JP2002213038A - Partitioning wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the sound isolating performance of a partitioning wall in a low-frequency band of 125 Hz or below in a lightweight partitioning wall structure by a dry method having a structure fitted with building interior board materials forming a wall face to upper and lower runners. SOLUTION: This partitioning wall structure W by a dry method has the structure fitted with building interior board materials 10 and 12 forming the wall face to upper and lower runners 2 and 3, and it is provided with the lower board 10 and the upper board 12 forming the building interior board materials, a reinforcing board 11 inserted between the boards 10 and 12, and a first inorganic adhesive 20. The reinforcing board 11 is arranged at an interval in the wall core direction so as to form a closed space 7 to diffusively arrange the hardened lumps of the first adhesive. A second inorganic adhesive 30 having the same quality as the first adhesive is applied to the back face of the lower board from the side of the hollow section 6 of a partitioning wall at the corresponding position to the closed space. Hardened lumps of the second adhesive are diffusively arranged in the height center region S of the lower board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition wall structure of a dry construction method, and more particularly to a partition wall structure capable of improving sound insulation performance against low frequency band noise.

[0002]

2. Description of the Related Art As a partition wall of a building or a work, a so-called light-weight steel-frame partition wall having a so-called frame structure in which a building interior board material such as a gypsum board or a calcium silicate plate is attached to a stud of a steel stud is widely used. Has been offered to. In this type of partition wall structure, steel studs are arranged at predetermined intervals along a wall core, and upper and lower ends of the steel studs are fixed to a ceiling runner and a floor runner, respectively. On the studs of the steel studs, a building interior board material is fixed, and a wall surface of the interior board material is formed.

As another type of partition wall structure, a non-stud structure or a studless structure partition wall in which a stud of a steel stud is omitted is known in order to improve the sound insulation performance and workability of the partition wall. For example, Tokiko Sho 62─97
The partition disclosed in Japanese Patent Publication No. 01 is substantially composed of an interior board material of each wall fixed to the ceiling runner and the floor runner, and a core material disposed in a hollow portion of the partition. The core material that functions as a kind of stud is bonded to the board material via an inorganic adhesive, and a gap is formed between the board material and the core material. Further, as another type of non-stud structure partitioning wall, for example, as disclosed in Japanese Patent Application Laid-Open Nos. 7-324410 and 9-4096, reinforcing ribs extending in the vertical direction may be used as a laminate of board pieces or the like. Is formed integrally with an interior board material in advance, and the board material is attached to a ceiling runner and a floor runner.

The present inventors have developed a partition wall having a dry construction method and a studless structure, in which a reinforcing plate and an adhesive mass are interposed between a lower board and an upper board. Already put into practical use
No. 3058). The width of the reinforcing plate is set to about 1/2 of the width of the lower and upper boards, and each reinforcing plate is arranged so as to straddle the vertical joint of the lower and upper boards. A closed space is formed between the spaced reinforcing plates, and a large number of adhesive masses for joining the lower board and the upper board are dispersedly arranged in the closed space. A partition wall having such a structure on both sides of the upper and lower runners not only exhibits relatively high wall rigidity, but also exhibits relatively good sound insulation performance as shown in the diagram of FIG.

[0005]

FIG. 12 is a diagram showing actual measurement results of sound transmission loss for a partition wall of this type. In FIG. 12, the measured values of the partition wall are shown by solid lines, and the current sound insulation standard (sound insulation performance designation number: D30)
To D55) are indicated by broken lines. The actual measurement value indicates a high level of sound insulation performance exceeding the reference line of the sound insulation designation D55 as a whole, and is recognized as a partition wall exhibiting the sound insulation performance of D55 under the current sound insulation standard.

However, the measured value of the sound transmission loss is
Frequency band to be evaluated for sound insulation performance, that is, 125H
In a frequency band equal to or higher than z, a relatively good numerical value is shown, but in a frequency band equal to or lower than 125 Hz, as indicated by a symbol A in FIG. There is a concern that sound insulation performance may be reduced.

