JP2011038277A

JP2011038277A - Vibration control floor structure

Info

Publication number: JP2011038277A
Application number: JP2009185286A
Authority: JP
Inventors: Shinichi Hamada; 伸一濱田; Masato Tsuchida; 真人土田; Tadaichi Shishido; 唯一宍戸; Keimei Ota; 啓明太田; Hiroshi Okiura; 博沖浦; Marie Ichikawa; 真梨恵市川
Original assignee: Sumitomo Metal Industries Ltd; Mitsui Home Co Ltd
Current assignee: Nippon Steel Corp; Mitsui Home Co Ltd
Priority date: 2009-08-07
Filing date: 2009-08-07
Publication date: 2011-02-24
Anticipated expiration: 2029-08-07
Also published as: JP5638778B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration control floor structure which enables rapid damping of vertical vibrations of a floor when the floor is supported using a long-span steel beam, and which is easily and inexpensively constructed in a structurally simplified manner. <P>SOLUTION: This vibration control floor structure includes a floor structure body 3 which is supported by a plurality of horizontal steel members 2 having flat plate-like flooring materials 1 disposed at spacings among them. The floor structure body 3 includes a vibration control device 4 which comprises a retainer member 5 and a damping material 6. The retainer member 5 includes a facing portion 51 which faces the horizontal steel member 2 on the downside of the horizontal steel member 2, and fixing portions 52 which are fixed to the flooring material 1 while being extended out upward on right and left sides from the facing portion 51, respectively. The damping material 6 is arranged between the facing portion 51 of the retainer member 5 and a lower end of the horizontal steel member 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、床の振動を早期に減衰する制振床構造に関する。 The present invention relates to a vibration-damping floor structure that attenuates floor vibration at an early stage .

近年、大きな店舗や集合住宅だけでなく、住宅用の建築物、すなわち、戸建住宅においても、開放感ある大きな空間のニーズがあり、例えば、広い居間（リビングダイニングやリビングダイニングキッチンを含む）を設けることが行われている。
この場合に、広い居間の上の階において、たとえば、床面を支持する横架材を、大きなスパンを有するものとする場合に、木材ではなく、Ｈ型鋼が用いられる機会が増えている。 In recent years, there is a need for a large space with a sense of openness not only in large stores and housing complexes, but also in residential buildings, that is, detached houses. For example, there is a large living room (including living dining and living dining kitchens). It is done.
In this case, in the upper floor of a large living room, for example, when the horizontal member that supports the floor surface has a large span, the opportunity to use H-shaped steel instead of wood is increasing.

大スパンの床梁を採用する床は、振動に関して減衰が悪くなる傾向があり、歩行時等の床振動が問題となる。
そこで、床振動を低減するために、構造計算による断面性能より大きな断面を有する床梁を用いたり、床梁の配設ピッチを細かくするなどの対策が講じられている。 Floors using large-span floor beams tend to have poor attenuation with respect to vibration, and floor vibration during walking is a problem.
Therefore, in order to reduce floor vibration, measures are taken such as using a floor beam having a cross section larger than the cross-sectional performance based on the structural calculation, or reducing the arrangement pitch of the floor beam.

さらに、床梁や床根太等の横架材として用いられるＨ形鋼に、床面上の歩行等により横架材が振動した場合に、当該振動の逆位相で振動して、横架材の振動を減衰させるダイナミックダンパを設けたものが提案されている（例えば、特許文献１参照）。ダイナミックダンパは、例えば、質量体と、当該質量体を横架材に弾性支持させる部材とから構成されるが、この例では、Ｈ形鋼のウェブを貫通して配置される質量体をその周囲に配置した弾性部材でＨ型鋼に支持させることで、ダイナミックダンパをＨ形鋼のフランジの幅内に収めている。
また、横架材に対して左右に突出させた状態にダイナミックダンパを設けたものも提案されている（例えば、特許文献２および特許文献３参照）。 Furthermore, when H-beams used as horizontal members such as floor beams and floor joists are vibrated due to walking on the floor, etc., they vibrate in the opposite phase of the vibration, The thing provided with the dynamic damper which attenuates a vibration is proposed (for example, refer patent document 1). The dynamic damper is composed of, for example, a mass body and a member that elastically supports the mass body on a horizontal member. In this example, the mass body is arranged around the H-shaped steel web. The dynamic damper is housed within the width of the flange of the H-shaped steel by supporting the H-shaped steel with the elastic member arranged in the above.
Moreover, what provided the dynamic damper in the state protruded right and left with respect to the horizontal member is proposed (for example, refer patent document 2 and patent document 3).

これらの従来例は、横架材に設けられたダイナミックダンパにより、床を支持する横架材に発生した振動を減衰させるようになっており、ダイナミックダンパは横架材に取り付けられており、振動の減衰に横架材以外の固定された固定部材（柱、梁、壁）等を必要としない。 In these conventional examples, the dynamic damper provided in the horizontal member attenuates the vibration generated in the horizontal member that supports the floor. The dynamic damper is attached to the horizontal member, and the vibration is It is not necessary to fix fixed members (columns, beams, walls) etc. other than horizontal members for damping.

それに対して、床を支持する梁の制振に柱や柱に接続された受け部材などの固定部材を必要とする床の制振構造も知られている。
例えば、梁の両端部側の下側から梁の中央部に向かって上り勾配となる角度で直状部材を設け、当該直状部材の基端部を固定部材に固定し、先端部を梁の中央部に粘弾性材を有する制振装置を介して接続したものが提案されている（例えば、特許文献４参照）。 On the other hand, there is also known a floor damping structure that requires a fixing member such as a pillar or a receiving member connected to the pillar for damping the beam supporting the floor.
For example, a straight member is provided at an angle that is upwardly inclined from the lower side of both ends of the beam toward the center of the beam, the proximal end of the straight member is fixed to the fixing member, and the distal end is fixed to the beam. The thing connected via the damping device which has a viscoelastic material in the center part is proposed (for example, refer patent document 4).

また、床構造体と、その下側の間仕切り壁等の非構造体（固定部材）との間に液封ダンパを配置し、制振装置としての液封ダンパにより振動を減衰するものが提案されている（例えば、特許文献５参照）。
これらの従来例は、振動する床構造上の点を可動点とし、固定部材上の点を固定点とした場合に、固定点と可動点との間に制振装置を配置して、可動点の振動を減衰するものである。 In addition, a liquid-sealed damper is arranged between the floor structure and a non-structure body (fixing member) such as a partition wall below the floor structure, and a liquid-damped damper as a vibration damping device is proposed to attenuate the vibration. (For example, see Patent Document 5).
In these conventional examples, when a point on the floor structure that vibrates is a movable point and a point on the fixed member is a fixed point, a vibration damping device is disposed between the fixed point and the movable point, This is to dampen vibrations.

なお、上述のような横架材にダイナミックダンパを設けるものや横架材と固定部材との間に制振装置を設けるものは、主に上下方向の振動を減衰するものである。
それに対して、主に横方向（水平方向）の振動を減衰させるものとして、床根太として用いられるＣ形鋼の下端部を床面を構成する床材に固定させる床構造が提案されている（例えば、非特許文献１および特許文献６参照）。Ｃ形鋼の下端部は、当該Ｃ形鋼の下端部と嵌合する凹溝部と、当該凹溝部から左右斜め上方にそれぞれ延出する傾斜板とを備えた支持部材に固定される。すなわち、支持部材の凹溝部とＣ型鋼の下側のフランジとがビス止めされるとともに、傾斜板の上端部が床面を構成する床材の下面側にビス止めされる。 In addition, what provided a dynamic damper in the horizontal member as mentioned above, and what provided the damping device between the horizontal member and the fixing member mainly attenuate | dampen a vibration of an up-down direction.
On the other hand, a floor structure has been proposed in which the lower end portion of the C-shaped steel used as the floor joist is fixed to the floor material constituting the floor surface, as the one that mainly attenuates the vibration in the horizontal direction (horizontal direction) ( For example, refer nonpatent literature 1 and patent literature 6.). The lower end portion of the C-shaped steel is fixed to a support member provided with a recessed groove portion that fits with the lower end portion of the C-shaped steel, and an inclined plate that extends obliquely upward and leftward and rightward from the recessed groove portion. That is, the recessed groove portion of the support member and the lower flange of the C-shaped steel are screwed, and the upper end portion of the inclined plate is screwed to the lower surface side of the floor material constituting the floor surface.

この床構造では、Ｃ形鋼の下端部の水平方向の振動を、床材に固定することで押えて、横方向の振動を制振するようになっている。すなわち、Ｃ形鋼の下端部が左右に大きく揺れる状態となることで、床の横方向の振動が大きくなったり、振動が長く続いてしまったりするのを、Ｃ形鋼の下端部を床材に固定することにより押えている。 In this floor structure, the horizontal vibration of the lower end portion of the C-shaped steel is suppressed by being fixed to the floor material, so that the vibration in the horizontal direction is suppressed. That is, when the lower end of the C-shaped steel is greatly swayed to the left and right, the lateral vibration of the floor increases or the vibration continues for a long time. It is pressed by fixing to.

