Enhanced inner wall surface sound absorption structure

Abstract

The utility model discloses an enhanced inner wall surface sound absorption structure which comprises a concrete wall body, a cement mortar leveling layer, a first sound absorption layer, a first light steel keel layer, a double-layer gypsum board, a second sound absorption layer and a second light steel keel layer which are sequentially arranged. The projection of the first light steel keel layer and the projection of the second light steel keel layer on the projection plane parallel to the concrete wall body are configured to be not overlapped, and the first light steel keel layer and the second light steel keel layer are fixed to the concrete wall body through a first keel anchor bolt and a second keel anchor bolt correspondingly. The first light steel keel layer and the second light steel keel layer comprise a plurality of transverse keels and vertical keels which are orthogonally connected, and the distance between the transverse keels and the distance between the vertical keels located on the same light steel keel layer are 600 mm. The sound absorption device is simple in structure, convenient to install and capable of achieving a good sound absorption effect.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to an enhanced inner wall sound absorption structure. Background Art

[0002] With the high-quality development of industrial and civil buildings, while paying attention to structural safety, we also pay attention to green environmental protection and energy conservation and emission reduction. However, noise pollution, which is listed as one of the "four major environmental pollutions", is ubiquitous and has a serious impact on people's lives and health. In order to ensure the privacy of the indoor environment and reduce the impact of various noises from the outside world or adjacent equipment rooms, it is a general trend to take noise reduction measures for important functional places (such as: silent workshops, large conference centers, multi-function halls, lounges, offices, theaters, star-rated hotels, etc.). Among the many methods, building sound-absorbing walls is one of the effective means of controlling noise. It mainly uses sound-absorbing materials or sound-absorbing structures to absorb and consume the incident sound energy, reduce reflected sound, thereby improving the indoor acoustic environment and achieving the purpose of reducing indoor noise.

[0003] Conventional sound-absorbing walls in the prior art generally adopt the following structure: first install the keel on the wall, then fill the keel with fibrous sound-absorbing material, then apply a protective film of the sound-absorbing material, and finally install the perforated plate or sound-absorbing plate. This conventional sound-absorbing wall structure has several shortcomings: 1. The sound absorption contribution of the wall comes from the fibrous sound-absorbing material filled in the keel (usually glass wool). Glass wool is prone to moisture or fiberization in long-term use. When it gets damp, the glass wool will fall and clump, affecting its sound absorption performance; 2. The dust and microfibers formed after the aging of the fibrous sound-absorbing material glass wool will also pollute the indoor and outdoor environment and affect human health; 3. The overall sound absorption effect of the structure is not ideal, which affects life and office, and cannot meet the functionality, comfort and green building related standards, reducing the service life and sound absorption effect; 4. The wall decoration structure is used for decoration on the surface of the building. In addition to the decorative and beautifying effect and meeting people's aesthetic needs, it must also meet the characteristics of structural stability, no deformation, and no shedding. The prior art just has this shortcoming. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide an enhanced interior wall sound absorption structure to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A reinforced interior wall sound absorption structure comprises a concrete wall, a cement mortar leveling layer, a first sound absorption layer, a first light steel keel layer, a double-layer gypsum board, a second sound absorption layer, and a second light steel keel layer which are arranged in sequence, wherein the projections of the first light steel keel layer and the second light steel keel layer on a projection plane parallel to the concrete wall are configured not to overlap, the first light steel keel layer and the second light steel keel layer are fixed to the concrete wall by first keel anchor bolts and second keel anchor bolts, respectively, the first light steel keel layer and the second light steel keel layer comprise a plurality of orthogonally connected transverse keels and vertical keels, and the distance between the transverse keels and the vertical keels in the same light steel keel layer is 600 mm.

[0007] Preferably, a first glass fiber sound-absorbing non-woven fabric and a second glass fiber sound-absorbing non-woven fabric are respectively provided on a side of the first light steel keel layer and a side of the second light steel keel layer away from the concrete wall.

[0008] Preferably, a perforated FC plate is further provided on the side of the second glass fiber sound-absorbing non-woven fabric away from the concrete wall.

[0009] Preferably, the perforated FC plate has a thickness of 8 mm, a size of 600 mm x 600 mm or 600 mm x 1200 mm, a perforation rate greater than or equal to 20%, and a pore size greater than or equal to 4 mm.

[0010] Preferably, the first sound absorbing layer and the second sound absorbing layer are made of centrifugal glass wool with a thickness of 100 mm.

[0011] Preferably, the centrifugal glass wool density of the first sound absorbing layer is greater than or equal to 80 kg / m 3 The centrifugal glass wool density of the second sound absorbing layer is greater than or equal to 32kg / m 3 Less than 80kg / m 3 .

[0012] Preferably, a glass cloth is further provided on a side of the centrifugal glass wool away from the concrete wall.

