Fabricated precast concrete heat preservation and sound insulation floor

Abstract

The invention discloses an assembly type prefabricated concrete heat preservation and sound insulation floor slab, and relates to the technical field of prefabricated floor slabs. The assembly type prefabricated concrete heat preservation and sound insulation floor slab comprises a prefabricated bottom plate, a heat preservation layer plate is arranged on one surface of the prefabricated bottom plate, first heat preservation and sound insulation plates are arranged on the heat preservation layer plate and arranged in a state with a dead zone, and a non-dead zone of each first heat preservation and sound insulation plate is used for heat preservation and sound insulation; and the panel layer is poured on the side, close to the first heat preservation and sound insulation plate, of the prefabricated bottom plate, and the panel layer can fill the goaf. The face plate layers are in contact with the heat preservation layer plates after being poured, so that the contact area between the layer plates is increased, the contact strength between the layer plates is improved, a layer plate sandwich structure is formed, direct covering type installation of heat preservation plates in the traditional sense is improved through the structure, the connection strength between the structures is improved, and the heat preservation effect is improved. And meanwhile, the heat bridge effect is blocked by utilizing the low heat conductivity of the first heat-insulating and sound-insulating plate, so that the heat-insulating and sound-insulating effects are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of precast floor slabs, and particularly to an assembled precast concrete thermal insulation and sound insulation floor slab. Background Art

[0002] An assembled building refers to a building in which a large amount of on-site work in the traditional construction method is transferred to a factory. Building components and fittings (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory and transported to the building construction site, and are assembled and installed on-site through reliable connection methods. Due to the advantages of standardized manufacturing, convenient large-scale production, and convenient construction of assembled buildings, assembled buildings have developed rapidly in recent years. Among them, the assembled floor slab, as a part of the assembled building, has also developed rapidly. Precast concrete floor slabs are widely used in assembled buildings, which can reduce the use of formwork and improve construction efficiency.

[0003] Chinese Patent with publication number CN114457950A discloses an assembled precast concrete floor slab and a production method. By fixedly arranging installation sleeves on a steel mesh, after the precast bottom slab is poured, installation holes are reserved at the positions corresponding to the installation sleeves on the precast bottom slab. Thus, during the transportation of the precast bottom slab, the truss steel bars are separated from the installation sleeves. When multiple precast bottom slabs need to be spliced or after splicing, the leg steel bars are connected into the installation sleeves, so that the truss steel bars can be timely buried into the cast-in-place layer, reducing the rust phenomenon caused by the exposure of the truss steel bars to the external environment.

[0004] However, there are still certain deficiencies in the existing thermal insulation and sound insulation precast floor slabs during use. For example, the structural layers of the existing thermal insulation and sound insulation precast floor slabs are obvious, usually in the structure of concrete - thermal insulation board - concrete. Although this structure has good thermal insulation and sound insulation effects, after the cast-in-place concrete, the contact surface between the concrete slab layers is small and the connection strength is poor, resulting in a decrease in the floor load. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an assembled precast concrete thermal insulation and sound insulation floor slab, which solves the problems raised in the background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An assembled precast concrete thermal insulation and sound insulation floor slab, including a precast bottom slab, a thermal insulation layer board is provided on one surface of the precast bottom slab, a first thermal insulation and sound insulation board is provided on the thermal insulation layer board, the first thermal insulation and sound insulation board is arranged in a state with void areas, and the non-void areas of the first thermal insulation and sound insulation board are used for thermal insulation and sound insulation; a panel layer, the panel layer is poured on the side of the precast bottom slab close to the first thermal insulation and sound insulation board, and the panel layer can fill the void areas.

[0007] Furthermore, multiple groups of the first heat-insulating and sound-insulating boards are provided. The multiple groups of first heat-insulating and sound-insulating boards are arranged side by side, and there is an included angle between the first heat-insulating and sound-insulating board and the precast bottom plate. There is an empty area between two adjacent groups of first heat-insulating and sound-insulating boards, and there is an overlapping area between two adjacent groups of first heat-insulating and sound-insulating boards in the orthographic projection direction on the precast bottom plate.