特開２００８−２８５８４４号公報JP 2008-285844 A 特開２００４−３２８０号公報Japanese Patent Laid-Open No. 2004-3280 特開２００６−７０４９４号公報JP 2006-70494 A 特開２００２−７０２２８号公報JP 2002-70228 A 特開平１０−１６９０６７号公報JP-A-10-169067 特開平１１−３１０９７４号公報JP-A-11-310974

新日鉄技報第３６９号スチールハウス特集平川智久須田敬之村橋喜満「７．木材と薄板鋼板のハイブリット化による新住宅構法の開発−木とスチールのそれぞれの特徴を活かした混合構造化の提案−」新日本製鐵株式会社１９９８年１１月発行NS Nippon Steel Corporation, issued in November 1998

前記ダイナミックダンパは、他の部材に関係なく横架材だけに取り付けられる構造であることから、横架材上に比較的自由に配置可能であるが、質量体（錘）が必要であるとともに、質量体を支持する弾性部材が必要であり、床構造が煩雑になる虞があるとともに重くなる虞がある。また、ダイナミックダンパがコスト増の要因となる虞がある。また、ダイナミックダンパの構造によっては施工が煩雑になり、施工性の悪化の要因となる虞がある。また、質量体を支持する弾性部材には、床構造に対する静的荷重が入力されることがないが、ある程度大きな質量を必要とする質量体を常時支持していることから、弾性部材のクリープ現象を考慮する必要がある。 Since the dynamic damper is a structure that can be attached only to the horizontal member regardless of other members, it can be arranged relatively freely on the horizontal member, but requires a mass (weight), An elastic member that supports the mass body is necessary, and the floor structure may be complicated and heavy. In addition, the dynamic damper may cause an increase in cost. In addition, depending on the structure of the dynamic damper, the construction becomes complicated, which may cause deterioration in workability. In addition, a static load on the floor structure is not input to the elastic member that supports the mass body, but since the mass body that requires a certain amount of mass is always supported, the creep phenomenon of the elastic member Need to be considered.

また、固定部材と横架材との間に液封ダンパや粘弾性材からなる制振装置を介在させる制振構造では、固定部材との関係で取り付け場所が制約される虞がある。また、固定部材と横架材との位置関係によっては、固定部材と横架材との間に長尺な部材を介して制振装置を配置する必要が生じる場合があり、この場合に長尺な部材によって制振構造のサイズが大きなものとなってしまう虞があるとともに、制振構造の施工に手間がかかる虞がある。 In addition, in a vibration damping structure in which a vibration damping device made of a liquid seal damper or a viscoelastic material is interposed between the fixing member and the horizontal member, there is a possibility that the mounting location may be restricted due to the relationship with the fixing member. In addition, depending on the positional relationship between the fixed member and the horizontal member, it may be necessary to place a vibration damping device between the fixed member and the horizontal member via a long member. There is a possibility that the size of the vibration damping structure may become large due to such a member, and the construction of the vibration damping structure may be troublesome.

また、固定部材と横架材との間に配置される制振装置に常時静的荷重の一部が入力された状態となり、制振装置として弾性部材を用いた場合に、クリープ現象に対する配慮が必要となる。 In addition, when a part of static load is always input to the vibration damping device arranged between the fixed member and the horizontal member, and the elastic member is used as the vibration damping device, the creep phenomenon is considered. Necessary.

また、床根太としてのＣ型鋼の下端部の左右への振動を押える支持部材を用いたものは、基本的に板状の床材と、横架材とを接合する構造となっているので、比較的自由に取り付け場所を選択することができるが、Ｃ形鋼製床根太において顕著に発生する当該Ｃ形鋼製床根太下端部の横方向の振動を抑制する構造であり、上下方向の振動に対しては効果が望めない。 In addition, the one using the support member that suppresses the vibration to the left and right of the lower end of the C-shaped steel as the floor joist has a structure that basically joins the plate-like flooring and the horizontal member, Although the mounting location can be selected relatively freely, it is a structure that suppresses the lateral vibration of the lower end of the C-shaped steel floor joist that occurs prominently in the C-shaped steel floor joist, and the vertical vibration I cannot expect the effect.

本発明は、このような事情に鑑みてなされたもので、例えば、戸建住宅のような建物の２階以上の階で比較的大きなスパンの鋼製梁（鋼製根太）を用いて床を支持する場合に好適に用いられ、大スパンの床の上下方向の振動の早期の減衰を可能とし、簡単な構造で低コストかつ容易に施工可能な制振床構造を提供することを目的とする。 The present invention has been made in view of such circumstances. For example, the floor is formed using steel beams (steel joists) having a relatively large span on two or more floors of a building such as a detached house. An object of the present invention is to provide a vibration-damping floor structure that is suitably used for supporting, enables early damping of vertical vibration of a large-span floor, and can be easily constructed at low cost with a simple structure. .

前記課題を解決するために、請求項１に記載の制振床構造は、平板状の床材が互いに間隔をあけて配列された複数の鋼製横架材により支持された床構造本体の上下方向の振動を減衰させる制振床構造であって、
前記鋼製横架材の下側に、前記床構造本体の当該鋼製横架材以外の部分に支持された受け部材が設けられ、
当該受け部材と当該鋼製横架材との間に減衰材が設けられていることを特徴とする。 In order to solve the above-described problem, the vibration-damping floor structure according to claim 1 is configured so that the floor structure main body is supported by a plurality of horizontal steel members in which flat floor materials are arranged at intervals. A damping floor structure that attenuates vibration in the direction,
Under the steel horizontal member, a receiving member supported by a portion other than the steel horizontal member of the floor structure body is provided,
A damping material is provided between the receiving member and the steel horizontal member.

請求項１に記載の発明においては、平板状の床材を支持する複数の梁、根太等の鋼製横架材と、これら床材と鋼製横架材からなる床構造本体の当該鋼製横架材以外の部分に支持された受け部材との間に減衰材が配置されていることにより、床構造本体の上下振動が発生した場合にこれを速やかに減衰することができる。 In the first aspect of the present invention, a steel horizontal member made of a plurality of beams and joists for supporting a flat floor material, and a floor structure body made of the floor material and the horizontal steel member are made of the steel. Since the damping material is arranged between the receiving member supported by the portion other than the horizontal member, it can be quickly damped when the vertical vibration of the floor structure body occurs.

ここで、受け部材は、床構造本体に支持されているので、受け部材も床構造本体と一緒に上下振動することになる。すなわち、本発明は、床構造の可動点どうしの間に粘弾性材料からなる減衰材を配置した構造となるが、上下振動に際して床構造全体が一体に上下に移動しているわけではなく、床構造本体で波が伝播するように振動している。したがって、床構造本体の位置によって振動の位相が異なる。また、床構造本体は、板状の床材と、長尺な鋼製横架材からなり、床材と鋼製横架材でも振動の波形等が異なる可能性がある。 Here, since the receiving member is supported by the floor structure main body, the receiving member also vibrates up and down together with the floor structure main body. That is, the present invention has a structure in which a damping material made of a viscoelastic material is disposed between movable points of the floor structure, but the entire floor structure is not moved up and down integrally during vertical vibration, It vibrates so that waves propagate through the structure body. Therefore, the phase of vibration varies depending on the position of the floor structure main body. Further, the floor structure main body is composed of a plate-like floor material and a long steel horizontal member, and the vibration waveform and the like may be different between the floor material and the steel horizontal member.

したがって、受け部材と、当該受け部材との間に減衰材を配置して配置される鋼製横架材とで、位相差等により変位の仕方が異なった状態となる可能性が極めて高く、受け部材と鋼製横架材とで異なる変位（方向や速度等が異なる移動）をした状態で、その間に減衰材があることになり、受け部材と鋼製横架材の上下動が減衰されることになる。 Therefore, it is highly likely that the receiving member and the steel horizontal member disposed with the damping member disposed between the receiving member and the horizontal member are in different states due to the phase difference or the like. In a state where the member and the steel horizontal member have different displacements (movements with different directions and speeds, etc.), there will be a damping material between them, and the vertical movement of the receiving member and the steel horizontal member will be attenuated. It will be.

また、受け部材は、床材と鋼製横架材からなる床構造本体に支持されればいいことから、基本的に床構造本体の鋼製横架材がある位置ならば、どこでも配置可能となる。また、受け部材に減衰材を介して配置される鋼製横架材の周囲は、全て床構造本体となるので、受け部材を遠く離れた位置に支持させる必要はなく、コンパクトで簡便な構造とすることができる。これによって、制振床構造の施工性を高めるとともにコストの低減を図ることができる。なお、本発明は、振動する床構造上の異なる可動点の間に粘弾性部材としての減衰材を配置した構造であり、従来の質量体と可動点との間に弾性部材を配置した構造や、可動点と固定点との間に粘弾性部材等を配置した構造や、可動点どうしを互いに固定した構造とは異なるものである。 In addition, since the receiving member only needs to be supported by the floor structure main body composed of the floor material and the steel horizontal member, it can be placed anywhere where the steel horizontal member of the floor structure main body is located. Become. In addition, since the entire circumference of the steel horizontal member arranged on the receiving member via the damping material becomes the floor structure main body, it is not necessary to support the receiving member at a far away position, and the structure is compact and simple. can do. As a result, the workability of the vibration-damping floor structure can be improved and the cost can be reduced. The present invention is a structure in which a damping material as a viscoelastic member is disposed between different movable points on a vibrating floor structure, and a structure in which an elastic member is disposed between a conventional mass body and a movable point. This is different from a structure in which a viscoelastic member or the like is disposed between a movable point and a fixed point, or a structure in which movable points are fixed to each other.

