JP2009197556A - Vibration isolation/sound insulation structure for floor substrate - Google Patents

Vibration isolation/sound insulation structure for floor substrate Download PDF

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JP2009197556A
JP2009197556A JP2008043358A JP2008043358A JP2009197556A JP 2009197556 A JP2009197556 A JP 2009197556A JP 2008043358 A JP2008043358 A JP 2008043358A JP 2008043358 A JP2008043358 A JP 2008043358A JP 2009197556 A JP2009197556 A JP 2009197556A
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floor
vibration
base material
peripheral wall
sound
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JP5114242B2 (en
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Masahiro Nakagawa
雅博 中川
Yoshiaki Kaji
良明 鍜治
Norihide Arakane
仙英 荒金
Yoshihiro Okada
芳弘 岡田
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration-isolation/sound insulation floor substrate structure capable of insulating propagation of impact generated on a floor to a floor below and another room. <P>SOLUTION: The vibration-isolation/sound-insulation structure for a floor substrate is composed as follows. The flat-plate shaped floor substrate 10 such as a metal plate, a reinforced concrete plate or the like, floating from a floor base 2 without touching it, is brought to be supported by a peripheral wall 1 of a structural skeleton via a shock absorber 11 in a trampoline-like way. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、戸建住宅やアパート、マンションなどの集合住宅などの建築構造物に好適に使用される防振・防音床下地構造に関するものである。   The present invention relates to an anti-vibration / sound-proof floor structure that is preferably used for a building structure such as a detached house, an apartment, an apartment house, or the like.

戸建住宅やマンションなどの複数階建ての建物において、居室内や廊下で、飛び跳ね、走行、歩行、物の落下などによっての床に衝撃が加わると、その振動や衝撃音は建物の構造躯体を通じて下方に伝わるため、直下階の住人が騒音の被害を受ける可能性がある。   In a multi-storey building such as a detached house or a condominium, when an impact is applied to the floor due to jumping, running, walking, falling objects, etc. in a living room or hallway, the vibration and impact sound are transmitted through the structural frame of the building. Since it travels downward, residents on the lower floor may be damaged by noise.

従来では、このような床に発生する衝撃の下階への伝播を抑制するために、上層階の床下では、床下地材を直接、コンクリートなどの躯体に張らず、複数の支持脚を介して設置することが実施されている。また、支持脚と床下地材の接合部分に弾性体を介設させて衝撃を緩和させるようにした床下地構造も提案されている。たとえば特許文献１には、床材を直接載置する根太と床梁との間に弾性体を介在させた床構造が開示されている。
特開２００１−１８２２１１号公報 Conventionally, in order to suppress the propagation of the impact generated on the floor to the lower floor, the floor base material is not directly stretched on a concrete body such as concrete under the upper floor, but via a plurality of support legs. Installation is carried out. There has also been proposed a floor foundation structure in which an elastic body is interposed at a joint portion between a support leg and a floor foundation material so as to reduce impact. For example, Patent Document 1 discloses a floor structure in which an elastic body is interposed between a joist on which a floor material is directly placed and a floor beam.
JP 2001-182221 A

しかしながら、この種の支持脚で床を支持する構造では、床材を支持する複数の支持脚が構造躯体に接触しているため、複数の支持脚を介した振動や音の固体伝播を完全に遮断することはできず、振動、騒音の下階への伝播を解消するための根本的な解決策とはなっていなかった。   However, in this type of structure in which the floor is supported by the support legs, the support legs that support the flooring are in contact with the structural housing, so that vibration and sound solid propagation through the support legs are completely prevented. It could not be cut off and was not the fundamental solution to eliminate vibration and noise propagation to the lower floor.

本発明は、このような事情を考慮して提案されたもので、その目的は、床に発生する衝撃が下階や他室に伝わることを遮断できる防振・防音床下地構造を提供することにある。   The present invention has been proposed in view of such circumstances, and an object of the present invention is to provide a vibration-proof / sound-proof floor foundation structure capable of blocking the impact generated on the floor from being transmitted to the lower floor and other rooms. It is in.

