JP6825842B2

JP6825842B2 - Floor structure

Info

Publication number: JP6825842B2
Application number: JP2016151815A
Authority: JP
Inventors: 幸浩菊川
Original assignee: Sanyo Industries Ltd
Current assignee: Sanyo Industries Ltd
Priority date: 2016-08-02
Filing date: 2016-08-02
Publication date: 2021-02-03
Anticipated expiration: 2036-08-02
Also published as: JP2018021328A

Description

本発明は、体育館、多目的ホール等において、運動競技等の他各種イベントが行える床構造に関する。 The present invention relates to a floor structure in which various events such as athletics can be held in a gymnasium, a multipurpose hall, or the like.

近年、体育館、ホール等の利用形態として、通常に運動、集会等を行う場所としての利用以外に、コンサート等の各種イベント会場として用いられる場合がある。このようにイベント会場として利用する場合には、会場設定等のためにフォークリフト等の重量機械が館内の床の上を走行し、また多数の人数が館内に出入りすることから床には過大な荷重がかかる。このため、イベント会場としても使用される体育館等の床構造は、過大な荷重に耐え得るよう堅牢な構造にする必要がある。 In recent years, gymnasiums, halls, and the like may be used as venues for various events such as concerts, in addition to being used as places for regular exercise and gatherings. When used as an event venue in this way, heavy machinery such as forklifts run on the floor in the hall to set the venue, and a large number of people enter and leave the hall, so the floor is overloaded. It takes. Therefore, the floor structure of the gymnasium, which is also used as an event venue, needs to be a robust structure so that it can withstand an excessive load.

一方、過大な荷重に耐え得る床構造の床は、硬質で弾力性能の悪い構造となり、このため運動者のアキレス腱等を痛め、また転倒時に打撲、怪我などが起こりやすくなる等、安全性及び、運動を行う場所として機能的にも問題がある。このため、多目的ホール等の大型建物においても、運動の場としても十分な運動性能が発揮できる床構造の要望もある。 On the other hand, the floor with a floor structure that can withstand an excessive load is hard and has poor elasticity, which damages the Achilles tendon of the exerciser and makes it easy for bruise and injury to occur when falling. There is also a functional problem as a place to exercise. For this reason, there is also a demand for a floor structure that can exhibit sufficient exercise performance as a place for exercise even in a large building such as a multipurpose hall.

ここで例えば、特許文献１に記載の床支持構造が知られている。これは、床束本体の上に大引受を取り付け、この大引受の上に大引及び根太を配置し、この根太の上に床材を敷設し、大引と大引受との間及び根太と大引との間に、それぞれ防振ゴムからなる緩衝部材を介在させ、これにより直接的に床束本体に伝わる振動を吸収し、騒音等を防止するものである。 Here, for example, the floor support structure described in Patent Document 1 is known. This involves mounting a large underwriter on the main body of the floor bundle, placing the large underwriting and joists on top of this large underwriting, laying flooring material on this joist, and between the large underwriting and the joists and with the joists. A cushioning member made of anti-vibration rubber is interposed between the underwriting and the floor bundle, thereby absorbing the vibration directly transmitted to the floor bundle main body and preventing noise and the like.

また特許文献２に係る床構造は、スラブに立設した支持脚に支持される大引材、大引材の上部に配置され山部と谷部が形成されたデッキプレート、デッキプレートの谷部に配置された緩衝具、この緩衝具の上部に固定されデッキプレートの山部より高い位置に設けられる根太材及び床材等を有するものである。
この床構造は、荷重により緩衝具の圧縮変形が所定量に達したとき、デッキプレートの山部に床材が当接して緩衝具の変形を規制することから、運動使用時の弾力性能に優れ過大な荷重にも耐えるというものである。 Further, the floor structure according to Patent Document 2 includes a large pulling material supported by support legs erected on a slab, a deck plate arranged above the large pulling material and having peaks and valleys formed, and valleys of the deck plate. It has a shock absorber arranged in the above, a joist material and a floor material fixed to the upper part of the shock absorber and provided at a position higher than the mountain portion of the deck plate.
This floor structure has excellent elasticity during exercise because the floor material comes into contact with the mountainous part of the deck plate to regulate the deformation of the shock absorber when the compressive deformation of the shock absorber reaches a predetermined amount due to the load. It can withstand an excessive load.

特開２０１６−１０２３９８号公報Japanese Unexamined Patent Publication No. 2016-10398 特許第４４３０５５３号公報Japanese Patent No. 4430553

さて、上記特許文献１に記載の床支持構造は、床からの振動を吸収し、騒音等の発生を防ぐという効果を有するが、床からの過大な荷重に対しては配慮がなく、また緩衝部材の強度の点などで問題がある。
また引用文献２に係る床構造は、床からの過大な荷重にも耐える性能を確保するため、デッキプレートを使用しているが、一般にデッキプレート材は鋼板からなる重量材であるため、施工に際しては多くの人手を要し、また施工に時間がかかる等の問題がある。 By the way, the floor support structure described in Patent Document 1 has the effect of absorbing vibration from the floor and preventing the generation of noise and the like, but there is no consideration for an excessive load from the floor and buffering. There is a problem in terms of the strength of the members.
Further, in the floor structure according to Cited Document 2, a deck plate is used in order to secure the performance to withstand an excessive load from the floor. However, since the deck plate material is generally a heavy material made of a steel plate, it is used during construction. Has problems such as requiring a lot of manpower and taking time for construction.

本発明は上記問題点を解決するためになされたものであり、耐荷重性能及び弾力性能が十分に確保され、また施工性、生産性等に優れた床構造を提供することを目的とする。 The present invention has been made to solve the above problems, and an object of the present invention is to provide a floor structure in which load bearing performance and elasticity performance are sufficiently ensured and excellent workability, productivity and the like are provided.

以上の技術的課題を解決するため、本発明に係る床構造は図１等に示すように、基礎面３の上に所定間隔をおいて配置された第一の大引材４と、上記各第一の大引材４の上部に、これらと交差しかつ所定間隔をおいて載置された第二の大引材６と、上記第二の大引材６の上側に配置された床材１６と、を有し、上記第二の大引材６の内の一部の第二の大引材（Ｂ）６ｂと、上記第一の大引材４との間又は上記床材１６との間に弾性体８を介在させ、この第二の大引材（Ｂ）６ｂにより上記床材１６を支持させ、上記第二の大引材６の内の残部の第二の大引材（Ａ）６ａと、上記床材１６との間に間隙（Ｇａ）を形成した構成である。
ここで、上記間隙（Ｇａ）により、上記床材１６からの荷重が小さいときには、上記第二の大引材（Ｂ）６ｂのみにより上記床材１６を弾性支持し、上記荷重が大きくなり、上記弾性体８が圧縮して上記間隙（Ｇａ）が消滅したときには、全ての上記第二の大引材６（Ａ，Ｂ）により上記床材１６を支持することが可能となる。 In order to solve the above technical problems, as shown in FIG. 1 and the like, the floor structure according to the present invention includes the first large pulling material 4 arranged on the foundation surface 3 at predetermined intervals, and each of the above. A second large pulling material 6 which is placed on the upper part of the first large pulling material 4 at a predetermined interval and intersecting these, and a flooring material which is arranged above the second large pulling material 6. 16 and, between the second large pulling material (B) 6b, which is a part of the second large pulling material 6, and the first large pulling material 4, or the floor material 16. An elastic body 8 is interposed between the two, and the floor material 16 is supported by the second large pulling material (B) 6b, and the remaining second large pulling material (2) of the second large pulling material 6 is supported. A) A gap (Ga) is formed between 6a and the floor material 16.
Here, when the load from the floor material 16 is small due to the gap (Ga), the floor material 16 is elastically supported only by the second large pulling material (B) 6b, and the load becomes large. When the elastic body 8 is compressed and the gap (Ga) disappears, the floor material 16 can be supported by all the second large pulling members 6 (A, B).

本発明に係る床構造は、上記第一の大引材４を、上記基礎面３に立設した支持部材２に支持させた構成である。
また、本発明に係る床構造は、上記支持部材２における大引保持部２６と上記第一の大引材４との間に、弾性部材３０を介在させた構成である。 The floor structure according to the present invention has a structure in which the first large pulling member 4 is supported by a support member 2 erected on the foundation surface 3.
Further, the floor structure according to the present invention has a structure in which an elastic member 30 is interposed between the large pull holding portion 26 of the support member 2 and the first large pull member 4.

本発明に係る床構造は、上記第二の大引材（Ｂ）６ｂの高さ幅を、上記第二の大引材（Ａ）６ａの高さ幅よりも小さくし、且つ上記弾性体８を上記第二の大引材（Ｂ）６ｂの下部又は上部に介在させた構成である。 In the floor structure according to the present invention, the height width of the second large pulling material (B) 6b is made smaller than the height width of the second large pulling material (A) 6a, and the elastic body 8 Is interposed in the lower part or the upper part of the second large pulling material (B) 6b.

また、本発明に係る床構造は、圧縮制限部材１０として、非弾性材からなる制限部７６を縦向きに形成して上記弾性体８の近傍に配置し、この制限部７６の縦の長さを上記弾性体８の縦の長さよりも短くして両者間に縦方向の間隙（Ｇｂ）を形成し、上記荷重による上記弾性体８の圧縮に伴い、上記縦方向の間隙（Ｇｂ）が消滅して、上記制限部７６により上記荷重を支持（非弾性支持）しかつ上記弾性体８の圧縮を制限する構成である。
ここで、上記圧縮制限部材は、例えば天板部と制限部等からなる形態、或いは制限部のみからなる形態、例えば制限部を筒状に形成し内部に弾性体を収納した形態等がある。 Further, in the floor structure according to the present invention, as the compression limiting member 10, a limiting portion 76 made of an inelastic material is vertically formed and arranged in the vicinity of the elastic body 8, and the vertical length of the limiting portion 76 is provided. Is shorter than the vertical length of the elastic body 8 to form a vertical gap (Gb) between the two, and the vertical gap (Gb) disappears as the elastic body 8 is compressed by the load. Then, the limiting portion 76 supports the load (inelastic support) and limits the compression of the elastic body 8.
Here, the compression limiting member includes, for example, a form including a top plate portion and a limiting portion, or a form consisting of only the limiting portion, for example, a form in which the limiting portion is formed in a tubular shape and an elastic body is housed inside.

