JP2778713B2 - Floor structure - Google Patents
Floor structureInfo
- Publication number
- JP2778713B2 JP2778713B2 JP63315795A JP31579588A JP2778713B2 JP 2778713 B2 JP2778713 B2 JP 2778713B2 JP 63315795 A JP63315795 A JP 63315795A JP 31579588 A JP31579588 A JP 31579588A JP 2778713 B2 JP2778713 B2 JP 2778713B2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- floor
- plate
- soundproof layer
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Floor Finish (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、コンクリートスラブ等の床基盤上に支持
体を介して上部に床板が取付けられる床下地構造に関す
るものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor base structure in which a floor board is mounted on a floor base such as a concrete slab via a support.
コンクリートスラブ等の床基盤上に支持体を介して上
部に床板が取付けられる床下地は、所謂乾式二重床と呼
ばれ、木製や鋼製の大引き・根太工法や置床工法が知ら
れている。大引き・根太やレベル調整可能な支持脚は、
床下地を支持するための支持体を構成している。床下地
とコンクリートスラブ等の床基盤との間には空気層が形
成される。A floor base on which a floor plate is mounted on a floor base such as a concrete slab via a support body on a floor base is called a so-called dry double floor, and a wooden or steel large-scale joist method and a floor placing method are known. . The support legs that can be adjusted, joist and level adjustable,
It constitutes a support for supporting the floor substrate. An air layer is formed between the floor base and the floor base such as a concrete slab.
このような乾式二重床の仕上材としては、近年木質系
仕上材が多用されるようになったが、カーペット等に比
べ椅子の引きずりや物の落下に際して衝撃が床下地に伝
わり易く、支持体を通して床基盤に固定音となって伝わ
り、階下へ大きな音を運ぶことになった。そこで、二重
床の中には置床のように支持脚下端に防振ゴムを取付け
て固体音の伝達を防止する方法が採られるようになっ
た。しかしながら、二重床においては、支持体から伝わ
る固体音だけでなく、床下地下面から放射される音で床
下空間の音圧レベルが上昇し、それが床基盤を通して階
下に伝わることもあり、未だ充分な遮音効果が得られな
いものであった。In recent years, wood-based finishing materials have been widely used as a finishing material for such dry double floors.However, when a chair is dragged or an object falls, the impact is more likely to be transmitted to the floor substrate than a carpet or the like. The sound was transmitted to the floor base as a fixed sound, and a loud sound was carried downstairs. Therefore, a method has been adopted in which a vibration isolating rubber is attached to the lower end of the support leg to prevent transmission of solid sound, as in the case of a floor. However, in a double floor, the sound pressure in the underfloor space rises due to not only the solid sound transmitted from the support but also the sound radiated from the lower surface of the floor substrate, which may be transmitted downstairs through the floor base. A sufficient sound insulation effect could not be obtained.
そこで、この発明は、床下空間への音の伝達（放射）
を抑え、床衝撃音遮断性能に優れると共に、施工性の向
上及び制振効果をもたらすことができる床下地構造を提
供することを目的とする。Therefore, the present invention provides transmission (radiation) of sound to a space under the floor.
An object of the present invention is to provide an underfloor structure that is capable of suppressing floor noise, having excellent floor impact sound insulation performance, improving workability, and providing a vibration damping effect.
上述の目的を達成するため、この請求項１に係る発明
は、コンクリートスラブ等の床基盤上に支持体を介して
上部に床板が取り付けられる床下地構造において、吸音
材の下面に遮音材を備えた防音層を床板の下面に設ける
とともに、前記防音層の上面に板状の取付板を配したも
のである。In order to achieve the above-mentioned object, the invention according to claim 1 has a sound-absorbing material on a lower surface of a sound-absorbing material in a floor base structure in which a floor plate is mounted on a floor base such as a concrete slab via a support. The soundproof layer is provided on the lower surface of the floor plate, and a plate-like mounting plate is arranged on the upper surface of the soundproof layer.
