Prefabricated soundproof floor

Abstract

The utility model discloses a prefabricated sound insulation floor, including steel bar truss, flexible connecting piece and from top to bottom setting sound insulation layer and bottom layer in proper order, the sound insulation layer is by damping material constitutes, the flexible connecting piece has the first part that passes through the sound insulation layer and protrudes on it upwards and the second part that is fixedly connected downwards with the bottom layer, the steel bar truss is connected with the sound insulation layer through the first part of flexible connecting piece, and the bottom layer and the sound insulation layer realize fixed connection through the second part of flexible connecting piece. This prefabricated sound insulation floor has the advantages of reducing construction procedure, reducing floor thickness, realizing industrial production and improving sound insulation effect.

Description

Technical Field

[0001] This utility model relates to the field of building floor slab technology, and in particular to a prefabricated soundproof floor slab. Background Technology

[0002] In the construction industry, floor sound insulation is a crucial technical issue. Currently, common sound insulation methods primarily involve applying sound-absorbing mortar, coatings, or other materials to the building's structural surface. While these methods can achieve a certain level of sound insulation by blocking vibration transmission and dissipating vibration energy, they suffer from several technical drawbacks. First, these sound insulation layers require secondary construction on the structural layer, increasing construction steps and extending the construction period. Second, to ensure the effectiveness and lifespan of the sound insulation layer, additional leveling and protective layers are typically required, increasing the overall thickness of the floor slab and reducing the building's effective headroom. Furthermore, existing sound insulation methods are difficult to integrate with precast composite slab technology, hindering industrialized production and limiting construction efficiency. Additionally, when attempting to place damping sound insulation materials directly within the precast base slab of a precast composite slab, the presence of steel trusses creates a rigid connection between the precast base slab and the subsequent pouring layer, preventing the damping material from achieving the necessary deformation and energy dissipation, thus failing to fully realize its intended sound insulation effect. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides a prefabricated soundproof floor slab to solve the problem of poor sound insulation performance of traditional soundproof mortar in prefabricated composite slab structural layers.

[0004] This utility model is achieved using the following technical solution: A prefabricated soundproof floor slab includes a steel truss, a flexible connector, and a soundproof layer and a bottom layer arranged sequentially from top to bottom. The soundproof layer is made of damping material. The flexible connector has a first part that extends upward through the soundproof layer and protrudes therefrom, and a second part that is fixedly connected downward to the bottom layer. The steel truss is connected to the soundproof layer through the first part of the flexible connector, and the bottom layer and the soundproof layer are fixedly connected through the second part of the flexible connector.

[0005] Furthermore, the steel truss is equipped with a fastening member, wherein the flexible connector is configured to pass through the bottom layer and the sound insulation layer from bottom to top and then connect with the fastening member to connect the bottom layer, the sound insulation layer and the steel truss into a whole structure.

[0006] Furthermore, it also includes a concrete surface layer disposed on the upper surface of the sound insulation layer, wherein the fastener is at least partially embedded in the concrete surface layer for fixed connection with the first part of the flexible connector, and the fastener at least partially protrudes upward from the concrete surface layer for forming a snap connection with the steel truss.

[0007] Furthermore, the fastener has a fixing hole, the first part of the flexible connector is inserted into the fixing hole, and the fastener has a snap-fit ​​opening for engaging with the steel truss.

[0008] Furthermore, it also includes a concrete surface layer disposed on the upper surface of the sound insulation layer, the steel truss (1) having a leg portion, the concrete surface layer being configured to fully cover and wrap the leg portion and the first portion of the flexible connector.

[0009] Furthermore, the flexible connector is a self-tapping bolt or a self-tapping screw.

[0010] Furthermore, the bottom layer and the sound insulation layer are provided with openings at corresponding positions for the flexible connector to pass through.

[0011] A prefabricated soundproof floor slab includes a steel truss, a soundproof layer, and a bottom layer. The steel truss has a support portion embedded in the bottom layer. The soundproof layer is made of damping material and is disposed on the upper surface of the bottom layer and integrated with the bottom layer.

[0012] Furthermore, the sound insulation layer is fixed to the upper surface of the bottom layer by bonding or hot-melt.