[0008] Furthermore, the first heat-insulating and sound-insulating board includes a through groove which is opened on the heat-insulating layer board, and the area where the through groove is located is the first empty area; a third heat-insulating and sound-insulating board which is a structure cut into blocks and is arranged on one side of the through groove close to the panel layer. The third heat-insulating and sound-insulating board does not contact the through groove, and the third heat-insulating and sound-insulating boards are connected by third longitudinal bars. The area where the third longitudinal bars are located is the second empty area.

[0009] Furthermore, the size of the third heat-insulating and sound-insulating board is larger than that of the through groove, so that there is an overlapping part in the orthographic projection direction between the non-empty area between the third heat-insulating and sound-insulating board and the heat-insulating layer board.

[0010] Furthermore, a shear-resistant steel bar layer is provided between the precast bottom plate and the heat-insulating layer board. The shear-resistant steel bar layer includes first longitudinal bars which are evenly arranged in the precast bottom plate; second longitudinal bars which are evenly arranged in the heat-insulating layer board, and the orthographic projections of the second longitudinal bars and the first longitudinal bars in the vertical direction are arranged in a staggered manner; transverse bars which are arranged in the precast bottom plate, and the transverse bars and the first longitudinal bars have intersections, so that the first longitudinal bars and the transverse bars are combined to form a mesh structure. Both ends of the transverse bars are bent towards the direction away from the precast bottom plate to form connecting steel bars; leg steel bars, the lower ends of the leg steel bars are arranged at the intersections, and the upper ends of the leg steel bars are connected to the second longitudinal bars, forming a regular tetrahedron structure with each square of the mesh structure as the bottom surface.

[0011] Furthermore, a lapping plate is provided at the bottom of one side of the precast bottom plate, and a toothed plate is provided in the middle section of the other side of the precast bottom plate. The lapping plate and the toothed plate between two adjacent precast bottom plates are lapped to form a second cast-in-place groove; a second heat-insulating and sound-insulating board is installed above the second cast-in-place groove, and there is a gap between the second heat-insulating and sound-insulating board and the second cast-in-place groove for pouring cast-in-place concrete to strengthen the connection between two adjacent precast bottom plates.

[0012] Furthermore, a connector is installed inside the second cast-in-place groove. The connector includes a connecting frame fixed to the lower surface of the second heat-insulating and sound-insulating board. Both ends of the lower surface of the connecting frame are fixed with buffer sleeves. The buffer sleeves are sleeved on the connecting steel bars on two adjacent shear-resistant steel bar layers, and the gap between the buffer sleeves and the connecting steel bars is filled with a paraffin-based material.

[0013] Furthermore, load-bearing beams are provided at both ends of the prefabricated base plate, and reinforcing steel bars are provided inside the load-bearing beams. A step groove is provided on the load-bearing beam, and the step groove is overlapped with the base plate; a first cast-in-place groove is formed between the two prefabricated base plates and the load-bearing beams on the same side, and the first cast-in-place groove is used for injecting cast-in-place concrete to strengthen the connection between the prefabricated base plate and the load-bearing beam.

[0014] Furthermore, the thermal insulation layer and the panel layer are both cast by lightweight aggregate concrete, and polystyrene particles or rubber particles with low thermal conductivity are uniformly mixed in the casting process.

[0015] Furthermore, a protective frame is detachably installed on the outer side of the panel layer, and the protective frame is used to protect the corners of the panel layer during transportation.

[0016] The present invention has the following beneficial effects: (1) The prefabricated precast concrete thermal insulation and sound insulation floor slab is in contact with the thermal insulation layer board after the panel layer is poured, thereby increasing the contact area between the layers, improving the contact strength between the layers and forming a layer sandwich structure. This structure improves the traditional direct covering installation of the thermal insulation board, not only improving the connection strength between the structures, but also using the low thermal conductivity of the first thermal insulation and sound insulation board to block the thermal bridge effect, thereby greatly improving the thermal insulation and sound insulation effects.

[0017] (2) The prefabricated concrete thermal insulation and sound insulation floor slab increases the contact area between the floor slab and the cast-in-place concrete by setting the first thermal insulation and sound insulation board, and can also expand the thermal insulation and sound insulation range. The first thermal insulation and sound insulation board also has a skeleton function, providing skeleton support for the panel layer and the insulation layer board, thereby improving the structural strength of the floor slab. By setting the shear steel bar layer, the connection strength between the panel layer, the insulation layer board and the prefabricated bottom plate is strengthened, which greatly reduces the structural strength reduction caused by the plate layer.

