JP2009001962A - Sound-insulating structure of partition wall, and multi-partition wall with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a partition wall capable of exerting a great sound-insulating effect and realizing a comfortable habitable space. <P>SOLUTION: This sound-insulating structure of the partition wall is composed of a pair of wall bodies which are asymmetrically constituted in parallel with a vertical central surface O with a void in between. Each of the wall bodies 4A and 4B is composed of a single plate material or a plurality of mutually-joined plate materials in such a manner as to serve as a unit wall, both the front and backsides of which are boundary surfaces for separation from air, respectively. The wall bodies are set wholly different in natural frequency from one another so as to prevent the transmission of a sound between both the wall bodies. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sound insulation structure for a partition wall, and a multiple partition wall having the structure.

  Various designs have been made to improve sound insulation performance in partition walls used as doorway walls of apartment houses. For example, in a structure in which the inner surfaces of a pair of walls separated by a gap are supported by studs, a zigzag-shaped acoustic metal plate that scatters transmitted sound in an irregular direction between the stud studs ( Patent Document 1) In addition, a stud that supports only one wall body and a stud that supports only the other wall body are alternately provided in the gap so as not to transmit solid sound through the stud. (Patent Document 2).

  For the same purpose, there are sound insulation fire walls arranged in a staggered pattern as seen from above so that the ALC layers and fiber layers of the same width are exchanged front and back in the width direction so that the ALC layers do not directly contact each other. (Patent Document 3).

  Furthermore, a multiple sound insulation wall has also been proposed in which a pair of outer sound insulation plates are arranged with a second air layer disposed outside a pair of inner sound insulation plates with a first air layer (Patent Document 4).

  However, the thing of patent document 1 has few effects which only absorb scattered sound and absorbs a sound, and the thing of patent document 2 and patent document 3 only blocks a solid sound. Further, even if the sound insulation plates are piled up several times as in Patent Document 4, sound resonance is generated between the sound insulation plates, so that the sound insulation effect as expected from the sound insulation material to be used cannot be obtained.

On the other hand, the first wall material (inner wall portion) and the upper wall material (outer wall portion) of the other wall body are made of the first type material (calcium silicate plate), and the upper wall material of the one wall body and the other There has also been proposed an asymmetric structure in which the underlaying material of the wall body is formed of a second type material (slag / gypsum board), and the resonance transmission coefficient is reduced by this asymmetry (Patent Document 5). ).
JP 2003-64813 A JP-A-8-226181 JP-A-8-93094 JP-A-9-60162 JP-A-8-232375

  Although patent document 5 has shown the possibility of obtaining a sound-insulating effect by making both wall bodies into an asymmetric structure, the structure disclosed concretely is the underlining material and the upholstery material which comprise each wall body. It is just a replacement of the material types.

    If the two walls are simply constructed asymmetrically, it is sufficient to form the entire wall with one material and the other wall with another material. In addition to sound insulation, various performances such as fire resistance and waterproofing are required. Therefore, if the material of the wall that separates adjacent dwelling units is different, it may cause trouble such as a complaint from a resident on the wall side using a material with poor performance. In Patent Document 5, it is presumed that such troubles are prevented from occurring by changing the order of use of the upper wall material and the lower wall material of the opposing wall body. The frequency does not change so much, and it is difficult to greatly reduce the resonance transmission coefficient.

    The present invention provides a comfortable living space with a large sound insulation effect so that the properties of the walls facing each dwelling unit are not unequal while the physical properties of the opposing walls constituting the doorway walls of the apartment are asymmetrical. In order to realize the sound insulation structure of a partition wall composed of a pair of walls that are asymmetrically arranged in parallel to the vertical center plane with a gap therebetween, the two wall bodies have a vertical center plane that is a structural element of the wall body other than the material. It is an object of the present invention to provide a sound insulation structure characterized in that it has a different coincidence frequency by being asymmetric with respect to the above, and a composite partition wall using the sound insulation structure.