[0013] Preferably, the thickness of the double-layer gypsum board is 12 mm, and the double-layer gypsum board is spliced ​​with staggered joints.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] 1. The utility model effectively avoids the influence of resonance by staggered separation of the double-layer keel system, and fastens and connects them separately to form the characteristics of separation of each functional layer of the sound-absorbing wall, thereby ensuring the stability of each layer system, achieving sound absorption effect, reducing noise, and improving the working and living environment.

[0016] 2. Centrifugal glass wool is preferred in the structure because its internal fibers are fluffy and interlaced, and there are a large number of tiny pores and holes connected inside and outside. It is a typical porous sound-absorbing material with good sound-absorbing properties.

[0017] 3. Centrifugal glass wool is preferred in the structure because its fibers are arranged irregularly, making the material density higher. Compared with conventional glass wool, it can provide better mechanical strength, is easier to install than glass wool, and also has better corrosion resistance. It solves the problems of glass wool sound absorption layer being easily affected by moisture or fiberization, and falling and agglomerating due to moisture in conventional practices.

[0018] 4. The structure uses two layers of sound-absorbing layers with inconsistent densities. Centrifugal glass wool of different densities are stacked together, and the density of the centrifugal glass wool in the first layer of sound-absorbing layer is higher than that in the second layer, forming a form in which the density of the sound-absorbing layer gradually increases, which can achieve better sound absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of a sound-absorbing wall according to an embodiment of the utility model is shown.

[0020] Figure 2 Shows Figure 1 A partial enlarged view of .

[0021] Figure 3 A schematic diagram showing the arrangement of the first light steel keel layer and the second light steel keel layer in an embodiment of the present utility model is shown.

[0022] Legend:

[0023] 1. Concrete wall; 2. Cement mortar leveling layer; 3. First sound absorption layer; 4. First light steel keel layer; 5. Double-layer gypsum board; 6. Second sound absorption layer; 7. Second light steel keel layer; 8. Perforated FC board; 91. First glass fiber sound absorbing non-woven fabric; 92. Second glass fiber sound absorbing non-woven fabric; 10. First keel anchor bolt; 11. Second keel anchor bolt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1-3 As shown, the present embodiment provides an enhanced interior wall sound absorption structure, comprising a concrete wall 1, a cement mortar leveling layer 2, a first sound absorption layer 3, a first light steel keel layer 4, a double-layer gypsum board 5, a second sound absorption layer 6, and a second light steel keel layer 7 which are arranged in sequence. The projections of the first light steel keel layer 4 and the second light steel keel layer 7 on a projection plane parallel to the concrete wall 1 are configured not to overlap. The first light steel keel layer 4 and the second light steel keel layer 7 are fixed to the concrete wall 1 by first keel anchor bolts 10 and second keel anchor bolts 11, respectively. The first light steel keel layer 4 and the second light steel keel layer 7 include a plurality of orthogonally connected transverse keels and vertical keels. The distance between the transverse keels and the distance between the vertical keels in the same light steel keel layer is 600 mm.

[0027] Working principle and use process of this embodiment

[0028] An enhanced interior wall sound absorption structure, wherein the light steel keel layer adopts a double-layer structure, each layer is independently fastened to ensure the stability of each layer system, forming the characteristic of separation of each functional layer of the sound-absorbing wall, and the layers work independently of each other to reduce resonance. The projections of the first light steel keel layer 4 and the second light steel keel layer 7 on the projection surface parallel to the concrete wall 1 are configured not to overlap, so that the first light steel keel layer 4 and the second light steel keel layer 7 form a staggered arrangement. This arrangement can compensate for and eliminate the effect of gap sound transmission that occurs when a single-layer arrangement is adopted. A double-layer sound absorption layer is adopted to obtain a better sound absorption effect. A double-layer gypsum board 5 is arranged between the first light steel keel layer 4 and the second sound absorption layer 6 to improve the sound absorption, fire prevention and moth resistance of the wall and increase the strength of the wall.

[0029] Example 2

[0030] This embodiment is developed on the basis of the above embodiment to solve the problem of how to stabilize the sound absorbing layer structure. Specifically, Figure 1-3 As shown, the first light steel keel layer 4 and the second light steel keel layer 7 are respectively provided with a first glass fiber sound-absorbing non-woven fabric 91 and a second glass fiber sound-absorbing non-woven fabric 92 on the side away from the concrete wall 1. The glass fiber sound-absorbing non-woven fabric is tightened and fixed on the surface of the light steel keel, which can solve the shortcomings of unstable structure of the sound-absorbing layer, easy deformation and falling off.

[0031] Furthermore, a perforated FC plate 8 is provided on the side of the second glass fiber sound-absorbing non-woven fabric 92 away from the concrete wall 1 , and the perforated FC plate 8 is provided on the outermost side of the wall surface to further improve the sound absorption effect of the wall surface.