[0013] A precast soundproof floor slab includes a steel truss and a composite sound insulation layer. The steel truss has a support portion embedded in the composite sound insulation layer. The composite sound insulation layer is configured as an integral composite soundproof concrete component combined with concrete and damping materials.

[0014] Compared with the prior art, the beneficial effects of this utility model include at least the following: The first part of the flexible connector of this invention passes through the sound insulation layer and forms a rigid connection with the steel truss, while the second part of the flexible connector connects the bottom layer and the sound insulation layer, avoiding the problem of limited deformation of damping materials caused by traditional rigid connections. By using a layered sound insulation layer and bottom layer, combined with the upper and lower fixing effect of the flexible connector, the integrity of the structure is ensured, while the sound insulation layer can flexibly deform to dissipate vibration energy, thereby improving the sound insulation effect and solving the problem of poor sound insulation performance of traditional sound insulation mortar in precast composite slab structures. Furthermore, the sound insulation layer and bottom layer are pre-assembled through the flexible connector, allowing for one-time prefabrication in the factory, realizing integrated manufacturing of building structure, sound insulation, and thermal insulation functions. During on-site construction, only hoisting and connection procedures are required, significantly reducing on-site wet work and shortening the construction period. It avoids the cumbersome steps of first pouring the structural layer and then laying the sound insulation material in traditional construction, not only improving construction efficiency but also reducing quality risks caused by human factors, resulting in lower overall costs. By specifying the material type of the sound insulation layer as a damping material, the high elastic modulus and viscoelastic characteristics of this type of material are fully utilized. When subjected to vibration and impact, damping materials can effectively absorb sound wave energy through the stretching and deformation of their molecular chains, significantly improving sound insulation compared to traditional rigid materials. This material selection solves the deformation limitation problem caused by rigid connections when embedding damping materials in precast composite slabs, allowing them to still achieve vibration attenuation within the building structure. This precast soundproof floor slab offers advantages such as reduced construction steps, reduced slab thickness, industrialized production, and improved sound insulation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first structure of the prefabricated soundproof floor slab in Embodiment 1 of this utility model; Figure 2 for Figure 1 A sectional view of the structure; Figure 3 This is a cross-sectional view of the buckle component of Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the second structure of the prefabricated soundproof floor slab in Embodiment 1 of this utility model; Figure 5 yes Figure 4 Front view of the structure; Figure 6 This is a schematic diagram of the second structure of the prefabricated soundproof floor slab according to Embodiment 2 of this utility model. The concrete surface layer is not shown in the figure. Figure 7 This is a schematic diagram of the prefabricated soundproof floor slab of Embodiment 3 of this utility model; Figure 8 yes Figure 7 Front view of the structure; Figure 9 This is a schematic diagram of the underlying layer of this utility model; Figure 10 This is a schematic diagram of the prefabricated soundproof floor slab of Embodiment 4 of this utility model; Figure 11 yes Figure 10 Front view of the structure; In the diagram: 1. Steel truss; 11. Support leg; 2. Flexible connector; 21. First part; 3. Concrete surface layer; 4. Sound insulation layer; 5. Bottom layer; 51. Opening; 6. Fastener; 61. Fixing hole; 62. Bayonet; 7. Composite sound insulation layer. Detailed Implementation

[0016] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0017] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0018] Example 1 like Figures 1 to 6 As shown, the present invention provides a prefabricated soundproof floor slab, including a steel truss 1, a flexible connector 2, and a soundproof layer 4 and a bottom layer 5 arranged sequentially from top to bottom. The soundproof layer 4 is made of damping material. The flexible connector 2 has a first part 21 that passes upward through the soundproof layer 4 and protrudes therefrom, and a second part that is fixedly connected downward to the bottom layer 5. The steel truss 1 is connected to the soundproof layer 4 through the first part 21 of the flexible connector 2, and the bottom layer 5 and the soundproof layer 4 are fixedly connected through the second part of the flexible connector 2.

