An assembled formwork with non-removable thermal insulation and steel bar cage floor slab

Abstract

The present invention relates to the field of assembled floor bearing plates, and specifically discloses an assembled floor bearing plate with a non-removable thermal insulation bottom formwork and a steel reinforcement cage, which includes a thermal insulation bottom formwork. A plurality of connecting parts for connecting prefabricated steel reinforcement cages are arranged on the top of the thermal insulation bottom formwork. A thermal insulation core layer is provided inside the thermal insulation bottom formwork. A first cavity with an adjustable cavity volume and a second cavity communicated with the first cavity are arranged inside the thermal insulation core layer. The first cavity is located above the second cavity, and the volume of the second cavity is larger than that of the first cavity. The first cavity and the second cavity form a sound absorption resonance structure, and the sound absorption resonance structures are arranged in the thermal insulation core layer in an array. The bottom formwork of the present invention integrates the functions of thermal insulation, sound insulation, flame retardancy and formwork, reduces the construction processes of secondary thermal insulation and sound insulation and the formwork removal process, and improves the construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated floor bearing plates, and particularly to a prefabricated floor bearing plate with a non-removable thermal insulation bottom formwork and a steel bar cage Background Art

[0002] The construction technologies of prefabricated floor slabs include concrete composite slab technology, steel bearing plate bottom formwork floor bearing plate technology with steel bar trusses, calcium silicate board non-removable formwork floor bearing plate with steel bar trusses, hollow floor slab technology, etc.

[0003] Currently, due to various reasons, it is necessary to formwork the bottom of the prefabricated floor bearing plate, and then remove the formwork after pouring concrete, resulting in low construction efficiency. In addition, the thermal insulation and sound insulation performance between floors is poor, and it is also necessary to separately set up a thermal insulation structure for secondary thermal insulation, which is time-consuming and laborious. Summary of the Invention

[0004] The purpose of the present invention is to provide a prefabricated floor bearing plate with a non-removable thermal insulation bottom formwork and a steel bar cage. The bottom formwork integrates the functions of thermal insulation, sound insulation, flame retardancy and formwork, reducing the construction processes of secondary thermal insulation, sound insulation and formwork removal, and improving the construction efficiency.

[0005] To solve the above technical problems, the present invention adopts the following solutions:

[0006] A prefabricated floor bearing plate with a non-removable thermal insulation bottom formwork and a steel bar cage includes a thermal insulation bottom formwork. A plurality of connecting parts for connecting prefabricated steel bar cages are arranged on the top of the thermal insulation bottom formwork. A thermal insulation core layer is arranged inside the thermal insulation bottom formwork. A first cavity with an adjustable cavity volume and a second cavity communicated with the first cavity are arranged inside the thermal insulation core layer. The first cavity is located above the second cavity, and the volume of the second cavity is larger than that of the first cavity. The first cavity and the second cavity form a sound absorption resonance structure, and the sound absorption resonance structures are arranged in an array in the thermal insulation core layer.

[0007] In the prior art, after the floor bearing plate is transported to the site, a bottom formwork for placing the floor bearing plate needs to be arranged on its bottom surface, and then a large number of support rods are arranged below the bottom formwork. Then, steel bars are tied on the floor bearing plate, and finally, concrete is poured. After the concrete solidifies, secondary thermal insulation, sound insulation, flame retardancy and other construction processes are carried out on the floor bearing plate. After all are completed, the formwork support system is removed.

[0008] In this solution, prefabricated means that the floor decking can be prefabricated in the factory and then quickly assembled at the construction site, which improves construction efficiency and reduces on-site wet work. Dismantling-free means that the insulation bottom formwork does not need to be dismantled after installation, which simplifies the construction process and saves material costs. The thermal insulation bottom formwork serves as the base layer of the floor decking, providing good thermal insulation performance and helping to maintain stable indoor temperature. The steel truss enhances the bearing capacity of the floor decking so that it can meet the requirements of structural safety. The connecting part is used to connect the prefabricated steel cage, ensuring a firm connection between the floor decking and the steel cage, and improving the stability and seismic resistance of the overall structure. The thermal insulation core layer is the main part of the thermal insulation bottom formwork, and a cavity structure is designed inside it. The first cavity is located above the second cavity, and the volume of the second cavity is larger than that of the first cavity. This design not only increases the total volume of the cavity and improves the thermal insulation performance, but also forms a sound-absorbing resonance structure. The sound-absorbing resonance structure is composed of the first cavity and the second cavity, and they are connected. When sound waves are transmitted, a resonance effect will be generated inside the cavity, thereby consuming sound energy and achieving the effect of sound absorption and noise reduction. This sound-absorbing resonance structure is distributed in an array in the thermal insulation core layer, ensuring that the floor decking has good acoustic performance while providing thermal insulation performance.

