JP2003096961A - Floor structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor structure proper for two or more stories of floors of a housing system burdening horizontal shear force applied to a horizontal frame and having the excellent barrier properties of a floor impulsive sound. SOLUTION: In the floor structure of a building, sound-insulating structural materials 1 are fitted and supported into the horizontal frame without being brought into contact with an underfloor spread material 4, and are fixed so as to be able to burden horizontal shear force applied to the horizontal frame for the building in the horizontal frame assembled by a floor joist for the building. Sound-insulating properties to a heavy impulsive sound and a lightweight impulsive sound are improved, and the horizontal rigidity of building itself can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a building, and more particularly to a floor structure suitable for floors of the second floor and above in residential buildings.

[0002]

2. Description of the Related Art In recent years, wooden flooring finish floors have increased, multi-family homes have increased, and the introduction of the "Housing Performance Indication System" under the "Housing Quality Assurance Promotion Law" has led to downstairs not only in collective housing but also in individual housing There is an increasing need for floor noise control.

In a wooden-based housing structure, lightweight cellular concrete (hereinafter referred to as ALC) is used as a heavy material on a floor subfloor.
(Hereinafter referred to as ") is used to mitigate heavy impact noise.

Further, as disclosed in Japanese Patent Laid-Open No. 9-88324, the surface weight is 5 to 20 kg / m ² on the lower side of the wooden floor.
Another example of the prior art is a composite soundproof floor in which the plate-like body is arranged without being fixed to the wooden floor.

[0005]

However, the above-mentioned floor structure using ALC as a heavy material alone cannot be expected to have a great effect on light impact sound. In order to compensate for this, there is a case where a sound-absorbing floor with a high cushioning property provided with a resin foam under the flooring material is used together, but this sound-insulating floor is expensive, and the cushioning works so that it is extremely uncomfortable when walking. There is a problem that you may feel.

Further, in the composite soundproof floor in which the plate-like body is arranged without being fixed to the wooden floor, the plate-like body is positioned only by placing it naturally, so that it is uncomfortable when a floor impact is received or an earthquake occurs. There is a possibility that noise may be generated and the plate-shaped body may be displaced from its original position. In addition, if an attempt is made to widen the space between the plate and the wooden floor in order to further improve the sound insulation performance, the plate will interfere with the striking beam for the purpose of bearing the horizontal shearing force applied to the horizontal frame, and the plate will be damaged. There is a problem that installation becomes difficult.

An object of the present invention is to provide a floor structure suitable for a floor of a second floor or higher in a residential system which bears a horizontal shearing force applied to the horizontal frame and is excellent in blocking floor impact noise.

[0008]

The floor structure of the present invention has solved many of the above-mentioned problems of the prior art. The gist of the first invention of the floor structure is that it is assembled by the floor joists of the building. In a horizontal framework, a sound insulation structure is fitted and supported in the horizontal framework without contacting the floor underlaying material, and the sound insulation structure is fixed to the horizontal framework of the building. Is.

The sound-insulating structural material mentioned here is a face material or a panel provided in the horizontal framework below the underfloor for the purpose of bearing the horizontal shearing force applied to the horizontal framework and reducing floor impact noise. Refers to.

The underfloor material described here refers to structural plywood / particle board or structural panel that is joined to the upper surface of the floor joist with nails or screws.

In the first aspect of the floor structure described above, since the sound insulation structure is fitted and supported in the horizontal frame without contacting the underfloor, solid propagation sound due to floor impact sound is reduced and air propagation is reduced. The sound absorbing space is increased, and the sound insulation performance against heavy impact sound and light impact sound is improved.

Further, since the sound insulation structure is fixed so as to bear the horizontal shearing force applied to the horizontal framework of the building, the horizontal rigidity of the building itself can be increased.

The gist of the second invention of the floor structure of the present invention is that the sound insulation structure material in the floor structure of the first invention is a wood-based panel.

Here, the wood-based panel includes plywood, particle board, structural panel, fiber board, and a laminate mainly composed of plants.

According to the second aspect of the present invention, the sound insulation structure can be fixed to the floor joists by the nail or screw construction, and the construction can be performed easily and the quality can be stabilized and the strength can be maintained.

A third aspect of the floor structure of the present invention is that the sound insulation structure material in the floor structure of the first aspect is a ceramic panel.

