JP2000073482A - Vibration-damping floor - Google Patents
Vibration-damping floorInfo
- Publication number
- JP2000073482A JP2000073482A JP10244188A JP24418898A JP2000073482A JP 2000073482 A JP2000073482 A JP 2000073482A JP 10244188 A JP10244188 A JP 10244188A JP 24418898 A JP24418898 A JP 24418898A JP 2000073482 A JP2000073482 A JP 2000073482A
- Authority
- JP
- Japan
- Prior art keywords
- slab
- floor
- vibration
- viscoelastic body
- plate body
- 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.)
- Granted
Links
Landscapes
- Floor Finish (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は建物の床の構造に係
わり、特に上下方向の振動を抑制し得る制振床に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a building, and more particularly to a vibration control floor capable of suppressing vertical vibration.
【０００２】[0002]
【従来の技術】近年の建物は、プラン自由度向上を目的
とする大スパン化と、各種建築材料の高性能化による軽
量化が推進され、それに伴い建物の床を構成するコンク
リート造のスラブも大スパンかつ軽量なものとなってき
ている。そのような大スパンかつ軽量の床は構造的強度
は支障はないものの上下方向に振動を生じやすくかつ固
有周期が長くなる傾向にあるので、振動により居住性能
が悪化するといった問題も生じてきている。2. Description of the Related Art In recent years, large-span buildings have been promoted for the purpose of improving the degree of freedom of plans, and weight reduction has been promoted by improving the performance of various building materials. Accordingly, concrete slabs constituting the floors of the buildings have been developed. It is becoming large span and lightweight. Such a large span and lightweight floor does not hinder the structural strength, but tends to generate vibration in the vertical direction and the natural period tends to be long, so that the vibration deteriorates the living performance. .
【０００３】[0003]
【発明が解決しようとする課題】床の振動に対処するも
のとして、地震に対する高度の安全性や信頼性が要求さ
れる機器や振動を極度に嫌う精密機器を対象とする特殊
かつ大掛かりな免震床装置や免震床システムも開発され
ているが、床自体の振動を抑制し得て通常の建物に広く
適用することのできる有効な手段が望まれていた。As a countermeasure against vibration of the floor, a special and large-scale seismic isolation system for equipment requiring high level of safety and reliability against earthquakes and precision equipment which extremely dislikes vibration. Although floor devices and seismic isolation floor systems have been developed, effective means capable of suppressing vibration of the floor itself and being widely applicable to ordinary buildings has been desired.
【０００４】[0004]
【課題を解決するための手段】本発明の制振床は、建物
の床を構成するコンクリート造のスラブの上面側もしく
は下面側に、該スラブに対して面内方向に相対変形可能
な状態で板体を全面的に積層するとともに、それらスラ
ブと板体との間に粘弾性体を接着状態で挟み込んでなる
ものである。前記板体としては前記スラブ上に打設され
たモルタルからなる仕上床を採用することが良い。ま
た、前記粘弾性体は前記スラブと前記板体との間に全面
的に挟み込むことでも良いが、粘弾性体を部分的に挟み
込むことでも良く、その場合には粘弾性体のない部分に
はスラブと板体との間に縁切り材を介装してそれらを非
付着状態に維持することが好ましい。A vibration-damping floor according to the present invention is provided on the upper or lower surface side of a concrete slab constituting a floor of a building so as to be capable of being deformed relative to the slab in an in-plane direction. The plate body is entirely laminated, and a viscoelastic body is sandwiched between the slab and the plate body in an adhesive state. As the plate body, a finished floor made of mortar cast on the slab is preferably used. In addition, the viscoelastic body may be sandwiched entirely between the slab and the plate body, but may be partially sandwiched between the viscoelastic body, and in that case, the viscoelastic body may be partially sandwiched. It is preferable that an edge-cutting material is interposed between the slab and the plate to maintain them in a non-adhered state.