また、この請求項２に係る発明は、コンクリートスラ
ブ等の床基盤上に支持体を介して上部に床板が取り付け
られる床下地構構造において、吸音材の下面に遮音材を
備えた防音層を床板の下面に設けるとともに、前記防音
層の上面に制振材を配したものである。Further, the invention according to claim 2 is characterized in that, in a floor-substructure structure structure in which a floor plate is mounted on a floor base such as a concrete slab via a support, a soundproof layer provided with a sound insulating material on a lower surface of a sound absorbing material is provided. And a vibration damping material is arranged on the upper surface of the soundproof layer.
この発明では、吸音材の下面に遮音材を備えた防音層
を床板の下面に設けてあるので、床下空間に放射される
固体音を吸収，遮蔽し、床下音圧を下げることができ
た。According to the present invention, since the soundproof layer provided with the sound insulating material on the lower surface of the sound absorbing material is provided on the lower surface of the floorboard, solid sound radiated into the underfloor space can be absorbed and shielded, and the underfloor sound pressure can be reduced.
以下にこの発明の好適な実施例を図面に参照にして説
明する。Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
第１図に示す第１実施例では、コンクリートスラブ等
の床基盤２上に支持体３を介して床下地１を形成すると
共に、この床下地１の上部に仕上材４を取付けてある。
支持体３は、レベル調整可能な支持脚3Aとこの支持脚3A
の下端に設けた防振ゴム3Bとからなる。床下地１は吸音
材５の下面に遮音材６を備えた防音層７を有する。この
防音層７の上面には下地パネル８を取付けてあり、この
下地パネル８の上面には捨張材９を設け、捨張材９の上
面に仕上材４を取付けてある。仕上材４は木質系の床板
を使用した。ここで下地パネル８と捨張材９とが床板を
構成し、この床板の下面に防音層７を設けてある。吸音
材５としては、グラスウール，ロックウール等の無機軟
質吸音材、セラミックフォーム等の硬質吸音材、或いは
連続気泡を有する高分子系フォーム材等を使用すること
ができる。遮音材６としては、高分子系シート材料、鉄
板・制振鋼板等の金属の成形板を用いることができる。In the first embodiment shown in FIG. 1, a floor base 1 is formed on a floor base 2 such as a concrete slab via a support 3 and a finishing material 4 is attached to an upper portion of the floor base 1.
The support 3 includes a support leg 3A whose level can be adjusted and the support leg 3A.
And a vibration-proof rubber 3B provided at the lower end of the cover. The floor substrate 1 has a soundproof layer 7 provided with a sound insulating material 6 on the lower surface of the sound absorbing material 5. A base panel 8 is mounted on the upper surface of the soundproof layer 7, a pruning material 9 is provided on the upper surface of the base panel 8, and a finishing material 4 is mounted on the upper surface of the pruning material 9. As the finishing material 4, a wooden floorboard was used. Here, the base panel 8 and the waste material 9 constitute a floor plate, and the soundproof layer 7 is provided on the lower surface of the floor plate. As the sound absorbing material 5, an inorganic soft sound absorbing material such as glass wool and rock wool, a hard sound absorbing material such as a ceramic foam, or a polymer foam material having open cells can be used. As the sound insulating material 6, a polymer sheet material, a metal molded plate such as an iron plate or a vibration damping steel plate can be used.
第１図で使用した防音層７は、第２図に示すように鉄
板或いは制振鋼板等の金属成形板を用いてこれをチィン
ネル状に曲げ形成した遮音材６の上に吸音材５を設け
た。このような防音層７の所定の個所には支持脚3Aを挿
通するための貫通孔10を形成すると共に、遮音材６の側
壁には下地パネル８を釘或いはビス止めして吸音材５上
に取付けるための孔11を形成してある。As shown in FIG. 2, the soundproof layer 7 used in FIG. 1 is provided with a sound absorbing material 5 on a sound insulating material 6 formed by bending a metal formed plate such as an iron plate or a damping steel plate into a channel shape. Was. A through hole 10 for inserting the support leg 3A is formed at a predetermined portion of the soundproof layer 7, and a base panel 8 is nailed or screwed on the side wall of the sound insulating material 6 so as to be formed on the sound absorbing material 5. A hole 11 for attachment is formed.
