CN216690000U

CN216690000U - Assembled building floor

Info

Publication number: CN216690000U
Application number: CN202123325814.7U
Authority: CN
Inventors: 陈铃
Original assignee: Foshan Tieyuan Building Material Technology Co ltd
Current assignee: Foshan Tieyuan Building Material Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-07
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses an assembly type building floor slab, which consists of a plurality of prefabricated floor slabs, prefabricated steel reinforcement cages and cast-in-place concrete for connecting the prefabricated floor slabs and the prefabricated steel reinforcement cages together. The two vertical sides of the upward bulges of the precast floor slabs incline inwards by 2-5 degrees from top to bottom, and a concrete pouring cavity with a narrow top and a wide bottom is formed in the middle when two adjacent precast floor slabs are spliced seamlessly. The utility model has the advantages of stable quality, simple field installation, high speed and high efficiency, low cost and the like.

Description

Assembled building floor

Technical Field

The utility model relates to the technical field of buildings, in particular to an assembly type building floor slab.

Background

The traditional building construction mode progress is very slow, and the workman is abominable at the on-the-spot operational environment, and the amount of labour is big, still can produce a large amount of building rubbish in the work progress, causes very big pollution to the environment. In recent years, the national policy of benefiting the assembly type buildings is continuously released, and the temperature of the assembly type buildings in China is increased day by day. At present, the assembled way in the aspect of concrete building floor is: and (3) producing the composite floor slabs in a factory, transporting the composite floor slabs to a construction site for assembly, binding surface layer reinforcing steel bars of the composite floor slabs by workers according to design requirements, and pouring surface layer concrete. Although the method meets the construction requirements of the fabricated building, the following defects still exist: 1, the labor capacity of workers is large, the working environment is severe, and particularly, the workers can bind floor surface layer reinforcing steel bars on a construction site; 2, the whole process is complex, the factory production has limited effect in the whole process, and the manufacturing cost is high; 3, the sound insulation and heat preservation performance of the built floor slab is poor.

Disclosure of Invention

The utility model aims to solve the technical defects, and provides the fabricated building floor which is simple in structure, can be produced in a factory, can be used for binding and forming all reinforcing steel bars in the factory, is stable in quality, simple to install on site, fast and efficient, low in manufacturing cost, high in floor bearing capacity, and good in sound insulation and heat insulation performance.

The utility model adopts the following technical solution to achieve the above object.

The fabricated building floor slab is characterized by comprising a plurality of prefabricated floor slabs, prefabricated steel reinforcement cages and cast-in-place concrete, wherein the prefabricated floor slabs and the prefabricated steel reinforcement cages are sequentially spliced, and the prefabricated floor slabs and the prefabricated steel reinforcement cages are connected together to work.

The prefabricated floor slab is in a long strip shape, the length of a long edge is not less than twice of the width, the cross section of the prefabricated floor slab is L-shaped, one end of the prefabricated floor slab protrudes upwards, the other end of the prefabricated floor slab extends outwards to form a bottom edge, the upward protruding thickness is greater than the outward extending thickness of the bottom edge, and the protruding width is greater than the outward extending width of the bottom edge.

The two vertical sides of the upward bulges of the precast floor slabs incline inwards by 2-5 degrees from top to bottom, and a concrete pouring cavity with a narrow top and a wide bottom is formed in the middle when two adjacent precast floor slabs are seamlessly spliced.

The prefabricated floor slab is composed of a high-strength concrete layer, a light concrete layer and steel bars, wherein the upper part of the concrete is high-strength concrete, the strength of the concrete is not less than C20 (20 mpa), and the thickness of the concrete is 50-100 mm; the reinforcing steel bars are inserted into the concrete slab, two ends of the reinforcing steel bars extend out of the concrete slab to form anchoring reinforcing steel bars, and the end parts of the anchoring reinforcing steel bars are in a hook shape; the light concrete layer of the lower part is a foam concrete layer.

The light concrete layer part is designed into a solid plate structure or a hollow plate structure.

Compared with the existing 'composite floor' fabricated floor, the utility model adopting the technical scheme can achieve the beneficial effects.

1. The workload of field workers is saved: the on-site installation is simple, rapid and efficient, on-site reinforcement is not needed, and the workload of on-site workers is reduced.

2. And (3) material saving: the utility model skillfully utilizes the mechanical characteristics of material saving and high bearing capacity of the multi-ribbed beam floor slab, thereby saving materials, reducing the manufacturing cost and simultaneously improving the bearing capacity of the floor slab.

3. Excellent sound insulation and thermal insulation performance: the lightweight concrete used in the lower part of the floor serves as a cast-in-place concrete form when the floor is assembled and as a sound insulating material and a heat insulating material during the life cycle of the building.

4. The engineering quality is guaranteed, and a set of standardized system is formed easily by the materials of industrial production and the assembly type construction mode, so that the product quality is guaranteed.

Drawings

Fig. 1 is a schematic view of a prefabricated floor structure.

Fig. 2 is a schematic sectional structure of a precast floor slab.

Fig. 3 is a schematic view of a concrete pouring cavity.

Fig. 4 is a schematic diagram of a reinforcement cage of an embodiment.

Fig. 5 is a schematic installation diagram of an embodiment.

FIG. 6 is a schematic cross-sectional view of an example mounting structure.

