JP3477072B2 - Building floor structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flooring material for a building, a floor board and a flooring structure for a building, and a flooring material for a high-rise building having a rigid structure such as a low-rise apartment, a detached house, and an RC structure. Applicable to

[0002]

2. Description of the Related Art Conventionally, low-rise apartments and detached houses are
Unlike a general RC structure, it has a flexible structure, and there are various studies on how to reduce heavy floor impact noise that receives a large excitation force. Has not been found. In a rigid structure like RC structure,
A method of reducing heavy floor impact sound by increasing the floor slab thickness is generally used.

Conventionally, various studies have been conducted to improve heavy floor impact sound by using a floor material and a floor base material, but a method for obtaining a large improvement amount has not been known. Therefore, using the floor slab, etc., vibration insulation of floor slabs and floor slabs and beams, ceilings, ceiling hangers, and ceiling space, it is necessary to consider the technical aspects to improve the weight impact sound as a whole. Has become the mainstream.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to reduce heavy floor impact noise of a building, for example, without changing the existing low-rise apartments or detached houses significantly. It is to reduce the impact sound to a level below LH-60.

[0005]

The inventor of the present invention is to provide, as a floor base material, a member for improving heavy floor impact sound that can be immediately applied to the current low-rise apartments and detached houses. It is necessary to further enhance the overall effect of vibration isolation between the body and the beam, the ceiling, the ceiling hanger, and the ceiling space, and I thought that it would be very effective in improving the current situation. Succeeded in developing a new floor base material.

That is, according to the present invention, the floor board and the floor board are supported.
And a supporting structure for a building ,
The base material and the decorative board laid on this floor base material
A floor structure of a building comprising:
And a damping plate having a damping layer made of a viscoelastic body provided on at least one surface of the first plate-shaped body having rigidity, , A second plate-shaped body having rigidity and a plurality of elastic vibration-proof projection members provided on at least one surface of the second plate-shaped body, wherein the plurality of vibration-proof projection members are mutually A vibration-isolating plate that is separated from the plate-shaped body.
It is possible to prevent the vibration of the
The vibration-proof protrusion member is formed of an elastic body, a viscoelastic body, or a foam body having different hardnesses in a direction perpendicular to the floor impact pressure direction. and oscillation plate are stacked, heavy floor impact sound is the reduced
Re characterized Rukoto, which relates to the floor structure of a building. Further, the present invention comprises a floorboard and a structure for supporting a building supporting the floorboard, wherein the floorboard is a floor base material.
And a decorative plate laid on this floor base material
A floor structure of a building, which is laid on the support structure
The base material to be treated is a rigid first plate and
And at least one surface of the first plate-like body
Damping plate with a damping layer made of viscoelastic material and rigidity
At least one of the second plate-like body and the second plate-like body
It has a plurality of elastic anti-vibration projection members provided on the surface.
A vibration-proof plate in which the plurality of vibration-proof protrusion members are separated from each other.
And the vibration-proof projection member is provided with the support structure or
Is installed on the damping plate, and
The body is provided with a substrate made of a rigid material,
When the member is subjected to a heavy floor impact on the substrate, the substrate
It is equipped with a deformation suppressing member that suppresses the deformation of the plate.
Shape suppression member is comprised of an elongated material consisting of rigid materials, this
Made of rubber, foam or fibrous material
Vibration insulation material is provided, and this vibration insulation material supports
It is in contact with the structure and other substrates, and the damping plate and
It is laminated with the board and the heavy floor impact sound is reduced.
The present invention relates to a floor structure of a building. Furthermore
In the present invention, the floorboard, and a supporting structure of a building that supports the floorboard, the floorboard, the floor base material,
A building equipped with a decorative board laid on the floor base material
The floor structure of the structure, which should be laid on the support structure.
The floor base material is a rigid first plate and a first
Viscoelastic body provided on at least one surface of the plate-like body
A damping plate having a damping layer made of
Provided on at least one surface of the plate-like body and the second plate-like body
Is provided with a plurality of elastic body vibration-proof projection members,
A plurality of anti-vibration protrusion members are separated from each other
And the anti-vibration protrusion member is the support structure or the control unit.
It is installed on the vibration plate, and the second plate is rigid.
A substrate made of a material, wherein the substrate is the substrate
Suppress the deformation of the substrate when a heavy floor impact is applied to
It is equipped with a deformation suppressing member that
Made of a long material made of a flexible material, the deformation suppressing member
It is provided on the side of the vibration-proof projection member, and
Laminated with the anti-vibration plate to reduce heavy floor impact noise.
Related to the floor structure of the building, which is characterized by
It

The support structure means a structure which supports a floor base material, and in addition to a structure of a building, a structure provided with another material such as a waterproof layer on the structure, and a structure in which a sheet is installed between joists. Contains.

The basic operation of the floor base material of the present invention will be described with reference to FIG. On top of the support structure 6, the
The floor base material according to the reference example is supported. The floor base material has a laminated structure of a vibration damping plate 8A and a vibration damping plate 7A. In the vibration-proof plate 7A, a plurality of vibration-proof projection members 2A are attached below the second plate-shaped body 1A. The damping plate 8A is
The first plate-shaped body 4A and the vibration damping layer 5A are provided. In this example, the damping plate 8A is on the bottom and the vibration-proofing projection member 7A is on the top.

When a heavy floor impact is applied to the floor base material,
First, the substrate 1A deforms and vibrates, but the substrate 1A is the substrate 4A.
Since it is not in contact with the
The vibration of A is transmitted to the substrate 4A through the antivibration protrusion member 2A. At this time, since the vibration-proof protrusion member 2A has elasticity or viscoelasticity, it deforms itself in response to the vibration of the substrate 2A, thereby reducing the vibration amplitude and the impact applied to the substrate 4A at once. To reduce. When the substrate 4A vibrates, the vibration is transmitted to the viscoelastic damping layer 5A that is stuck and constrained to the substrate 4A, but the vibration energy is consumed inside the damping layer 5A, and the vibration of the substrate 4A rapidly. Be absorbed.

