JP4098068B2 - Floating floor structure and construction method - Google Patents

Description

【０１０５】
以下、実施例と比較例の実験結果を表１に基づいて説明する。
実施例１では、防音部材の板状部材と、浮床部材の最下層部材であるパーチクルボードのビス固定ピッチを２列で１００ｍｍとしたものである。
【０１０６】
また、板状部材下面にビス先端を貫通して固定している。最下層部材とその上部の層状部材との固定は縦２００ｍｍピッチ、横１５０ｍｍピッチである。防音部材は、床外周に壁に沿って設置し、内側に３６０ｍｍピッチで配置した。
【０１０７】
その結果、決定周波数６３Ｈｚにおいて、Ｌ_Ｈ５１となり、比較例１と比べ、３ｄＢも改善できている。その他の周波数も全て改善しており、防音部材の板状部材の固定ピッチ、浮床部材の層状部材の上下のパーチクルボード間の固定の密度の差だけで、Ｌ_Ｈ−５４からＬ_Ｈ−５１に改善でき、これは新たな部材を加えたものでもなく、施工上の工夫のみで改善できる事が判る。これは非常に大きな改善であると言える。又、床変位量も非常に少なく、耐荷重性も向上することが判る。
【０１０８】
実施例２は、実施例１の浮床部材の層状部材のパーチクルボード間の固定を縦４００ｍｍ、横４５０ｍｍに変化させた例である。それ以外は、実施例１と同一である。
【０１０９】
比較例１と比べ、基本的に防音部材の板状部材と最下層部材のパーチクルボードとの固定が、比較例１では１例で３００ｍｍであり、ビス先端が支持材下面に貫通がない点が相違し、結果として、比較例１のＬ_Ｈ−５４からＬ_Ｈ−５２に改善されている。ここでも大きく改善されており、防音部材の板状部材の固定度が改善の大きな要因であり、浮床部材の層状部材間の固定も実施例１との差から無視できない改善点である事が判る。又、床変位量も非常に少ない耐荷重性にも効果が大きい事が判る。
【０１１０】
実施例３は、防音部材の板状部材と浮床部材の最下層部材のパーチクルボードとの固定を、１列で５０ｍｍピッチとした例である。
【０１１１】
また、この例は、浮床部材の層状部材の上下パーチクルボード間の固定を、縦横３００ｍｍピッチとした例である。
【０１１２】
この例では、防音部材の配置は、壁に沿った配置はせず、防音部材は、実施例１、２及び比較例１で用いた構成と同じで、長さのみ半分のサイズとして使用した。防音部材の長辺間の芯々間は３００ｍｍとした。ただし、浮床部材の最下層部材の短辺端部を防音部材の幅方向線上で受ける為に部分的に多少のバラツキを持たせた。
【０１１３】
その結果、Ｌ_Ｈ−５１となり、比較例１と同様な構成にも拘らず、改善度が大である事が判る。また、床変位量も非常に少なく、耐荷重性の改善にも効果が大である。
【０１１４】
実施例４は、防音部材の板状部材と最下層部材のパーチクルボードとの固定を２列で１５０ｍｍピッチとした例である。
【０１１５】
また、この例は、ビス先端を板状部材下面に貫通させ、浮床部材の層状部材の上下のパーチクルボード間の固定を縦横１５０ｍｍピッチとし、ビス先端を下側パーチクルボード下面に貫通させた例である。
【０１１６】
さらに、この例は、実施例３と同様に、防音部材は壁に沿った配置ではなく、室内の長手方向に平行に防音部材の長辺間の芯々間は５４０ｍｍとした。
【０１１７】
その結果、Ｌ_Ｈ−５２となり、比較例１と同様な構成にも拘らず、改善度が大である事が判る。また、床変位量も非常に少なく、耐荷重性の改善にも効果が大である。
【０１１８】
以上より、実施例１〜４に示すように、従来から固定度の低い建築物では重量床衝撃音の改善に苦慮していたが、新たな部材を加える事なく改善出来、コスト面でもビス量が多くなるだけで施工時間もほとんど変わらないので、低固定度の建物に於る、浮床構造で、コスト上昇を抑えつつ重畳床衝撃音を改善する上で非常に効果が大である。
【０１１９】
【発明の効果】
本発明の浮床構造によれば、浮床部材の最下層部材と防音部材の板状部材とが所定の密な固定ピッチで固定されることにより、浮床部材の最下層部材は防音部材の板状部材の厚みの分が増して、凹凸板として働くこととなり、浮床部材と防音床材との間の振動伝達パターンを変化させ、振動抑制及びそれに伴う騒音防止性能が著しく向上する。
【図面の簡単な説明】
【図１】 実施例１にかかる防音部材の配置と防音部材及び最下層部材の固定ピッチを示す平面図である。
【図２】 実施例１にかかる浮床構造の断面図である。
【図３】 実施例１にかかる層状部材間の固定ピッチを示す平面図である。
【図４】 実施例２にかかる層状部材間の固定ピッチを示す平面図である。
【図５】 実施例３にかかる防音部材の配置と防音部材及び最下層部材の固定ピッチを示す平面図である。
【図６】 実施例３にかかる層状部材間の固定ピッチを示す平面図である。
【図７】 実施例４にかかる防音部材の配置と防音部材及び最下層部材の固定ピッチを示す平面図である。
【図８】 実施例４にかかる層状部材間の固定ピッチを示す平面図である。
【図９】 比較例１にかかる防音部材の配置と防音部材及び最下層部材の固定ピッチを示す平面図である。
【図１０】 比較例１にかかる層状部材間の固定ピッチを示す平面図である。
【符号の説明】
１ 浮床構造
２ 床基版
３ 防音部材
４ 浮床部材
３Ａ，３Ｃ，３Ｄ 衝撃吸収部材
３Ｂ 板状部材
４Ａ 最下層部材
５，１１，１７ ビス
６ 隙間
８Ａ，８Ｂ 層状部材
７，９，１０ 継目
１２ 鉄骨梁
１３ 防振ゴム
１４ 固定材
１５ ＡＬＣ床版
１６ パーチクルボード
１９ フロアーネイル[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floating floor structure in which a layer of a floating floor member is formed on a soundproof material portion. More specifically, the present invention relates to a floating floor that can reduce a heavy floor impact sound and protect a human body during a fall and fall. Concerning structure.
