CN112031238A - Combined floor slab and construction method thereof - Google Patents

Abstract

The invention relates to a composite floor slab and a construction method thereof, wherein the composite floor slab comprises a prefabricated wood bottom plate (14), a steel wire mesh (6) and a concrete laminated layer (5), the prefabricated wood bottom plate (14) comprises a plurality of layers of wood laminates and an oriented strand board (4) for structure, the wide surfaces of the wood laminates are jointed and connected to form a large-size wood board (1), the wood laminates are fixedly connected through wood nails, the oriented strand board (4) for structure covers the large-size wood board (1), the steel wire mesh (6), the oriented strand board (4) for structure and the large-size wood board (1) are fixedly connected in sequence through U-shaped nails (7) to form a whole, and the concrete laminated layer (5) is poured and formed on the whole. Compared with the prior art, the combined floor slab has high prefabrication degree, and has better vibration resistance and excellent fire resistance because the out-of-plane rigidity of the combined floor slab is larger and the surface of the combined floor slab is covered with the concrete laminated layer.

Description

Combined floor slab and construction method thereof

Technical Field

The invention relates to the field of wood structure buildings in structural engineering, in particular to a combined floor slab and a construction method thereof.

Background

At present, there are five types of floorslabs widely used in fabricated steel structure houses, and each has a certain defect, 1, traditional cast-in-place floorslab: the floor slab needs formwork erecting on site and has large engineering quantity of concrete wet operation; 2. precast concrete coincide floor: the floor slab has larger self weight and more concrete consumption; 3. steel bar truss floor support plate: the thickness of the floor slab structure layer is large, and the net height of a building is influenced; 4. profiled steel sheet concrete composite floor slab: the plate-shaped plates have high rib height, so that the plate thickness and the net height of a building are limited, the plate-shaped plates are not suitable for being applied to high-rise and super high-rise buildings, the seismic performance is poor, and the floor slab is easy to crack; 5. prestressed hollow floor slab: the floor slab has poor integral performance and large earthquake effect, and influences the consumption of reinforcing steel bars.

Along with the continuous progress of the technology, the development of building energy-saving work is more and more extensive for the influence research of solving the current energy and environmental problems. Wood is increasingly also used in floor slab elements of buildings as a renewable building material. However, no building member meeting the existing construction requirements and the requirements on vibration resistance and fire resistance exists at present.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a composite floor slab with high prefabrication degree, good vibration resistance and excellent fire resistance and a construction method thereof.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a composite floor, includes prefabricated wooden bottom plate, wire net and concrete superimposed layer, prefabricated wooden bottom plate includes multilayer wood veneer board and structural oriented strand board, each the laminating of the wide face of wood veneer board is connected and is formed a jumbo size plank, each through wooden nail fixed connection between the wood veneer board, structural oriented strand board cover in on the jumbo size plank, wire net, structural oriented strand board, jumbo size plank pass through U type nail fixed connection in proper order, form one whole, concrete superimposed layer pour form in on whole.

Further, the wood laminates are the same size.

Further, the wooden nails between the wooden laminates are arranged at equal intervals.

Further, the wooden nails are nailed into the wooden plywood along the direction perpendicular to the wide surface of the wooden plywood.

Further, the wooden nails between the adjacent layers are staggered.

Furthermore, the oriented strand board and the large-size wood board are fixedly connected through the wooden nails.

Further, the nail spacing of the wood nails along the short side of the large-size wood board is less than or equal to 300mm, and the nail spacing of the wood nails along the long side of the large-size wood board is less than or equal to 150 mm. The maximum nail spacing of the short side and the long side is set, so that the oriented strand board for the structure can be tightly attached to the large-size wood board in the longitudinal direction and the transverse direction to cooperatively bear force.

Further, the steel wire mesh comprises transverse thin steel bars which are arranged at equal intervals in the transverse direction and longitudinal thin steel bars which are arranged at equal intervals in the longitudinal direction.

Further, the U-shaped nail is arranged at the intersection of the transverse thin steel bar and the longitudinal thin steel bar.

Further, the U-shaped nail is made of galvanized steel.

