A prefabricated floor with an integrated functional floor

Abstract

The application provides a prefabricated floor with a lower integrated functional layer, comprising: at least one shear key, the shear key comprising a main body and three or more connecting rods fixed to both sides of the main body and extending horizontally; the three or more connecting rods comprising at least a first connecting rod arranged on the bottom side of the main body, a second connecting rod arranged on the middle side of the main body and a third connecting rod arranged on the top side of the main body; a first steel mesh arranged horizontally around the bottom of the shear key and connected with the first connecting rod; a first prefabricated bottom plate cast on the plane of the first steel mesh and connected with the bottom of the shear key after solidification; and a functional layer arranged horizontally between the upper surface of the first prefabricated bottom plate and the horizontal space between the second connecting rods. The application fills two technical gaps in the industry and has better structural characteristics.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of building technology, and particularly relates to a prefabricated floor with a lower-set integrated functional layer. BACKGROUND

[0002] With the rapid development of society, science and technology are widely applied in the field of construction. The prefabricated assembly is produced in a factory and then transported to the site for assembly construction. This construction mode can greatly reduce the generation of construction waste and the discharge of construction sewage. This construction mode not only reduces the construction noise, but also reduces the emission of harmful gases and construction dust. The number of site construction and management personnel is greatly reduced. This construction mode has the advantages of saving building materials and energy saving.

[0003] The existing prefabricated assembly only contains a prefabricated concrete bottom plate and a truss rib when it is manufactured and delivered. It has the above-mentioned advantages, but there are many inconveniences when using the existing prefabricated assembly for construction at the construction site.

[0004] For example, the surface of the prefabricated assembly is a leveling reference surface, so it is difficult to find a leveling reference when pouring concrete after the prefabricated assembly is assembled. Workers need to follow the existing leveling steps in order. Therefore, there is currently no requirement for prefabricated floors to have additional leveling reference standards, which is a technical gap in the prefabricated floor field.

[0005] In addition, when the prefabricated assembly is assembled, the functional layer such as thermal insulation and sound insulation is usually laid on the surface of the prefabricated assembly, and then a leveling layer is laid on the surface of the functional layer. There is no component to firmly connect the leveling layer and the prefabricated assembly, so the leveling layer lacks deformation constraint from the prefabricated assembly. Once the functional layer arches, the leveling layer will deform and crack without deformation constraint, which will accelerate the aging of the structural floor after cracking. Not only does it damage the appearance, but it also affects the performance and safety of the floor. For this problem, the existing technology also does not propose a corresponding requirement, which is also a technical gap in the field. SUMMARY

[0006] The purpose of the present application is to provide a prefabricated floor with a lower-set integrated functional layer. The prefabricated floor puts the functional layer into the prefabricated floor, and introduces a shear key to connect the structural floor and the prefabricated bottom plate, so that the structural floor is better constrained by the deformation of the prefabricated bottom plate and has better integrity.

[0007] The present application provides a prefabricated floor with a lower-set integrated functional layer, comprising:

[0008] at least one shear key, the shear key comprising a main body and three or more connecting rods fixed to both sides of the main body and extending horizontally to both sides; the three or more connecting rods comprising at least: first connecting rods arranged on the bottom side of the main body, second connecting rods arranged on the middle side of the main body, and third connecting rods arranged on the top side of the main body;

[0009] a first reinforcement mesh arranged horizontally around the bottom of the shear key and connected to the first connecting rods;

[0010] a first precast slab cast on the plane of the first reinforcement mesh and connected to the bottom of the shear key after solidification; and

[0011] a functional layer arranged horizontally between the upper surface of the first precast slab and the second connecting rods.

[0012] According to an embodiment of the present application, the top end of the main body is flush with the horizontal plane.

[0013] According to an embodiment of the present application, the connecting rods comprise: threaded rods connected horizontally to the main body; or steel bars arranged horizontally through the main body.