    The first means is a sound insulation structure of a partition wall made up of a pair of walls that are asymmetrically arranged parallel to the vertical center plane O with a gap therebetween. In order to prevent transmission of sound between both wall bodies, the coincidence frequency of the wall body 4A and the coincidence frequency of the wall body 4B are composed of a single board material as a boundary surface or a plurality of board materials joined together. Are configured differently.

    The “wall body” is a pair of sound insulation walls that partition the gap as an air layer. As a method of asymmetrically configuring this, for example, it is possible to combine walls of different materials such as gypsum board and cement board, and to make the spatial structure elements such as the support position and thickness of each wall asymmetric. . Each wall body desirably has a performance as a sound insulating plate.

    The “partition wall” may be a boundary wall of an apartment house, but may be a wall that separates rooms from each other in a dwelling unit.

    The reason for “different coincidence frequencies” is to prevent sound from being transmitted due to resonance vibration between both walls. For this purpose, it is desirable that at least one of the walls is about twice as large as the other. When each wall is composed of a plurality of vibrating bodies (plate material or air layer), at least the vibrating bodies (vibrating plates) facing each other are provided so as to have different coincidence frequencies. Furthermore, it is desirable to increase the vibration energy reduction effect as a whole by making the coincidence frequency different between adjacent vibrating bodies in each wall body. For example, the sound insulation effect can be enhanced by sequentially repeating a material with a high coincidence frequency and a material with a low frequency in the order of high → low → high or low → high → low. At this time, the sound insulation is further improved by providing a slight difference in frequency even between those having a high frequency or those having a low frequency.

  The second means includes the first means, and the both walls 4A and 4B have different coincidence frequencies by making the structural elements of the walls other than the material asymmetric with respect to the vertical center plane O. It is configured to have.

    “Structural elements of walls other than materials” refers to spatial factors such as wall material thickness and shape, wall support position, strength of support force against the wall (tightening strength with studs) and orientation An element that becomes a determinant of coincidence frequency, such as a dynamic element.

    “Asymmetric” means not spatially symmetric with respect to the center plane (symmetry plane).

    The third means includes the second means, and the wall bodies 4A and 4B are asymmetric in thickness.

    Making the thickness of both walls asymmetric, in other words, making a difference in the thickness of both walls, means changing the mass of both walls as a vibrator, and therefore both walls. The coincidence frequency will be different.

  When changing the thicknesses of both wall bodies, the ratio of the thicknesses of the wall bodies made of the same material is preferably at least 1: 2 or more, more preferably about 1: 3.5.

  In addition, both the said wall bodies can be comprised so that a fireproof material may be formed as a main material, and a fireproof measure may be further given to the thin wall body, and it may have a substantially equal fireproof performance as a whole.

  The fourth means includes the second means, and both the wall bodies 4A and 4B are supported by the support means 2, 2A and 2B, respectively, and their support positions are asymmetric with respect to the vertical center plane O. And it arrange | positions so that it may become uneven in the width direction between both wall bodies.

  Changing the support positions of both wall bodies means changing the pressing force so that both wall bodies do not vibrate, and therefore the coincidence frequencies of both wall bodies are different.

    As the “supporting means”, for example, studs (intermediate pillars) arranged at intervals in the widthwise direction of the wall body are desirable. However, for example, instead of studs, it is possible to place a plurality of horizontal support bars horizontally at intervals in the vertical width direction, or to fix the upper and lower ends of each wall body to the floor or ceiling with a fixture. .

    In addition, as a method of making the support position asymmetric, when the wall body is intermittently supported in the width direction (horizontal width direction or vertical width direction) with a stud or the like, the interval between the support points is changed between the wall bodies. can do. The ratio of the support interval of the other wall body to the support interval of the one wall body in the width direction is preferably about 1: 1.5.

  The fifth means includes the second means, and the both wall bodies 4A and 4B have an asymmetric shape with respect to the vertical center plane O, such as a flat plate and a non-flat plate.