本発明に係る床構造は、上記床材１６との間の間隙（Ｇａ）と上記縦方向の間隙（Ｇｂ）とを、同じ程度の間隔に形成した構成である。
ここで、例えば、上記荷重により、上記縦方向の間隙（Ｇｂ）が消滅し、さらに上記床材１６との間の間隙（Ｇａ）も消滅したときには、上記第二の大引材（Ａ）６ａと上記第二の大引材（Ｂ）６ｂとにより上記床材１６を非弾性支持することが可能となる。
なお、上記非弾性支持とは、第二の大引材（非弾性材）及び非弾性材からなる制限部７６等により、床材１６からの荷重を、弾性材を介さないで支持する形態をいう。 The floor structure according to the present invention has a structure in which a gap (Ga) between the floor material 16 and the gap (Gb) in the vertical direction are formed at the same intervals.
Here, for example, when the gap (Gb) in the vertical direction disappears due to the load and the gap (Ga) with the floor material 16 also disappears, the second large pulling material (A) 6a And the second large pulling material (B) 6b make it possible to non-elastically support the floor material 16.
The inelastic support is a form in which the load from the floor material 16 is supported without the elastic material by the limiting portion 76 or the like made of the second large pulling material (inelastic material) and the inelastic material. Say.

本発明に係る床構造は、上記第二の大引材（Ｂ）６ｂと上記第二の大引材（Ａ）６ａとを、交互に配置した構成である。
本発明に係る床構造は、上記第二の大引材（Ａ）６ａと上記床材１６との間に、緩衝材１５を介在させた構成である。
なお、上記緩衝材１５を上記第二の大引材（Ａ）６ａの上部に設けた場合、上記間隙（Ｇａ）は上記緩衝材１５と上記床材１６との間に形成される。 The floor structure according to the present invention has a configuration in which the second large pulling material (B) 6b and the second large pulling material (A) 6a are alternately arranged.
The floor structure according to the present invention has a structure in which a cushioning material 15 is interposed between the second large pulling material (A) 6a and the floor material 16.
When the cushioning material 15 is provided above the second large pulling material (A) 6a, the gap (Ga) is formed between the cushioning material 15 and the floor material 16.

また、本発明に係る床構造は、上記床材１６として、上記第二の大引材６の上側に、これらと交差しかつ所定間隔をおいて配置される根太材１７、及びこれら根太材１７の上部に配置される床板材１８を有する構成である。
本発明に係る床構造は、上記第一の大引材４と上記第二の大引材（Ａ）６ａとの間に、十字状の固定プレート１４を介在させ、両大引材同士を固定した構成である。 Further, in the floor structure according to the present invention, as the floor material 16, the joist material 17 which is arranged on the upper side of the second large pulling material 6 so as to intersect with the floor material 16 and at a predetermined interval, and the joist material 17 thereof. It is a configuration having a floor board material 18 arranged on the upper part of the.
In the floor structure according to the present invention, a cross-shaped fixing plate 14 is interposed between the first large pulling material 4 and the second large pulling material (A) 6a to fix both large pulling materials to each other. It is a configuration that has been made.

本発明に係る床構造によれば、第一の大引材、第二の大引材、及び床材を有し、第二の大引材の内の一部の第二の大引材（Ｂ）と、第一の大引材との間等に弾性体を介在させ、第二の大引材（Ｂ）により床材を支持させ、第二の大引材の内の残部の第二の大引材（Ａ）と、床材との間に間隙を形成した構成としたから、耐荷重性能及び弾力性能が十分に発揮され、また作業が迅速且つ楽に行えて施工性に優れ、加えて大引材等の材料の生産性にも優れるという効果を奏する。 According to the floor structure according to the present invention, there is a first large pulling material, a second large pulling material, and a floor material, and a part of the second large pulling material (2nd large pulling material). An elastic body is interposed between B) and the first large pulling material, the floor material is supported by the second large pulling material (B), and the second of the remaining part of the second large pulling material is supported. Since a gap is formed between the large pulling material (A) and the floor material, the load bearing performance and elasticity performance are sufficiently exhibited, and the work can be performed quickly and easily, and the workability is excellent. It also has the effect of excellent productivity of materials such as large pulling materials.

また、本発明に係る床構造によれば、支持部材と第一の大引材との間に弾性部材を介在させた構成としたから、全ての大引材及び床材等に対して、床上等からの衝撃等が有効に緩和されるという効果がある。 Further, according to the floor structure according to the present invention, since the elastic member is interposed between the support member and the first large pulling material, all the large pulling materials and the flooring materials are on the floor. It has the effect of effectively mitigating the impact from the above.

本発明に係る床構造によれば、圧縮制限部材として制限部を弾性体の近傍に配置し、両者間に形成した間隙が荷重により消滅したときは、制限部により荷重を支持しかつ圧縮を制限する構成としたから、重荷重が加わったときには、床材は全ての第二の大引材及び圧縮制限部材により支持（非弾性支持）可能となり、高い耐荷重性を有するという効果がある。 According to the floor structure according to the present invention, a limiting portion is arranged in the vicinity of the elastic body as a compression limiting member, and when the gap formed between the two is extinguished by the load, the load is supported by the limiting portion and the compression is limited. Therefore, when a heavy load is applied, the floor material can be supported (inelastic support) by all the second large pulling materials and compression limiting members, and has an effect of having a high load capacity.

本発明に係る床構造によれば、床材との間の間隙と縦方向の間隙とを、同じ程度の間隔に形成したから、全ての第二の大引材により床材を非弾性支持することが可能となり、重荷重に対して有効に耐荷重性能が発揮されるという効果がある。 According to the floor structure according to the present invention, since the gap between the floor material and the vertical gap are formed at the same degree of spacing, the floor material is inelastically supported by all the second large pulling materials. This has the effect of effectively exhibiting load bearing performance against heavy loads.

また、本発明に係る床構造によれば、第二の大引材（Ｂ）と第二の大引材（Ａ）とを交互に配置した構成としたから、全ての第二の大引材により床材支持がバランス良く行えるという効果がある。 Further, according to the floor structure according to the present invention, since the second large pulling material (B) and the second large pulling material (A) are alternately arranged, all the second large pulling materials are arranged. This has the effect of supporting the floor material in a well-balanced manner.

実施の形態に係る床構造を示す図である。It is a figure which shows the floor structure which concerns on embodiment. 実施の形態に係り、床構造の下地部分を示す図である。It is a figure which shows the base part of the floor structure which concerns on embodiment. 緩衝制限具として、弾性体、圧縮制限部材、及び受板材等を示す図（ａ）、（ｂ）、（ｃ）である。It is a figure (a), (b), (c) which shows an elastic body, a compression limiting member, a receiving plate material and the like as a buffer limiting tool. （ａ）は固定プレートを示す図、（ｂ）は固定プレートを用いて第一の大引材と第二の大引材（Ａ）とを固定した状態を示す図である。(A) is a diagram showing a fixed plate, and (b) is a diagram showing a state in which the first large pulling material and the second large pulling material (A) are fixed by using the fixing plate. 実施の形態に係り、第一の大引材の上部に緩衝制限具及び第二の大引材（Ｂ）を取り付けた状態を示す部分図である。FIG. 5 is a partial view showing a state in which a buffer limiting tool and a second large pulling material (B) are attached to the upper part of the first large pulling material according to the embodiment. 実施の形態に係り、床構造の下地部分の平面を示す図である。It is a figure which shows the plane of the base part of the floor structure which concerns on embodiment. 他の形態に係る床構造を示す図である。It is a figure which shows the floor structure which concerns on other forms.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は、実施の形態に係る床構造を示したものである。この床構造は、体育館、多目的ホール、その他公共の施設等、弾力性能が要求されまた過大な荷重が加わる施設等において採用することができる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the floor structure according to the embodiment. This floor structure can be adopted in gymnasiums, multipurpose halls, other public facilities, and other facilities that require elasticity and are subject to excessive loads.

上記床構造は、支持部材２、第一の大引材４、第二の大引材６，６ａ，６ｂ、弾性体８、圧縮制限部材１０、受板材１２、固定プレート１４、緩衝材１５、床材１６（根太材１７及び床板材１８等）等を有する。
ここで、上記第二の大引材６は、その内の一部の第二の大引材（Ｂ）６ｂと、残部の第二の大引材（Ａ）６ａに分けられる。
また、上記第二の大引材（Ｂ）６ｂは弾性体８を介在させて使用する。 The floor structure includes a support member 2, a first large pulling material 4, a second large pulling material 6, 6a, 6b, an elastic body 8, a compression limiting member 10, a receiving plate material 12, a fixing plate 14, and a cushioning material 15. It has a floor material 16 (joist material 17, floor board material 18, etc.) and the like.
Here, the second large pulling material 6 is divided into a part of the second large pulling material (B) 6b and the remaining second large pulling material (A) 6a.
Further, the second large pulling material (B) 6b is used with an elastic body 8 interposed therebetween.

図２に示すように、上記支持部材２は、支持台２０、支持ボルト２２、ナット（固定）２３、ナット（可動）２４、ワッシャ２５、大引材の保持部位である大引保持部２６、弾性部材３０及びボルトとナットからなる止着具３２を有する。
大引保持部２６は断面Ｕ字状であり、内側の底部２７（及び左右の側面部２８）には板状の弾性部材３０が取り付けられている。また、大引保持部２６の底部２７から停止片２９が上向きに屈曲形成され、弾性部材３０の圧縮を制限しこれを保護している。
支持部材２は、ナット２３，２４及び支持ボルト２２の調節により、大引保持部２６の高さを調整することができる。 As shown in FIG. 2, the support member 2 includes a support base 20, a support bolt 22, a nut (fixed) 23, a nut (movable) 24, a washer 25, and a large pull holding portion 26 which is a holding portion of a large pull material. It has an elastic member 30 and a fastener 32 composed of a bolt and a nut.
The large pull holding portion 26 has a U-shaped cross section, and a plate-shaped elastic member 30 is attached to the inner bottom portion 27 (and the left and right side surface portions 28). Further, the stop piece 29 is bent upward from the bottom 27 of the large pull holding portion 26 to limit the compression of the elastic member 30 and protect it.
The height of the large pull holding portion 26 can be adjusted in the support member 2 by adjusting the nuts 23 and 24 and the support bolt 22.