As described above, two or more rigid plate-like bodies are prepared, and one plate-like body is provided with a damping layer made of a viscoelastic body to restrain and suppress the vibration of the plate-like body, and the other. It was found that the vibration noise of heavy floors can be remarkably reduced by combining the plate-like body with a vibration-proof protrusion member to reduce the vibration amplitude.

The structure and operation of the present invention will be further described below. Both the first plate-shaped body and the second plate-shaped body need to have the rigidity required for the floor base material. Each of these plate-shaped bodies may be composed of a single substrate, or may be a laminated body of a plurality of substrates. This substrate is made of a rigid material. The rigid material is preferably wood, cement, hard plastic, or metal. As the substrate, wood veneer, laminated wood, plywood, particle board, hard board, wood wool cement board and other wood boards: gypsum board, flexible board, cement board, hollow extruded cement board, inorganic board such as ALC: Metal plates such as iron plate and aluminum plate: vinyl chloride, polystyrene, polyethylene,
A non-foamed or foamed plastic plate made of polypropylene, EVA, acrylic, phenol or the like; a fiber reinforced plastic plate made of unsaturated polyester or the like: paper or a cardboard plate made of plastic is preferable.

In a preferred embodiment of the present invention, at least one of the first plate-shaped member and the second plate-shaped member is made of a rigid material, and the substrate is subjected to a heavy floor impact. A deformation suppressing layer for suppressing deformation is provided, and the deformation suppressing layer is made of a net, a woven fabric, a non-woven fabric, a metal foil, a film made of a hard polymer material, or a sheet made of a hard polymer material. When the substrate vibrates, the material acts as a kind of damping material so as to restrain and immediately damp the vibration of the substrate. The mesh is preferably made of metal or hard plastic.

In another preferred embodiment of the present invention, at least one of the first plate and the second plate is made of a rigid material, and when a heavy floor impact is applied to the substrate. A vibration absorbing layer for absorbing the vibration of the substrate is provided, and the vibration absorbing layer is powder particles made of one or more materials selected from the group consisting of rubber, resin, fiber, paper, wood, inorganic materials and metals. It is a molded body obtained by binding a binder to the body and molding. This material has a property of absorbing vibration inside, and damp the vibration of the substrate at an early stage. Binders include many materials such as urethane, epoxy, liquid rubber, powder hot melt, and asphalt. In particular, by binding the inorganic material and the metal to the binder, the specific gravity of the vibration absorbing layer can be increased and the heavy floor impact sound can be more significantly absorbed.

In still another preferred embodiment of the present invention, at least one of the first plate-like member and the second plate-like member is made of a rigid material, and a heavy floor impact is applied to the substrate. A vibration absorbing layer for absorbing the vibration of the substrate is provided, and the vibration absorbing layer is any one of (a)-(f).

(A) A honeycomb structure, and a plate, film or sheet provided on the upper surface and the lower surface of the honeycomb structure. The film or sheet is preferably made of hard plastic or rubber. (B) Cardboard-like material. It preferably consists of hard plastic, paper. (C) Hollow extruded cement board.

(D) A cardboard-like material in which the hollow part of the cardboard-like material is filled with a cured product of a substance which is liquid at room temperature and undergoes a curing reaction or a foaming curing reaction at room temperature. (E) A hollow extruded cement plate-like product in which a hollow part of the hollow extruded cement plate-like product is filled with a cured product of a substance which is liquid at room temperature and undergoes a curing reaction or a foaming curing reaction at room temperature. (F) a honeycomb structure, and a plate, a film, or a sheet provided on the upper surface and the lower surface of the honeycomb structure, wherein the hollow portion in the honeycomb structure is liquid at room temperature, Vibration absorbing layer filled with a cured product of a substance that undergoes a curing reaction or a foaming curing reaction at room temperature

In (d), (e) and (f), in addition to the vibration absorbing function of the corrugated cardboard or the hollow extruded cement plate, the corrugated cardboard or the hollow extruded cement plate is contained in these hollow portions. Since a hardened material having a different vibration characteristic from that of the material is filled, the effect is enhanced against the heavy floor impact sound of a wider frequency range. Further, by using the vibration absorbing material having these hollow portions, there is an effect of preventing the chemical substance such as formalin from escaping.

The thickness of the first plate-shaped body and the second plate-shaped body is 2
It is preferably at least 5 mm, more preferably at least 5 mm. If the thickness is less than 2 mm, the smoothness is difficult to obtain, the walking feeling becomes fluffy, and the bending tends to occur when a floor impact is applied. If it is 20 mm or more, it is preferable for forming a firm groundwork, but if it is applied to the existing floor skeleton without changing the specifications, the floor surface becomes too high. In this respect, it is preferably 15 mm or less.

Examples of the material of the vibration damping layer include non-vulcanized rubber-based, thermoplastic elastomer-based, and room temperature reaction-based viscoelastic bodies. This viscoelasticity has the property of having both viscosity and elasticity, and refers to the property of delaying the propagation of vibration and absorbing vibration energy in response to excitation.

The non-vulcanized rubber-based viscoelastic body contains butyl rubber, recycled butyl rubber, polyisobutylene, EPT, EP rubber, natural rubber, etc. as a rubber component, and a softening agent, a filler, an antiaging agent, etc. are added as necessary. You can use what you did. Here, in particular, the system containing regenerated butyl rubber in an amount of 30 wt% or more of the rubber component has a vulcanized gel content, so that the viscous resistance is increased, the cold flow phenomenon is prevented, the plastic flow is prevented, and the vibration damping is achieved. It has the characteristic of increasing the effect.