防音層７としては、第３図に示すようなものも使用可
能である。即ち、吸音材５と遮音材６を同一寸法のもの
とし、両者を接着一体化したものであり、下地パネル８
に対しては、防音層７の下面から釘12を直接打ち込むよ
うにしてある。このような防音層７を使用した第２実施
例を第４図に示す。As the soundproof layer 7, a layer as shown in FIG. 3 can be used. That is, the sound absorbing material 5 and the sound insulating material 6 have the same size, and both are bonded and integrated.
, A nail 12 is directly driven from the lower surface of the soundproof layer 7. A second embodiment using such a soundproof layer 7 is shown in FIG.
第５図は更に別の防音層７を示し、鉄板や制振鋼板等
の金属成形板を用いて形成される遮音材６の形状を変え
たものを示し、先の実施例における貫通孔10の代わり
に、遮音材６の一部に窪み部6Aを形成し、この窪み部6A
に支持脚3Aの上端側が入り込むための雌ねじ部6Bを形成
してある。この防音層７を使用した第３実施例を第６図
に示す。FIG. 5 shows another soundproofing layer 7 in which the shape of a sound insulating material 6 formed by using a metal molded plate such as an iron plate or a vibration damping steel plate is changed. Instead, a recess 6A is formed in a part of the sound insulating material 6, and the recess 6A is formed.
A female screw portion 6B is formed to allow the upper end side of the support leg 3A to enter. A third embodiment using this soundproof layer 7 is shown in FIG.
第７図に示すものは、第３図に示すような防音層７の
上面に板状の取付板13を取付け、吸音材５を遮音材６と
取付板13とで挟んだものであり、取付板13に取付孔13A
を形成し、この取付孔13Aから釘やビス等を下地パネル
８に打ち込むようになっている。このような取付板13を
設けた第４実施例を第８図に示す。FIG. 7 shows a structure in which a plate-like mounting plate 13 is mounted on the upper surface of the soundproof layer 7 as shown in FIG. 3, and the sound absorbing material 5 is sandwiched between the sound insulating material 6 and the mounting plate 13. Mounting hole 13A in plate 13
A nail, a screw, or the like is driven into the base panel 8 from the mounting hole 13A. A fourth embodiment provided with such a mounting plate 13 is shown in FIG.
第９図に示す第５実施例は、支持体３として大引き3C
と根太3Dを使用したものを示し、根太3Dの間に防音層７
を取付けたものである。この防音層７としては遮音材６
の両端にフランジ部6Bを形成し、これらフランジ部6Bが
根太3D上に乗り、当該フランジ部6Bの個所で根太3Dに取
付けるようになっている。この防音層７の上面に床板を
構成する捨張材９を取付け、捨張材９の上部に仕上材４
を取付けてある。この第９図で使用される防音層７を第
10図に示す。この実施例では床板は捨張材９のみから成
り、下地パネル８を使用していない。The fifth embodiment shown in FIG.
And 3D using joist 3D, soundproof layer 7 between joist 3D
Is attached. The soundproofing layer 7 includes a sound insulating material 6
Flange portions 6B are formed at both ends of the joist 3D, the flange portions 6B ride on the joists 3D, and are attached to the joists 3D at the locations of the flange portions 6B. On the upper surface of the soundproofing layer 7 is attached a piling material 9 constituting a floor plate.
Is installed. The soundproofing layer 7 used in FIG.
Figure 10 shows. In this embodiment, the floorboard is made of only the sloping material 9, and the base panel 8 is not used.
第11図に示す第６実施例は、防音層７の上部に制振材
14を設けたものを示す。制振材14としては、無機材料を
充填した高分子系制振材等が好適である。The sixth embodiment shown in FIG.
14 is shown. As the damping material 14, a polymer-based damping material filled with an inorganic material is suitable.