Here, the ceramics-based panel means an ALC panel, an extrusion molded board, a wood-based cement board, a ceramics-based siding, a slate, a wood wool cement laminated board, a fiber reinforced cement board and the like.

In the third aspect of the invention, since the sound insulation structure material is a ceramic panel, it is possible to provide fireproof performance required for an apartment house. This allows it to be used in apartment buildings and other buildings requiring fire resistance and fire protection.

The gist of the fourth invention of the floor structure of the present invention is that the sound insulation structure material in the first invention is "a bearing surface material of a non-combustible material or a semi-combustible material". This allows it to be used in apartment buildings and other buildings requiring fire resistance and fire protection.

Here, the non-combustible material is a material described in Article 108-2 of the Building Standard Act Construction Ordinance and Notification No. 1400 of 2000. The semi-incombustible material is a material described in 2000 Notification No. 1401. The bearing surface material is a surface material described in Notification No. 1100 of 1981. Specific examples of the "bearing surface material of noncombustible material or quasi-incombustible material" include flexible board, asbestos perlite board, pulp cement board, calcium silicate board, volcanic glassy multi-layer board, and gypsum board.

A fifth aspect of the floor structure of the present invention is that in any one of the first to fourth aspects of the floor structure, at least one of the upper surface and the lower surface of the sound insulation structure has a specific gravity of 1.0 or more, A sheet-like material of 10.0 or less is provided.

In the fifth invention, at least one of the upper surface and the lower surface of the sound insulation structure has a specific gravity of 1.0 or more, and 1
By providing a sheet-like material of 0.0 or less, the bending vibration of the sound insulation structure material due to the floor impact sound of the upper floor material is suppressed, the generation of airborne sound due to this bending vibration is suppressed, and the floor impact sound to the downstairs is reduced. Let

The sheet material in this case is preferably a lead sheet, a rubber sheet, a soft polyvinyl chloride sheet, an asphalt sheet, a sheet in which a high-density granular material is mixed with a synthetic resin, or the like.

A sixth aspect of the floor structure of the present invention is that the sound insulating structure is a plurality of layers of a heavy layer and a light layer in the floor structure of any one of the first to fifth inventions.

In the sixth aspect of the present invention, the sound insulation structure is made up of a plurality of heavy layers and light weight layers to suppress bending vibration of the sound insulation structure due to floor impact sound of the upper floor material.
The generation of airborne sound due to this bending vibration is suppressed, and the floor impact sound downstairs is reduced. Also, when mortar or concrete is installed between the sound insulation structure and the floor joists, the horizontal shearing force applied to the horizontal framework of the building can be more reliably transmitted to the sound insulation structure, increasing the horizontal rigidity of the building itself. be able to.

The gist of the seventh invention of the floor structure of the present invention is that, in any of the first to sixth inventions,
A heavy material is provided on the underfloor material.

According to the seventh aspect of the present invention, by providing a heavy material on the floor subbing material, the individual propagation sound transmitted to the floor joists is reduced, and the bending vibration of the sound insulation structure material fitted and supported by the floor joists is suppressed. The floor impact sound transmitted downstairs.

In this case, the weight material is preferably mortar, concrete (including lightweight concrete and cinder concrete), gypsum-based self-leveling material, ALC, gypsum board or sound insulation sheet.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the floor structure of the present invention will be described below with reference to the drawings. The structural types of buildings applicable to the present invention are generally wooden and steel structures. FIG. 1 is a perspective view (partially cutaway perspective explanatory view) of the present invention in which a sound insulation structure 1 is arranged on a floor joist in a wooden frame construction method. FIG. 2 shows an embodiment of the present invention in the wooden frame construction method, and is an enlarged vertical cross-sectional view of the main part of the floor structure, showing the sound insulation structure 1 joined to the plate 3b. FIG. 3 shows another embodiment of the present invention in the wooden frame construction method, which is an enlarged vertical cross-sectional view of the main part of the floor structure, and is a view when the sound insulation structure 1 is joined to the square members 3c. FIG. 4 shows still another embodiment of the present invention in the wooden frame construction method, and is an enlarged vertical cross-sectional view of the main part of the floor structure, showing the sound insulation structure 1 joined to the square bar 3c. FIG. 5 shows an embodiment of the present invention in a steel frame structure, and is an enlarged vertical cross-sectional view of a main part of a floor structure, showing a case where the sound insulation structure 1 is joined to the sound insulation structure joist 3a. . FIG. 6 shows an embodiment of the present invention in a steel frame structure, and is an enlarged vertical cross-sectional view of a main part of a floor structure when the sound insulation structure 1 is joined to a plate 3b.