[0014] According to an embodiment of the present application, the first connecting rods, the second connecting rods, and the third connecting rods are arranged equidistantly.

[0015] According to an embodiment of the present application, the functional layer comprises one or more of the following in any combination: a thermal insulation layer, a sound insulation layer, and / or a waterproof layer.

[0016] According to an embodiment of the present application, further comprising: a second reinforcement mesh arranged horizontally above the functional layer and connected to the second connecting rods.

[0017] According to an embodiment of the present application, a plurality of the shear keys are arranged vertically on the first precast slab in columns or in an array.

[0018] According to an embodiment of the present application, further comprising: a third reinforcement mesh arranged horizontally on the top of the main body and connected to the third connecting rods.

[0019] According to an embodiment of the present application, further comprising: a second precast slab cast on the plane of the second reinforcement mesh and connected to the middle of the shear key after solidification; the second precast slab covering above the functional layer.

[0020] According to an embodiment of the present application, further comprising:

[0021] A cast-in-place layer is arranged in a space between a plane where the top end of the main body part is located and the functional layer, or in a space between the plane where the top end of the main body part is located and the second prefabricated bottom plate.

[0022] Advantages of the present application:

[0023] The present application establishes a connection between the cast-in-place layer (replacing the existing leveling layer) and the prefabricated bottom plate through a shear key, which not only limits the deformation of the leveling layer, but also improves the integrity of the floor.

[0024] By placing the functional layer under the prefabricated bottom plate and the leveling layer, and constraining the top of the functional layer by the second steel mesh and / or the second prefabricated bottom plate, the problem of arching of the functional layer is solved, and the problem of deformation and cracking of the cast-in-place layer is solved.

[0025] The top of the shear key is processed into a plane as a leveling reference surface, and the concrete is poured to be flush with the top plane through grouting, which reduces one construction process and improves construction efficiency from the construction process. The present application can improve the efficiency of the overall process, including greatly improving the production efficiency of the factory and the construction efficiency of the construction site, which reflects the industrialization advantage of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 Partial sectional view of the prefabricated floor in Example 1

[0028] Figure 2 Thickness comparison diagram of the prefabricated floor in Example 1 and the floor of the prior art.

[0029] Figure 3 Partial sectional view of the prefabricated floor in Example 2

[0030] Figure 4 Thickness comparison diagram of the prefabricated floor in Example 2 and the floor of the prior art.

[0031] Explanation of reference numerals:

[0032] 1-main body part;

[0033] 2-first connecting rod;

[0034] 3-second connecting rod;

[0035] 4 - third connecting rod;

[0036] 5 - first reinforcement mesh;

[0037] 6 - first prefabricated slab;

[0038] 7 - functional layer;

[0039] 8 - second reinforcement mesh;

[0040] 9 - third reinforcement mesh;

[0041] 10 - cast-in-place layer;

[0042] 11 - second prefabricated slab. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "connected" and the like should be broadly understood, for example, "connecting" can be fixedly connected, or detachably connected, or integrally connected. It can be a mechanical connection, or an electrical connection. It can be a direct connection, or an indirect connection through an intermediate medium, or a communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] Example 1

[0047] Figure 1An embodiment of the display of the prefabricated floor of the underlying integrated functional layer. The prefabricated floor comprises: one or more shear keys, a first steel mesh 5, a first prefabricated bottom plate 6, a functional layer 7 and a second steel mesh 8. Among them, the shear key comprises a main body part 1 and three groups of connecting rods fixed on both sides of the main body part 1 and horizontally extended to both sides; the three groups of connecting rods at least include: the first connecting rod 2 arranged on the bottom side of the main body part 1, the second connecting rod 3 arranged on the middle side, and the third connecting rod 4 arranged on the top side; the first steel mesh 5 is horizontally arranged around the bottom of the shear key and connected with the first connecting rod 2; the first prefabricated bottom plate 6 is cast on the plane where the first steel mesh 5 is located, and after curing, it is connected with the bottom of the shear key. The functional layer 7 is horizontally arranged between the upper surface of the first prefabricated bottom plate 6 and the horizontal space of the second connecting rod 3. The second steel mesh 8 is horizontally arranged above the functional layer 7 and connected with the second connecting rod 3.