[0007] Such noise in the low frequency band generally has a characteristic that it is very difficult to prevent sound insulation by a partition wall of a dry method, and conventionally, noise is prevented by a wall having a relatively heavy structure such as a reinforced concrete wall. In recent years, there have been many high-rise buildings, such as high-rise apartment buildings and high-rise hotel buildings, in which each dwelling unit or each guest room has to be divided by lightweight partition walls of dry construction method. As a result of the construction, there is a need to improve the sound insulation performance of the partition wall in a low frequency band of 125 Hz or less even with a lightweight partition wall of a dry method.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a dry-type light-weight partition wall having a structure in which a building interior board material forming a wall surface is attached to upper and lower runners. In construction, 125H
An object of the present invention is to provide a partition wall structure capable of improving the sound insulation performance of the partition wall in a low frequency band of z or less.

[0009]

In order to achieve the above-mentioned object, the partition wall structure (W) of the present invention comprises a building interior board material (10, 12) forming a wall and upper and lower runners (2, 2). 3)
The partition wall is a sub-board (1
0) and an overlay board (12), a reinforcing board (11) and a first inorganic adhesive (20) interposed between the boards.
The reinforcing boards are spaced apart from each other in the direction of the wall core so as to form a closed space (7) in which the cured mass of the first adhesive is to be dispersed. A second inorganic adhesive material (30) of the same quality as the first adhesive material is applied to the back surface of the underlining board from the hollow portion (6) side of the partition wall at a position corresponding to the closed space;
The cured mass of the second adhesive is located in the center area of the height of the underlay board.
(S) is distributed.

According to the above configuration of the present invention, the reinforcing board (11) having a relatively small width is provided with the lower board (10) and the upper board.
Interposed between (12), an enclosed space (7) is defined between the baseboard and the topboard. The cured mass of the first adhesive material (20) is scattered in the enclosed space, and the cured mass of the second adhesive material (30) adheres to the back surface of the underlining board from the side of the hollow portion (6),
They are distributed in a predetermined height area (S). The reinforcing board and the first adhesive cured mass increase the rigidity and mass of the wall surface, not only improve the sound insulation performance of the wall surface as a whole, but also change the surface density or the mass distribution of the wall surface and reduce the resonance effect of the wall surface. The noise insulation performance of the partition wall (W) against noise propagation in the frequency band of 125 Hz or more is suppressed. On the other hand, the second adhesive
The hardened mass of (30) adheres to the mid-height region (S) of the underlaying board on the back side of the closed space, and locally increases the areal density or mass distribution of the underlaying board in the mid-height region.
As a result, the resonance effect in the closed space portion is suppressed, the sound transmission loss in the frequency band of 125 Hz or less is improved, and a decrease in the sound insulation performance with respect to the noise in the low frequency band is effectively prevented.

[0011] From another viewpoint, the partition wall structure according to the present invention.
(W) is a first board piece (17) having a small width and spaced apart in the wall core direction, a second board piece (18) having a width smaller than the first board piece, and a second board piece (18). A building interior board material (10, 12) integrated with the board piece. The second board piece is fixed to the front surface half of the first board piece, and an open space (8) in which the inorganic adhesive (20) can be dispersedly arranged is provided with the remaining surface of the first board piece and the interior board material. Is formed between
The cured mass of adhesive bonds the first board piece and the interior board material together. The first board piece has a width equal to or less than half of the interior board material, and the second board piece has one width of the interior board material.
/ 4 or less. First and second board pieces (17, 18)
And the interior board material (10, 12) forms an open space (8) through which the cured mass of the adhesive (20) can be inserted, increasing the rigidity and mass of the wall surface formed by the interior board material, While improving the sound insulation performance as a whole, changing the surface density of the wall,
Due to the difference in the coincidence effect of each material, the resonance phenomenon of the wall surface is suppressed, and the sound insulation performance of the partition wall (W) against noise propagation in a frequency band of 125 Hz or more is effectively improved.
The open space (8) with the cured adhesive mass (20) interposed is open on one side to the hollow part (6), effectively reducing the sound insulation performance due to the resonance effect in the low frequency band of 125 Hz or less. To prevent.

From still another viewpoint, the partition wall structure of the present invention
In (W), an inorganic adhesive (30) is applied to the back surface of the interior board material (10, 12) from the hollow portion (6) side of the partition wall in the area between the first board pieces (17). The hardened mass of the adhesive (30) is dispersed and arranged in the height center region of the interior board material.
The application area of the adhesive is limited within a predetermined dimension (S) in a vertical direction from the height center (M) of the partition wall, and the dimension (S) is
It is set to 1/4 to 1/6 of the total height (H) of the interior board material. According to such a configuration, the cured adhesive mass (30) attached to the intermediate height region of the interior board material locally increases the mass distribution of the interior board material in the intermediate height region, and in the low frequency band. Effectively regulate the wall resonance effect.
For this reason, the sound transmission loss in the frequency band of 125 Hz or less is improved, so that a decrease in the sound insulation performance of the partition wall in the low frequency band is effectively prevented.

