JPH09203153A - Vibration control structure for building composite panel and floor board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain vibration of building boards to prevent sound propagation so that a damping structure can be used in insulating ceilings, floors, and walls from sounds by bonding two building boards together, such as plywood or gypsum board, using an acrytic emulsion type adhesive. SOLUTION: Two building boards 11, 12 are bonded together with an acrylic emulsion type damping adhesive 13. I n that case, the building boards 11, 12 may be of the same kind or different and selected to suit purposes. A composite building panel 10 for use on ceilings or walls, if it is used on a floor by bonding two or more gypsum boards together, for example, is formed by bonding plywood and the gypsum boards together. The damping adhesive 13 is preferably an acrylate viscous material, applied by a sufficient amount to form uniform layers over the whole mating surfaces. Thus, a structure is simplified for the insulation of floor plates from sounds, and work execution or the work can be quickly carried out on-site and in a prefabricated-building factory at reduced cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control structure for building composite boards and floor boards.

[0002]

2. Description of the Related Art In recent years, in buildings, there has been a problem of sound transmitted through a wall between adjacent rooms, a floor of an upper floor, or an outer wall. It is well known that sound is easily transmitted from the upper floor to the lower floor particularly in a single-story building, an apartment, a condominium or the like having two or more floors. Propagation of sound from the upper floor to the lower floor is a problem especially for wooden floor materials, and sound insulation measures are strongly required.

[0003]

Conventionally, as a sound insulation measure for a floor, a cushioning material such as a seat having a cushioning effect is interposed between a flooring (wood plywood) and a floor base (eg joist or concrete). There is something to do. Examples of the cushioning material include a rubber material and a sponge material.
This cushioning material is attached to the back surface of each unit plate of the flooring in advance at the time of construction, and is placed on the floor base by laying the flooring to absorb the propagation sound.

When there is a space between the floor of the upper floor and the ceiling of the lower floor, the space is filled with glass wool or the like and the glass wool or the like absorbs sound to suppress vibrations or the floor. It has been proposed to provide a spring-loaded weight having a resonance effect on the back surface so that the vibration of the floorboard can be quickly converged. The sound insulation measures are
It is also required for boundary walls such as partition walls and outer walls, and a structure using glass wool or the like has been proposed in consideration of the heat insulating effect.

However, these sound insulation measures are not satisfactory in any of the methods, for example, the construction is complicated and the floor feels uncomfortable to walk.

By the way, the propagation of sound from the upper floor to the lower floor of the building or the adjacent room is largely related to the surface vibration of the floor plate, the ceiling plate, the wall plate or the like. Therefore, if these surface vibrations are suppressed and quickly converged, effective sound insulation can be expected. The present invention has been obtained as a result of intensive research based on the above findings, and an object thereof is to provide a building composite board having a vibration damping function and a vibration damping structure of a floor board.

[0007]

The invention of a composite board for construction is
At least two building boards of the same or different type,
It is characterized by being bonded with a damping adhesive. An acrylic emulsion adhesive is suitable as the vibration damping adhesive, and a gypsum board or the like can be used as an example of the building board to be laminated.

On the other hand, the invention of the vibration control structure of the floor board is characterized in that the gypsum board is attached to the back surface side of the floor board made of wood plywood with a vibration damping adhesive composed of an acrylic emulsion adhesive. A carpet, a tatami mat, or a flooring is laid on the surface of the floor board.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. 1 is a cross-sectional view of an embodiment of the building composite board of the present invention, FIG. 2 is a schematic diagram showing a method for measuring the damping effect of the building composite board of the present invention, and FIGS. 3 to 5 show the measurement results. FIGS. 6 to 8 are views showing measurement results of a comparative example by the same vibration damping effect measuring method, and FIG. 9 is a perspective view showing an example of a floor board vibration damping structure of the present invention.

