Lightweight laminated slab

Abstract

The utility model discloses a light-weight laminated slab which comprises a profiled steel sheet, concrete, filling blocks and steel bar trusses, the concrete is poured on the profiled steel sheet to form a laminated slab base plate, a plurality of steel bar trusses are arranged in the concrete, and the steel bar trusses are arranged in parallel at intervals. And a plurality of filling blocks which are arranged at intervals are placed between the steel bar trusses in the concrete. The profiled steel sheet is arranged at the bottom of the substrate of the laminated slab, so that the support-free span of the laminated slab is increased, the number of floor slabs and beams is reduced, the construction cost is reduced, and the construction period is shortened; secondary decoration work such as bottom painting is omitted; the sound insulation effect of the floor is enhanced through the light filling blocks.

Description

Technical Field

[0001] The utility model relates to the field of building structures, in particular to a light composite board. Background Art

[0002] Prefabricated buildings are a new type of construction method compared to cast-in-place concrete systems. They mainly modularize the original on-site operations, and change the modular components and parts to factories for mechanized, automated, and even intelligent production. These components and parts are then transported to the site for mechanized hoisting and prefabricated construction. Composite panels are assembled monolithic slabs made of prefabricated panels and cast-in-place reinforced concrete layers. They are a type of building material made of multiple layers of materials. Traditional prefabricated panels have steel support brackets embedded in the panels, and support beams are welded above the steel support brackets. The support beams can support the panels to improve the bending strength of the panels, that is, during storage, transportation, and construction, the support beams can prevent the panels from bending. Prefabricated composite panels are widely used in construction projects, and are characterized by high strength, moisture resistance, fire resistance, sound insulation, and heat insulation.

[0003] With the advancement of building industrialization, a new bottleneck of development has been ushered in. The main reason is that the cost of industrialized buildings has not achieved satisfactory results compared with traditional practices. Reducing the number of components is the most effective way to reduce the cost of industrialized buildings. The current unsupported span of composite slabs is too short, which results in more slabs and secondary beams when used. Therefore, it is urgent to increase the length of the unsupported span of composite slabs, reduce the number of composite slabs, and reduce the number of secondary beams when used. The introduction of ultra-long lightweight composite slabs is a breakthrough in solving the problem and will greatly promote the development of industrialized buildings. Utility Model Content

[0004] In order to solve the shortcomings of the prior art that the unsupported span of the composite slab is too short, resulting in many slabs and secondary beams when used, the applicant provides a lightweight composite slab with a reasonable structure. By arranging a corrugated steel plate at the bottom of the composite slab base plate, the unsupported span of the composite slab can be increased, the number of slabs and beams can be reduced, and secondary decoration work such as bottom painting can be eliminated.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A lightweight composite board comprises a corrugated steel plate, concrete, filling blocks and steel trusses. Concrete is poured on the corrugated steel plate to form a composite board base plate. A plurality of steel trusses are arranged in the concrete. The steel trusses are arranged in parallel and at intervals. A plurality of filling blocks are placed between the steel trusses in the concrete.

[0007] As a further improvement of the above technical solution:

[0008] The filling blocks are arranged in rows between the steel trusses in the concrete, and the filling blocks are embedded in the concrete.

[0009] The steel truss is composed of upper steel bars, lower steel bars and oblique steel bars. The upper steel bars and the lower steel bars are parallel to each other. The oblique steel bars use triangular waveforms to alternately connect the upper steel bars and the lower steel bars. The oblique steel bars are welded to the upper steel bars and the lower steel bars to form a steel truss.

[0010] Part of the diagonal steel bars are buried in the concrete, and the upper steel bars are exposed above the concrete.

[0011] Reinforcing steel bars are arranged at the ends of the steel trusses. The reinforcing steel bars adopt a bracket structure and are welded to the ends of the steel trusses.

[0012] The ends of the upper and lower steel bars on the steel truss are connected to the reinforcing steel bars.

[0013] The reinforcing steel bars are composed of steel bars with a diameter of 8mm-14mm.

[0014] The plurality of steel trusses are connected in the transverse direction by welding the transverse steel bars, and the transverse steel bars are transversely connected to the lower steel bars of the steel trusses.

