JPH0821073A - Sound insulating floor structure - Google Patents

Abstract

PURPOSE:To provide a sound insulating floor without requiring much time and cost, and enhance damping performance by mounting a damping plate for suppressing the vibration transmission between a finishing floor agent and a structure in the state straddling floor bed panels juxtaposed above the structure. CONSTITUTION:Floor support metal fittings 2 are raised on a concrete slab 1. Floor bed panels 3 are arranged in the juxtaposed state over the floor support metal fittings 2, and bolted thereto. Damping plates 4 are juxtaposed in the state straddling the floor bed panels 3, and the thickness is set to 3-15 mm. The load acting on the floor surface is thus distributed to suppress the deflection of the floor bed panels 3. Further, finish floor materials 5 are juxtaposed thereon, and both the surfaces of the damping plate 4 are constrained by the panel 3 and the floor material 5 so that the vibration caused on the floor can be easily transmitted to the damping plate 4. Therefore, the performance of the damping plate 4 can be efficiently exhibited. Thus, both the improvement in damping performance and the improvement in efficiency and economic property of sound insulating floor forming work can be attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which a plurality of floor base panels are arranged side by side above a structure, and a plurality of finish floor materials are arranged side by side above the plurality of floor base panels. The present invention relates to a soundproof floor structure in which the vibration damping plate that suppresses vibration transmission between the finishing floor material and the structure is provided between the finishing floor material and the finishing floor material.

[0002]

2. Description of the Related Art Conventionally, as a soundproof floor structure of this type, as shown in FIG. 6, a plurality of floor support members 12 are provided upright on a slab 11 which is a structure, and the plurality of floor support members 12 are supported. The damping plate 4 and the floor base panel 3 are superposed on the member 12 and arranged side by side in the floor surface direction, and further, the discarding veneer 13 is placed thereon in a state of straddling the plurality of floor base panels 3. In some cases, a flooring plate 14 serving as a finishing floor material was provided in parallel on the discarded veneer 13.

[0003]

According to the conventional soundproof floor structure described above, the disposal veneer 13 installed in a state of straddling the plurality of floor base panels 3 has a flooring as a person walks on the floor. When a load is applied from the plate 14 to the edge of the floor base panel 3, the load is shared to suppress the flexure of the floor base panel 3 and to prevent "squeaking noise" and the like from occurring. It is provided. If the discarding veneer 13 is not provided, the load directly acts on the floor base panel 3 from the flooring plate 14, and as described above, there is a risk of causing noise due to bending. In the soundproof floor structure, it is necessary to provide this veneer 13 by all means.
There is a problem in that it is difficult to reduce the cost because it is not possible to reduce the material cost and the installation labor involved in installing the discarded veneer 13. Further, there is a problem that the capacity of the vibration damping plate cannot be efficiently exhibited, and there is still room for improvement in the vibration damping performance of the floor.

Therefore, in view of the above-mentioned drawbacks, an object of the present invention is to provide a soundproof floor structure which can construct a soundproof floor structure without much labor and cost and which has high vibration damping performance.

[0005]

To achieve this object, the soundproof floor structure of the present invention is characterized in that a vibration damping plate for suppressing vibration transmission between a finishing floor material and the structure is provided. Is installed in a state of straddling a plurality of floor base panels arranged in parallel above, and the finishing floor material is arranged on the vibration damping plate.

Further, it is preferable that the vibration damping plate is made of a compound containing at least one of rubber, plastic, and asphalt as a main component, and has viscoelasticity. It is preferable that the damping plate has its viscoelasticity set to a value near the glass transition point.

Further, it is preferable that the damping plate is a mixture of iron oxide powder.

It is preferable that the damping plate has a thickness of 3 to 15 mm.

[0009]

According to the characteristic construction of the soundproof floor structure of the present invention, a plurality of floor bases arranged in parallel above the structure are provided with damping plates for suppressing vibration transmission between the finishing floor material and the structure. Since it is mounted in a state of straddling over the panel and the finishing floor material is arranged on the damping plate, the damping plate mounted in a state of straddling over a plurality of floor base panels can reduce the load acting on the floor surface. It becomes possible to share and receive and suppress the bending of the floor base panel, and it becomes possible to prevent "squeaking noise" and the like from being generated without providing a disposing veneer as in the conventional case. Therefore, while maintaining the function as a soundproof floor, it is possible to omit the installation work of the disposable veneer, and it is possible to improve the efficiency of the soundproof floor forming work and reduce the cost. Furthermore, by installing the damping plate between the floor base panel and the finishing floor material, both sides of the damping plate are constrained by the floor base panel and the finishing floor material, and vibration generated on the floor is suppressed. Is easily transmitted to the damping plate, the performance of the damping plate can be exhibited without waste, and the damping property of the soundproof floor structure can be improved.