上記第一の大引材４は断面四角形状（例えば正方形）で、上板部４０、左右の側板部４２及び下板部４４からなる角型鋼管である。
上記第二の大引材（Ａ）６ａは断面四角形状（例えば正方形）で、上板部４６、左右の側板部４８及び下板部５０からなる角型鋼管である。
また、上記第二の大引材（Ｂ）６ｂは断面四角形状（例えば正方形）で、上板部５２、左右の側板部５４及び下板部５６からなる角型鋼管である。
上記第一の大引材４、及び第二の大引材６として他に、角型鋼管（断面長方形）、Ｈ型
（Ｉ型）鋼材、断面Ｃ状鋼材、断面ハット状鋼材等の使用が可能である。 The first large drawing member 4 has a square cross section (for example, a square), and is a square steel pipe composed of an upper plate portion 40, left and right side plate portions 42, and a lower plate portion 44.
The second large pulling material (A) 6a has a square cross section (for example, a square), and is a square steel pipe composed of an upper plate portion 46, left and right side plate portions 48, and a lower plate portion 50.
The second large pulling material (B) 6b has a square cross section (for example, a square), and is a square steel pipe composed of an upper plate portion 52, left and right side plate portions 54, and a lower plate portion 56.
In addition to the first large drawing material 4 and the second large drawing material 6, square steel pipes (rectangular cross section), H type (I type) steel materials, C-shaped steel cross sections, hat-shaped steel cross sections, etc. can be used. It is possible.

また、ここでは例えば、第一の大引材４を、角型鋼管（縦（外径、以下同様）７５ｍｍ、横（外径、以下同様）７５ｍｍ、板厚２．３ｍｍ（又は３．２ｍｍ））、第二の大引材（Ａ）６ａを、角型鋼管（縦７５ｍｍ、横７５ｍｍ、板厚２．３ｍｍ（又は３．２ｍｍ））、第二の大引材（Ｂ）６ｂを、角型鋼管（縦６０ｍｍ、横６０ｍｍ、板厚２．３ｍｍ（又は３．２ｍｍ））、とし、集中荷重（３ｔ（トン）、５ｔ等）に耐えられるよう使い分けしている。
また、第二の大引材（Ｂ）６ｂの高さ幅（縦）を、第二の大引材（Ａ）６ａの高さ幅（縦）より１５ｍｍ（７５−６０ｍｍ）小さくしている。 Further, here, for example, the first large pulling material 4 is a square steel pipe (length (outer diameter, the same applies hereinafter) 75 mm, width (outer diameter, the same applies hereinafter) 75 mm, plate thickness 2.3 mm (or 3.2 mm)). ), The second large pulling material (A) 6a is a square steel pipe (length 75 mm, width 75 mm, plate thickness 2.3 mm (or 3.2 mm)), and the second large pulling material (B) 6b is square. The type steel pipe (length 60 mm, width 60 mm, plate thickness 2.3 mm (or 3.2 mm)) is used properly so that it can withstand a concentrated load (3 tons, 5 tons, etc.).
Further, the height width (vertical) of the second large pulling material (B) 6b is 15 mm (75-60 mm) smaller than the height width (vertical) of the second large pulling material (A) 6a.

図３に示すように、上記弾性体８は、上面部６０、前後左右の側面部６２、及び下面部６４からなる六面体状であり、上面部６０と下面部６４は面同士が平行に形成されている。
この弾性体８は、ゴム等の弾性材からなり、ここではゴム硬度４０°（又は３５°〜４５°）の天然ゴムを使用した。なお、弾性体８のゴム硬度は、上記支持部材２の弾性部材３０のゴム硬度と比べて、軟質のもの、或いは同じゴム硬度のものを使用する。
弾性体８のゴム硬度を、弾性部材３０のゴム硬度より軟らかくすることで、床上の運動者等に対する床弾力性能（第二の大引材（Ｂ）６ｂによる）が高くなる。一方、弾性部材３０のゴム硬度を硬く（弾性体８のゴム硬度より）することで、弾性支持（第一の大引材４による）において高い耐荷重性能が得られ、床上の重量物等に対しても有効に衝撃の緩和等が図れる。 As shown in FIG. 3, the elastic body 8 has a hexahedral shape including an upper surface portion 60, front, rear, left and right side surface portions 62, and a lower surface portion 64, and the upper surface portion 60 and the lower surface portion 64 are formed with their surfaces parallel to each other. ing.
The elastic body 8 is made of an elastic material such as rubber, and here, natural rubber having a rubber hardness of 40 ° (or 35 ° to 45 °) is used. The rubber hardness of the elastic body 8 is softer than that of the elastic member 30 of the support member 2, or has the same rubber hardness.
By making the rubber hardness of the elastic body 8 softer than the rubber hardness of the elastic member 30, the floor elasticity performance (according to the second large pulling material (B) 6b) for an exerciser or the like on the floor is increased. On the other hand, by making the rubber hardness of the elastic member 30 harder (than the rubber hardness of the elastic body 8), high load-bearing performance can be obtained in elastic support (due to the first large pulling material 4), and it can be used for heavy objects on the floor. On the other hand, the impact can be effectively mitigated.

上記圧縮制限部材１０は、鋼材或いは金属等の非弾性材からなる。圧縮制限部材１０は、断面コ（下向きに開口）字状で、長方形状の天板部７４と、左右部からそれぞれ下方に向けて縦に形成された制限部７６からなる。圧縮制限部材１０の天板部７４の下部側に、弾性体８を配置する。また、天板部７４の長尺方向の各端部（開放端側）近傍には、それぞれ２箇所にネジ孔７８が形成されている。 The compression limiting member 10 is made of a non-elastic material such as a steel material or a metal. The compression limiting member 10 has a U-shaped cross section (opening downward), and includes a rectangular top plate portion 74 and a limiting portion 76 formed vertically downward from each of the left and right portions. The elastic body 8 is arranged on the lower side of the top plate portion 74 of the compression limiting member 10. Further, screw holes 78 are formed at two locations in the vicinity of each end (open end side) of the top plate portion 74 in the elongated direction.

ここで、圧縮制限部材１０の制限部７６において、弾性体８の圧縮を制限する縦（上下間）の長さ（Ｌａ）を、弾性体８の上面部６０と下面部６４間の縦の長さ（高さ）（Ｌｂ）より短く（Ｌａ＜Ｌｂ）し、両者間、即ち制限部７６の下端部７７と弾性体８の下面部６４（受板材１２の表面）との間に間隙（Ｇｂ）（＝Ｌｂ−Ｌａ）を形成する。このように、制限部７６は、弾性体８の高さ（縦幅）の範囲内に形成される部位になる。
そして、弾性体８が所定寸法圧縮されると、圧縮後の弾性体８の縦の長さ（Ｌｂ）が、圧縮制限部材１０の制限部７６の縦の長さ（Ｌａ）と同じになり、上記間隙（Ｇｂ）が消滅する。この間隙（Ｇｂ）の消滅（＝０）により、弾性体８の圧縮が制限され、荷重を圧縮制限部材１０の制限部７６で支持（非弾性支持）する形態に切りかわる。
圧縮制限部材１０により、弾性体８の過度の圧縮が防止（破損等防止）でき、また荷重を直接制限部７６で支持することから耐荷重強度が確保できる。 Here, in the limiting portion 76 of the compression limiting member 10, the vertical (upper and lower) length (La) that limits the compression of the elastic body 8 is set to the vertical length between the upper surface portion 60 and the lower surface portion 64 of the elastic body 8. It is shorter (La <Lb) than the (height) (Lb), and there is a gap (Gb) between the two, that is, between the lower end 77 of the limiting portion 76 and the lower surface 64 (the surface of the receiving plate member 12) of the elastic body 8. ) (= Lb-La) is formed. In this way, the limiting portion 76 becomes a portion formed within the height (vertical width) of the elastic body 8.
Then, when the elastic body 8 is compressed by a predetermined dimension, the vertical length (Lb) of the elastic body 8 after compression becomes the same as the vertical length (La) of the limiting portion 76 of the compression limiting member 10. The gap (Gb) disappears. Due to the disappearance (= 0) of this gap (Gb), the compression of the elastic body 8 is restricted, and the form is switched to a form in which the load is supported (inelastically supported) by the limiting portion 76 of the compression limiting member 10.
The compression limiting member 10 can prevent excessive compression of the elastic body 8 (prevent damage, etc.), and since the load is directly supported by the limiting portion 76, the load bearing strength can be secured.

圧縮制限部材１０（或いは制限部７６）として、他に天板付（或いは天板無し）の筒形状（内部に弾性体８収納）、柱形状（弾性体８の中央等に配置等）、板形状或いは塊形状など種々の形態がある。要は、圧縮制限部材１０（制限部７６）は、弾性体８に加わる荷重による圧縮を制限するものであるから、非弾性材（鋼、金属等の硬質材）で形成された縦（上下向）形状の部位を有する部材であれば、これを弾性体８の近傍（外側、内側等）に配置することで圧縮制限機能を発揮できる。
また、圧縮制限部材１０として、例えば筒形状のもの等は、制限部７６のみで構成される。
上記受板材１２は長方形状の鋼板からなり、長尺側の端部近傍には、それぞれネジ孔７９が形成されている。この受板材１２は、圧縮制限部材１０（制限部７６）からの荷重を支え、また第一の大引材４の上面部を保護する。 Other compression limiting members 10 (or limiting portion 76) include a tubular shape (with an elastic body 8 stored inside), a pillar shape (arranged in the center of the elastic body 8, etc.), and a plate shape. Alternatively, there are various forms such as a lump shape. In short, since the compression limiting member 10 (restricting portion 76) limits compression due to the load applied to the elastic body 8, it is vertically (vertically oriented) formed of an inelastic material (hard material such as steel or metal). ) If the member has a shaped portion, the compression limiting function can be exhibited by arranging the member in the vicinity (outside, inside, etc.) of the elastic body 8.
Further, the compression limiting member 10, for example, a tubular one, is composed of only the limiting portion 76.
The receiving plate material 12 is made of a rectangular steel plate, and screw holes 79 are formed in the vicinity of the end portions on the long side. The receiving plate member 12 supports the load from the compression limiting member 10 (restricting portion 76) and also protects the upper surface portion of the first large drawing member 4.

図４（ａ）（ｂ）に示すように、上記固定プレート１４は鋼板からなり、中央から四方（十字状）に延出部８０が形状され、各延出部８０の端部近傍にはそれぞれ２箇所にネジ孔８２が形成されている。
固定プレート１４は、第二の大引材（Ａ）６ａとこれと直交する第一の大引材４間に介在させ、螺子３４を用いて固定プレート１４の一方の延出部８０，８０を第二の大引材（Ａ）６ａの下板部５０に取り付ける。これと同様に、固定プレート１４の他方の延出部８０，８０を第一の大引材４の上板部４０に取り付け、大引材同士を固定する。 As shown in FIGS. 4A and 4B, the fixing plate 14 is made of a steel plate, and extension portions 80 are formed in all directions (cross shape) from the center, and each extension portion 80 is located near an end portion thereof. Screw holes 82 are formed at two locations.
The fixing plate 14 is interposed between the second large pulling material (A) 6a and the first large pulling material 4 orthogonal to the second large pulling material (A), and one of the extending portions 80, 80 of the fixing plate 14 is formed by using a screw 34. It is attached to the lower plate portion 50 of the second large drawing material (A) 6a. Similarly, the other extending portions 80, 80 of the fixing plate 14 are attached to the upper plate portion 40 of the first large pulling member 4, and the large pulling members are fixed to each other.