Thermoplastic elastomer viscoelastic materials include styrene-isoprene-styrene, styrene-butadiene-
Examples thereof include styrene, thermoplastic urethane, and thermoplastic polyester. Since the polymer has both a hard segment and a soft segment, the polymer behaves similarly to a vulcanized rubber without vulcanization.

The room-temperature reaction viscoelastic material is a substance which is liquid at room temperature and which undergoes curing reaction and foaming curing reaction at room temperature. Specifically, the main chain skeleton is polybutadiene, polychloroprene, polyisoprene, polyester, polyether, a telechelic polymer having a hydroxyl group, an amino group, a carboxyl group, an epoxy group or the like at both ends of the molecule, modified silicon, silicon Examples thereof include epoxy, polysulfide rubber, and the like. They may be foamed by a system to which a foaming agent or a foaming aid is added.

Further, by impregnating the fiber with a substance which is liquid at room temperature and undergoes a curing reaction or a foaming curing reaction at room temperature, the compression set can be extremely reduced. By utilizing this property, a material in which the fibrous layer is impregnated with the room temperature reaction viscoelastic material in whole or in part can obtain good vibration damping and vibration damping effects.

This has the following forms. (1) The uniform impregnated layer and the non-impregnated layer are provided when viewed in the horizontal direction perpendicular to the thickness direction of the fiber layer.

(2) The fiber layer is preliminarily opened with a punching die or the like in an arbitrary size and shape, and the opening is filled with a substance which is liquid at room temperature and undergoes a curing reaction or a foam curing reaction at room temperature. In this case, the periphery of the opening can be a portion that is unlikely to be deformed by impregnation, and the periphery of the opening can be a portion of only fibers. Therefore, there is a part of the column of the damping material, and the sound absorbing layer made of fibers is formed around the column. Then, the column of the damping material exerts a function of pushing or pulling the fiber when it is deformed by the vibration, and the fiber resists the function of exerting an effect of additionally providing the damping effect. .

Further, the damping layer is a sheet-like material, and includes a base material and a cured material layer, the base material is made of a resin film, and a plurality of air chambers are provided apart from each other. And a void is provided between adjacent air chambers, and the cured product layer is a liquid at room temperature and is composed of a cured product of a substance that undergoes a curing reaction or a foaming curing reaction at room temperature,
It is possible to use a sheet-like material in which the voids are filled with the cured product. This is a good damping material because the viscoelasticity of the cured product and the air spring in each air chamber adjacent thereto can be effectively utilized.

The thickness of the damping layer is preferably 0.5 mm to 15 mm, more preferably 1.5 mm to 10 mm.
mm is good. If the rigidity of the board with the damping layer is increased,
The damping effect is further improved. Further, by providing the substrates on both sides of the damping layer, the damping effect is further improved. In this case, the damping effect is high even if the damping layer is thin. However, if one side of the damping layer is a floor precursor, for example, the floor precursor is AL
When the surface is porous as in C, it is necessary to secure a thickness of the vibration damping layer of at least 2 mm. Further, when the damping material is not sandwiched by the plate-shaped members, it is better to make the damping material as thick as possible for better sound insulation performance. The thickness of the damping material is 0.
When the thickness is 5 mm or less, it is not preferable because the work such as sticking becomes difficult, and conversely, when the thickness is 15 mm or more, the thickness becomes too thick.

The damping plate may be composed of two layers, a substrate and a damping layer,
It may be three layers of substrate / damping layer / substrate, or may be an odd number layer of plate-shaped members and damping layers alternately stacked, and may be an even number of four or more layers of plate-shaped members and damping layers alternately stacked. It may be a layer. The substrate itself may be a combination of a plurality of plates, for example, plywood.

The vibration-proof projection member will be described below. The anti-vibration protrusion member referred to in the present application has an action of preventing the vibration of the plate-shaped body from propagating to the vibration-damping plate and the floor-body underneath thereof. The following are preferred. (1) Made of anti-vibration rubber. The anti-vibration protrusion member is installed on the support structure or the damping plate, and the ratio of the contact area of the anti-vibration protrusion member to the area of the support structure or the damping plate during vibration is 0.5% to 10%. And the thickness of the anti-vibration protrusion member is 3
~ 30 mm. (2) The vibration-proof protrusion member is a fibrous material that is liquid at room temperature and is impregnated with a cured product of a substance that undergoes a curing reaction or a foaming curing reaction at room temperature. The vibration-proof protrusion member is installed on the support structure or the damping plate, and the ratio of the contact area of the vibration-proof protrusion member to the area of the support structure or the damping plate at the time of vibration is 2 to 40%. , The thickness of the anti-vibration protrusion member is 3 to 30
m.

(3) The vibration-proof projection member is installed on the support structure or the damping plate, and the vibration-proof projection member suppresses deformation of the substrate when a heavy floor impact is applied to the substrate. The deformation suppressing member body is made of a long material made of a rigid material, and a vibration insulating material made of rubber, foam or fibrous material is provided below the long material. ing. (4) The vibration-proof projection member is formed of an elastic body, a viscoelastic body, or a foamed body having different hardnesses in a direction perpendicular to the floor impact pressure direction.

The antivibration rubber of (1) is preferably such that the ratio of the contact area of the antivibration protrusions during vibration to the area of the floor-body or the damping plate on which the antivibration rubber is installed is 0.5 to 10%. Is 1 to 5% and the thickness is 3 to 30 mm, preferably 5 to 20 mm
The vibration-proof rubber has a rubber hardness of 30 to 70 in Shore A.
Degree, preferably 40 to 60 degrees.