[0002]
[Prior art]
The heavy floor impact sound can be easily improved by increasing the thickness of the floor slab in rigid structures such as RC structures where structural materials such as floors, walls, columns, and beams are fixed at a high degree of fixation. In such a rigid structure building, the problem is solved only by means of increasing the slab thickness.
[0003]
However, in the case of wooden structures, steel structures, and two-by-four structures with a low degree of fixing of the structural material, it is difficult to improve the heavy floor impact sound, and the present inventors have tried various improvements that show quite good results (for example, Patent Documents 1 and 2).
[0004]
[Patent Document 1]
JP 2000-144999 A
[Patent Document 2]
Japanese Patent Application No. 2002-134128
[0005]
[Problems to be solved by the invention]
Due to recent economic trends and the like, the cost in terms of both materials and construction has been increasing year by year, and it is required that the cost can be reduced in length, suppressed and still have high performance.
[0006]
An object of the present invention is to improve a heavy floor impact sound while suppressing an increase in cost in a floating floor structure in a building with a low fixed degree.
Moreover, the subject of this invention is improving a heavy-weight-floor impact sound, without requiring an additional new member by the device by the construction surface.
[0007]
[Means for Solving the Problems]
  The present invention comprises a floor base plate, a plurality of soundproof members on the floor base plate, and a floating floor member on each of the soundproof members, wherein the soundproof member is on the plurality of shock absorbing members and each of the shock absorbing members. A floating floor structure comprising a plate-shaped member,The bottom layer member of the floating floor member is supported by a plate-like member of the soundproof member, the end of the bottom layer member is supported by the soundproof member, and the soundproof member has an elongated shape,The lowermost layer member of the floating floor member and the plate-like member are 50 to 50150mm Of the pitch 1 Column fixed or 100 ~200mm pitchof 2 Column fixedScrew fixingTheIsAndThe screw tip part penetrates the plate-like member, and the screw tip part protrudes about several millimeters from the lower part of the plate-like member to increase the fixing degree.And the lowermost layer member of the floating floor member is formed as an uneven plate while the thickness of the plate-like member of the soundproof member is increased by being fixed at the predetermined dense fixed pitch. From the outer wall of the base plate 50 ~ 200mm Are placed on the floor base plate inside the wall along the wall surface at an arbitrary interval, and the bottom layer member of the floating floor member is the soundproof member except for the outer periphery of the floor. When the long side and the bottom layer member are used substantially in parallel, the long side end of the bottom layer member is fixed on the short side center line of the plate-like member, forming the seam of the bottom layer member, and the length of the soundproof member When using the side and the long side of the lowermost layer member so as to intersect, the short side end of the lowermost layer member is fixed on the center line of the short side of the plate-like member of the soundproof member, and the seam of the lowermost layer member is formed. In addition, a clearance is provided between the floating floor member and the wall on the outer periphery of the floor, and a ventilation baseboard that ensures air permeability is provided in the finishing material.The present invention relates to a floating floor structure.
[0008]
The present inventor has devised the construction method to improve the soundproofing performance without adding a new member, and at that time, to minimize the efficiency reduction on the construction side. I examined whether or not.
[0009]
The inventor has conducted many experiments, and as a result, has found that the soundproof performance can be remarkably improved by increasing the fixed pitch between the plate-like member of the predetermined soundproof member and the lowermost layer member of the floating floor member.
[0010]
Further, the present inventor has found that the soundproofing performance can be improved by increasing the interlayer fixing pitch of the layered member of the floating floor member, and at this time, the lower layered member to which the screw tip is fixed penetrates. I got the knowledge that better results would be achieved.
[0011]
At this time, in order to increase the stability of the performance, it was effective to secure a gap with the wall on the outer periphery of the floor and to treat with the ventilation baseboard. Moreover, the knowledge that stability of performance was ensured by arrange | positioning the sound-insulation member in the outer periphery vicinity of a floor slab was also acquired.
[0012]
Although these measures have cost deterioration to the extent that the number of screws used increases, there are no other significant cost deterioration factors, so it has been found that performance can be improved almost without cost increase. In addition, the knowledge that the amount of floor displacement due to a load unexpected at the beginning is reduced by the increase in the degree of fixing of the members this time was also obtained.
[0013]
According to the research of the present inventors, the lowermost layer member of the floating floor member and the plate-like member of the soundproofing member are fixed at a predetermined dense fixed pitch, so that the lowermost layer member of the floating floor member is a plate-like member of the soundproofing member. It was thought that as a result, the unevenness plate was formed and worked as an uneven plate.
[0014]
In such a concavo-convex plate, the impact received by the floating floor member becomes vibration and concentrates on the convex portion, and the shock absorbing member under the convex portion efficiently absorbs this concentrated vibration.
[0015]
As a result, the floating floor structure in which the lowermost layer member of the floating floor member and the plate-like member of the soundproof member are fixed at a predetermined dense fixed pitch sufficiently exhibits the original vibration absorbing performance of the shock absorbing member, and its heavy floor The improvement performance of the impact sound is not the difference of just increasing the fixed pitch of the floating floor structure, but by the increased fixed degree between the floating floor member and the plate member of the soundproof floor material. The vibration transmission pattern with the material is changed to significantly improve vibration suppression and noise prevention performance associated therewith.
[0016]
In addition, such a floating floor structure increases the bending rigidity of the floating floor member, increases the loss of impact force, and receives impact force over a large floating floor area, so the effect of improving sound performance is enhanced, and the floor when loaded is also added. The amount of displacement is also considered to be small.
[0017]
The field of use of the present invention is particularly suitable in the field of buildings in which structural materials such as floors, walls, columns, and beams are fixed at a low degree of fixation, and are detached houses such as wooden structures, steel structures, and two-by-four. It is particularly suitable for floors of buildings that are struggling with countermeasures against heavy floor impact noise such as low-rise apartments, and floors where importance is placed on soundproof performance and safety, such as residential areas for infants and the elderly, hospitals, and the like.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment for carrying out the present invention will be described.
Hereinafter, the floating floor structure will be sequentially described along the construction procedure.
(1) Floor base plate
The floor base is the foundation of the floor. Examples of the floor base plate include an ALC floor slab, a wood floor panel, and a plate material such as plywood that is connected to the joist.
[0019]
The floor base plate is preferably a floor slab in which reinforced mortar, self-leveling material, plywood, particle board, and gypsum board are used alone or in combination and connected and integrated by screw fixing, because the whole is heavy and hardly vibrates.
