CN207296166U - A kind of light steel skeleton prefabricated thermal insulation floor - Google Patents

Abstract

The utility model discloses a prefabricated thermal insulation floor slab with a light steel skeleton, which relates to the technical field of building floors, and comprises a concrete layer and a thermal insulation layer. The concrete layer 1 and the thermal insulation layer are connected through a steel skeleton. Stress steel bars, horizontal steel connectors and U-shaped connectors, cold-formed thin-walled light steel, stressed steel bars and horizontal steel connectors are all arranged in the first concrete layer, and cold-formed thin-walled light-gauge steel is arranged horizontally in the first concrete layer , the upper end of the cold-formed thin-walled light steel is connected to the horizontally arranged stress reinforcement, and the lower end is connected to the horizontal steel connector. The U-shaped connector is set through the insulation layer, and its open end is connected to the horizontal steel connector. The U-shaped connector The middle horizontal part and the horizontal steel mesh connected with it are all arranged in the insulation layer. The utility model has the advantages of light weight, material saving, high strength, low cost and excellent thermal insulation performance, short production period, convenient prefabrication, convenient transportation, impact resistance and effective shock resistance.

Description

A prefabricated thermal insulation floor slab with light steel skeleton

technical field

The utility model relates to the technical field of building floors, in particular to a prefabricated thermal insulation floor with a light steel skeleton.

Background technique

Traditional floor slabs are reinforced concrete floor slabs made of reinforced concrete composite materials. Although the floor slab has a thermal insulation layer, the reinforced concrete floor slab is heavy, the production cost is high, the production cycle is long, the transportation is inconvenient, and it is not soundproof. The seismic isolation effect is poor, especially the wavy seismic waves that cannot resist the lateral shaking caused by earthquakes.

In addition, the existing prefabricated floor slabs of prefabricated buildings generally use laminated floor slabs, that is, half of the thickness is made in the factory and then the other half of the laminated floor is poured after installation on the construction site. Although this process saves the formwork used in the cast-in-place process, it does not The amount of support and on-site concrete pouring is not saved, which is labor-intensive and time-consuming. At the same time, the single-layer steel bar has poor stress, seismic and flexural performance, and it is easy to cause different degrees of damage during transportation, resulting in different quality damage.

Utility model content

The utility model provides a prefabricated heat-preservation floor slab with a light steel skeleton, which aims to solve the technical problems of the above-mentioned prior art that the floor slab is heavy, long production cycle, no sound insulation and heat preservation, and poor shock resistance.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

A prefabricated thermal insulation floor slab with a light steel skeleton, comprising a concrete layer one and a thermal insulation layer, the concrete layer one and the thermal insulation layer are connected through a steel skeleton, and the steel skeleton includes cold-formed thin-walled light steel, stressed steel bars, and horizontal steel connectors and U-shaped connectors, the cold-formed thin-walled light steel, stressed steel bars and horizontal steel connectors are all set in the concrete layer one, and the cold-formed thin-walled light steels are horizontally arranged in the concrete layer one, the The upper end of the cold-formed thin-walled light steel is connected to the horizontally arranged stress reinforcement, and the lower end is connected to the horizontal steel connector. The U-shaped connector is set through the insulation layer, and its open end is connected to the horizontal steel connector. The U-shaped The middle horizontal part of the connecting piece and the horizontal steel mesh connected thereto are all arranged in the insulation layer.

Preferably, the stressed steel bars are horizontally arranged at intervals and vertically intersect with the cold-formed thin-walled light-weight steel, and the stressed steel bars are connected to the upper horizontal flange of the cold-formed thin-walled light-weight steel through a fixing piece.

Preferably, the horizontal steel connectors are arranged side by side at intervals and parallel to the stressed steel bars, the horizontal steel connectors are connected to the lower horizontal flange of the cold-formed thin-walled light steel through bolts, and the horizontal steel connectors are vertically above the A plurality of support plates are provided, and hollow circular tubes are erected between two adjacent support plates, and the hollow circular tubes are horizontally arranged between the horizontal steel connectors and the reinforced steel bars.

Preferably, three supporting plates are arranged between adjacent cold-formed thin-walled light-gauge steels, and two hollow circular pipes are erected above the three supporting plates.

Preferably, the horizontal steel connector is a split structure, which is assembled by sequentially connecting several connecting plates. One end of the connecting plate is provided with a horizontal step, and the other end is provided with a vertical plate. The horizontal step and the cold-formed thin The horizontal flange at the lower end of the wall light steel is connected by a vertical bolt pair, and the vertical plate is connected with the vertical web of the adjacent cold-formed thin-wall light steel by a horizontal bolt pair.