[0013]

According to a preferred embodiment of the present invention, the inorganic adhesives (30) in the center region of the height are vertically arranged in two or three rows.

In a further preferred embodiment of the invention, the lower board (10) and the upper board (12) have substantially the same width, the width of said reinforcing board (11) being lower and upper. It is set to half the width of the upholstery board, and the vertical joints of the lower and upper boards are positioned on the reinforcement board.

According to another preferred embodiment of the present invention, the first board piece (17) is made of a cut piece obtained by cutting the interior board material (10, 12) into a half or less width. Board pieces
(18) consists of a cut piece obtained by cutting the interior board material to a width of 1/4 or less.

Preferably, the interior board material (10, 12)
The reinforcing board (11), the first board piece (17) and the second board piece (18) are made of a gypsum board having a thickness of 12.5 to 15 mm or a piece thereof, and are made of an inorganic adhesive (20, 30). Consists of a gypsum-based adhesive obtained by kneading an adhesive material including gypsum powder, lightweight aggregate and an adhesive with water. As the gypsum-based adhesive, GL bond or direct bond (trade name) can be suitably used. If desired, a sound absorbing material (5) such as a glass wool mat, a glass wool molded plate or a rock wool sound absorbing material is inserted or filled into the hollow portion (6) of the partition wall.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a partition wall according to the embodiment, and FIG.
3 is a sectional view taken along line AA of the partition wall shown in FIG. FIG.
FIG. 3 is an exploded perspective view schematically showing a structure of a partition wall shown in FIGS. 1 and 2.

The partition wall W shown in FIGS. 1 to 3 includes a floor runner 2 and a ceiling runner 3 made of lightweight steel frames. The floor runner 2 is disposed on a floor base F such as a concrete slab or a floor mortar base, and extends on the floor base F in a substantially horizontal and wall-center direction. The floor runner 2 is fixed to the floor base F by a fixing tool (not shown) such as a driving pin arranged at an interval of about 900 mm. Ceiling runner 3
Is fixed to a ceiling substrate C such as a lightweight steel ceiling substrate or an upper concrete slab by fixing means (not shown) such as welding, tapping screws or anchors. The ceiling runner 3 extends substantially horizontally and in the direction of the center of the wall opposite to the floor runner 2.

The upper end and lower end of the underlay board 10
The underboard board 1 which is fixed to the floor runner 2 and the ceiling runner 3 by a locking tool 15 such as a tapping screw,
0 side edge parts are locking tools such as staples (not shown)
Are interconnected and connected by A hollow portion 6 is defined inside the partition wall W, and the heat insulating / sound absorbing material 5 is
Is placed within. The underlining board 10 has, for example, a width of 60.
It is made of a gypsum board having a thickness of 0 to 1200 mm and a thickness of 12.5 to 15 mm.
It consists of a glass wool mat or glass wool molded plate of about 0 mm.

A reinforcing board 11 coated with a vinyl acetate-based adhesive on one side (back side) is fastened to the underlaying board 10 by a fastener (not shown) such as a staple. The reinforcement board 11 is a gypsum board cut piece obtained by cutting a gypsum board of the same quality as the underlay board 10 into a half width, and has dimensions of, for example, 300 to 600 mm in width and 12.5 to 15 mm in thickness. And substantially the same height dimension. The reinforcing board 11 is positioned so that its center in the width direction is substantially aligned with the seam (vertical joint) of the lower board 10, and is integrally laminated on the lower board 10 so as to straddle the vertical joint of the lower board 10. .

A gypsum-based adhesive 20 is spotted on the underlay board 10 in a dumpling shape. The gypsum-based adhesive 20 is made of a viscous material obtained by kneading an adhesive material including gypsum powder, lightweight aggregate and an adhesive with water. Each dumpling of the gypsum-based adhesive 20 has a size of about 50 mm × 50 mm in a front view, and has a size of about 25 mm.
It has a height of about 30 mm. Gypsum adhesive 20
Are two to three rows (two rows in this example) on the underlay board 10 with a mutual interval of about 150 to 300 mm in the vertical direction.
It is arranged in.