[0032] Specifically, the perforated FC plate 8 has a thickness of 8 mm, a size of 600 mm x 600 mm or 600 mm x 1200 mm, a perforation rate greater than or equal to 20%, and a hole diameter greater than or equal to 4 mm.

[0033] Example 3

[0034] This embodiment determines the materials of the first sound absorbing layer 3 and the second sound absorbing layer 6, specifically, Figure 1-3 As shown, the materials of the first sound absorbing layer 3 and the second sound absorbing layer 6 are both 100 mm thick centrifugal glass wool. The internal fibers of the centrifugal glass wool are fluffy and staggered, showing an irregular arrangement. There are a large number of tiny pores and holes connected inside and outside, which makes the material density higher. Compared with conventional glass wool, it can provide better mechanical strength and is easier to install than glass wool. It also has better corrosion resistance and is a typical porous sound absorbing material with good sound absorbing characteristics. The use of centrifugal glass wool solves the problems of the glass wool sound absorbing layer being easily affected by moisture or fiberization, and falling and agglomerating due to moisture in conventional practices.

[0035] Furthermore, the density of the centrifugal glass wool of the first sound absorbing layer 3 is greater than or equal to 80 kg / m 3 The density of the centrifugal glass wool of the second sound absorbing layer 6 is greater than or equal to 32 kg / m 3 Less than 80kg / m 3 , using two sound absorbing layers with inconsistent densities, and the density of the first sound absorbing layer 3 is greater than that of the second sound absorbing layer 6, forming a form in which the density gradually increases, a greater sound absorbing effect can be obtained.

[0036] Furthermore, a glass cloth is provided on the side of the centrifugal glass wool away from the concrete wall 1. The glass cloth wrapped around the centrifugal glass wool has a certain sound-transmitting effect, and also serves as a finishing effect, which is convenient for cutting and prevents possible dust and microfibers from flying, thereby avoiding pollution to the indoor and outdoor environment.

[0037] Example 4

[0038] This embodiment is developed on the basis of the above embodiment to solve the problem of preventing the double-layer gypsum board 5 from affecting the sound absorption effect. Specifically, Figure 1-3 As shown, the thickness of the double-layer gypsum board 5 is 12 mm, and the double-layer gypsum board 5 is staggered to prevent the formation of through seams between the double-layer gypsum boards 5, which would affect the sound absorption effect.

[0039] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An enhanced inner wall sound absorption structure, characterized in that: The invention comprises a concrete wall (1), a cement mortar leveling layer (2), a first sound absorbing layer (3), a first light steel keel layer (4), a double-layer gypsum board (5), a second sound absorbing layer (6), and a second light steel keel layer (7) which are arranged in sequence. The projections of the first light steel keel layer (4) and the second light steel keel layer (7) on a projection plane parallel to the concrete wall (1) are configured not to overlap. The first light steel keel layer (4) and the second light steel keel layer (7) are fixed to the concrete wall (1) by means of a first keel anchor bolt (10) and a second keel anchor bolt (11), respectively. The first light steel keel layer (4) and the second light steel keel layer (7) comprise a plurality of orthogonally connected transverse keels and vertical keels. The distance between the transverse keels and the distance between the vertical keels in the same light steel keel layer is 600 mm.

2. The enhanced interior wall sound absorption structure according to claim 1, characterized in that: A first glass fiber sound-absorbing non-woven fabric (91) and a second glass fiber sound-absorbing non-woven fabric (92) are respectively provided on the side of the first light steel keel layer (4) and the second light steel keel layer (7) away from the concrete wall (1).

3. The enhanced interior wall sound absorption structure according to claim 2, characterized in that: A perforated FC plate (8) is also provided on the side of the second glass fiber sound-absorbing non-woven fabric (92) away from the concrete wall (1).

4. The enhanced interior wall sound absorption structure according to claim 3 is characterized in that: The perforated FC plate (8) has a thickness of 8 mm, a size of 600 mm x 600 mm or 600 mm x 1200 mm, a perforation rate greater than or equal to 20%, and a pore size greater than or equal to 4 mm.

5. The enhanced interior wall sound absorption structure according to claim 1, characterized in that: The first sound absorbing layer (3) and the second sound absorbing layer (6) are made of centrifugal glass wool with a thickness of 100 mm.

6. The enhanced interior wall sound absorption structure according to claim 5, characterized in that: The centrifugal glass wool density of the first sound absorbing layer (3) is greater than or equal to 80 kg / m 3 The density of the centrifugal glass wool of the second sound absorbing layer (6) is greater than or equal to 32 kg / m 3 Less than 80kg / m 3 .

7. The enhanced interior wall sound absorption structure according to claim 6, characterized in that: A glass fiber cloth is also provided on the side of the centrifugal glass wool away from the concrete wall (1).

8. The enhanced interior wall sound absorption structure according to claim 1, characterized in that: The thickness of the double-layer gypsum board (5) is 12 mm, and the double-layer gypsum board (5) is spliced ​​with staggered seams.

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