The building composite board of the present invention has at least two building boards 1 like the building composite board 10 shown in FIG.
1 and 12 are pasted together with a vibration damping adhesive 13. The building boards 11 and 12 to be laminated may be of the same kind or of different kinds, and are appropriately selected according to the application of this building composite board. For example, for a building composite board used for a ceiling or a wall, two gypsum boards are laminated together, and for a building composite board for a floor,
For example, a wooden plywood and a gypsum board are laminated together. The number of the building boards 11 and 12 to be laminated is not limited to two (that is, two layers), but may be a required thickness or rigidity depending on the application of the building composite board, the type and rigidity of the building board used, and the like. It becomes the number of sheets (multilayer).

The vibration-damping adhesive 13 for adhering the building boards 11 and 12 is for quickly converging the vibrations when they are applied to the building composite board to make it difficult for sound to be transmitted. Acrylic emulsion adhesives are preferred. In particular, an acrylate represented by the general formula CH ₂ ═C—COOR (R: alkyl group), which is obtained by copolymerizing an alkyl group represented by R having 4 to 10 carbon atoms with vinyl acetate or the like. Acrylate-based adhesives are preferred. The application amount of the vibration-damping adhesive 13 is an amount that forms a layer evenly on the entire bonding surface, and it is particularly preferable that the amount is such that no void is generated between the bonding surfaces.

Next, the damping effect of the building composite board 10 having the above structure was examined by the method shown in FIG.
The test body S has a thickness of 12 mm, a length of 35 mm, and a width of 300 mm.
2 gypsum boards made of acrylic emulsion are used as vibration damping adhesives (trade name: OROTEX K-85
Iida Sangyo Co., Ltd.) Three kinds of 1 g, 2 g, and 3 g were used. To measure the damping effect, use thread 21
The test body S suspended by was hit with an impact hammer 22, and the vibration of the test body S caused thereby was measured. Reference numeral 23 is a pickup, and 24 is a fast Fourier transform analyzer as a measuring instrument for measurement.
The measurement was carried out at Nagoya City Industrial Research Institute. The measurement results are shown in FIGS. Fig. 3 shows a damping adhesive 1g, Fig. 4
Corresponds to the vibration damping adhesive 2g, and FIG. 5 corresponds to the vibration damping adhesive 3g. Further, for comparison, the vibration damping effect was investigated in the same manner for a comparative example using a vinyl acetate adhesive instead of the vibration damping adhesive. The results are shown in FIGS. 6 corresponds to the adhesive 1g, FIG. 7 corresponds to the adhesive 2g, and FIG. 8 corresponds to the adhesive 3g.

Measurement results for the embodiment of the present invention (see FIG.
According to FIG. 5), it can be seen that in the example, the resonance point peak is gentle and low and the vibration damping property is high. On the other hand, in the comparative example, as is clear from the measurement results (FIGS. 6 to 8), fine vibrations are seen in the whole,
Moreover, it can be seen that the vibration damping property is insufficient because the resonance point peak is high and sharp. As can be understood from these measurement results, the one according to the present invention has a smaller resonance point (waviness width) as a whole than the comparative example, and exhibits excellent vibration damping properties.

Therefore, if the building composite board of the present invention is used for the ceiling of the lower floor or the floor of the upper floor, it is possible to suppress the transmission of vibration from the floor of the upper floor to the floor of the lower floor, and furthermore, the floor board or the ceiling board. Since the resonance of can be suppressed, it is possible to effectively prevent the sound from being transmitted from the upper floor to the lower floor. Further, the building composite board of the present invention can suppress the propagation resonance of sound between the adjacent room and the outdoors if it is used for the wall, and further suppresses the surface vibration of the wall surface even when an object is struck against the wall and quickly. Since it can be converged to, it is possible to suppress the sound transmission between the adjacent room and the outdoors.

Next, an example of the vibration damping structure of the floor board of the present invention will be described. FIG. 9 is a perspective view showing an example of the vibration damping structure. The damping structure of the floorboard of the present invention is suitable for floors of the second floor and above, and is applied to the floorboard 31 on which a finishing material such as carpet or folding is laid.