上記目的を達成するために、請求項１に記載の防振・防音床下地構造は、平板状の床下地材を、床基礎に接触させないようにして、緩衝体を介在させて構造躯体の周壁に支持させたことを特徴とする。   In order to achieve the above object, the vibration-proof / sound-proof floor foundation structure according to claim 1 is configured such that the flat floor foundation material is not brought into contact with the floor foundation, and a buffer is interposed to surround the peripheral wall of the structural frame. It is characterized by being supported by.

請求項２に記載の防振・防音床下地構造では、床下地材は、その周縁部が緩衝体によって周壁の下部に連結されて、略水平に保持されている。   In the vibration-proof / sound-proof floor foundation structure according to claim 2, the peripheral edge portion of the floor foundation material is connected to the lower portion of the peripheral wall by the buffer and is held substantially horizontally.

請求項３に記載の防振・防音床下地構造では、床下地材は、その周縁部の上面が緩衝体によって周壁の下部に懸吊されて、略水平に保持されている。   In the vibration-proof / sound-proof floor foundation structure according to the third aspect, the floor foundation material is held substantially horizontally with the upper surface of the peripheral edge thereof suspended from the lower portion of the peripheral wall by the buffer.

請求項１に記載の防振・防音床下地構造では、床下地材が緩衝体を介して周壁に支持される構造であり、床下地材から床基礎に振動を伝達する固体がないため、床に発生した振動は、床の下方には固体を通じて伝播されない。また振動は周壁側へ逃がす構造であるが、緩衝体により振動が吸収されるため、周壁への振動伝播はほとんど遮断される。これによって、下階で騒音が発生するおそれはほとんどなく、他室や上階に振動や音が伝わる可能性もきわめて低い。   In the anti-vibration / sound-proof floor foundation structure according to claim 1, the floor foundation material is a structure supported by the peripheral wall through a buffer, and there is no solid that transmits vibration from the floor foundation material to the floor foundation. The vibration generated in is not propagated through the solid below the floor. Moreover, although it is the structure where a vibration is released to the surrounding wall side, since a vibration is absorbed by the buffer body, the vibration propagation to a surrounding wall is interrupted | blocked most. As a result, there is almost no risk of noise being generated on the lower floor, and the possibility of vibration or sound being transmitted to other rooms or the upper floor is extremely low.

請求項２に記載の防振・防音床下地構造では、床下地材が周壁に連結されて略水平に保持される構造であるため、床下地材をトランポリン状に簡易に施工し、設置できる。また、周設された緩衝体を床仕上材で隠すことができる。さらに、床下地材を側方から張設するように支持する構成であるため、横揺れが起こりにくい。   In the vibration and soundproof floor foundation structure according to claim 2, since the floor foundation material is connected to the peripheral wall and held substantially horizontally, the floor foundation material can be easily constructed and installed in a trampoline shape. Moreover, the surrounding buffer body can be hidden with a flooring material. Further, since the floor base material is supported so as to be stretched from the side, the roll hardly occurs.

請求項３に記載の防振・防音床下地構造では、床下地材が周壁に懸吊支持されて略水平に保持される構造であるため、緩衝体に対して、緩衝体の伸張、収縮方向以外からの力が加わりにくく、そのため、連結支持にくらべて緩衝体の劣化を遅らせることができ、また連結支持に使用する緩衝体よりも強度の低いものを使用できる。   In the anti-vibration / sound-proof floor foundation structure according to claim 3, the floor foundation material is suspended and supported on the peripheral wall and is held substantially horizontally. It is difficult to apply a force from other than the above, so that the deterioration of the buffer can be delayed compared to the connection support, and a lower strength than the buffer used for the connection support can be used.

以下に、本発明の２つの実施形態について、添付図面を参照しながら説明する。   In the following, two embodiments of the present invention will be described with reference to the accompanying drawings.

図１は、本発明の第１の実施形態に係る防振・防音床下地構造の概略縦断面図であり、図２は、同床下地構造の概略平面図である。図例ではマンションなどの複数階建ての上層階（第２階以上の階。以下、当階という。）の居室を示しており、図１では説明の都合上、当階の直下階も図示している。   FIG. 1 is a schematic longitudinal sectional view of a vibration and soundproof floor foundation structure according to the first embodiment of the present invention, and FIG. 2 is a schematic plan view of the floor foundation structure. The example in the figure shows a room on the upper floor of a multi-story building such as a condominium (second floor and higher floors; hereinafter referred to as the current floor). In FIG. 1, the floor directly below the floor is also shown for convenience of explanation. ing.