[0019] In this embodiment, the first part 21 of the flexible connector 2 passes through the sound insulation layer 4 and forms a rigid connection with the steel truss 1, while the second part of the flexible connector 2 connects the bottom layer 5 and the sound insulation layer 4, avoiding the problem of limited deformation of damping materials caused by traditional rigid connections. By layering the sound insulation layer 4 and the bottom layer 5, combined with the upper and lower fixing effect of the flexible connector 2, the integrity of the structure is ensured, while the sound insulation layer 4 can flexibly deform to dissipate vibration energy, thereby improving the sound insulation effect and solving the problem of poor sound insulation performance of traditional sound insulation mortar in precast composite slab structures. Simultaneously, the sound insulation layer 4 and the bottom layer 5 are pre-assembled through the flexible connector 2, eliminating the need for secondary construction and enabling industrialized production. By limiting the material type of the sound insulation layer 4 to damping material, the high elastic modulus and viscoelastic characteristics of this type of material are fully utilized. When subjected to vibration impact, the damping material can effectively absorb sound wave energy through the stretching deformation of its molecular chains, significantly improving the sound insulation effect compared to traditional rigid materials. This material selection solves the deformation limitation problem caused by rigid connections when embedding damping materials into precast composite slabs, allowing them to still achieve vibration attenuation within the building's structural layers. Furthermore, these precast soundproof floor slabs can be prefabricated in a single process in the factory, achieving integrated manufacturing of building structure, sound insulation, and thermal insulation functions. On-site construction only requires hoisting and connection procedures, significantly reducing on-site wet work and shortening the construction period. It avoids the cumbersome steps of traditional construction where the structural layer is poured first and then the sound insulation material is laid, not only improving construction efficiency but also reducing quality risks caused by human factors, resulting in lower overall costs.

[0020] It should be noted that the damping material can be made of polyurethane, butyl rubber or silicone rubber-based composite materials.

[0021] In a preferred embodiment, the steel truss 1 is equipped with a fastener 6, wherein the flexible connector 2 is configured to pass through the bottom layer 5 and the sound insulation layer 4 from bottom to top and then connect to the fastener 6 to connect the bottom layer 5, the sound insulation layer 4 and the steel truss 1 into an integral structure.

[0022] In this embodiment, by setting the fastener 6 as an intermediate connection structure, the steel truss 1 is fixedly connected to the first part 21 of the flexible connector 2 through the fastener 6, ensuring connection stability. The design of the fastener 6 enables the steel truss 1 and the flexible connector 2 to form a detachable mechanical connection, which not only enables the rapid installation of the steel truss 1 and reduces construction complexity, but also meets the requirements of modular assembly. Furthermore, the flexible connector 2 releases the deformation space of the sound insulation layer 4, enabling it to effectively dissipate vibration energy.

[0023] Optionally, it also includes a concrete surface layer 3 disposed on the upper surface of the sound insulation layer 4, wherein the fastener 6 is at least partially embedded in the concrete surface layer 3 to be fixedly connected with the first part 21 of the flexible connector 2, and the fastener 6 protrudes upward from the concrete surface layer 3 to form a fastening connection with the steel truss 1.

[0024] In this embodiment, the portion of the snap-fit ​​member 6 protruding upwards from the concrete surface layer 3 is snapped into the steel truss 1, achieving a non-rigid connection between the steel truss 1 and the concrete surface layer 3, while avoiding vibration transmission interference to the sound insulation layer 4 caused by traditional welding or binding methods. Furthermore, by adding a concrete surface layer 3 on top of the sound insulation layer 4, the integrity of the sound insulation layer 4 and the steel truss 1 is maintained, and the controllable flexible deformation space allows the damping material to fully dissipate vibration energy, ultimately enabling the sound insulation layer 4 to play an energy dissipation role within the structural layer.

[0025] Optionally, the concrete surface layer 3 can be made of ultra-high performance concrete or fine aggregate concrete. Ultra-high performance concrete, due to its ultra-high strength, can reduce the surface layer thickness, thereby controlling the total floor slab thickness and avoiding building clearance loss. Simultaneously, its dense structure facilitates a reliable bond with the flexible connector 2. Fine aggregate concrete, on the other hand, possesses good fluidity and economy, meeting the requirements of large-scale precast component production while ensuring the quality of the interface bond with the sound insulation layer 4 through optimized aggregate gradation. The selection of both materials avoids the risk of detachment from the damping layer caused by the large shrinkage deformation of traditional concrete, ensuring the stability of the flexible connection system.