[0020]
The hydraulic inorganic material such as reinforced mortar and self-leveling material is easy to break due to drying shrinkage and floor impact, so it is difficult to be connected and integrated, and should be considered as an effective treatment for fireproofing. From this point of view, the same effect can be obtained by using a gypsum board together. In any case, it is preferable to connect and fix the floor slabs with a wood plate material that can be screw-fixed to the upper part of the inorganic material.
[0021]
(2) Soundproof member
Next, a plurality of soundproofing members can be installed and fixed on the floor base plate. Each soundproof member has a plurality of impact absorbing members and a plate-like member on each impact absorbing member. The shape, material, and the like of the soundproof member are not particularly limited, and various members can be used, and a soundproof member having a rectangular shape or an elongated shape can be used.
[0022]
The plate-like member can fix a plurality of impact absorbing members. The impact absorbing member under the plate-like member can be previously provided with means for fixing to the floor base plate such as an adhesive.
[0023]
As a means for fixing the soundproof member to the floor base plate, in addition to the above-mentioned adhesive, a support material is fixed under the shock absorbing member, and the fixing surface of the support material on the floor base plate side is subjected to an adhesive treatment. The support material may be fixed with screws or nails. Moreover, you may fix with adhesives, such as caulking, at the time of installation.
[0024]
Each shock absorbing member can change the height into several types and perform shock absorption in several stages. In such a case, it is also possible to reduce the height of an object containing a large amount of elastic elements as an impact reaction force so that a physical impact reaction force does not occur. In this case, it is sufficient that only the shock absorbing member having a high height is fixed to the floor base plate.
[0025]
It is better to install the soundproofing members on the inner floor base plate at arbitrary intervals along the wall surface at a distance of 50 to 200 mm from the outer peripheral wall of the floor base plate. The soundproofing performance is further stabilized, the variation between the hitting point and the sound receiving point is reduced, the probability that the furniture is installed at the time of use is high, and the floor displacement at that time is reduced.
[0026]
It is preferable to install the soundproof members apart from each other. When the soundproof member has an elongated shape, the distance between the short sides is preferably about 10 to 50 mm so that the soundproof members do not rub and generate noise.
[0027]
The separation distance between the long sides of the long and narrow soundproofing member is suitably 250 to 650 mm between the cores that are the center lines of the short sides. 400 to 650 mm is sufficient for use as a normal living room, and 250 to 460 mm is suitable when a large number of people gather or a large amount of heavy loads such as books are planned. If it is less than 250 mm, the cost is high and the sound performance is not improved, so there is no advantage. On the other hand, if it exceeds 650 mm, both the sound performance and the floor displacement are gradually deteriorated, which is not preferable.
[0028]
(3) Floating floor member
It is provided on each soundproof member, that is, on a plate-like member of the soundproof member. Discarded plate materials, floor finish materials, etc. are included. The floating floor member is formed of the lowermost layer member such as a pasting plate member with the lowermost side discarded.
[0029]
At this time, when the lowermost layer member of the floating floor member uses the long side of the soundproofing member and the lowermost layer member in parallel except for the outer peripheral portion of the floor, the long side end of the lowermost layer member is a plate-like member of the soundproofing member. It is fixed on the short-side center line of this, and the seam of the lowest layer member can be formed.
[0030]
In addition, when the long side of the soundproof member and the longest side of the lowermost layer member are used orthogonally, the short side end of the lowermost layer member is fixed on the short side center line of the plate member of the soundproof member, and the lowermost layer Member seams can be formed.
[0031]
The lowermost layer member of the floating floor member is supported by a plate-like member of a soundproof member. In particular, it is preferable that the end portion of the lowermost layer member is supported by a soundproof member. If not supported, a portion where the impact displacement or loading displacement becomes extremely large is generated, and between the hitting point and the receiving point of the heavy floor impact sound. As a result, the soundproofness may deteriorate.
[0032]
As described above, when the end portion of the lowermost layer member is installed on the plate-like member of the soundproof member, the installation pitch of the soundproof member is not necessarily the same pitch.
[0033]
The floating floor member and the floor base plate can be provided with a gap between them and the wall on the outer periphery of the floor. Since the air in the space formed by the floor base plate, the soundproof member, and the floating floor member is compressed when the floating floor member is pushed downward by a floor impact, the gap acts as an escape path for the air, and a resonance phenomenon ( (Taiko phenomenon) can be prevented.
[0034]
The clearance between the floating floor member and the outer peripheral wall may normally be about 5 mm. If the finishing material is provided with a ventilation base board that ensures air permeability and is finished so that the clearance is not visible, the aesthetics will not be impaired. .
[0035]
The floating floor member can be formed by using a plurality of layered members, and as such layered members, various members, particularly various wooden boards can be used. Among the layered members, the lowest layer is the above-mentioned lowest layer member. If a wood board is used as such a layered member, the wood board expands and contracts due to moisture absorption and release, and therefore the above-mentioned gap is important from the viewpoint of preventing a rubbing sound between the floating floor member and the wall.
[0036]
The lowermost layer member of the floating floor member is installed on the plate-like member of the soundproof member and fixed so as to have a predetermined pitch of 50 to 200 mm. The fixing means is not particularly limited, and ordinary screws can be used.
[0037]
Fixing the predetermined pitch in one or two rows has an unexpected effect in improving sound performance without adding other members.
[0038]
Even if the fixed pitch is 50 mm or less, the effect of improving the soundproofing performance does not increase, so it is not necessary to make it more dense. On the contrary, when it exceeds 200 mm, the improvement effect gradually deteriorates. The pitch of 50 to 150 mm is good when fixed to one row, and the pitch of 100 to 200 mm is preferable when fixed to two rows in terms of improvement effect and workability. In the case of two-row fixing, the effect does not change whether the fixing portion is symmetrical or staggered with respect to the center line of the support material.
[0039]
In this way, by fixing the fixed pitch between the lowermost layer member of the floating floor member and the plate-like member of the soundproofing member, the lowermost layer member of the floating floor member is increased in thickness by the thickness of the plate-like member of the soundproofing member. An uneven plate will be formed, the bending rigidity of the lowermost layer member will increase, the impact force loss will increase, and the impact force will be received with a wide floating floor area, so the sound performance improvement effect will be enhanced and loaded together The amount of floor displacement at the time is also reduced.
[0040]
In fixing the screw, the fixing degree increases and the improvement effect becomes higher when the tip end of the screw penetrates the plate-like member and protrudes about several millimeters from the lower part of the plate-like member.