[0018] (3) The prefabricated concrete thermal insulation and sound insulation floor slab forms a three-dimensional skeleton between the reinforcing steel bars in the beam and the first longitudinal bars and the second longitudinal bars, providing a structural foundation for the cast-in-place concrete in the first cast-in-place groove. The longitudinal and transverse structures are formed by connecting the steel bars and the connecting frames, thereby providing a skeleton support for the cast-in-place concrete in the second cast-in-place groove, thereby greatly reducing the on-site concrete work, improving environmental protection requirements, reducing the use of formwork and on-site brackets, and further improving construction efficiency.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 It is an exploded view of the first embodiment of the present invention; Figure 3 In the present invention Figure 1 is the front view; Figure 4 is the schematic diagram of the installation structure of the first embodiment of the present invention; Figure 5 is the schematic diagram of the internal structure during the installation process of the first embodiment of the present invention; Figure 6 In the present invention Figure 5 is the side view; Figure 7 In the present invention Figure 4 is the top view; Figure 8 is the schematic diagram of the connection structure between two adjacent precast floor slabs in the first embodiment of the present invention; Figure 9 In the present invention Figure 8 is the enlarged view of part A; Figure 10 In the first embodiment of the present invention Figure 8 is the partial side view; Figure 11 is the positional relationship diagram between the second heat preservation and sound insulation board and the connecting frame in the first embodiment of the present invention; Figure 12 is the schematic diagram of the structure of the second embodiment of the present invention; Figure 13 is the exploded view of the second embodiment of the present invention; Figure 14 In the present invention Figure 13 is the view from another perspective; Figure 15 is the schematic diagram of the internal structure of the second embodiment of the present invention.

[0021] In the figure, 1, precast floor slab; 2, overlapping plate; 3, toothed plate; 4, heat preservation layer board; 5, shear-resistant steel bar layer; 51, first longitudinal bar; 52, second longitudinal bar; 53, transverse bar; 54, leg bar; 55, connecting bar; 6, panel layer; 7, first heat preservation and sound insulation board; 8, protective frame; 9, load-bearing beam; 10, step groove; 11, first cast-in-place groove; 12, second cast-in-place groove; 13, second heat preservation and sound insulation board; 14, internal strengthening steel bar in the beam; 15, buffer sleeve; 16, connecting frame; 71, through groove; 72, third heat preservation and sound insulation board; 73, third longitudinal bar. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] The following will refer to Figure 1 - Figure 15 describe the prefabricated precast concrete thermal insulation and sound insulation floor provided by the present invention.

[0024] Embodiment 1 Please refer to Figure 1 - Figure 12 , the embodiment of the present invention provides a technical solution: a prefabricated precast concrete thermal insulation and sound insulation floor, including a precast bottom plate 1, a thermal insulation layer plate 4 is provided on one side of the precast bottom plate 1, a first thermal insulation and sound insulation plate 7 is provided on the thermal insulation layer plate 4, the first thermal insulation and sound insulation plates 7 are arranged side by side and at intervals, and are arranged in a state with an empty area, and the non-empty area of the first thermal insulation and sound insulation plate 7 is used for thermal insulation and sound insulation. It also includes a panel layer 6, the panel layer 6 is poured on the side of the precast bottom plate 1 close to the first thermal insulation and sound insulation plate 7, and the panel layer 6 can fill the empty area. Preferably, the first thermal insulation and sound insulation plate 7 is a polyurethane plate. It should be noted that the precast bottom plate 1, the thermal insulation layer plate 4 and the panel layer 6 involved in this solution are all precast structures, and they are integral structures when leaving the factory. In this solution, they are named because of their different materials and layers.