【０００５】[0005]
【発明の実施の形態】図１は本発明の制振床の第１実施
形態を示す断面図で、符号１はスラブ、２はその上面に
全面的に形成された仕上床、３はそれらの間に全面的に
挟み込まれた粘弾性体である。FIG. 1 is a sectional view showing a first embodiment of a vibration-damping floor according to the present invention, wherein reference numeral 1 denotes a slab, 2 denotes a finishing floor formed entirely on the upper surface thereof, and 3 denotes those floors. It is a viscoelastic body entirely sandwiched between them.
【０００６】スラブ１は通常の鉄筋コンクリート造のも
のであり、仕上床２はそのスラブ１上にモルタルが打設
されることで形成されたものである。その仕上床２は目
地を設けることなくスラブ１と同面積の１枚ものとして
形成する。粘弾性体３は自身の粘性抵抗力により減衰効
果を発揮するもので、具体的にはたとえばゴムアスファ
ルト系のもの、アスファルト系のもの、アクリル系のも
の、高減衰ゴム系のもの等が好適に採用可能である。The slab 1 is made of ordinary reinforced concrete, and the finishing floor 2 is formed by casting mortar on the slab 1. The finished floor 2 is formed as one piece having the same area as the slab 1 without providing joints. The viscoelastic body 3 exerts a damping effect by its own viscous resistance force, and specifically, for example, a rubber asphalt-based one, an asphalt-based one, an acrylic-based one, a high attenuation rubber-based one, and the like are preferable. Can be adopted.
【０００７】上記構造の制振床を施工するには、スラブ
１を通常の施工法により形成した後、その上面に高温溶
融状態の粘弾性体３を流し込み、それが固化した後に、
その上にモルタルを打設して仕上床２を形成すれば良
い。以上によりスラブ１と仕上床２との間に粘弾性体３
が自ずと双方に接着された状態で挟み込まれることにな
り、スラブ１と仕上床２とは面内方向に相対変形可能な
状態で積層されことになる。[0007] In order to construct a vibration-damping floor having the above structure, a slab 1 is formed by a normal construction method, and a viscoelastic body 3 in a high-temperature molten state is poured into the upper surface thereof.
The finishing floor 2 may be formed by casting mortar thereon. Thus, the viscoelastic body 3 is placed between the slab 1 and the finishing floor 2.
Are naturally sandwiched in a state where they are bonded to each other, and the slab 1 and the finishing floor 2 are laminated in a state where they can be relatively deformed in the in-plane direction.
【０００８】あるいは他の施工法として、粘弾性体３を
予めシート状に形成しておいてそれをスラブ１上に敷設
して接着しても良いし、２枚の薄鋼板の間に粘弾性体３
を挟み込んだ製品を予め製作しておいてそれをスラブ１
と仕上床２の双方にシヤーキーを用いて固定したり接着
することも考えられる。[0008] Alternatively, as another construction method, the viscoelastic body 3 may be formed in a sheet shape in advance and laid on the slab 1 for bonding, or the viscoelastic body 3 may be placed between two thin steel plates. Body 3
The product which sandwiched in advance was manufactured, and it was slab 1
It is also conceivable to use a shear key to fix or adhere to both the floor and the finishing floor 2.
【０００９】上記構造の制振床は、この制振床自体が振
動して上下方向に撓むように変形した際にはスラブ１と
仕上床２とが面内方向でずれるように相対変形し、それ
らの間で粘弾性体３が変形してその粘性抵抗力により床
振動を抑制し減衰せしめる効果が得られる（その詳細は
図４により後述する）。つまり、この制振床自体が粘弾
性ダンパーとして機能するものであり、軽量かつ大スパ
ンの床であってもその振動を十分に抑制することができ
るものである。When the damping floor having the above structure is deformed so as to vibrate in the vertical direction due to the vibration of the damping floor itself, the slab 1 and the finishing floor 2 are relatively deformed so as to be displaced in the in-plane direction. During this time, the viscoelastic body 3 is deformed, and the effect of suppressing and attenuating the floor vibration by the viscous resistance is obtained (the details will be described later with reference to FIG. 4). In other words, the vibration-damping floor itself functions as a viscoelastic damper, and the vibration can be sufficiently suppressed even if the floor is lightweight and has a large span.
