JP2698783B2 - Soundproof joists and 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 floor structure of a building in which a floor is constructed by a joist. More specifically, in a building such as a steel structure, a wooden structure or a concrete structure, a sound generated on an upper floor side is generated. The present invention relates to a soundproof joist used for constructing a floor so as not to propagate to the floor side.

[0002]

2. Description of the Related Art Life sounds generated on the upper floor include a human voice, television and stereo sounds, movement of a chair, and sounds of a person walking. These include a sound that propagates in the air and a solid sound that is generated by vibrating a building such as a floor vibrating. In the conventional floor structure of a conventional building, in a conventional wooden house, the upper floor is made of plywood, particle board, etc. on a joist orthogonal to a plurality of beams that are almost integrated with the wall. And finish the floor with tatami or carpet on it, or fix the flooring, which is a floor finishing material, directly on the joist. On the lower floor side, a ceiling material is directly attached to the beam, or a ceiling material is attached to a field edge attached to a hanging tree suspended from the beam. Further, in a framed wall construction house, a floor joist having a larger cross section than that of the conventional construction method which serves as a joist and a beam having the above structure is used, and has the same configuration. Even if there are some differences in the materials used in steel-framed buildings, the basic configuration is almost the same as these.

[0003] When floor vibrations are directly generated by walking or the like on the upper floor side of the floor of the joist structure or air noise is generated and the floor is vibrated, resonance occurs in the space between the upper floor floor and the lower floor ceiling. It is amplified and causes vibrations in the ceiling material to generate sound. On the other hand, floor vibration vibrates joists, beams, walls, etc., and is transmitted to the lower floor as solid sound. The noise generated on the lower floor is a composite of these sounds.

[0004] In order to reduce the above-mentioned noise even a little, an elastic material is attached to a hanging tree that suspends the ceiling, a method is used in which the ceiling is not suspended from the beam so that the beam and the ceiling are not integrated, And other measures have been taken.

[0005] However, the above method cannot provide high soundproofing performance by itself, and when high soundproofing performance is required, it is very complicated to combine several methods. Was something.

A double floor structure is also well known as a floor structure of a building. This double-floor structure is mainly used for floors of middle and high-rise buildings and condominiums, etc., and a plurality of supports are used to dispose a floor base material on a floor base composed of a concrete floor slab surface, an ALC floor surface, and the like. A space is formed in the space. This space has an advantage that it can be used as a space for electric wiring and water supply piping, and that these works are easy.

In this case, as a support for the floor base material, a metal leg or a resin leg having a screw structure so that the height can be adjusted is already on the market. It is common to provide a vibration absorber such as the above. On the other hand, there is also a method in which a foamed resin plate is spread over the entire surface of the floor base below the base material of the floor, and a cutout portion is formed only in a portion requiring piping.

However, in the case of a double floor using the above metal legs or resin legs, extremely low hardness rubber or the like is used for the vibration absorber in order to obtain soundproofing performance, so that the floor must be finished softly. . As a result, there was a problem in the livability, for example, the floor might feel like sinking when walking. Further, in the method using the foamed resin plate, although the livability is solved to some extent, there is a problem that sufficient soundproof performance cannot be obtained. On the other hand, before the double floor structure provided with soundproofing performance, the joist was mainly laid on the floor base and the floor was finished on it. This was excellent in workability and walking feeling apart from the biggest drawback of no soundproofing performance.

In view of the above problems, rubber and locks are disclosed as disclosed in Japanese Utility Model Laid-Open Publication No. 57-84235 and "Standards for Sound Insulation Performance of Buildings and Design Guidelines" published in 1979, etc. Although a soundproof joist using wool as a cushioning material has been proposed, it has been found that soundproofing performance that meets current requirements cannot be obtained and that there are problems with some materials used as cushioning materials. In other words, when glass wool or rock wool is used as a cushioning material for floors subjected to repeated loads for a long period of time, it often buckles or powders and lacks durability, and the use of rubber or plastic foam is When a load greater than the design is applied for a long period of time, it often collapses. In this case, it is difficult to restore even if the load is removed, and there is a problem that almost no soundproofing performance can be expected in the collapsed state.