An overlay board 12 having a back surface coated with an adhesive such as a vinyl acetate adhesive is fastened to the reinforcing board 11 by a fastener such as staples and laminated on the reinforcing board 11. The overlay board 12 has, for example, a width of 600 to
It is made of a gypsum board having a thickness of 1200 mm and a thickness of 12.5 to 15 mm, and an interior finishing material 13 such as a cloth material or an interior finishing paint is finish-finished or painted on the surface of the overlay board 12. If desired, finish the interior finish 13 on one side (front)
May be used as the overlay board 12.

The joints (vertical joints) of the upper board 12 are as follows:
It is positioned substantially at the center in the width direction of the reinforcing board 11, and the back surface of the central portion of the overlay board 12 is bonded to the gypsum-based adhesive 20 while crushing the gypsum-based adhesive 20 flat. The lower board 10 and the upper board 12 are made of a gypsum-based adhesive 20.
By drying and curing. A closed space 7 is defined between the lower board 10 and the upper board 12, and the flattened and hardened gypsum-based adhesive 20 forms a relatively high specific gravity adhesive mass scattered in the closed space 7. I do.

Gypsum adhesive 3 of the same quality as gypsum adhesive 20
0 is spotted on the underlay board 10 in a dumpling shape from the side of the hollow portion 16. Each dumpling of the gypsum-based adhesive 30 is about 2
It has a mounting height of about 5 to 50 mm and a front view dimension of about 50 mm × 50 mm, and has two to three rows (3 in this example) on the underlaying board 10 with an interval of about 100 to 300 mm in the vertical direction. Column). The application area of the gypsum-based adhesive 30 is limited to a vertically symmetric range of the dimension S from the height center M of the underlay board 10, and the dimension S is set to 1/4 to 1/6 of the total height H of the partition wall W. Is set.

According to the partition wall W configured as described above, the reinforcing board 11 having a relatively small width can be replaced with the underlining board 10.
And between the upper board 12 and the closed space 7
It is formed between the lower board 10 and the upper board 12. The hardened lumps of the adhesive 20 are scattered in the closed space 7, and the hardened lumps of the adhesive 30 are attached to the hollow portion 6 side of the underlay board 10 and are scattered in a predetermined height region S. The hardened mass of the reinforcing board 11 and the adhesive 20 increases the rigidity and weight of the wall surface formed by the boards 10 and 12, improves the sound insulation performance of the wall surface as a whole, and changes the surface density of the wall surface. The resonance effect of the wall surface in a wide frequency band,
It works to effectively shield noise in the frequency band of not less than Hz. On the other hand, the hardened mass of the adhesive 30 adheres to the intermediate height region S of the underlay board 10 on the back side of the closed space 7 and increases the weight distribution of the underboard 10 in the intermediate height region.

As a result of the actual measurement of the sound transmission loss of the partition wall W, as shown by the broken line B in FIG. 12, the sound transmission loss in the frequency band of 125 Hz or less is improved, and the sound insulation performance against the noise in the low frequency band is effectively reduced. Turned out to be prevented. This is because, in the conventional configuration, the resonance phenomenon occurs in a frequency band of 125 Hz or less, whereas the hardened mass of the adhesive 30 located on the back side of the closed space 7 has In the area of 10,
This is probably because the resonance effect in the low frequency band was effectively regulated.

FIGS. 4 to 6 are a vertical sectional view, a sectional view taken along line BB and an exploded perspective view of a partition wall according to a second embodiment of the present invention. 4 to 6, components that are substantially the same as or equivalent to the components of the first embodiment are denoted by the same reference numerals.

In the partition wall W of this embodiment, the narrow first board pieces 17 are connected to the floor runner 2 and the ceiling runner 3.
Attached to The first board piece 17 has, for example, a width 12
It is a strip of gypsum board in the form of a strip cut to a width of 0 to 400 mm and has a thickness of about 12.5 to 15 mm. The upper end and the lower end of the first board piece 17 are fixed to the floor runner 2 and the ceiling runner 3 by the locking member 15 and extend vertically between the upper and lower runners 2, 3.

The second board piece 18 is fixed to the outside of the first board piece 17. The second board piece 18 has, for example, a width of 6
It is made of a strip of gypsum board in the form of a strip cut to a width of 0 to 200 mm, and has a width approximately half that of the first board piece 17. A second board piece 18 coated with a vinyl acetate-based adhesive on one side (back side) is fastened to the first board piece 17 by a fastener such as a staple, and the second board piece 18 is formed of the first board piece 17. Glued integrally to the half.

