A new type of sound insulation prefabricated floor

Abstract

The utility model discloses a novel sound insulation prefabricated floor relates to building construction technical field. Including from top to bottom setting waterproof layer, concrete prefabricated slab and sound insulation mechanism in proper order, be provided with horizontal reinforcing rib and longitudinal reinforcing rib in the concrete prefabricated slab, horizontal reinforcing rib and longitudinal reinforcing rib, one side fixedly connected with connecting rod and with sound insulation mechanism fixedly connected. The utility model discloses the setting of sound insulation mechanism, in the use process, when the sound propagation, first sound spreads to the sound insulation board, under the action of longitudinal sound insulation strip and horizontal sound insulation strip, the vibration energy of sound is converted into heat energy and is consumed, simultaneously, the sound attenuation block in the sound attenuation groove formed by the enclosure of sound insulation strip, the porous structure can absorb and scatter sound, further reduce the intensity of sound, thereby realize the effective sound insulation of sound, and the floor passes through multilayer sound insulation component, and the low -frequency noise is handled effectively, and the medium high low -frequency noise has good blocking effect.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a new type of soundproof precast floor slab. Background Technology

[0002] Precast floor slabs are building components that are prefabricated in a prefabrication factory and then transported to the installation site for assembly. The construction of buildings is inseparable from the use of floor slabs; multi-story and high-rise buildings require floor slabs to divide vertical space, thereby forming multiple independent building spaces vertically.

[0003] For example, a precast floor slab, as disclosed in patent publication number CN218437701U, includes a floor slab body. The floor slab body has a first connector on its installation side. Pipelines are installed inside the floor slab body, and a first tongue-and-groove joint is provided at the pipe interface. The presence of pipelines inside the floor slab body and the first tongue-and-groove joint at the pipe interface facilitates pipeline splicing and installation. Concrete is poured at the tongue-and-groove joint after the pipeline installation is completed, and no formwork is required during concrete pouring, simplifying the construction process and significantly saving construction time.

[0004] However, during the use of the above equipment, since the cast-in-place floor slab structure only has one layer of concrete floor slab, the thermal insulation and sound insulation effect is poor. During the later construction and decoration, it is necessary to re-apply the thermal insulation layer and sound insulation layer, which not only makes the construction process complicated and the construction period long, but also increases the cost. Therefore, in view of this situation, we propose a more convenient and practical precast floor slab to meet the usage needs. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of soundproof precast floor slab to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel soundproof precast floor slab, comprising a waterproof layer, a precast concrete slab, and a soundproofing mechanism arranged sequentially from top to bottom;

[0007] The precast concrete slab is provided with transverse and longitudinal reinforcing bars. One side of the transverse and longitudinal reinforcing bars is fixedly connected to a connecting rod and fixedly connected to the sound insulation mechanism.

[0008] The sound insulation mechanism includes a connecting layer connected to the precast concrete slab, a thermal insulation layer located below the connecting layer, and a sound insulation board fixed by a support plate. The bottom surface of the sound insulation board is provided with a number of longitudinal sound insulation strips and transverse sound insulation strips along the longitudinal and transverse directions, respectively.

[0009] Furthermore, the sound insulation strips are arranged to form a grid-like sound-absorbing groove, and the sound-absorbing groove is filled with sound-absorbing blocks.

[0010] Furthermore, the waterproof layer is a continuous sealed structure formed by polymer waterproof membrane or polyurethane waterproof coating, and is fixed to the upper surface of the precast concrete slab by heat fusion or bonding.

[0011] Furthermore, the transverse and longitudinal reinforcing bars are arranged orthogonally inside the precast concrete slab to form a steel reinforcement skeleton. The connecting rod is a metal rod with its upper end anchored inside the precast concrete slab and its lower end penetrating the connecting layer and welded to the support plate.

[0012] Furthermore, the connecting layer is a polymer mortar layer, the insulation layer is a polystyrene foam board, and the supporting plate is a thin metal plate, which is fixed to the sound insulation board by bonding and bolting.

