Laminated slab

Abstract

The utility model relates to a laminated slab, belongs to the technical field of buildings, and solves the problems that the laminated surface and the joint of the laminated slab in the prior art are easy to crack, and the strength and the overall service life of the laminated slab are influenced. The composite floor comprises a bottom plate, a joint part and a laminated layer, the joint part is arranged between the two adjacent left and right bottom plates, and the laminated layer is arranged at the upper parts of the two adjacent left and right bottom plates and the joint part; a boss and a concave part are arranged on the upper surface of the bottom plate, and the laminated layer is provided with a convex part and a groove; the boss can be embedded into the groove, and the protruding part can be embedded into the concave part of the bottom plate. And an embedding structure is arranged at the edge of the side part of the bottom plate and is used for being connected with the joint part. According to the utility model, the phenomena of cracks at the laminated surface of the laminated slab and leakage at the joint can be reduced.

Description

Technical Field

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

[0002] Composite slabs are currently the most widely used horizontal components in prefabricated buildings. Existing composite slabs require molds to cast the bottom plate, and then cast the composite layer on top of the bottom plate. When in use, the prefabricated part and the cast-in-place part are superimposed to form a plate structure that bears the force together. During the on-site construction of the two-way composite slab, the joints are cast at the joints between the two composite slabs. Due to the low bonding strength between the new and old concrete, the composite surface and joints are prone to cracking and leakage when the floor load is large, affecting the strength and overall service life of the composite slab. Utility Model Content

[0003] In view of the above analysis, the embodiment of the utility model aims to provide a composite board to solve the problem that the composite surfaces and joints of the existing composite boards are prone to cracking, which affects the strength and overall service life of the composite boards.

[0004] The purpose of this utility model is mainly achieved through the following technical solutions:

[0005] A laminated board comprises a bottom board, a joint portion and a laminated layer;

[0006] The joint portion is arranged between two adjacent bottom plates on the left and right, and the overlapping layer is arranged between the two adjacent bottom plates on the left and right and the upper part of the joint portion;

[0007] The upper surface of the bottom plate is provided with a boss and a recessed portion, and the stacked layer has a boss and a recessed portion; the boss can be embedded in the recessed portion of the bottom plate;

[0008] A chimeric structure is provided at the side edge of the bottom plate for connecting with the seam portion.

[0009] Furthermore, the bottom area of ​​the boss is smaller than the top area.

[0010] Furthermore, the surfaces of the boss and the recessed portion have a concave-convex structure, the concave-convex structure is used to increase the roughness of the base plate, the depth of the concave-convex structure is ≤3 cm, and the surface area of ​​the concave-convex structure is ≥80% of the interface area between the base plate and the laminated layer.

[0011] Furthermore, the interlocking structure is sawtooth-shaped or hook-shaped.

[0012] Furthermore, the sawtooth teeth are rectangular, triangular or trapezoidal structures.

[0013] Furthermore, the hook-tooth shape is a hook shape with an inwardly turned edge.

[0014] Furthermore, the base plate is formed by 3D printing.

[0015] Furthermore, a first steel mesh and a second steel mesh are provided; the first steel mesh is provided inside the bottom plate and extends to the joint portion; the second steel mesh is provided inside the laminated layer.

[0016] Furthermore, a steel bar truss is provided, wherein the steel bar truss is embedded in the bottom plate and passes through the interface between the bottom plate and the laminated layer.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) Compared with the prior art, the upper surface of the bottom plate is provided with a boss and a recessed portion, and the laminated layer can enter the recessed portion when being cast, forming a protruding portion of the laminated layer, while the boss of the bottom plate forms a recess of the laminated layer. Thus, the bottom plate and the laminated layer form a mutually staggered and interlocking structure, which enhances the integrity and stability of the structure, and improves the bearing capacity and bending, shear and seismic resistance of the laminated plate. The bottom area of ​​the boss is set to be smaller than the top area, so that the inlaid parts are more tightly combined.

[0019] (2) Compared with the prior art, a sawtooth or hook-shaped interlocking structure is provided on both sides of adjacent base plates, so that the concrete poured later at the joint is interlocked with the concrete poured earlier at the base plate, thereby improving the overall stability of the composite plate, making the building more solid and reliable, and avoiding cracks and leakage between the base plate and the joint.

[0020] (3) The upper surface of the base plate is roughened, with the depth of the concave and convex surface ≤ 3 cm and the surface area of ​​the rough surface ≥ 80% of the interface area, so as to increase the surface roughness of the base plate, thereby enhancing the bonding force between the base plate and the laminated layer and improving the overall performance of the laminated board.