第12図に示すグラフは、遮音性能を測定したものであ
り、JIS A1418に基づいて軽量衝撃源を用いてテストし
たものである。床基盤２を構成するコンクリートスラブ
の厚みは150mmとした。グラフ中Ｉは第１図の実施例に
おいて防音層７が存在しないものを示し、IIは第１図に
示す実施例であり、IIIは第11図に示す実施例であり、
それぞれ実験結果を示すものである。グラフ中遮音等級
を示すＬ−40等は次の通りである。The graph shown in FIG. 12 is obtained by measuring the sound insulation performance, and is tested by using a lightweight impact source based on JIS A1418. The thickness of the concrete slab constituting the floor base 2 was 150 mm. In the graph, I represents the embodiment of FIG. 1 in which the soundproof layer 7 was not present, II was the embodiment shown in FIG. 1, III was the embodiment shown in FIG.
Each shows an experimental result. L-40 and the like indicating the sound insulation grade in the graph are as follows.
ここで使用された防音層７を構成する吸音材５は、グ
ラスウールに32kg/m2グレードで厚み50mmのものを用
い、遮音材６として高分子系材料の遮音シートＰ＝1.8
を使用した。防音層７を床板下部に設けることにより軽
量衝撃源に対する遮音性能が１ランク（5dB）改善され
たことが分かる。更に第11図に示す実施例では、制振材
14を有することにより更に床衝撃音遮断性能が向上する
ことが判明した。 As the sound absorbing material 5 constituting the sound insulating layer 7 used here, glass wool having a thickness of 32 kg / m 2 and a thickness of 50 mm was used. As the sound insulating material 6, a polymer material sound insulating sheet P = 1.8
It was used. It can be seen that the provision of the soundproofing layer 7 below the floorboard improved the sound insulation performance against a lightweight impact source by one rank (5 dB). Further, in the embodiment shown in FIG.
It was found that the floor impact noise insulation performance was further improved by having 14.
以上説明したように、この発明では、吸音材の下面に
遮音材を備えた防音層を床板の下面に設けたので、椅子
の引きずりや物の落下で床板が振動して床下空間に放射
される固体音を吸収・遮断し、床下音圧を下げることが
でき、その結果として階下に伝わる床衝撃音レベルも低
減することとなる。As described above, in the present invention, since the soundproof layer provided with the sound insulating material on the lower surface of the sound absorbing material is provided on the lower surface of the floor plate, the floor plate vibrates when the chair is dragged or the object falls and is radiated to the underfloor space. Solid sound can be absorbed and blocked, and the sound pressure under the floor can be reduced, and as a result, the floor impact sound level transmitted downstairs can also be reduced.
また、請求項１に係る発明によれば、防音層の上面に
板状の取付板を配したので、施工性を大幅に向上させる
ことができる。Further, according to the first aspect of the present invention, since the plate-shaped mounting plate is provided on the upper surface of the soundproof layer, the workability can be significantly improved.
さらに、請求項２に係る発明によれば、防音層の上面
に制振材を配したので、制振効果が付与され、衝撃音を
さらに効果的に抑制することができる。Furthermore, according to the second aspect of the present invention, since the vibration damping material is provided on the upper surface of the soundproof layer, a vibration damping effect is provided, and the impact sound can be more effectively suppressed.
第１図はこの発明の第１実施例を示す断面図、第２図は
第１図で使用した防音層を示す斜視図、第３図は他の防
音層を示す斜視図、第４図は第３図に示す防音層を使用
した第２実施例を示す断面図、第５図は更に別の防音層
を示す斜視図、第６図は第５図に示す防音層を用いた第
３実施例を示す断面図、第７図は取付け板を防音層に取
付けた例を示す斜視図、第８図は第７図に示すものを用
いた第４実施例を示す断面図、第９図は第５実施例を示
す一部切欠きの斜視図、第10図は第９図に用いた防音層
を示す斜視図、第11図は第６実施例を示す断面図、第12
図は防音層を有するものと有さないものとの遮音性能を
測定したグラフである。 １……床下地、 ２……床基盤、 ３……支持体、 ４……仕上材、 ５……吸音材、 ６……遮音材、 ７……防音層。 13……取付板、 14……制振材1 is a sectional view showing a first embodiment of the present invention, FIG. 2 is a perspective view showing a soundproof layer used in FIG. 1, FIG. 3 is a perspective view showing another soundproof layer, and FIG. 3 is a cross-sectional view showing a second embodiment using the soundproof layer shown in FIG. 3, FIG. 5 is a perspective view showing another soundproof layer, and FIG. 6 is a third embodiment using the soundproof layer shown in FIG. FIG. 7 is a perspective view showing an example in which a mounting plate is attached to a soundproof layer, FIG. 8 is a sectional view showing a fourth embodiment using the one shown in FIG. 7, and FIG. FIG. 10 is a partially cutaway perspective view showing the fifth embodiment, FIG. 10 is a perspective view showing the soundproof layer used in FIG. 9, FIG. 11 is a sectional view showing the sixth embodiment, and FIG.