In the embodiment shown in FIGS. 1 and 2, a plurality of floor joists 2A are arranged at predetermined intervals. Floor joist 2
A sound insulation structure 1 is arranged between the lower end sides of A, and is fixed to the floor joist 2A via square members 3c and screws 7. On the upper end of the floor joist 2A, a subfloor upholstery material 4 is placed and fixed by nails 8.

Therefore, the sound insulating structure 1 is fitted and supported between the floor joists 2A without contacting the underfloor 4, and is fixed to the horizontal framework of the building. Therefore, the sound insulation structure 1 can bear the horizontal shearing force acting on the floor joist 2A.

Further, a floor finish material 5 is provided on the upper part of the floor subfloor material 4.
Is laid and is attached to the floor underlayment 4 in an optimal manner.

The sound insulation structure 1 used in the present invention is a nail,
A wood-based panel (plywood, particle board, structural panel, fiber board, laminate having grass and grass as a main constituent) that can be screwed and has excellent workability is preferable in terms of construction.

Further, in order to improve the fire resistance of the floor structure, the sound insulating structure 1 is made of a ceramic panel (ALC panel, extruded board, wood cement board, ceramic siding, slate, wood wool cement laminate, Fiber-reinforced cement boards) are preferably used. A flexible board, an asbestos perlite board, a pulp cement board, a calcium silicate board, a volcanic vitreous multi-layer board, a gypsum board, etc., which are non-combustible materials or semi-incombustible materials, are also preferable.

The sound-insulating structure 1 has a role of blocking the air-borne sound caused by the vibration of the upper floor material and a role of bearing the horizontal shearing force applied to the horizontal framework of the building, and has a high in-plane rigidity. preferable. As an example, it is a face material described in Notification No. 1100 of 1981.

Considering that a person is placed during the construction, it is preferable that the thickness of the sound insulating structure 1 is such that the “thickness / span” ratio is 6/1000 or more. Alternatively, it is preferable that the sound insulation structure 1 has a bending rigidity such that the maximum deflection thereof is 1/100 or less of the span when a load is applied by a person during construction (for example, a loading load of 1765 N / m ² ).

As the method of attaching the sound insulation structure 1 to the floor joist in the wooden frame construction method, as shown in FIG.
A typical method is to screw the sound insulation structure material 1 to the joist 3a for sound insulation structure material that is screwed to the lower surface of A.
2 (a method of using the plate material 3b as a base for a sound insulation structure), FIG.
There is also a method such as (method of using the square bar 3c as a base for a sound insulating structure). As shown in FIG. 4, a sound insulating structure material may be screwed under the square member 3c.

The joist 3a for the sound insulation structure, the plate 3b, and the square 3c, which are the base of the sound insulation structure 1, are nailed or screwed to the floor joist 2A. At this time, an adhesive may be used together to enhance the integrity. For the same reason, the sound insulating structure 1 and its base are also nailed or screwed, but an adhesive may be used together.

In the steel frame structure, the sound insulation structure 1 is attached to the floor joist in the same manner as the wooden frame construction method as shown in FIG. 5 in which the sound insulation construction 1 is joined to the sound insulation construction joist 3a screwed to the lower surface of the floor joist 2B. Is a typical one. There is also a method of FIG. 6 in which the plate material 3b is used as a base for a sound insulating structure. Floor joist 2B and sound insulation structure joist 3a, which is the base of sound insulation structure 1, plate 3
For b, screws are used. At this time, an adhesive may be used together to enhance the integrity. The sound insulation structure 1 and the base thereof are nailed or screwed, but an adhesive may be used together to enhance the integrity.

Regardless of the structural type of the building, it is essential that the sound insulation structure 1 is fitted and supported in the horizontal frame without contacting the underfloor 4, and it is not necessary to be limited to the above-mentioned accommodation.

Further, the joist 3a for sound insulation structure, the plate 3b,
As the material of the square members 3c, metals, resins, cement-based materials and wood materials having excellent durability are preferable. Among them, wood materials or thin metal having excellent screwability and workability are more preferable. Of course, if the material is easy to join to the floor joists, it is not necessary to be restricted to the above.