床下地材１０は、鉄などの金属板または鉄筋コンクリートなどのコンクリート板などの剛性の高い平板で構成されており、居室の周壁１で囲まれた平面よりも平面寸法が小さく、５〜２０ｍｍ程度の厚さ寸法のものが使用される。   The floor base material 10 is composed of a highly rigid flat plate such as a metal plate such as iron or a concrete plate such as reinforced concrete, and has a plane dimension smaller than the plane surrounded by the peripheral wall 1 of the living room and is about 5 to 20 mm. Thickness dimensions are used.

床下地材１０の周縁部１０ａの側端には、周壁１との間の緩衝体１１としてスプリングが周設され、それらのスプリング１１の他端が、鉄筋コンクリートなどで製された構造躯体である周壁１、あるいは構造躯体に固定された周壁１に固定されて、床下地材１０がスプリング１１とともに略水平に保持されている。図例のものは、床下地材１０の周縁部に、５００ｍｍピッチでスプリング１１を配設している。なお、スプリング１１の床下地材１０および周壁１へ固定する際はアンカーボルト１３などが使用できる。   A spring is provided around the side edge of the peripheral edge portion 10a of the floor base material 10 as a buffer 11 between the peripheral wall 1 and the other wall of the spring 11 is a structural wall made of reinforced concrete or the like. 1 or a peripheral base 1 fixed to a structural frame, and a floor base material 10 is held substantially horizontally together with a spring 11. In the illustrated example, springs 11 are arranged at a pitch of 500 mm on the peripheral edge of the floor base material 10. In addition, when fixing the spring 11 to the floor base material 10 and the peripheral wall 1, an anchor bolt 13 or the like can be used.

また床仕上材１２は、床下地材１０よりも平面寸法をやや大とし、周設されたスプリング１１がほとんど表面に露出されないようにして、床下地材１０の上に設置され、接着剤などで固着されることが望ましい。なお、床仕上材１２の側端は周壁１と固着させずに、壁面と摺動できる程度に設置することが望ましい。   Further, the floor finishing material 12 has a slightly larger planar dimension than the floor base material 10 and is placed on the floor base material 10 so that the spring 11 provided around the surface is hardly exposed on the surface. It is desirable to be fixed. In addition, it is desirable to install the side edge of the floor covering 12 so that it can slide on the wall without being fixed to the peripheral wall 1.

このように、居室内の床下地材１は、トランポリンのごとく、床基礎２（下方の構造躯体）から浮いた状態に、周壁１のみによって連結され、略水平な状態に支持される。   As described above, the floor base material 1 in the living room is connected to the floor foundation 2 (lower structural housing) only by the peripheral wall 1 and supported in a substantially horizontal state, like a trampoline.

このような床構造であるため、居室内で子供が飛び跳ねたり、走ったりして床が衝撃を受けても、その振動は周壁１方向へ伝播するが、緩衝体１１が介在して衝撃を吸収できる構造としているため、振動は周壁１にはほとんど伝わらず、下方の構造躯体２にも伝わらない。   Because of such a floor structure, even if a child jumps or runs in the room and receives an impact on the floor, the vibration propagates toward the peripheral wall 1, but the shock absorber 11 is interposed to absorb the impact. Since the structure can be made, vibration hardly transmits to the peripheral wall 1 and also does not transmit to the lower structural housing 2.

また、床下地材１０が床基礎２上に支持脚などを介して支持される構造ではないため、スプリング１１以外の部材による固体伝播はなく、床振動の伝播はスプリング１１によってほとんど吸収、遮断され、下階で騒音が発生するおそれはほとんどない。もちろん、他室や当階の上階に振動や音が伝わる可能性もきわめて低い。また、床下地材１０を側方から張設するように支持する構造であるため、横揺れに強く、床下地材１０の揺れは起こりにくい。   Further, since the floor base material 10 is not structured to be supported on the floor foundation 2 via support legs or the like, there is no solid propagation by members other than the spring 11, and the propagation of floor vibration is almost absorbed and blocked by the spring 11. There is almost no risk of noise on the lower floor. Of course, the possibility of vibration and sound being transmitted to other rooms and the upper floor of this floor is extremely low. In addition, since the floor base material 10 is supported so as to be stretched from the side, the floor base material 10 is resistant to rolling and the floor base material 10 is unlikely to sway.