[0015] The corrugated steel sheet is a cold-pressed galvanized steel sheet or a color-coated steel sheet. The corrugated steel sheet has a plurality of upwardly protruding inverted dovetail shapes, and the corrugated steel sheet is embedded with the concrete thereon through the inverted dovetails.

[0016] The thickness of the corrugated steel sheet is 0.4mm-1.0mm.

[0017] The beneficial effects of the utility model are as follows:

[0018] The thickness of the composite board base plate of the utility model is greater than that of the common composite board, but due to the filling of the lightweight blocks, the weight increase is limited, but the span without support is large, and because the bottom plate has a corrugated steel plate, it not only increases the bearing capacity during construction, but also eliminates the work of painting the bottom of the board. The steel trusses at the ends of the composite board base plate extend out to a certain length. By setting reinforcing steel bars, the extended steel trusses can be used as part of the support during construction, which not only enhances the safety of on-site construction, but also allows the concrete poured later on the steel beam to directly contact the flange surface of the steel beam. The bottom of the composite board base plate of the utility model has a corrugated steel plate, which is embedded in the precast concrete above and becomes one with the concrete above. The structure is stable and reliable, and prefabrication saves work time.

[0019] The technical advantages of the utility model are: by arranging a corrugated steel plate at the bottom of the composite board base plate, the support-free span of the composite board is increased, the number of floor slabs and beams is reduced, the project cost is reduced, and the construction period is shortened; secondary decoration work such as bottom painting is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a top view of the utility model.

[0021] Figure 2 It is a schematic diagram of the utility model.

[0022] Figure 3 It is a schematic diagram of the installation of the utility model.

[0023] In the figure: 1. Corrugated steel plate; 2. Concrete; 3. Filling block; 4. Steel truss; 5. Upper steel bars; 6. Lower steel bars; 7. Diagonal steel bars; 8. Transverse steel bars; 9. Reinforcing steel bars; 10. Steel beam. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 3 As shown, the lightweight composite board of the utility model comprises a corrugated steel plate 1, concrete 2, filling blocks 3 and steel trusses 4. Concrete 2 is poured on the corrugated steel plate 1 to form a composite board substrate. A plurality of steel trusses 4 are arranged in parallel and spaced apart. A plurality of filling blocks 3 are placed between the steel trusses 4 in the concrete 2 and are arranged in rows. The thickness of the concrete 2 is 100 mm to 250 mm.

[0026] The steel truss 4 is composed of upper steel bars 5, lower steel bars 6, and oblique steel bars 7. The upper steel bars 5 and the lower steel bars 6 are parallel to each other and are horizontally arranged along the length direction of the composite plate base. The oblique steel bars 7 are connected alternately with the upper steel bars 5 and the lower steel bars 6 in a triangular waveform. The oblique steel bars 7 are welded with the upper steel bars 5 and the lower steel bars 6 to form the steel truss 4. As a preferred embodiment, a part of the oblique steel bars 7 is buried in the concrete 2, and the upper steel bars 5 are exposed above the concrete 2.

[0027] The plurality of steel trusses 4 are connected by welding in the transverse direction through transverse steel bars 8, and the transverse steel bars 8 are transversely connected to the lower steel bars 6 of the steel trusses 4. Reinforcement steel bars 9 are arranged at the ends of the steel trusses 4, and the reinforcement steel bars 9 adopt a bracket structure, and the ends of the upper steel bars 5 and the lower steel bars 6 on the steel trusses 4 are connected to the reinforcement steel bars 9.

[0028] The corrugated steel sheet 1 is a galvanized cold-pressed steel sheet or a cold-pressed color steel sheet, and has a plurality of upwardly protruding reverse dovetail shapes, and the thickness of the corrugated steel sheet 1 is 0.4 mm-1.0 mm. The corrugated steel sheet 1 is embedded with the concrete thereon through the reverse dovetails.

[0029] The filling block 3 can be an organic or inorganic lightweight block, which is required to be light in weight, have a certain strength, and have a fire resistance of B1 or above. The thickness of the filling block 3 is 60mm-200mm, and it is embedded with the concrete 2 when pouring.