On the remaining portion of the first board piece 17, a gypsum-based adhesive material 20 similar to that of the first embodiment is vertically arranged by 150 to 3 times.
They are dotted in a line with a mutual interval of about 00 mm. Each dumpling of the gypsum-based adhesive 20 is approximately 50 mm × 50 in front view.
It has a dimension of about mm and a laying height of about 25 to 30 mm.

The underlaying board 10 is fixed to the second board piece 18. The underlining board 10 has, for example, a width of 600 to
It consists of a gypsum board with a thickness of 1200 mm and a thickness of 12.5 to 15 mm. The underlining board 10 having an adhesive such as a vinyl acetate adhesive applied to the back surface is fastened to the second board piece 18 by a fastener such as staples. The joint (vertical joint) of the lower board 10 is positioned at the center in the width direction of the second board piece 18. The back surface of the underlining board 10 adheres to the gypsum-based adhesive 20 while crushing the gypsum-based adhesive 20 flat. The underlay board 10 and the first board piece 17 are integrated by drying and curing the gypsum-based adhesive 20. An open space 8 having an open side is formed between the first board piece 17 and the underlay board 10, and the flattened and hardened gypsum-based adhesive 20 is bonded to the relatively high specific gravity, which is scattered in the open space 8. Form a mass.

An upper board 12 having an adhesive such as a vinyl acetate adhesive applied to the back surface is fastened to the lower board 10 by a fastener such as staples.
0. The overlay board 12 has, for example, a width of 6
It consists of a gypsum board with a thickness of 00 to 1200 mm and a thickness of 12.5 to 15 mm. An interior finishing material 13 such as a cloth material or interior finishing paint is applied to the surface of the overlay board 12.
If desired, a decorative gypsum board or the like in which the interior finish 13 has been previously applied to one surface (surface) may be used as the overlay board 12.

Gypsum adhesive 3 of the same quality as gypsum adhesive 20
0 is spotted in a dumpling shape on the back surface of the underlining board 12 from the side of the hollow portion 6. Each dumpling of the gypsum-based adhesive 30 is
About 25-50mm height and about 50mm x 50mm
With a frontal dimension of about 100 to 300 mm in the vertical direction
2 to 3 on the underlaying board 10 at a distance from each other
They are arranged in columns (two columns in this example). The area where the gypsum-based adhesive 30 is applied is a size S from the height center M of the underlay board 10.
And the dimension S is set to １ ／ to ６ of the total height H of the partition wall W.

According to the partition wall W configured as described above, the first board piece 17, the second board piece 18 and the underlay board 10 form the open space 8 through which the cured mass of the adhesive 20 can be inserted. , The cured mass of the adhesive 30 is
Is attached to the side surface of the hollow portion of the underlaying board 10 located at a predetermined height range S, and is dispersed in a predetermined height range S. First board piece 17,
The hardened mass of the second board piece 18 and the adhesive 20
In addition to increasing the rigidity and mass of the wall formed by 0 and 12 and improving the sound insulation performance of the wall as a whole, changing the surface density of the wall, suppressing the resonance phenomenon of the wall in a general frequency band, 125 Hz Noise in the above frequency bands is effectively shielded. In addition, the open space 8 in which the cured mass of the adhesive 20 is interposed has one side open to the hollow portion 6, thereby preventing a resonance operation in a low frequency band. Further, the hardened mass of the adhesive 30 adheres to the intermediate height region S of the underlay board 10 located on the back side of the open space 8, and
Is increased in the intermediate height region S, and the resonance action in the low frequency band is effectively regulated. For this reason, the partition wall W of the present example also has a frequency of 125 Hz as shown by the broken line B in FIG.
The sound transmission loss in the following frequency bands is improved, and the sound insulation performance of the partition wall W is effectively prevented from lowering against noise in the low frequency band.

7 and 8 are a vertical sectional view, a sectional view taken along the line CC, and a partially cutaway perspective view of a partition wall according to a third embodiment of the present invention. 7 and FIG. 8, the first and second
Components that are substantially the same as or equivalent to the components of the embodiment are denoted by the same reference numerals.

