mode. The upper reinforcing mesh and the lower reinforcing mesh are connected together through reinforcing steel bars; and the longitudinal reinforcing steel bars of the upper reinforcing mesh are exposed at the longitudinal tongue-and-groove positions. According to the utility model, the reinforcing steel bars exposed at the rabbets can be better combined with cast-in-place concrete at the rabbets, so that the integrality between plates or between plates and beams can be increased, and the effect of equivalent cast-in-place is achieved; the upper reinforcing mesh and the lower reinforcing mesh are continuously and integrally formed at the plate end, and hogging moment at the plate end can be effectively transmitted; the basic thickness is consistent with the designed thickness of the floor slab, so that secondary overlapping construction is not needed, and the use of templates and supports is reduced. In this way, manpower and material resources are saved, on-site machining is more convenient and faster, and the stability and safety of the fabricated building are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, in particular to a prefabricated floor slab for prefabricated buildings. Background Art

[0002] In recent years, with the growth of people's demand for housing and the increasing requirements for building quality and sustainability, the construction technology of prefabricated buildings has gradually attracted attention. With the continuous improvement of industrialization, the traditional structure cannot meet people's requirements for quality and efficiency. Prefabricated buildings can just provide solutions through the factory-based and standardized production mode. This production method can greatly reduce costs, shorten the construction period, ensure the stability of building quality, and also reduce energy consumption and waste emissions with the help of advanced materials and construction technologies, achieving a more environmentally friendly building method. Prefabricated concrete buildings are the most widely used type of prefabricated buildings at present, and their main prefabricated components are reinforced concrete composite floor slabs. Due to the need for secondary casting of this type of component, it brings a large cost increase compared with traditional cast-in-place floors, restricting the development of prefabricated concrete buildings. Therefore, there is an urgent need for a prefabricated floor slab for prefabricated buildings to solve the above problems. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a prefabricated floor slab for prefabricated buildings that is convenient to install and has higher safety.

[0004] To solve the above technical problem, the technical solution proposed by the utility model is: a prefabricated floor slab for prefabricated buildings, including a steel bar support frame and a base plate. The steel bar support frame includes an upper steel bar mesh and a lower steel bar mesh; the steel bar support frame is cast in the base plate, and longitudinal rabbets are formed on the base plate, and the rabbets are arranged in a stepped manner; the upper steel bar mesh and the lower steel bar mesh are connected together by steel bars; the longitudinal steel bars of the upper steel bar mesh are exposed at the longitudinal rabbet positions.

[0005] For the above prefabricated floor slab for prefabricated buildings, preferably, the length of the longitudinal steel bars of the upper steel bar mesh cast in the base plate is greater than the length exposed at the rabbet positions.

[0006] For the above prefabricated floor slab for prefabricated buildings, preferably, the longitudinal steel bars of the upper steel bar mesh are formed by bending the longitudinal steel bars of the lower steel bar mesh by 180 degrees.

[0007] For the above prefabricated floor slab for prefabricated buildings, preferably, connection through holes are formed on the longitudinal rabbets.

[0008] For the above prefabricated floor slab for prefabricated buildings, preferably, transverse rabbets are formed on the base plate, and the transverse steel bars of the upper steel bar mesh are exposed at the transverse rabbet positions.

[0009] For the above-mentioned prefabricated floor slab, preferably, the length of the transverse steel bars of the upper steel mesh cast in the base plate is greater than the length exposed at the keyway position.

[0010] For the above-mentioned prefabricated floor slab, preferably, the transverse steel bars of the upper steel mesh are formed by bending the transverse steel bars of the lower steel mesh by 180 degrees.

[0011] For the above-mentioned prefabricated floor slab, preferably, connecting through holes are formed in the transverse keyway.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: in the present utility model, the steel bars exposed at the keyway can better combine with the cast-in-place concrete at the keyway, which can increase the integrity between the slabs or between the slab and the beam, achieving the effect equivalent to that of cast-in-place; the upper steel mesh and the lower steel mesh are continuously integrally formed at the slab end, which can effectively transfer the negative bending moment at the slab end; the basic thickness is consistent with the designed thickness of the floor slab, eliminating the need for secondary superimposed construction, reducing the use of formwork and supports, thus saving both labor and materials, being more convenient and fast during on-site processing, and improving the stability and safety of prefabricated buildings. Description of the Drawings

[0013] Figure 1 It is a structural schematic diagram of the prefabricated floor slab in Embodiment 1.

[0014] Figure 2 It is a structural schematic diagram of the steel bar support frame in Embodiment 1.

[0015] Figure 3 It is a structural schematic diagram of the prefabricated floor slab in Embodiment 2.

[0016] Figure 4 It is a structural schematic diagram of the steel bar support frame in Embodiment 2.

[0017] Figure 5 It is a structural schematic diagram of the prefabricated floor slab in Embodiment 3.

[0018] Figure 6 It is a structural schematic diagram of the steel bar support frame in Embodiment 3.

[0019] Legend Explanation

[0020] 1. Base plate; 2. Steel bar support frame; 21. Upper steel mesh; 22. Lower steel mesh; 3. Connecting through hole; 4. Longitudinal keyway; 5. Transverse keyway. Detailed Embodiments

[0021] For the convenience of understanding the present utility model, the following will describe the present utility model more comprehensively and meticulously in combination with the accompanying drawings of the specification and preferred embodiments, but the protection scope of the present utility model is not limited to the following specific embodiments.

[0022] It should be particularly noted that when a certain component is described as "fixed to, fixedly connected to, connected to, or communicated with" another component, it can be directly fixed, fixedly connected, connected, or communicated with the other component, or can be indirectly fixed, fixedly connected, connected, or communicated with the other component through other intermediate connecting members.