本実施形態では、緩衝体１１としてスプリングを例示したが、ショックアブソーバーを使用してもよい。また、劣化の進行の遅いゴムを使用してもよい。   In the present embodiment, a spring is exemplified as the buffer body 11, but a shock absorber may be used. Moreover, you may use the rubber | gum which progresses slowly.

ついで、第２の実施形態について説明する。   Next, the second embodiment will be described.

図３（ａ）は、本発明の第２の実施形態に係る床下地構造の概略縦断面図であり、（ｂ）は（ａ）のＸ部分の拡大図である。なお、平面図は省略するが、緩衝体１１の設置ピッチ、設置数は第１の実施形態のものと同程度でよい。   FIG. 3A is a schematic longitudinal sectional view of a floor foundation structure according to the second embodiment of the present invention, and FIG. 3B is an enlarged view of a portion X in FIG. Although a plan view is omitted, the installation pitch and the number of installations of the shock absorbers 11 may be the same as those in the first embodiment.

このものは、周壁１の全内周に水平方向に走る凹溝１ａが形成されており、床下地材１０の周縁部１０ａがその凹溝１ａに入り込んでおり、床下地材１０は、凹溝１ａの上壁１ａａに固定されたスプリングなどの緩衝体１１を介して、周縁部１０ａの上面が懸吊されて、略水平な状態に支持されている。そして、床下地材１０の上には床仕上材１２が固着される。なお、スプリング１１は、床下地材１０、周壁１に対して、アンカーボルト１３で固定することが望ましい。   In this, a concave groove 1a running in the horizontal direction is formed on the entire inner periphery of the peripheral wall 1, and a peripheral edge portion 10a of the floor base material 10 enters the concave groove 1a. The upper surface of the peripheral portion 10a is suspended and supported in a substantially horizontal state via a buffer 11 such as a spring fixed to the upper wall 1aa of 1a. Then, the floor finishing material 12 is fixed on the floor base material 10. The spring 11 is preferably fixed to the floor base material 10 and the peripheral wall 1 with anchor bolts 13.

なお、床下地材１０および床仕上材１２の素材は第１の実施形態と同様であるが、それらの平面寸法は、凹溝１ａを考慮して、周壁１で囲まれる平面の寸法よりもやや大きいものが使用される。   The materials of the floor base material 10 and the floor finishing material 12 are the same as those in the first embodiment, but their plane dimensions are slightly larger than the dimensions of the plane surrounded by the peripheral wall 1 in consideration of the concave groove 1a. Larger ones are used.

また、図３に示すように、床仕上材１２を設置しても凹溝１ａの床仕上材１２の上側に隙間ができて溝内のスプリング１１が露出される場合は、壁面パネル３などでこれを隠すことが好ましい。この壁面パネル３の下端部と、床仕上材１２の周縁部１０ａの上面との間に緩衝材４介設させて、壁面パネル３と床仕上材１２との間の隙間が露出されないようにすることが望ましい。なお、この緩衝材４は幅木として代用できる。   In addition, as shown in FIG. 3, when the floor finishing material 12 is installed, if a gap is formed above the floor finishing material 12 in the groove 1a and the spring 11 in the groove is exposed, the wall panel 3 or the like is used. It is preferable to hide this. The cushioning material 4 is interposed between the lower end portion of the wall surface panel 3 and the upper surface of the peripheral edge portion 10a of the floor finishing material 12 so that the gap between the wall surface panel 3 and the floor finishing material 12 is not exposed. It is desirable. In addition, this buffer material 4 can be substituted as a skirting board.

このような床構造によれば、第１の実施形態と同様の効果が得られるとともに、懸吊支持であるため、スプリング１１に対して、スプリング１１の伸張、収縮方向以外からの力が加わりにくく、そのため、第１の実施形態とくらべてスプリング１１の劣化を遅らせることができ、また第１の実施形態のものよりも強度の低いスプリングを使用できる。   According to such a floor structure, the same effects as those of the first embodiment can be obtained, and since it is a suspension support, it is difficult to apply a force to the spring 11 from other than the expansion and contraction directions of the spring 11. Therefore, the deterioration of the spring 11 can be delayed as compared with the first embodiment, and a spring having a lower strength than that of the first embodiment can be used.