In the partition wall structure W of the present embodiment, the lower board 10 is attached to the floor runner 2 and the ceiling runner 3 by the locking member 15, and the upper board 12 is
It is overlaid on the indoor side of the underlaying board 10 by an adhesive and a fastener. An interior finishing material 13 is further provided on the indoor side surface of the overlay board 12. The interior finishing material 13 is made of a board building material such as a gypsum board or a decorative gypsum board. As the interior finish 13, a cloth material, interior finish paint, or the like may be used.

When the gypsum-based adhesive material 20 is vertically
On the back surface of the underboard board 10 (the inner surface of the partition wall W), the second board piece 18 is fixed to the inner surface of the underboard board 10 while being dotted in a line on the back surface (the inner surface of the partition wall W) with a mutual interval of about 300 mm. A strip-shaped first board piece 17 having a width approximately twice that of the second board piece 18 is fastened to the inner surface of the first board piece 18 by a fastener such as staples and an adhesive. The half of the first board piece 17 is
And the other half of the second board piece 18 crushes the gypsum-based adhesive 20 in a flat manner.
Glue to By drying and curing the gypsum-based adhesive 20, the underlaying board 10 and the first board piece 17 are integrated. First
An open space 8 having one side open is formed between the board piece 17 and the underlay board 10, and the flattened and hardened gypsum-based adhesive material 20 is formed of a relatively high specific gravity adhesive mass scattered in the open space 8. To form

When the width L1 of the underlaying board 10 is 910 mm, the first and second board pieces 17 and 18 have L2 = 1.
They are arranged at predetermined intervals set to about 50 to 760 mm in the direction of the center of the wall. The third board piece 91 is the board piece 1
At an intermediate position between 7 and 18, the reinforcing metal 9 is fixed to the inner side surface of the underlaying board 10, and the reinforcing metal 9 is fixed to the third board piece 91 by a fastener 92 such as a screw.

The board pieces 17, 18, 91 are made of a piece of board building material such as gypsum board and have a thickness of about 10 to 15 mm. The reinforcing metal member 9 is made of a lightweight steel member having a width and a depth of about 20 to 75 mm. Board piece 1
7, 18, 91 and the lower and upper ends of the reinforcing hardware 9 are shown in FIG.
As shown in the figure, the position is set at a position separated by a predetermined distance E from the floor F and the ceiling base C, and the distance E is set in a range of 50 to 150 mm, for example, 75 mm.

According to the partition wall structure W of this embodiment, the board pieces 17 and 18 and the underlay board 10 form an open space 8 through which a cured mass of the adhesive 20 can be inserted, and the reinforcing metal 9 and the board piece 91 is an open space 8 spaced apart in the direction of the wall center.
Placed between. Board pieces 17, 18 and adhesive 20
The hardened mass increases the rigidity and mass of the wall formed by the boards 10 and 12, improves the sound insulation performance of the wall as a whole, changes the surface density of the wall, and resonates the wall in a general frequency band. The phenomenon is suppressed, and noise in a frequency band of 125 Hz or more is effectively shielded. In addition, the open space 8 in which the cured mass of the adhesive 20 is interposed has one side open to the hollow portion 6, thereby preventing a resonance operation in a low frequency band. Furthermore, the reinforcing metal 9 and the board piece 91 locally increase the mass of the underlay board 10 in the region between the open spaces 8 and effectively restrict the resonance action in the low frequency band.

The inventor manufactured the partition wall W shown in FIGS. 7 and 8, and conducted a test of sound transmission loss at Kobayashi Institute of Physical Sciences. As a comparative example, a partition wall W shown in FIG. 9 was manufactured. The partition wall W shown in FIG. 9 has substantially the same basic structure as the partition wall W shown in FIGS. 1 to 3, but does not include the cured mass of the adhesive 30 described in the first embodiment.

The dimensions of each part of the specimen are as follows. Example partition wall thickness T: 150 mm Underlay board 10: gypsum board 12.5 mm thick, 910 mm wide Overlay board 12: gypsum board 15 mm thick, 910 mm width Interior finish 13: gypsum board 9.5 mm thick 910 mm width Insulation / sound absorbing material 5: glass wool 25 mm thick, 24 kg / m ³ gypsum adhesive 20: 2 kg / m ² first board piece 17: gypsum board 12.5 mm thickness, 200 mm width 2nd board piece 18: gypsum Board Thickness 12.5mm, width 100mm Third board piece 91: gypsum board Thickness 12.5mm, width 100mm Reinforcement hardware 9: lightweight grooved steel material 25mm (width) x 25mm (depth) x 0.5mm (plate thickness)

Comparative Example Wall thickness of partition wall T: 150 mm Underlay board 10: Gypsum board thickness 12.5 mm, width 910 mm Reinforcement board 11: Gypsum board thickness 15 mm, width 600 mm Overlay board 12: Gypsum board thickness 12 5 mm, width 910 mm Interior finish 13: gypsum board thickness 9.5 mm, width 910 mm Insulation / sound absorbing material 5: glass wool thickness 25 mm, 24 kg / m ³ gypsum adhesive 20: 3 kg / m ²

The test results of the sound transmission loss test are shown in FIG. 10 and FIG. The numerical values in parentheses shown in FIG. 11 are TLD values.