If the ratio of the contact area during vibration is less than 0.5%, the bending margin due to the floor load becomes large. Conversely, 10%
If it exceeds, the effect of reducing the peak of the excitation force gradually deteriorates, which is not suitable and causes a cost increase. Also, when the rubber hardness is less than 30 degrees, due to floor load,
There is a risk that compression set will occur in the long term and the soundproofing performance will deteriorate. On the other hand, if it exceeds 70 degrees, it is necessary to reduce the contact area ratio, which causes a problem in floor stability, and if the contact area ratio is increased, the soundproofing performance deteriorates.

The anti-vibration rubber itself is preferably a rubber-rich material in consideration of the floor load applied all the time. Further, as shown in an example in FIG. 10, the anti-vibration rubber is provided with vibrations by providing unevenness having different heights in the pressing direction at the time of vibration of floor impact and / or in the direction perpendicular to the pressing direction. Gradually weaken the power,
In addition, it is preferable to devise to reduce the peak of the vibration force by lengthening the vibration time. From the above viewpoint, the anti-vibration rubber has a through-hole as shown in FIG. 11 (b) in the direction perpendicular to the pressing direction. Is large.

As described in (4), in the above-mentioned anti-vibration rubber,
An anti-vibration rubber having an elastic body, a viscoelastic body, and a foam body having different hardness in a direction perpendicular to the floor impact pressure direction is shown in FIG.
As illustrated in FIG. 11, when the viscoelastic body or the foam is filled in concave and convex portions having different heights in the direction perpendicular to the pressing direction at the time of floor impact vibration, the vibration force is gradually increased. Since the vibration is weakened and the vibration time is lengthened, and further, energy loss associated with the deformation of the viscoelastic body or the foam occurs, a larger vibration force peak can be reduced. Further, the viscoelastic body or the foamed body is very effective in preventing the elastic body from vibrating.

The viscoelastic body or the foam filled in the recess is
Hot melt, reactive curable liquid, reactive foam curable liquid,
Examples include caulking and non-vulcanized butyl rubber compositions.

It is also effective to use the vibration-proof rubber itself as a combination of elastic bodies, viscoelastic bodies and foams having different hardness. A combination of rubbers having different hardnesses can be provided in a direction perpendicular to the pressing direction of floor impact. Also in this case, as described above, it is possible to reduce the peak of the exciting force by providing the through hole at right angles to the pressing direction. On the other hand, it is strictly prohibited to provide the rubber with a screw portion for height adjustment of metal or plastic, which is used for a double floor. When vibrating, the metal is vibrated through the rubber, and the weight impact sound becomes worse.

In the above item (2), the ratio of the area of the floor-body or the vibration damping plate on which the antivibration protrusion member is installed to the contact area of the antivibration protrusion at the time of vibration is 2% to 40%. It is preferably 3% to 15%. If it is less than 2%, the bending margin of the floor load becomes large, which is not preferable. On the other hand, if it exceeds 40%, the deformation at the time of vibration becomes extremely small and the reduction amount of the vibration force peak becomes worse, which is not suitable. Moreover, the thickness is 2 mm to 20 mm.
And more preferably 3 mm to 10 mm. If it is less than 2 mm, the effect of reducing the peak of the excitation force is significantly deteriorated, which is not suitable. On the contrary, if it exceeds 20 mm, not only the cost becomes high, but also the effect of reducing the peak of the excitation force reaches the ceiling,
There is no point in thickening.

In the above (3), the ratio of the area of the floor-body or the damping plate on which the antivibration protrusion member is installed to the contact area of the antivibration protrusion during vibration is more preferably 3% to 30%. The range is 5% to 20%. If it is less than 3%, the bending margin of the floor load becomes large, which is not preferable. On the other hand, if it exceeds 30%, the deformation at the time of vibration becomes extremely small and the reduction amount of the vibration force peak deteriorates, which is not suitable. Also, the thickness is 5 mm to 30
In mm, a more preferable range is 5 mm to 20 mm.
If it is less than 5 mm, the flexural rigidity of the vibration-proof plate cannot be sufficiently increased, which is not suitable. When it exceeds 30 mm, the total thickness of the floor is excessively increased, which is not preferable.

In the case where the anti-vibration protrusion member is provided with a deformation suppressing member for suppressing the deformation of the substrate when a heavy floor impact is applied to the substrate, and the deformation suppressing member is made of a long material made of a rigid material. The deformation suppressing member is made of, for example, a metal such as aluminum, iron or stainless steel, a plastic such as vinyl chloride, acrylic, styrene or phenol, an FRP such as unsaturated polyester and crow wool, wood or paper. The elongated body preferably comprises a prism, a rod having a U-shaped cross section, a tube, and a corrugated plate in cross section. A vibration insulating material such as a rubber or polymer foam or a fibrous material is provided under the deformation suppressing member, preferably on the contact surface with the support structure or another substrate.

The action has a great effect of increasing the bending rigidity of the substrate. A plurality of the vibration-proof protrusion members may be used in the longitudinal direction of the substrate. For example, a length of about 30 cm may be used, and a gap of 15 cm may be provided between each of them so that the gaps alternate with each other. It may be installed in rows.

Further, in the case of a rod, a tube, or a corrugated body having a U-shaped cross section, it is still liquid at room temperature in the groove portion of the U-shaped rod, the middle part of the pipe, and the valley portion of at least one surface of the corrugated plate. In addition, by injecting a substance that undergoes a curing reaction or foaming curing reaction at room temperature, and curing and foaming curing, it also imparts a vibration damping effect to the deformation suppressing member itself, and further the vibration damping and vibration damping effect of the vibration damping plate Acts to improve.

The vibration-proof projection member may be fixed to the substrate with an adhesive. However, deformation suppression member, because it is the purpose of exhibiting vibration damping effect by increasing the flexural rigidity of the substrate, fixing of the substrate is higher in the effect of using screws. Therefore, it is desirable that the screws be firmly fixed by using the screws alone or by using the screws and the adhesive in combination. Further, if a sound absorbing material is provided around each of the vibration-proofing projection members provided on the lower portion of the plate-shaped body, the walking feeling is further improved.