【００１０】なお、上記制振床の各部の寸法は適宜で良
く、通常は粘弾性体３の厚さｔ1は数ｍｍ程度以下、仕
上床２の厚さｔ2は２０〜５０ｍｍ程度で十分である
が、仕上床２の単位面積当たりの軸剛性（面内剛性）を
スラブ１のそれの１０％以上とすることが好ましく、具
体的には仕上床２の厚さｔ2をスラブ１の厚さｔ0の１０
％以上とすることが好ましい。そして、必要であれば、
仕上床２に補強用の金網や鉄筋を埋設することで振動に
よる割れや座屈防止を図れば良い。The dimensions of each part of the vibration-damping floor may be appropriately determined. Usually, the thickness t 1 of the viscoelastic body 3 is about several mm or less, and the thickness t 2 of the finishing floor 2 is about 20 to 50 mm. However, the axial rigidity (in-plane rigidity) per unit area of the finishing floor 2 is preferably 10% or more of that of the slab 1, and specifically, the thickness t 2 of the finishing floor 2 is 10 of thickness t 0
% Is preferable. And if necessary
By embedding a reinforcing wire mesh or reinforcing bar in the finished floor 2, cracks or buckling due to vibration may be prevented.
【００１１】図２は第２実施形態を示すものである。上
記の第１実施形態ではスラブ１と仕上床２との間に粘弾
性体３を全面的に設けたものとしたが、本第２実施形態
では粘弾性体３を部分的に設けたものである。この場合
も第１実施形態と同様の効果が得られるが、この場合に
おいては粘弾性体３の幅（および長さ）寸法ｂは少なく
とも粘性体３の厚みｔ1の１０倍程度以上とすることが
好ましい。また、この場合において、粘弾性体３のない
部分においてスラブ１と仕上床２が強固に固着してしま
うと、それらの相対変形が損なわれて粘弾性体３の変形
が阻害され、したがって振動抑制効果が損なわれるか
ら、スラブ１と仕上床２との間に剥離剤やシート等の縁
切り材４を介装してスラブ１と仕上材２とが相対変形し
得る状態を維持すれば良い。FIG. 2 shows a second embodiment. In the first embodiment described above, the viscoelastic body 3 is entirely provided between the slab 1 and the finishing floor 2, but in the second embodiment, the viscoelastic body 3 is partially provided. is there. In this case as well, the same effects as in the first embodiment can be obtained, but in this case, the width (and length) dimension b of the viscoelastic body 3 should be at least about 10 times or more the thickness t 1 of the viscous body 3. Is preferred. Further, in this case, if the slab 1 and the finishing floor 2 are firmly fixed in a portion where the viscoelastic body 3 is not provided, their relative deformation is impaired, and the deformation of the viscoelastic body 3 is hindered. Since the effect is impaired, a slab 1 and the finishing material 2 may be interposed between the slab 1 and the finishing floor 2 to maintain a state in which the slab 1 and the finishing material 2 can be relatively deformed.
【００１２】図３は第３実施形態を示すものである。上
記第１、第２実施形態は大スパンの床、特に短辺寸法が
６ｍ以上の床に適用して好適なものであるが、本第３実
施形態は第２実施形態の構造を片持ちのスラブ１に適用
したものであり、特に振動の生じやすい跳ね出し長さが
２ｍ以上となる場合においてもその振動を十分に抑制し
得るものとなる。FIG. 3 shows a third embodiment. Although the first and second embodiments are suitable for application to a large span floor, particularly a floor having a short side dimension of 6 m or more, the third embodiment has a cantilever structure of the second embodiment. This is applied to the slab 1, and it is possible to sufficiently suppress the vibration even when the protruding length, in which the vibration easily occurs, is 2 m or more.