As the floor board 31, a normal floor material made of wood plywood is used, and it is attached on the floor joist 32 to form a floor base material. The floor joists 32 are provided in parallel with a predetermined number of building skeletons (not shown). A gypsum board 34 is attached to the back surface side of the floor plate 31 with a vibration damping adhesive 33, thereby forming the vibration damping structure of the present invention.

The vibration damping adhesive 33 is used for the building composite plate 10 described above.
The same acrylic emulsion-based adhesive is used.
The amount of the vibration damping adhesive 33 is the same as the floor board 31 and the gypsum board 34.
It is appropriately determined within the range in which the damping adhesive can be evenly applied to the bonding surfaces so that no gap is created between the bonding surfaces. The gypsum board 34 is attached to the back surface side of the floor board 31 between the floor joists 32 by the damping adhesive 33. The gypsum board 34 is generally used as a building board, and in this embodiment, it has a thickness of 12 mm. The number of the gypsum boards 34 is not limited to one as shown in the figure, but an appropriate number of the gypsum boards may be bonded according to the thickness of the floor board 31 and the material of the floor finishing material laid thereon. It may be a layered layer of the agent.

According to the vibration damping structure of the floor plate, the vibration damping adhesive 33 provided on the back side of the floor plate 31 and the vibration damping adhesive 33.
Thus, the gypsum board 34 adhered to the floor board 31 acts in the same manner as in the case of the building composite board 10 to exert an excellent vibration damping effect. Moreover, since the gypsum board 34 does not have a cushioning property, there is no fear that a person walking on the floor will feel uncomfortable.

[0019]

As shown and described above, the building composite board of the present invention comprises at least two of the same kind or different kinds.
Since two building boards are laminated with a damping adhesive, the vibration of one building board is not transmitted to the other building board, and the vibration of one building board is also suppressed, so that it is rapid. Since it is converged on, the sound propagation can be suppressed, and it can be suitably used for sound insulation of the ceiling, floor or wall.

The floor board vibration damping structure of the present invention is extremely simple as a sound-insulating measure because the floor board vibration damping effect can be imparted to the floor board by simply attaching a gypsum board to the back surface of the floor board with a vibration damping adhesive. , Structurally easy to configure. Therefore, the vibration control structure of the floorboard according to the present invention has an effect that the construction or work can be carried out inexpensively and promptly on site or in the case of a prefabricated building in a factory.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of one embodiment of a building composite board of the present invention.

FIG. 2 is a schematic diagram showing a method for measuring vibration damping effect of a building composite board of the present invention.

FIG. 3 is a diagram showing a measurement result of an example.

FIG. 4 is a diagram showing measurement results of examples in which the amount of the vibration damping adhesive was changed.

FIG. 5 is a diagram showing measurement results of examples in which the amount of the vibration damping adhesive was changed.

FIG. 6 is a diagram showing a measurement result of a comparative example by the vibration damping effect measuring method shown in FIG.

FIG. 7 is a diagram showing measurement results of comparative examples in which the amount of adhesive is changed.

FIG. 8 is a diagram showing measurement results of comparative examples in which the amount of adhesive is further changed.

FIG. 9 is a perspective view showing an embodiment of a floor board vibration damping structure of the present invention.

[Explanation of Codes] 10 Building Composite Boards 11,21: Building Boards 13: Damping Adhesives 31: Floor Boards 32: Floor joists 33: Damping Adhesives 34: Gypsum Boards

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiko Ohashi 1-5 Nouma, Kitasakimachi, Inazawa, Aichi Prefecture Iida Industrial Co., Ltd.

Claims (4)

[Claims] 1. A composite board for construction, which is formed by laminating at least two construction boards of the same kind or different kinds with a damping adhesive. 2. The composite board for construction according to claim 1, wherein the vibration damping adhesive is an acrylic emulsion adhesive. 3. The building board comprises gypsum board.
Alternatively, the building composite board according to item 2. 4. A vibration damping structure for a floorboard, characterized in that a gypsum board is attached to the back surface side of the floorboard made of wood plywood with a vibration damping adhesive composed of an acrylic emulsion adhesive.