緩衝材１５は、ゴム、合成樹脂等の弾性材からなる。ここでは緩衝材１５として、片面粘着剤が塗布されたゴム性テープ材（厚さ１〜３ｍｍ、幅及び長さは第二の大引材（Ａ）６ａと床材１６とが当たる範囲）からなる、弾性のシート材を使用した。この緩衝材１５は、床材１６からの衝撃を防止し、また軋み音の発生を防止する。 The cushioning material 15 is made of an elastic material such as rubber or synthetic resin. Here, as the cushioning material 15, the rubber tape material coated with the single-sided adhesive (thickness 1 to 3 mm, width and length are in the range where the second large pulling material (A) 6a and the floor material 16 hit). An elastic sheet material was used. The cushioning material 15 prevents the impact from the floor material 16 and also prevents the generation of squeaking noise.

根太材１７は、鋼板を断面ハット状に屈曲成形したもので、頂部８４、左右の側部８６、及び左右に延びるフランジ部８８からなる。根太材１７として断面ハット状の各部は、例えば、凸部高さ２９ｍｍ、凸部幅４０ｍｍ、全幅（フランジ部含）７４ｍｍのものが使用できる。
床板材１８は、下貼材（捨板）として構造用合板材９０、仕上げ材としてフローリング材９２が用いられる。 The joist 17 is formed by bending a steel plate into a hat-like cross section, and includes a top portion 84, left and right side portions 86, and flange portions 88 extending to the left and right. As the joist material 17, each portion having a hat-shaped cross section can be used, for example, one having a convex portion height of 29 mm, a convex portion width of 40 mm, and a total width (including a flange portion) of 74 mm.
As the floor board material 18, a structural plywood material 90 is used as an underlaying material (scrap board), and a flooring material 92 is used as a finishing material.

さて、ここでは図３に示すように、上記弾性体８、圧縮制限部材１０及び受板材１２を用いて緩衝制限具１３を構成する。
この緩衝制限具１３は、圧縮制限部材１０と受板材１２とを十字状に形成し、圧縮制限部材１０の天板部７４の下部側に弾性体８を配置し、さらに弾性体８の下部に受板材１２を配置し、これにより弾性体８及び制限部７６からの荷重を受板材１２で受ける形態である。弾性体８と天板部７４間及び受板材１２間は、それぞれ接着剤等で固定し、圧縮制限部材１０、弾性体８及び受板材１２の三者を一体化する。 By the way, here, as shown in FIG. 3, the buffer limiting tool 13 is configured by using the elastic body 8, the compression limiting member 10, and the receiving plate material 12.
In the buffer limiting tool 13, the compression limiting member 10 and the receiving plate member 12 are formed in a cross shape, the elastic body 8 is arranged on the lower side of the top plate portion 74 of the compression limiting member 10, and the elastic body 8 is further placed on the lower portion of the elastic body 8. The receiving plate material 12 is arranged so that the receiving plate material 12 receives the load from the elastic body 8 and the limiting portion 76. The elastic body 8 and the top plate portion 74 and the receiving plate material 12 are fixed with an adhesive or the like, and the compression limiting member 10, the elastic body 8 and the receiving plate material 12 are integrated.

また、緩衝制限具１３の圧縮制限部材１０は、制限部７６の下端部７７と受板材１２との間に間隙（Ｇｂ）が設けてある。
この間隙（Ｇｂ）により、床からの荷重が小さい場合、緩衝制限具１３に加わる荷重に対して弾性体８は弾性作用を発揮する。しかし荷重が大きくなり、弾性体８がさらに圧縮されると、やがて圧縮制限部材１０の制限部７６の下端部７７が受板材１２の上面部に当接し、緩衝制限具１３は制限部７６により直接荷重を支持（非弾性支持）する形態に切りかわる。
このように緩衝制限具１３は、床上からの荷重が小さいと（運動者等）これを弾性支持し、荷重が大きいと（重機等）これを非弾性支持する等、荷重の大きさに対して機能が変化する。 Further, the compression limiting member 10 of the buffer limiting tool 13 is provided with a gap (Gb) between the lower end portion 77 of the limiting portion 76 and the receiving plate material 12.
Due to this gap (Gb), when the load from the floor is small, the elastic body 8 exerts an elastic action against the load applied to the buffer limiting tool 13. However, when the load becomes large and the elastic body 8 is further compressed, the lower end portion 77 of the limiting portion 76 of the compression limiting member 10 eventually comes into contact with the upper surface portion of the receiving plate member 12, and the buffer limiting tool 13 is directly moved by the limiting portion 76. It switches to a form that supports the load (inelastic support).
In this way, the buffer limiting tool 13 elastically supports the load from the floor when the load is small (exercises, etc.), and inelastically supports it when the load is large (heavy machinery, etc.). The function changes.

さらに、この実施の形態では、第二の大引材６の使用形態として、そのままの状態で使用する第二の大引材（Ａ）６ａと、上記緩衝制限具１３（又は弾性体８）を介在させて使用する第二の大引材（Ｂ）６ｂとの二つの使用形態をとる。
この場合、例えば第二の大引材（Ａ）６ａと第二の大引材（Ｂ）６ｂとを交互に配置する等、第二の大引材（Ｂ）６ｂ同士の間に第二の大引材（Ａ）６ａが配置されるようにする。 Further, in this embodiment, as the usage mode of the second large pulling material 6, the second large pulling material (A) 6a to be used as it is and the buffer limiting tool 13 (or elastic body 8) are used. It takes two forms of use with the second large pulling material (B) 6b used by interposing.
In this case, for example, the second large pulling material (A) 6a and the second large pulling material (B) 6b are alternately arranged, and the second large pulling material (B) 6b is placed between the second large pulling materials (B) 6b. The large pulling material (A) 6a is arranged.

第二の大引材（Ｂ）６ｂ上の床材１６を弾性支持する場合、第二の大引材（Ｂ）６ｂの下部、又は上部に、上記緩衝制限具１３（又は弾性体８）を介在させる形態がある。この場合、第二の大引材（Ｂ）６ｂに緩衝制限具１３等を介在させることから、第二の大引材（Ｂ）６ｂの高さ幅（Ｈｂ）は、第二の大引材（Ａ）６ａの高さ幅（Ｈａ）より小さい（Ｈｂ＜Ｈａ）ものを用いる。
これら両第二の大引材（Ａ），（Ｂ）の高さの差（＝Ｈａ−Ｈｂ）は、１５ｍｍ、或いは１０〜２０ｍｍの範囲が、両者のバランス及び弾性体の高さ等との関係上好ましい。
また、弾性体８の高さ（縦（上面部と下面部間）の長さ）は、２０ｍｍ、１５〜２５ｍｍ或いは１０〜３０ｍｍの範囲が弾性効果及び強度等の点で好ましい。 When the floor material 16 on the second large pulling material (B) 6b is elastically supported, the buffer limiting tool 13 (or elastic body 8) is placed on the lower or upper part of the second large pulling material (B) 6b. There is a form to intervene. In this case, since the buffer limiting tool 13 or the like is interposed in the second large pulling material (B) 6b, the height width (Hb) of the second large pulling material (B) 6b is the second large pulling material. (A) The one having a height width (Ha) smaller than 6a (Hb <Ha) is used.
The height difference (= Ha-Hb) between the two second large pulling materials (A) and (B) is in the range of 15 mm or 10 to 20 mm with the balance between the two and the height of the elastic body. It is preferable in relation to it.
The height of the elastic body 8 (length (between the upper surface portion and the lower surface portion)) is preferably in the range of 20 mm, 15 to 25 mm, or 10 to 30 mm in terms of elastic effect, strength, and the like.

また、この形態では、第二の大引材（Ｂ）６ｂは常に床材１６を支持する状態とし、第二の大引材（Ａ）６ａとその上の床材１６との間には、間隙（Ｇａ）を設ける。
この間隙（Ｇａ）は、第二の大引材（Ａ）６ａの上部（但し、緩衝材１５を設けた場合はこの上部）とその上側の床材１６（根太材１７等）との間に設ける。上記間隙（Ｇａ）により、弾性体８の圧縮の程度が小さい場合は、第二の大引材（Ｂ）６ｂのみで床（床材１６）を支持（弾性支持）する構造が可能となる。 Further, in this form, the second large pulling material (B) 6b is always in a state of supporting the floor material 16, and between the second large pulling material (A) 6a and the floor material 16 above it, A gap (Ga) is provided.
This gap (Ga) is formed between the upper part of the second large pulling material (A) 6a (however, this upper part when the cushioning material 15 is provided) and the floor material 16 (joist material 17, etc.) above the upper part. Provide. Due to the gap (Ga), when the degree of compression of the elastic body 8 is small, a structure in which the floor (floor material 16) is supported (elastically supported) by only the second large pulling material (B) 6b becomes possible.

ここで、先ず、第二の大引材（Ｂ）６ｂに弾性体８のみを介在させた形態について説明する。
このとき、床上からの荷重が小さいと（床を人のみが運動等で使用等）、第二の大引材（Ｂ）６ｂ及び弾性体８のみで床材１６を支持（弾性支持）する形態となる。
さらに、荷重が大きくなると（床を重機等が移動中等）、第二の大引材（Ｂ）６ｂに介在した弾性体８が圧縮され、これが上記第二の大引材（Ａ）６ａと床材１６間の間隙（Ｇａ）以上になると、第二の大引材（Ｂ）６ｂ（及び弾性体８）と第二の大引材（Ａ）６ａとにより、床材１６（根太材１７等）を支持する形態となる。
この場合、第二の大引材（Ｂ）６ｂは弾性体８とともに床材１６を弾性支持し、また第二の大引材（Ａ）６ａは床材１６を非弾性支持し、これら両者の支持により耐荷重性が高まる。 Here, first, a form in which only the elastic body 8 is interposed in the second large pulling material (B) 6b will be described.
At this time, if the load from the floor is small (only a person uses the floor for exercise, etc.), the floor material 16 is supported (elastically supported) only by the second large pulling material (B) 6b and the elastic body 8. It becomes.
Further, when the load becomes large (heavy machinery or the like is moving on the floor, etc.), the elastic body 8 interposed in the second large pulling material (B) 6b is compressed, and this becomes the second large pulling material (A) 6a and the floor. When the gap (Ga) or more between the materials 16 is reached, the floor material 16 (joist material 17 etc.) is formed by the second large pulling material (B) 6b (and elastic body 8) and the second large pulling material (A) 6a. ) Is supported.
In this case, the second large pulling material (B) 6b elastically supports the floor material 16 together with the elastic body 8, and the second large pulling material (A) 6a elastically supports the floor material 16 of both. The support increases the load bearing capacity.