Further, if the vibration damping plate is made of a compound containing one or more of rubber, plastic, and asphalt as a main component and has viscoelasticity, the vibration damping performance is preferably obtained. It is possible to demonstrate.

Furthermore, if the vibrating plate has a viscoelasticity set to a value in the vicinity of the glass transition point, the damping performance can be more suitably exhibited.

If the damping plate is a mixture of iron oxide powder, it becomes possible to improve the strength characteristics of the damping plate itself, and it receives a load acting on the floor surface in a stable state. It becomes possible.

If the vibration damping plate is set to have a thickness of 3 to 15 mm, it becomes possible to secure good handleability and appropriate rigidity. By the way, since the damping plate needs to share and receive the load acting on the floor surface, it needs to have appropriate rigidity. To satisfy this condition, a thickness of at least 3 mm is required. Will be needed. Also, considering the handleability of the damping plate in the work of forming a soundproof floor, it is desirable that it be lightweight, and when converted to thickness, it is 15 mm (about 45 K in weight conversion).
If it is less than g / m ^2, it is difficult to impair the handling.

[0014]

Therefore, according to the soundproof floor structure of the present invention,
It is possible to fully utilize the performance of the vibration damping plate, and it becomes possible to omit the installation work of the disposal veneer, improving the vibration damping performance and the efficiency of the soundproof floor forming work.
It is possible to achieve economic improvement together.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

FIGS. 1 and 2 show an example of a soundproof floor structure of the present invention. A plurality of floor supporting metal fittings 2 are provided above a concrete slab 1 which is an example of a structure and spaced apart in a plane. A plurality of floor base panels 3 are arranged in parallel over the floor support fittings 2 and are bolted. Further, the damping plate 4 is arranged in parallel over the plurality of floor base panels 3, and further the plurality of finishing floor materials 5 are arranged in parallel on the vibration damping plate 4 to form the soundproof floor F.

The floor support fitting 2 includes a grounding portion 2a formed of a vibration isolating member, a receiving portion 2b for individually receiving adjacent corner portions of a plurality of floor base panels 3, and a receiving portion 2b for the grounding portion 2a. And a supporting leg portion 2c for supporting the same, and the receiving portion 2b is provided with a bolt mounting portion 2d for separately mounting adjacent corner portions of the plurality of floor base panels 3.

The floor base panel 3 is made of particle board, and has a thickness of 25 mm in this embodiment.

The finishing floor material 5 is made of narrow width wood plywood, and in this embodiment, it has a thickness of 12 mm. On both side edge portions of this finishing floor material 5, a convex strip portion 5a and a concave groove portion 5 which can be fitted with another adjacent finishing floor material 5 are freely formed.
b and b are separately provided along the longitudinal direction, and when the finishing floor materials 5 are mounted side by side on the damping plate 4, the ridges 5a (or the concave groove portions 5b) of the other adjacent finishing floor materials 5 are provided. ), The concave groove portion 5b (or the convex ridge portion 5a) of the finishing floor material 5 is fitted so that both finishing floor materials 5 can be attached without relative movement in the thickness direction. There is.

The damping plate 4 is made of asphalt or petroleum resin as a base and iron oxide powder, inorganic powder or fibers mixed therein. This damping plate 4 has a flapping that suppresses vibration transmission between the finishing floor material 5 and the concrete slab 1, and also shares the load acting on the finishing floor material 5 and spreads it over a wide range. In this state, it is transmitted to the underfloor panel 3, and a load is intensively applied to the end portion of the underfloor panel 3 to prevent noise such as "squeak noise" from being generated due to the bending. Further, if there is an excessive depression due to walking on the finishing floor material 5, problems such as easy detachment of nails for attachment and impaired walking feeling occur. Therefore, in order to prevent the problem from occurring and to enhance the noise reduction effect, the spring constant of the damping plate 4 is 0.2 to
1.6 N / m ² (load 1.8 Kg / cm ² , loading time 1
The compression deformation rate at a temperature of 22 ° C. is 0.5 to 4%) and the specific gravity is 1.8 to 3.0. And the damping plate 4
Has viscoelasticity, and the viscoelasticity is set to a value near the glass transition point. Further, the damping plate 4 is set to have a thickness of 8 mm (preferably in the range of 3 to 15 mm), and its width and length are set to the same dimensions as the floor base panel 3. Then, when attaching to the floor base panel 3, the respective damping plates 4 are arranged on the floor base panel 3 so that the joint portion of the vibration control plate 4 is separated from the joint portion of the floor base panel 3 by 50 mm or more, and temporarily attached with a nail. Stop. After that, nails are arranged while arranging the finishing floor material 5 on them, and the nails are driven up to the floor base panel 3, and the finishing floor material 5 and the damping plate 4 are attached to the floor base panel 3. It is something that is fixed. Damping plate 4 and finishing floor material 5 for floor base panel 3
The attachment may be performed by adhering with an adhesive or fixing with a combination of a nail and an adhesive.