[0013] Furthermore, the longitudinal and transverse sound insulation strips are made of rubber or polyurethane material, the sound-absorbing groove is a hexagonal rectangular groove, and the sound-absorbing block inside is a porous sound-absorbing material, including glass wool, mineral wool and aluminum foam.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This new type of precast soundproof floor slab, through its soundproofing mechanism, ensures that during use, sound first encounters the connecting layer, reducing the energy of direct sound transmission. The sound then reaches the insulation layer, which, while providing insulation, also absorbs and blocks some sound. Subsequently, the sound travels to the soundproofing panel, where the longitudinal and transverse soundproofing strips convert the vibrational energy of the sound into heat. Simultaneously, the porous structure of the sound-absorbing blocks within the sound-absorbing grooves formed by the soundproofing strips absorbs and scatters sound, further reducing its intensity. This achieves effective sound insulation. Through its multi-layered soundproofing components, the floor slab effectively handles low-frequency noise and provides good blocking of mid-, high-, and low-frequency noise, significantly improving overall sound insulation performance. It is highly practical and suitable for widespread adoption.

[0016] At the same time, it significantly improves the bending, compressive and seismic performance of precast concrete slabs, ensuring that the overall load-bearing capacity of the floor slab meets building standards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the floor slab structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the sound insulation mechanism of this utility model.

[0020] In the diagram: 1. Waterproof layer; 2. Precast concrete slab; 3. Transverse reinforcing bar; 4. Longitudinal reinforcing bar; 5. Connecting rod; 6. Sound insulation mechanism; 601. Connecting layer; 602. Thermal insulation layer; 603. Support plate; 604. Sound insulation board; 607. Longitudinal sound insulation strip; 608. Transverse sound insulation strip; 609. Sound-absorbing groove; 610. Sound-absorbing block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Precast floor slabs are required during building construction. The precast floor slabs provided by this utility model are specifically designed for use in building construction. When using them, it is essential to ensure that all components, including the waterproof layer 1, precast concrete slab 2, transverse reinforcing ribs 3, and longitudinal reinforcing ribs 4, are intact, undamaged, and conform to design specifications. All connectors and fasteners must be checked for completeness and reliability. The longitudinal sound insulation strips 607 and transverse sound insulation strips 608 must be precisely installed in the appropriate positions to form an effective sound insulation grid. Simultaneously, the sound-absorbing grooves 609 and sound-absorbing blocks 610 must also be installed correctly to enhance sound insulation and noise reduction effects.

[0023] like Figures 1-3 As shown, this utility model provides a technical solution: a novel soundproof precast floor slab, comprising a waterproof layer 1, a precast concrete slab 2, and a soundproofing mechanism 6 arranged sequentially from top to bottom; the precast concrete slab 2 is provided with transverse reinforcing ribs 3 and longitudinal reinforcing ribs 4, and a connecting rod 5 is fixedly connected to one side of the transverse reinforcing ribs 3 and longitudinal reinforcing ribs 4 and is fixedly connected to the soundproofing mechanism 6; the soundproofing mechanism 6 includes a connecting layer 601 connected to the precast concrete slab 2, a thermal insulation layer 602 provided below the connecting layer 601, and a soundproofing plate 604 fixed by a support plate 603, wherein a plurality of longitudinal soundproofing strips 607 and transverse soundproofing strips 608 are respectively provided on the bottom surface of the soundproofing plate 604 along the longitudinal and transverse directions.

[0024] like Figure 2 As shown, the sound insulation strips are arranged to form a grid-like sound-absorbing groove 609, and the sound-absorbing groove 609 is filled with sound-absorbing blocks 610. The waterproof layer 1 is a continuous sealed structure formed by polymer waterproof membrane or polyurethane waterproof coating, which is fixed to the upper surface of the precast concrete slab 2 by hot melting or bonding.

[0025] like Figure 3As shown, the transverse reinforcing bars 3 and the longitudinal reinforcing bars 4 are orthogonally arranged inside the precast concrete slab 2 to form a steel reinforcement skeleton. The connecting rod 5 is a metal rod, the upper end of which is anchored inside the precast concrete slab 2, and the lower end passes through the connecting layer 601 and is welded and fixed to the support plate 603. The connecting layer 601 is a polymer mortar layer, the insulation layer 602 is a polystyrene foam board, and the support plate 603 is a thin metal plate, which is fixed to the sound insulation board 604 by bonding and bolting. The longitudinal sound insulation strip 607 and the transverse sound insulation strip 608 are made of rubber or polyurethane material. The sound-absorbing groove 609 is a hexagonal rectangular groove, and the sound-absorbing block 610 filled inside it is a porous sound-absorbing material, including glass wool, mineral wool and aluminum foam.