また、床下地材１０の安定性を高めるために、床下地材１０の周縁部１０ａの裏側を他の緩衝手段を介して凹溝１ａの下壁１ａｂと連結させるようにしてもよい。つまり、床下地材１０を凹溝１ａの下壁１ａｂに設けた他の緩衝手段に載せ置くようにしてもよい。他の緩衝手段として、建築用の免震、制震用の種々の緩衝手段を使用してもよい。   Further, in order to increase the stability of the floor base material 10, the back side of the peripheral edge portion 10a of the floor base material 10 may be connected to the lower wall 1ab of the groove 1a through another buffering means. That is, you may make it place the floor base material 10 on the other buffer means provided in the lower wall 1ab of the ditch | groove 1a. As other shock absorbing means, various shock absorbing means for building seismic isolation and vibration control may be used.

さらに、床下地材１０の緩衝体１１による支持は、第１の実施形態で示した張設支持と、第２の実施形態で示した懸吊支持と、載置支持とを種々組み合わせてなされてもよい。たとえば、張設支持用にショックアブソーバー、懸吊支持用にスプリング、載置支持用にゴムを組み合わせ使用することもできる。たとえば、図４に示すように、床下地材１０の懸吊支持はショックアブソーバー１１Ａにより行わせ、載置支持は圧縮スプリング１１Ｂにより行わせることができる。   Furthermore, the support of the floor base material 10 by the buffer 11 is made by variously combining the tension support shown in the first embodiment, the suspension support shown in the second embodiment, and the placement support. Also good. For example, a shock absorber for tension support, a spring for suspension support, and rubber for placement support can be used in combination. For example, as shown in FIG. 4, the suspension support of the floor base material 10 can be performed by a shock absorber 11A, and the mounting support can be performed by a compression spring 11B.

また図４の例では、壁面パネル３の下端部に、下方向に付勢されスライド可能に取り付けた幅木５を設けて、壁面パネル３と床仕上材１２との間の隙間を形成しないようにしている。そのため、床仕上材１２の若干の上下動があっても、居室内では隙間が露出されることはない。   Further, in the example of FIG. 4, a baseboard 5 that is urged downward and slidably attached is provided at the lower end portion of the wall panel 3 so as not to form a gap between the wall panel 3 and the floor covering 12. I have to. Therefore, even if there is a slight vertical movement of the floor covering 12, no gap is exposed in the room.

また、揺れに強い第１の実施形態の支持構造をベースとして、懸吊支持、載置支持を付加調整することで、防音・防振、制震などあらゆる効果を最適な状態に設定にすることができる。   In addition, based on the support structure of the first embodiment that is resistant to shaking, the suspension support and mounting support are additionally adjusted so that all effects such as soundproofing, vibration isolation, and vibration control are set to the optimum state. Can do.

以上の２つの実施形態では、床下地材１０が金属板あるいはコンクリート板などの平板材で構成されたものを示したが、パーティクルボードなどの木質板や樹脂板などの平板材を使用してもよく、強度を増すために、平板材の裏側に根太などの補強材を格子状に取り付けてもよい。   In the above two embodiments, the floor base material 10 has been shown to be composed of a flat plate material such as a metal plate or a concrete plate. However, a flat plate material such as a wooden board such as a particle board or a resin board may be used. In order to increase the strength, a reinforcing material such as joist may be attached to the back side of the flat plate material in a lattice shape.