[0021] (4) The utility model is provided with steel meshes, wherein the first steel mesh is arranged inside the bottom plate and extends to the joint portion, and the second steel mesh is arranged inside the laminated layer to effectively disperse the force and ensure the safety of the laminated plate.

[0022] (5) The steel truss is embedded in the base plate and passes through the interface between the superimposed layer and the base plate to enhance the shear bearing capacity of the superimposed layer and the base plate and improve the firmness of the interface.

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0025] Figure 1 It is a schematic diagram of the top view of the composite plate structure of a specific embodiment;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of a laminated plate according to a specific embodiment;

[0027] Figure 3 It is a schematic diagram of the bottom plate structure from top view in a specific embodiment;

[0028] Figure 4 It is a cross-sectional structural diagram of a bottom plate of a specific embodiment;

[0029] Figure 5 A schematic diagram of a bottom plate interlocking structure of a specific embodiment as a hook-tooth structure;

[0030] Figure 6 It is a schematic diagram of the structure after the base plate of a specific embodiment is assembled.

[0031] Reference numerals:

[0032] 1-bottom plate, 101-boss, 102-interlocking structure, 103-first steel mesh, 2-joining portion, 3-overlapping layer, 301-third steel mesh, 4-steel truss. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] A specific embodiment of the utility model is as follows Figure 1 and Figure 2As shown, a composite board is disclosed, including a base plate 1, a joint portion 2 and a composite layer 3. The composite board is formed by pouring a cast material at the joint portion 2 between two adjacent base plates 1 on the left and right, and then pouring a cast material on the base plate 1 and the joint portion 2 to form a composite layer 3. The base plate 1, the joint portion 2 and the composite layer 3 together form the composite board. The cast material in this embodiment is cement. As an alternative to this embodiment, cement or other cast materials for construction may also be used.

[0035] like Figure 3 and Figure 4 As shown, the bottom plate 1 is made by 3D printing, and a first steel mesh 103 is embedded in the bottom plate 1. The first steel mesh 103 includes transverse steel bars and longitudinal steel bars, and the steel bars in each direction are parallel to each other and spaced apart from each other to effectively disperse the force and ensure the safety of the composite plate.

[0036] The bottom plate 1 is made by 3D printing, does not require a mold, has fast molding, and has high production efficiency. A steel mesh structure is embedded inside, which has a stable structure and strong bearing capacity.

[0037] The upper surface of the base plate 1 is used for pouring the superimposed layer 3. Since the superimposed layer 3 is cast later, the bonding force between the new and old concrete is low. When the floor load is large, the superimposed surface is prone to cracking. In order to improve the bonding force between the base plate 1 and the superimposed layer 3 and enhance the crack resistance between the interfaces, a boss 101 and a recessed portion are provided on the upper surface of the base plate 1. When pouring the superimposed layer 3, concrete is poured into the recessed portion to form a protruding portion of the superimposed layer 3, and the boss forms a groove of the superimposed layer 3. The superimposed layer 3 and the base plate 1 are interlaced and interlocked with each other to form a stable whole.

[0038] The cross section of the boss 101 may be square, circular or other shapes. Further, in order to make the bottom plate 1 and the laminated layer 3 more closely combined, the bottom area of ​​the boss 101 is smaller than the top area.

[0039] Compared with the prior art, the upper surface of the bottom plate 1 is provided with a boss 101 and a recessed portion, and the laminated layer 3 can enter the recessed portion when being cast, forming a protruding portion of the laminated layer 3, while the boss forms a groove of the laminated layer 3. Thus, the bottom plate 1 and the laminated layer 3 form a mutually staggered and interlocking structure, which enhances the integrity and stability of the structure, and improves the bearing capacity and bending, shear and seismic performance of the laminated plate. The bottom area of ​​the boss 101 is set to be smaller than the top area, so that the inlaid part is more tightly combined.

[0040] Furthermore, the upper surface of the bottom plate 1 is roughened to improve the surface roughness of the prefabricated board between the bottom plate 1 and the laminated layer 3, thereby enhancing the bonding force between the bottom plate 1 and the laminated layer 3 and improving the overall performance of the laminated board. Specifically, the depth of the concave-convex surface of the top surface of the bottom plate 1 is ≤3 cm, and the surface area of ​​the rough surface is ≥80% of the interface area.