Further, Japanese Utility Model Laid-Open No. 3-123038 has been proposed. As is clear from the embodiment, when a rubber foam or a non-woven fabric is used, the soundproof performance is lower than that of a structure using no such material. Also has little improvement and L class is 60-6
In the situation where the soundproofing performance is variously discussed, such as today, the L class is 65 or 70 even in a floor configuration having no soundproofing performance as in the comparative example of Japanese Utility Model Laid-Open No. 3-123038. Considering that, the use of rubber or non-woven fabric cannot be said to be an effective anti-vibration joist.
Further, according to the results of the research conducted by the present inventors for many years, such a nonwoven fabric is used in a nonwoven fabric made of an extremely commonly used nonwoven fabric having a relatively straight fiber.
It has been found that the results are as in the thirty-eighth embodiment.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a joist for reducing floor vibrations from being transmitted to beams and walls in order to reduce solid sounds caused by floor vibrations. Another object of the present invention is to provide a floor structure that is excellent in soundproofing performance and excellent in comfort.

The present inventors have conducted intensive studies on the floor structure of a building and the propagation of sound from the upper floor to the lower floor in order to solve the above-mentioned problems , and have found that a specific type and specific floor joist are used .
By providing those having a more nonwoven layers one layer having a thickness the same as or different rigid layer one or more layers of, without impairing the walking sense of flooring, moreover, an excellent effect in improving soundproof performance I found a floor structure that works.

That is, the present invention relates to the same or different 3-50 m
a soundproof joist material comprising at least one nonwoven fabric layer using m-thick crimped fibers and at least one high-rigidity layer of the same or different kind; As a joist, a load-bearing joist material capable of holding the entire floor load, and 3 to 50 of the same or different types laminated thereon.
A soundproof floor structure characterized by using a soundproof joist material composed of at least one nonwoven fabric layer using a crimp-type fiber having a thickness of 1 mm and at least one high-rigidity layer of the same or different kind; A double structure having a floor via a joist, wherein the joist is at least one layer of a non-woven fabric layer using the same or different crimped fibers having a thickness of 3 to 50 mm and at least one layer of a high rigidity layer of the same or different type. Soundproofing double floor structure characterized by comprising a; Oyo
And a floor with a plurality of joists placed on the floor base
Heavy structure, whose joist is the same or different 3-50m
of the same type as one or more nonwoven fabric layers using crimped fibers having a thickness of m
Is composed of one or more layers of different types of high-rigidity layers.
Is less than 60% of the floor base
Sound double floor structure;

Hereinafter, the present invention will be described in detail. The soundproof joist material of the present invention comprises a specific nonwoven fabric layer and a highly rigid layer. Since this soundproof joist has an effect of reducing floor impact sound, even if it has been said that it is very difficult to use it as a finishing material for improving a light floor impact sound as a floor surface finishing material in the past. What can be used is noteworthy. For example, an inorganic flooring material such as a wooden flooring material such as a single-layer flooring and a composite flooring, and a stone material can be used. Of course, it does not preclude the use of a finishing material such as carpet, tatami mat, cork, linoleum and the like, which itself has a light floor impact sound improving performance. In addition, those that can be directly fixed to the joists, such as a single-layer flooring and a composite flooring, can be fixed as they are, and a highly effective soundproofing performance can be obtained without using a floor base material.