また、静的荷重は、制振床構造全体に作用することになり、鋼製横架材と受け部材との両方に対して略同様に変位するように作用するので、鋼製横架材と受け部材との間の減衰材に静的荷重が入力され難く、粘弾性材料からなる減衰材にクリープ現象が生じることがなく、減衰材の長寿命化を図ることができる。また、クリープ現象に対する対策を必要としないことでコストの低減を図ることができる。 In addition, the static load acts on the entire vibration-damping floor structure and acts so as to be displaced in the same manner with respect to both the steel horizontal member and the receiving member. It is difficult for a static load to be input to the damping material between the receiving member and a creep phenomenon does not occur in the damping material made of a viscoelastic material, so that the life of the damping material can be extended. Further, the cost can be reduced by not requiring a countermeasure against the creep phenomenon.

なお、当該鋼製横架材以外の部分とは、受け部材との間に減衰材を介して配置される鋼製横架材とは別の鋼製横架材もしくは床材を指すものである。すなわち、床構造本体の一部となる１つの鋼製横架材に減衰材を介して対向している受け部材が、この１つの鋼製横架材に支持されるものではなく、他の鋼製横架材もしくは床材に支持されることになる。
また、受け部材および減衰材は、複数箇所に配置されるものであり、例えば、各鋼製横架材にそれぞれ配置されることが好ましく、各鋼製横架材毎に複数配置されることが好ましい。 The portion other than the steel horizontal member refers to a steel horizontal member or flooring material different from the steel horizontal member arranged via the damping member between the receiving member and the steel member. . That is, the receiving member that is opposed to one steel horizontal member that is a part of the floor structure main body via the damping material is not supported by this one steel horizontal member, but other steel It will be supported by a horizontal frame or flooring.
Further, the receiving member and the damping material are arranged at a plurality of places, for example, preferably arranged on each steel horizontal member, and may be arranged on each steel horizontal member. preferable.

請求項２に記載の制振床構造は、請求項１に記載の発明において、前記受け部材は、前記鋼製横架材の下側で当該鋼製横架材に対向する対向部と、当該対向部から左右上方にそれぞれ延出して、前記床材に固定される固定部とを備え、当該受け部材の前記対向部と前記鋼製横架材の下端との間に前記減衰材が配置されていることを特徴とする。 The vibration-damping floor structure according to claim 2 is the invention according to claim 1, wherein the receiving member includes a facing portion that faces the steel horizontal member below the steel horizontal member, and A fixed portion that extends to the left and right from the facing portion and is fixed to the floor material, and the damping material is disposed between the facing portion of the receiving member and the lower end of the steel horizontal member. It is characterized by.

請求項２に記載の発明においては、受け部材が床材に接続される構成なので、いずれの鋼製横架材のどの位置にも容易に取り付けることができる。また、極めて簡単な構造であり、例えば、ビス等で受け部材を床材に取り付ければいいので、容易に施工することができる。また、多数の受け部材を配置するものとしても、各受け部材を安価にすることで、低いコストで設置することができる。 In the invention according to claim 2, since the receiving member is connected to the floor material, it can be easily attached to any position of any steel horizontal member. Moreover, since it is an extremely simple structure, for example, the receiving member may be attached to the floor with screws or the like, it can be easily constructed. Moreover, even if it arranges many receiving members, it can install at low cost by making each receiving member cheap.

この場合も、受け部材が支持される床材の部分と、受け部材と減衰材を介して対向する鋼製横架材との部分で、振動の位相等が異なることで、受け部材と、当該受け部材に減衰材を介して対向する横架材とで上下方向の変位が異なることにより、これらの動き（振動）が減衰材により減衰される。 Also in this case, the phase of the vibration is different between the portion of the floor material on which the receiving member is supported and the steel horizontal member facing the receiving member through the damping material, so that the receiving member, These movements (vibrations) are attenuated by the damping material because the vertical displacement differs between the horizontal member facing the receiving member via the damping material.

請求項３に記載の制振床構造は、請求項１に記載の発明において、前記床構造本体の前記鋼製横架材のうちの間に他の鋼製横架材を挟んで離れた位置にある２つの鋼製横架材の下端部どうしの間に前記受け部材が架け渡された状態に設けられ、２つの前記鋼製横架材の間にある前記鋼製横架材の下端と前記受け部材との間に前記減衰材が配置されていることを特徴とする。 The vibration-damping floor structure according to claim 3 is the position of the invention according to claim 1, wherein the floor structure main body is separated by sandwiching another steel horizontal member between the steel horizontal members. And the lower end of the steel horizontal member between the two steel horizontal members, the receiving member is provided between the lower ends of the two horizontal steel members The damping material is disposed between the receiving member and the receiving member.

請求項３に記載の発明においては、受け部材が、当該受け部材に減衰材介して対向する鋼製横架材の左右にある別の鋼製横架材に架け渡されて支持された状態となっているので、受け部材を例えば、棒状や板状等の直状の部材とすることができ、受け部材が長い部材となる可能性があるが、簡単な構造とすることができる。したがって、容易に施工可能で、かつ、コストの低減を図ることができる。 In the invention according to claim 3, the receiving member is supported by being stretched over and supported by different steel horizontal members on the left and right sides of the steel horizontal member facing the receiving member through the damping material. Therefore, the receiving member can be a straight member such as a rod or a plate, and the receiving member may be a long member, but a simple structure can be obtained. Therefore, it can be easily constructed and the cost can be reduced.

また、間に２本以上の鋼製横架材を挟んで、互いに離れて配置された鋼製横架材どうしの間に架け渡された受け部材に、減衰材を介在させて、上述の間に挟まれた２本以上の鋼製横架材を対向して配置することができるので、多数の鋼製横架材に減衰材を介在させて受け部材に対向させる際に、施工を容易なものとすることができる。
また、この場合も、鋼製横架材によって、位相差等により振動による上下の変位が異なるものとなり、受け部材と、減衰材を介在させて当該受け部材と対向する鋼製横架材とで異なる上下方向の変位が生じることで、床構造本体の振動を減衰することができる。 In addition, a damping member is interposed between the steel horizontal members arranged apart from each other with two or more steel horizontal members in between, so that the above-mentioned Since two or more steel horizontal members sandwiched between the two can be arranged to face each other, when a damping material is interposed in many steel horizontal members to face the receiving member, construction is easy. Can be.
Also in this case, the vertical displacement due to vibration differs depending on the steel horizontal member due to the phase difference or the like, and the receiving member and the steel horizontal member facing the receiving member with the damping material interposed therebetween. Due to the occurrence of different vertical displacements, the vibration of the floor structure main body can be attenuated.

請求項４に記載の制振床構造は、請求項３に記載の発明において、前記鋼製横架材がＨ形鋼からなり、前記受け部材が前記Ｈ形鋼のフランジに接続されていることを特徴とする。 Damping floor structure according to claim 4 is the invention according to claim 3, wherein the steel horizontal members is made of H-shaped steel, said receiving member is connected to the flange of the H-shaped steel It is characterized by.

請求項４に記載の発明においては、鋼製横架材としてＨ形鋼を用い、フランジに受け部材を支持させることで、制振床構造の施工性を向上することができる。 In invention of Claim 4, the workability | operativity of a damping floor structure can be improved by using a H-shaped steel as a steel horizontal member and making a flange support a receiving member.

本発明の制振床構造によれば、鋼製梁等の鋼製横架材を用いて大きなスパンで床を支持する構造とした場合に、床の上下振動が早期に減衰し難い状態となるのを防止し、床の上下振動を速やかに減衰させることができる。また、このような制振床構造を低コストで容易に施工することを可能とする。 According to the vibration-damping floor structure of the present invention, when the floor is supported with a large span using a steel horizontal member such as a steel beam, the vertical vibration of the floor is hardly attenuated at an early stage. It is possible to quickly attenuate the vertical vibration of the floor. Moreover, it is possible to easily construct such a damping floor structure at a low cost.

本発明の第１実施形態の制振床構造を示す要部概略図である。It is a principal part schematic diagram which shows the damping floor structure of 1st Embodiment of this invention. 本発明の第２実施形態の制振床構造を示す要部概略図である。It is a principal part schematic diagram which shows the damping floor structure of 2nd Embodiment of this invention. 本発明の第３実施形態の制振床構造を示す要部概略図である。It is a principal part schematic diagram which shows the damping floor structure of 3rd Embodiment of this invention. 本発明の第４実施形態の制振床構造を示す要部概略図である。It is a principal part schematic diagram which shows the damping floor structure of 4th Embodiment of this invention. 本発明の比較例となる床構造を示す（ａ）概略平面図、（ｂ）概略断面図、（ｃ）概略側面図である。It is (a) schematic plan view, (b) schematic sectional drawing, and (c) schematic side view which show the floor structure used as the comparative example of this invention. 前記比較例となる床構造における上下振動の測定位置の違いによる変位の違いを説明するためのグラフである。It is a graph for demonstrating the difference of the displacement by the difference in the measurement position of the vertical vibration in the floor structure used as the comparative example. 本発明の実施例となる制振床構造を示す（ａ）概略平面図、（ｂ）概略断面図、（ｃ）概略側面図である。It is (a) schematic plan view, (b) schematic sectional drawing, and (c) schematic side view which show the damping floor structure used as the Example of this invention. 本発明の別の比較例となる床構造を示す（ａ）概略平面図、（ｂ）概略断面図、（ｃ）概略側面図である。It is (a) schematic plan view, (b) schematic sectional drawing, and (c) schematic side view which show the floor structure used as another comparative example of this invention. 前記実施例となる制振床構造における上下振動の減衰を示すグラフである。It is a graph which shows attenuation | damping of the vertical vibration in the damping floor structure used as the said Example. 前記比較例となる床構造における上下振動の減衰を示すグラフである。It is a graph which shows attenuation | damping of the vertical vibration in the floor structure used as the said comparative example. 別の比較例となる床構造における上下振動の減衰を示すグラフである。It is a graph which shows attenuation | damping of the vertical vibration in the floor structure used as another comparative example.