According to the test results of the sound transmission loss test, in the comparative example, the sound transmission loss sharply decreases in a frequency band of about 125 Hz, whereas the partition wall W of the present example has a frequency of about 125 Hz. No decrease in the sound transmission loss in the band was observed, and a phenomenon in which the sound loss effect in the frequency band was relatively greatly improved was confirmed.

Further, the partition wall of this embodiment has three boards.
It has a wall structure in which layers are stacked, and the thickness of each wall is reduced as compared with a comparative example having a wall structure in which boards are stacked in four layers. Is
It exhibits higher sound insulation performance than the comparative example over the entire frequency band. Therefore, according to the partition wall structure of the present embodiment, although the wall surface can be reduced in weight, the sound insulation performance can be improved, which is extremely advantageous in practice.

Although the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above-described embodiment, and various modifications may be made within the scope of the present invention described in the appended claims. Or it can be changed.

For example, various types of boards that can be used for buildings or works can be used for the partition wall of the present invention.
For example, as the building interior board material, in addition to gypsum board, calcium silicate board, flexible board, gypsum slag board, gypsum fiber board, inorganic fiber reinforced gypsum board, glass fiber reinforced gypsum board, asbestos cement board, fiber reinforced gypsum board ( Various board materials such as FG board can be used.

[0049]

As described above, according to the above-mentioned structure of the present invention, in a dry-type light-weight partition wall structure having a structure in which a building interior board material for forming a wall surface is attached to upper and lower runners, a frequency of 125 Hz or less is obtained. A partition wall structure that improves the sound insulation performance of the partition wall in a low frequency band can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a partition wall according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of the partition wall shown in FIG.

FIG. 3 is an exploded perspective view schematically showing the structure of the partition wall shown in FIGS. 1 and 2.

FIG. 4 is a longitudinal sectional view of a partition wall according to a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line BB of the partition wall shown in FIG.

FIG. 6 is an exploded perspective view schematically showing the structure of the partition wall shown in FIGS. 4 and 5.

FIG. 7 is a longitudinal sectional view of a partition wall according to a third embodiment of the present invention.

8 is a sectional view taken along the line CC of the partition wall shown in FIG. 7 and a partially cutaway perspective view.

FIG. 9 is a longitudinal sectional view and a transverse sectional view showing a partition wall structure according to a comparative example.

FIG. 10 is a diagram showing test results of a sound transmission loss test.

FIG. 11 is a table showing test results of a sound transmission loss test.

FIG. 12 is a diagram showing actual measurement results of a sound transmission loss test for a conventional partition wall structure and a partition wall structure of the present invention.

[Explanation of symbols]

 2 Floor runner 3 Ceiling runner 5 Heat insulation / sound absorbing material 6 Hollow part 7 Closed space 8 Open space 10 Underlay board 11 Reinforcement board 12 Overlay board 13 Interior finishing material 15 Fastener 17 First board piece 18 Second board piece 20 Gypsum Adhesive 30 Gypsum adhesive M Height center S Dimension (height center area) T Wall thickness W Partition wall C Ceiling base F Floor base

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Claims (12)

