JP2003155821A - Vibration-proof wall-side floor joist, floor backing structure using it and floor structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-proof wall-side floor joist, which has high load resistance and does not obstruct the lightweight floor impulsive-sound reducing performance of a floor backing material, a floor backing structure using it and a floor structure. SOLUTION: In the vibration-proof wall-side floor joist laid on a concrete slab, a rubber 11 being vertically penetrated to a cushioning material 9 and having a specific kinetic spring constant is arranged in the structure in which the cushioning material 9 is arranged on the underside of a hard face material 8 and the hard face material 10 is disposed on the underside of the cushioning material 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping pad that has high load resistance and does not impair the lightweight floor impact sound reduction performance of a floor substrate, a floor substrate structure and a floor structure using the same.

[0002]

2. Description of the Related Art As a floor structure of a conventional concrete building, a base material made of a synthetic resin foam plate is provided on the upper surface of a slab.
Laying while leveling and leveling using level adjusting materials such as mortar dumplings and streak mortar, and by laying a floor finishing material made of wood-based material on the top surface of the mortar dumplings, effective impact noise Those configured to reduce the number are widely adopted. Floors capable of reducing heavy impact noise are disclosed in JP-A-7-34642 and JP-A-7-119289. In addition, the side edges of the floor structure are fixed to the wall of the building along the lower edge with wooden timber joists, and the side edges of the floor finishing material are struck against the wall surface and placed on the timber joists. Due to this, the construction method of fixing to the thick joists is generally widely adopted. As a method of not fixing it on the edge, it is disclosed in JP-A-9-
No. 125668.

[0003]

However, if the side edges of the floor finishing material are abutted against the wall surface and fixed to the floor joists as described above, the sound insulation performance against light weight impact sound is deteriorated. That is, the impact sound generated by walking or dropping of an object is effectively absorbed through the synthetic resin foam plate in the portion other than the side edge of the floor finishing material, but at the side edge of the floor finishing material. Is transmitted directly to the wall or slab through the thick joists, so the sound insulation performance is reduced accordingly. However, if the side edges of the floor structure are not fixed to a portion having a high load-bearing property such as a skeleton due to excessive sticking, load-bearing performance for supporting a heavy object such as a closet or a piano may be insufficient.

An object of the present invention is to provide an anti-vibration pad which has a high load bearing capacity and which does not impair the lightweight floor impact sound reducing performance of a floor substratum, a floor substructure and a floor structure using the same. Is.

[0005]

According to a first aspect of the present invention, there is provided a vibration damping base having a structure in which a cushioning material a is arranged on a lower surface of a hard surface material a, and a rubber material which vertically penetrates through the cushioning material a. Is arranged. By arranging rubber in the cushioning material a, it becomes possible to have a high load bearing performance that cannot be obtained only by the cushioning material a.

As described in claim 2, by disposing the hard surface material b on the lower surface of the cushioning material a, even if a level adjusting material such as mortar dumpling which is not disposed on the entire surface is used, it is arranged on the cushioning material a. It is possible to reliably receive the load applied to the rubber to be used, and it is possible to exert the load-bearing performance of the sound-proofing rod. Here, as described in claim 3, by arranging the raising material on the lower surface, it is possible to construct the vibration-damping bar having the same vibration-damping performance regardless of the height of the floor base material. Becomes As described in claim 4, the dynamic spring constant of the rubber is significantly
By defining the amount to be 1 × 10 ⁵ N / m ³ or more and 1 × 10 ⁸ N / m ³ or less, it becomes easier to achieve both load bearing performance and floor impact sound insulation performance. Further, since the dynamic spring constant as the critical force is the sum of the dynamic spring constants of the rubber and the cushioning material a, the dynamic spring constant of the cushioning material a is also 1 × 10 ⁵ N as described in claim ^5. / M ³ or more and 1 × 10 ⁸ N / m ³ or less. Further, as described in claim 6, the dynamic spring constant of the rubber is 5 to 2
At 0 kg / m ² , 1 × 10 ⁵ N / m ³ or more, 1 × 10 ⁸ N
/ M ³ or less, and by adopting a shape in which the dynamic spring constant increases as the load increases, it is possible to achieve both higher load resistance performance and floor impact sound insulation performance at a higher level. As set forth in claim 7, by setting the width of the cushioning material a larger than that of the hard surface material a, even if the side edge of the cushioning material a is brought into contact with the body, the hard surface material a is not easily brought into contact with the body. It is possible to prevent the floor impact sound from being directly transmitted to the skeleton.