【００１３】図４は図２に示した第２実施形態の制振床
を例にとって本発明の制振床の振動減衰作用についてよ
り詳細に説明するものである。（ａ）はこの制振床が振
動して下方に撓んだ状態を示している。この場合、スラ
ブ１と仕上床２との間に挟み込まれている粘弾性体３は
（ｂ）に示すように剪断力Ｐを受けて一方向に変形し、
制振床が上方に撓んだときには粘弾性体３は逆方向に変
形する。（ｃ）は上記のような振動により粘弾性体３が
両方向に繰り返し受ける剪断力Ｐと変位量δとの関係を
示す履歴特性であり、図中の閉鎖曲線内の面積に相当す
るエネルギーが吸収されることになる。FIG. 4 illustrates the vibration damping action of the vibration damping floor of the present invention in more detail, taking the vibration damping floor of the second embodiment shown in FIG. 2 as an example. (A) has shown the state which this damping floor vibrated and bent below. In this case, the viscoelastic body 3 sandwiched between the slab 1 and the finishing floor 2 is deformed in one direction by receiving the shearing force P as shown in FIG.
When the vibration damping floor flexes upward, the viscoelastic body 3 is deformed in the opposite direction. (C) is a hysteresis characteristic indicating the relationship between the shearing force P and the displacement δ that the viscoelastic body 3 repeatedly receives in both directions due to the above-described vibration, and energy corresponding to the area within the closed curve in the figure is absorbed. Will be done.
【００１４】以上のように、上記各実施形態の制振床
は、スラブ１と仕上床２との間に粘弾性体３を挟み込む
という簡便な構成で十分な振動抑制効果が得られるもの
であり、歩行や車両通行等の内部の振動源による振動に
対してはもとより、交通振動等の外部の振動源による振
動や地震時における振動にも効果的であり、振動に対す
る建物性能や居住性を向上させることができる。As described above, the vibration-damping floor of each of the above-described embodiments has a simple structure in which the viscoelastic body 3 is interposed between the slab 1 and the finishing floor 2, and provides a sufficient vibration-suppressing effect. It is effective not only for vibrations caused by internal vibration sources such as walking and vehicle traffic, but also for vibrations caused by external vibration sources such as traffic vibrations and vibrations during earthquakes, improving building performance and livability against vibrations. Can be done.
【００１５】そして、上記制振床は、粘弾性体３の種類
や厚さ、面積を調節することで所望の減衰性能が得られ
るように調節することが可能である。また、従来一般の
スラブ１に対して、粘弾性体３と仕上床２を合わせても
せいぜい数十ｍｍの厚さのものを積層するだけで良いの
で、室内空間を圧迫することはないし、既設建物に対し
て適用することも可能である。The damping floor can be adjusted so that desired damping performance can be obtained by adjusting the type, thickness and area of the viscoelastic body 3. In addition, the conventional slab 1 can be combined with the viscoelastic body 3 and the finishing floor 2 only by stacking a slab having a thickness of at most several tens of millimeters. It is also possible to apply to buildings.
【００１６】また、その施工に際しては何等特殊な素材
や工具を必要としないので施工を容易に行い得るし、大
きなコスト増にもならない。しかも、粘弾性体３の耐久
性や耐候性は問題とならないし、クリープ変形が問題と
なることもないので基本的に保守は不要であり、万一火
災や大地震により残留変形が生じた際には、スラブ１が
健全であれば仕上床２と粘弾性体３を撤去して再施工す
ることで容易に復旧することができる。Further, since no special materials or tools are required for the construction, the construction can be performed easily and the cost does not increase significantly. In addition, the durability and weather resistance of the viscoelastic body 3 do not matter, and the creep deformation does not matter, so that maintenance is basically unnecessary. If the slab 1 is healthy, the slab 1 can be easily restored by removing the finishing floor 2 and the viscoelastic body 3 and reconstructing.