次に、第二の大引材（Ｂ）６ｂに上記緩衝制限具１３を介在させた形態について説明する。この緩衝制限具１３は、弾性体８の近傍に圧縮制限部材１０（金属、鋼等の非弾性材）を配置し、弾性体８の圧縮を制限する。
また、通常、上記第二の大引材（Ａ）６ａに係る床材１６との間の間隙（Ｇａ）と、上記緩衝制限具１３に係る制限部７６の下方の間隙（Ｇｂ）とは、略同じ寸法（Ｇａ＝Ｇｂ）とする。上記間隙を同じとすることで、第二の大引材（Ａ）６ａと第二の大引材（Ｂ）６ｂとで、同時（又は略同時）に床材１６を支持（非弾性支持）することができ、耐荷重性が高く堅くて丈夫な支持形態がとれる。 Next, a form in which the buffer limiting tool 13 is interposed in the second large pulling material (B) 6b will be described. The buffer limiting tool 13 arranges a compression limiting member 10 (a non-elastic material such as metal or steel) in the vicinity of the elastic body 8 to limit the compression of the elastic body 8.
Further, usually, the gap (Ga) between the floor material 16 related to the second large pulling material (A) 6a and the gap (Gb) below the limiting portion 76 related to the buffer limiting tool 13 are defined as each other. It has substantially the same dimensions (Ga = Gb). By making the above gap the same, the second large pulling material (A) 6a and the second large pulling material (B) 6b support the floor material 16 at the same time (or substantially at the same time) (non-elastic support). It can take a support form that is strong and strong with high load resistance.

この形態では、床上からの荷重が小さい状態では、第二の大引材（Ｂ）６ｂ及び緩衝制限具１３に係る弾性体８により床材１６を支持（弾性支持）し、このとき第二の大引材（Ａ）６ａ上の間隙（Ｇａ）（及び間隙（Ｇｂ））は消滅していない。
そして、床上から大きな荷重（重機の移動等）が加わると、弾性体８の圧縮により制限部７６下の間隙（Ｇｂ）が消滅（間隙零）すると、略同時に第二の大引材（Ａ）上の間隙（Ｇａ）も消滅する。
これにより、第二の大引材（Ａ）６ａと、第二の大引材（Ｂ）６ｂ及び圧縮制限部材１０の三者で、同時に床材１６（根太材１７等）を支持（非弾性支持）する形態が可能となり、重荷重に対してバランス良く床材１６が支持され、また重荷重に対する耐荷重性能も高くなる。
また、第二の大引材（Ｂ）６ｂは、上記弾性体８による支持（弾性反発力）に加えて、圧縮制限部材１０による支持（非弾性支持）が加わり、第二の大引材（Ｂ）６ｂを弾性体８のみで弾性支持する場合と比べて、耐荷重性が高くなる。 In this embodiment, when the load from the floor is small, the floor material 16 is supported (elastically supported) by the second large pulling material (B) 6b and the elastic body 8 related to the buffer limiting tool 13, and at this time, the second The gap (Ga) (and gap (Gb)) on the large pulling material (A) 6a has not disappeared.
Then, when a large load (movement of heavy machinery, etc.) is applied from above the floor, the gap (Gb) under the limiting portion 76 disappears (gap zero) due to the compression of the elastic body 8, and the second large pulling material (A) is substantially simultaneously provided. The upper gap (Ga) also disappears.
As a result, the second large pulling material (A) 6a, the second large pulling material (B) 6b, and the compression limiting member 10 simultaneously support the floor material 16 (joist material 17, etc.) (inelasticity). The floor material 16 can be supported in a well-balanced manner against a heavy load, and the load-bearing performance against a heavy load is also improved.
Further, in the second large pulling material (B) 6b, in addition to the support by the elastic body 8 (elastic repulsive force), the support by the compression limiting member 10 (inelastic support) is added, and the second large pulling material (B) 6b is supported by the second large pulling material (B). B) The load bearing capacity is higher than that in the case where 6b is elastically supported only by the elastic body 8.

なお、実際の現場では、上記間隙（Ｇａ）と間隙（Ｇｂ）との両間隙について、両者を同じ（Ｇａ＝Ｇｂ）とする以外に、多少の差を設ける場合がある。これは現場において、床を支える大引材などの各部材の撓み等を考慮し、これら各部材について、荷重負荷等に対するバランスを適正に保つためである。
ここで、例えば、第二の大引材（Ａ）６ａに係る間隙（Ｇａ）を間隙（Ｇｂ）より少し小さく（Ｇａ＜Ｇｂ）設定する。この間隙の差により、荷重が大きくなると、先に間隙（Ｇａ）が消滅し、主に第二の大引材（Ａ）６ａ同士で床材１６からの荷重を支持（非弾性支持）し、荷重がさらに大きくなれば、床材１６（根太材１７等）の撓みの影響等より、やがて床材１６は、第二の大引材（Ａ）６ａ、第二の大引材（Ｂ）６ｂ及び緩衝制限具１３（圧縮制限部材１０）の三者により支持（非弾性支持）される。
このため、間隙の差にもよるが、荷重は第二の大引材（Ａ）６ａに対して、より大きく加わり、一方、第二の大引材（Ｂ）６ｂに加わる荷重は多少軽減され、緩衝制限具１３等が保護される。 In the actual field, there may be some differences between the gap (Ga) and the gap (Gb) other than making them the same (Ga = Gb). This is to take into consideration the bending of each member such as the large pulling material that supports the floor at the site, and to maintain an appropriate balance of each member with respect to the load and the like.
Here, for example, the gap (Ga) related to the second large pulling material (A) 6a is set to be slightly smaller than the gap (Gb) (Ga <Gb). Due to this difference in the gap, when the load becomes large, the gap (Ga) disappears first, and the load from the floor material 16 is mainly supported (inelastic support) between the second large pulling members (A) 6a. If the load becomes even larger, the floor material 16 will eventually become the second large pulling material (A) 6a and the second large pulling material (B) 6b due to the influence of the bending of the floor material 16 (joist material 17 etc.). It is supported (inelastically supported) by the buffer limiting tool 13 (compression limiting member 10).
Therefore, although it depends on the difference in the gap, the load is applied more to the second large pulling material (A) 6a, while the load applied to the second large pulling material (B) 6b is slightly reduced. , The buffer limiting device 13 and the like are protected.

また、第二の大引材（Ｂ）６ｂで床材１６を弾性支持する形態には、第二の大引材（Ｂ）６ｂの上下部位以外に弾性体８を介在させる形態がある。
例えば、第二の大引材（Ｂ）６ｂの左右側部にそれぞれフランジ部を横向に突設し、これら各フランジ部にそれぞれ弾性体８を介在させる。この形態では、第二の大引材（Ａ）６ａの高さ幅（Ｈａ）と、第二の大引材（Ｂ）６ｂの高さ幅（Ｈｂ）とは同一（Ｈａ＝Ｈｂ）とすることができる。
そして、第二の大引材（Ｂ）６ｂの各フランジ部の下部に弾性体８を配置し、この弾性体８の下端部を、第二の大引材（Ｂ）６ｂの下部面より少し下方に突出させ（間隙（Ｇｃ）を形成）、第一の大引材４の上板部４０上に配置する。これにより、第二の大引材（Ａ）６ａの上側にも間隙（Ｇｄ）が形成され、またこの間隙（Ｇｄ）は上記間隙（Ｇｃ）と同じである。 Further, in the form in which the floor material 16 is elastically supported by the second large pulling material (B) 6b, there is a form in which the elastic body 8 is interposed in addition to the upper and lower portions of the second large pulling material (B) 6b.
For example, flange portions are projected laterally on the left and right side portions of the second large pulling material (B) 6b, and an elastic body 8 is interposed in each of these flange portions. In this embodiment, the height width (Ha) of the second large pulling material (A) 6a and the height width (Hb) of the second large pulling material (B) 6b are the same (Ha = Hb). be able to.
Then, the elastic body 8 is arranged under each flange portion of the second large pulling material (B) 6b, and the lower end portion of the elastic body 8 is slightly lower than the lower surface of the second large pulling material (B) 6b. It is projected downward (a gap (Gc) is formed) and placed on the upper plate portion 40 of the first large pulling material 4. As a result, a gap (Gd) is also formed on the upper side of the second large drawing material (A) 6a, and this gap (Gd) is the same as the above gap (Gc).

この場合、床上からの荷重が小さいと、第二の大引材（Ｂ）６ｂに取り付けた弾性体８のみで床材１６を支持（弾性支持）する。そして、さらに荷重が大きくなると、上記弾性体８が圧縮され、上記間隙（Ｇｃ）が消滅（Ｇｃ＝０）して、第二の大引材（Ｂ）６ｂの下面部が第一の大引材４の上板部４０に当接する。また同時に、上記間隙（Ｇｄ）も消滅する。
このとき、第二の大引材（Ｂ）６ｂと第二の大引材（Ａ）６ａとの両者で床材１６（根太材１７等）を支持（非弾性支持）する状態となり（Ｈａ＝Ｈｂより）、耐荷重性が高くなる。
この形態では、第二の大引材（Ｂ）６ｂ自体で弾性体８の圧縮を制限するため、圧縮制限部材等は不要である。 In this case, if the load from the floor is small, the floor material 16 is supported (elastically supported) only by the elastic body 8 attached to the second large pulling material (B) 6b. Then, when the load is further increased, the elastic body 8 is compressed, the gap (Gc) disappears (Gc = 0), and the lower surface portion of the second large pulling material (B) 6b becomes the first large pull. It comes into contact with the upper plate portion 40 of the material 4. At the same time, the gap (Gd) also disappears.
At this time, both the second large pulling material (B) 6b and the second large pulling material (A) 6a are in a state of supporting (non-elastic support) the floor material 16 (joist material 17, etc.) (Ha =). The load capacity is higher than that of Hb).
In this embodiment, since the second large pulling material (B) 6b itself limits the compression of the elastic body 8, a compression limiting member or the like is unnecessary.