[0009] In summary, the design of this assembled, non-dismantled insulated bottom formwork steel cage floor decking fully considers multiple aspects such as thermal insulation, structural safety, construction efficiency and acoustic performance. The bottom formwork integrates insulation, sound insulation, flame retardancy and formwork functions, reduces secondary insulation, sound insulation and other construction processes and formwork removal processes, improves construction efficiency, and is a new type of building material with broad application prospects.

[0010] Optionally, an adjusting portion for adjusting the volume of the first cavity is provided in the first cavity.

[0011] Optionally, the adjusting part is an airbag adapted to the shape of the first cavity, the airbag is connected to a pre-buried pipe in the thermal insulation bottom mold, and the pre-buried pipe is connected to an external inflation device.

[0012] Optionally, a composite damping layer is provided on the inner wall of the second cavity, and the composite damping layer is butyl rubber.

[0013] Optionally, a sound-absorbing filler is provided in the second cavity, and the sound-absorbing filler is glass wool.

[0014] Optionally, a resonance sensor for real-time monitoring of noise frequency is embedded in the side wall of the first cavity. The resonance sensor is connected to an external controller, and the controller adjusts the start and stop of the inflatable device in real time according to data fed back by the resonance sensor.

[0015] Optionally, the thermal insulation core layer is made of non-combustible polystyrene cement, and a keel frame is embedded in the thermal insulation core layer.

[0016] Optionally, a cement mortar layer with alkali-resistant fiberglass mesh is provided on the top and bottom surfaces of the thermal insulation core layer.

[0017] Optionally, a 3-5 mm thick water-based damping sound insulation material is sprayed on the surface of the cement mortar layer on the top surface of the thermal insulation core layer.

[0018] Optionally, a U-shaped card slot is provided on the side wall of the connecting part, and the lower steel bars of the prefabricated steel reinforcement cage are placed in the card slot. The connecting part is connected to the thermal insulation bottom form by screws. The screws pass through the connecting part from top to bottom to connect with the thermal insulation bottom form, and the lower steel bars of the prefabricated steel reinforcement cage are restricted in the card slot.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. In the present invention, the bottom form integrates the functions of thermal insulation, sound insulation, flame retardancy and formwork, reducing the secondary thermal insulation and sound insulation construction processes and formwork removal processes, improving the construction efficiency, and the steel reinforcement cage is prefabricated and formed in advance, reducing the construction time.

[0021] 2. After the floor slab is installed in place, concrete is poured on site. The bottom form is integrally cast with the concrete without cavities on site, avoiding the quality and safety problems such as shedding, cracking, hollowing and water seepage of the traditional thermal insulation system.

[0022] 3. Compared with the composite floor slab and the floor slab adopting other thermal insulation methods, the thickness of the floor slab is reduced and the floor-to-floor height is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a schematic structural diagram of the sound absorption resonance structure in the thermal insulation core layer;

[0025] Figure 3 is a schematic structural diagram after the sound absorption filler is filled in the second cavity;

[0026] Figure 4 is a three-dimensional structure diagram of the connecting part;

[0027] Figure 5 is a connection schematic diagram of the connecting part and the thermal insulation bottom form.

[0028] Reference numerals: 1 - thermal insulation bottom form, 2 - steel mesh, 3 - connecting part, 4 - steel bar truss, 5 - cement mortar layer, 6 - water-based damping sound insulation material, 7 - airbag, 8 - first cavity, 9 - sound absorption filler, 10 - composite damping layer, 11 - lower steel bar, 12 - thermal insulation core layer, 13 - second cavity, 14 - card slot, 15 - hole, 16 - screw. DETAILED DESCRIPTION OF THE INVENTION

[0029] The present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings, but the implementation manners of the present invention are not limited thereto.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "provided with", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] An assembled non-detachable thermal insulation bottom formwork steel bar cage floor slab, comprising a thermal insulation bottom formwork 1. A plurality of connection parts 3 for connecting prefabricated steel bar cages are arranged on the top of the thermal insulation bottom formwork 1. A thermal insulation core layer 12 is provided inside the thermal insulation bottom formwork 1. A first cavity 8 with an adjustable cavity volume and a second cavity 13 communicating with the first cavity 8 are arranged inside the thermal insulation core layer 12. The first cavity 8 is located above the second cavity 13. The volume of the second cavity 13 is larger than the volume of the first cavity 8. The first cavity 8 and the second cavity 13 form a sound absorption resonance structure, and the sound absorption resonance structures are arrayed inside the thermal insulation core layer 12.