本発明の第１の実施形態に係る防振・防音床下地構造の概略縦断面図である。It is a schematic longitudinal cross-sectional view of the vibration-proof and sound-insulating floor foundation structure which concerns on the 1st Embodiment of this invention. 同床下地構造の概略平面図である。It is a schematic plan view of the same floor foundation structure. （ａ）は本発明の第２の実施形態に係る防振・防音床下地構造の概略縦断面図、（ｂ）は（ａ）のＸ部分の拡大図である。(A) is a schematic longitudinal cross-sectional view of the vibration-proof and soundproof floor foundation structure which concerns on the 2nd Embodiment of this invention, (b) is an enlarged view of X part of (a). 本発明の第２の実施形態に係る床下地構造の他例を示す部分縦断面図である。It is a fragmentary longitudinal cross-section which shows the other example of the floor foundation structure which concerns on the 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１０ 床下地材
１０ａ 周縁部
１１ スプリング（緩衝体）
１１Ａ ショックアブソーバー（緩衝体）
１１Ｂ スプリング（緩衝体）
１２ 床仕上材
１３ アンカーボルト
１ 周壁
１ａ 凹溝
１ａａ 上壁
１ａｂ 下壁
２ 床基礎（下方の構造躯体）
３ 壁面パネル 10 floor base material 10a peripheral edge 11 spring (buffer body)
11A Shock absorber (buffer)
11B Spring (buffer body)
12 Floor finishing material 13 Anchor bolt 1 Peripheral wall 1a Groove 1aa Upper wall 1ab Lower wall 2 Floor foundation (lower structural frame)
3 Wall panels

Claims (3)

平板状の床下地材を、床基礎に接触させないようにして、緩衝体を介在させて構造躯体の周壁に支持させたことを特徴とする防振・防音床下地構造。   An anti-vibration / soundproof floor foundation structure characterized in that a flat floor foundation material is supported on a peripheral wall of a structural frame with a buffer interposed so as not to contact the floor foundation. 請求項１において、
上記床下地材は、その周縁部が上記緩衝体によって上記周壁の下部に連結されて、略水平に保持されている、防振・防音床下地構造。 In claim 1,
The floor base material is a vibration-proof / sound-proof floor base structure in which a peripheral portion thereof is connected to a lower portion of the peripheral wall by the buffer body and is held substantially horizontally. 請求項１において、
上記床下地材は、その周縁部の上面が上記緩衝体によって上記周壁の下部に懸吊されて、略水平に保持されている、防振・防音床下地構造。 In claim 1,
The floor base material is a vibration-proof / sound-proof floor base structure in which an upper surface of a peripheral edge portion thereof is suspended by a lower portion of the peripheral wall by the buffer body and is held substantially horizontally.
JP2008043358A 2008-02-25 2008-02-25 Anti-vibration / sound insulation floor structure Expired - Fee Related JP5114242B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014231716A (en) * 2013-05-30 2014-12-11 トヨタホーム株式会社 Floor structure in building
JP2020190141A (en) * 2019-05-23 2020-11-26 住友理工株式会社 Floor sound insulation structure

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JPS5749138U (en) * 1980-09-05 1982-03-19
JPS62203337U (en) * 1986-06-17 1987-12-25
JPH04351343A (en) * 1991-05-30 1992-12-07 Kumagai Gumi Co Ltd Antiseismic device
JPH11325175A (en) * 1998-05-20 1999-11-26 East Japan Railway Co Suspending and sliding combined type base isolation/ vibration control structure
JP2003155797A (en) * 2001-11-19 2003-05-30 Iida Kenchiku Sekkei Jimusho:Kk Floor support structure in building
JP2004316420A (en) * 2004-06-14 2004-11-11 Tatsuji Ishimaru Base-isolated structure
JP2005180178A (en) * 2005-02-25 2005-07-07 Atsumi Yamamoto Sound insulating floor slab structure

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JPS5749138U (en) * 1980-09-05 1982-03-19
JPS62203337U (en) * 1986-06-17 1987-12-25
JPH04351343A (en) * 1991-05-30 1992-12-07 Kumagai Gumi Co Ltd Antiseismic device
JPH11325175A (en) * 1998-05-20 1999-11-26 East Japan Railway Co Suspending and sliding combined type base isolation/ vibration control structure
JP2003155797A (en) * 2001-11-19 2003-05-30 Iida Kenchiku Sekkei Jimusho:Kk Floor support structure in building
JP2004316420A (en) * 2004-06-14 2004-11-11 Tatsuji Ishimaru Base-isolated structure
JP2005180178A (en) * 2005-02-25 2005-07-07 Atsumi Yamamoto Sound insulating floor slab structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014231716A (en) * 2013-05-30 2014-12-11 トヨタホーム株式会社 Floor structure in building
JP2020190141A (en) * 2019-05-23 2020-11-26 住友理工株式会社 Floor sound insulation structure
JP7217200B2 (en) 2019-05-23 2023-02-02 住友理工株式会社 for floorsacoustic structure

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