[0025] Among them, after the panel layer 6 is poured, it contacts the thermal insulation layer plate 4, thereby increasing the contact area between the layer plates, improving the contact strength between the layer plates and forming a layer plate sandwich structure. This structure improves the traditional direct covering installation of thermal insulation boards, not only improving the connection strength between structures, but also using the low thermal conductivity of the first thermal insulation and sound insulation plate 7 to change the flow path of heat flow between the panel layer 6 and the thermal insulation layer plate 4, so as to extend the heat flow path and maintain the temperature of the floor on the overall level, thereby greatly improving the thermal insulation and sound insulation effects. In addition, it should be noted that both the thermal insulation layer plate 4 and the panel layer 6 are poured with lightweight aggregate concrete, and can also be formed by pouring foamed concrete, and polystyrene particles or rubber particle low thermal conductivity materials are evenly doped during the pouring process. This kind of concrete material belongs to a common technical solution and is widely used in the existing technology, so that it has thermal insulation and sound insulation effects. A stable heat insulation layer is formed by the cooperation of the thermal insulation layer plate 4, the panel layer 6 and the first thermal insulation and sound insulation plate 7 to balance the structural strength and heat insulation requirements.

[0026] Such as Figure 2As shown in the figure, multiple groups of the first thermal insulation and sound insulation boards 7 provided in this embodiment are arranged side by side. There is an included angle between the first thermal insulation and sound insulation boards 7 and the precast bottom slab 1. There is an empty area between two adjacent groups of the first thermal insulation and sound insulation boards 7, and there is an overlapping area between two adjacent groups of the first thermal insulation and sound insulation boards 7 in the orthographic projection direction of the precast bottom slab 1. Preferably, reinforcing steel bars are provided inside the first thermal insulation and sound insulation boards 7, and the reinforcing steel bars are arranged along the axial direction of the first thermal insulation and sound insulation boards 7. It should be noted that the reinforcing steel bars are wrapped inside the first thermal insulation and sound insulation boards 7, and their outer surfaces can be provided with heat insulation coatings to improve the heat insulation ability to prevent heat energy loss. The structural strength of the first thermal insulation and sound insulation boards 7 is improved through the reinforcing steel bars, so that the first thermal insulation and sound insulation boards 7 have a certain supporting effect, and then the structural strength of the entire floor slab is improved. In addition, there is an overlapping area between two adjacent groups of the first thermal insulation and sound insulation boards 7 in the orthographic projection direction of the precast bottom slab 1 to achieve full coverage in the orthographic projection direction of the floor slab to improve the thermal insulation and sound insulation effects. Of course, sound and heat can also be conducted through the empty area, but due to the thermal insulation and sound insulation abilities of the thermal insulation layer board 4 and the panel layer 6, the diffusion effects of heat energy and sound will be further reduced, thereby assisting the empty area in thermal insulation and sound insulation.

[0027] As Figure 2 , Figure 4 and Figure 7 shown, in order to improve the connection strength between the precast bottom slab 1 and the thermal insulation layer board 4, a shear-resistant steel bar layer 5 is provided between the precast bottom slab 1 and the thermal insulation layer board 4.

[0028] The shear-resistant steel bar layer 5 includes first longitudinal steel bars 51, second longitudinal steel bars 52, transverse steel bars 53 and leg steel bars 54. The first longitudinal steel bars 51 are evenly arranged in the precast bottom slab 1, the second longitudinal steel bars 52 are evenly arranged in the thermal insulation layer board 4, and the orthographic projections of the second longitudinal steel bars 52 and the first longitudinal steel bars 51 in the vertical direction are arranged in a staggered manner, that is, the second longitudinal steel bars 52 are located between two adjacent first longitudinal steel bars 51.

[0029] In addition, the transverse steel bars 53 are arranged in the precast bottom slab 1, and the transverse steel bars 53 and the first longitudinal steel bars 51 have intersection points, so that the first longitudinal steel bars 51 and the transverse steel bars 53 are combined to form a mesh structure. Both ends of the transverse steel bars 53 are bent away from the direction of the precast bottom slab 1 to form connecting steel bars 55. The lower ends of the leg steel bars 54 are arranged at the intersection points, and the upper ends of the leg steel bars 54 are connected to the second longitudinal steel bars 52 to form a regular tetrahedron structure with each grid of the mesh structure as the bottom surface, thereby forming a stable steel bar cage structure, and the entire shear-resistant steel bar layer 5 penetrates through the precast bottom slab 1 and the thermal insulation layer board 4, thereby improving the connection strength between the thermal insulation layer board 4 and the precast bottom slab 1 to avoid a decrease in the connection strength due to different materials.