[0033] In this embodiment, as Figure 1As shown, the prefabricated type means that the floor formwork can be prefabricated in the factory and then quickly assembled at the construction site, which improves the construction efficiency, reduces the on-site wet work, and the non-removable type means that the thermal insulation bottom form 1 does not need to be removed after installation, which simplifies the construction process and saves material costs at the same time. The thermal insulation bottom form 1, as the basic layer of the floor formwork, provides good thermal insulation performance and helps to maintain a stable indoor temperature. The prefabricated steel bar cage includes a steel bar truss 4 and a steel bar mesh 2. The steel bar mesh 2 is divided into an upper layer and a lower layer. The steel bar truss 4 enhances the load-bearing capacity of the floor formwork, enabling it to meet the requirements of structural safety. The connecting part 3 is used to connect the steel bar mesh 2 in the lower layer of the prefabricated steel bar cage, ensuring a firm connection between the floor formwork and the prefabricated steel bar cage, improving the stability and seismic performance of the overall structure. The prefabricated steel bar cage is prefabricated in the factory, reducing the on-site construction time. The thermal insulation core layer 12 is the main part of the thermal insulation bottom form 1. As Figure 2 shown, it is internally designed with a cavity structure. The first cavity 8 is located above the second cavity 13, and the volume of the second cavity 13 is larger than that of the first cavity 8. This design not only increases the total volume of the cavities, improves the thermal insulation performance, but also forms a sound-absorbing resonance structure. The sound-absorbing resonance structure is jointly composed of the first cavity 8 and the second cavity 13, and they are connected. When sound waves enter, a resonance effect will be generated inside the cavities, thereby consuming sound energy and achieving the effect of sound absorption and noise reduction. This sound-absorbing resonance structure is distributed in an array within the thermal insulation core layer 12, ensuring that the floor formwork has good acoustic performance while providing thermal insulation performance.

[0034] In this embodiment, multiple aspects such as thermal insulation, structural safety, construction efficiency, and acoustic performance are fully considered. The bottom form integrates the functions of thermal insulation, sound insulation, fire retardancy, and formwork, reducing secondary construction processes such as thermal insulation and sound insulation and formwork removal processes, improving the construction efficiency, and is a new type of building material with broad application prospects.

[0035] Furthermore, an adjusting part is provided in the first cavity 8 for adjusting the volume of the first cavity 8.

[0036] Furthermore, the adjusting part is an airbag 7 adapted to the shape of the first cavity 8. The airbag 7 is connected to a buried pipeline in the thermal insulation bottom form 1, and the buried pipeline is connected to an external inflation device.

[0037] Specifically, as Figure 2As shown in the figure, the adjusting part is an airbag 7 adapted to the shape inside the first cavity 8. The airbag 7 is located inside the first cavity 8 and can be inflated and deflated as needed, so as to adjust the volume of the first cavity 8. This design enables the heat insulation and sound insulation performance and acoustic performance of the heat insulation bottom mold 1 to be dynamically adjusted according to actual needs. The airbag 7 is connected to an external inflation device through a pre-buried pipeline (not marked in the figure). The inflation device is an automatic air pump (not marked in the figure) for inflating the airbag 7 or extracting the gas inside the airbag 7, ensuring that the inflation and deflation operations of the airbag 7 are simple and fast. By adjusting the inflation and deflation state of the airbag 7, the volume of the first cavity 8 can be dynamically adjusted, thereby changing the heat insulation and sound insulation performance and acoustic performance of the heat insulation bottom mold 1. This design enables the floor bearing plate to better adapt to different environments and usage requirements. By adjusting the inflation and deflation state of the airbag 7, the overall structure of the floor bearing plate can also be finely adjusted, thereby improving its stability and load-bearing capacity. This design makes the floor bearing plate more flexible and reliable when dealing with different load and deformation requirements.

[0038] Furthermore, a composite damping layer 10 is provided on the inner wall of the second cavity 13, and the composite damping layer 10 is butyl rubber.

[0039] Furthermore, sound-absorbing filler 9 is provided inside the second cavity 13, and the sound-absorbing filler 9 is glass wool.