[0041]
Next, when the floating floor member is composed of a plurality of layered members, it may be composed of only a wooden board, but the plasterboard or vibration damping material as the layered member has a low screw fixing degree, so it must It is good to fix between wood board materials using board material.
[0042]
In order to make the bending rigidity of the floating floor member uniform, a plurality of layered members can be stacked and fixed so that the seams do not overlap, and a floor finishing material can be provided on the surface.
[0043]
The wooden board is laminated and fixed in the direction perpendicular to the long side of the upper wooden board to the long side of the lower wooden board so that the joint of the lower wooden board and the upper wooden board are shifted. Can do. That is, if the seam is at the same position, an extremely weak portion is formed due to impact or load. At this time, the shifting length of the seam is preferably about 300 mm, but it is preferable to secure at least 100 mm.
[0044]
It is preferable that the fixed pitch between the respective laminar members of the floating floor member is 100 to 350 mm in the vertical and horizontal directions between the wooden boards. Even if it is fixed more densely than 100 mm, the sound performance does not improve and the workability deteriorates, so it is not necessary to make it shorter than 100 mm. If it exceeds 350 mm, the soundproofing performance gradually deteriorates, which is not preferable. By doing so, the integration of the floating floor member is exhibited, and the effect of improving the sound performance is increased, while the load displacement amount is also reduced. This is presumably because the impact and load are received by the entire floating floor member, the impact is distributed throughout the floor, and the amount of load per unit area of the floor is reduced.
[0045]
At this time, a fixing screw can be used. In such a case, it is preferable that the tip of the screw penetrates and is exposed on the lower surface of the layered member such as a lower wooden board material because the fixing degree is increased. .
[0046]
Any floor finishing material may be used for the surface of the floating floor member. However, since the floating floor structure of the present invention has a great effect of improving the lightweight floor impact sound, the sound-proofing floor finishing material is disadvantageous in terms of cost, and should be used. There is no.
[0047]
Finally, as clearance processing of the floor outer circumference, the ventilation between the floating floor lower space and the room above the floating floor is ensured, and the construction is completed by installing a ventilation skirting board to close the clearance for aesthetic reasons.
[0048]
The present invention will be described in more detail with reference to the drawings. In the drawings, the same reference numerals denote the same members and the like unless otherwise specified.
FIG. 1 is a plan view showing the arrangement of soundproof members and the fixed pitches of the soundproof members and the lowermost layer member according to the first embodiment. FIG. 2 is a cross-sectional view of the floating floor structure according to the first embodiment. FIG. 3 is a plan view illustrating a fixed pitch between the layered members according to the first embodiment.
[0049]
FIG. 4 is a plan view illustrating a fixed pitch between the layered members according to the second embodiment. FIG. 5 is a plan view showing the arrangement of the soundproof members and the fixed pitches of the soundproof members and the lowermost layer member according to the third embodiment. FIG. 6 is a plan view illustrating a fixed pitch between the layered members according to the third embodiment. FIG. 7 is a plan view showing the arrangement of the soundproof members and the fixed pitches of the soundproof members and the lowermost layer member according to the fourth embodiment. FIG. 8 is a plan view illustrating a fixed pitch between the layered members according to the fourth embodiment.
[0050]
As shown in FIGS. 1 to 3, the floating floor structure 1 according to an example of the present invention includes a floor base plate 2, a plurality of soundproof members 3 on the floor base plate 2, and a floating floor member 4 on each soundproof member 3. Each soundproof member 3 has a plurality of impact absorbing members 3A and a plate-like member 3B on each impact absorbing member 3A. The floating floor structure 1 is characterized in that the lowermost layer member 4A and the plate-like member 3B of the floating floor member 4 are fixed at a pitch of 50 to 200 mm.
[0051]
FIG. 1 shows the arrangement of the soundproof member 3 on the second floor base plate 2 of the first and second embodiments, the arrangement of the particle board as the lowermost layer member 4A of the floating floor member 4, and the screws 5 to the plate-like member 3A of the soundproof member 3. It is a top view which shows the fixed pitch.
[0052]
There is a wall on the outer periphery of the floor base plate 2 (not shown in the figure), and there is a gap 6 between the wall and the floating floor member 4 (represented here by a particle board).
[0053]
The soundproofing members 3 are arranged along the walls in the vicinity of the outer edge of the floor base plate 2, and the soundproofing members 3 are also arranged at a pitch of 360 mm parallel to the long side of the room on the floor base plate 2 surrounded by the inside. ing.
[0054]
A particle board, which is the lowermost layer member 4A of the floating floor member 4, is placed on the plate-like member 3B of the soundproofing member 3, and the end of the short side of the lowermost layer member 4A is the width of the plate-like member 3B of the soundproofing member 3. A seam 7 is formed by being fixed on the direction center line. The lowermost layer member 4 </ b> A and the plate-like member 3 </ b> B form fixing portions by screws 5 at a pitch of 100 mm in two rows.
[0055]
In FIG. 2, the particle board as the lowermost layer member 4A of the floating floor member 4 is indicated by a dotted line, and the vibration damping material as the layered member 8A is placed thereon (omitted in FIG. 2), and the upper side thereof. The particle board as the layered member 8B is shown by a solid line.
[0056]
The long side of the layered member 8B on the layered member 8A is orthogonal to the long side of the lowermost layer member 4A, and the seam 9 of the lowermost layer member 4A and the joint 10 of the layered member 8B on the layered member 8A are 300 mm. They are displaced so that the seams do not match.
[0057]
The lowermost layer member 4A of the upper and lower layers forming the floating floor member 4 and the layered member 8B are fixed by screws 11, and the fixing pitch can be as shown in FIG. The pitch is 200 mm in the vertical direction and 150 mm in the horizontal direction.
[0058]
FIG. 3 is a cross-sectional view of the floating floor structure of Example 1 (the basic components are common to Examples 2 to 4 and Comparative Example 1). In Example 2 etc., the fixed pitch by the screw 5 between the plate-like member 3B of the soundproof member 3 in FIG. 3 and the lowermost layer member 4A of the floating floor member 4, the penetration state of the screw 5, the lowermost layer member 4A of the floating floor member 4 Although the fixed pitch by the screw 11 between the screw and the layered member 8B and the penetration state of the screw 11 are different from those of the first embodiment, a representative example is shown as the first embodiment.