[0048] In this embodiment, the connecting rod is made of a screw rod connected horizontally to the main body part 1. The first connecting rod 2, the second connecting rod 3 and the third connecting rod 4 are arranged equidistantly. Figure 1 The local view is shown, and a plurality of shear keys are arranged vertically in columns or arrays on the first prefabricated bottom plate 6. Specifically, the main body part 1 is a columnar structure, and the shape of the cross section of the column is not limited, including but not limited to rectangular, circular and polygonal, etc. The top end of the main body part 1 is processed into a plane with the same height, which is flush with the horizontal plane, thereby serving as a reference for casting the cast-in-place layer 10. The cast-in-place layer 10 does not need to be leveled, thereby replacing the leveling process in the prior art and simplifying the construction steps.

[0049] Specifically, the functional layer 7 refers to an intermediate layer composed of special materials such as thermal insulation layer, sound insulation layer and / or waterproof layer, etc. The prior art directly places it under the leveling layer, and once the functional layer 7 arches, the leveling layer without deformation constraint will deform and crack. In this embodiment, the functional layer 7 is placed between the second connecting rod 3 and the first prefabricated bottom plate 6, and then limited by the second steel mesh 8, thereby preliminarily solving the problem of arching deformation.

[0050] In the construction site, the third steel mesh 9 is bundled on site, and the third steel mesh 9 is bundled and connected with the third connecting rod 4. The second steel mesh 8 and the third steel mesh 9 are cast into the steel structure inside the cast-in-place layer 10. The cast-in-place layer 10 is made by pouring concrete onto the functional layer 7, and after the manufacturing is completed, the cast-in-place layer 10 is arranged in the space between the plane where the top end of the main body part 1 is located and the functional layer 7. As shown in Figure 2As shown, the overall thickness of the prefabricated floor is increased in the same thickness of the structural floor, which improves the overall structural performance. Moreover, the deformation and cracking of the floor are avoided due to the deformation constraint of the cast-in-place layer 10 and the functional layer 7.

[0051] Embodiment 2

[0052] Figure 3 An embodiment of the prefabricated floor with the underlying integrated functional layer is shown. The prefabricated floor comprises one or more shear keys, a first steel mesh 5, a first prefabricated bottom plate 6, a functional layer 7, a second steel mesh 8, and a second prefabricated bottom plate 11. The shear key comprises a main body 1 and three or more connecting rods fixed to both sides of the main body 1 and horizontally extending to both sides. The three or more connecting rods comprise at least a first connecting rod 2 arranged on the bottom side of the main body 1, a second connecting rod 3 arranged on the middle side, and a third connecting rod 4 arranged on the top side. The first steel mesh 5 is arranged horizontally around the bottom of the shear key and connected to the first connecting rod 2. The first prefabricated bottom plate 6 is cast on the plane of the first steel mesh 5 and connected to the bottom of the shear key after solidification. The functional layer 7 is arranged horizontally on the upper surface of the first prefabricated bottom plate 6 and in the horizontal space between the second connecting rod 3. The second steel mesh 8 is arranged horizontally above the functional layer 7 and connected to the second connecting rod 3. The second prefabricated bottom plate 11 is cast on the plane of the second steel mesh 8 and connected to the middle of the shear key after solidification. The second prefabricated bottom plate 11 covers the functional layer 7.