Preferably, the thermal insulation layer includes a thermal insulation board and an outer protective layer, the two open ends of the U-shaped connector penetrate the thermal insulation board, and its ends extend to the concrete layer, and the two open ends of the U-shaped connector The end is provided with an external thread, and its end passes through the horizontal steel connector and is fixed with a nut; the outer protective layer includes the second concrete layer and the plastering layer, the steel mesh is arranged in the second concrete layer, and the plastering layer Spray on the outer surface of the second concrete layer.

Preferably, the reinforcement mesh is formed by connecting and fixing crossed longitudinal reinforcement bars and transverse reinforcement bars, the U-shaped connector is arranged through the reinforcement mesh, and its middle horizontal part is arranged below the reinforcement mesh.

Further, the longitudinal steel bars are arranged two by two in the middle horizontal part of the U-shaped connector, and the transverse steel bars are arranged parallel to the middle horizontal part of the U-shaped connector.

Preferably, the cross-section of the cold-formed thin-walled light steel is channel-shaped, Z-shaped or C-shaped.

Preferably, the insulation board is made of graphite polystyrene foam or extruded board material, with a thickness of 50-80mm.

The beneficial effects produced by adopting the above technical solution are: compared with the prior art, the utility model provides a light steel frame prefabricated thermal insulation floor with the advantages of light weight, material saving, high strength, low cost, and excellent thermal insulation performance. Short production cycle, convenient prefabrication, convenient transportation, impact resistance, and effective earthquake resistance; at the same time, the insulation layer and steel frame are arranged in the steel mesh, which can further improve the strength and service life.

Description of drawings

Fig. 1 is a structural schematic diagram of a light steel skeleton prefabricated thermal insulation floor slab provided by the embodiment of the present invention;

Fig. 2 is the structural diagram when not pouring concrete in the utility model embodiment;

Fig. 3 is a perspective view of Fig. 1;

Fig. 4 is a perspective view of Fig. 2;

Fig. 5 is the B direction view of Fig. 4;

Fig. 6 is a partial enlarged view of place A in Fig. 2;

In the figure: 1—cold-formed thin-walled light steel; 2—horizontal steel connecting piece, 20—connecting plate, 21—supporting plate, 22—horizontal step, 23—standing plate; 3—U-shaped connecting piece; 41—stress Rebar; 42—transverse reinforcement; 43—longitudinal reinforcement; 5—insulation board; 6—hollow circular tube; 71—horizontal bolt pair; 72—vertical bolt pair; 8—concrete layer 1; 9—fixing piece; 10—concrete layer II; 11 - Plastering layer.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Fig. 1-5, a light steel frame prefabricated thermal insulation floor slab provided by the utility model includes a concrete layer 8 and a thermal insulation layer, the concrete layer 8 is connected with the thermal insulation layer through a steel skeleton, and the steel skeleton includes a cold Bending thin-walled light steel 1, stressed steel bars 41, horizontal steel connectors 2 and U-shaped connectors 3, the cold-formed thin-walled light steel 1, stressed steel bars 41 and horizontal steel connectors 2 are all arranged on the first concrete layer 8, the cold-formed thin-walled light steel 1 is horizontally arranged in the concrete layer 8, the upper end of the cold-formed thin-walled light steel 1 is connected to the horizontally arranged stress reinforcement 41, and the lower end is connected to the horizontal steel connector 2 , the U-shaped connector 3 is set through the insulation layer, and its open end is connected to the horizontal steel connector 2, and the middle horizontal part of the U-shaped connector 3 and the horizontal steel mesh connected thereto are all arranged in the insulation layer . The steel skeleton is used to improve the overall strength, and the insulation layer is used to improve the heat insulation performance. At the same time, it is convenient for prefabrication, convenient transportation, and has good impact resistance and earthquake resistance.

Wherein, the cross-section of the cold-formed thin-walled light steel 1 is channel-shaped, Z-shaped or C-shaped.

Referring to Figures 1 and 4, the stressed steel bars 41 are horizontally arranged at intervals and vertically intersect with the cold-formed thin-walled light steel 1, and the stressed steel bars 41 are connected to the upper horizontal wing of the cold-formed thin-walled light-weight steel 1 through the fixing piece 9. edge connection. The mechanical performance of the top of the floor slab is improved by using the reinforced steel bars.