As described in claim 8, the hard face material a and the cushioning material a are arranged so as to be displaced in the lengthwise direction to form the interleaving structure, so that the level is adjusted with the mortar dumpling or the like. Construction becomes easy.

According to a ninth aspect of the present invention, in the floor base structure, the hard surface material a for vibration damping is arranged at the side edge of the room without contacting the wall surface of the body, and the floor base material is arranged inside the room. ,
It is possible to prevent the floor impact sound from being transmitted directly to the body, and it is possible to maintain the lightweight floor impact sound level reduction performance of the floor base material.

According to a tenth aspect of the present invention, there is provided a floor base structure in which a hard surface material a for vibration damping is arranged on a side edge of a room without contacting a wall surface of a body, and a floor base material is arranged inside the room. above,
In the floor structure in which the floor finishing material is laid, by not contacting the floor finishing material with the body wall surface, it is possible to obtain a floor structure capable of maintaining the lightweight floor impact sound level reduction performance of the floor underlaying material.

[0010]

In the vibration damping base according to the present invention, the side edge of the hard floor constituting material constituting the upper portion of the floor structure is fixed to the joist at the vibration damping without contacting the wall surface of the body. The hard floor component can vibrate independently of the skeleton, and the transmission of vibration from the floor component to the skeleton is significantly suppressed. Moreover, the load resistance is secured by the effect of the rubber arranged in the cushioning material a.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The vibration isolator 1 may have a structure in which a cushioning material a9 is arranged on the lower surface of the hard surface material a8, a columnar or prismatic through hole is provided in the cushioning material a9, and a columnar rubber 11 is provided in the hole. However, from the viewpoint of load resistance, as shown in FIG. 1, a hard surface material b1 is provided on the lower surface of the cushioning material a9.
A structure in which 0 is arranged is more preferable. Here, the hard surface material a
8, plywood, painted plywood, synthetic wood, concrete board,
Paper, metal plate, low-foam plastic plate, non-foam plastic plate, etc. are used, but plywood that can fix flooring materials such as flooring with nails or screws, painted plywood, synthetic wood are preferable. Particularly preferred is synthetic wood that does not warp due to moisture. The cushioning material a9 is made of inorganic fiber such as glass wool or rock wool, felt made of cellulose fiber, polyester, polypropylene or the like, synthetic resin foam such as soft polyurethane foam, polyethylene foam, polypropylene foam or polystyrene foam. However, a synthetic resin foam excellent in water resistance is preferable, and an elastic polystyrene foam that is easy to control the dynamic spring constant and is recovered after pressing is more preferable. Dynamic spring constant per unit area does not hinder floor impact noise reduction performance 1 x
It is preferably 10 ⁵ N / m ³ or more and 1 × 10 ⁸ N / m ³ or less,
It is more preferably 1 × 10 ⁶ N / m ³ or more and 1 × 10 ⁷ N / m ³ or less. As the rubber 11, either natural rubber or synthetic rubber can be used. However, in order to achieve both load bearing capacity and floor impact noise reduction performance, the dynamic spring constant is calculated to be 1 × 10 ⁵ N / m ³ or more, 1 × 10 ⁸ N / m ³
It is preferable that the load is set to m ³ or less, and the load per unit area applied to the main body is 5 to 20 kg / m ²
The dynamic spring constant of rubber at is 1 × 10 ⁵ N / m ³ or more,
More preferably, it is 1 × 10 ⁸ N / m ³ or less, and the shape is such that the dynamic spring constant increases as the load increases. Here, the shape in which the dynamic spring constant increases as the load increases refers to, for example, a shape in which unevenness or an arc is formed at the end portion in the thickness direction of a cylindrical rubber, or a spherical shape. However, the present invention is not limited to these as long as the dynamic spring constant increases with a load. The hard face material b10 includes plywood, coated plywood,
Synthetic wood, concrete plates, paper, metal plates, low-foam plastic plates, non-foam plastic plates, etc. are used, but since level adjusting materials containing moisture such as mortar dumplings may be used, Synthetic wood, low-foam plastic boards and non-foam plastic boards are preferred.