Next, the construction of the floor base material of the present invention will be described below. When the flooring material of the present application is applied to a support structure such as a floor structure, a vibration damping plate or a vibration damping plate is installed so as to be orthogonal to the longitudinal direction of the ALC, and the vibration damping plate or the vibration damping plate above it is below. It is better to install it so that it is orthogonal to the longitudinal direction of the
Increases the stability of the floor. However, since the sound performance hardly changes depending on the directions of the vibration damping plate and the vibration damping plate, they may be fixed by any method. In addition, when installing the vibration damping plate on the vibration damping plate,
Suitable for fixing with screws.

In order to improve the feeling of walking, it is advisable to provide the sound absorbing material around the vibration-proofing projections with the same thickness as or slightly thinner than the vibration-proofing projections. On the contrary, if it is thicker than the anti-vibration protrusion, the soundproof performance is 2
It is worse than the resonance at 50 Hertz.

In addition, the circumference of the room to be constructed has the same thickness as the vibration-proofing projections of the vibration-proofing plate, and the sound-absorbing material is provided as a grooving joist, so that the amount of displacement due to the load of furniture or the like can be prevented without lowering the sound-proofing performance. Can be reduced. This is a matter to be noted especially when the anti-vibration plate is cut due to the room shape.

[0046]

EXAMPLES The present invention will be described in detail below with reference to examples.

Reference Example 1 Preparation of Specimen: The floor structure shown in FIG. 1 was prepared. 12 mm
Acrylic emulsion-based adhesive is applied to plywood 4A with a thickness of 900 mm and a width of 1800 mm, and compounding formulation example No. 1
The non-vulcanized butyl-based sheet 5A having a thickness of 3 mm shown in FIG. Next, particle board 1A (9 mm thickness x 900 mm width x 180
0mm length), thickness 20mm, ground side diameter 51m
Anti-vibration protrusion member 2A made of vulcanized anti-vibration rubber having a hardness of 50 m
Is attached with a chloroprene adhesive, and the vibration-proof plate 7A (2
9 mm thick) was prepared.

However, the form of the vibration-proof projection member 2A is as shown in FIG.
The vibration-proof projection member 2H shown in FIG. Anti-vibration protrusion member 2H
Includes a main body 47 and a mounting portion 46 to the substrate. On the installation surface side of the main body 47, concentric circular protrusions 48, 49 and 50 are provided, and a concentric circular concave portion 52 is formed between the protrusions 48 and 49.
A circular recess 51 is formed on the inside. The protrusion 48 and the protrusion 49 are higher than the protrusion 50. At the time of initial installation, the protrusions 48 and 49 are in contact with the support structure or the substrate, and during vibration, the protrusion 50 is further in contact with the support structure or the substrate. The installation position of the anti-vibration protrusion member 2 is
It is shown in FIG.

The construction of Reference Example Example 1: floor precursor ALC (100
(mm thickness × 600 mm width × 1800 mm length) was laid, and a floor driving body 6 was produced. The damping plate 8A is attached to this with an acrylic emulsion adhesive. At this time, ALC
Was affixed in the direction orthogonal to the longitudinal direction. Then, a double-sided tape was attached to the surface of the vibration-proof projection member, and the vibration-proof plate 7A was fixed in the direction orthogonal to the longitudinal direction of the vibration-damping plate 8A to obtain a floor base material. The laminated cross section is shown in FIG.

[0050] Determination of Reference Example 1: hit the cutting line on the subfloor in Reference Example 1, as shown in FIG. 13, defining a striking point 35 of the four points, the excitation to the striking point of each four in Bang machine went. As shown in FIG. 14, the microphones 36 are placed at the five measurement points in the lower chamber at a height of 1.2 meters on the floor, and
The results measured according to Table 2 are shown in Table 2.

Example 1 Preparation of Specimen: A floor base material shown in FIG. 2 was prepared. 2.5
mm thickness x 900 mm width x 1800 length plywood 4A, 4B
2 pieces are prepared, and 0.27 mm is attached to one side of one plywood 4B.
The galvanized iron plate 10 having a thickness of 900 mm and a width of 1800 mm is attached with an epoxy adhesive, and the remaining one surface of the plywood 4B is
A stainless steel wire woven wire net 9 having a wire diameter of 0.1 mm was installed. In this state, it was sandwiched with the epoxy adhesive 41 and the other plywood 4A to obtain a plate-shaped body 15A having a thickness of about 5.5 mm.

On the other hand, the 5 mm thick polyester non-woven fabric was impregnated and foam-cured by impregnating the whole of the 5 mm-thick polyester non-woven fabric with the substance which is liquid at room temperature and foams and hardens at room temperature as shown in Formulation Example No. 2.
1 was produced. This is attached to the lower surface of the galvanized iron plate 10 with a butyl rubber adhesive, and the vibration damping plate 8B (10.5 mm thickness)
Got

Next, 9 mm thickness x 900 mm width x 1800
Plywood 1A having a length of mm was prepared. Hardness 40 inner diameter 5m
m, a tubular rubber 13 having an outer diameter of 25 mm is placed inside, and a tubular rubber 12 having an inner diameter of 25 mm and an outer diameter of 30 mm is formed on the outer side to produce a tubular two-layer vulcanized rubber having a thickness of 10 mm, and a vibration-proof protrusion. Member 2B was obtained. 14 is a cavity. The vibration-proof projection member 2B was fixed to the plywood 1A with a urethane-based liquid adhesive to obtain a vibration-proof plate 7B (19 mm thick). The allocation position of the vibration-proof projection member was the same as in Reference Example 1.

Construction of Example 1 : AL as in Reference Example 1
Damping plate 8B is provided on the C floor vehicle, and vibration damping plate 7B is provided on it.
Was installed and the floor base material was constructed. Measurement of Example 1 : Same as Reference Example 1.