Referring to Figures 2, 4, and 6, the horizontal steel connectors 2 are arranged side by side at intervals and parallel to the stressed steel bars 41, and the horizontal steel connectors 2 are connected to the lower horizontal flange of the cold-formed thin-walled light-gauge steel 1 by bolts , several support plates 21 are vertically arranged above the horizontal steel connector 2, and hollow round tubes 6 are erected between two adjacent support plates 21, and the hollow round tubes 6 are horizontally arranged between the horizontal steel connector 2 and the receiving Between the force reinforcing bars 41, and utilize steel wire that hollow pipe is fixed. Among them, three supporting plates 21 are arranged between adjacent cold-formed thin-walled light steels 1 , and two hollow round pipes 6 are erected above the three supporting plates 21 . The self-weight of the floor slab is reduced through the hollow circular tube, and the insulation effect of the floor slab is also improved, which is beneficial to the layout of pipelines such as water heating and electricity.

Referring to Figures 2 and 6, the horizontal steel connector 2 is a split structure, which is assembled by sequentially connecting several connecting plates 20, one end of the connecting plate 20 is provided with a horizontal step 22, and the other end is provided with a vertical plate 23, The horizontal step 22 is connected to the lower horizontal flange of the cold-formed thin-walled light-gauge steel 1 through a vertical bolt pair 72, and the vertical plate 23 is connected to the vertical web of the adjacent cold-formed thin-walled light-gauge steel 1 through a horizontal bolt pair 71 . The split structure of the horizontal steel connector is more convenient to manufacture and install, and improves work efficiency.

Referring to Fig. 1, 3, described thermal insulation layer comprises thermal insulation board 5 and outer protective layer, two open ends of described U-shaped connector 3 run through thermal insulation board 5, and its end extends to concrete-8 layers, and described U The two open ends of the type connector 3 are provided with external threads, and its ends pass through the horizontal steel connector 2 and are fixed with nuts; the outer protective layer includes a concrete layer 10 and a plastering layer 11, and the steel mesh is set In the second concrete layer 10, the plaster layer 11 is sprayed on the outer surface of the second concrete layer 10. Wherein, the insulation board 5 is made of graphite polystyrene foam or extruded board material with a thickness of 50-80mm. The use of insulation boards can further reduce the overall weight of the floor, and the use of insulation materials can improve the insulation effect.

Referring to FIG. 5 , the reinforcement mesh is formed by connecting and fixing crossed longitudinal reinforcement bars 43 and transverse reinforcement bars 42 , the U-shaped connector 3 is arranged through the reinforcement mesh, and its middle horizontal part is arranged below the reinforcement mesh. Wherein, the longitudinal reinforcing bars 43 are arranged in pairs in the middle horizontal portion of the U-shaped connector 3 , and the transverse reinforcing bars 42 are arranged parallel to the middle horizontal portion of the U-shaped connecting member 3 . Use U-shaped connectors to fix the steel mesh and insulation board on the lower side of the insulation board, so that it can be reliably connected to the steel frame.

The manufacturing steps of the present utility model are as follows:

The first step is to make the steel skeleton, stress reinforcement, longitudinal reinforcement and transverse reinforcement in the prefabrication factory.

In the prefabrication plant, according to the design size and structural requirements of the floor, make the corresponding cold-formed thin-walled light steel, horizontal steel connectors, stress reinforcement 41, transverse reinforcement 42 and longitudinal reinforcement 43.

In the second step, the insulation board 5 is installed in the prefabrication factory.

First place the steel mesh on the lower side of the insulation board, bind it with iron wires to fix the steel mesh, install the U-shaped connector 3 at the pre-designed position, and punch holes on the insulation board 5, corresponding to the position of the U-shaped connector 3 The insulation board 5 is installed, so that the reinforcement mesh sheet is connected with the insulation board.

The third step is to install the steel skeleton.

According to the design, place cold-formed thin-walled light steel 1 on the insulation board 5, place it according to the designed spacing, and then install the horizontal steel connector 2. The bolt holes on the horizontal steel connector 2 are open to the U-shaped connector 3 corresponding to each other, and fixed with nuts; at the same time, bolts are used to connect the cold-formed thin-walled light steel 1 and the horizontal steel connectors, install and fix them one by one, and install the hollow circular tube 6 on the vertical support plate on the horizontal steel connector 2, And fix it with wire.

The fourth step is to install the stressed steel bars on the upper layer of cold-formed thin-walled light steel.

On the upper edge of the cold-formed thin-walled section steel 1, the stressed steel bars 41 are arranged according to the designed position, and fixed with the fixing piece 9.