以下、本発明の実施形態を図面に基づいて説明する。
図１は、本発明の第１実施形態の制振床構造を示す要部概略図である。
この第１実施形態の制振床構造は、平板状の床材１が互いに間隔をあけて配列された複数の鋼製横架材２により支持された床構造本体３の上下方向の振動を抑制するものである。平板状の床材１は、例えば、構造用合板であり、鋼製横架材２は、例えば、Ｈ形鋼である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a main part schematic diagram showing the vibration-damping floor structure of the first embodiment of the present invention.
The vibration-damping floor structure of the first embodiment suppresses vertical vibration of the floor structure main body 3 supported by a plurality of horizontal steel members 2 in which flat floor materials 1 are arranged at intervals. To do. The flat flooring 1 is, for example, a structural plywood, and the steel horizontal member 2 is, for example, an H-shaped steel.

鋼製横架材２は、住宅の２階、３階等の上階の床を支持する床根太もしくは床梁となるものであり、その両端部が柱もしくは梁等の構造体に支持されている。
各鋼製横架材２は、互いに平行に等間隔で配置されるとともに、同じ高さ位置に配置され、その上側に板状の床材１が配置され、この床材１を支持している。
床材１は、床の下地材となるもので、床材１の上面側に床面を構成する部材が貼り付けられる。 The steel horizontal member 2 is a floor joist or floor beam that supports the upper floor of the second floor, third floor, etc. of the house, and both ends thereof are supported by structures such as columns or beams. Yes.
The steel horizontal members 2 are arranged in parallel with each other at equal intervals, are arranged at the same height position, a plate-like flooring 1 is arranged on the upper side, and supports the flooring 1. .
The floor material 1 is a floor base material, and a member constituting the floor surface is attached to the upper surface side of the floor material 1.

また、この床構造本体３は、その下の階が例えば大きな面積の居間となっており、鋼製横架材２は住宅の床を支持する横架材としては大きなスパンを有するものとなっている。
この例の制振床構造では、上述のような床構造本体３に以下のような制振装置４を取り付けるものとなっている。
制振装置４は、概略Ｖ字状の金物である受け部材５と、この受け部材５と鋼製横架材２との間に配置される減衰材６とからなる。 In addition, the floor structure main body 3 has a living room with a large floor, for example, and the steel horizontal member 2 has a large span as a horizontal member that supports the floor of the house. Yes.
In the damping floor structure of this example, the following damping device 4 is attached to the floor structure body 3 as described above.
The vibration damping device 4 includes a receiving member 5 that is a substantially V-shaped metal piece and a damping member 6 disposed between the receiving member 5 and the steel horizontal member 2.

受け部材５は、鋼製横架材２の下側で、鋼製横架材２の下端（下面）に対向する対向部５１と、この対向部５１の左右から上方に延出し、鋼製横架材２の上に配置された板状の床材１に固定される固定部５２とを備える。なお、ここでの左右方向は、鋼製横架材２の長手方向と直交する方向である。 The receiving member 5 is located on the lower side of the steel horizontal member 2, facing the lower end (lower surface) of the steel horizontal member 2, and extends upward from the left and right of the opposite portion 51, And a fixing portion 52 that is fixed to the plate-like flooring 1 disposed on the base material 2. The left-right direction here is a direction orthogonal to the longitudinal direction of the steel horizontal member 2.

また、受け部材５は、例えば、帯状の金属の板体を曲げ加工した金物であり、対向部５１およびその左右の固定部５２が一体に形成されている。対向部５１は、Ｈ形鋼である鋼製横架材２のフランジ２１の左右幅より僅かに広い左右幅を有するものとなっており、フランジ２１と略平行に配置される。なお、鋼製横架材２は、Ｈ形鋼として、上下のフランジ２１とこれらフランジ２１を繋ぐウェブ２２とを備える。 The receiving member 5 is, for example, a hardware obtained by bending a belt-shaped metal plate, and the opposing portion 51 and the left and right fixing portions 52 are integrally formed. The facing portion 51 has a width that is slightly wider than the left and right width of the flange 21 of the steel horizontal member 2 that is H-shaped steel, and is disposed substantially parallel to the flange 21. The steel horizontal member 2 is provided with an upper and lower flange 21 and a web 22 connecting these flanges 21 as H-shaped steel.

左右の固定部５２は、対向部５１の左右の端部からそれぞれ上に向うにつれて互いに広がるように斜め上方に延出して形成されている。固定部５２の上端部には、床材１の下面に沿うよう屈曲された取付部５３が設けられ、この取付部５３が床材１にビス止めされて固定されている。 The left and right fixing portions 52 are formed to extend obliquely upward so as to spread from the left and right end portions of the facing portion 51 upward. An attachment portion 53 that is bent along the lower surface of the flooring 1 is provided at the upper end portion of the fixing portion 52, and the attachment portion 53 is fixed to the flooring 1 with screws.

また、取付部５３は、対向部５１に対向する鋼製横架材２と、この鋼製横架材２の隣となる鋼製横架材２との間となる床材１の下面部分に配置される。
そして、対向部５１と鋼製横架材２の下端部となる下側のフランジ２１との間には、減衰材６が配置されている。粘弾性材料からなる周知の粘弾性減衰材であり、この例では肉厚の板状に形成され、フランジ２１と対向部５１との間に挟持された状態となっている。 Further, the attachment portion 53 is provided on the lower surface portion of the flooring 1 between the steel horizontal member 2 facing the opposing portion 51 and the steel horizontal member 2 adjacent to the steel horizontal member 2. Be placed.
And the damping material 6 is arrange | positioned between the opposing part 51 and the lower flange 21 used as the lower end part of the steel horizontal member 2. FIG. It is a known viscoelastic damping material made of a viscoelastic material. In this example, it is formed into a thick plate shape and is sandwiched between the flange 21 and the facing portion 51.

なお、フランジ２１と減衰材６とが面接触するとともに、対向部５１と減衰材６とが面接触した状態となっているが、減衰材６はほとんど圧縮変形していない状態となっている。
制振装置４は、例えば、各鋼製横架材２に対応して備えられるとともに、各鋼製横架材２毎に対応して当該鋼製横架材２の軸方向に並ぶとともに、互いに間隔をあけて複数備えられていることが好ましい。なお、一部制振装置４が備えられていない鋼製横架材２が有ってもよいし、鋼製横架材２によって備えられる制振装置４の数が異なっていてもよい。 In addition, while the flange 21 and the damping material 6 are in surface contact, and the facing portion 51 and the damping material 6 are in surface contact, the damping material 6 is hardly compressed and deformed.
The vibration damping device 4 is provided corresponding to each steel horizontal member 2, for example, and arranged in the axial direction of the steel horizontal member 2 corresponding to each steel horizontal member 2, and It is preferable that a plurality are provided at intervals. A part vibration damping device 4 may be there is steel horizontal members 2 that is not provided may be different number of damping devices 4 provided by the steel horizontal member 2.

このような制振装置４を備えた制振床構造によれば、床構造本体３が歩行等の衝撃により上下振動した場合に、各鋼製横架材２および床材１がともに振動することになるが、場所により振動に位相差が生じるとともに、鋼製横架材２と床材１とでも振動時の上下の変位に異なる部分が生じる可能性がある。ここで、鋼製横架材２の対向部５１と対向する位置と、当該鋼製横架材２の下面に対向する対向部５１を備えた受け部材５の取付部５３が固定される床材１の位置とが異なることにより、振動発生時に、鋼製横架材２の対向部５１と対向する位置と、対向部５１とで上下方向の変位が異なる状態となる。 According to the vibration control floor structure provided with such a vibration control device 4, when the floor structure main body 3 vibrates up and down due to an impact such as walking, the steel horizontal members 2 and the floor material 1 vibrate together. However, there is a possibility that a phase difference occurs in the vibration depending on the location, and that the steel horizontal member 2 and the floor material 1 have different portions in the vertical displacement during vibration. Here, the floor material to which the mounting portion 53 of the receiving member 5 provided with the position facing the facing portion 51 of the steel horizontal member 2 and the facing portion 51 facing the lower surface of the steel horizontal material 2 is fixed. When the position 1 is different, the vertical displacement is different between the position facing the facing portion 51 of the steel horizontal member 2 and the facing portion 51 when vibration is generated.

したがって、鋼製横架材２の上下方向の変位と、対向部５１の上下方向の変位との違いによっては、鋼製横架材２と対向部５１とが相対的に上下方向変位し、鋼製横架材２のフランジ２１と、受け部材５の対向部５１とが近づくように変位したり、離れるように変位したりすることになる。そして、フランジ２１と対向部５１とが近づくように変位すると、フランジ２１と対向部５１との間に粘弾性体からなる減衰材６が挟まれていることにより、フランジ２１と対向部５１との変位を減衰することが可能となる。 Therefore, depending on the difference between the vertical displacement of the steel horizontal member 2 and the vertical displacement of the opposing portion 51, the steel horizontal member 2 and the opposing portion 51 are relatively displaced in the vertical direction. The flange 21 of the horizontal member 2 and the facing portion 51 of the receiving member 5 are displaced so as to approach each other or displaced so as to be separated from each other. When the flange 21 and the facing portion 51 are displaced so as to approach each other, the damping material 6 made of a viscoelastic body is sandwiched between the flange 21 and the facing portion 51, so that the flange 21 and the facing portion 51 The displacement can be attenuated.