Reference Example 2 Preparation of Specimen: A floor base material having a laminated structure shown in FIG. 3 was prepared. A vulcanized rubber crushed product and a rubber sponge crushed product were mixed and compression-molded using a -liquid curable urethane as a binder to prepare a molded body 17 having a thickness of 5 mm. On the lower surface of the molded body 17, a stainless steel wire woven wire net 9 having a wire diameter of 0.1 mm was attached to a plywood 4B having a thickness of 2.5 mm with an epoxy adhesive 41. Plywood 4A (thickness: 2.5 mm) was attached to the other surface of the molded body 17 with an epoxy adhesive to form a plate-shaped body 15B having a thickness of 11 mm. A non-vulcanized butyl rubber sheet 18 (3 mm thick) having a specific gravity of 2.7 shown in Formulation Example No. 3 is attached to the plate-like body 15B with butyl rubber paste, and the vibration damping plate 8C is used.
Made (14 mm thick).

Next, a compounding recipe example N was applied to a 7 mm thick non-woven fabric.
A non-woven fabric impregnated rubber sheet having a thickness of 8 mm was prepared by applying a substance that is liquid at room temperature and has room temperature curability as shown in o. Next, the non-woven fabric-impregnated rubber sheet was cut into a thickness of 8 mm × 50 mm × 200 mm to manufacture a rectangular parallelepiped vibration-proofing projection member 2C. Thickness 9
A vibration-proof projection member 2C was attached to the particle board 1A having a size of 1 mm at the same allocation position as in Reference Example 1 with butyl rubber paste to obtain a vibration-proof plate 7C (thickness: 17 mm).

Construction of Reference Example 2 : In the same manner as in Reference Example 1,
A vibration damping plate 8C was provided on the ALC floor vehicle, a vibration damping plate 7C was provided thereon, and a floor base material was applied.

Example 2 A floor base material shown in FIG. 4 was produced. Plywoods 4A and 4B having a thickness of 2.5 mm were fixed on the upper and lower sides of the paper honeycomb structure 19 (thickness of 5 mm) with an epoxy adhesive to form a hollow honeycomb plate-shaped body. 14 is a cavity. On the surface of the plywood 4B, a material that is liquid at room temperature and has a foaming hardening reaction at room temperature as shown in Formulation Example No. 2 is provided with a thickness of 3 mm and is cured, and the damping layer 2
1 was produced (thickness 13 mm).

Next, thickness 10 mm × width 25 mm × 1.8
A viscoelastic material layer 21 having a thickness of 13 mm was obtained by casting, foaming and curing the substance of the compounding formulation example 4 into a deformation suppressing member 20 made of an iron rod having a U-shaped cross section and a plate thickness of 0.5 mm. Then, a vibration-proof projection member 2D was obtained. Plywood 1A with a thickness of 12 mm
Then, the four vibration-proof protrusion members 21 were fixed with screws at a pitch of 200 mm to obtain a vibration-proof plate 7D (thickness: 25 mm).

Construction of Example 2 : In the same manner as in Reference Example 1,
A vibration damping plate 8D was provided on the ALC floor vehicle, a vibration damping plate 7D was provided thereon, and a floor base material was constructed.

Reference Example 3 A floor base material shown in FIG. 5 was produced. 2.5 mm thick plywood 4
A and the thermoplastic elastomer SIS-based sheet 22 (1.
5 mm thick) and 2.5 mm thick plywood 4B were attached to obtain a plate-shaped body 15D. Furthermore, compounding example No. was applied to the surface of plywood 4B.
Adhere the 1.5 mm thick non-vulcanized butyl rubber sheet 5 of 1,
An 8 mm thick damping plate 8E was made.

Next, on one side of the 5.5 mm plywood 1A, 5 m
A honeycomb structure 19 made of aluminum and having a thickness of m was provided, and the cavity of the honeycomb structure 19 was filled with the substance that was subjected to the room temperature reaction curing of the compounding formulation example No. 4 to generate a cured product 23. A plywood 1B having a thickness of 2.5 mm was attached to the other surface of the honeycomb structure to obtain a plate-shaped body 42A. Figure 1
The vibration-proof protrusion member 2H of No. 0 was provided on the side of the plywood 1B having a thickness of 5.5 mm to form the vibration-proof plate 7E having a thickness of 3.3 mm.

Construction of Reference Example 3 : A vibration-proof plate 7E was provided on the ALC floor vehicle, and a vibration-damping plate 8E was provided thereon to construct a floor base material.

Reference Example 4 Preparation of Floor Substrate: The damping plate 8E and the vibration damping plate 7E of Reference Example 3 were prepared. Furthermore, 96 K glass wool having a thickness of 20 mm was prepared, and a plurality of through holes each having a diameter of 50 mm were provided in a part of this glass wool to produce the sound absorbing material 24 having the shape shown in FIG. The anti-vibration projection members 2A were housed in the respective through holes of the sound absorbing material 24. The sound absorbing material 24 was attached to the plywood 1B with a spray paste to newly prepare a vibration damping plate 7F. In addition,
15E and 42B are plate-like bodies, and 8F is a damping plate.

Construction of Reference Example 4 : A vibration damping plate 7F was placed on the ALC of the floor structure so that the longitudinal directions were orthogonal to each other, and a vibration damping plate 8F was screwed onto the vibration damping plate 7F so that the longitudinal directions were orthogonal to each other. ,
Used as a floor base material.

(Example 3 ) Preparation of floor base material: thickness 10 mm x width 2.5 mm x 1.8
An iron rod having a U-shaped cross section and a plate thickness of 0.5 mm was prepared and used as a deformation suppressing member 20. In the vibration-proof plate 7A in Reference Example 1, on the vibration-proof protrusion member side of the substrate 1A,
Four deformation suppressing members 20 were fixed with screws at a 200 mm pitch. The damping plate used was the damping plate 8D of Example 2 (8G in FIG. 7). 15F is a plate-shaped body.