FIG. 5 shows an embodiment of a floor structure using the vibration isolator 6. Floor structure 1 is a concrete slab 2
A plurality of mortar balls 3 serving as level adjusting materials are provided on the upper surface at regular intervals, and the vibration-damping pedestals 6 are set on the upper surface with almost no clearance while adjusting the level, and a laminated body of the hard surface material c and the buffer material b. Floor-finishing materials 5 are laid on the floor-working materials 4 on the floors while adjusting the levels and flattening the floor-working materials, and laying the floor-working materials 5 on the floor-working materials 4 on the floor-working materials 4. The material 5 is fixed to the floor base material 4 with a fixture 7 such as a nail or a screw nail, and the construction is performed.

The side edge of the floor finishing material 5 is fixed on the hard surface material a arranged on the upper surface of the joist 10 as described above.
It is fixed by 3, and is arranged with a gap from the wall surface of the body.

As shown in FIG. 6, the floor base material 4 includes a hard surface material c13 and a plate-shaped cushioning material b1 arranged on the lower surface thereof.
4 and.

As the cushioning material b14, a synthetic resin foam such as expanded polystyrene, expanded polypropylene or expanded polyethylene can be used as it is, but it is also possible to use one which is elastically modified by pressing. Yes, preferably the dynamic spring constant is 1 × 10 ⁵ N / m ³
Or more, 1 × 10 ⁸ N / m ³ or less, more preferably 1 × 1
It is set to 0 ⁶ N / m ³ or more and 1 × 10 ⁷ N / m ³ or less. Here, when the dynamic spring constant is less than 1 × 10 ⁵ N / m ³ , the feeling of walking becomes worse due to the sinking of the floor and 1 ×
If it exceeds 10 ⁸ N / m ³ , there is a problem that the sound insulation performance against light weight impact sound is deteriorated.

As the hard face material c13, various materials can be used as long as they can be nailed, and plywood,
Those made of synthetic wood, concrete plate, paper, metal plate, low-foam plastic plate, non-foam plastic plate, etc. are adopted.

[0017]

EXAMPLE Next, a sound insulation performance test conducted on the floor structure 1 will be described. Considering that the distance between the slab 2 and the upper surface of the floor in a general apartment house is about 100 mm, in Examples 1 to 3 and Comparative Examples 1 and 2, the slab 2 has a thickness of 200 mm and a wooden floor finish. Material 5 thickness 12m
m, hard face material a8 thickness 12 mm, width 100 mm, cushioning material a9 thickness 50 mm, width 120 mm, hard face material b10
12 mm, the hard surface material c13 has a thickness of 12 mm, and the cushioning material b14 has a thickness of 62 mm.

Further, the hard face material a8 and the hard face material b10
Was made of synthetic wood, and the hard face material c13 was made of coated plywood. As the cushioning material b14, polystyrene foam having a foaming ratio of 110 times is pressed with a press machine to a thickness of 15%.
It was pressed until it became, and then it was recovered to 55% and the dynamic spring constant was set to 3.0 × 10 ⁶ N / m ³ .

Example 1 As the cushioning material a9, polystyrene foam having a foaming ratio of 90 times was pressed by a pressing machine to a thickness of 25% and then recovered to 75%, and the dynamic spring constant was 9.2.
Using those set × 10 ⁶ N / m ^3, as the rubber 11, the dynamic spring constant, when in terms of per unit area of Neda used was a 3.0 × 10 ⁶ N / m ³ .

Example 2 As the cushioning material a9, a polystyrene foam having a foaming ratio of 110 times was pressed by a pressing machine to a thickness of 20% and then recovered to 60% to obtain a dynamic spring constant of 3.7.
Using those set × 10 ⁶ N / m ^3, as the rubber 11, the dynamic spring constant, in terms of per unit area at the time when Neda used was a ^{3.0 × 10 6 N / m 3} .