[0026] It is important to note that sound originating from above the floor slab is initially blocked by the polymer waterproof layer 1. It then reaches the precast concrete slab 2, where the longitudinal reinforcing ribs 4 and transverse reinforcing ribs 3 enhance overall strength and help reduce some vibrations. The sound then travels to the connecting layer 601 of the sound insulation mechanism 6, reducing the direct energy transmission of sound. Simultaneously, the sound reaches the insulation layer 602, which, while providing insulation, also absorbs and blocks some sound. The sound then propagates to the sound insulation board 604, where the longitudinal and transverse sound insulation strips 607 and 608 convert the vibrational energy of the sound into heat. At the same time, the sound-absorbing blocks 610 within the sound-absorbing grooves 609 formed by the sound insulation strips, with their porous structure, absorb and scatter sound, further reducing its intensity. This achieves effective sound insulation. Through multiple layers of sound insulation components, this floor slab effectively handles low-frequency noise and provides good blocking for mid-, high-, and low-frequency noise, significantly improving overall sound insulation performance.

[0027] Example 1: Example of using floor slabs in high-end residential buildings

[0028] This embodiment focuses on achieving the ultimate sound insulation effect and living comfort, meeting the demand of the high-end residential market for a quiet environment. Application scenarios: floor slabs of high-end apartments and residential buildings, with particular emphasis on isolating impact sounds such as footsteps and furniture dragging sounds from upstairs, as well as airborne sounds such as conversations and television sounds. Detailed implementation method:

[0030] Waterproof layer 1: A 1.5mm thick polymer self-adhesive waterproof membrane is used. During the factory prefabrication process, it is tightly bonded to the upper surface of the precast concrete slab 2 by hot melting, forming a strong and seamless waterproof barrier to ensure that water will not leak to the floor below even if the resident accidentally spills water in the future.

[0031] Precast concrete slab 2: 120mm thick, C30 strength grade.

[0032] Reinforcing ribs and connections: The interior is equipped with HRB400 grade threaded steel bars as transverse reinforcing ribs 3 and longitudinal reinforcing ribs 4, with a spacing of 150mm, forming a strong steel mesh. The connecting rods 5 extending from it are φ10mm galvanized threaded steel bars, with the lower end extending out of the bottom of the plate.

[0033] Soundproofing mechanism 6:

[0034] Connecting layer 601: 20mm thick polymer cement waterproof mortar is used, which serves both as a leveling agent and to firmly bond the insulation layer 602.

[0035] Insulation layer 602: It uses 50mm thick extruded polystyrene foam board XPS. Its dense closed-cell structure not only provides excellent thermal insulation performance, but its high elastic modulus also enhances the sound insulation effect of the "spring" layer.

[0036] Support plate 603 and sound insulation plate 604: Support plate 603 is a 1.2mm thick galvanized steel plate, pre-stamped into a groove shape with upward folded edges. Sound insulation plate 604 is an 18mm thick cement fiber pressure board with high density and good sound insulation performance. The two are bonded together with structural adhesive and then mechanically fixed with self-tapping screws to ensure a secure connection. Support plate 603 is rigidly connected to the lower end of connecting rod 5 by welding through its folded edges. Sound insulation strip and sound-absorbing groove 609: Grooves are opened on the bottom surface of the cement fiber board, and 10mm×10mm EPDM sound insulation strips are embedded to form a grid with a spacing of 300mm. The sound-absorbing groove 609 is a 300mm×300mm square grid. Sound-absorbing block 610: Each sound-absorbing groove 609 is filled with 50mm thick centrifugal glass wool board with a density of 32kg / m³. 3 The exterior is wrapped with non-woven fabric to prevent fiber shedding. The glass wool board is flush with the top surface of the sound insulation strip, forming a complete flat surface.