[0030] As Figure 3 , Figure 8 , Figure 9 and Figure 10As shown in the figure, a lap plate 2 is provided at the bottom of one side of the precast floor slab 1 provided in this embodiment, and a toothed plate 3 is provided in the middle section of the other side of the precast floor slab 1. The lap plate 2 and the toothed plate 3 between two adjacent precast floor slabs 1 are lapped to form a second cast-in-place groove 12. Preferably, the side of the lap plate 2 facing the toothed plate 3 is a bevel structure, so that the cast-in-place concrete can penetrate between the lap plate 2 and the toothed plate 3 to improve the connection stability between the lap plate 2 and the toothed plate 3. In addition, the maximum width of the toothed plate 3 is smaller than the width of the lap plate 2 to increase the contact area with the outside after the cast-in-place concrete is injected, thereby improving the connection strength between two adjacent floor slabs.

[0031] To prevent a large amount of heat loss at the second cast-in-place groove 12, a second thermal insulation and sound insulation board 13 is installed above the second cast-in-place groove 12, so as to avoid serious heat loss at the joint of the floor slab. And there is a gap between the second thermal insulation and sound insulation board 13 and the second cast-in-place groove 12 for injecting cast-in-place concrete to strengthen the connection between two adjacent precast floor slabs 1. After the cast-in-place concrete is injected into the gap, caulking treatment can be carried out to improve the sealing performance of the joint of the floor slab.

[0032] As Figure 8 - Figure 11 As shown in the figure, to further improve the connection strength between two adjacent floor slabs, connectors are installed inside the second cast-in-place groove 12 provided in this embodiment. The connectors include a connection frame 16 fixed to the lower surface of the second thermal insulation and sound insulation board 13. Buffer sleeves 15 are fixed at both ends of the lower surface of the connection frame 16. The buffer sleeves 15 are sleeved on the connection steel bars 55 on two adjacent shear-resistant steel bar layers 5. And the gap between the buffer sleeves 15 and the connection steel bars 55 is filled with a paraffin-based material. In this solution, the buffer sleeves 15 are of a flexible structure and the inner diameter is twice the outer diameter of the connection steel bars 55. The phase change heat absorption of the paraffin-based material reduces the temperature difference stress and enhances the interface density at the same time. The connection steel bars 55 and the connection frame 16 form a vertical and horizontal structure to provide a skeleton support for the cast-in-place concrete. In addition, in this solution, preferably, the width of the first thermal insulation and sound insulation board 7 is greater than the widths of the panel layer 6 and the thermal insulation board 4, so that both ends of the first thermal insulation and sound insulation board 7 extend into the second cast-in-place groove 12. Further, both ends of multiple groups of the first thermal insulation and sound insulation boards 7 form a toothed structure, which can not only increase the contact area with the cast-in-place concrete, but also expand the thermal insulation and sound insulation range.

[0033] As Figure 4 - Figure 7As shown in the figure, load-bearing beams 9 are provided at both ends of the precast floor slab 1 provided in this embodiment. The load-bearing beams 9 are provided with internal beam reinforcement bars 14, and a stepped groove 10 is provided on the load-bearing beams 9. The stepped groove 10 is lapped with the precast floor slab 1 to realize the connection between the floor slab and the load-bearing beam 9. Both ends of the first longitudinal reinforcement 51 and the second longitudinal reinforcement 52 extend to the load-bearing beam 9 and are connected to the internal beam reinforcement bars 14 through connecting members such as external steel wires, so as to form a three-dimensional skeleton between the internal beam reinforcement bars 14 and the first longitudinal reinforcement 51 and the second longitudinal reinforcement 52, providing a structural foundation for the subsequent cast-in-place concrete.

[0034] Among them, a first cast-in-place groove 11 is formed between two precast floor slabs 1 and the load-bearing beam 9 on the same side. The first cast-in-place groove 11 is used for injecting cast-in-place concrete to strengthen the connection between the precast floor slab 1 and the load-bearing beam 9. In this structure, the cast-in-place concrete only needs to perform the wet operation of the first cast-in-place groove 11 and the second cast-in-place groove 12, greatly reducing the on-site concrete preparation scenario, that is, improving the environmental protection effect and being beneficial to accelerating the construction period. In this solution, the lengths of the optional panel layer 6 and the insulation layer board 4 are greater than the length of the precast floor slab 1, so that one end of the panel layer 6 and the insulation layer board 4 can extend into the first cast-in-place groove 11, thereby increasing the contact area between the cast-in-place concrete and the panel layer 6 and the insulation layer board 4, realizing a stepped contact to improve the contact stability.