Example 3 As the cushioning material a9, a polystyrene foam having a foaming ratio of 110 times was pressed by a pressing machine until the thickness became 20% and then recovered to 60%, and the dynamic spring constant was 3.7.
× using those set 10 ⁶ N / m ^3, as the rubber 11, the dynamic spring constant in terms of per unit area of Neda time when the live load is 5 kg / m ² is, 1.2 × 10 ⁶ N / M ³
And the dynamic spring constant increases with increasing load,
When the pressure was 200 kg / m ² , a rounded shape was provided at the tip in the thickness direction so that the dynamic spring constant converted per unit area of the undercoat was 1.2 × 10 ⁷ N / m ³ .

Comparative Example 1 The same construction as in Examples 1 to 3 was adopted except that instead of the vibration-damping glue 6, a wooden glue was nailed and fixed to the body.

Comparative Example 2 The structure was the same as in Examples 1 to 3 except that there was no significant loss.
Regarding the measurement of the dynamic spring constant in the present invention, JIS
It carried out based on A6321. However, when there is a description of the load per unit area, the mass of the load plate was changed to the stated load per unit area for measurement.

Regarding the lightweight impact sound level reduction performance, J
It was performed based on IS A1440. That is, the light weight floor impact sound level reduction amount was calculated by the following formula. ΔL = L0−Lm (dB) where ΔL: Lightweight floor impact sound level reduction amount (dB) L0: Lightweight floor impact sound level of concrete floor surface (d
B) Lm: Lightweight floor impact sound level (dB) in a state where the test body was installed on the concrete floor. The obtained results are shown in Table 1.

[0025]

[Table 1] As in Comparative Example 1, in the configuration in which the wooden edge is nailed and fixed to the body, the floor impact sound is propagated directly downstairs through the edge, so the performance is greatly reduced as compared to Comparative Example 2 without the edge. However, as in Examples 1 to 3, it can be seen that the floor impact sound level reduction performance in the case of no vibration in Comparative Example 2 is maintained in the floor configuration using the vibration-damping Neda 6. .

[0026]

According to the vibration isolating apparatus according to the first aspect of the present invention, in the structure in which the cushioning material a is arranged on the lower surface of the hard surface material a, the rubber which vertically penetrates the cushioning material a is arranged in the cushioning material a. Therefore, it becomes possible to have a high load bearing performance which cannot be obtained only by the cushioning material a.

By disposing the hard surface material b on the lower surface of the cushioning material a as described in claim 2, for example, even when a level adjusting material such as mortar dumpling that is not arranged on the entire lower surface is used, the cushioning material a is used. It is possible to reliably receive the load applied to the rubber disposed in the, and it is possible to exert the load-bearing performance of the sound-proofing rod. Here, as described in claim 3, by arranging the raising material on the lower surface, it is possible to construct the vibration-damping bar having the same vibration-damping performance regardless of the height of the floor base material. Becomes

As described in claim 4, the dynamic spring constant of the rubber is converted into 1 × 10 ⁵ N per unit area of the adhesive.
/ M ³ or more and 1 × 10 ⁸ N / m ³ or less makes it easier to achieve both load bearing performance and floor impact sound insulation performance. In addition, since the dynamic spring constant as the critical force is the sum of the dynamic spring constants of the rubber and the cushioning material a, the dynamic spring constant of the cushioning material a is also 1 as described in claim 5.
It is specified to be not less than × 10 ⁵ N / m ^{3 and not} more than 1 × 10 ⁸ N / m ³ . Furthermore, as described in claim 6, the dynamic spring constant of the rubber has a loading load of 5 to 20 kg.
/ M ² 1 × 10 ⁵ N / m ³ or more, 1 × 10 ⁸ N / m ³
It is the following, and by adopting a shape in which the dynamic spring constant increases as the load increases, it becomes possible to achieve both load bearing performance and floor impact sound insulation performance at a higher level.

As described in claim 7, the width of the cushioning material a is
By setting the hard surface material a larger than the hard surface material a, it is possible to prevent the hard surface material a from easily contacting the body even if the side edge of the cushioning material a comes into contact with the body, and the floor impact sound is not directly transmitted to the body. Is possible.

