Enhanced interior wall sound absorption structure
Technical Field
The utility model relates to the technical field of building structures, in particular to an enhanced inner wall sound absorption structure.
Background
Along with the high-quality development of industrial and civil buildings, the safety of the structure is emphasized, and meanwhile, the environmental protection, energy conservation and emission reduction are also emphasized. However, noise pollution in the famous column of 'four-large environmental pollution' is more ubiquitous, and has serious influence on life and physical health of people, so that in order to ensure the privacy of indoor environments, various noise influences are reduced from the outside or adjacent equipment rooms and the like, and noise reduction measures are increasingly taken on important functional places (such as a mute workshop, a large conference center, a multifunctional hall, a rest room, an office, a theatre, a star hotel and the like). Among the methods, construction of sound-absorbing wall surfaces is one of the effective means for controlling noise. The method mainly utilizes sound absorption materials or sound absorption structures to absorb and consume the incident sound energy and reduce reflected sound, thereby improving the indoor acoustic environment and achieving the purpose of reducing indoor noise.
The conventional sound-absorbing wall in the prior art generally adopts the following structure that keels are firstly arranged on the wall, fibrous sound-absorbing materials are filled in the keels, then a sound-absorbing material protective film is externally applied, and finally an orifice plate or a sound-absorbing plate is arranged. The conventional sound-absorbing wall structure has the defects that 1, the sound absorption contribution of a wall body comes from fibrous sound-absorbing materials (conventionally glass wool) filled in keels, the glass wool is easy to generate damp or fiberization in long-term use, the glass wool is damped and falls down to block to influence the sound absorption performance, 2, dust and microfiber formed after the aging of the fibrous sound-absorbing materials, scattered, pollute the indoor environment and the environment and influence the health of a human body, 3, the sound absorption effect of the integral structure is not ideal, the life and the office are influenced, the functional and comfort performance and the related standards of green buildings are not met, the service life and the sound absorption effect are reduced, 4, the wall surface decorative structure is used for the decoration of the surface of a building, and besides the decoration and beautification effects, the aesthetic requirements of people are met, the characteristics of stable structure, no deformation, no falling and the like are also required.
Disclosure of utility model
In view of the above deficiencies in the prior art, it is an object of the present utility model to provide an enhanced interior wall sound absorbing structure that solves the problems of the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a wall sound absorbing structure in enhancement mode, includes concrete wall body, cement mortar screed-coat, first acoustic layer, first light steel keel layer, double-deck gypsum board, second acoustic layer, second light steel keel layer that set gradually, first light steel keel layer with the projection of second light steel keel layer on being on a parallel with the projection plane of concrete wall body is configured to the misalignment, first light steel keel layer with second light steel keel layer is fixed respectively through first fossil fragments crab-bolt and second fossil fragments on the concrete wall body, first light steel keel layer with second light steel keel layer includes a plurality of orthogonal connection's horizontal fossil fragments and vertical fossil fragments, is in same light steel keel layer between the horizontal fossil fragments with distance between the vertical fossil fragments is 600mm.
Preferably, one side of the first light steel keel layer and one side of the second light steel keel layer, which are far away from the concrete wall, are respectively provided with a first glass fiber sound absorption non-woven fabric and a second glass fiber sound absorption non-woven fabric.
Preferably, the second glass fiber sound absorption non-woven fabric is further provided with a perforated FC plate at one side far away from the concrete wall body.
Preferably, the perforated FC plate has a thickness of 8mm, a dimension of 600mmx600mm or 600mmx1200mm, a perforation ratio of 20% or more and a pore diameter of 4mm or more.
Preferably, the materials of the first sound absorption layer and the second sound absorption layer adopt 100mm thick centrifugal glass wool.
Preferably, the centrifugal glass wool density of the first sound absorption layer is greater than or equal to 80kg/m 3, and the centrifugal glass wool density of the second sound absorption layer is greater than or equal to 32kg/m 3 and less than 80kg/m 3.
Preferably, glass fiber cloth is further arranged on one side, far away from the concrete wall, of the centrifugal glass wool.
Preferably, the thickness of the double-layer gypsum board is 12mm, and the double-layer gypsum board is spliced by staggered joints.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. The utility model effectively avoids resonance influence through staggered separation of the double-layer keel systems, and is respectively and firmly connected to form the characteristic of separating the functional layers of the sound-absorbing wall, thereby ensuring the stability of each layer of system, achieving the sound-absorbing effect, reducing noise and improving working and living environments.
2. The centrifugal glass wool is preferred in the structure because the internal fibers are fluffy and staggered, a large number of micro-pores and holes communicated with the inside and the outside exist, and the centrifugal glass wool is a typical porous sound absorption material and has good sound absorption characteristics.
3. The centrifugal glass wool is preferred in the structure because the fibers of the centrifugal glass wool are irregularly arranged, so that the density of the material is higher, better mechanical strength can be provided compared with the conventional glass wool, and the centrifugal glass wool is easier to install than the glass wool and has better corrosion resistance. Solves the problems that the glass wool sound absorption layer is easy to be affected with damp or fiberized, is affected with damp, falls down and is caked in the conventional method.
4. Two layers of sound absorption layers with different densities are adopted in the structure, the centrifugal glass wool with different densities are overlapped together, and the density of the centrifugal glass wool of the first layer of sound absorption layer is higher than that of the second layer, so that the form that the density of the sound absorption layer is gradually increased is formed, and a better sound absorption effect can be obtained.
Drawings
Fig. 1 shows a cross-sectional view of a sound absorbing wall according to an embodiment of the present utility model.