[0026] In a preferred embodiment, the buckle 6 is provided with a fixing hole 61, the first part 21 of the flexible connector 2 is inserted into the fixing hole 61, and the buckle 6 is provided with a snap-fit ​​opening 62 for snap-fit ​​connection with the steel truss 1.

[0027] In this embodiment, by providing a fixing hole 61, the first part 21 of the flexible connector 2 can be precisely inserted and mechanically locked, ensuring the accuracy of the connection position and avoiding the rigid constraints caused by traditional welding or binding. The steel truss 1 is snapped into the snap-fit ​​62, allowing it to undergo slight displacement when subjected to vibration, thereby releasing stress and causing the sound insulation layer 4 to undergo shear deformation. This dual connection mechanism maintains the integrity of the concrete surface layer 3 and the steel truss 1, and through the controllable flexible deformation space, the damping material fully dissipates vibration energy, ultimately enabling the sound insulation layer 4 to play an energy dissipation role within the structural layer.

[0028] In a preferred embodiment, the flexible connector 2 is a self-tapping bolt or a self-tapping screw.

[0029] In this embodiment, by defining the flexible connector 2 as a self-tapping bolt or screw, the dual functions of structural connection and flexible deformation are achieved. The threaded structure of the self-tapping bolt or screw forms a self-locking connection when penetrating the sound insulation layer 4, ensuring the fixing strength between the bottom layer 5 and the sound insulation layer 4, while allowing the damping material to deform during vibration through the tiny gap created by the thread engagement. This specific type of fastener differs from traditional welding or rigid anchoring methods; its helical engagement surface has a small elastic displacement space under load, allowing the sound insulation layer 4 to dissipate sound energy through its own shear deformation during vibration energy transmission, thereby effectively utilizing the sound insulation performance of the damping material. Simultaneously, the self-tapping connection eliminates the need for pre-embedded nuts or complex positioning, simplifying the assembly process and meeting the needs of industrialized production of prefabricated components.

[0030] In a preferred embodiment, the bottom layer 5 and the sound insulation layer 4 are provided with openings 51 at corresponding positions for the flexible connector 2 to pass through.

[0031] In this embodiment, reference Figure 9 By creating openings 51 at corresponding positions on the bottom layer 5 and the sound insulation layer 4, a physical channel is provided for the flexible connector 2 to pass through. The design of the openings 51 allows the flexible connector 2 to pass through the sound insulation layer 4 and form a fixed connection with the bottom layer 5, while avoiding rigid constraints on the sound insulation layer 4. The openings 51 ensure the overall connection strength of the flexible connector 2 to the sound insulation layer 4 and the bottom layer 5, while also providing space for free deformation of the sound insulation layer 4. When the floor slab is subjected to vibration loads, the sound insulation layer 4 can undergo shear deformation in the area surrounding the openings 51, dissipating vibration energy through the viscoelastic properties of the polymer material, thereby achieving sound insulation.

[0032] It should be noted that the bottom layer 5 can be made of at least one of cement fiberboard, UHPC board, HPC board, or fine aggregate concrete. By limiting the bottom layer 5 to at least one of cement fiberboard, UHPC board, HPC, and fine aggregate concrete, the material performance can be adapted to meet the structural load-bearing requirements. Cement fiberboard has lightweight and high strength characteristics, which can reduce the self-weight of the floor slab and increase the deformation space of the sound insulation layer 4. UHPC board and HPC board can reduce the thickness of the bottom layer 5 through their ultra-high strength characteristics, which can meet the requirements of factory prefabrication for material forming accuracy. Fine aggregate concrete can achieve low-cost construction through conventional materials, while retaining the feasibility of thermal fusion bonding with the sound insulation layer 4.