次に、この実施の形態に係る床構造の施工及び配置形態等について説明する。
図１及び図６等に示すように、建物（体育館、ホール等の施設）の基礎面３上には、前後左右の所定位置にそれぞれ支持部材２を配置し、各列の前後方向の各支持部材２間に第一の大引材４を架設する。支持部材２は、止着具或いは接着剤等により支持台２０を基礎面３に固定する。そして、支持部材２の大引保持部２６に第一の大引材４を載置し、支持部材２の支持ボルト２２及びナット２４を操作し、大引保持部２６の高さを調整する。
なお、上記支持部材２としては、高床に用いる脚部（支持台２０、支持ボルト２２等）の長い形状、また低床に用いる脚部の短い形状、或いは脚部がなく、台座等で第一の大引材４を支持するのみの形状のもの等、何れも採用が可能である。 Next, the construction and arrangement form of the floor structure according to this embodiment will be described.
As shown in FIGS. 1 and 6, support members 2 are arranged at predetermined positions on the front, back, left, and right on the foundation surface 3 of a building (facility such as a gymnasium, hall, etc.), and each support in the front-rear direction of each row. The first large pulling material 4 is erected between the members 2. The support member 2 fixes the support base 20 to the foundation surface 3 with a fastener, an adhesive, or the like. Then, the first large pulling member 4 is placed on the large pulling holding portion 26 of the supporting member 2, and the support bolts 22 and nuts 24 of the supporting member 2 are operated to adjust the height of the large pulling holding portion 26.
The support member 2 has a long shape of legs (support base 20, support bolts 22, etc.) used for a high floor, a short shape of legs used for a low floor, or a pedestal or the like having no legs. Any of the shapes that only support the large pulling material 4 can be adopted.

第一の大引材４は、これを大引保持部２６内に配置し、この大引保持部２６の上部を止着具３２で締結し大引保持部２６内に保持する。また支持部材２は、大引保持部２６内に設けた弾性部材３０により、第一の大引材４を弾性支持する。この第一の大引材４により、上部の各第二の大引材６及び床材１６についても弾性支持される。弾性部材３０は、全ての支持部材２に取り付ける。
また、ここでは、隣り合う第一の大引材４同士の間隔は、例えば９００ｍｍとし互いに平行に配置する。 The first large pull member 4 is arranged in the large pull holding portion 26, and the upper portion of the large pull holding portion 26 is fastened with a fastener 32 and held in the large pull holding portion 26. Further, the support member 2 elastically supports the first large pull member 4 by the elastic member 30 provided in the large pull holding portion 26. The first large pulling material 4 also elastically supports the upper second large pulling material 6 and the floor material 16. The elastic member 30 is attached to all the support members 2.
Further, here, the distance between the adjacent first large pulling members 4 is set to, for example, 900 mm and arranged in parallel with each other.

上記第一の大引材４の上部には、これと直交する方向に第二の大引材（Ａ）６ａ、及び緩衝制限具１３を介在させた第二の大引材（Ｂ）６ｂを配置する。ここでは、第二の大引材（Ａ）６ａと第二の大引材（Ｂ）６ｂとを交互に配置する。また、隣り合う第二の大引材同士は平行に配置し、その間隔は例えば４００ｍｍとする。
なお他には、第二の大引材（Ａ）６ａ同士の間に一又は複数の第二の大引材（Ｂ）６ｂを配置し、或いは第二の大引材（Ｂ）６ｂ同士の間に一又は複数の第二の大引材（Ａ）６ａを配置する形態等がある。 On the upper part of the first large pulling material 4, a second large pulling material (A) 6a and a second large pulling material (B) 6b having a buffer limiting tool 13 interposed therein are placed in a direction orthogonal to the first large pulling material 4. Deploy. Here, the second large pulling material (A) 6a and the second large pulling material (B) 6b are alternately arranged. Further, the second large pulling members adjacent to each other are arranged in parallel, and the distance between them is, for example, 400 mm.
In addition, one or a plurality of second large pulling materials (B) 6b are arranged between the second large pulling materials (A) 6a, or two large pulling materials (B) 6b are placed between each other. There is a form in which one or a plurality of second large pulling materials (A) 6a are arranged between them.

図４（ａ）（ｂ）に示すように、第二の大引材（Ａ）６ａの取り付けに際しては、上記固定プレート１４を用いる。
この場合、予め第二の大引材（Ａ）６ａの下板部５０に固定プレート１４を取り付ける。先ず、第二の大引材（Ａ）６ａを逆にし、下板部５０の所定の位置に固定プレート１４の左右一対の延出部８０，８０を配置し、各ネジ孔８２から螺子３４を螺入し固定プレート１４を固定する。上記螺子３４（他の螺子も同様）は、セルフドリリング可能な螺子を用いる。 As shown in FIGS. 4A and 4B, the fixing plate 14 is used when attaching the second large pulling material (A) 6a.
In this case, the fixing plate 14 is attached to the lower plate portion 50 of the second large pulling material (A) 6a in advance. First, the second large pulling material (A) 6a is reversed, a pair of left and right extending portions 80, 80 of the fixing plate 14 are arranged at predetermined positions of the lower plate portion 50, and screws 34 are inserted from each screw hole 82. It is screwed in to fix the fixing plate 14. As the screw 34 (the same applies to other screws), a self-drillable screw is used.

次に、第二の大引材（Ａ）６ａに取り付けた各固定プレート１４の他の一対の延出部８０，８０を、第二の大引材（Ａ）６ａと交差する第一の大引材４の上部に配置し、各ネジ孔８２から螺子３４を用いて、固定プレート１４を第一の大引材４の上板部４０に固定する。
こうして、第一の大引材４の上部に、これと直交方向に配置した第二の大引材（Ａ）６ａを固定し、これと平行に他の第二大引材（Ａ）６ａを所定の間隔（例えば８００ｍｍ）をおいてそれぞれ配置固定する。
また、第二の大引材（Ａ）６ａの上板部４６の上部には、上側の根太材１７が交差する箇所に緩衝材１５を粘着する。この緩衝材１５は、床材１６（根太材１７等）が第二大引材（Ａ）６ａの上部に当接（間隙（Ｇａ）の消滅により）した際の衝撃を緩和し、また両者間の軋み音等を防止する。
なお、緩衝材１５は、第二の大引材（Ａ）６ａの真上の床材１６の下部側に取り付けることも可能である。 Next, the other pair of extension portions 80, 80 of each fixing plate 14 attached to the second large drawing material (A) 6a intersects the second large drawing material (A) 6a. It is arranged on the upper part of the pulling material 4, and the fixing plate 14 is fixed to the upper plate portion 40 of the first large pulling material 4 by using screws 34 from each screw hole 82.
In this way, the second large pulling material (A) 6a arranged in the direction orthogonal to the first large pulling material 4 is fixed to the upper part, and the other second large pulling material (A) 6a is placed in parallel with this. They are arranged and fixed at predetermined intervals (for example, 800 mm).
Further, the cushioning material 15 is adhered to the upper portion of the upper plate portion 46 of the second large pulling material (A) 6a at the intersection of the upper joist material 17. The cushioning material 15 cushions the impact when the floor material 16 (joist material 17, etc.) comes into contact with the upper part of the second large pulling material (A) 6a (due to the disappearance of the gap (Ga)), and also between the two. Prevents squeaking noises.
The cushioning material 15 can also be attached to the lower side of the floor material 16 directly above the second large pulling material (A) 6a.

続いて、図５に示すように、第二の大引材（Ｂ）６ｂの下部と第一の大引材４との間に、緩衝制限具１３を取り付ける。緩衝制限具１３は、下部側を第一の大引材４の上部に取り付け、上部側を第一の大引材４と直交向きに配置した第二の大引材（Ｂ）６ｂの下部に取り付ける。
ここでは、予め第二の大引材（Ｂ）６ｂの下板部５６に緩衝制限具１３を取り付ける。
先ず、第二の大引材（Ｂ）６ｂを逆さにし、下板部５６の所定位置にこれと沿う状態で、圧縮制限部材１０（これも逆さ）の天板部７４を配置し、各ネジ孔７８から螺子３４を螺入し天板部７４を第二の大引材（Ｂ）６ｂの下板部５６に固定する。 Subsequently, as shown in FIG. 5, a buffer limiting tool 13 is attached between the lower portion of the second large pulling material (B) 6b and the first large pulling material 4. The buffer limiting tool 13 is attached to the upper part of the first large pulling material 4 with the lower side attached, and the upper side is attached to the lower part of the second large pulling material (B) 6b arranged orthogonally to the first large pulling material 4. Install.
Here, the buffer limiting tool 13 is attached in advance to the lower plate portion 56 of the second large pulling material (B) 6b.
First, the second large pulling material (B) 6b is turned upside down, and the top plate portion 74 of the compression limiting member 10 (also upside down) is arranged along the predetermined position of the lower plate portion 56, and each screw. A screw 34 is screwed through the hole 78 to fix the top plate portion 74 to the lower plate portion 56 of the second large pulling material (B) 6b.

そして第二の大引材（Ｂ）６ｂを元に戻し、各緩衝制限具１３の受板材１２を、第一の大引材４の上板部４０上に配置し、受板材１２の各ネジ孔７９から螺子３４を螺入し、受板材１２を第一の大引材４の上板部４０に固定する。
こうして、第一の大引材４の上部であって、上記第二の大引材（Ａ）６ａ同士の間に、これと平行に第二の大引材（Ｂ）６ｂを固定し、これと同様に他の第二大引材（Ｂ）６ｂを所定の間隔（ここでは８００ｍｍ）をおいてそれぞれ配置固定する。 Then, the second large pulling material (B) 6b is returned to its original position, the receiving plate material 12 of each buffer limiting tool 13 is arranged on the upper plate portion 40 of the first large pulling material 4, and each screw of the receiving plate material 12 is arranged. A screw 34 is screwed through the hole 79, and the receiving plate member 12 is fixed to the upper plate portion 40 of the first large drawing member 4.
In this way, the second large pulling material (B) 6b is fixed in parallel with the upper part of the first large pulling material 4 and between the second large pulling materials (A) 6a. Similarly, the other second large pulling material (B) 6b is arranged and fixed at a predetermined interval (here, 800 mm).