  The reason why the shape is asymmetric is that the rigidity of the wall body changes and the coincidence frequency differs. Examples of non-flat plates include corrugated plates.

  The sixth means is a multiple partition wall, which is a triple wall having a pair of outer wall portions 28, 28 including a second air layer on both sides of a hollow intermediate wall 20 including the first air layer 6. The sound insulation structure of the first to fifth means is adopted in the wall portion between the second air layers 8 and 8.

  This means is configured such that the asymmetric sound insulation structure does not appear directly outside. This is because, when the partition wall of the present invention is used as a boundary wall of an apartment house, appearance is poor if the thickness and shape of the walls on both sides of each dwelling unit are different.

  The “wall portion between the second air layers” is a portion composed of a pair of inner walls and an intermediate wall when double walls including the second air layer are provided on both sides of the intermediate wall. Meaning. This will be described later.

  Seventh means includes the seventh means, and the intermediate wall 20 is a common wall that is a boundary wall of an apartment house, and wall portions on both sides of the common wall including the outer wall portions 28 and 28. Is a special wall installed in each dwelling unit.

  In this means, since the common wall cannot be driven with nails or screws in order to ensure fire resistance and sound insulation performance, it is possible to drive nails into dedicated walls provided on both sides of the shared wall.

  “Shared wall” refers to a wall that constitutes a shared part of an apartment house.

  “Dedicated wall” refers to a wall installed in each dwelling unit of an apartment house.

  According to the first aspect of the invention, each pair of wall bodies constituting the partition wall is formed so as to have a different coincidence frequency. The reduction rate of the resonance absorption coefficient is larger than that obtained by simply replacing the material, and the sound insulation effect is enhanced.

  According to the invention relating to the second means, each wall body is asymmetric with respect to the structural elements other than the material, so that the various performances of each wall body such as fire resistance, heat insulation, and waterproofing are set to be substantially the same. Is easy.

  According to the invention relating to the third means, since both the wall bodies 4A and 4B are asymmetric in thickness, by using the same kind of material as the main material of each wall body, fire resistance, heat insulation, etc. It is possible to obtain at least the same function with respect to various performances. Further, if necessary, the function of the thin wall body can be complemented by selecting a wall finishing material or the like.

  According to the invention relating to the fourth means, since the support location of each wall body 4A, 4B is asymmetric, there is little influence on the fire resistance performance and heat insulation performance of each wall body, and the living environment of each dwelling unit Can provide approximately equal quality.

  According to the fifth aspect of the invention, the wall bodies 4A and 4B are asymmetrical with respect to the vertical center plane O, such as flat and non-flat, so that the fire resistance and heat insulation performance of each wall can be reduced. It is possible to provide almost equal quality for the living environment of each dwelling unit.

  According to the sixth aspect of the invention, the triple wall is provided with the pair of outer wall portions 28 and 28 including the second air layer on both sides of the hollow intermediate wall 20 including the first air layer 6. And since the asymmetrical sound insulation structure of the 1st means thru | or the 5th means was employ | adopted for the wall part between the 2nd air layers 8 and 8, it can prevent that asymmetric structure appears on the front side.

According to the seventh aspect of the invention, the following effects are obtained.
○ Because the intermediate wall 20 is a common wall that is the boundary wall of the housing complex, and the wall portions on both sides of the common wall including the outer wall portions 28 and 28 are dedicated walls installed in each dwelling unit. Objects can be attached by driving nails and screws into a special wall.
○ Similarly, these facilities can be arranged functionally by embedding electric switches, outlets, water pipes, etc. in the dedicated wall.
○ Even during renewal, equipment and handrails can be installed on the dedicated wall, facilitating renewal work.

  1 to 3 show a dry partition wall according to the present invention. The partition wall includes a plurality of studs 2A and 2B, a pair of wall bodies 4A and 4B, and a sound insulating material 12. A conventionally well-known part is demonstrated first among the structures of this partition wall.