[0053] In this embodiment, the connecting rods are made of steel and arranged horizontally through the main body 1. The first connecting rod 2, the second connecting rod 3, and the third connecting rod 4 are arranged equidistantly. Figure 1 A partial view is shown, and a plurality of shear keys are arranged vertically in columns or arrays on the first prefabricated bottom plate 6. Specifically, the main body 1 is a columnar structure, and the shape of the cross section of the column is not limited, including but not limited to rectangular, circular, and polygonal. The top end of the main body 1 is processed into a flat surface with the same height, which is flush with the horizontal plane, thereby serving as a reference for casting the cast-in-place layer 10. The cast-in-place layer 10 does not need to be leveled, thereby replacing the leveling process in the prior art and simplifying the construction steps.

[0054] Specifically, the functional layer 7 refers to an intermediate layer composed of special materials such as a heat insulation layer, a sound insulation layer, and / or a waterproof layer. In the prior art, the functional layer 7 is directly placed under the leveling layer, and once the functional layer 7 is arched, the leveling layer without deformation constraint will be deformed and cracked. In the embodiment, the functional layer 7 is placed between the second prefabricated bottom plate 11 and the first prefabricated bottom plate 6, and is limited by the second prefabricated bottom plate 11, thereby further solving the problem of arching and deformation of the functional layer 7.

[0055] In the construction site, the third steel bar net 9 is bundled and connected with the third connecting rod 4, and the third steel bar net 9 is used as the internal steel bar structure of the cast-in-place layer 10. The cast-in-place layer 10 is made by pouring concrete on the second prefabricated bottom plate 11, and after the completion of the production, the cast-in-place layer 10 is arranged in the space between the plane where the main body part 1 is located and the second prefabricated bottom plate 11. As shown in FIG. 2, since the leveling layer is omitted, the overall thickness of the prefabricated floor slab is increased in the same thickness of the structure floor slab, and the overall structural property is better. Moreover, since the cast-in-place layer 10 and the functional layer 7 are both deformed and constrained, the deformation and cracking of the floor slab are avoided. Figure 4

[0056] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, improvement, equivalent replacement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. A prefabricated floor slab with a bottom-mounted integrated functional layer, characterized in that: include: At least one shear key, the shear key comprising a main body and three or more connecting rods fixed to two sides of the main body and extending horizontally to both sides; The three or more connecting rods include at least: a first connecting rod arranged on the bottom side of the main body, a second connecting rod located on the middle side, and a third connecting rod located on the top side; a first steel mesh horizontally arranged around the bottom of the shear key and connected to the first connecting rod; a first prefabricated bottom plate, cast on the plane where the first reinforcement mesh is located, and connected to the bottom of the shear key after solidification; and a functional layer horizontally laid in a horizontal space between the upper surface of the first prefabricated bottom plate and the second connecting rod; Also includes: a second steel mesh, arranged horizontally above the functional layer and connected to the second connecting rod; a second prefabricated base plate, cast on the plane where the second reinforcement mesh is located, and connected to the middle portion of the shear key after solidification; The second prefabricated bottom plate covers the functional layer; a third steel mesh, which is horizontally arranged on the top of the main body and connected to the third connecting rod; The cast-in-situ layer is arranged in the space between the plane where the top end of the main body is located and the second prefabricated bottom plate.

2. The prefabricated floor slab with bottom-mounted integrated functional layer according to claim 1, characterized in that: The top end of the main body is flush with the horizontal plane.

3. The prefabricated floor slab with bottom-mounted integrated functional layer according to claim 1, characterized in that: The connecting rod comprises: A screw rod horizontally connected to the main body; or a steel bar horizontally penetrating the main body.

4. The prefabricated floor slab with bottom-mounted integrated functional layer according to claim 1, characterized in that: The first connecting rod, the second connecting rod and the third connecting rod are arranged equidistantly.

5. The prefabricated floor slab with bottom-mounted integrated functional layer according to claim 1, characterized in that: The functional layer includes any combination of one or more of the following: a heat insulation layer, a sound insulation layer and / or a waterproof layer.

6. The prefabricated floor slab with bottom-mounted integrated functional layer according to claim 1, characterized in that: A plurality of the shear keys are vertically arranged on the first prefabricated bottom plate in a column or an array.

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