[Claims] An underlay board (10) constituting a building interior board material in a dry-type partition wall structure having a construction in which a building interior board material forming a wall surface is attached to upper and lower runners (2, 3). And an overlay board (12), a reinforcing board (11) and a first inorganic adhesive (20) interposed between the boards, and the reinforcing board comprises a cured mass of the first adhesive. Are arranged at a distance from each other in the direction of the center of the wall so as to form a closed space (7) in which the closed space (7) to be dispersed is to be arranged. A second inorganic adhesive (30) of the same quality as the first adhesive is provided in the closed space. Hollow part of the partition wall at the corresponding position
(6) The hardened mass of the second adhesive applied to the back surface of the underboard board from the side, and the height center area of the underboard board
(S) A partition wall structure characterized by being distributed. 2. The building interior board material and the reinforcing board are each made of a gypsum board or a cut piece thereof, and the inorganic adhesive is a material in which an adhesive material containing a gypsum powder, a lightweight aggregate and an adhesive is kneaded with water. The partition wall structure according to claim 1, wherein the partition wall structure is made of a gypsum-based adhesive material. 3. The lower board and the upper board,
Having substantially the same width, each vertical joint position of the upper and lower boards is located on the reinforcing board, and the width of the reinforcing board is set to half of the width of the lower and upper boards; The partition wall structure according to claim 1, wherein the partition wall structure is formed. 4. A partition wall structure of a dry construction method having a structure in which a building interior board material for forming a wall surface is attached to upper and lower runners (2, 3), wherein narrow walls arranged at intervals from each other in a wall core direction. A first board piece (17) having a width and a second board piece having a smaller width than the board piece.
It has a board piece (18) and an architectural interior board material (10, 12) integrated with the second board piece, wherein the second board piece is fixed to the front surface half of the first board piece. An open space (8) in which the inorganic adhesive (20) can be dispersedly formed is formed between the surface-side remaining portion of the first board piece and the interior board material, and the cured mass of the adhesive is The first board piece and the interior board material are adhered to each other, the first board piece has a width of less than half the width of the interior board material, and the second board piece is １ ／ of the interior board material. A partition wall structure having the following width. 5. A second inorganic adhesive having the same quality as the adhesive.
(30) is applied to the back surface of the interior board material from the hollow portion (6) side of the partition wall in a region between the first board pieces, and the hardened mass of the second adhesive is applied to the interior board material. The partition wall structure according to claim 4, wherein the partition wall structure is distributed in the height center region (S). 6. The interior board material and the board piece are made of a gypsum board or a cut piece thereof, and the inorganic adhesive is obtained by kneading an adhesive material containing gypsum powder, a lightweight aggregate and an adhesive with water. The partition wall structure according to claim 4, comprising a gypsum-based adhesive. 7. A partition wall structure of a dry construction method having a structure in which an interior board material for a building forming a wall surface is attached to upper and lower runners (2, 3), wherein an inorganic adhesive (30) is provided in the partition wall. A portion (6) is applied to the back surface of the interior board material (10, 12), and a cured mass of the adhesive is dispersed and arranged in a height center region of the interior board material, and the application of the adhesive is performed. The area is limited within a range of a predetermined dimension (S) in the vertical direction from the height center (M) of the partition wall, and the predetermined dimension is ４ to ６ of the total height (H) of the interior board material.
A partition wall structure characterized by being set to: 8. The partition wall structure according to claim 7, wherein the coating region is limited within the dimension range vertically symmetric from the height center of the partition wall. 9. The adhesive according to claim 7, wherein the adhesive is vertically arranged in two or three rows.
The partition wall structure described in. 10. A partitioning wall structure of a dry construction method having a structure in which a building interior board material forming a wall surface is attached to upper and lower runners (2, 3), wherein narrow walls arranged at a distance from each other in a wall core direction. A first board piece (17) having a width and a second board piece having a smaller width than the board piece.
It has a board piece (18) and an architectural interior board material (10, 12) integrated with the second board piece, wherein the second board piece is fixed to the front surface half of the first board piece. An open space (8) in which the first inorganic adhesive (20) can be dispersedly formed is formed between the surface-side remaining portion of the first board piece and the interior board material, and the first adhesive is The hardened mass adheres the first board piece and the interior board material to each other and forms a second inorganic adhesive (3) of the same quality as the first adhesive.
0) is applied to the back surface of the interior board material from the hollow portion (6) side of the partition wall in a region between the first board pieces, and the hardened mass of the second adhesive material is applied to the interior board material. A partition wall structure which is arranged in a distributed manner in the height center area (S). 11. The coating area of the second adhesive is limited within a range of a predetermined dimension (S) in a vertical direction from a height center (M) of the partition wall, and the predetermined dimension is determined by the interior board material. Height of
The partition wall structure according to claim 10, wherein (H) is set to 1/4 to 1/6. 12. The first board piece (17) is made of a cut piece obtained by cutting the interior board material to a width of not more than half, and the second board piece (18) is a quarter of the interior board material. The partition wall structure according to claim 10, comprising a cut piece cut to the following width.