この制振装置４によれば、その受け部材５の取り付け位置が、床構造本体３の床材１であり、床構造本体３の鋼製横架材２を跨ぐ位置となっていれば良いので、基本的に床構造本体３の各鋼製横架材２の位置ならばどこにでも設置可能である。
また、制振装置４の設置は、基本的に受け部材５の取付部５３を床材１にビス止めするだけなので、施工も容易である。なお、減衰材６は、予め受け部材５の対向部５１に取り付けておけばよい。 According to the vibration damping device 4, the mounting position of the receiving member 5 is the floor material 1 of the floor structure main body 3, so long as it is a position straddling the steel horizontal member 2 of the floor structure main body 3. Basically, the floor structure body 3 can be installed anywhere as long as each steel horizontal member 2 is positioned.
Further, since the vibration damping device 4 is basically simply screwed to the flooring 1 at the mounting portion 53 of the receiving member 5, the construction is easy. The damping material 6 may be attached to the facing portion 51 of the receiving member 5 in advance.

また、制振装置４は、帯状の金属製（例えば鋼製）の板体を折り曲げ加工したものに板状の減衰材６を取り付けただけの簡単なもので、製造が容易でかつ簡単な構造となっていることからコストを低くすることが可能であり、制振装置４を多数取り付けるものとしても、コストの増加の抑制を図ることができる。
また、各制振装置４のサイズも鋼製横架材２の断面形状より僅かに大きな程度のものであり、各制振装置４は、床構造本体３に対して小さなものとなっており、運送、保管等を容易に行うことができる。 Further, the vibration damping device 4 is a simple structure in which a plate-like damping material 6 is attached to a bent metal plate (for example, steel), and is easy to manufacture and has a simple structure. Therefore, it is possible to reduce the cost, and even if a large number of vibration control devices 4 are attached, the increase in cost can be suppressed.
The size of each damping device 4 is also slightly larger than the cross-sectional shape of the steel horizontal member 2, and each damping device 4 is smaller than the floor structure body 3, Transportation, storage, etc. can be performed easily.

また、減衰材６は、上述のように床材１に支持された受け部材５の対向部５１と、鋼製横架材２のフランジ２１との間に配置されるが、固定荷重や積載荷重等の静的荷重に対して、床材１と鋼製横架材２が略同様に変位するので、減衰材６に静的荷重が入力し難い構造となっており、静的荷重により減衰材６にクリープ現象が生じ難く、減衰材６の劣化を防止することができる。 Further, the damping material 6 is disposed between the facing portion 51 of the receiving member 5 supported by the floor material 1 and the flange 21 of the steel horizontal member 2 as described above. Since the floor material 1 and the steel horizontal member 2 are displaced in a similar manner with respect to static loads such as, the structure is such that it is difficult to input a static load to the damping material 6, and the damping material is caused by the static load. The creep phenomenon hardly occurs in 6, and deterioration of the damping material 6 can be prevented.

次に、図２を参照して、本発明の第２実施形態の制振床構造を説明する。
第２実施形態の制振床構造における床構造本体３は、第１実施形態と同様に板状の床材１と鋼製横架材２とからなる。しかし、この例においては、図１に示される第１実施形態の床構造本体３のように、鋼製横架材２が全て同じ断面形状となっておらず、上下長さが異なる２種類の鋼製横架材２ａ、２ｂが用いられるようになっている。
すなわち、床構造本体３では、相対的に上下長さが短い鋼製横架材２ａと、当該鋼製横架材２ａより相対的に上下長さが長い鋼製横架材２ｂとが交互に配置されている。なお、第１実施形態と同様に、鋼製横架材２ａ、２ｂは、互いに平行に等間隔で配置されている。 Next, with reference to FIG. 2, the damping floor structure of 2nd Embodiment of this invention is demonstrated.
The floor structure main body 3 in the vibration-damping floor structure of the second embodiment includes a plate-like floor material 1 and a steel horizontal member 2 as in the first embodiment. However, in this example, like the floor structure main body 3 of the first embodiment shown in FIG. 1, the steel horizontal members 2 are not all in the same cross-sectional shape, and two types with different vertical lengths. Steel horizontal members 2a and 2b are used.
That is, in the floor structure main body 3, the steel horizontal member 2a whose vertical length is relatively short and the steel horizontal material 2b whose vertical length is relatively longer than the steel horizontal material 2a are alternately arranged. Is arranged. As in the first embodiment, the horizontal steel members 2a and 2b are arranged in parallel to each other at equal intervals.

鋼製横架材２ａのウェブ２２ａより、鋼製横架材２ｂのウェブ２２ｂの方が上下幅が広いものとなっている。
そして、この例の受け部材８は、直状の板体であり、交互に配置される鋼製横架材２ａと、鋼製横架材２ｂとのうちの上下に長い鋼製横架材２ｂ同士の間に配置されるようになっている。 The web 22b of the steel horizontal member 2b is wider than the web 22a of the steel horizontal member 2a.
And the receiving member 8 of this example is a straight plate body, and the steel horizontal member 2b long in the vertical direction among the steel horizontal members 2a and the steel horizontal members 2b arranged alternately. It is arranged between each other.

すなわち、間に上下長さが短い鋼製横架材２ａが配置された２つの上下に長い鋼製横架材２ｂの間に板状の受け部材８が架け渡された状態で配置される。受け部材８は、その両端部が、それぞれ、鋼製横架材２ｂの下側のフランジ２１ｂ上に載置され、かつ、フランジ２１ｂにビス止めされて固定されている。 In other words, the plate-shaped receiving member 8 is placed between two vertically long steel horizontal members 2b in which a steel horizontal member 2a having a short vertical length is arranged therebetween. Both ends of the receiving member 8 are mounted on the lower flange 21b of the steel horizontal member 2b, and are fixed to the flange 21b by screws.

このように長い鋼製横架材２ｂの下側のフランジ２１ｂ上に固定された受け部材８に対して、２つの上下に長い鋼製横架材２ｂの間に配置された上下に短い鋼製横架材２ａの下側のフランジ２１ａの方が上に配置され、受け部材８と鋼製横架材２ａの下側フランジ２１ａとの間に間隔があいている。この間隔に減衰材６が配置されている。すなわち、減衰材６は、受け部材８の上面と、鋼製横架材２ａの下側フランジ２１ａの下面との間に挟まれて配置されている。また、減衰材６は、受け部材８の上面と、鋼製横架材２ａの下側のフランジ２１ａの下面との両方に接触した状態となるが、ほとんど圧縮変形されていない状態となっている。 In this way, with respect to the receiving member 8 fixed on the lower flange 21b of the long steel horizontal member 2b, it is made of short steel vertically arranged between the two long steel horizontal members 2b. The lower flange 21a of the horizontal member 2a is arranged on the upper side, and a gap is provided between the receiving member 8 and the lower flange 21a of the steel horizontal member 2a. Attenuating material 6 is arranged at this interval. That is, the damping material 6 is disposed between the upper surface of the receiving member 8 and the lower surface of the lower flange 21a of the steel horizontal member 2a. In addition, the damping member 6 is in a state of being in contact with both the upper surface of the receiving member 8 and the lower surface of the flange 21a on the lower side of the steel horizontal member 2a, but is hardly compressed and deformed. .

以上のことから、上下に短い鋼製横架材２ａと上下に長い鋼製横架材２ｂとの間には、板状の受け部材８の厚さと減衰材６の厚さとを合わせた長さ分だけ上下長さに差があることになる。
減衰材６は、第１実施形態と同様の周知の粘弾性材からなる減衰材である。
第２実施形態においては、受け部材８と減衰材６とからなる制振装置４が短い鋼製横架材２ａ毎に配置されることになり、基本的に各鋼製横架材２ａの全てに制振装置４が配置されることが好ましい。また、各鋼製横架材２ａ毎に軸方向に間隔をあけて複数の制振措置４が配置されることが好ましい。 From the above, between the steel horizontal member 2a that is short in the vertical direction and the steel horizontal material 2b that is long in the vertical direction, the total length of the plate-shaped receiving member 8 and the thickness of the damping material 6 is combined. There will be a difference in vertical length.
The damping material 6 is a damping material made of a known viscoelastic material similar to the first embodiment.
In 2nd Embodiment, the damping device 4 which consists of the receiving member 8 and the damping material 6 will be arrange | positioned for every short steel horizontal member 2a, and basically all the steel horizontal members 2a are all. It is preferable that the vibration damping device 4 is disposed on the side. In addition, it is preferable that a plurality of vibration damping measures 4 be arranged at intervals in the axial direction for each steel horizontal member 2a.