なお、上記緩衝制限具１３は、上下の方向性は特に無いため、上下を逆にして圧縮制限部材１０を第一の大引材４に取り付け、受板材１２を第二の大引材（Ｂ）６ｂに取り付けて使用することも可能であり、同様な効果が得られる。
また、他の形態として、緩衝制限具１３を、第二の大引材（Ｂ）６ｂの上部と、上側の床材１６（根太材１７等）との間に取り付けることも可能である。この場合、緩衝制限具１３の圧縮制限部材１０（天板部７４）を床材１６（根太材１７等）に固定し、受板材１２を第二の大引材（Ｂ）６ｂの上板部５２に固定する等、上記と同様な手順で取り付けて使用することができ、同様な効果が得られる。 Since the buffer limiting tool 13 does not have a vertical direction, the compression limiting member 10 is attached to the first large pulling material 4 by turning it upside down, and the receiving plate material 12 is attached to the second large pulling material (B). ) It is also possible to attach it to 6b and use it, and the same effect can be obtained.
Further, as another form, the buffer limiting tool 13 can be attached between the upper part of the second large pulling material (B) 6b and the upper floor material 16 (joist material 17 or the like). In this case, the compression limiting member 10 (top plate portion 74) of the buffer limiting tool 13 is fixed to the floor material 16 (joist material 17 or the like), and the receiving plate material 12 is attached to the upper plate portion of the second large pulling material (B) 6b. It can be attached and used in the same procedure as above, such as fixing it to 52, and the same effect can be obtained.

上記第二の大引材（Ａ）６ａ及び第二の大引材（Ｂ）６ｂ等の上側には、これらと直交する方向に床材１６として根太材１７を配置する。根太材１７は、第二の大引材（Ｂ）６ｂの上板部５２上に固定する。ここでは、根太材１７のフランジ部８８から第二の大引材（Ｂ）６ｂの上板部５２にかけて螺子３４を螺入し、根太材１７を第二の大引材（Ｂ）６ｂの上板部５２に固定する。
他の根太材１７も同様に、所定の間隔（例えば３００ｍｍ）をおいて互いに平行に配置し、それぞれ第二の大引材（Ｂ）６ｂの上板部５２に固定する。
このように、第二の大引材（Ｂ）６ｂは常に根太材１７（床材１６）を支持する状態とし、一方、第二の大引材（Ａ）６ａと根太材１７（床材１６）との間には間隙（Ｇａ）を設ける。
図６は、実施の形態に係る床構造（床板材等を除く）の平面を示したものである。 On the upper side of the second large pulling material (A) 6a, the second large pulling material (B) 6b, etc., the joist material 17 is arranged as the floor material 16 in the direction orthogonal to these. The joist material 17 is fixed on the upper plate portion 52 of the second large pulling material (B) 6b. Here, the screw 34 is screwed from the flange portion 88 of the joist material 17 to the upper plate portion 52 of the second large pulling material (B) 6b, and the joist material 17 is placed on the second large pulling material (B) 6b. It is fixed to the plate portion 52.
Similarly, the other joist members 17 are arranged in parallel with each other at predetermined intervals (for example, 300 mm) and fixed to the upper plate portion 52 of the second large pulling member (B) 6b.
In this way, the second large pulling material (B) 6b is always in a state of supporting the joist material 17 (floor material 16), while the second large pulling material (A) 6a and the joist material 17 (floor material 16) are always supported. ) Is provided with a gap (Ga).
FIG. 6 shows the plane of the floor structure (excluding the floor board material and the like) according to the embodiment.

そして、根太材１７の上に床板材１８を敷設する。先ず、床板材１８として下貼材９０（構造用の合板）を根太材１７間に渡して各根太材１７の上部に取り付け、この下貼材９０の上にフローリング材９２を貼着し敷設する。
なお、ここでは床材１６として根太材１７を用いたが、この代わりに、床材１６として、下貼材９０を分厚く形成し或いは硬質の材料を用いることができ、根太材１７と同様に強度が確保され、代用が可能である。この場合、第二の大引材（Ａ）６ａ、（Ｂ）６ｂの上側に直接下貼材９０を配置し、この上にフローリング材８２を敷設する。
上記床構造の施工では、第一の大引材及び第二の大引材等を組み合わせることで床下地が構成され、各大引材等の配置及び固定という比較的作業者に負担をかけない作業により施工が行える。 Then, the floor board material 18 is laid on the joist material 17. First, as the floor board material 18, the underlaying material 90 (structural plywood) is passed between the joist materials 17 and attached to the upper part of each joist material 17, and the flooring material 92 is attached and laid on the underlaying material 90. ..
Here, the joist material 17 is used as the floor material 16, but instead, the underlaying material 90 can be formed thickly or a hard material can be used as the floor material 16, and the strength is the same as that of the joist material 17. Is secured and can be substituted. In this case, the underlaying material 90 is directly placed on the upper side of the second large pulling material (A) 6a and (B) 6b, and the flooring material 82 is laid on this.
In the construction of the above floor structure, the floor base is formed by combining the first large pulling material and the second large pulling material, and the arrangement and fixing of each large pulling material does not impose a relatively burden on the operator. Construction can be done by work.

さて、ここでは上記第二の大引材（Ａ）６ａ（断面正方形）は、縦（及び横）の長さ（外径）はそれぞれ７５ｍｍとし、第二の大引材（Ｂ）６ｂ（断面正方形）は、縦（及び横）の長さ（外径）はそれぞれ６０ｍｍとしている。このため、第二の大引材（Ａ）６ａの高さ幅（７５ｍｍ）と第二の大引材（Ｂ）６ｂの高さ幅（６０ｍｍ）との差は１５ｍｍ（７５−６０ｍｍ）である。 By the way, here, the second large pulling material (A) 6a (square cross section) has a vertical (and horizontal) length (outer diameter) of 75 mm, respectively, and the second large pulling material (B) 6b (cross section). The square) has a vertical (and horizontal) length (outer diameter) of 60 mm. Therefore, the difference between the height width (75 mm) of the second large pulling material (A) 6a and the height width (60 mm) of the second large pulling material (B) 6b is 15 mm (75-60 mm). ..

先ず、第二の大引材（Ｂ）６ｂに関して、第一の大引材４の上面部からの高さを求める。
弾性体８の高さ（Ｌｂ：上面部と下面部間）は、２０ｍｍである。ここで、緩衝制限具１３の高さ（Ｌｔ）は、弾性体８に加えて、圧縮制限部材１０の天板部７４の板厚（２．３ｍｍ）、及び受板材１２の板厚（２．３ｍｍ）を付け加え、これらを合わせると上記高さ（Ｌｔ）は２４．６ｍｍ（２０＋２．３＋２．３ｍｍ）となる。
このため、第二の大引材（Ｂ）６ｂと緩衝制限具１３とを合せた高さ、つまり第一の大引材４の上面部から第二の大引材（Ｂ）６ｂの上面部までの高さは、８４．６ｍｍ（６０＋２４．６ｍｍ）となる。 First, with respect to the second large pulling material (B) 6b, the height of the first large pulling material 4 from the upper surface is determined.
The height of the elastic body 8 (Lb: between the upper surface portion and the lower surface portion) is 20 mm. Here, the height (Lt) of the buffer limiting tool 13 is, in addition to the elastic body 8, the plate thickness (2.3 mm) of the top plate portion 74 of the compression limiting member 10 and the plate thickness (2.) of the receiving plate material 12. 3 mm) is added, and when these are combined, the height (Lt) is 24.6 mm (20 + 2.3 + 2.3 mm).
Therefore, the total height of the second large pulling material (B) 6b and the buffer limiting tool 13, that is, the upper surface portion of the first large pulling material 4 to the upper surface portion of the second large pulling material (B) 6b. The height up to is 84.6 mm (60 + 24.6 mm).

次に、第二の大引材（Ａ）６ａに関して、第一の大引材４の上面部からの高さを求める。
第二の大引材（Ａ）６ａの高さ幅（７５ｍｍ）と、下部に配置された固定プレート１４の板厚（２．３ｍｍ）とを合せると、７７．３ｍｍ（７５＋２．３ｍｍ）である。また、第二の大引材（Ａ）６ａの上部には緩衝材１５が貼着されており、例えば、この厚さを２．３ｍｍとすれば、第二の大引材（Ａ）６ａに固定プレート１４及び緩衝材１５を加えた全体の高さは、７９．６ｍｍ（７７．３＋２．３ｍｍ）となる。 Next, with respect to the second large pulling material (A) 6a, the height from the upper surface portion of the first large pulling material 4 is obtained.
The total height and width (75 mm) of the second large pulling material (A) 6a and the plate thickness (2.3 mm) of the fixed plate 14 arranged at the bottom are 77.3 mm (75 + 2.3 mm). .. Further, a cushioning material 15 is attached to the upper part of the second large pulling material (A) 6a. For example, if this thickness is 2.3 mm, the second large pulling material (A) 6a can be attached. The total height including the fixing plate 14 and the cushioning material 15 is 79.6 mm (77.3 + 2.3 mm).

したがって、第二の大引材（Ａ）６ａ（及び固定プレート１４、緩衝材１５）に係る高さと、第二の大引材（Ｂ）６ｂ（及び緩衝制限具１３）に係る高さとの差（上方の間隙）は、５．０ｍｍ（８４．６−７９．６ｍｍ）となる。
ここで床からの荷重を無視したとき、第二の大引材（Ａ）６ａとその上側の根太材１７との間には間隙（Ｇａ＝５．０ｍｍ）が生じる。そして、上記間隙（Ｇａ）により、第二の大引材（Ｂ）６ｂのみで床材１６（根太材１７等）を支持する構造となり、床材１６が、第二の大引材（Ｂ）６ｂの下部に配置した緩衝制限具１３の弾性体８により弾性支持される。
これにより、上記床構造に係る床を利用するときには、床材１６及び床上の運動者等は、主に第二の大引材（Ｂ）６ｂによって弾性支持され、運動者等が床から受ける衝撃等を緩和する。 Therefore, the difference between the height of the second large pulling material (A) 6a (and the fixing plate 14, the cushioning material 15) and the height of the second large pulling material (B) 6b (and the cushioning limiter 13). (Upper gap) is 5.0 mm (84.6-79.6 mm).
Here, when the load from the floor is ignored, a gap (Ga = 5.0 mm) is generated between the second large pulling material (A) 6a and the joist material 17 on the upper side thereof. Then, due to the gap (Ga), the floor material 16 (joist material 17 and the like) is supported only by the second large pulling material (B) 6b, and the floor material 16 is the second large pulling material (B). It is elastically supported by the elastic body 8 of the buffer limiting tool 13 arranged at the lower part of 6b.
As a result, when using the floor related to the floor structure, the floor material 16 and the exerciser or the like on the floor are elastically supported mainly by the second large pulling material (B) 6b, and the impact that the exerciser or the like receives from the floor. Etc. are alleviated.