Fig. 2 shows a partial enlarged view of fig. 1.
Fig. 3 shows a schematic layout of a first light steel keel layer and a second light steel keel layer according to an embodiment of the utility model.
Legend description:
1. The concrete wall 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, a second light steel keel layer, a perforated FC board, a first glass fiber sound absorption non-woven fabric, a second glass fiber sound absorption non-woven fabric, a first keel anchor bolt, a second keel anchor bolt, wherein the first light steel keel layer, the second light steel keel layer, the perforated FC board, the second light steel keel anchor bolt and the second keel anchor bolt are sequentially arranged in sequence.
Detailed Description
In order to make the objects, technical solutions and advantages of the technical solutions of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present utility model. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.
Example 1
As shown in fig. 1-3, this embodiment provides an enhanced interior wall sound absorbing structure, including a concrete wall 1, a cement mortar leveling layer 2, a first sound absorbing layer 3, a first light steel joist layer 4, a double-layer gypsum board 5, a second sound absorbing layer 6, and a second light steel joist layer 7 which are sequentially arranged, wherein the projections of the first light steel joist layer 4 and the second light steel joist layer 7 on a projection plane parallel to the concrete wall 1 are configured to be misaligned, the first light steel joist layer 4 and the second light steel joist layer 7 are respectively fixed on the concrete wall 1 through a first joist anchor bolt 10 and a second joist anchor bolt 11, the first light steel joist layer 4 and the second light steel joist layer 7 comprise a plurality of transverse keels and vertical keels which are in orthogonal connection, and the distance between the transverse keels and the vertical keels of the same light steel joist layer is 600mm.
Working principle and use process of the embodiment
The utility model provides a sound absorbing structure of enhancement mode interior wall, light gauge steel layer adopts bilayer structure, every layer is independent fastening, ensure the firm of each layer system, the characteristics that each functional layer of sound absorbing wall separates have been formed, mutual independent work reduces resonance between layer and the layer, the projection of first light gauge steel layer 4 and second light gauge steel layer 7 on the projection face that is on a parallel with concrete wall 1 is configured to the misalignment, make first light gauge steel layer 4 and second light gauge steel layer 7 form crisscross arrangement form, this kind of arrangement form can compensate, eliminate the clearance sound transmission influence that appears when adopting single-layer arrangement form, adopt double-deck sound absorbing layer, obtain better sound absorbing effect, set up double-deck gypsum board 5 between first light gauge steel layer 4 and the second sound absorbing layer 6, improve the sound absorption of wall, fire prevention, the mothproof performance, increase the intensity of wall.
Example 2
The present embodiment is developed on the basis of the foregoing embodiment to solve the problem of how to stabilize the sound absorption layer structure, specifically, as shown in fig. 1-3, one sides of the first light steel keel layer 4 and the second light steel keel layer 7 far away from the concrete wall 1 are respectively provided with a first glass fiber sound absorption non-woven fabric 91 and a second glass fiber sound absorption non-woven fabric 92, and the glass fiber sound absorption non-woven fabric is fastened on the surface of the light steel keel, so that the defects of unstable structure, easy deformation and falling of the sound absorption layer can be solved.
Further, the perforated FC board 8 is further arranged on one side, far away from the concrete wall body 1, of the second glass fiber sound absorption non-woven fabric 92, and the perforated FC board 8 is arranged on the outermost side of the wall surface, so that the sound absorption effect of the wall surface is further improved.
Specifically, the perforated FC plate 8 has a thickness of 8mm, a dimension of 600mmx600mm or 600mmx1200mm, a perforation ratio of 20% or more, and a pore diameter of 4mm or more.
Example 3
The material of the first sound absorption layer 3 and the second sound absorption layer 6 is determined, specifically, as shown in fig. 1-3, the material of the first sound absorption layer 3 and the material of the second sound absorption layer 6 are all centrifugal glass wool with the thickness of 100mm, fibers in the centrifugal glass wool are fluffy and staggered to present irregular arrangement, a large number of micro-pores and holes communicated with the inside and the outside exist, so that the material density is higher, better mechanical strength can be provided compared with the conventional glass wool, the installation is easier than the glass wool, meanwhile, the material has better corrosion resistance, is a typical porous sound absorption material, has good sound absorption characteristics, and the problems that the glass wool sound absorption layer is easy to damp or fiberized, is damped and sagged and agglomerated in the conventional method are solved by adopting the centrifugal glass wool.
Further, the centrifugal glass wool density of the first sound absorption layer 3 is greater than or equal to 80kg/m 3, the centrifugal glass wool density of the second sound absorption layer 6 is greater than or equal to 32kg/m 3 and less than 80kg/m 3, two sound absorption layers with inconsistent densities are adopted, and the density of the first sound absorption layer 3 is greater than that of the second sound absorption layer 6, so that a form with gradually increased density is formed, and a larger sound absorption effect can be obtained.
Further, glass fiber cloth is further arranged on one side, far away from the concrete wall body 1, of the centrifugal glass cotton, and the glass fiber cloth wrapped by the centrifugal glass cotton has a certain sound transmission effect, meanwhile, has a facing effect, is convenient to cut, and also prevents or has dust and microfiber from scattering, so that pollution to indoor and outdoor environments is avoided.
Example 4
The 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, as shown in fig. 1-3, the thickness of the double-layer gypsum board 5 is 12mm, and the double-layer gypsum boards 5 are spliced by staggered joints, so that through joints are prevented from being formed between the double-layer gypsum boards 5, and the sound absorption effect is affected.
The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.