第２実施形態においては、受け部材８が床材１ではなく鋼製横架材２ｂに固定されるが、振動を減衰すべき鋼製横架材２ａと異なる位置に配置された鋼製横架材２ｂに受け部材８が支持されることで、振動時に受け部材８の変位と、減衰材６を介して受け部材８に対向する鋼製横架材２ａの変位とは、位相差等により異なるものとなっている。
したがって、第１実施形態と同様に床構造本体３の振動を速やかに減衰することが可能となる。 In the second embodiment, the receiving member 8 is fixed to the steel horizontal member 2b instead of the floor material 1, but the steel horizontal member arranged at a position different from the steel horizontal member 2a to be damped in vibration. Since the receiving member 8 is supported by the material 2b, the displacement of the receiving member 8 during vibration and the displacement of the steel horizontal member 2a facing the receiving member 8 through the damping material 6 differ depending on the phase difference or the like. It has become a thing.
Accordingly, it is possible to quickly attenuate the vibration of the floor structure main body 3 as in the first embodiment.

第２実施形態の受け部材８は、第１実施形態の受け部材５に対して長尺なものとなり、サイズが大きくなるが、受け部材８が直状の板体なので、運送時や保管時に効率的に配置することが可能であり、運送時や保管時のスペース効率に優れている。
また、フランジ２１ａに載せた状態で、フランジ２１ａのビス止めが可能なので、施工性にも優れている。 The receiving member 8 of the second embodiment is longer than the receiving member 5 of the first embodiment and increases in size. However, since the receiving member 8 is a straight plate, it is efficient during transportation and storage. It is possible to arrange them efficiently and is excellent in space efficiency during transportation and storage.
Moreover, since the screwing of the flange 21a is possible in a state of being placed on the flange 21a, the workability is also excellent.

この場合も、静的荷重に対して、鋼製横架材２ａと鋼製横架材２ｂとがほぼ同様に変位するので、減衰材６に静的荷重が入力し難い構造となっており、減衰材６にクリープ現象が発生し難いものとなっている。 Also in this case, since the steel horizontal member 2a and the steel horizontal member 2b are displaced in the same manner with respect to the static load, it has a structure in which it is difficult to input the static load to the damping member 6, It is difficult for the creeping phenomenon to occur in the damping material 6.

次に、図３を参照して、本発明の第３実施形態の制振床構造を説明する。
第３実施形態においては、第１実施形態と同様に、床構造本体３における全ての鋼製横架材２の断面形状が等しいものとなっている。 Next, with reference to FIG. 3, the vibration-damping floor structure of 3rd Embodiment of this invention is demonstrated.
In 3rd Embodiment, the cross-sectional shape of all the steel horizontal members 2 in the floor structure main body 3 is equal like 1st Embodiment.

受け部材９は、基本的に直状の板体であるが、上面の中央部に窪み９ａを有するものとなっている。窪み９ａの受け部材９の長さ方向の中央部は、Ｈ型鋼からなる鋼製横架材２のフランジ２１の幅より広い範囲で水平となっており、この水平な部分の左右が中央から端に向うほど上に向う斜面となっている。
したがって、受け部材９は、左右端部の肉厚に大して中央部の肉厚が薄くなっていることにより、中央部に上面に窪み９ａを有し、この左右端部の肉厚と、中央部の肉厚との差がほぼ減衰材６の厚みとなっている。 The receiving member 9 is basically a straight plate, but has a recess 9a at the center of the upper surface. The central portion of the recess 9a in the length direction of the receiving member 9 is horizontal in a range wider than the width of the flange 21 of the steel horizontal member 2 made of H-shaped steel, and the left and right sides of this horizontal portion end from the center. The slope is facing upward as it goes to.
Therefore, the receiving member 9 has a depression 9a on the upper surface in the central portion because the thickness of the central portion is smaller than the thickness of the left and right end portions. The thickness of the damping material 6 is almost the difference from the thickness of the material.

受け部材９の左右端部が１つおきの鋼製横架材２の下側フランジ２１に固定されるようになっている。すなわち、間に１つの鋼製横架材２を挟んで配置される２つの鋼製横架材２の下側フランジ２１に受け部材９の左右端部がそれぞれビス止めされる。また、この例では、フランジ２１の下側に受け部材９が配置される。 The left and right end portions of the receiving member 9 are fixed to the lower flange 21 of every other steel horizontal member 2. That is, the left and right end portions of the receiving member 9 are screwed to the lower flanges 21 of the two steel horizontal members 2 arranged with one steel horizontal member 2 interposed therebetween. In this example, the receiving member 9 is arranged below the flange 21.

そして、２つの鋼製横架材２に左右両端部を固定された受け部材９の中央部上には、２つの鋼製横架材２の間に配置される鋼製横架材２が配置されるが、前記窪み９ａにより、間の鋼製横架材２と受け部材９の上面との間には、間隔があいた状態となっており、この間隔に減衰材６が挿入された状態に配置されている。 And on the center part of the receiving member 9 fixed to the two steel horizontal members 2 at both left and right ends, the steel horizontal member 2 arranged between the two steel horizontal members 2 is arranged. However, there is a gap between the steel horizontal member 2 and the upper surface of the receiving member 9 due to the depression 9a, and the damping member 6 is inserted in this gap. Is arranged.

この例においては、受け部材９と減衰材８からなる制振装置４は、例えば、一つおきの鋼製横架材２毎に、当該鋼製横架材２の軸方向に沿って複数並んで配置される。また、制振装置４を千鳥状に配置することで、両端となる鋼製横架材を除く残りの全ての鋼製横架材２に対応して制振装置４を設けてもよい。すなわち、図３に示すように、例えば、５本の鋼製横架材２がある場合に、図３の場合と同様に、左端の鋼製横架材２と中央の鋼製横架材２との間に受け部材９を架け渡すとともに、右端の鋼製横架材２と中央の鋼製横架材２との間に受け部材９を架け渡す。この状態では、それぞれ左端より１つ内側の鋼製横架材２および右端より１つ内側の鋼製横架材２と、受け部材９との間に減衰材６が配置される。 In this example, a plurality of vibration damping devices 4 including the receiving member 9 and the damping member 8 are arranged along the axial direction of the steel horizontal member 2 for every other steel horizontal member 2, for example. It is arranged with. Moreover, you may provide the damping device 4 corresponding to all the remaining steel horizontal members 2 except the steel horizontal member used as both ends by arrange | positioning the damping device 4 in zigzag form. That is, as shown in FIG. 3, for example, when there are five steel horizontal members 2, as in the case of FIG. 3, the left horizontal steel member 2 and the central steel horizontal member 2 are provided. And the receiving member 9 is bridged between the steel horizontal member 2 at the right end and the steel horizontal member 2 at the center. In this state, the damping member 6 is arranged between the steel horizontal member 2 one inner side from the left end, the steel horizontal member 2 one inner side from the right end, and the receiving member 9.

次に、鋼製横架材２の軸方向にずれた位置で、左端より１つ内側の鋼製横架材２と右端より１つ内側の鋼製横架材２との間に受け部材９を架け渡して配置する。この場合には、受け部材９と中央の鋼製横架材２との間の減衰材６が配置される。
上述の２つのパターンで制振装置４を配置すれば、両端の鋼製横架材２を除く全ての横架材２に制振装置４を配置することができる。 Next, at a position shifted in the axial direction of the steel horizontal member 2, the receiving member 9 is placed between the steel horizontal member 2 one inner side from the left end and the steel horizontal member 2 one inner side from the right end. Is placed and placed. In this case, the damping member 6 between the receiving member 9 and the central steel horizontal member 2 is disposed.
By arranging the damping device 4 with two patterns described above can be arranged damping device 4 for all horizontal member 2 except the steel horizontal member 2 at both ends.

周知の粘弾性体からなる減衰材６は、第２実施形態の場合と同様に、受け部材９の上面と鋼製横架材２の下面とに接触した状態で配置されるが、ほとんど圧縮変形された状態となっていない。
この例においても、第２実施形態と略同様の作用効果を得ることができ、かつ、鋼製横架材２として、上下長さの異なるものを用いずに済むことで、床構造本体３の構造を簡単なものとすることができる。 The damping material 6 made of a known viscoelastic body is disposed in contact with the upper surface of the receiving member 9 and the lower surface of the steel horizontal member 2 as in the second embodiment, but is almost compressed and deformed. It is not in the state.
Also in this example, it is possible to obtain substantially the same operational effects as in the second embodiment, and it is not necessary to use the steel horizontal member 2 having different vertical lengths. The structure can be simplified.

次に、図４を参照して、本発明の第４実施形態の制振床構造について説明する。
第２実施形態の床構造本体３において、ひとつおきに上下に短い鋼製横架材２ａと上下に長い鋼製横架材２ｂとが配置された状態、すなわち、２つの上下に長い鋼製横架材２ｂの間に１つの上下に短い鋼製横架材２ａが配置された状態であったのに対して、第４実施形態の床構造本体３は、２つの上下に長い鋼製横架材２ｂの間に１つではなく、複数（例えば、３つ）の上下に短い鋼製横架材２ａが配置されている。 Next, with reference to FIG. 4, the damping floor structure of 4th Embodiment of this invention is demonstrated.
In the floor structure main body 3 of the second embodiment, every other short steel horizontal member 2a and two vertically long steel horizontal members 2b are arranged, that is, two vertically long steel horizontal members. Whereas the short steel horizontal member 2a is arranged between the upper and lower members 2b, the floor structure main body 3 of the fourth embodiment has two vertically long steel horizontal members. Short steel horizontal members 2a are arranged above and below a plurality (for example, three) instead of one between the materials 2b.