The soundproof joist of the present invention comprises a plurality of layers,
It is an essential condition that at least one layer uses a nonwoven fabric using crimped fibers. Such fibers include latently crimped fibers which are made by spinning two kinds of resins having different thermal characteristics such as polyester or polypropylene at the same time to form a single fiber, which is crimped by heat treatment. Notably expressed. Generally, a non-woven fabric using latently crimped fibers and crimped by heat treatment are commercially available. In the present invention, it is desirable to use 40% or more of the fiber at 0009,000. If it is less than 40%, it is difficult to obtain the desired soundproof performance. The nonwoven fabric not only has moderate elasticity and can reduce impact vibration, but also can reduce impact by converting impact energy into thermal energy by friction between fibers.
Weight per unit area of the nonwoven fabric is long-term durability, 400~8000g / m ² in consideration of the subduction of the floor or the like, in particular even the thickness of the nonwoven fabric
If in case the thin of about 5~10mm is of 400~800g / m ²
It is good to use a thing . The thickness of the layer made of non-woven fabric should be at least 3 mm in consideration of living performance such as soundproofing and walking sensation.
It is desirably 0 mm or less, preferably 5 mm or more and 20 mm or less. If the thickness is less than 3 mm, it is difficult to obtain the desired soundproofing performance. If the thickness exceeds 50 mm, the living performance and floor strength are impaired even if the material of the nonwoven fabric is considered. The shape of the non-woven fabric is not particularly limited, and may be a flat shape, a loop-like raised one like a carpet, a brushed one by one, an uneven shape, a corrugated shape. A variety of shapes, such as those described above, are used.

The other components of the soundproof joist are a floor surface finishing material laid on the joist, a rigidity and a thickness that does not cause local deformation in order to support the load on the floor and uniformly disperse the load applied to the nonwoven fabric. If it has a good quality, wood board such as plywood, particle board, MDF, ceramic board such as concrete board and scalp board, synthetic resin board such as acrylic board and PVC board, metal board such as aluminum board and stainless steel board Further, various materials such as a noncombustible lightweight composite board (for example, disclosed in Japanese Patent Publication No. 56-40116) can be appropriately selected in an appropriate shape. Anything that destroys it is not appropriate.

When the soundproof joist of the present invention is used in a general joist floor structure in a wooden house, a steel framed house, or the like, a plurality of joists are used. A load-bearing joist that is strong enough to hold all the load on the floor is always used. As the load-bearing joists, the materials used in the prior art can be used as they are. Generally, wood lumber and steel shaped steel are used. The above-mentioned soundproof joist of the present invention is laminated on the bearing joist.

When the soundproof joist material of the present invention is used in a double floor structure generally used in middle-high-rise buildings and condominiums, a floor surface finishing material is applied on a joist having a specific nonwoven fabric on a floor base. Or a structure in which a floor surface finishing material is laid after laying a floor base material. At this time, if necessary, a large pulling material may be placed on the floor base, and a joist having a specific nonwoven fabric may be assembled thereon to finish.

In this case, the height of the soundproof joist is 20 mm or more and 250 mm in consideration of the purpose of passing the pipe through the space under the floor.
mm or less, preferably 30 mm or more and 150 mm or less,
The nonwoven fabric layer and the rigid layer may be laminated at appropriate positions. The width of the joist is preferably 30 mm or more and 300 mm or more for the purpose of holding the floor material and reducing the contact area with the floor base.
mm or less, more preferably 40 mm to 200 mm. When the width of the joist is too small, the load applied from the floor surface or the like is concentrated and the nonwoven fabric is greatly deformed, which is not preferable for practical use. In addition, it is difficult to hold the floor material with good stability. In the present invention, the contact area of the soundproof joist to the floor base is 6%.
If it exceeds 0%, the floor vibration transmission area is too large, and the soundproofing performance is undesirably reduced. It is desirable that the joist is laid on the floor base efficiently in consideration of fixing the floor base material in a highly safe manner.

In the present invention, as one of means for further improving the soundproofing performance, a sound absorbing material such as glass wool or rock wool can be placed as generally used in a space formed between joists. Placing a sound-absorbing material is one of effective means that does not impair walking sensation, because sound-absorbing performance can be improved without changing the strength of the whole joist.

In the present invention, the floor surface finishing material can be directly fixed to the joist. However, when the floor surface finishing material requires a floor base material such as a carpet, or for the purpose of improving the soundproofing performance, the floor base material is used. You can use this if you need. In this case, the floor base material can be appropriately selected as long as it has a rigidity enough to support the floor surface finishing material and the load on the floor laid thereon,
It is desirable to use a high-rigidity board that does not itself undergo extreme vibration due to an impact force. Examples of materials that can be considered as floor base materials include plywood, particle board, wood cement board, ALC board, scallop board, cement board, and metal panel. Further, the same or different thicknesses of the same material or another material may be used in two or more layers. Further, the plate material can be used by increasing the rigidity by reinforcing the honeycomb, the frame material, the crosspiece, etc., and as a method for improving the vibration-proofing properties of the floor base material, the base material is made of a rubber sheet or an asphalt sheet. A material to which a material is attached can also be used.