Construction of Example 3 : A vibration damping plate 7G was provided on the ALC of the floor precursor, and a vibration damping plate 8G was provided thereon to form a floor base material.

(Example 4 ) Preparation of floor base material: The floor base material shown in FIG. 8 was prepared. 5.
An aluminum foil 50 having a thickness of 100 μm is attached to one surface of a plywood 4 having a thickness of 5 mm with a urethane adhesive to form a plate-shaped body 15.
Got G. High specific gravity non-vulcanized butyl rubber sheet 18 (thickness: 2 m) shown in compounding formulation example No. 3 on aluminum foil 50.
m) was attached, and a vibration damping plate 8H (7.6 mm thick) was made.

Next, the square iron pipe 26 (20 mm thick x
(40 mm width x 1.8 m length) in the hollow part, compounding formulation example N
The normal temperature foam-hardening substance of o.2 was injected, foam-hardened, and filled with the hardened material 21 to obtain the deformation suppressing member 27. On the other hand, apply the substance of compounding recipe example No. 4 to a 2 mm thick non-woven fabric and
The m-thickness all-impregnated non-woven fabric 28 is formed, and the deformation suppressing member 27
On the underside of the, 300 mm with a size of 40 mm x 100 mm
I pasted it on the pitch. So that this sticking surface is on the outside
For each plywood 1 having a thickness of 5.5 mm, each vibration-proof projection member 2E
Was fixed with a screw at a pitch of 200 mm, and three pieces were fixed to one plywood 1 to form a vibration-proof plate 7H (27.5 mm thick).

Construction of Example 4 : A vibration damping plate 7H was provided on the ALC of the floor precursor, and a vibration damping plate 8H was provided thereon to form a floor base material.

Reference Example 5 Preparation of Specimen: A base material 45 made of a film and having alternating air chambers 29 and voids only in the film was used, and the room temperature foam curing shown in Formulation Example No. 2 was performed. The reactants are injected to alternately form the air chambers 29 and the foamed and cured products 21 on the same plane,
A base material 45 having a thickness of 4 mm was produced. 9mm thickness x 900mm
The base material 45 was bonded to the plywood 4 having a width of 1800 mm and a butyl rubber paste to form a vibration damping plate 8I having a thickness of 13 mm.

Next, the recesses 51 and 52 of the same vibration-proof protrusion member (vibration-proof protrusion member 2H in FIG. 10) as the sample tested in Reference Example 1 were used.
As shown in FIGS. 11 (a) and 11 (b),
O.4 room temperature curing reaction product is poured and cured to obtain a cured product 54.
Then, the vibration-proof projection member 2I was produced. This was used as the main body 31 of the vibration-proof projection member.

Next, a through hole 30 having a diameter of 2 mm was made in the vibration isolating direction of the vibration isolating rubber main body 31 in a direction orthogonal to the vibration exciting body 31 to form a vibration isolating projection member 2F. 9mm thickness x 900mm width x 180
The vibration-proof protrusion member 2F was attached to the particle board 1 having a length of 0 mm to prepare a vibration-proof plate 7I having a thickness of 29 mm.

Construction of Reference Example 5 : A vibration-proof plate 7I was provided on the ALC of the floor precursor, and a vibration-damping plate 8I was provided thereon to obtain a floor base material.

[0075] In the state of (Comparative Example 1) Example 1-4 and ALC floor precursor of Reference Examples 1 to 4 was measured similarly as in Reference Example 1. In addition, Examples 1 to 4
In each of Reference Examples 1 to 4 and Comparative Example 1, the bottom of the floor precursor is 50
One mm glass wool gypsum board 12.5 mm thick is provided.

[0076]

[Table 1]

[0077]

[Table 2]

[0078]

As can be seen from these results, the present invention
If so , the floor base material and the predetermined damping plate have different hardness.
And a vibration-proof plate with a plurality of vibration-proof protrusions
Each of the vibration-proof protrusion members made of different hardness
The excitation force peak is greatly reduced by the above, and the heavy floor impact sound is greatly improved over a wide frequency range. Ah
In addition, according to the present invention, the floor base material has a predetermined vibration damping property.
Equipped with a plate, a plurality of anti-vibration protrusion members and a predetermined deformation suppression member
The anti-vibration plate is laminated to form a plurality of
The vibration-proof protrusion reduces the peak of the excitation force and
The deformation suppression member increases the flexural rigidity of the board of the anti-vibration plate,
Wider frequency range because it further enhances the anti-vibration effect of the plate
Over, heavy floor impact sound is significantly improved.

[Brief description of drawings]

FIG. 1 is a laminated cross-sectional view of a floor base material of Reference Example 1 of the present invention.

FIG. 2 is a laminated cross-sectional view of a floor base material of Example 1 of the present invention.

FIG. 3 is a laminated cross-sectional view of a floor base material of Reference Example 2 of the present invention.

FIG. 4 is a laminated sectional view of a floor base material of Example 2 of the present invention.

FIG. 5 is a laminated cross-sectional view of a floor base material of Reference Example 3 of the present invention.

FIG. 6 is a laminated cross-sectional view of a floor base material of Reference Example 4 of the present invention.

FIG. 7 is a laminated cross-sectional view of a floor base material of Example 3 of the present invention.

FIG. 8 is a laminated cross-sectional view of a floor base material of Example 4 of the present invention.

FIG. 9 is a laminated sectional view of a floor base material of Reference Example 5 of the present invention.

10A is a bottom view of the vibration-proof protrusion member 2H used in Example 3 and Reference Examples 1 , 3, and 4 , and FIG. 10B is a cross-sectional view of the vibration-proof protrusion member 2H.