[0040] Specifically, as Figure 3 shown, a composite damping layer 10 is provided on the inner wall of the second cavity 13. The damping layer uses butyl rubber as the main material. Butyl rubber has excellent damping performance and sealing performance, can effectively absorb and isolate sound waves, and improve the acoustic performance of the floor bearing plate. The composite damping layer 10 can reduce the reflection and propagation of sound waves inside the second cavity 13, thereby reducing the noise transmission efficiency. At the same time, the sealing performance of butyl rubber can also prevent external air and moisture from entering the second cavity 13 and keep its interior dry and clean. Sound-absorbing filler 9 is provided inside the second cavity 13. The filler uses glass wool as the main material, or it can also be polyester fiber. Glass wool is a porous sound-absorbing material with good sound-absorbing performance and heat insulation performance. The sound-absorbing filler 9 can absorb the sound wave energy entering the first cavity 8 and convert it into other forms of energy such as heat energy, thereby reducing the reflection and propagation of noise. At the same time, the heat insulation performance of glass wool can also improve the heat insulation and sound insulation effect of the floor bearing plate and reduce energy loss.

[0041] Furthermore, a resonance sensor for real-time monitoring of the noise frequency is embedded in the side wall of the first cavity 8. The resonance sensor is connected to an external controller, and the controller adjusts the start and stop of the inflation device in real time according to the data fed back by the resonance sensor.

[0042] Specifically, a resonance sensor (not shown in the figure) is embedded in the side wall of the first cavity 8 for real-time monitoring of the noise frequency transmitted through the floor deck. This sensor can sense acoustic vibrations within a specific frequency range and convert them into electrical signals for transmission. The resonance sensor is made of advanced piezoelectric materials or micro-electromechanical systems (MEMS) technology, featuring high sensitivity, low power consumption, and long-term stability. It can accurately capture acoustic signals, providing a reliable basis for subsequent data processing and analysis. The resonance sensor is connected to an external controller via wired or wireless means. The controller is responsible for receiving the real-time data fed back by the resonance sensor and analyzing and processing this data according to preset algorithms or models. Based on the noise frequency monitored by the resonance sensor, the controller (not shown in the figure) can determine in real time whether to adjust the inflation and deflation state of the airbag 7 in the first cavity 8. When the noise frequency exceeds the preset threshold, the controller will trigger the inflation device to start, increasing the gas pressure in the airbag 7, thereby changing the volume and acoustic performance of the first cavity 8; conversely, when the noise frequency decreases, the controller will instruct the inflation device to stop inflating or perform a deflation operation.

[0043] By introducing the linkage mechanism of the resonance sensor and the controller, the floor deck realizes intelligent monitoring and dynamic adjustment of the noise frequency. This design not only improves the acoustic performance of the floor deck but also enables it to adaptively adjust according to environmental changes, providing a more comfortable and quiet living environment for users.

[0044] The intelligent adjustment mechanism helps reduce unnecessary energy consumption and noise pollution. When the external noise level is low, the floor deck will automatically adjust to a lower acoustic performance state, thus saving energy consumption; while when the noise level rises, it can quickly respond and improve the acoustic performance, effectively isolating noise interference.

[0045] In this embodiment, due to its unique acoustic performance and intelligent adjustment function, it has broad application prospects in high-rise buildings, schools, hospitals, libraries, and other places that require high acoustic quality. It can not only meet the high requirements of users for the acoustic environment but also improve the overall quality and comfort of the building.

[0046] Furthermore, the heat-insulating core layer 12 is composed of non-combustible polystyrene cement, and a keel frame is embedded in the heat-insulating core layer 12.

[0047] Furthermore, a cement mortar layer 5 with alkali-resistant fiberglass mesh is provided on the top and bottom surfaces of the heat-insulating core layer 12.

[0048] Specifically, the heat-insulating core layer 12 is made of non-combustible polystyrene cement as the core material, and the outer side is a cement mortar layer 5 with an alkali-resistant fiberglass mesh cloth embedded therein. Its thermal conductivity is ≤0.06 W / (m·K), the flexural strength is ≥5 MPa, and the elastic modulus is ≥10 GPa. The bottom formwork integrates the functions of heat insulation, flame retardancy, and formwork, reducing the secondary heat insulation construction process and the formwork erection and removal processes, and improving the construction efficiency.

[0049] Further, a water-based damping sound insulation material 6 with a thickness of 3-5 mm is sprayed on the surface of the cement mortar layer 5 on the top surface of the heat-insulating core layer 12.

[0050] Specifically, as Figure 2 shown, after the floor bearing plate is installed in place, concrete is poured on site. After the concrete is poured, the bottom formwork is not removed, and the formwork and the concrete are cast integrally without cavities on site. After the concrete is finally set, a 3-mm water-based damping sound insulation material 6 is sprayed on the surface. The construction is convenient, and compared with other sound insulation materials, it will not increase the thickness of the floor slab.