The invention also provides a construction method of the composite floor slab, which comprises the following steps:

in a factory, the wide surfaces of the wood floor boards are connected in a fitting mode, a large-size wood board is formed by fixing wood nails, a structural oriented strand board covers the large-size wood board to form the prefabricated wood floor board, a steel wire mesh is fixed on the prefabricated wood floor board through U-shaped nails, and the concrete laminated layer 5 is poured to form the composite floor board based on the prefabricated wood floor board and the concrete laminated layer;

prefabricating a plurality of composite floor slabs through the steps;

and (5) transporting the prefabricated composite floor slab to a construction site to be spliced with the beam column component.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the renewable building material wood is introduced into the floor system, so that the floor system is more in line with the development direction of green buildings;

2. the composite floor slab can be completely prefabricated in factories, and has the characteristics of higher prefabrication degree, more convenience and rapidness in construction, excellent bending resistance and the like;

3. compared with the traditional pure wood floor, the combined floor based on the prefabricated wood bottom plate-concrete laminated layer has larger out-of-plane rigidity, the concrete laminated layer is covered on the surface of the combined floor, and the combined floor has the characteristics of good vibration resistance, excellent fire resistance and the like, the manufacturing process of the prefabricated wood bottom plate is extremely simple, and the requirement on the strength grade of the required wood is not high;

4. the wood-concrete composite floor slab can be obtained by integral prefabrication in a factory and then is transported to a construction site to be spliced with beam column members, the process avoids the trouble brought by site construction, simplifies the construction process and shortens the construction period;

5. according to the invention, the reinforcing mesh is arranged on the prefabricated wood bottom plate and fixed by the U-shaped nails, so that the bonding force between wood-concrete contact surfaces is improved, the cooperative working performance between the wood bottom plate and concrete under the action of bending moment is ensured, and the bending resistance of the composite floor slab is further improved.

Drawings

FIG. 1 is a schematic structural diagram of a composite floor slab according to the present invention;

FIG. 2 is a three-dimensional schematic view of the present invention except for the concrete overlay;

FIG. 3 is an enlarged three-dimensional schematic view taken at A in FIG. 2;

FIG. 4 is a three-dimensional schematic view of a large-sized wood board formed by laminating a plurality of wood laminates according to the present invention;

FIG. 5 is a top view of a large-sized wood board according to the present invention;

FIG. 6 is an enlarged schematic view at B of FIG. 5;

FIG. 7 is a side view of a prefabricated wood floor of the present invention;

FIG. 8 is a top view of FIG. 2;

FIG. 9 is a side view of FIG. 2;

in the figure, 1-large-size wood board, 11, 12 and 13-wood layer board, 112, 123, 1144-wood nail, 4-oriented strand board for structure, 14-prefabricated wood bottom board, 5-concrete laminated layer, 61-transverse thin steel bar, 62-longitudinal thin steel bar, 6-steel bar mesh, 7-U-shaped nail.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

In order to utilize renewable resources and promote green development of the building industry, on one hand, wood which is renewable building material is introduced into a floor system of a building to form a prefabricated wood floor, and on the other hand, in order to improve the vibration resistance and fire resistance of the wood floor, the embodiment provides a composite floor as shown in fig. 1-3, which comprises a prefabricated wood floor 14, a steel wire mesh 6 and a concrete laminated layer 5, the prefabricated wood bottom plate 14 comprises a plurality of layers of wood laminate plates and a structural oriented strand board 4, the wide surfaces of the wood laminate plates are jointed and connected to form a large-size wood plate 1, the wood laminate plates are fixedly connected through wood nails, oriented strand board 4 for the structure cover in on the jumbo size plank 1, wire net 6, oriented strand board 4 for the structure, jumbo size plank 1 are through U type nail 7 fixed connection in proper order, form one whole, concrete superimposed sheet 5 pour form in on whole.

In this embodiment, the wood laminates are of the same size, and as shown in fig. 4 to 6, the connection mode among the three wood laminates 11, 12, 14 is as follows: the first wood layer plate 11 and the second wood layer plate 12 are attached to each other in a wide face mode, and are vertically nailed in through wood nails 112 arranged at equal intervals, so that the first wood layer plate 11 and the second wood layer plate 12 are connected into a whole; the second wood layer plate 12 is attached to the wide surface of the third wood layer plate 13, the wood nails 123 arranged at equal intervals are vertically nailed, the second wood layer plate 12 and the third wood layer plate 13 are connected into a whole, and the wood nails 112 and 123 between the adjacent layers can be arranged in a staggered mode; thereby forming the large-sized wooden board 1. The specific size of the large-sized wooden board 1 may be set as desired, and the third and fourth wooden boards and the fourth and fifth wooden boards … … may be connected by wood nails to form a larger-sized wooden board 1.