[0035] As Figure 2 、 Figure 4 and Figure 7 shown in the figure, a protective frame 8 is detachably installed on the outside of the panel layer 6. The protective frame 8 is used for protecting the corners of the panel layer 6 during transportation. Since the length and width specifications of the panel layer 6 will be slightly smaller than those of the insulation layer board 4 after the protective frame 8 is removed, gaps will appear between the panel layer 6 and the first cast-in-place groove 11 and the second cast-in-place groove 12 after removal, facilitating the injection of concrete or glue and improving the connection effect at the first cast-in-place groove 11 and the second cast-in-place groove 12.

[0036] During use (operation), after positioning the floor slab at the designated position, lap the connecting plate 2 and the toothed plate 3 between two adjacent precast floor slabs 1, connect the adjacent two connecting steel bars 55 through connecting members, and install the second thermal insulation and sound insulation board 13 at the second cast-in-place groove 12. Then, inject cast-in-place concrete at the first cast-in-place groove 11 and the second cast-in-place groove 12 to realize the connection between the floor slabs and between the floor slab and the load-bearing beam 9. A three-dimensional skeleton is formed between the internal beam reinforcement bars 14 and the first longitudinal reinforcement 51 and the second longitudinal reinforcement 52, providing a structural foundation for the cast-in-place concrete inside the first cast-in-place groove 11. A vertical and horizontal structure is formed through the connecting steel bars 55 and the connecting frame 16, thereby providing a skeleton support for the cast-in-place concrete inside the second cast-in-place groove 12, and then greatly reducing the on-site concrete operation and meeting the environmental protection requirements.

[0037] After the panel layer 6 is poured, it contacts the insulation layer board 4, thereby increasing the contact area between the boards, improving the contact strength between the boards, and forming a sandwich structure of the boards. This structure improves the traditional direct covering installation of the insulation board, not only improving the connection strength between the structures, but also using the low thermal conductivity of the first thermal insulation and sound insulation board 7 to block the thermal bridge effect, thereby greatly improving the thermal insulation and sound insulation effects.

[0038] Embodiment 2 Please refer to Figure 12 - Figure 15 , the embodiment of the present invention provides a technical solution, the difference from Embodiment 1 is that: As Figure 12 - Figure 15 shown, the first thermal insulation and sound insulation board 7 provided in this embodiment includes a through groove 71, the through groove 71 is opened on the insulation layer board 4, and the area where the through groove 71 is located is the first empty area.

[0039] The first thermal insulation and sound insulation board 7 provided in this embodiment further includes a third thermal insulation and sound insulation board 72. The third thermal insulation and sound insulation board 72 is a cut into a block structure, and the third thermal insulation and sound insulation board 72 is arranged on the side of the through groove 71 close to the panel layer 6. The third thermal insulation and sound insulation board 72 does not contact the through groove 71, and the third thermal insulation and sound insulation boards 72 are connected by third longitudinal bars 73. The area where the third longitudinal bars 73 are located is the second empty area. Preferably, a fourth thermal insulation and sound insulation board corresponding to the third thermal insulation and sound insulation board 72 is provided on the insulation layer board 4, so that the third thermal insulation and sound insulation board 72 and the fourth thermal insulation and sound insulation board cooperate to completely cover the insulation layer board 4, thereby improving the thermal insulation and sound insulation effects. Among them, the shape of the through groove 71 corresponds to the shape of the third thermal insulation and sound insulation board 72, but is not limited to a square structure, and can also be a circular, elliptical, polygonal and other structures. Preferably, the surface of the third longitudinal bar 73 is treated with a heat insulation coating to reduce heat flow loss. It should be noted that the third longitudinal bar 73 does not contact the shear-resistant steel bar layer 5. Its significance lies in that the height of the third thermal insulation and sound insulation board 72 can be increased through the third longitudinal bar 73, so that a gap is left between the third thermal insulation and sound insulation board 72 and the through groove 71, so that concrete can flow into the inside of the through groove 71 through the gap during pouring. In addition, the third longitudinal bar 73 can strengthen the overall structural strength of the panel layer 6.