[0059]
As shown in detail in FIG. 3, the ALC floor slab 15 and the like can be fixed to the steel beam 12 by using a fixing material 14 via a vibration-proof rubber 13. Between a plurality of adjacent ALC floor slabs 15, a particle board 16 can be laid on the ALC floor slab 15 and connected and integrated with screws 17 to form the floor base plate 2.
[0060]
The soundproofing member 3 is disposed on the floor base plate 2 via the adhesive layer 18, and the soundproofing member 3 is obtained by fixing a plurality of impact absorbing materials 3A, 3C, 3D to the plate-like member 3B. (In FIG. 3, the soundproofing member looks like one, but in practice, a plurality of the soundproofing members are used apart from each other and are arranged on the connected and integrated floor base plate 2).
[0061]
A particle board as the lowermost layer member 4A of the floating floor member 4 is disposed on the soundproof member 3, and is fixed to the plate-like member 3B of the soundproof member 3 using a number of screws 5. The tip of the screw 5 can be penetrated to the lower side of the plate-like member 3B.
[0062]
On the lowermost layer member 4A, a damping material as the layered member 8A is laid, and a particle board as another layered member 8B is laid thereon, and the lowermost layer member 4A and the upper layered member 8B are The uppermost layered member 8B is fixed with a number of screws 11 so as to penetrate the lowermost lowermost layer member 4A. The tip of the screw 11 penetrates the lower surface of the lowermost layer member 4A.
[0063]
A floating floor member 4 is formed thereon by fixing a flooring material as the layered member 8 </ b> C to the layered member 8 </ b> B below the floor nail 19.
[0064]
Although omitted in FIGS. 1 to 3, the fitting portion between the floor and the wall on the outer periphery of the floor can be finished with a ventilation base so that the surrounding gap is not visible.
[0065]
FIG. 4 is a plan view showing a fixed pitch between the layered members 4A and 8B of the floating floor member 4 in the floating floor structure 21 of the second embodiment. The arrangement of the particle board as the layered member 8B on the particle board as the lowermost layer member 4A and the damping material (not shown in FIG. 4) as the layered member 8A and the fixed pitch of the screws 11 are shown.
[0066]
As in FIG. 2, there is a wall on the outer periphery of the floating floor member 4, and a gap 6 can be provided between the floor and the wall. The particle board of the lowermost layer member 4A of the floating floor member 4 is indicated by a dotted line, and the particle board of the upper layered member 8B is indicated by a solid line. The long side of each particle board is arranged in the direction perpendicular to each other in the lower particle board and the upper particle board, and the seam 9 and the seam 10 are shifted by 300 mm so as not to coincide with each other. Moreover, the fixing | fixed part by the bis | screw 11 to the particle board below from the top has a vertical pitch of 400 mm and a horizontal pitch of 500 mm.
[0067]
FIG. 5 is a plan view showing the arrangement of the soundproof members 32 and the fixed pitches of the plate-like members 32B and the lowermost layer members 4A of the soundproof members 32 in the floating floor structure 31 of the third embodiment. The soundproofing member 32 that is half the length of the soundproofing member 3 used in the first and second embodiments is used, the arrangement of the soundproofing member 3 along the wall on the outer periphery of the floor is eliminated, and the soundproofing member 32 is parallel to the long side direction of the room. Arrange at a pitch of 300 mm.
[0068]
Since the joint 7 at the short end of the particle board of the lowermost layer member 4A is arranged on the center line in the width direction of the plate-like member 32B of the soundproof member 32, the interval between some of the soundproof members 32 is slightly shifted from the 300 mm pitch. Yes. In the particle board of the plate-like member 32B of the soundproof member 32 and the lowermost layer member 4A, the seam 7 portion of the short end portion of the lowermost layer member 4A is fixed in two rows, the other is in one row, and is fixed with screws 5 at a pitch of 50 mm. .
[0069]
FIG. 6 shows the particle board of the lowermost layer member 4A with a dotted line in the floating floor structure 31 of the third embodiment, and omits the vibration damping material of the layered member on the particle board. The particle board as the layered member 8B used above is shown by a solid line.
[0070]
2 and 4, the upper and lower two-layer particle boards are arranged in the direction in which the long sides are orthogonal to each other, the seams 9 and 10 are arranged to be shifted by 300 mm, and a plane showing a fixing portion by screws 11 of the upper and lower particle boards. FIG. The screw fixing portions have a pitch of 300 mm in both length and width.
[0071]
FIG. 7 is a plan view showing the arrangement of the particle board of the soundproof member 32 and the lowermost layer member 4A, and the fixing of the plate-like member 32B of the soundproof member 32 and the particle board with the screws 5 in the floating floor structure 41 of the fourth embodiment.
[0072]
The soundproof members 32 are not arranged along the walls of the room, but are arranged in parallel to the long side of the room, and the intervals are 540 mm. The soundproof member 32 is a soundproof member 32 that is half the length of the soundproof member 3 used in the first and second embodiments, as in the third embodiment.
[0073]
The particle board of the lowermost layer member 4A is arranged so as to provide a gap 6 with the wall of the room. The plate-like member 32B of the soundproof member 32 and the particle board of the lowermost layer member 4A form a fixed portion by screws 5 at a pitch of 150 mm in two rows.
[0074]
FIG. 8 shows, in the floating floor structure 41 of the fourth embodiment, the particle board of the lowermost layer member 4A is indicated by a dotted line in the same manner as in FIGS. 2 and 4, and the vibration damping material of the layered member thereon is omitted. The particle board as the layered member 8B used above is shown by a solid line.
[0075]
2 and 4, the upper and lower two-layer particle boards are arranged in the direction in which the long sides are orthogonal to each other, the seams 9 and 10 are arranged to be shifted by 300 mm, and a plane showing a fixing portion by screws 11 of the upper and lower particle boards. FIG. The screw fixing portions have a pitch of 150 mm in both length and width.
[0076]
【Example】
The present invention will be described based on examples and comparative examples with reference to the drawings.
Example 1
A floating floor structure as shown in Figs.
After the anti-vibration rubber is placed on the steel beam on the second floor of the steel framed house, the ALC floor slab (100 mm thick x 606 mm wide x 1818 mm long) is placed on the anti-vibration rubber on the steel beam. Are arranged so as to support and fixed by a fixing member.
[0077]
Thereafter, on the ALC floor slab, a particle board of 15 mm thickness × 910 mm width × 1818 mm length is fixed from the particle board with an ALC screw in a direction orthogonal to the long side of the ALC floor slab. Adjacent ALC slabs are fixed at a pitch of about 300 mm in length and width to form an integrated floor slab. The upper and lower rooms of the same location are used for the first floor and the second floor, both of which are 6 tatami mats.