The figure is a graph in which the sound insulation performance was measured with and without a soundproof layer. DESCRIPTION OF SYMBOLS 1 ... Floor base, 2 ... Floor base, 3 ... Support, 4 ... Finishing material, 5 ... Sound absorbing material, 6 ... Sound insulation material, 7 ... Soundproof layer. 13… Mounting plate, 14… Damping material
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) E04F 15/18 601 E04F 15/00 601 E04F 15/00 101 E04F 15/02Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) E04F 15/18 601 E04F 15/00 601 E04F 15/00 101 E04F 15/02
Claims (2)
支持体（３）を介して上部に床板（４・８・９）が取り
付けられる床下地構造において、 吸音材（５）の下面に遮音材（６）を備えた防音層
（７）を床板（４・８・９）の下面に設けるとともに、 前記防音層（７）の上面に板状の取付板（13）を配した ことを特徴とする床下地構造。1. A floor base structure in which a floor plate (4, 8, 9) is mounted on a floor base (2) such as a concrete slab via a support (3), wherein a lower surface of a sound absorbing material (5) is provided. A sound-insulating layer (7) provided with a sound-insulating material (6) is provided on the lower surface of the floor plate (4, 8.9), and a plate-like mounting plate (13) is arranged on the upper surface of the sound-insulating layer (7). Characteristic floor base structure.
支持体（３）を介して上部に床板が取り付けられる床下
地構造において、 吸音材（５）の下面に遮音材（６）を備えた防音層
（７）を床板（４・８・９）の下面に設けるとともに、 前記防音層（７）の上面に制振材（14）を配した ことを特徴とする床下地構造。2. A floor base structure in which a floor board is mounted on a floor base (2) such as a concrete slab via a support (3), and a sound insulating material (6) is provided on a lower surface of the sound absorbing material (5). An underfloor structure, characterized in that a soundproof layer (7) is provided on the lower surface of the floorboard (4, 8.9) and a vibration damper (14) is arranged on the upper surface of the soundproof layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63315795A JP2778713B2 (en) | 1988-12-14 | 1988-12-14 | Floor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63315795A JP2778713B2 (en) | 1988-12-14 | 1988-12-14 | Floor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02161062A JPH02161062A (en) | 1990-06-20 |
| JP2778713B2 true JP2778713B2 (en) | 1998-07-23 |
Family
ID=18069645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63315795A Expired - Fee Related JP2778713B2 (en) | 1988-12-14 | 1988-12-14 | Floor structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2778713B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100653596B1 (en) * | 2005-11-04 | 2006-12-05 | 나승철 | Floor structure for reducing noise of apartment |
| JP2017066686A (en) * | 2015-09-29 | 2017-04-06 | 積水化学工業株式会社 | Sound insulation floor structure, sound insulation floor structure of building, and method for constructing sound insulation floor in building |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61157638U (en) * | 1985-03-23 | 1986-09-30 | ||
| JPS6339408A (en) * | 1986-08-04 | 1988-02-19 | 藤井電工株式会社 | Ropeway type laying method for transmission line |
-
1988
- 1988-12-14 JP JP63315795A patent/JP2778713B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02161062A (en) | 1990-06-20 |
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