The sound insulation structure 1 is installed at floor joists 2A,
A floor 2B (hereinafter, a representative floor joist 2A) can be structurally regarded as an inverted T-beam, and a driving point impedance that greatly affects floor impact sound can be increased to promote improvement in sound insulation. The lower part of the joist 2A is preferably below the half position in the vertical direction. Further, by widening the space between the underfloor 4 and the sound insulating structure 1, the sound absorbing space for the air-borne sound is increased and the sound insulating property is improved. Also, underfloor material 4
Since the sound insulation structure 1 and the sound insulation structure 1 can bear the horizontal shearing force applied to the horizontal framework at the same time, it is preferable to install them above and below the floor joist 2A in terms of structural balance.

Since the sound insulation structure 1 is installed above the half position of the floor joist 2A in the vertical direction, the driving point impedance and the sound absorbing space are reduced. It cannot be expected to improve the sound insulation as much as when installed below the position. However, unless the underfloor material 4 and the sound insulating structure material 1 are in contact with each other, the sound insulating property can be expected to be improved. Moreover, the ceiling pocket can be made small by installing the sound insulation structure 1 above the floor joist 2A. This means that the floor height of the building can be lowered or the ceiling height of the room on the lower floor can be increased.

The position of the sound insulation structure 1 should be determined in consideration of the degree of sound insulation improvement, the floor height, and the ceiling height of the room below.

The sound-insulating structural material 1 causes bending vibration due to the floor impact sound of the upper floor material, and this bending vibration causes air-borne sound to be transmitted to the downstairs. In order to suppress bending vibration of the sound insulation structure 1, it is effective to make the structure of the sound insulation structure 1 into a multi-layer structure of a heavy layer and a light weight layer.
It is preferable to provide a sheet-shaped material having a specific gravity of 1.0 or more and 10.0 or less on at least one of the upper surface and the lower surface of the sound insulating structure 1. The sheet material in this case is a lead sheet, a rubber sheet, a soft polyvinyl chloride sheet, an asphalt sheet,
A sheet obtained by mixing a high density granular material with a synthetic resin is suitable.

Placing mortar or concrete on the upper surface of the sound insulation structure 1 is also effective in suppressing bending vibration. In addition, it is also possible to suppress bending vibration by stacking multiple layers of <ceramic-based panel and “bearing surface material of non-combustible material or quasi-non-combustible material”> because it has a multi-layer structure of heavy layers and lightweight layers. Is effective in.

Between the sound insulation structure 1 and the floor joist 2A, 5 to 50
It is possible to more reliably transmit the horizontal shearing force applied to the horizontal frame of the building to the sound insulation structure 1 by increasing the space between the mm and filling the gap with mortar or the like, thereby increasing the horizontal rigidity of the building itself. It is effective.

Providing a heavy material on the underfloor 4 reduces the sound propagated to the floor joist 2A, suppresses the bending vibration of the sound insulation structure 1 supported by being fitted into the floor joist 2A, and downstairs. Reduces floor impact sound transmitted to. In this case, the weight material is preferably mortar, concrete (including lightweight concrete and cinder concrete), gypsum-based self-leveling material, ALC, gypsum board or sound insulation sheet. In addition, each preferably has a weight of 10 kg / m ² or more, and when the face material and the panel are made of a heavy material, a plurality of sheets can be stacked to secure the weight.
If gypsum board is used as a heavy material, wooden face material (plywood, particle board or structural panel) should be used to prevent concentrated load and accidental wetting. It is desirable to install it during the period.

[0049]

As described above, since the floor structure of the present invention has the above-described structure and operation, it has the following great effects.

Since the sound insulation structure is fitted and supported in the horizontal frame without contacting the underfloor, solid propagating sound due to floor impact sound is reduced, sound absorbing space of air propagating sound is increased, and heavy impact sound and light weight. Since the sound insulation against impact sound is improved and the sound insulation structure is fixed so as to bear the horizontal shearing force applied to the horizontal framework of the building, the horizontal rigidity of the building itself can be increased.

Wood-based panels (plywood, particle board, structural panel, fiber board,
When using a layered product whose main constituents are vegetation,
The sound insulation structure can be fixed to the floor joists by the nail and screw construction, and the construction can be performed easily and the quality can be stabilized and the strength can be maintained.