[0078]
A soundproof member prepared in advance is fixed on the floor. There are three types of sound-absorbing members prepared in advance: impact absorbing members A, B, and C. These are plate-like members made of a particle board of 20 mm thickness × 100 mm width × 1760 mm length, 8 A and 8 B , C are attached, and a 1 mm thick adhesive layer is provided on the floor base plate side fixing surfaces of A and B.
[0079]
The soundproof member is fixed at a position where the center line in the width direction of the plate-like member is 100 mm from the wall along the wall on the outer periphery of the floor, and between the center lines in the width direction of the plate-like member at a pitch of 360 mm, The long side of the member is installed and fixed in a direction perpendicular to the long side of the particle board on the ALC floor slab.
[0080]
While installing the soundproof member, a particle board of 20 mm thickness x 909 mm width x 1818 mm length is placed on the soundproof member in a direction perpendicular to the long side of the soundproof member, and the soundproof member plate member is arranged in two rows in the longitudinal direction. The screw length is fixed to 51 mm so that the screw tip penetrates the lower surface of the plate-like member at a screw interval of 100 mm pitch.
[0081]
The soundproofing member was adjusted so that the short end of the particle board was on the center line in the width direction of the plate-like member, so the installation pitch of the soundproofing member was slightly shifted in the part where the short end of the particle board was located . It is installed with a 5mm gap from the wall around the floor.
[0082]
Next, a damping material having a specific gravity of 2.5 of 8 mm thickness x 455 mm width x 910 mm length was laid on the entire surface, and then a particle board of 15 mm thickness x 910 mm width x 1818 mm length was placed with the long side below the damping material The particle board is placed at a distance of 300 mm so as to be orthogonal to the long side of the particle board and the seam does not overlap, and is fixed with a screw length of 51 mm so that the screw tip penetrates the bottom surface of the particle board under the damping material. The fixed screw pitch is 200 mm long and 150 mm wide.
[0083]
Next, a flooring material having a thickness of 12 mm × 303 mm width × 1818 mm is fixed to the lower particle board with a floor nail at a pitch of 300 mm. Fix the long side of the flooring material in a direction perpendicular to the long side of the underlying particle board. Next, a 10-mm thick ventilation skirting board is attached to the gap with the wall to complete the floating floor structure.
[0084]
Evaluate the performance of floating floor structures. The heavy floor impact sound is measured using the impact source as a tire. Moreover, the displacement amount of the floor when the floor load is 60, 80 and 120 kg is measured at five locations on the floor. The results are shown in Table 1.
[0085]
(Example 2)
A floating floor structure as shown in FIGS.
The flooring material of the floating floor member of Example 1 is removed while paying attention to the ventilation baseboard, and the screws are pulled out so that the fixed pitch of the 20 mm thick particle board and the 15 mm thick particle board at the bottom layer of the floating floor member is 400 mm long and 450 mm wide. . Next, the flooring material is fixed with a floor nail at 300 pitches, a floating floor structure is constructed, and the same test as in Example 1 is performed. The results are shown in Table 1.
[0086]
(Example 3)
A floating floor structure as shown in FIGS.
As in Example 1, a particle board is laid on the ALC floor slab, and the ALC floor slab and the particle board are screw-fixed at a pitch of 300 mm to form a connected integrated floor slab.
[0087]
The soundproofing member used in Example 1 was cut into half lengths, and shock absorbing members A, B, and C each consisted of four pieces of A on a plate-like member made of a particle board of 20 mm thickness × 100 mm width × 880 mm length. , B and 4 are set as soundproof members. An adhesive layer having a thickness of 1 mm is provided on the floor base plate side fixed surfaces of the impact absorbing members A and B.
[0088]
The soundproof member has a length of 20 mm × 909 mm width × 1818 mm, with the long side of the soundproof member parallel to the long side of the room, and the center line in the width direction of the soundproof member is arranged at a pitch of 300 mm. Place the particle board. At this time, the pitch of the soundproofing member is partially adjusted so that the short end portion of the particle board is supported on the center line in the width direction of the plate-like member of the soundproofing member.
[0089]
The soundproofing member and the particle board are fixed to the plate-like member of the soundproofing member in a row at a pitch of 50 mm with a screw having a length of 51 mm so that the tip of the screw passes through the lower surface of the plate-like member. At this time, the particle board is set so that a gap of 5 mm is formed from the wall.
[0090]
Next, a damping material having a specific gravity of 2.5 of 8 mm thickness x 455 mm width x 910 mm length is laid on the particle board, on which the long side and the long side of the lower particle board are perpendicular to each other, and the seam is A particle board of 15 mm thickness x 909 mm width x 1818 mm length is arranged so as to be displaced by 300 mm, and fixed with screws at a vertical and horizontal pitch of 300 mm. At this time, the screw tip is fixed at a screw length of 51 mm so as to penetrate the lower surface of the lower particle board.
[0091]
Next, the flooring material (12 mm thickness x 303 mm width x 1818 mm length) is fixed with a floor nail in the direction in which the long side and the long side of the upper particle board are orthogonal to each other. A floating floor structure is constructed and the performance is evaluated in the same manner as in Example 1. The results are shown in Table 1.
[0092]
Example 4
The floating floor structure shown in Figs.
In the same manner as in Example 3, with the ALC floor slab and the particle board, the other members are removed to the state of the connected integrated floor slab, and the soundproofing member used in Example 3 is used to form the soundproofing member in the longitudinal direction of the room. The longitudinal direction is provided in parallel, the soundproofing member is arranged so that the distance between the long sides of the soundproofing member is 540 mm, and the particle board of 20 mm thickness × 909 mm width × 1818 mm length is screw-fixed.
[0093]
At this time, the plate-like member of the soundproof member and the particle board are fixed in two rows with a pitch of 150 mm and a screw length of 51 mm, with the screw tip penetrating through the lower surface of the plate-like member.
[0094]
Next, a damping material having a specific gravity of 2.5 of 8 mm thickness x 455 mm width x 910 mm length was laid on the particle board, and on that, the particle board was 15 mm thick x 909 mm wide x 1818 mm long with the lower particle board and the long side. They are arranged so that the seams are perpendicular to each other and are shifted by 300 mm, and are fixed with a screw length of 51 mm so that the tip of the screw penetrates the lower surface of the lower particle board at a pitch of 150 mm vertically and horizontally.