FIG. 11 is a schematic view of a vibration-proof protrusion member 2I used in Example 5 . (A) is a bottom view of the ground plane side,
(B) is a cross-sectional view.

FIG. 12 is an allocation view of a vibration-proof protrusion on the back surface of the vibration-proof plate.

FIG. 13 is a diagram showing striking points of a floor base material.

FIG. 14 is a plan view showing a microphone position which is a sound receiving point in a sound receiving room.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-4015 (JP, A) JP-A-7-82866 (JP, A) JP-A-6-240851 (JP, A) Actual Kaihei 4- 82247 (JP, U) Actual development Sho 61-184040 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04B 1/62-1 / 92,1 / 98,1 / 99 E04B 5/43 E04F 15/18

Claims (6)

(57) [Claims] 1. A floorboard and a building support structure for supporting the floorboard, wherein the floorboard comprises a floor base material, and
A building equipped with a decorative board laid on the floor base material
In a floor structure of a structure, a floor base material to be laid on the support structure is a first plate-like body having rigidity and a viscous material provided on at least one surface of the first plate-like body. A damping plate having a damping layer made of an elastic body, a second plate-like body having rigidity, and a plurality of elastic vibration-proof projection members provided on at least one surface of the second plate-like body And a vibration-proof plate in which the plurality of vibration-proof protrusion members are separated from each other, and the vibration-proof protrusion members are the plates.
Propagation of the vibration of the body to the damping plate and the floor frame below it
The vibration-proof protrusion member is formed of an elastic body, a viscoelastic body, or a foam body having different hardnesses in a direction perpendicular to the pressing direction of the floor impact. anti-oscillation plate and are stacked, and wherein the Rukoto reduced weight floor impact sounds, buildings
Floor structure. 2. A floorboard and a building support structure for supporting the floorboard, wherein the floorboard is a floor base material, and
A building equipped with a decorative board laid on the floor base material
In a floor structure of a structure, a floor base material to be laid on the support structure is a first plate-like body having rigidity and a viscous material provided on at least one surface of the first plate-like body. A damping plate having a damping layer made of an elastic body, a second plate-like body having rigidity, and a plurality of elastic vibration-proof projection members provided on at least one surface of the second plate-like body And a plurality of anti-vibration protrusion members are provided apart from each other, the anti-vibration protrusion member is installed to the support structure or the damping plate, the second The plate-shaped body of claim 1 includes a substrate made of a rigid material, and the vibration-proof projection member includes a deformation suppressing member that suppresses deformation of the substrate when a heavy floor impact is applied to the substrate. suppression member is composed of elongated composed of a rigid material, in this elongated material, rubber Vibration isolation material made of foam or fibrous material is provided, the vibration insulation
The strip is in contact with the support structure or other substrate, and the damper plate the and the anti-oscillation plate are laminated, and wherein the Rukoto reduced weight floor impact sounds, buildings
Floor structure. 3. A floorboard and a building support structure for supporting the floorboard, wherein the floorboard is a floor base material, and
A building equipped with a decorative board laid on the floor base material
In a floor structure of a structure, the floor base material to be laid on the support structure is composed of a rigid first plate-like body and a first plate-like body
Damping layer made of viscoelastic material provided on one surface
With a damping plate and a rigid second plate and a second plate less
Multiple anti-vibration bumps made of elastic material on one side
And a plurality of anti-vibration protrusion members separated from each other.
The vibration-proof plate, and
It is installed to the holding structure or the damping plate,
The second plate-shaped body is provided with a substrate made of a rigid material.
The substrate, when the heavy floor impact is applied to the substrate,
It is equipped with a deformation suppression member that suppresses the deformation of the substrate.
The deformation suppressing member is made of a long material made of a rigid material,
The deformation suppressing member is provided on the side of the vibration-proof protrusion member.
And a vibration damping plate and the vibration damping plate are laminated to reduce a heavy floor impact sound.
Floor structure. 4. The first plate-shaped body and the second plate-shaped body
However, if a substrate made of a rigid material is used and a heavy floor impact is applied to the substrate,
A deformation suppressing layer that suppresses deformation of the substrate when added
The deformation suppressing layer is made of mesh, woven cloth, or gold.
Any of claims 1-3, characterized in that it comprises a metal foil.
A floor structure for a building according to claim 1. 5. The first plate-shaped body and the second plate-shaped body
However, if a substrate made of a rigid material is used and a heavy floor impact is applied to the substrate,
A vibration absorbing layer that absorbs the vibration of the substrate when applied
And the vibration absorbing layer is one of (a)-(b)
Any one of claims 1-3, characterized in that
Floor structure of a building according to one claim. (A) It is liquid at room temperature in the hollow part of the corrugated cardboard.
Cured product of a substance that undergoes a curing reaction or foaming curing reaction at room temperature
Corrugated cardboard filled with (b) Hollow extrusion cement
A substance that is a substance that undergoes a curing reaction or foaming curing reaction at room temperature
Hollow extruded cement board filled with hardened material 6. The damping layer is selected from (c)-(f).
6. The method according to claim 1, which is characterized in that
Floor structure of a building according to one claim. (C) Recycled butyl rubber is contained in an amount of 30 wt% or more of the rubber component.
Non-vulcanized rubber (d) that is liquid at room temperature and cures or foams at room temperature.
The cured product (e) of the substance that undergoes the chemical reaction is preliminarily opened in the fiber layer with a punching die in any size and shape.
It is liquid at room temperature and hardens at room temperature.
(F) a sheet-like material filled with a substance that reacts or foams and cures, comprising a substrate and a cured product layer
The base material is made of a resin film, and
The chambers are separated from each other and between the adjacent air chambers
Each has a void portion, the cured product layer,
It is liquid at room temperature and cures or foams at room temperature
Consisting of a cured product of a substance that
Filled, sheet-like material.