[0037] Example 2: Example for use in commercial office buildings such as conference rooms

[0038] This embodiment ensures performance while taking into account the efficiency of building floor height and assembly construction speed. It is suitable for commercial spaces that require rapid construction and have requirements for indoor acoustic environment. Application scenarios: floor slabs or roof slabs of rooms that require a good acoustic environment, such as office buildings, schools, and hospitals. Detailed implementation method:

[0040] Waterproof layer 1: A 2.0mm thick polyurethane waterproof coating is applied during the prefabrication of the concrete slab to form a seamless, flexible coating, which provides better coverage for irregular nodes such as embedded pipe roots. Precast concrete slab 2: 150mm thick with a strength grade of C35 to withstand the greater loads of commercial buildings. Reinforcing bars and connections: The reinforcing bars are welded steel trusses, and the connecting rod 5 is an extension of the lower chord of the truss.

[0041] Soundproofing mechanism 6:

[0042] Connection layer 601: A 15mm thick ordinary cement mortar leveling layer;

[0043] Insulation layer 602: Made of 40mm thick rock wool board, which provides both thermal insulation and sound insulation, and meets the higher Class A fire protection requirements for commercial buildings;

[0044] Support plate 603 and sound insulation board 604: Support plate 603 is a 0.8mm thick V-shaped keel, and sound insulation board 604 is two layers of 12mm thick gypsum board installed with staggered joints. The support keel and connecting rod 5 are clamped and fixed by bolts, and the gypsum board is fixed to the keel with self-tapping screws.

[0045] Sound insulation strip and sound-absorbing groove 609: The longitudinal sound insulation strip 608 and the transverse sound insulation strip 608 are omitted. A longitudinal and transverse groove with a depth of 5mm and a width of 20mm is directly opened on the surface of the bottom gypsum board to form a 500mm×500mm grid-shaped sound-absorbing groove 609.

[0046] Sound-absorbing block 610: The groove is filled with environmentally friendly polyester fiber sound-absorbing cotton, and finally a layer of non-woven fabric is pasted on for sealing and leveling, providing a flat base surface for subsequent direct spraying of paint or pasting of wallpaper.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A novel sound-insulating precast floor slab, characterized in that: It includes a waterproof layer (1), a precast concrete slab (2), and a sound insulation mechanism (6) arranged sequentially from top to bottom; The precast concrete slab (2) is provided with transverse reinforcing bars (3) and longitudinal reinforcing bars (4). The transverse reinforcing bars (3) and longitudinal reinforcing bars (4) are fixedly connected to a connecting rod (5) on one side and fixedly connected to the sound insulation mechanism (6). The sound insulation mechanism (6) includes a connecting layer (601) connected to the precast concrete slab (2), a thermal insulation layer (602) located below the connecting layer (601), and a sound insulation board (604) fixed by a support plate (603). The bottom surface of the sound insulation board (604) is provided with a plurality of longitudinal sound insulation strips (607) and transverse sound insulation strips (608) along the longitudinal and transverse directions, respectively.

2. The novel sound-insulating precast floor slab according to claim 1, characterized in that: The sound insulation strips are arranged to form a grid-like sound-absorbing groove (609), and the sound-absorbing groove (609) is filled with a sound-absorbing block (610).

3. The novel sound-insulating precast floor slab according to claim 1, characterized in that: The waterproof layer (1) is a continuous sealed structure formed by polymer waterproof membrane or polyurethane waterproof coating, and is fixed to the upper surface of the precast concrete slab (2) by hot melting or bonding.

4. The novel sound-insulating precast floor slab according to claim 1, characterized in that: The transverse reinforcing bars (3) and longitudinal reinforcing bars (4) are arranged orthogonally inside the precast concrete slab (2) to form a steel reinforcement skeleton. The connecting rod (5) is a metal rod with its upper end anchored inside the precast concrete slab (2) and its lower end penetrating the connecting layer (601) and welded to the support plate (603).

5. A novel sound-insulating precast floor slab according to claim 1, characterized in that: The connecting layer (601) is a polymer mortar layer, the insulation layer (602) is a polystyrene foam board, and the support plate (603) is a thin metal plate, which is fixed to the sound insulation board (604) by bonding and bolting.

6. The novel sound-insulating precast floor slab according to claim 1, characterized in that: The longitudinal sound insulation strip (607) and the transverse sound insulation strip (608) are made of rubber or polyurethane material, and the sound-absorbing groove (609) is a hexagonal rectangular groove. The sound-absorbing block (610) filled inside is a porous sound-absorbing material, including glass wool, mineral wool and aluminum foam.

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