[0040] In this solution, when the panel layer 6 is being poured, the concrete flows into the second empty area and the first empty area and fills them, thereby increasing the contact area between the panel layer 6 and the insulation layer board 4. Additionally, the concrete in the first empty area may come into contact with the shear-resistant steel bar layer 5, which can further stabilize the connection between the panel layer 6, the insulation layer board 4, and the precast floor slab 1. It should be noted that since the panel layer 6 and the insulation layer board 4 themselves have heat insulation functions, after they come into contact with the shear-resistant steel bar layer 5, their heat conduction ability is poor and heat energy loss will not occur. A further solution is to spray a heat insulation coating on the contact parts between the outer surface of the shear-resistant steel bar layer 5 and the panel layer 6 and the insulation layer board 4 to enhance the heat insulation effect. Additionally, through the cooperation of the third heat insulation and sound insulation board 72 and the fourth heat insulation and sound insulation board, the positive projection of the insulation layer board 4 in the vertical direction is fully covered to improve the heat insulation and sound insulation effect. Finally, through the setting of the third longitudinal bar 73, the connection of the third heat insulation and sound insulation board 72 can be achieved, and the structural strength of the entire floor slab can be improved, thereby enhancing the load-bearing effect of the floor slab.

[0041] As Figure 13 shown, to further improve the heat insulation and sound insulation effect, the size of the third heat insulation and sound insulation board 72 provided in this embodiment is larger than the size of the through groove 71, so that there is an overlapping part in the positive projection direction between the third heat insulation and sound insulation board 72 and the insulation layer board 4. In addition, in this solution, it is preferred that both ends of the third longitudinal bar 73 are connected to the protective frame 8, and the connection method is clearance fit to facilitate the later disassembly of the protective frame 8.

[0042] During use (operation), when the panel layer 6 is being poured, the concrete flows into the second empty area and the first empty area and fills them, thereby increasing the contact area between the panel layer 6 and the insulation layer board 4. Additionally, the concrete in the first empty area may come into contact with the shear-resistant steel bar layer 5, which can further stabilize the connection between the panel layer 6, the insulation layer board 4, and the precast floor slab 1. Additionally, through the cooperation of the third heat insulation and sound insulation board 72 and the fourth heat insulation and sound insulation board, the positive projection of the insulation layer board 4 in the vertical direction is fully covered to improve the heat insulation and sound insulation effect. Finally, through the setting of the third longitudinal bar 73, the connection of the third heat insulation and sound insulation board 72 can be achieved, and the structural strength of the entire floor slab can be improved, thereby enhancing the load-bearing effect of the floor slab.

[0043] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. Assembled prefabricated concrete thermal insulation and sound insulation floor, characterized in that: include: A prefabricated bottom plate (1), wherein a surface of the prefabricated bottom plate (1) is provided with a thermal insulation layer plate (4), a first thermal insulation and sound insulation plate (7) is provided on the thermal insulation layer plate (4), the first thermal insulation and sound insulation plate (7) is arranged in a state with an empty area, and the non-empty area of ​​the first thermal insulation and sound insulation plate (7) is used for thermal insulation and sound insulation; A panel layer (6), wherein the panel layer (6) is cast on a side of the prefabricated bottom plate (1) close to the first thermal insulation and sound insulation board (7), and the panel layer (6) is capable of filling the empty area.

2. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 1 is characterized in that: The first thermal insulation and sound insulation panels (7) are provided in a plurality of groups, the plurality of groups of first thermal insulation and sound insulation panels (7) are arranged side by side, and an angle is formed between the first thermal insulation and sound insulation panels (7) and the prefabricated bottom plate (1), an empty area is formed between two adjacent groups of first thermal insulation and sound insulation panels (7), and the two adjacent groups of first thermal insulation and sound insulation panels (7) have an overlapping area in the direction of the orthographic projection of the prefabricated bottom plate (1).

3. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 1 is characterized in that: The first thermal insulation and sound insulation board (7) comprises: A through groove (71), wherein the through groove (71) is formed on the thermal insulation layer plate (4), and the area where the through groove (71) is located is empty area 1; A third thermal insulation and sound insulation board (72), wherein the third thermal insulation and sound insulation board (72) is a structure cut into a block shape, and the third thermal insulation and sound insulation board (72) is arranged on a side of the through groove (71) close to the panel layer (6), the third thermal insulation and sound insulation board (72) is not in contact with the through groove (71), and the third thermal insulation and sound insulation boards (72) are connected by third longitudinal ribs (73), and the area where the third longitudinal ribs (73) are located is the second empty area.

4. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 3 is characterized by: The size of the third thermal insulation and sound insulation board (72) is larger than the size of the through groove (71), so that the non-empty area between the third thermal insulation and sound insulation board (72) and the thermal insulation layer board (4) has an overlapping portion in the orthographic projection direction.

5. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to any one of claims 2 or 4, characterized in that: A shear-resistant steel reinforcement layer (5) is provided between the prefabricated bottom plate (1) and the thermal insulation layer plate (4), and the shear-resistant steel reinforcement layer (5) comprises: First longitudinal ribs (51), the first longitudinal ribs (51) being evenly arranged in the prefabricated bottom plate (1); Second longitudinal ribs (52), the second longitudinal ribs (52) being evenly arranged in the thermal insulation layer plate (4), and the orthographic projections of the second longitudinal ribs (52) and the first longitudinal ribs (51) in the vertical direction being arranged in a staggered manner; transverse reinforcement (53), the transverse reinforcement (53) being arranged in the prefabricated bottom plate (1), and the transverse reinforcement (53) and the first longitudinal reinforcement (51) having an intersection, so that the first longitudinal reinforcement (51) and the transverse reinforcement (53) are combined to form a mesh structure, and the two ends of the transverse reinforcement (53) are bent in a direction away from the prefabricated bottom plate (1) to form a connecting reinforcement (55); The leg reinforcement bars (54) have lower ends disposed at the intersections, and upper ends of the leg reinforcement bars (54) are connected to the second longitudinal reinforcement bars (52), forming a regular tetrahedron structure with each square of the mesh structure as the bottom surface.

6. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 5 is characterized by: A strap plate (2) is provided at the bottom of one side of the prefabricated bottom plate (1), and a toothed plate (3) is provided in the middle of the other side of the prefabricated bottom plate (1); the strap plate (2) between two adjacent prefabricated bottom plates (1) overlaps the toothed plate (3) to form a second cast-in-place groove (12); A second heat-insulating and sound-isolating board (13) is installed above the second cast-in-place groove (12), and a gap is left between the second heat-insulating and sound-isolating board (13) and the second cast-in-place groove (12) for injecting cast-in-place concrete, so as to strengthen the connection between two adjacent prefabricated bottom plates (1).

7. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 6 is characterized in that: A connecting piece is installed inside the second cast-in-place groove (12), the connecting piece comprising a connecting frame (16) fixed to the lower surface of the second thermal insulation and sound insulation board (13), buffer sleeves (15) are fixed at both ends of the lower surface of the connecting frame (16), the buffer sleeves (15) are sleeved with the connecting steel bars (55) on two adjacent shear steel bar layers (5), and the gap between the buffer sleeves (15) and the connecting steel bars (55) is filled with a paraffin-based material.

8. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 7 is characterized in that: The prefabricated bottom plate (1) is provided with load-bearing beams (9) at both ends, the load-bearing beams (9) are provided with internal beam reinforcing steel bars (14), and the load-bearing beams (9) are provided with step grooves (10), and the step grooves (10) overlap the bottom plate (1); A first cast-in-place groove (11) is formed between the two prefabricated bottom plates (1) and the load-bearing beam (9) on the same side, and the first cast-in-place groove (11) is used for injecting cast-in-place concrete to strengthen the connection between the prefabricated bottom plates (1) and the load-bearing beam (9).

9. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 8, characterized in that: The thermal insulation layer plate (4) and the panel layer (6) are both cast from lightweight aggregate concrete, and polystyrene particles or rubber particles with low thermal conductivity are uniformly mixed during the casting process.

10. The assembled prefabricated concrete thermal insulation and sound insulation floor slab according to claim 9, characterized in that: A protective frame (8) is detachably mounted on the outer side of the panel layer (6), and the protective frame (8) is used to protect the corners of the panel layer (6) during transportation.

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