FIG. 1 shows an embodiment of the present invention (joist floor structure).
4 to FIG. 1 and 2 are cross-sectional perspective views of the soundproof joist of the present invention, and FIG. 3 is a partially cutaway perspective view showing an example of a floor configuration using the soundproof joist of the cross-sectional configuration of FIG. FIG. 4 shows an example of a sectional configuration of the upper floor and the lower floor in the case of the embodiment shown in FIG. In these figures, 1 is a soundproof joist material, 2 is a nonwoven fabric using crimped fibers, 3 is a material having high rigidity (rigid body), 4 is a joist, 5 is a beam, 5 is a beam, 6 is a surface finishing material, and 7 is sound absorbing material. 8 is a field edge, 9 is a ceiling, 10 is a baseboard, 11 is an inner wall, 12 is an outer wall, and 13 is a waist. FIG. 1 is a cross-sectional perspective view of a soundproof joist. The soundproof joist 1 is obtained by laminating a load-bearing joist 4 on the lower side of a nonwoven fabric 2 using a crimped fiber, and a high-rigidity material (rigid body) 3 on the upper side. . FIG. 2 is a cross-sectional configuration diagram similar to FIG. 1, except that the soundproof joist 1 is laminated with nonwoven fabrics 2, 2 sandwiched between rigid bodies 3, 3 and load-bearing joists 4. In the present invention, in the soundproof joist having the structure shown in FIG. 2, one layer must be a nonwoven fabric using crimped fibers, but the other nonwoven fabric layer may be a nonwoven fabric not using crimped fibers. Absent. FIG. 3 is a partially broken perspective view for explaining one example of a usage mode when the soundproof joist having the cross-sectional configuration of FIG. 1 is used. FIG. 4 shows an example of a sectional configuration of a floor of a building in the example of the embodiment of FIG.

FIGS. 5 to 11 show an embodiment of the present invention (double floor structure). 5 to 9 show sectional views of a soundproof joist, a floor covering material and a surface finishing material on a floor base, and FIG. 10 shows a plan view in which the floor surface finishing material is omitted. Also,
11 is a partially cutaway perspective view of the joist arrangement of FIG. 10 having the cross-sectional configuration of FIG. In these figures, 1 is a soundproof joist,
Reference numeral 2 denotes a nonwoven fabric using crimped fibers, 3 denotes a material having high rigidity (rigid body), 6 denotes a surface finishing material, 7 denotes a sound absorbing material, 14 denotes a floor base material, 15 denotes a floor base, and 17 denotes a pipe under the floor. . FIG. 5 is a cross-sectional configuration diagram of the floor base material 14 and the surface finishing material 6 on the soundproof joist 1 on the floor base. The soundproof joist 1 is placed on the nonwoven fabric 2 using the crimp-type fiber and has high rigidity ( 3) are laminated. FIG. 6 is a sectional view similar to FIG. 5, except that the soundproof joist 1 is obtained by laminating a rigid body 3 under a nonwoven fabric 2 using crimped fibers. FIG. 7 is a sectional view similar to FIG. 1, except that the soundproof joist 1 is formed by laminating a nonwoven fabric 2 using crimped fibers between rigid bodies 3. FIG. 8 shows an embodiment in which the floor surface finishing material 6 is directly fixed to the soundproof joist 1. The soundproof joist 1 is laminated in a form in which nonwoven fabrics 2 using crimped fibers are sandwiched between rigid bodies 3, 3 and 3. Is what it is. In the present invention, when there are two or more nonwoven fabric layers, one layer must be a nonwoven fabric using crimped fibers, but the other layer does not necessarily have to be a nonwoven fabric using crimped fibers. FIG. 9 shows a case in which no floor covering material is used in the structure of FIG. 3 and that the sound absorbing material 16 is arranged around the support. FIG. 10 shows an example of the arrangement of the soundproof joists under the floor base material 14 and an example of the pipe 17 passing between the supports. FIG. 11 is a partially broken perspective view for illustrating a use mode when the support member arrangement of FIG. 10 is performed in the cross-sectional configuration of FIG. It should be noted that these illustrated embodiments are merely examples, and it is needless to say that the embodiments are not limited to these drawings and can be variously changed within the scope of the present invention.

