Fabricated composite floor slab

Abstract

The utility model provides an assembly type composite floor slab which comprises two or more prefabricated floor slabs connected in sequence, a steel bar frame is pre-arranged in each prefabricated floor slab, a row of grouting connecting cavities penetrating through the prefabricated floor slabs are transversely formed in each prefabricated floor slab, and the grouting connecting cavities are located below the steel bar frames. Grouting pipes are inserted into the grouting connecting cavities communicating with the adjacent prefabricated floor slabs and used for grouting the grouting connecting cavities to connect the two adjacent prefabricated floor slabs. A row of grouting connecting cavities are formed in each prefabricated floor slab, the grouting pipes are inserted into the grouting connecting cavities of the adjacent prefabricated floor slabs, and grouting is conducted on the grouting connecting cavities, so that the adjacent prefabricated floor slabs form an overall connecting structure, the connecting strength between the composite floor slabs is improved, and the shear capacity of the joint is improved; and meanwhile, by arranging the grouting connecting cavity, the self weight can be effectively reduced while the structural strength is not affected, and then the hoisting difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the field of assembled floor slabs, in particular to an assembled composite floor slab. Background Art

[0002] Composite floor is a highly efficient prefabricated building material that combines prefabricated panels with cast-in-place reinforced concrete layers. With its excellent integrity and surface flatness, it has become the preferred solution for high-rise and large-space building designs, especially for applications that require high strength and large areas of column-free space. In its construction, the prefabricated panels are built with criss-crossed steel mesh and are equipped with embedded truss structures. These components are connected to each other by tying to enhance structural stability.

[0003] However, when faced with higher standards of structural safety requirements, the traditional method of relying on truss connections has exposed limitations, which are mainly reflected in two aspects: first, the connection strength between the composite floors is low, resulting in insufficient shear resistance at the joints; second, if the connection is not tight enough, it may cause safety hazards such as structural collapse. Therefore, an assembled composite floor is proposed to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide an assembled composite floor slab to solve the problem that the connection strength between composite floor slabs is low, resulting in insufficient shear resistance of the joint surface.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an assembled composite floor, including two or more prefabricated floor slabs connected in sequence, a steel frame is preset in the prefabricated floor slab, and a row of grouting connection cavities penetrating the prefabricated floor slab is horizontally arranged on the prefabricated floor slab, the grouting connection cavities are located below the steel frame, and a grouting pipe is inserted into the grouting connection cavities connecting adjacent prefabricated floor slabs, which is used for grouting into the grouting connection cavities to connect two adjacent prefabricated floor slabs.

[0006] In a preferred embodiment, a blocking portion is provided at the end of the grouting connection cavity of the first prefabricated floor slab to be installed, and the blocking portion is away from the connection side of the prefabricated floor slab.

[0007] In a preferred embodiment, when there are three or more prefabricated floor slabs, grouting pipes are inserted in a spaced manner between a row of grouting connection cavities of adjacent prefabricated floor slabs.

[0008] In the preferred embodiment, an upper fitting strip is provided on the upper portion of one side of the prefabricated floor slab, and a lower fitting strip matching the upper fitting strip is provided on the lower portion of the other side, and the grouting connection cavity passes through the lower fitting strip.

[0009] In a preferred embodiment, corresponding guide slopes are provided at the ends of the upper fitting strip and the lower fitting strip, and a sealing strip is provided at the bottom of the slope.

[0010] In a preferred embodiment, the reinforcement frame includes a plurality of distribution bars arranged transversely and prestressed bars distributed longitudinally, and both ends of the prestressed bars extend to the outside of the prefabricated floor slab.

[0011] In the preferred embodiment, a plurality of steel bar trusses are arranged transversely on the top of the prefabricated floor slab and arranged longitudinally thereon.

[0012] The utility model provides an assembled composite floor slab, which forms an integral connection structure with adjacent prefabricated floor slabs by arranging a row of grouting connection cavities on the prefabricated floor slabs, inserting grouting pipes into the grouting connection cavities of adjacent prefabricated floor slabs, and grouting the grouting connection cavities, thereby improving the connection strength between the composite floor slabs and the shear resistance of the joints. At the same time, by arranging the grouting connection cavities, the weight of the prefabricated floor slabs can be effectively reduced without affecting the structural strength, thereby reducing the difficulty of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 This is the structural diagram of the prefabricated floor slab of the utility model;

[0015] Figure 2 It is a structural diagram of two adjacent prefabricated floor slabs connected in the utility model;

[0016] Figure 3 It is a cross-sectional view of the connection structure of two adjacent prefabricated floor slabs of the utility model;

[0017] Figure 4 This is a structural diagram of the connection of three prefabricated floor slabs of the utility model;

[0018] In the figure: prefabricated floor slab 1; grouting connection cavity 2; grouting pipe 3; upper fitting strip 4; lower fitting strip 5; sealing strip 6; steel bar frame 7; steel bar truss 8; sealing part 9. DETAILED DESCRIPTION