Further, the ceramic panel (AL
When using C panel, extruded board, wood cement board, ceramic siding, slate, wood wool cement board, fiber reinforced cement board), it must have the fire resistance and fireproof performance required for apartment houses, etc. it can.

When a non-combustible material or a semi-combustible material bearing surface material is used for the sound insulation structure, it is possible to provide the fire resistance and fire protection performance required for an apartment house or the like.

When a sheet-shaped material having a specific gravity of 1.0 or more and 10.0 or less is provided on at least one of the upper surface and the lower surface of the sound insulation structure, the sound insulation structure is bent by the floor impact sound of the upper floor material. Vibration is suppressed, and the airborne sound due to this bending vibration is suppressed to further reduce the floor impact sound to the downstairs.

When mortar or concrete is placed on the sound insulation structure material, bending vibration of the sound insulation structure material due to floor impact sound of the upper floor material is suppressed, and air propagation sound due to this bending vibration is suppressed. Reduce floor impact sound to. Moreover, since mortar and concrete are provided between the sound insulation structure and the floor joists, the horizontal shearing force applied to the horizontal frame of the building can be transmitted to the sound insulation structure more reliably, and the horizontal rigidity of the building itself is increased. You can

When a heavy material is provided on the underfloor material, the individual sound transmitted to the floor joists is reduced, and the bending vibration of the sound insulation structure supported by being fitted into the floor joists is suppressed, so that Further reduce the floor impact sound transmitted.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective explanatory view of a floor structure showing an embodiment of the present invention in a wooden frame construction method, and is a view when a sound insulation structure 1 is joined to a sound insulation structure joist 3a.

FIG. 2 shows an embodiment of the present invention in a wooden frame construction method, and is an enlarged vertical cross-sectional view of a main part of a floor structure when the sound insulation structure 1 is joined to a plate 3b.

FIG. 3 shows an embodiment of the present invention in a wooden frame construction method, and is an enlarged vertical cross-sectional view of a main part of a floor structure when the sound insulation structure 1 is joined to a square 3c.

FIG. 4 shows an embodiment of the present invention in a wooden frame construction method, and is an enlarged vertical cross-sectional view of a main part of a floor structure when the sound insulation structure material 1 is joined to a square material 3c.

FIG. 5 shows an embodiment of the present invention in a steel frame structure, and is an enlarged vertical cross-sectional view of a main part of a floor structure when the sound insulation structure 1 is joined to the sound insulation structure joist 3a. is there.

FIG. 6 shows an embodiment of the present invention in a steel frame structure, and is an enlarged vertical cross-sectional view of a main part of a floor structure when the sound insulation structure material 1 is joined to a plate material 3b.

[Explanation of symbols]

1 Sound insulation structure 2A floor joist (wooden) 2B floor joist (steel frame construction) 3a joist for sound insulation structure 3b Plate material 3c square timber 4 Underfloor material 5 floor finishing materials 7 screws 8 nails

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) E04B 1/86 E04B 1/86 PF term (reference) 2E001 DE01 DF02 DF06 DF07 EA08 FA13 GA01 GA12 GA24 GA42 HA01 HA04 HA05 HA07 HA21 HB06 HC02 HC04 HC11 HD13 HE01 HE03 HF14

Claims (7)

[Claims] 1. A horizontal frame structure assembled by a floor joist of a building, wherein the sound insulation structure material is fitted and supported in the horizontal frame structure without coming into contact with the underfloor material, and the sound insulation structure material is attached to the horizontal frame structure of the building. A floor structure of a building characterized by being fixed. 2. The floor structure according to claim 1, wherein the sound insulation material is a wood-based panel. 3. The floor structure according to claim 1, wherein the sound insulation structure material is a ceramic panel. 4. The floor structure according to claim 1, wherein the sound insulation structure material is a bearing surface material made of a non-combustible material or a semi-combustible material. 5. The sheet-like material having a specific gravity of 1.0 or more and 10.0 or less is provided on at least one of the upper surface and the lower surface of the sound insulation structure material, according to any one of claims 1 to 4. Floor structure. 6. The floor structure according to any one of claims 1 to 5, wherein the structure of the sound insulation structure has a plurality of structures of a heavy layer and a light layer. 7. The floor structure according to claim 1, wherein a weight material is provided on the floor subbing material.