[0024]

The sound-insulating joist of the present invention reduces the vibration generated on the upper floor by using a nonwoven fabric made of crimped fibers laminated on the joist to reduce the floor vibration caused by walking and jumping, and directly to the beams and walls. It is considered that it is possible to suppress transmission and make it difficult to generate solid sounds, and to effectively reduce floor impact sounds. In addition, the soundproof double floor structure of the present invention has a structure in which the specific nonwoven fabric constituting the soundproof joist does not directly transmit the floor impact sound to the floor base, and can reduce the floor impact sound. It is considered that the floor impact sound can be effectively reduced because the components of the double floor structure, such as the floor base material and the joists, are hardly resonated with each other with respect to the sound.

[0025]

EXAMPLES Examples of the present invention will be described below together with comparative examples. (Example 1) A floor was constructed by assembling the soundproof joist of the present invention in a conventional construction building. The soundproof joists of FIG. 1 were assembled as shown in FIG. 3, and the fitting to the wall and ceiling was as shown in FIG. The surface finishing material is a single-layer flooring with a thickness of 17mm, the upper rigid part of the soundproof joist is 15mm plywood, and the lower bearing joist is 50
A nonwoven fabric using a lumber having a height of mm and a latently crimped fiber of polyester having a thickness of 10 mm in the middle was used, and the width of the soundproof joist was set to 60 mm. The soundproof joists are at 455 mm intervals and the beam (large pull) is at 900 mm intervals. Under the floor, 10kg / m ³ ,
A glass wool having a thickness of 50 mm was fixed.

(Comparative Example 1) In a conventional construction building, a structure was used in which the joist material of Example 1 was used without using a nonwoven fabric.

The floor material is constituted by the above combination, and the JIS A141
8 “Method of measuring floor impact sound level at building site”
Table 1 below shows the results of measurement of lightweight floor impact sound by a tapping machine according to the above.

[0028]

[Table 1]

As is clear from these results, it can be seen that the example has a significantly lower floor impact sound level than the comparative example. In the examples, the walking feeling was also good.

Example 2 The floor structure of the present invention was constructed on a 150 mm concrete floor slab surface. The surface finishing material was a color floor having a thickness of 12 mm, and the floor base material was a 20 mm particle board. Rigid body of soundproof joist is 15mm plywood and 2
Two layers of 0mm particle board, non-woven fabric thickness 10
The structure of the nonwoven fabric was made using a latently crimped fiber of polypropylene having a thickness of 100 mm, the soundproof joist was 100 mm in width, and the spacing between the soundproof joists was 600 mm between the cores. Glass wool having a thickness of 10 kg / m ³ and a thickness of 50 mm was densely arranged in the gap between the soundproof joists.

(Comparative Example 2) The configuration of Example 2 without using the nonwoven fabric of the present invention was used, and all other conditions were the same.

(Comparative Example 3) A structure was used in which the nonwoven fabric of the present invention of Example 2 was not used, but a nonwoven fabric of a non-crimp type ordinary fiber was used, and all other conditions were the same.

(Reference Example 1) A nonwoven fabric using a latently crimped fiber of polyester having a thickness of 2.5 mm (less than 3 mm) was used, and all other conditions were the same as in Example 2.

(Reference Example 2) The soundproof joists were laid with a 50 mm interval, and all other conditions were the same as those in Example 2 (the area occupied by the soundproof joists with respect to the base was 60% or more).

Comparative Example 4 A floor structure was constructed on a 150 mm concrete floor slab surface. The surface finishing material was a decorative plywood having a thickness of 6 mm, and the floor base material was a 12 mm plywood. Joist is 12mm
A plywood sandwiched a polyester nonwoven fabric having a thickness of 8 mm from both sides, a width of 70 mm and an interval of 300 mm (the same as in the embodiment of Japanese Utility Model Laid-Open No. 3-123038).