  Each stud 2A, 2B stands from the floor F to the ceiling C as shown in FIG. Further, as shown in FIG. 2, the studs 2A are displaced toward the front of the partition wall (upward in FIG. 2), and the studs 2B are displaced toward the back of the partition wall (lower in FIG. 2). It is installed at equal intervals in the width direction of the wall. In the example of illustration, the space | interval of each stud 2A ... and the space | interval of stud 2B ... are made the same. The illustrated stud is formed in a U-shaped cross section, but the shape can be changed as appropriate.

  The walls 4A and 4B are arranged in parallel to the vertical center plane O with the air layer 6 therebetween. These two walls are supported by attaching the studs 2A to the inner surface of the wall 4A and the studs 2B to the wall 4B, respectively, so that no solid sound is transmitted between the walls. ing. An acoustic insulating material can be interposed between the studs 2A and 2B and the wall bodies 4A and 4B.

  The sound insulating material 12 is filled between both wall bodies 4A and 4B. This sound insulating material can be formed of, for example, glass wool.

In the present invention, the structure is asymmetric with respect to the vertical center plane O by making a difference in the thickness of the wall bodies 4A and 4B. In order to achieve a sound insulation effect with a TLD (acoustic transmission loss) of about 34, when the thickness of the gap layer is 40 mm, the thickness of the first wall body 4A is 15 mm, and the second wall body 4B The thickness can be about 9.5 m. Further, the thickness of each wall plate can be made thicker, for example, the thickness of the first wall body 4A can be 42 mm, and the thickness of the second wall body 4B can be about 12 mm.
In the illustrated example, the thicker wall body 4 </ b> A is formed of a lower material 14 and an upper material 16. These underlay material 6 and upholstery material 8 can each be formed of gypsum board.

  In the above configuration, since the coincidence frequencies of the wall body 4A and the wall body 4B constituting the partition wall are different, a sound wave that matches the coincidence frequency of one of the wall bodies 4A and 4B is shown in FIG. In this way, the light passes through the one wall body 4A without being attenuated, but is greatly attenuated when transmitted through the other wall body 4B. Similarly, the sound wave that matches the coincidence frequency of the other wall body 4B is shown in FIG. ), The light passes through the other wall body 4B without being attenuated, but is greatly attenuated when it passes through the one wall body 4A. On the other hand, in the case of a partition wall where the coincidence frequencies of both walls are the same, as shown in FIG. 8, the sound wave that matches the coincidence frequency of both walls is transmitted without being attenuated by either wall. End up. Based on the above consideration, if the difference in coincidence frequency between the walls 4A and 4B is set sufficiently large, the resonance transmission of sound between these walls can be suppressed.

  Hereinafter, other embodiments of the present invention will be described. In these embodiments, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, instead of the thickness of the wall bodies 4A and 4B, the support positions of both wall bodies are changed. That, in which the stud 2A ... distance L _a of supporting the wall 4A, and shorter than the stud 2B ... distance L _b of supporting the wall 4B. For example the stud 2A ... distance L _a of the wall 4A of about 300 mm, may be a stud 2B ... distance L _b of the wall 4B of about 450 mm.

  FIG. 5 shows a third embodiment of the present invention. In this embodiment, the first wall body 4A is formed in a corrugated plate shape, and the second wall body 4B is formed in a flat plate shape.

  FIG. 6 shows a multiple partition wall according to the fourth embodiment of the present invention. In this embodiment, auxiliary walls 24 and 24 that are dedicated portions II in each dwelling unit are installed on both sides of the intermediate wall 20 that is a common portion I of the apartment house. The intermediate wall 20 is formed by a pair of side walls 22, 22 that separate the first air layer 6, and the illustrated side wall 22 is formed by a lower material 16 and an upper material 14. Each auxiliary wall 24 joins an inner wall portion 26 and an outer weight portion 28 that separate the second air layer 8 via a plurality of columns 30. Each side wall 22 of the intermediate wall 20 and the corresponding inner wall 26 of the auxiliary wall 24 constitute wall bodies 4A and 4B, respectively, and the wall portion between the second air layers 8 and 8 is the first wall. From a vertical center plane O according to any one of the third embodiment. In the illustrated example, the structure of FIG. 2 is adopted, but the structure of FIG. 1 or 3 may be adopted. An object can be fixed by driving a nail 30 into the auxiliary wall 22. Further, 32 is an electrical circuit outlet built into the auxiliary wall 22, and 34 is a handrail installed outside the auxiliary wall.