【００１７】なお、本発明は上記実施形態に限定される
ことなくさらに種々の変形や応用が可能である。たとえ
ば、仕上床２はモルタルにより形成することに限るもの
ではなく、振動時に粘弾性体３に対して変形を与えうる
ものである限りにおいてＰＣ版等の他の板体の採用も可
能である。また、最終的な床の仕上をタイル貼りや石貼
りとする場合には上記の仕上床２をその下地として利用
すれば良い。換言すれば、タイル貼りや石貼りの床の下
地としてのモルタル層を上記の仕上床２として利用して
制振床を構成することができる。The present invention is not limited to the above-described embodiment, but can be variously modified and applied. For example, the finishing floor 2 is not limited to being formed of mortar, and other plate bodies such as a PC plate can be adopted as long as it can deform the viscoelastic body 3 during vibration. When the final floor finish is tiled or stoned, the above-mentioned finished floor 2 may be used as its base. In other words, a damping floor can be configured by using a mortar layer as a base of a tiled or stoned floor as the finishing floor 2 described above.
【００１８】また、上記各実施形態はスラブ１の上面に
設けた仕上床２との間に粘弾性体３を設けたが、その天
地を逆にした形態、つまり、スラブ１の下面側に上記仕
上床２と同様の板体を設けてそれらの間に粘弾性体３を
挟み込むことでも同様の効果が得られる。その場合、ス
ラブ１下面に設ける板体としては上記仕上床２と同様に
モルタルからなるものでのでも良いし、あるいはたとえ
ばＰＣ版や鋼板等の他の板体も採用可能であり、スラブ
１下面を直仕上する場合にはその板体を仕上天井を兼ね
るものとすることができる。ただし、いずれにしてもス
ラブ１からの脱落や剥離に対する対策は必要となる。Further, in each of the above embodiments, the viscoelastic body 3 is provided between the slab 1 and the finishing floor 2 provided on the upper surface of the slab 1. The same effect can be obtained by providing the same plate body as the finishing floor 2 and sandwiching the viscoelastic body 3 between them. In this case, the plate provided on the lower surface of the slab 1 may be made of mortar similarly to the finishing floor 2, or another plate such as a PC plate or a steel plate may be employed. In the case of finishing directly, the plate can also serve as a finishing ceiling. However, in any case, it is necessary to take measures against falling off or separation from the slab 1.
【００１９】[0019]
【発明の効果】以上のように、本発明の制振床は、建物
の床を構成するコンクリート造のスラブの上面側もしく
は下面側に、該スラブに対して面内方向に相対変形可能
な状態で板体を全面的に積層するとともに、それらスラ
ブと板体との間に粘弾性体を接着状態で挟み込んでなる
ものであるから、簡便な構成でありながらこの制振床自
体が粘弾性ダンパーとして機能して優れた振動抑制効果
が得られ、したがって軽量かつ大スパンの床であっても
その振動を十分に抑制することができ、建物性能や居住
性を改善することができる。そして、スラブ上に打設し
たモルタルからなる仕上床を板体として採用すればそれ
自体を床仕上材ないし床下地材として利用できるから合
理的である。また、スラブと板体との間に粘弾性体を部
分的に挟み込む場合においては、粘弾性体のない部分に
スラブと板体とを非付着状態に維持するための縁切り材
を介装することで振動抑制効果を損なうことがない。As described above, the vibration-damping floor of the present invention can be placed on the upper surface or the lower surface of a concrete slab constituting the floor of a building so that it can be deformed relative to the slab in the in-plane direction. Since the slab and the slab are sandwiched between the slabs and the slab in a bonded state, the damping floor itself has a simple structure, while the slab and the slab are sandwiched. As a result, an excellent vibration suppressing effect can be obtained, and therefore, even if the floor is lightweight and has a large span, the vibration can be sufficiently suppressed, and the performance and livability of the building can be improved. If a finished floor made of mortar cast on a slab is adopted as a plate, it can be used as a floor finishing material or a floor base material, which is reasonable. Further, when the viscoelastic body is partially sandwiched between the slab and the plate body, an edge-cutting material for maintaining the slab and the plate body in a non-adhered state in a portion having no viscoelastic body may be interposed. Therefore, the effect of suppressing vibration is not impaired.