[0019] like Figure 1-4As shown, an assembled composite floor comprises two or more prefabricated floor slabs 1 connected in sequence, the prefabricated floor slabs 1 are connected in sequence transversely, when the prefabricated floor slabs 1 are installed, a cast-in-place reinforced concrete layer is completed on top of the prefabricated floor slabs 1, a steel frame 7 is preset in the prefabricated floor slabs 1, the steel frame 7 comprises a plurality of distribution bars arranged transversely and prestressed bars distributed longitudinally, both ends of the prestressed bars extend to the outside of the prefabricated floor slabs 1, the exposed prestressed bars are used to form a linking effect, a plurality of steel trusses 8 arranged longitudinally are arranged transversely on the top of the prefabricated floor slabs 1, the steel trusses 8 are used to be connected to the upper cast-in-place reinforced concrete layer, a row of grouting connection cavities 2 penetrating the prefabricated floor slabs 1 are transversely arranged, in this embodiment, a row of grouting connection cavities 2 is nine in number, and the grouting connection cavity 2 is located below the steel frame 7, which does not affect the original structure of the prefabricated floor 1. By setting the grouting connection cavity 2, the original weight of the prefabricated floor 1 can be effectively reduced, thereby reducing the difficulty of its lifting. At the same time, the grouting connection cavity 2 is set below the steel frame 7 to avoid affecting the original structural strength of the prefabricated floor 1. The grouting connection cavity 2 connected to the adjacent prefabricated floor slabs 1 is inserted with a grouting pipe 3, which is used to grout the grouting connection cavity 2 to connect two adjacent prefabricated floor slabs 1. By inserting the grouting pipe 3 into the grouting connection cavity 2 of the adjacent prefabricated floor slabs 1 and grouting the grouting connection cavity 2 through the grouting pipe 3, the two prefabricated floor slabs 1 can be formed into a whole, thereby effectively enhancing their connection strength.

[0020] It should be noted that, in this embodiment, the grouting pipe 3 is a grouting steel pipe provided with grouting holes.

[0021] In the preferred embodiment, a sealing portion 9 is provided at the end of the grouting connection cavity 2 of the first prefabricated floor slab 1 installed. The sealing portion 9 is far away from the connection side of the prefabricated floor slab 1. The sealing portion 9 is a sealing mortar pre-arranged at the end of the grouting connection cavity 2. The sealing portion 9 is provided to prevent the mortar from flowing out from the front end when grouting the first two prefabricated floor slabs 1.

[0022] In the preferred embodiment, Figure 4 As shown, when there are three or more prefabricated floor slabs 1, grouting pipes 3 are inserted in between a row of grouting connection cavities 2 of adjacent prefabricated floor slabs 1, so that the three or more prefabricated floor slabs 1 can be formed into a whole by staggered arrangement of the grouting pipes 3, thereby avoiding that the previous grouting connection cavity 2 is filled with the grouting pipes 3, and the subsequent prefabricated floor slab 1 cannot be connected to the previous prefabricated floor slab 1.

[0023] In the preferred embodiment, an upper fitting strip 4 is provided on the upper part of one side of the prefabricated floor 1, and a lower fitting strip 5 matched with the upper fitting strip 4 is provided on the lower part of the other side, and the grouting connection cavity 2 passes through the lower fitting strip 5. By providing the upper fitting strip 4 and the lower fitting strip 5, an overlap can be formed between adjacent prefabricated floor slabs 1, thereby improving the tightness of the connection and achieving the effect of installation positioning.

[0024] In the preferred embodiment, corresponding guide slopes are provided at the ends of the upper fitting strip 4 and the lower fitting strip 5, and a sealing strip 6 is provided at the bottom of the slope. The guide slope can make the docking of adjacent prefabricated floor slabs 1 more convenient, and the positioning and installation efficiency can be effectively improved. At the same time, the sealing strip 6 can be provided to improve the sealing performance, and the sealing strip 6 is a rubber sealing strip.

[0025] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An assembled composite floor slab, comprising two or more prefabricated floor slabs (1) connected in sequence, wherein a steel reinforcement frame (7) is pre-set in the prefabricated floor slabs (1), and wherein: A row of grouting connection cavities (2) penetrating the prefabricated floor slabs (1) is transversely arranged, the grouting connection cavities (2) being located below the steel bar frame (7), and grouting pipes (3) are inserted into the grouting connection cavities (2) communicating with adjacent prefabricated floor slabs (1) for grouting the grouting connection cavities (2) to connect two adjacent prefabricated floor slabs (1).

2. The assembled composite floor slab according to claim 1 is characterized in that: A blocking portion (9) is provided at the end of the grouting connection cavity (2) of the first installed prefabricated floor slab (1), and the blocking portion (9) is away from the connection side of the prefabricated floor slab (1).

3. According to claim 2, the assembled composite floor slab is characterized by: When there are three or more prefabricated floor slabs (1), a grouting pipe (3) is inserted in a spaced manner between a row of grouting connection cavities (2) of adjacent prefabricated floor slabs (1).

4. The assembled composite floor slab according to any one of claims 1 to 3, characterized in that: An upper fitting strip (4) is provided at the upper portion of one side of the prefabricated floor slab (1), and a lower fitting strip (5) matching the upper fitting strip (4) is provided at the lower portion of the other side, and the grouting connection cavity (2) passes through the lower fitting strip (5).

5. The assembled composite floor slab according to claim 4 is characterized in that: The ends of the upper fitting strip (4) and the lower fitting strip (5) are provided with corresponding guide slopes, and a sealing strip (6) is provided at the bottom of the slope.

6. The assembled composite floor slab according to claim 1 is characterized in that: The steel reinforcement frame (7) comprises a plurality of distribution bars arranged transversely and prestressed bars distributed longitudinally, and both ends of the prestressed bars extend to the outside of the prefabricated floor slab (1).

7. The assembled composite floor slab according to claim 1 is characterized in that: A plurality of steel bar trusses (8) arranged longitudinally are arranged transversely on the top of the prefabricated floor slab (1).

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