  FIG. 7 is an example in which the fourth embodiment is configured as a multiple partition wall of a non-shared part of an apartment house. The intermediate wall 20 is formed by stacking two 21 mm thick gypsum boards into one side wall 22 and joining the other side wall 22, which is a 9.5 mm thick gypsum board, with a stud 2 having a thickness of 50 mm. Is. Each stud 2 is joined to the inner surfaces of both side walls 22, 22. The inner wall portion 26 of the auxiliary wall 24 is formed of a glass wool plate having a thickness of 15 mm.

FIG. 3 is a longitudinal sectional view of a partition wall according to the first embodiment of the present invention. It is a cross-sectional view of the partition wall of FIG. It is explanatory drawing of the sound insulation effect of the partition wall of FIG. It is a cross-sectional view of the partition wall which concerns on the 2nd Embodiment of this invention. It is a cross-sectional view of the partition wall which concerns on the 3rd Embodiment of this invention. It is a cross-sectional view of the multiple partition wall which concerns on the 4th Embodiment of this invention. It is a cross-sectional view of a multiple partition wall according to an embodiment of the present invention. It is explanatory drawing of the sound insulation effect of a conventionally well-known partition wall.

Explanation of symbols

2, 2A, 2B ... support means (stud) 4A, 4B ... wall 6 ... (first) air layer 8 ... second air layer 12 ... sound insulation material 14 ... underlay material 16 ... upholstery material
20 ... intermediate wall 22 ... side wall 24 ... auxiliary wall 26 ... inner wall 28 ... outer wall 30 ... nails
32 ... Outlet 34 ... Handrail F ... Floor C ... Ceiling O ... Vertical center plane

Claims (7)

    In the sound insulation structure of the partition wall composed of a pair of walls that are asymmetrically arranged parallel to the vertical center plane O with a gap therebetween, each of the walls 4A and 4B has a single surface with both front and back surfaces as boundary surfaces with air. In order to prevent transmission of sound between the two wall bodies, the coincidence frequency of the wall body 4A and the coincidence frequency of the wall body 4B are different from each other. A sound insulation structure for a partition wall.   The both wall bodies 4A, 4B are configured to have different coincidence frequencies by making the structural elements of the wall bodies other than the material asymmetric with respect to the vertical center plane O. Sound insulation structure of the partition wall.   The sound insulation structure for a partition wall according to claim 2, wherein the thicknesses of the two wall bodies 4A, 4B are asymmetrical.   The two wall bodies 4A and 4B are supported by the supporting means 2, 2A and 2B, respectively, and their support positions are asymmetric with respect to the vertical center plane O and are not uniform in the width direction between the two wall bodies. The sound insulation structure for a partition wall according to claim 2, wherein the sound insulation structure is arranged.   The sound insulation structure for a partition wall according to claim 2, wherein the two wall bodies (4A, 4B) are asymmetric with respect to the vertical center plane (O), such as a flat plate and a non-flat plate.   A triple wall provided with a pair of outer wall portions 28, 28 including a second air layer on both sides of a hollow intermediate wall 20 including the first air layer 6, and between the second air layers 8, 8. A multiple partition wall characterized by adopting the sound insulation structure according to claim 1 to the wall portion.   The intermediate wall 20 is a common wall that is a boundary wall of an apartment house, and the wall portions on both sides of the common wall including the outer wall portions 28 and 28 are dedicated walls installed in each dwelling unit. The multiple partition wall according to claim 6.

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