したがって、２つの上下に長い鋼製横架材２ｂの間に架け渡されて配置される受け部材８の上には、複数の上下に短い鋼製横架材２ａが配置される。そして、それぞれの鋼製横架材２ａと、受け部材８との間にそれぞれ減衰材６が配置されることで、これら複数の鋼製横架材２ａの振動の減衰を１つの受け部材８で可能とすることができる。
なお、第４実施形態の制振床構造は、上述のように２つの上下に長い鋼製横架材２ｂの間に複数の上下に短い鋼製横架材２ａが配置されるとともに、１つの受け部材８で複数の上下に短い鋼製横架材２ａの減衰を行う以外は、第２実施形態の制振床構造と同様の構成を有するものとなっている。 Accordingly, a plurality of short steel horizontal members 2a are arranged on the upper and lower sides on the receiving member 8 arranged so as to be bridged between the two upper and lower steel horizontal members 2b. And the damping material 6 is arrange | positioned between each steel horizontal member 2a and the receiving member 8, respectively, The damping | damping of the vibration of these several steel horizontal members 2a is carried out by one receiving member 8. Can be possible.
In addition, the vibration-damping floor structure of the fourth embodiment includes a plurality of vertically long steel horizontal members 2a between two vertically long steel horizontal members 2b as described above, and one The structure is the same as that of the vibration-damping floor structure of the second embodiment except that the plurality of short steel horizontal members 2a are vertically damped by the receiving member 8.

したがって、第２実施形態と同様の作用効果を奏するとともに、１つの受け部材８で複数の鋼製横架材２ａの制振が可能となり、コストの低減と施工性の向上を図ることができる。
なお、第４実施形態において、受け部材８を鋼製横架材２ａ、２ｂに対して水平で直交する方向ではなく、水平で斜めに傾斜した方向としてもよい。
なお、上記各実施形態において、鋼製横架材２，２ａ，２ｂは、Ｈ形鋼に限られるものではなく、Ｃ形鋼、角形鋼管等の他の形鋼であってもよい。 Accordingly, the same effects as those of the second embodiment can be obtained, and the vibration of the plurality of horizontal steel members 2a can be controlled by the single receiving member 8, thereby reducing the cost and improving the workability.
In addition, in 4th Embodiment, it is good also as the direction which inclined horizontally and diagonally instead of the direction in which the receiving member 8 is horizontal and orthogonal with respect to the steel horizontal members 2a and 2b.
In each of the above embodiments, the steel horizontal members 2, 2a, 2b are not limited to the H-shaped steel, but may be other shaped steels such as a C-shaped steel and a rectangular steel pipe.

次に、本発明の実施例を説明する。
この実施例は、第１実施形態の制振床構造を有するものであるが、実施例を説明する前に、実施例の制振床構造から制振装置４を取り除いた基本となる床構造（床構造本体３）を比較例として説明する。
図５は、制振床構造の制振装置４が取り付けられていない状態の床構造本体３を示すものである。 Next, examples of the present invention will be described.
This example has the vibration-damping floor structure of the first embodiment, but before explaining the example, a basic floor structure in which the damping device 4 is removed from the vibration- damping floor structure of the example ( The floor structure body 3) will be described as a comparative example.
FIG. 5 shows the floor structure main body 3 in a state where the vibration damping device 4 having the vibration damping floor structure is not attached.

床材１は、厚さ１５ｍｍの構造用合板であり、幅２７３０ｍｍとなっている。また、床構造本体３の左右の支持点間のスパンは、５４６０ｍｍとなっている。なお、床材１は、複数の構造用合板を面方向につなげるように貼りあわせて構成されている。
鋼製横架材（床梁材）２としてのＨ型鋼は、高さ（ウェブ２２部分）が２５０ｍｍで、幅（フランジ２１部分）が１００ｍｍとなっており、ウェブ２２の厚さが３．２ｍｍ、フランジ２１の厚さが４．５ｍｍとなっている。 The flooring 1 is a structural plywood having a thickness of 15 mm and has a width of 2730 mm. The span between the left and right support points of the floor structure main body 3 is 5460 mm. In addition, the flooring 1 is configured by bonding a plurality of structural plywoods so as to be connected in the surface direction.
The H-shaped steel as the horizontal steel frame material (floor beam material) 2 has a height (web 22 portion) of 250 mm, a width (flange 21 portion) of 100 mm, and a web 22 thickness of 3.2 mm. The thickness of the flange 21 is 4.5 mm.

そして、鋼製横架材２は、その中心間の間隔が４５５ｍｍとなるように等間隔で互いに平行に配置されている。これら床材１および鋼製横架材２は、それぞれ両端部が支持部材９１に固定され、支持部材９１は、ベース９２の両端部の架台９３に載せられている。
このような床構造本体３を用いて床構造本体３における位置の違いによる振動の上下方向の変位の違いを求める実験を行った。 The steel horizontal members 2 are arranged in parallel to each other at equal intervals so that the distance between the centers is 455 mm. Both ends of the flooring 1 and the steel horizontal member 2 are fixed to a support member 91, and the support member 91 is placed on a pedestal 93 at both ends of the base 92.
Using such a floor structure main body 3, an experiment was performed to obtain a difference in vertical displacement of vibration due to a difference in position in the floor structure main body 3.

ここでは、床材１上のほぼ中央の加振位置Ｄに油粘土９４を床材１の上方４００ｍｍの位置から自由落下することで加振した。
そして、この加振による振動の上下方向の変位を測定位置Ａと、測定位置Ｂとにおいて、レーザ変位計９６で測定した。測定位置Ａは、加振位置Ｄの直下で鋼製横架材２の下側フランジ２１の位置である。また、測定位置Ｂは、測定位置Ａの近傍で、床材１の部分である。なお、測定位置Ａが受け部材５の対向部５１に対向するものとした場合に、測定位置Ｂに受け部材５の取付部５３が固定される位置関係となっている。したがって、測定位置Ｂの振動は、受け部材Ｂの測定位置Ａに対向する対向部５１の振動に近似したものとみなすことができる。 Here, the oil clay 94 was vibrated by free-falling from the position 400 mm above the flooring 1 to the vibration position D substantially at the center on the flooring 1.
Then, the displacement in the vertical direction of the vibration caused by this excitation was measured at a measurement position A and a measurement position B with a laser displacement meter 96. The measurement position A is the position of the lower flange 21 of the steel horizontal member 2 immediately below the vibration position D. The measurement position B is a portion of the flooring 1 in the vicinity of the measurement position A. When the measurement position A is opposite to the facing portion 51 of the receiving member 5, the mounting portion 53 of the receiving member 5 is fixed to the measuring position B. Therefore, the vibration at the measurement position B can be regarded as being approximate to the vibration of the facing portion 51 facing the measurement position A of the receiving member B.

測定位置Ａおよび測定位置Ｂにおける加振による上下方向の変位の測定結果を図６のグラフに示す。
図６に示すように、測定位置Ａの変位（実線）と測定位置Ｂの変位（破線）とには、明らかに差があり、測定位置Ａの変位に対して測定位置Ｂの変位に遅れが有り、位置の違いによる位相差が認められる。また、測定位置Ａと測定位置Ｂとでは、変位の波形にも僅かに違いが認められる。 The graph of FIG. 6 shows the measurement result of the vertical displacement caused by the vibration at the measurement position A and the measurement position B.
As shown in FIG. 6, there is a clear difference between the displacement at the measurement position A (solid line) and the displacement at the measurement position B (broken line), and the displacement at the measurement position B is delayed with respect to the displacement at the measurement position A. Yes, phase difference due to position difference is recognized. A slight difference is also observed in the displacement waveform between the measurement position A and the measurement position B.

したがって、上述の結果から受け部材５の対向部５１が対向し、測定位置Ａに対応する鋼製横架材２の下側フランジ２１と、測定位置Ｂに対応し、受け部材５の取付部５３が取り付けられる床材１とには変位に違いがあり、測定位置Ｂと受け部材５とが略同様の振動することから、対向部５１とフランジ２１との間にも上下方向の変位に違いが生じ、対向部５１とフランジ２１とが、上下方向に沿って近づいたり、遠ざかったりすることになる。このことから、対向部５１とフランジ２１とが近づいた場合に、これらの間に配置される減衰材６を圧縮することによって振動が減衰されることになる。 Therefore, the facing portion 51 of the receiving member 5 faces from the above result, the lower flange 21 of the steel horizontal member 2 corresponding to the measurement position A, and the mounting portion 53 of the receiving member 5 corresponding to the measurement position B. There is a difference in displacement with respect to the flooring 1 to which is attached, and since the measurement position B and the receiving member 5 vibrate in substantially the same manner, there is also a difference in the vertical displacement between the facing portion 51 and the flange 21. As a result, the facing portion 51 and the flange 21 approach or move away in the vertical direction. For this reason, when the facing portion 51 and the flange 21 approach each other, the vibration is damped by compressing the damping material 6 disposed between them.

図７は、第１実施形態の制振床構造と同様の制振床構造を有するもので、図５に示す床構造本体３に受け部材５と減衰材６とからなる制振装置４を取り付けたものであり、本発明の実施例となるものである。
ここでは、両端となる鋼製横架材２を除く残りの鋼製横架材２にそれぞれ１つずつ制振装置４を取り付けている。また、図７の黒丸の列で示される部分に鋼製横架材２に直交する方向に一列に並んで制振装置４を取り付けている。 FIG. 7 has a vibration-damping floor structure similar to the vibration- damping floor structure of the first embodiment. A vibration damping device 4 comprising a receiving member 5 and a damping material 6 is attached to the floor structure main body 3 shown in FIG. This is an example of the present invention.
Here, one damping device 4 is attached to each of the remaining steel horizontal members 2 excluding the steel horizontal members 2 at both ends. Moreover, the damping device 4 is attached to the part shown by the black circle row | line | column of FIG. 7 along with the direction orthogonal to the steel horizontal member 2 in a line.