[0095]
Next, a flooring material (12 mm thickness × 303 mm width × 1818 mm length) is fixed to the particle board with a floor nail in a direction in which the long side of the particle board is orthogonal to the long side. Here, all the floating floor members including the finishing material are provided with a clearance of 5 mm from the wall. The gap is treated with a ventilation skirting board to finish the floating floor structure, and the heavy floor impact sound and the floor displacement amount are tested in the same manner as in Example 1.
[0096]
(Comparative Example 1)
A floor structure as shown in FIGS. 1, 9 and 10 is constructed.
FIG. 9 is a plan view showing the arrangement of the soundproof members and the fixed pitch of the soundproof members and the lowermost layer member according to Comparative Example 1. 10 is a plan view showing a fixed pitch between layered members according to Comparative Example 1. FIG.
[0097]
In Comparative Example 1, the arrangement of the soundproof member 3, the arrangement of the particle board as the lowermost layer member 4A of the floating floor member 4, and the fixing by the screws 5 between the plate-like member 3B and the lowermost layer member 4A of the soundproof member 3 are shown in FIG. As shown in.
[0098]
The soundproofing member and the floating floor member provide a gap between the outer periphery of the floating floor structure and the wall (not shown in the figure), and the soundproofing member extends along the wall on the floor base plate inside the wall and on the long side of the room. Place them in parallel. The arrangement of such soundproof members is exactly the same as in Examples 1 and 2, and the distance between the soundproof members is 360 mm.
[0099]
The difference from the first and second embodiments is that the fixing pitch between the plate-like member and the lowermost layer member of the soundproofing member is 100 mm in two rows in the first and second embodiments, whereas the comparative example. In the case of 1, 1 row has a pitch of 300 mm.
[0100]
Specifically, in Comparative Example 1 of FIG. 9, the particle board as the bottom layer member of the floor structure is indicated by a dotted line, and the arrangement of the particle board above the vibration damping layer (omitted in FIG. 9) is lower layer. The particle board and the long side are arranged in a direction perpendicular to each other, the seam is 300 mm, there is a gap with the wall on the outer periphery of the floor (not shown in FIG. 9), and the screw fixing portion between the upper and lower particle board is vertically and The horizontal pitch is 450 mm.
[0101]
In the floor structure of this example, after the experiment of Example 2, the bottom layer particle board of the floating floor member on the soundproof member is removed, the plate member of the soundproof member and the fixing screw of the particle board are removed, and the plate shape of the soundproof member is again formed. The member and the particle board are fixed at a pitch of 300 mm in one row. At this time, a 38 mm long screw that does not penetrate the lower surface of the plate-like member is used.
[0102]
Next, a damping material having a specific gravity of 2.5 of 8 mm thickness x 455 mm width x 1818 mm length is laid on the particle board, and a particle board of 15 mm thickness x 909 mm width x 1818 mm length is placed on the particle board. It arrange | positions in the direction orthogonal to a side, and a seam shifts 300 mm.
[0103]
A 41 mm long screw is used between the upper and lower particle boards, and the screw tip is fixed to the lower surface of the lower particle board without penetrating. Next, a flooring material (12 mm thick × 303 mm wide × 1818 mm long) is fixed in a direction perpendicular to the long side of the lower particle board with a floor nail, and a gap around the wall is treated with a ventilation baseboard to form a floor structure. In the same manner as in Example 1, the weight impact sound and the floor displacement amount are measured. The results are summarized in Table 1.
[0104]
[Table 1]

[0105]
Hereinafter, experimental results of Examples and Comparative Examples will be described based on Table 1.
In Example 1, the screw fixing pitch of the plate-like member of the soundproof member and the particle board which is the lowest layer member of the floating floor member is 100 mm in two rows.
[0106]
Further, the screw tip is passed through and fixed to the lower surface of the plate-like member. The lowermost layer member and the upper layered member are fixed at a pitch of 200 mm in length and a pitch of 150 mm in width. The soundproofing members were installed along the wall on the outer periphery of the floor and arranged at a pitch of 360 mm inside.
[0107]
As a result, at a decision frequency of 63 Hz, L_H51, which is 3 dB higher than that of Comparative Example 1. All other frequencies have also been improved. Only the difference in the fixed density between the upper and lower particle boards of the layered member of the floating floor member and the fixed pitch of the plate member of the soundproofing member_H-54 to L_HIt can be improved to -51, which is not a new member added, but can be improved only by construction measures. This is a very big improvement. It can also be seen that the amount of floor displacement is very small and the load resistance is improved.
[0108]
Example 2 is an example in which the fixation between the particle boards of the layered member of the floating floor member of Example 1 is changed to 400 mm in length and 450 mm in width. The rest is the same as in the first embodiment.
[0109]
Compared to Comparative Example 1, the plate member of the soundproofing member and the particle board of the lowermost layer member are basically fixed to 300 mm in one example in Comparative Example 1, and the screw tip does not penetrate through the lower surface of the support material. As a result, L of Comparative Example 1_H-54 to L_HImproved to -52. It is also greatly improved here, and the degree of fixing of the plate-like member of the soundproofing member is a major factor for improvement, and the fixing between the layered members of the floating floor member is also an improvement point that cannot be ignored from the difference from Example 1. . Also, it can be seen that the floor displacement is very small and the load resistance is very effective.
[0110]
Example 3 is an example in which the plate-like member of the soundproof member and the particle board of the lowermost layer member of the floating floor member are fixed at a pitch of 50 mm in one row.
[0111]
Moreover, this example is an example in which fixing between the upper and lower particle boards of the layered member of the floating floor member is performed at a pitch of 300 mm in length and width.
[0112]
In this example, the arrangement of the soundproofing member was not arranged along the wall, and the soundproofing member was the same as that used in Examples 1 and 2 and Comparative Example 1, and only the length was used as a half size. The distance between the long sides of the soundproofing member was 300 mm. However, in order to receive the short side edge part of the lowest layer member of a floating floor member on the width direction line | wire of a soundproof member, some variation was given partially.
[0113]
As a result, L_H-51, it can be seen that the degree of improvement is large despite the same configuration as in Comparative Example 1. In addition, the amount of floor displacement is very small, and the effect of improving load resistance is great.
[0114]
Example 4 is an example in which the plate-like member of the soundproof member and the particle board of the lowermost layer member are fixed in two rows at a pitch of 150 mm.