【図１】 本発明の第１実施形態を示す図である。FIG. 1 is a diagram showing a first embodiment of the present invention.
【図２】 本発明の第２実施形態を示す図である。FIG. 2 is a diagram showing a second embodiment of the present invention.
【図３】 本発明の第３実施形態を示す図である。FIG. 3 is a diagram showing a third embodiment of the present invention.
【図４】 本発明の振動減衰作用を説明するための図で
ある。FIG. 4 is a diagram for explaining a vibration damping effect of the present invention.
１ スラブ ２ 仕上床（板体） ３ 粘弾性体 ４ 縁切り材 DESCRIPTION OF SYMBOLS 1 Slab 2 Finishing floor (plate body) 3 Viscoelastic body 4 Edge cutting material
Claims (3)
ラブの上面側もしくは下面側に、該スラブに対して面内
方向に相対変形可能な状態で板体を全面的に積層すると
ともに、それらスラブと板体との間に粘弾性体を接着状
態で挟み込んでなることを特徴とする制振床。1. A plate body is entirely laminated on an upper surface or a lower surface of a concrete slab constituting a floor of a building so as to be relatively deformable in an in-plane direction with respect to the slab. A viscoelastic body is sandwiched between a plate and a plate body in an adhesive state.
ルタルからなる仕上床であることを特徴とする請求項１
記載の制振床。2. The slab according to claim 1, wherein said plate is a finishing floor made of mortar cast on said slab.
The described vibration control floor.
性体を部分的に挟み込み、該粘弾性体のない部分におけ
る前記スラブと前記板体との間にそれらを非付着状態に
維持する縁切り材を介装してなることを特徴とする請求
項１または２記載の制振床。3. The viscoelastic body is partially sandwiched between the slab and the plate body, and is maintained in a non-adhered state between the slab and the plate body in a portion where the viscoelastic body is not provided. The vibration damping floor according to claim 1 or 2, wherein a trimming material is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24418898A JP3713653B2 (en) | 1998-08-28 | 1998-08-28 | Vibration control floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24418898A JP3713653B2 (en) | 1998-08-28 | 1998-08-28 | Vibration control floor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000073482A true JP2000073482A (en) | 2000-03-07 |
| JP3713653B2 JP3713653B2 (en) | 2005-11-09 |
Family
ID=17115089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24418898A Expired - Fee Related JP3713653B2 (en) | 1998-08-28 | 1998-08-28 | Vibration control floor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3713653B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070200A (en) * | 2000-08-30 | 2002-03-08 | Toyo Constr Co Ltd | Vibration control structure for building and construction method therefor |
| JP2008095334A (en) * | 2006-10-10 | 2008-04-24 | Takenaka Komuten Co Ltd | Composite floor slab with vibration control function |
| EP2295304A1 (en) * | 2009-09-11 | 2011-03-16 | ALSTOM Transport SA | Floor board with improved acoustics |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6193811B2 (en) * | 2013-06-14 | 2017-09-06 | 積水ハウス株式会社 | Sound insulation floor structure |
-
1998
- 1998-08-28 JP JP24418898A patent/JP3713653B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070200A (en) * | 2000-08-30 | 2002-03-08 | Toyo Constr Co Ltd | Vibration control structure for building and construction method therefor |
| JP2008095334A (en) * | 2006-10-10 | 2008-04-24 | Takenaka Komuten Co Ltd | Composite floor slab with vibration control function |
| EP2295304A1 (en) * | 2009-09-11 | 2011-03-16 | ALSTOM Transport SA | Floor board with improved acoustics |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3713653B2 (en) | 2005-11-09 |
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