As described in claim 8, the hard face material a and the cushioning material a are arranged so as to be displaced in the lengthwise direction to form the interlocking structure, which facilitates the construction while adjusting the level. Become.

In the floor base structure according to the ninth aspect, the hard surface material a of the vibration damping material is arranged on the side edge of the room without contacting the wall surface of the body, and the floor base material is arranged inside the room. ,
It is possible to prevent the floor impact sound from being transmitted directly to the body, and it is possible to maintain the lightweight floor impact sound level reduction performance of the floor base material.

According to a tenth aspect of the present invention, in the floor structure, the hard surface material a for vibration damping is arranged on the side edge of the room without contacting the wall surface of the body, and the floor material is arranged inside the room. above,
In a floor structure in which a floor finishing material is laid, it is possible to obtain a floor structure capable of maintaining the lightweight floor impact sound level reduction performance of the floor underlaying material by not contacting the floor finishing material with the wall surface of the body.

[Brief description of drawings]

FIG. 1 is a longitudinal cross-sectional view of a vibration-reducing paste of the present invention in a length direction.

FIG. 2 is a longitudinal sectional view in the width direction of the vibration-damping material of the invention.

FIG. 3 is a perspective view of the vibration-reducing cable of the present invention.

FIG. 4 is a vertical cross-sectional view in the width direction of a vibration-reducing rod of another embodiment.

FIG. 5 is a vertical cross-sectional view of the main part of the floor structure according to the embodiment.

FIG. 6 is a perspective view of a floor base material of the embodiment.

[Explanation of symbols]

1 floor structure 2 slabs 3 mortar dumplings 4 Floor base material 5 floor finishing materials 6 Vibration isolation 7 Fixture 8 Hard surface material a 9 cushioning material a 10 Hard surface material b 11 rubber 12 Bulking material 13 Hard surface material c 14 cushioning material b

Claims (10)

[Claims] 1. In a structure for laying on a concrete slab, wherein a cushioning material a is arranged on a lower surface of a hard surface material a, a rubber which vertically penetrates the cushioning material a is arranged on the cushioning material a. Anti-vibration features that are characterized. 2. A structure for laying on a concrete slab, wherein the cushioning material a is arranged on the lower surface of the hard surface material a, and the hard surface material b is arranged on the lower surface of the cushioning material a.
A vibration damping pad, wherein rubber that vertically penetrates the cushioning material a is arranged on the cushioning material a. 3. An anti-vibration bottom, wherein a padding material is arranged on a lower surface of the anti-vibration end according to claim 2. 4. The dynamic spring constant of rubber is 1 × 10 ⁵ N / m ³ or more, and 1 × 10 ⁵ in terms of the unit area of the adhesive.
The anti-vibration sticker according to claims 1 to ^3, which is ⁸ N / m ³ or less. 5. The buffer material a is a dynamic spring constant of 1 × 10 ⁵ N /
m ³ or ^{more, 1 × 10 8 N / m} 3 proof closed Neda of the following claim 1, wherein a soft synthetic resin foam. 6. The dynamic spring constant of rubber is 1 × 10 ⁵ N / m ³ or more and 1 × 10 ⁸ N / when the loading load applied per unit area of the main body is 5 to 20 kg / m ^2. The anti-vibration stander according to claim 1, wherein the shape is m ³ or less, and the shape is such that the dynamic spring constant increases as the load increases. 7. The vibration damping pad according to claim 1, wherein a width of the cushioning material a is larger than that of the hard surface material a. 8. The vibration damping pad according to claim 1, wherein the hard face material a and the cushioning material a are arranged so as to be displaced in the lengthwise direction to form an interlock. 9. The anti-vibration flooring according to any one of claims 1 to 8, wherein the hard surface material (a) is arranged at a side edge of the room without contacting the wall surface of the body, and the floor base material is arranged inside the vibration-proof floor. The floor base structure characterized by the above. 10. A floor structure in which a floor finishing material is laid on the floor base structure according to claim 9, wherein the floor finishing material is not in contact with the wall surface of the skeleton.