As shown in fig. 7, in the prefabricated wood floor 14, the structural oriented strand board 4 and the large-sized wood board 1 are fixedly connected by the wooden nails 1144. The nail spacing of the wood nails along the short side of the large-size wood board 1 is less than or equal to 300mm, and the nail spacing of the wood nails along the long side of the large-size wood board 1 is less than or equal to 150mm, so that the oriented strand board for the structure is tightly attached to the large-size wood board in the longitudinal direction and the transverse direction to bear force cooperatively.

As shown in fig. 8 and 9, the steel wire mesh 6 includes transverse reinforcing bars 61 arranged at equal intervals in the transverse direction and longitudinal reinforcing bars 62 arranged at equal intervals in the longitudinal direction. The staples 7 are disposed at the intersections of the transverse rebars 61 and the longitudinal rebars 62. The U-shaped nail can be made of galvanized steel.

Example 2

This embodiment provides a construction method of a composite floor slab as described in embodiment 1 above, including:

in a factory, the wide surfaces of the wood floor boards are connected in a fitting mode, a large-size wood board 1 is formed by fixing wood nails, a structural oriented strand board 4 covers the large-size wood board 1 to form a prefabricated wood floor board 14, a steel wire mesh 6 is fixed on the prefabricated wood floor board 14 through U-shaped nails 7, and the concrete laminated layer 5 is poured to form the composite floor board based on the prefabricated wood floor board-concrete laminated layer;

prefabricating a plurality of composite floor slabs through the steps;

and (5) transporting the prefabricated composite floor slab to a construction site to be spliced with the beam column component.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The utility model provides a composite floor, its characterized in that, includes prefabricated wooden bottom plate (14), wire net (6) and concrete superimposed layer (5), prefabricated wooden bottom plate (14) include multilayer plywood and structural oriented strand board (4), each the laminating of the wide face of plywood is connected and is formed a jumbo size plank (1), each through dowel fixed connection between the plywood, structural oriented strand board (4) cover in on the jumbo size plank (1), wire net (6), structural U type nail (7) that pass through of oriented strand board (4), jumbo size plank (1) are fixed connection in proper order, form one whole, concrete superimposed layer (5) pour form in on the whole.

2. The composite floor slab of claim 1, wherein the wood panels are the same size.

3. The composite floor slab of claim 1, wherein the pegs between each of the wood slabs are equally spaced.

4. The composite floor slab of claim 1, wherein the wooden nails are nailed into the wooden deck plate in a direction perpendicular to a broad face of the wooden deck plate.

5. The composite floor slab of claim 1, wherein the spikes between adjacent layers are staggered.

6. The composite floor slab as claimed in claim 1, wherein the structural oriented strand board (4) is fixedly connected with the large-size wood boards (1) by means of wood nails.

7. The composite floor slab as claimed in claim 6, wherein the nail spacing of the wood nails along the short side of the large-size wood slab (1) is less than or equal to 300mm, and the nail spacing of the wood nails along the long side of the large-size wood slab (1) is less than or equal to 150 mm.

8. A composite floor slab according to claim 1, characterised in that the steel wire mesh (6) comprises transverse steel filaments (61) arranged at equal intervals in the transverse direction and longitudinal steel filaments (62) arranged at equal intervals in the longitudinal direction.

9. A composite floor slab according to claim 8, characterised in that the staples (7) are provided at the intersections of the transverse (61) and longitudinal (62) rebar.

10. A construction method of a composite floor slab as claimed in any one of claims 1 to 9, comprising:

in a factory, the wide surfaces of the wood floor boards are jointed and connected, and are fixed through wood nails to form a large-size wood board (1), the large-size wood board (1) is covered with an oriented strand board (4) for structure to form the prefabricated wood floor board (14), a steel wire mesh (6) is fixed on the prefabricated wood floor board (14) through U-shaped nails (7), and the concrete laminated layer (5) is poured to form the composite floor board based on the prefabricated wood floor board-concrete laminated layer;

prefabricating a plurality of composite floor slabs through the steps;

and (5) transporting the prefabricated composite floor slab to a construction site to be spliced with the beam column component.

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