[0033] Example 2 refer to Figure 4-6 The soundproof floor slab differs from that in Example 1 in that there is no intermediate connecting structure (fastener 6) between the steel truss 1 and the flexible connector (2), specifically: It also includes a concrete surface layer 3 disposed on the upper surface of the sound insulation layer 4, the steel truss 1 having a support portion 11, and the concrete surface layer 3 being configured to fully cover and wrap the support portion 11 and the first portion 21 of the flexible connector 2.

[0034] In this embodiment, the steel truss 1 and the flexible connector 2 are embedded in the concrete surface layer 3 through the support portion 11 and the first portion 21 to form an integral structure, forming a composite connection structure that can both transmit loads and have flexible deformation. This design allows vibration energy to be effectively dissipated through the combined structure of the flexible connector 2 and the support portion 11, thereby creating favorable conditions for the sound insulation layer 4 to play a role in deformation energy dissipation.

[0035] It is understandable that the support leg 11 can adopt an L-shaped bend or a U-shaped structure, which can increase the contact area with the concrete and improve the bonding strength.

[0036] Example 3 refer to Figures 7 to 8 This utility model also provides a third type of prefabricated soundproof floor slab, including a steel truss 1, a soundproof layer 4 and a bottom layer 5. The steel truss 1 has a support portion 11 embedded in the bottom layer 5. The soundproof layer 4 is made of damping material and is disposed on the upper surface of the bottom layer 5 and integrated with the bottom layer 5.

[0037] In this embodiment, by embedding the support portions 11 of the steel truss 1 inside the bottom layer 5, the steel truss 1 and the bottom layer 5 form a stable connection, thereby completing the structural integration in the prefabrication stage and avoiding secondary construction; the sound insulation layer 4 is fixed to the upper surface of the bottom layer 5 by bonding or hot melting, and the interface between the two is fully fused by high temperature melting to form a gapless composite structure, eliminating the vibration transmission path caused by traditional rigid connection, ensuring that the damping material can deform freely to consume vibration energy, and further improving the sound insulation effect.

[0038] This invention enables the factory-integrated production of the sound insulation layer 4 and prefabricated components, reducing on-site construction procedures and building layer thickness. Simultaneously, the seamless composite structure ensures the damping material effectively performs its sound insulation function. The pre-embedded supports and hot-melt bonding process during the prefabrication stage solves the inefficiency caused by secondary construction in traditional solutions, as well as the negative impact of rigid connections on sound insulation performance, ultimately forming a prefabricated floor slab that combines structural strength with high-efficiency sound insulation.

[0039] Example 4 This utility model also provides a prefabricated soundproof floor slab, including a steel truss 1 and a composite sound insulation layer 7. The steel truss 1 has a support portion 11 embedded in the composite sound insulation layer 7. The composite sound insulation layer 7 is configured as an integral composite sound insulation concrete component combined with concrete and damping materials.

[0040] In this embodiment, reference Figure 10 and Figure 11 In this embodiment, the prefabricated soundproof floor slab is a composite soundproof component with embedded steel trusses 1. By embedding the support portion 11 of the steel trusses 1 in the concrete-damping composite soundproof layer 7, an integrated composite soundproof concrete component is formed. Compared with the traditional method of first constructing the structural layer and then adding the soundproof layer 4, it has the following outstanding advantages: (1) It greatly enhances the overall structural strength and stiffness of the components and avoids the risk of delamination: Since the support portion 11 of the steel truss 1 is directly embedded and anchored inside the composite sound insulation layer 7, a strong bond is formed between the concrete and the steel reinforcement. This makes the steel truss 1 and the composite sound insulation layer 7 a complete load-bearing unit, rather than a simple superposition. The structure can effectively transfer and distribute loads, has high overall stiffness, and excellent bending and shear resistance, making it particularly suitable for floor slabs, wall panels, and other applications where load-bearing capacity is required. The integrally formed structure fundamentally eliminates the quality problems such as delamination and peeling that are common in traditional composite panels.