Description of reference numerals: 1. high-strength concrete 2, floor slab reinforcing bars 3, light concrete 4, a concrete pouring cavity 5, a bearing beam 6 and a reinforcement cage.

Detailed Description

The technical solution is described in detail with reference to specific embodiments below.

As shown in fig. 1-2, (1) precast floor slab shape: is in the shape of a long strip, and the length of the strip is 3000 mm. The cross section of the L-shaped bracket is in an L shape, the width of the upward bulge at the left end is 500mm, the thickness of the upward bulge is 200mm, the right end extends outwards for 170mm and has the thickness of 50mm, and the vertical edges at the two sides of the upward bulge at the left end are inclined inwards for 10mm from top to bottom; thus, after the seamless splicing and installation of two adjacent precast floor slabs are finished (as shown in figure 3), a trapezoidal concrete pouring cavity with the upper part width of 150mm, the lower part width of 170mm and the height of 200mm is formed in the middle. (2) The prefabricated floor comprises the following materials: the upper part is C30 common concrete with the thickness of 60 mm; and secondly, preparing round steel with the diameter of 6mm @150mm in C30 common concrete. The two ends of the steel bar are made into a hook shape, so that the two ends of the steel bar extend 75mm (not including the length of the hook) outwards from the C30 common concrete slab, and the rest part is C1.0 foam concrete. (3) The production method of the prefabricated floor slab comprises the following steps: firstly, manufacturing equipment such as a mould and the like is customized according to the shape of the precast floor slab, and then the precast floor slab is manufactured in the following mode: the mould is installed upside down, i.e. part of the C30 normal concrete is placed at the bottom; (II) pouring a part of the high-strength high-density concrete: firstly, steel bars are laid in a mould according to the shape of a prefabricated floor slab, then C30 concrete with the thickness of 70mm is poured, and the concrete is vibrated to be compact and flat; and (III) pouring the rest part with C1.0 foam concrete to reach the thickness, vibrating to make the rest part compact and flat, curing according to the conventional curing method of the precast floor slab, and demolding to finish the production of the precast floor slab.

As shown in fig. 4, the reinforcement cage is prefabricated: 4 12 screw-thread steel of diameter, both ends are outside to stretch into the steel reinforcement cage of spandrel girder, and stirrup diameter 6mm round steel @150mm ligature shaping, steel reinforcement cage length 3000 mm.

The concrete is cast in situ, C30 common concrete is cast in a trapezoidal concrete casting cavity with the upper part of 150mm wide, the lower part of 170mm wide and the height of 200mm, and the concrete of the bearing beams at the two ends of the precast floor slab are cast and maintained together.

As shown in figures 5-6, the assembly method of the building floor slab comprises the following steps: firstly, installing a first precast floor slab according to design requirements; secondly, installing a reinforcement cage on the extending bottom edge of the first precast floor slab, and enabling the 'outwards extending reinforcement' of the precast floor slab to extend into the reinforcement cage; thirdly, mounting a second precast slab, and enabling the 'outwards extending steel bars' of the precast slab to extend into the mounted steel bar cage; and the prefabricated parts are assembled by repeating the installation in sequence. And after the installation is checked to be correct, C30 concrete is poured into the concrete pouring cavity, and the elevation of the poured concrete is equal to the prefabricated floor surface. When the concrete is poured, the concrete and the concrete of the bearing beams at the two ends of the prefabricated floor slab are poured and maintained together.

By adopting the specific assembling method, the floor bearing load of the produced floor slab reaches 1000kg/m2, which is much higher than that of the common floor slab.

Compared with the prior art, in the whole floor construction process, neither template assembly nor reinforcement binding is required; the workload of field workers is reduced; the manufacturing cost of the floor surface is reduced, the building materials are saved, and the bearing capacity of the floor is improved; the floor slab has strong sound insulation capability and heat preservation performance.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides an assembled building floor, it comprises the prefabricated floor, prefabricated steel reinforcement cage that the polylith spliced in proper order and the cast in situ concrete who links the two work together, its characterized in that, prefabricated floor is rectangular form, and the length on long limit is not less than the twice of width, and its cross-section is the L type, and one end is upwards protruding, and the other end outwards extends for the base, and upwards protruding thickness is greater than the base and outwards extends thickness, and protruding width is greater than the base and outwards extends the width.

2. The fabricated building floor of claim 1, wherein the two vertical sides of the upward protrusions of the precast floor slab are inclined inward from top to bottom by 2-5 degrees, and a concrete pouring cavity with a narrow top and a wide bottom is formed in the middle when two adjacent precast floor slabs are seamlessly spliced.

3. The fabricated building floor of claim 1, wherein the prefabricated floor is composed of a high strength concrete layer, a light weight concrete layer and steel bars, the upper portion of the concrete is the high strength concrete layer, the strength of the concrete layer is not less than C20, and the thickness of the concrete layer is 50-100 mm; the light concrete layer of the lower part is a foam concrete layer.

4. The fabricated building floor of claim 3, wherein the reinforcing bars are inserted into the high strength concrete layer, and both ends of the reinforcing bars extend out of the high strength concrete layer to form anchoring reinforcing bars, and the ends of the anchoring reinforcing bars are hook-shaped.

5. The fabricated building floor of claim 3, wherein the lightweight concrete layer portion is designed as a solid slab structure or a hollow slab structure.