Example 3 The nonwoven fabric used was a latently crimped fiber of polyester, and all other conditions were the same as in Comparative Example 4.

(Example 4) A structure in which a particle board as a floor base material was not used was used, the width of the soundproof joists was 60 mm, the interval between the cores was 300 mm, and all other conditions were the same as in Example 2. And

The floor material is constituted by the above combination, and is JIS A141
8 “Method of measuring floor impact sound level at building site”
Table 2 below shows the results of measurement of lightweight floor impact sound by a tapping machine according to the above.

[0039]

[Table 2]

As is clear from these results, it can be seen that the floor impact sound level of each embodiment is significantly lower than that of the corresponding comparative example. Also, in comparison with Reference Examples 1 and 2, it can be seen that it is preferable to make the thickness of the nonwoven fabric layer 3 mm or more and the occupied area of the soundproof joist to the base 60% or more in order to reduce floor impact noise. In the examples, the walking feeling was also good.

[0041]

As described above, according to the soundproof joist according to the present invention, since the floor is provided via a plurality of joists having a specific nonwoven fabric layer and a rigid layer, the walking feeling is not impaired. Soundproof performance can be significantly improved. Also,
Since the floor jolt can be reduced by such a specific joist material, a material that has been conventionally considered to be inferior in soundproofing performance can be used as a floor surface finishing material, and the floor finishing can be completed according to needs. It is also possible to use flooring material,
From this point, any surface finishing material can be used not only in the material but also in the shape.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a soundproof joist of the present invention.

FIG. 2 is a sectional perspective view of the soundproof joist of the present invention.

FIG. 3 is a perspective view, partially broken away, of a usage mode of the soundproof joist of FIG. 1;

FIG. 4 is a cross-sectional view illustrating a wall, a ceiling, and a floor when the soundproof joist of FIG. 1 is used in a wooden building.

FIG. 5 is a cross-sectional configuration diagram of a soundproof joist, a floor covering material, and a surface finishing material on a floor base in the soundproof double floor structure of the present invention.

FIG. 6 is a cross-sectional configuration diagram of a soundproof joist, a floor covering material, and a surface finishing material on a floor base in the soundproof double floor structure of the present invention.

FIG. 7 is a cross-sectional configuration diagram of a soundproof joist, a floor covering material, and a surface finishing material on a floor base in the soundproof double floor structure of the present invention.

FIG. 8 is a cross-sectional configuration diagram of a soundproof joist, a floor covering material, and a surface finishing material on a floor base in the soundproof double floor structure of the present invention.

FIG. 9 is a cross-sectional configuration diagram of a soundproof joist, a floor covering material, and a surface finishing material on a floor base in the soundproof double floor structure of the present invention.

FIG. 10 shows an example of the arrangement of soundproof joists under the flooring material in the soundproof double floor structure of the present invention.

FIG. 11 is a partially broken perspective view for illustrating a use mode when the soundproof joists of FIG. 10 are arranged in the sectional configuration of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Soundproof joist 2 Non-woven fabric using crimped fiber 3 Rigid body 4 Bearing joist 5 Beam 6 Surface finishing material 7 Sound absorbing material 8 Field edge 9 Ceiling 10 Baseboard 11 Inner wall 12 Outer wall 13 Body difference 14 Flooring base material 15 Floor base 16 Underfloor piping

Claims (4)

(57) [Claims] 1. A soundproof joist material comprising at least one nonwoven fabric layer using the same or different crimped fibers having a thickness of 3 to 50 mm and at least one high rigidity layer of the same or different kind. 2. A floor structure in which a floor is provided by a joist.
And a joist that can hold all of the floor load
Material and the soundproof joist of claim 1 laminated thereon.
Soundproof floor structure. 3. A floor through a plurality of joists arranged on a floor base.
2. The soundproofing of claim 1, wherein the joist is a double structure.
Soundproof double floor structure characterized by joists. 4. The occupied area of the joist is less than 60% of the floor base.
4. The soundproof double floor structure of claim 3 below.