[0041] (2) The synergistic effect of damping materials and concrete effectively broadens the sound insulation frequency band, especially significantly improving the low-frequency sound insulation effect: concrete provides the main mass, effectively isolating mid-to-high frequency sounds; while the built-in damping materials can effectively suppress and absorb structural vibration energy, especially in the low-frequency range, significantly reducing sound transmission caused by resonance. The support portion 11 of the steel truss 1 is wrapped with damping material, effectively cutting off the vibration path transmitted through the steel bars. The combination of concrete and damping materials achieves synergistic control of noise at different frequencies, providing a more comprehensive and efficient sound insulation solution.

[0042] (3) The construction process has been simplified, and the integrated preparation of structure and sound insulation functions has been realized, improving construction efficiency and quality control: The prefabricated sound insulation floor slab can be prefabricated in the factory in one go, realizing the integrated manufacturing of building structure, sound insulation and heat insulation functions. During on-site construction, only hoisting and connection processes are required, which greatly reduces on-site wet work and shortens the construction period. It avoids the cumbersome steps of pouring the structural layer first and then laying the sound insulation material in traditional construction, which not only improves construction efficiency, but also reduces quality risks caused by human factors, resulting in lower overall costs.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A prefabricated soundproof floor slab, characterized in that, The device includes a steel truss (1), a flexible connector (2), and a sound insulation layer (4) and a bottom layer (5) arranged sequentially from top to bottom. The sound insulation layer (4) is made of damping material. The flexible connector (2) has a first part (21) that extends upward through the sound insulation layer (4) and protrudes from it, and a second part that is fixedly connected downward to the bottom layer (5). The steel truss (1) is connected to the sound insulation layer (4) through the first part (21) of the flexible connector (2), and the bottom layer (5) and the sound insulation layer (4) are fixedly connected through the second part of the flexible connector (2).

2. The prefabricated soundproof floor slab according to claim 1, characterized in that, The steel truss (1) is equipped with a fastener (6), wherein the flexible connector (2) is configured to pass through the bottom layer (5) and the sound insulation layer (4) from bottom to top and then connect with the fastener (6) to connect the bottom layer (5), the sound insulation layer (4) and the steel truss (1) into a whole structure.

3. The pre-fabricated soundproof floor according to claim 2, characterized in that, It also includes a concrete surface layer (3) disposed on the upper surface of the sound insulation layer (4), wherein the fastener (6) is at least partially embedded in the concrete surface layer (3) to be fixedly connected to the first part (21) of the flexible connector (2), and the fastener (6) protrudes at least partially upward from the concrete surface layer (3) to form a fastening connection with the steel truss (1).

4. The pre-finished soundproof floor according to claim 2, characterized in that, The buckle (6) is provided with a fixing hole (61), and the first part (21) of the flexible connector (2) is inserted into the fixing hole (61). The buckle (6) is provided with a snap-fit ​​opening (62) for snap-fit ​​connection with the steel truss (1).

5. The pre-finished soundproof floor according to claim 1, characterized in that, It also includes a concrete surface layer (3) disposed on the upper surface of the sound insulation layer (4), the steel truss (1) having a leg portion (11), and the concrete surface layer (3) being configured to fully cover the leg portion (11) and the first part (21) of the flexible connector (2).

6. A pre-fabricated soundproof floor according to any one of claims 1-5, characterized in that The flexible connector (2) is a self-tapping bolt or a self-tapping screw.

7. The pre-fabricated soundproof floor according to claim 6, characterized in that The bottom layer (5) and the sound insulation layer (4) are respectively provided with openings (51) for the flexible connector (2) to pass through.

8. A pre-fabricated soundproof floor, characterized in that It includes a steel truss (1), a sound insulation layer (4) and a bottom layer (5). The steel truss (1) has a support portion (11) embedded in the bottom layer (5). The sound insulation layer (4) is made of damping material and is disposed on the upper surface of the bottom layer (5) and integrated with the bottom layer (5).

9. The prefabricated soundproof floor slab according to claim 8, characterized in that, The sound insulation layer (4) is fixed to the upper surface of the bottom layer (5) by bonding or hot melting.

10. A precast soundproofing floor panel, characterized by It includes a steel truss (1) and a composite sound insulation layer (7), the steel truss (1) having a support portion (11) embedded in the composite sound insulation layer (7), the composite sound insulation layer (7) being configured as an integral composite sound insulation concrete component by combining concrete and damping materials.

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