[0030] The reinforcing steel bar 9 is made of steel bars with a diameter of 8mm-14mm and is welded to the ends of the steel trusses 4 so that the steel trusses can be directly supported on the steel beams 10 during installation. The steel beams 10 are floor beams supporting the composite slabs, which are then cast into a whole with the steel beams 10 through welding nails.

[0031] When the utility model is implemented, the corrugated steel plate 1 is used as the bottom plate in the factory, ordinary concrete 2 is poured on it, and several steel trusses 4 and a plurality of lightweight filling blocks 3 are arranged to form a composite plate base plate, which is sent to the construction site for installation after the maintenance expires.

[0032] The thickness of the base plate of the composite board is larger than that of the common composite board, but the weight increase is limited due to the filling of the lightweight filling block 3, but the support-free span is large, and the bottom plate has a corrugated steel plate 1, which not only increases the bearing capacity during construction, but also eliminates the work of painting the bottom of the board.

[0033] The steel truss 4 at the end of the composite slab base plate extends out to a certain length. By arranging reinforcing steel bars 9, the extended steel truss 4 can be used as a part of the support during construction, which not only enhances the safety of on-site construction, but also enables the concrete poured on the steel beam 10 to directly contact the upper flange surface of the steel beam 10.

[0034] The above description is an explanation of the utility model, not a limitation of the utility model. The utility model can be modified in any form without violating the spirit of the utility model.

Claims

1. A lightweight composite panel, characterized in that: The invention comprises a corrugated steel plate (1), concrete (2), a filling block (3) and a steel truss (4). Concrete (2) is poured on the corrugated steel plate (1) to form a composite plate base plate. A plurality of steel trusses (4) are arranged in parallel and at intervals. A plurality of filling blocks (3) are placed at intervals between the steel trusses (4) in the concrete (2).

2. The lightweight composite panel according to claim 1, characterized in that: The filling blocks (3) are arranged in rows between the steel bar trusses (4) in the concrete (2), and the filling blocks (3) are embedded and fixed together with the concrete (2).

3. The lightweight composite panel according to claim 1, characterized in that: The steel bar truss (4) is composed of upper steel bars (5), lower steel bars (6), and oblique steel bars (7). The upper steel bars (5) and the lower steel bars (6) are parallel to each other. The oblique steel bars (7) are connected alternately in a triangular waveform to the upper steel bars (5) and the lower steel bars (6). The oblique steel bars (7) are welded to the upper steel bars (5) and the lower steel bars (6) to form the steel bar truss (4).

4. The lightweight composite panel according to claim 3, characterized in that: A portion of the oblique steel bars (7) is buried in the concrete (2), and the upper steel bars (5) are exposed above the concrete (2).

5. The lightweight composite panel according to claim 3, characterized in that: Reinforcing steel bars (9) are arranged at the ends of the steel bar trusses (4); the reinforcing steel bars (9) adopt a bracket structure and are welded together with the ends of the steel bar trusses (4).

6. The lightweight composite panel according to claim 5, characterized in that: The ends of the upper steel bars (5) and the lower steel bars (6) on the steel bar truss (4) are connected to the reinforcing steel bars (9).

7. The lightweight composite panel according to claim 5, characterized in that: The reinforcing steel bar (9) is composed of steel bars with a diameter of 8mm-14mm.

8. The lightweight composite panel according to claim 1, characterized in that: The plurality of steel bar trusses (4) are connected in the transverse direction by welding via transverse steel bars (8), and the transverse steel bars (8) are transversely connected to the lower steel bars (6) of the steel bar trusses (4).

9. The lightweight composite panel according to claim 1, characterized in that: The corrugated steel plate (1) is a cold-pressed galvanized steel plate or a color-coated steel plate. The corrugated steel plate (1) has a plurality of upwardly protruding reverse dovetail shapes. The corrugated steel plate (1) is embedded and fixed with the concrete (2) thereon via the reverse dovetail shapes.

10. The lightweight composite panel according to claim 1, characterized in that: The thickness of the corrugated steel plate (1) is 0.4 mm-1.0 mm.

Images