[0041] Concrete is poured between two adjacent bottom plates 1, which is the joint 2. Since the concrete of the joint 2 is new concrete and the bottom plate 1 is old concrete, the bonding strength between the new and old concretes between the bottom plate 1 and the joint 2 is low, which is prone to cracks and leakage. Furthermore, a mosaic structure 102 is provided at the edge of one side of the long side of the bottom plate 1, and the mosaic structure 102 is serrated or hooked. The teeth of the serrated teeth are rectangular, triangular or trapezoidal structures. Figure 5 As shown, the hook tooth shape is a hook shape with the edge turned inward.

[0042] The height of the joint 2 is consistent with the height of the mouth of the groove 101 of the bottom plate 1. When the joint 2 is poured, concrete is poured into the saw teeth or hook teeth, and the new and old concrete form a chimeric structure 102, which improves the overall stability of the composite board and makes the building more solid and reliable.

[0043] Compared with the prior art, a serrated or hooked interlocking structure 102 is provided on both sides of adjacent base plates 1, so that the concrete poured later in the joint part 2 can be interlocked with the concrete poured earlier in the base plate 1, thereby improving the overall stability of the composite plate, making the building more solid and reliable, and avoiding cracks and leakage between the base plate 1 and the joint part 2.

[0044] like Figure 6 As shown, two base plates 1 are joined together, and after the middle joint 2 is cast, the superimposed layer 3 is cast on the upper part of the base plates 1 and the joint 2 .

[0045] A second steel mesh 301 is arranged inside the laminated layer 3. The second steel mesh 301 includes longitudinal steel bars and transverse steel bars. The steel bars in each direction are parallel to each other and spaced apart from each other to effectively disperse the force and ensure the safety of the laminated plate.

[0046] Furthermore, a "V"-shaped steel truss 4 is provided. The steel truss 4 is pre-buried in the base plate 1. After the composite layer 3 is cast, the steel truss 4 passes through the interface between the base plate 1 and the composite layer 3 to enhance the shear bearing capacity of the composite layer 3 and the base plate 1 and improve the firmness of the interface.

[0047] Specifically, the method for making the composite plate is as follows: making a 3D printed base plate 1, including making a groove 101 on the upper surface of the base plate 1 and a mosaic structure 102 on the side. During the printing process, the first steel mesh 103 and the steel truss 4 are embedded. After the printing is completed, the base plate 1 is transported to the site, and an integral joint form is adopted between two adjacent base plates 1 to cast and form a joint part 2. Using a mold, the composite layer 3 is cast, and the second steel mesh 301 is embedded to complete the production of the entire composite plate.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A composite board, characterized in that: It comprises a bottom plate (1), a joint portion (2) and a laminated layer (3); The joint portion (2) is arranged between two adjacent bottom plates (1) on the left and right, and the stacking layer (3) is arranged on the upper part of the two adjacent bottom plates (1) on the left and right and the joint portion (2); The upper surface of the bottom plate (1) is provided with a boss (101) and a recessed portion, and the stacked layer (3) has a boss and a recessed portion; the boss (101) can be embedded in the recessed portion, and the boss can be embedded in the recessed portion; A chimeric structure (102) is provided at the side edge of the bottom plate (1) for connecting with the seam portion (2).

2. The composite board according to claim 1, characterized in that: The bottom area of ​​the boss (101) is smaller than the top area.

3. The laminated board according to claim 2, characterized in that: The surfaces of the boss (101) and the recessed portion have a concave-convex structure, and the concave-convex structure is used to increase the roughness of the base plate (1); the depth of the concave-convex structure is ≤3 cm, and the surface area of ​​the concave-convex structure is ≥80% of the bonding interface area of ​​the base plate (1) and the laminated layer (3).

4. The composite board according to claim 1, characterized in that: The interlocking structure (102) is in a sawtooth shape or a hook tooth shape.

5. The composite board according to claim 4, characterized in that: The sawtooth teeth are rectangular, triangular or trapezoidal in structure.

6. The laminated board according to claim 4, characterized in that: The hook-shaped teeth are hook-shaped with edges turned inwards.

7. The composite panel according to claim 1, characterized in that: The base plate (1) is made by 3D printing.

8. The composite panel according to claim 1, characterized in that: A first steel mesh sheet (103) and a second steel mesh sheet (301) are also provided.

9. The composite board according to claim 8, characterized in that: The first steel mesh sheet (103) is arranged inside the bottom plate (1) and extends to the joint portion (2); the second steel mesh sheet (301) is arranged inside the laminated layer (3).

10. The composite board according to any one of claims 1 to 9, characterized in that: A steel truss (4) is also provided, the steel truss (4) is pre-buried inside the base plate (1), and the steel truss (4) passes through the interface between the base plate (1) and the laminated layer (3).

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