Next, FIG. 3 shows the measurement results of the floor impact sound level (frequency 63 to 4000 Hz) in the soundproof floor F according to the present embodiment and the floor impact sound level in the floor structure without the damping plate 4. . As shown in the figure, according to the soundproof floor structure of the present embodiment, the effect of reducing the floor impact sound level can be seen over all the frequencies used for the measurement, and JIS A-14
It is possible to satisfy the floor impact sound insulation performance L-50 of 19 (footsteps and running sounds are hardly noticeable).

Further, assuming four types of floor structures as shown in FIG. 5, the damping performance for each is shown in FIG.

FIG. 5A shows a floor structure (referred to as a first structure) in which a finishing floor material 5 having a thickness of 5.5 mm is laid on a floor base panel 3 having a thickness of 25 mm.

FIG. 5B shows a floor structure (referred to as a second structure) in which a vibration damping plate 4 having a thickness of 8 mm is laid on a floor base panel 3 having a thickness of 25 mm.

FIG. 5C shows a soundproof floor structure as an example of the present invention, which is a floor base panel 3 having a thickness of 25 mm.
This is a floor structure (referred to as a third structure) in which a damping plate 4 having a thickness of 8 mm is laid on the top and a finishing floor material 5 having a thickness of 12 mm is laid on the damping plate 4.

FIG. 5D shows a floor structure in which a floor base panel 3 having a thickness of 25 mm is laid on a vibration damping plate 4 having a thickness of 8 mm, and a finishing floor material 5 having a thickness of 12 mm is laid thereon. (It is called the fourth structure).

FIG. 4 shows the loss coefficient as the damping performance in each floor structure of FIG. 5, and the vibration frequency is 172.
There are three types: Hz, 991 Hz and 2480 Hz. From this result, in the floor structure using the vibration damping plate, the third structure in which both sides of the vibration damping plate are sandwiched between the plate bodies and the vibration damping plate is arranged as close to the vibration side as possible (of the present invention) It can be seen that the sound damping floor structure of one example) has a higher vibration damping performance than the other floor structures.

[Other Embodiment] Another embodiment will be described below.

The damping plate 4 is not limited to the one made of the asphalt or petroleum-based resin described in the previous embodiment and mixed with iron oxide powder or inorganic powder or fiber. Instead, for example, one of rubber, plastic, or a compound containing a plurality of main components,
It may be provided with viscoelasticity.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a perspective view showing a soundproof floor structure of an embodiment.

FIG. 2 is a cross-sectional view showing the soundproof floor structure of the embodiment.

FIG. 3 is a diagram showing measurement results of floor impact sound level in the soundproof floor structure of the example.

FIG. 4 is a diagram showing damping performance in each floor structure of FIG.

FIG. 5 is a sectional view showing a floor structure.

FIG. 6 is a cross-sectional view showing a conventional soundproof floor structure.

[Explanation of symbols]

 1 structure 3 floor base panel 4 damping plate 5 finishing floor plate

Claims (5)

[Claims] 1. A plurality of floor base panels (3) are arranged side by side above a structure (1), and a plurality of finishing floor materials (5) are arranged side by side above the plurality of floor base panels (3). Then, a damping plate (4) for suppressing vibration transmission between the finishing floor material (5) and the structure (1) between the structure (1) and the finishing floor material (5). A soundproof floor structure in which the vibration damping plate (4) is mounted so as to extend over the plurality of floor base panels (3), and the finishing floor material ( Soundproof floor structure with 5). 2. The vibrating plate (4) is made of a compound containing at least one of rubber, plastic, and asphalt as a main component, and has viscoelasticity. Soundproof floor structure. 3. The soundproof floor structure according to claim 2, wherein the damping plate (4) has its viscoelasticity set to a value near the glass transition point. 4. The soundproof floor structure according to claim 1, wherein the vibration damping plate (4) is mixed with iron oxide powder. 5. The soundproof floor structure according to claim 1, wherein the damping plate (4) has a thickness of 3 to 15 mm.