[0051] Further, a U-shaped card slot 14 is provided on the side wall of the connecting part 3. The lower steel bars 11 of the prefabricated steel reinforcement cage are placed in the card slot 14. The connecting part 3 is connected to the heat-insulating bottom formwork 1 by screws 16. The screws 16 pass through the connecting part 3 from top to bottom and are connected to the heat-insulating bottom formwork 1, and the lower steel bars 11 of the prefabricated steel reinforcement cage are restricted in the card slot 14.

[0052] Specifically, as Figure 4 and Figure 5 shown, a U-shaped card slot 14 is provided on the side wall of the connecting part 3, and a through hole 15 passes vertically through the card slot 14 and the connecting part 3. The lower steel bars 11 are clamped into the card slot 14. The lower steel bars 11 refer to the transverse or longitudinal steel bars in the lower steel bar mesh 2. The screws 16 pass through the holes 15 and are anchored into the heat-insulating bottom formwork 1. The lower thickness of the connecting part 3 is 15 mm, which just serves as the protective layer thickness. The connecting part 3 can not only fix the steel reinforcement cage on the heat-insulating bottom formwork 1, but also serve as a protective layer spacer block.

[0053] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. According to the technical essence of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments within the spirit and principle of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An assembled formwork-retaining thermal insulation bottom formwork steel bar cage floor slab, characterized in that It includes a heat-insulating bottom mold (1). Multiple connecting parts (3) for connecting precast steel reinforcement cages are provided at the top of the heat-insulating bottom mold (1). A heat-insulating core layer (12) is provided inside the heat-insulating bottom mold (1). A first cavity (8) with an adjustable cavity volume and a second cavity (13) connected to the first cavity (8) are provided inside the heat-insulating core layer (12). The first cavity (8) is located above the second cavity (13), and the volume of the second cavity (13) is larger than that of the first cavity (8). The first cavity (8) and the second cavity (13) form a sound-absorbing resonance structure, and the sound-absorbing resonance structures are arrayed inside the heat-insulating core layer (12). An adjusting part is provided inside the first cavity (8) for adjusting the volume of the first cavity (8). The adjusting part is an airbag (7) adapted to the shape of the first cavity (8). The airbag (7) is connected to a pre-embedded pipeline inside the heat-insulating bottom mold (1), and the pre-embedded pipeline is connected to an external inflation device.

2. The prefabricated and non-dismantled thermal insulation bottom formwork steel bar cage floor slab according to claim 1, wherein A composite damping layer (10) is provided on the inner wall of the second cavity (13), and the composite damping layer (10) is butyl rubber.

3. The prefabricated and non-removable thermal insulation bottom formwork steel bar cage floor slab according to claim 1, characterized in that, Sound-absorbing filler (9) is provided inside the second cavity (13), and the sound-absorbing filler (9) is glass wool.

4. The prefabricated non-removable thermal insulation bottom formwork steel bar cage floor slab according to claim 1, characterized in that, A resonance sensor for real-time monitoring of the noise frequency is embedded in the side wall of the first cavity (8). The resonance sensor is connected to an external controller, and the controller adjusts the start and stop of the inflation device in real time according to the data fed back by the resonance sensor.

5. A prefabricated formwork for a building floor slab with integral insulation and a steel bar cage, which is not to be removed during construction, as claimed in claim 1, wherein, The heat-insulating core layer (12) is composed of non-combustible polystyrene cement, and a dragon skeleton is embedded inside the heat-insulating core layer (12).

6. The prefabricated non-removable thermal insulation bottom formwork steel bar cage floor slab according to claim 5, characterized in that, Mortar layers (5) with alkali-resistant fiberglass meshes are provided on the top and bottom surfaces of the heat-insulating core layer (12).

7. The prefabricated and non-removable heat-insulating bottom formwork steel bar cage floor slab according to claim 6, characterized in that, A water-based damping sound insulation material (6) with a thickness of 3 - 5 mm is sprayed on the surface of the mortar layer (5) on the top surface of the heat-insulating core layer (12).

8. A prefabricated formwork and steel bar cage floor slab with insulation that does not require demolition according to claim 1, characterized in that, A U-shaped card slot (14) is provided on the side wall of the connecting part (3). The lower steel bars (11) of the precast steel reinforcement cage are placed inside the card slot (14). The connecting part (3) is connected to the heat-insulating bottom mold (1) by screws (16). The screws (16) pass through the connecting part (3) from top to bottom and are connected to the heat-insulating bottom mold (1), and the lower steel bars (11) of the precast steel reinforcement cage are restricted inside the card slot (14).

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