そして、上述の場合とほぼ同様の条件で加振実験を行った。加振位置は、上述の加振位置Ｂであり、測定位置Ａで測定を行った。なお、測定位置Ａは、制振装置４の取り付け位置から少しずれた位置（鋼製横架材２の軸方向に製振制御装置４の中心から１００ｍｍずれた位置）であり、鋼製横架材２の下側のフランジ２１を直接レーザ変位計９６で測定した。 And the vibration experiment was performed on the conditions substantially the same as the above-mentioned case. The vibration position is the vibration position B described above, and measurement was performed at the measurement position A. The measurement position A is a position slightly shifted from the mounting position of the vibration damping device 4 (a position shifted by 100 mm from the center of the vibration control device 4 in the axial direction of the steel horizontal member 2). The lower flange 21 of the material 2 was directly measured with a laser displacement meter 96.

また、図８は、第１実施形態の制振床構造から減衰材６を取り除き、受け部材５の対向部５１と鋼製横架材２の下側フランジ２１とを例えばビス等で固定したものである。この構造は、特許文献４に記載された従来例に類似する比較例となる。
この図８に示す比較例となる制振床構造においても、図７の場合と同様の加振実験を行った。 FIG. 8 shows a structure in which the damping material 6 is removed from the vibration damping floor structure of the first embodiment, and the facing portion 51 of the receiving member 5 and the lower flange 21 of the steel horizontal member 2 are fixed with, for example, screws. It is. This structure is a comparative example similar to the conventional example described in Patent Document 4.
In the damping floor structure as a comparative example shown in FIG. 8, the same vibration experiment as in FIG. 7 was performed.

また、図５に示す床構造においても、図７の場合と同様の加振実験を行った。
図９は、図７に示す実施例となる制振床構造の加振実験結果を示すもので、時間経過に対応する上下方向の変位の変化をグラフとして示している。図１０は、図５に示す比較例となる制振装置なしの床構造の加振実験結果を示すもので、時間経過に対応する上下方向の変位の変化をグラフとして示している。図１１は、図８に示す比較例となる制振床構造の加振実験結果を示すもので、時間経過に対応する上下方向の変位の変化をグラフとして示している。 Further, in the floor structure shown in FIG. 5, the same vibration experiment as in the case of FIG. 7 was performed.
FIG. 9 shows the vibration test result of the damping floor structure according to the embodiment shown in FIG. 7, and shows the change in the vertical displacement corresponding to the passage of time as a graph. FIG. 10 shows the result of the vibration experiment of the floor structure without the vibration damping device as a comparative example shown in FIG. 5, and shows the change in the vertical displacement corresponding to the passage of time as a graph. FIG. 11 shows the result of the vibration experiment of the damping floor structure as a comparative example shown in FIG. 8, and shows the change in the vertical displacement corresponding to the passage of time as a graph.

図９に示す実施例の制振床構造の加振実験の結果と、図１０に示す比較例としての制振装置無しの床構造の加振実験結果を比較すると、１秒経過した当たりで、明らかに実施例の方が、比較例より上下方向の変位の振幅が小さくなっている。また、実施例では、略２秒で振動が終了しているが、比較例では３秒過ぎても僅かな振動が見られる。
以上のことから、実施例の制振床構造による振動の減衰の効果が認められる。 When comparing the result of the vibration test of the vibration control floor structure of the embodiment shown in FIG. 9 with the result of the vibration test of the floor structure without a vibration control device as a comparative example shown in FIG. Apparently, the amplitude of the displacement in the vertical direction is smaller in the example than in the comparative example. In the example, the vibration is finished in about 2 seconds, but in the comparative example, a slight vibration is seen even after 3 seconds.
From the above, the effect of damping the vibration by the damping floor structure of the embodiment is recognized.

また、図１１に示す減衰材の無い比較例の結果と図９に示す実施例の結果とを比較しても、図９に示す実施例の方が減衰の効果が高いことが明らかである。
なお、図１１に示す比較例では、床材１に固定された受け部材５と、鋼製横架材２とが固定されていることにより、この比較例の床構造は、上述のように振動の変位に位相差がある床材１の受け部材５の取り付け位置と、鋼製横架材２の対向部５１に対向する位置との間に弾性部材としての受け部材５が配置されている構造と考えることができる。 Further, even if the result of the comparative example without the damping material shown in FIG. 11 is compared with the result of the example shown in FIG. 9, it is clear that the example shown in FIG. 9 has a higher damping effect.
In the comparative example shown in FIG. 11, the receiving member 5 fixed to the flooring 1 and the steel horizontal member 2 are fixed, so that the floor structure of this comparative example vibrates as described above. Structure in which the receiving member 5 as an elastic member is arranged between the mounting position of the receiving member 5 of the flooring 1 having a phase difference in displacement and the position facing the facing portion 51 of the steel horizontal member 2 Can be considered.

この場合に、受け部材５が金属製で、粘弾性材でないことから、減衰材６と比較して高い反発性があり、受け部材５が床材１と鋼製横架材２との変位差をなくすように作用して振幅が一時的に減少しても、その後の弾性部材としての受け部材５の反発により再び振動の振幅が大きくなるような挙動を示しており、短時間で振動が減衰しない状態となる。すなわち、受け部材５と鋼製横架材２との間に位相差等による変位の違いがあることで、図８に示す比較例では振動が減衰され難い状況となるが、図７に示す本発明の実施例では、受け部材５と鋼製横架材２との間に位相差等による変位の違いがあることで、同様に振動する床構造内で、床構造の振動を減衰することが可能となる。 In this case, since the receiving member 5 is made of metal and is not a viscoelastic material, it has a higher resilience than the damping material 6, and the receiving member 5 has a displacement difference between the floor material 1 and the steel horizontal member 2. Even if the amplitude is temporarily decreased by acting so as to eliminate the vibration, the behavior is such that the amplitude of the vibration increases again due to the subsequent repulsion of the receiving member 5 as the elastic member, and the vibration is attenuated in a short time. It becomes a state that does not. That is, because there is a difference in displacement due to a phase difference or the like between the receiving member 5 and the steel horizontal member 2, the vibration is hardly attenuated in the comparative example shown in FIG. In the embodiment of the invention, there is a difference in displacement due to a phase difference or the like between the receiving member 5 and the steel horizontal member 2, so that the vibration of the floor structure can be attenuated in the floor structure that vibrates similarly. It becomes possible.

１床材
２鋼製横架材
３床構造本体
５受け部材
５１対向部
５２固定部
６減衰材
８受け部材
９受け部材 DESCRIPTION OF SYMBOLS 1 Floor material 2 Steel horizontal material 3 Floor structure main body 5 Receiving member 51 Opposing part 52 Fixing part 6 Damping material 8 Receiving member 9 Receiving member

Claims

平板状の床材が互いに間隔をあけて配列された複数の鋼製横架材により支持された床構造本体の上下方向の振動を減衰させる制震床構造であって、
前記鋼製横架材の下側に、前記床構造本体の当該鋼製横架材以外の部分に支持された受け部材が設けられ、
当該受け部材と当該鋼製横架材との間に減衰材が設けられていることを特徴とする制震床構造。 A damping floor structure that attenuates vibrations in the vertical direction of the floor structure body supported by a plurality of steel horizontal members in which flat floor materials are arranged at intervals,
Under the steel horizontal member, a receiving member supported by a portion other than the steel horizontal member of the floor structure body is provided,
A damping floor structure characterized in that a damping material is provided between the receiving member and the steel horizontal member.

前記受け部材は、前記鋼製横架材の下側で当該鋼製横架材に対向する対向部と、当該対向部から左右上方にそれぞれ延出して、前記床材に固定される固定部とを備え、当該受け部材の前記対向部と前記鋼製横架材の下端との間に前記減衰材が配置されていることを特徴とする請求項１に記載の制震床構造。 The receiving member includes a facing portion that faces the steel horizontal member on the lower side of the steel horizontal member, and a fixing portion that extends to the left and right from the facing portion and is fixed to the floor material. The damping floor structure according to claim 1, wherein the damping material is disposed between the facing portion of the receiving member and a lower end of the steel horizontal member.

前記床構造本体の前記鋼製横架材のうちの間に他の鋼製横架材を挟んで離れた位置にある２つの鋼製横架材の下端部どうしの間に前記受け部材が架け渡された状態に設けられ、２つの前記鋼製横架材の間にある前記鋼製横架材の下端と前記受け部材との間に前記減衰材が配置されていることを特徴とする請求項１に記載の制震床構造。 The receiving member is bridged between the lower ends of two steel horizontal members that are separated by sandwiching another steel horizontal member between the steel horizontal members of the floor structure body. The damping material is provided between the lower end of the steel horizontal member and the receiving member provided between the two steel horizontal members, and is provided in a passed state. Item 3. The seismic control floor structure according to item 1.

前記鋼製横架材がＨ形鋼からなり、前記受け部材が前記Ｈ形鋼のフランジに接続されていることを特徴とする請求項３に記載の制震床構造。 The seismic control floor structure according to claim 3, wherein the horizontal steel member is made of H-shaped steel, and the receiving member is connected to a flange of the H-shaped steel.