[0115]
Further, this example is an example in which the screw tip is passed through the lower surface of the plate-like member, the fixing between the upper and lower particle boards of the layered member of the floating floor member is set to a pitch of 150 mm vertically and horizontally, and the screw tip is passed through the lower surface of the lower particle board.
[0116]
Further, in this example, as in Example 3, the soundproofing member was not disposed along the wall, but the distance between the long sides of the soundproofing member was 540 mm parallel to the longitudinal direction of the room.
[0117]
As a result, L_H-52, it can be seen that the degree of improvement is large despite the same configuration as in Comparative Example 1. In addition, the amount of floor displacement is very small, and the effect of improving load resistance is great.
[0118]
From the above, as shown in Examples 1 to 4, conventionally, it has been difficult to improve heavy floor impact sound in buildings with a low degree of fixation, but can be improved without adding new members, and the amount of screws in terms of cost. Since the construction time is almost the same, the floating floor structure in a low-fixed building is very effective in improving the superimposed floor impact sound while suppressing an increase in cost.
[0119]
【The invention's effect】
According to the floating floor structure of the present invention, the lowermost layer member of the floating floor member and the plate-like member of the soundproof member are fixed at a predetermined dense fixed pitch, so that the lowermost layer member of the floating floor member is the plate-like member of the soundproof member. This increases the thickness of the material and acts as a concavo-convex plate, changes the vibration transmission pattern between the floating floor member and the soundproofing flooring material, and remarkably improves the vibration suppression and the accompanying noise prevention performance.
[Brief description of the drawings]
FIG. 1 is a plan view showing an arrangement of soundproof members and a fixed pitch of soundproof members and a lowermost layer member according to Example 1;
FIG. 2 is a cross-sectional view of a floating floor structure according to a first embodiment.
3 is a plan view showing a fixed pitch between layered members according to Example 1. FIG.
4 is a plan view showing a fixed pitch between layered members according to Example 2. FIG.
FIG. 5 is a plan view showing the arrangement of soundproof members and the fixing pitch of the soundproof members and the lowermost layer member according to Example 3;
6 is a plan view showing a fixed pitch between layered members according to Example 3. FIG.
FIG. 7 is a plan view showing the arrangement of soundproofing members according to Example 4 and the fixing pitch of the soundproofing members and the lowermost layer member.
8 is a plan view showing a fixed pitch between layered members according to Example 4. FIG.
FIG. 9 is a plan view showing the arrangement of soundproof members and the fixed pitches of the soundproof members and the lowermost layer member according to Comparative Example 1;
10 is a plan view showing a fixed pitch between layered members according to Comparative Example 1. FIG.
[Explanation of symbols]
1 Floating floor structure
2 Floor base plate
3 Soundproof material
4 Floating floor materials
3A, 3C, 3D Shock absorbing member
3B Plate member
4A Bottom layer member
5,11,17 screw
6 Clearance
8A, 8B Layered member
7, 9, 10 joints
12 Steel beams
13 Anti-vibration rubber
14 Fixing material
15 ALC floor slab
16 Particle board
19 Floor Nail

Claims (2)

A floor base plate, a plurality of soundproof members on the floor base plate, and a floating floor member on each of the soundproof members, wherein the soundproof member includes a plurality of shock absorbing members and a plate-like member on each of the shock absorbing members; The bottom layer member of the floating floor member is supported by a plate-like member of the soundproof member, the end of the bottom layer member is supported by the soundproof member, and the soundproof member has an elongated shape. cages, said floating floor and said plate-shaped member and the bottom layer member is a screw fixing in two rows fixed pitch in one column fixed or 100 ~ 200 mm pitch 50 to 150 mm of members, bis tip portion the plate The lowermost layer member of the floating floor member is penetrated through the member, and the tip end portion of the screw protrudes from the lower part of the plate-like member by several millimeters so as to increase the fixing degree, and is fixed at the predetermined dense fixing pitch. Increases the thickness of the plate member of the soundproof member and Is formed, soundproofing member, from the wall of the outer periphery of the floor base plate away by a distance of 50 ~ 200 mm, it is placed at arbitrary intervals on the floor base plate on the inside of the wall along the wall surface The bottom layer member of the floating floor member, except for the outer peripheral part of the floor, when the long side of the soundproof member and the bottom layer member are used substantially in parallel, the long side end of the bottom layer member is the center of the short side of the plate member. Fixed on the line, forming the seam of the lowermost layer member, and when using the long side of the soundproof member and the long side of the lowermost layer member so as to intersect, the short side end of the lowermost layer member is the plate of the soundproof member The base material is fixed on the short side center line, forming the seam of the lowermost layer member, providing a gap between the floating floor member and the outer wall of the floor, and a ventilation baseboard that ensures air permeability in the finishing material Floating floor structure characterized by providing . A floor slab, a plurality of soundproof members on the floor slab, and a floating floor member on each of the soundproof members, wherein the soundproof member includes a plurality of shock absorbing members and a plate-like member on each of the shock absorbing members. In constructing the floating floor structure, an elongated soundproof member is used, the bottom layer member of the floating floor member is supported by the plate member of the soundproof member, and the end of the bottom layer member is supported by the soundproof member, the floating floor The lowermost member of the member and the plate-like member are fixed with screws by fixing in one row with a pitch of 50 to 150 mm or fixing with two rows with a pitch of 100 to 200 mm. At that time, let the screw tip penetrate through the plate-like member The top end of the screw protrudes from the lower part of the plate member by several millimeters so that the degree of fixation is increased , and the bottom layer member of the floating floor member is formed as an uneven plate while increasing the thickness of the plate member of the soundproof member is allowed, the soundproof member, 50 ~ 200 mm from the wall of the outer periphery of the floor base plate Installed at an arbitrary distance on the floor base plate inside the wall along the wall surface at a distance away, and when forming the joint of the bottom layer member of the floating floor member, excluding the outer periphery of the floor, When the long side of the soundproof member and the lowermost layer member are used substantially in parallel, the long side end of the lowermost layer member is fixed on the short side center line of the plate member, and the long side of the soundproof member and the longest side of the lowermost layer member Are used so as to intersect with each other, the short side end of the lowermost layer member is fixed on the short side center line of the plate-like member of the soundproof member, and a clearance is provided between the floating floor member and the outer wall of the floor, and the finishing material The construction method of the floating floor structure characterized by providing a ventilation skirting board which ensured air permeability .

Images