The fifth step is to pour the concrete.

Concrete is poured into the steel frame to form a concrete layer 18, so that the structure forms a light steel frame thermal insulation and load-bearing hollow prefabricated floor slab.

In the sixth step, concrete is sprayed on the steel wire mesh of the base plate to form a concrete layer 2 10 .

When the strength of the upper prefabricated slab meets the design requirements, after the floor slab is turned over, the surface of the wire mesh is plastered with a concrete spray gun to form a plaster layer, thereby completing the structural fabrication.

In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (10)

1. A light steel skeleton prefabricated thermal insulation floor, is characterized in that: comprise concrete layer one and thermal insulation layer, described concrete layer one is connected with thermal insulation layer by steel skeleton, and described steel skeleton comprises cold-formed thin-walled light steel, stressed Steel bars, horizontal steel connectors and U-shaped connectors, the cold-formed thin-walled light steel, stressed steel bars and horizontal steel connectors are all arranged in the first concrete layer, and the cold-formed thin-walled light steel is horizontally arranged on the concrete layer In the first layer, the upper end of the cold-formed thin-walled light steel is connected to the horizontal steel reinforcement, and the lower end is connected to the horizontal steel connector. The U-shaped connector is set through the insulation layer, and its open end is connected to the horizontal steel connector. The middle horizontal part of the U-shaped connector and the horizontal reinforcement mesh connected thereto are both arranged in the insulation layer. 2. A prefabricated thermal insulation floor slab with light steel skeleton according to claim 1, characterized in that: the stressed steel bars are arranged at intervals horizontally and vertically intersect with the cold-formed thin-walled light steel, and the stressed steel bars pass through the fixing parts It is connected with the upper horizontal flange of cold-formed thin-wall light steel. 3. A light steel frame prefabricated thermal insulation floor slab according to claim 2, characterized in that: the horizontal steel connectors are arranged side by side at intervals and parallel to the stressed steel bars, and the horizontal steel connectors are connected by bolts and cold-formed The lower ends of the thin-walled light-gauge steel are connected by horizontal flanges, and several support plates are vertically arranged above the horizontal steel connectors, and hollow round tubes are erected between two adjacent support plates, and the hollow round tubes are horizontally arranged on the horizontal steel Between the connector and the stressed reinforcement. 4. A light steel frame prefabricated thermal insulation floor slab according to claim 3, characterized in that: three supporting plates are arranged between adjacent cold-formed thin-walled light steel, and two hollow circular tubes are erected above the three supporting plates. 5. A light steel framework prefabricated thermal insulation floor slab according to claim 1, characterized in that: the horizontal steel connector is a split structure, which is assembled by connecting several connecting plates in sequence, and one end of the connecting plate is set There is a horizontal step and a vertical plate at the other end, the horizontal step is connected with the lower horizontal flange of the cold-formed thin-walled light steel through a vertical bolt pair, and the vertical plate is connected with the adjacent cold-formed thin-walled light-gauge steel through a horizontal bolt pair connected by vertical webs. 6. A light steel frame prefabricated thermal insulation floor according to any one of claims 1-5, characterized in that: the thermal insulation layer includes a thermal insulation board and an outer protective layer, and the two open ends of the U-shaped connector The two open ends of the U-shaped connectors are provided with external threads, and the ends of the U-shaped connectors pass through the horizontal steel connectors and are fixed with nuts; the outer protective layer includes The second concrete layer and the plastering layer, the steel mesh is arranged in the second concrete layer, and the plastering layer is sprayed on the outer surface of the second concrete layer. 7. A prefabricated thermal insulation floor slab with light steel skeleton according to claim 6, characterized in that: the steel mesh is formed by connecting and fixing cross longitudinal steel bars and transverse steel bars, and the U-shaped connectors are set through the steel mesh , and the middle horizontal part is set under the reinforcement mesh. 8. A light steel frame prefabricated thermal insulation floor slab according to claim 7, characterized in that: the longitudinal steel bars are arranged in pairs in the middle horizontal part of the U-shaped connector, and the transverse steel bars are parallel to the U-shaped connector. Intermediate level setup. 9. A light steel frame prefabricated thermal insulation floor slab according to claim 1, characterized in that: the cross section of the cold-formed thin-walled light steel is channel-shaped, Z-shaped or C-shaped. 10. A light steel framework prefabricated thermal insulation floor slab according to claim 6, characterized in that: the thermal insulation board is graphite polystyrene foam or extruded board material with a thickness of 50-80mm.