[0023] Unless otherwise defined, all professional terms used hereinafter have the same meanings as those commonly understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present utility model. Embodiment 1

[0024] As Figure 1 shown, an assembled precast floor slab includes a steel bar support frame 2 and a base plate 1; as Figure 2 shown, the steel bar support frame 2 includes an upper steel bar mesh 21 and a lower steel bar mesh 22; the steel bar support frame 2 is cast in the base plate 1, and a longitudinal keyway 4 is formed on the base plate 1, and the keyway is arranged in a stepped manner; the upper steel bar mesh 21 and the lower steel bar mesh 22 are connected together by steel bars. In this embodiment, both the upper steel bar mesh 21 and the lower steel bar mesh 22 include transverse steel bars and longitudinal steel bars; the transverse steel bars and longitudinal steel bars of the upper steel bar mesh 21 are welded together or connected together by iron wires; the transverse steel bars and longitudinal steel bars of the lower steel bar mesh 22 are welded together or connected together by iron wires. The longitudinal steel bars of the upper steel bar mesh 21 are exposed at the position of the longitudinal keyway 4. In this embodiment, the keyway in the longitudinal direction of the base plate 1 is the longitudinal keyway 4. In this embodiment, there is one longitudinal keyway 4 provided on the base plate 1, and connection through holes 3 for connecting to a beam or other floor slabs are provided on the longitudinal keyway 4.

[0025] In this embodiment, the length of the longitudinal steel bars of the upper steel bar mesh 21 cast in the base plate 1 is greater than the length of the part exposed at the keyway position. In this embodiment, the longitudinal steel bars of the upper steel bar mesh 21 and the lower steel bar mesh 22 are the same steel bar, and the longitudinal steel bars of the upper steel bar mesh 21 are formed by bending the longitudinal steel bars of the lower steel bar mesh 22 by 180 degrees; in this way, the upper steel bar mesh 21 and the lower steel bar mesh 22 are connected together, and the structural stability is better.

[0026] In this embodiment, the steel bars exposed at the keyway can better combine with the cast-in-place concrete at the keyway, can increase the integrity between the slabs or between the slab and the beam, achieve the effect equivalent to cast-in-place, is more convenient during on-site installation, and also reduces the use of formwork and supports. This not only saves manpower and material resources, but also is more convenient and fast during on-site processing, and improves the stability and safety of the assembled building. Embodiment 2

[0027] As Figure 3 and Figure 4As shown, in this embodiment, the rabbet in the longitudinal direction of the substrate 1 is the longitudinal rabbet 4. In this embodiment, two longitudinal rabbets 4 are provided on the substrate 1. In this embodiment, the longitudinal steel bars of the upper steel mesh 21 and the lower steel mesh 22 are the same steel bar; the two ends of the longitudinal steel bar of the lower steel mesh 22 are bent 180 degrees to form the longitudinal steel bars of the two upper steel meshes 21; the two longitudinal steel bars of the upper steel mesh 21 are respectively exposed from the two rabbets.

[0028] Other parts of this embodiment are the same as those of Embodiment 1. Embodiment 3

[0029] As Figure 5 and Figure 6 In this embodiment, not only are there two longitudinal rabbets 4 on the substrate 1, but also two transverse rabbets 5 are formed. The transverse steel bars of the upper steel mesh 21 are exposed at the positions of the transverse rabbets 5. The length of the transverse steel bars of the upper steel mesh 21 cast in the substrate 1 is greater than the length of the exposed rabbet positions.

[0030] In this embodiment, the transverse steel bars of the upper steel mesh 21 and the lower steel mesh 22 are the same steel bar; the two ends of the transverse steel bar of the lower steel mesh 22 are bent 180 degrees to form the transverse steel bars of the two upper steel meshes 21.

[0031] Other parts of this embodiment are the same as those of Embodiment 2.

Claims

1. An assembled prefabricated floor panel, characterized in that: It includes a steel support frame and a base plate, wherein the steel support frame includes an upper steel mesh and a lower steel mesh; the steel support frame is cast in the base plate, a longitudinal tongue and groove is formed on the base plate, and the tongue and groove are arranged in a stepped manner; the upper steel mesh and the lower steel mesh are connected together by steel bars; the longitudinal steel bars of the upper steel mesh are exposed at the longitudinal tongue and groove position.

2. The prefabricated floor panel according to claim 1, characterized in that: The length of the longitudinal steel bars of the upper steel mesh cast in the base plate is greater than the length exposed at the tongue-and-groove position.

3. The assembled prefabricated floor panel according to claim 1 or 2, characterized in that: The longitudinal steel bars of the upper steel mesh are formed by bending the longitudinal steel bars of the lower steel mesh by 180 degrees.

4. The assembled prefabricated floor panel according to claim 3, characterized in that: A connecting through hole is formed on the longitudinal groove.

5. The assembled prefabricated floor panel according to claim 1, characterized in that: A transverse tongue and groove is formed on the base plate, and the transverse steel bars of the upper steel mesh are exposed at the transverse tongue and groove position.

6. The assembled prefabricated floor panel according to claim 5, characterized in that: The length of the transverse steel bars of the upper steel mesh cast in the base plate is greater than the length of the exposed tongue-and-groove position.

7. The assembled prefabricated floor panel according to claim 5 or 6, characterized in that: The transverse steel bars of the upper steel mesh are formed by bending the transverse steel bars of the lower steel mesh by 180 degrees.

8. The assembled prefabricated floor panel according to claim 7, characterized in that: A connecting through hole is formed on the transverse groove.

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