次に、第二の大引材（Ｂ）６ｂに介在した緩衝制限具１３の具体的な作用について説明する。この緩衝制限具１３は図３に示すように、断面コ字状の圧縮制限部材１０の内側に弾性体８を配置した形状である。そして、圧縮制限部材１０の左右の制限部７６の縦の長さ（Ｌａ）を、弾性体８の高さ（Ｌｂ）よりも短くし、制限部７６の下端部７７と下方の受板材１２との間に間隙（Ｇｂ）（＝Ｌｂ−Ｌａ）を設けている。
ここでは、上記制限部７６の長さ（Ｌａ）は１５ｍｍとし、また弾性体８の高さ（Ｌｂ）を２０ｍｍとしているから、荷重を無視すると上記間隙（Ｇｂ）は５ｍｍ（＝２０−１５ｍｍ）となる。
これから、上記間隙（Ｇａ＝５ｍｍ）と上記間隙（Ｇｂ＝５ｍｍ）とは、同一である。 Next, the specific action of the buffer limiting tool 13 interposed in the second large pulling material (B) 6b will be described. As shown in FIG. 3, the buffer limiting tool 13 has a shape in which an elastic body 8 is arranged inside a compression limiting member 10 having a U-shaped cross section. Then, the vertical length (La) of the left and right limiting portions 76 of the compression limiting member 10 is made shorter than the height (Lb) of the elastic body 8, and the lower end portion 77 of the limiting portion 76 and the lower receiving plate member 12 are formed. A gap (Gb) (= Lb-La) is provided between the two.
Here, since the length (La) of the limiting portion 76 is 15 mm and the height (Lb) of the elastic body 8 is 20 mm, the gap (Gb) is 5 mm (= 20-15 mm) when the load is ignored. It becomes.
From this, the gap (Ga = 5 mm) and the gap (Gb = 5 mm) are the same.

このため、第二の大引材（Ｂ）６ｂについては、緩衝制限具１３の弾性体８により、上記間隙（Ｇｂ）の範囲で床上からの荷重を弾性支持する。さらに、荷重が大きくなると、弾性体８が圧縮して間隙（Ｇｂ）が消滅（Ｌｂ＝Ｌａ）する。この状態では、圧縮制限部材１０の制限部７６の下端部７７は、受板材１２の上面に当接し、荷重は圧縮制限部材１０の制限部７６により直接支持（非弾性支持）される。なお、この場合、緩衝制限具１３に加わる荷重は、制限部７６と弾性体８の反発力との両者によって支持される。
このように、緩衝制限具１３により、弾性体８の弾性支持に伴う圧縮を制限することで、耐荷重性が高められ、併せて弾性体８の破損等が防止される。 Therefore, for the second large pulling material (B) 6b, the elastic body 8 of the buffer limiting tool 13 elastically supports the load from the floor within the range of the gap (Gb). Further, when the load becomes large, the elastic body 8 is compressed and the gap (Gb) disappears (Lb = La). In this state, the lower end portion 77 of the limiting portion 76 of the compression limiting member 10 abuts on the upper surface of the receiving plate member 12, and the load is directly supported (non-elastically supported) by the limiting portion 76 of the compression limiting member 10. In this case, the load applied to the buffer limiting tool 13 is supported by both the limiting portion 76 and the repulsive force of the elastic body 8.
In this way, the cushioning limiter 13 limits the compression of the elastic body 8 due to the elastic support, so that the load bearing capacity is enhanced and the elastic body 8 is prevented from being damaged.

さらに、この実施の形態で採用した、第二の大引材（Ａ）６ａと第二の大引材（Ｂ）６ｂとの二種類の大引材について、これら相互の支持関係について説明する。
床からの荷重を無視した場合、第二の大引材（Ａ）６ａの上部（緩衝材１５を設けた場合はこの上部）と床材１６（根太材１７等）との間には、間隙（Ｇａ）が設けられており、また第二の大引材（Ｂ）６ｂについては、緩衝制限具１３に係る間隙（Ｇｂ）が設けられている。 Further, the two types of large pulling materials (A) 6a and the second large pulling material (B) 6b adopted in this embodiment will be described with respect to their mutual support relationships.
When the load from the floor is ignored, there is a gap between the upper part of the second large pulling material (A) 6a (the upper part when the cushioning material 15 is provided) and the floor material 16 (joist material 17 etc.). (Ga) is provided, and a gap (Gb) related to the cushioning limiter 13 is provided for the second large pulling material (B) 6b.

ここで、例えば、上記間隙（Ｇａ）と間隙（Ｇｂ）とを同一に設定した場合（Ｇａ＝Ｇｂ）について説明する。この場合、床上から荷重が加わると、これが人（運動者等）程度の荷重であれば、第二の大引材（Ｂ）６ｂに係る緩衝制限具１３の間隙（Ｇｂ）は消滅せず、床材１６は弾性体８により弾性支持される。 Here, for example, a case where the gap (Ga) and the gap (Gb) are set to be the same (Ga = Gb) will be described. In this case, when a load is applied from above the floor, if this is a load of about a person (exercise, etc.), the gap (Gb) of the buffer limiting tool 13 related to the second large pulling material (B) 6b does not disappear. The floor material 16 is elastically supported by the elastic body 8.

次に、床上から重機等の大きな荷重が加わった場合、弾性体８の圧縮により上記間隙（Ｇｂ）が消滅する。このとき、第二の大引材（Ｂ）６ｂ同士により支持された床材１６の位置が間隙（Ｇｂ）分低下し、同時に第二の大引材（Ａ）６ａ上の間隙（Ｇａ）も消滅する。上記間隙（Ｇａ）が消滅すると、床材１６に係る根太材１７の下部が第二の大引材（Ａ）６ａの上部に圧接する。この時の衝撃は、緩衝材１５により緩和される。
よって、重荷重が加わった床材１６は、第二の大引材（Ａ）６ａ、第二の大引材（Ｂ）６ｂ及び緩衝制限具１３（圧縮制限部材１０）の三者により支持（非弾性支持）される。つまり、この時の床材１６の支持構造は、大引材、緩衝制限具を構成する鋼材により、高い耐荷重性を有するものとなる。 Next, when a large load such as a heavy machine is applied from above the floor, the gap (Gb) disappears due to the compression of the elastic body 8. At this time, the position of the floor material 16 supported by the second large pulling material (B) 6b is lowered by the gap (Gb), and at the same time, the gap (Ga) on the second large pulling material (A) 6a is also lowered. Disappear. When the gap (Ga) disappears, the lower part of the joist material 17 related to the floor material 16 is pressed against the upper part of the second large pulling material (A) 6a. The impact at this time is alleviated by the cushioning material 15.
Therefore, the floor material 16 to which the heavy load is applied is supported by the second large pulling material (A) 6a, the second large pulling material (B) 6b, and the buffer limiting tool 13 (compression limiting member 10). Inelastic support). That is, the support structure of the floor material 16 at this time has a high load bearing capacity due to the steel material constituting the large pulling material and the buffer limiting tool.

上記実施の形態に係る床構造により、通常、床材（根太材等）は第二の大引材（Ｂ）（弾性体）によって弾性支持されていることから、スポーツなどで運動者による床衝撃等に対して好適な床弾力性能を発揮し、緩衝作用にも優れたスポーツフロアとなる。
一方、展示会やコンサート等のイベント開催時に、フォークリフト等の重量物がフロアを移動等するときは、弾性体の圧縮が圧縮制限部材によって制限され、これにより第二の大引材（Ｂ）による支持は非弾性支持に切りかわる。これと併せて、弾性体の圧縮に伴い床材が第二の大引材（Ａ）によっても支持（非弾性支持）される状態となり、床材は第二の大引材（Ａ）及び第二の大引材（Ｂ）等によって非弾性支持され、高い耐荷重性能が発揮される。
また、第二の大引材（Ａ）及び第二の大引材（Ｂ）を支持する第一の大引材自体も、支持部材（弾性部材３０）により弾性支持されているため、重量物による床材、大引材等に対する衝撃、及び衝撃音等を有効に緩和することができる According to the floor structure according to the above embodiment, the floor material (joist material, etc.) is usually elastically supported by the second large pulling material (B) (elastic body), so that the floor impact by an exerciser in sports or the like It is a sports floor that exhibits suitable floor elasticity and has an excellent cushioning effect.
On the other hand, when a heavy object such as a forklift moves on the floor during an event such as an exhibition or concert, the compression of the elastic body is restricted by the compression limiting member, which is caused by the second large pulling material (B). The support switches to inelastic support. At the same time, as the elastic body is compressed, the floor material is also supported (inelastically supported) by the second large pulling material (A), and the floor material is supported by the second large pulling material (A) and the second large pulling material (A). It is inelastically supported by the second large pulling material (B) and the like, and exhibits high load bearing performance.
Further, since the first large pulling material itself that supports the second large pulling material (A) and the second large pulling material (B) is also elastically supported by the support member (elastic member 30), it is a heavy object. It is possible to effectively mitigate the impact and impact noise on the floor material, large pulling material, etc.

したがって、上記実施の形態に係る床構造によれば、種々の大引材を組み合わせ且つ弾性支持を加えた構造により、床下地形成のための作業が大引材の配置及び固定という、比較的作業者に負担をかけない軽作業による施工内容となるため、作業性、施工性に優れ、また単純な構造の大引材が主な材料となるため、材料の生産性及び経済性にも優れる。また併せて、この床構造では、上記スポーツ施設として良好な弾力性、緩衝性を有するフロアが得られ、またイベント開催時には重量物であっても、高い耐荷重性能が発揮できるという効果がある。 Therefore, according to the floor structure according to the above-described embodiment, the work for forming the floor base is a relatively work of arranging and fixing the large pulling material due to the structure in which various large pulling materials are combined and elastically supported. Since the construction content is light work that does not impose a burden on people, it is excellent in workability and workability, and because the main material is a large pulling material with a simple structure, it is also excellent in material productivity and economy. At the same time, this floor structure has an effect that a floor having good elasticity and cushioning property can be obtained as the above-mentioned sports facility, and high load bearing performance can be exhibited even if it is a heavy object at the time of holding an event.

図７は、他の形態に係る床構造を示したものである。ここでの床構造は、主に特別な床（低床等）などに採用され、支持部材２を用いないで第一の大引材４を配置する形態である。なお、上記実施の形態に係る床構造と同一の部材（支持部材２以外）は、同じ符号を付してここでの詳細な説明は省略する。
この床構造についても、多目的ホール、イベント会場、その他公共の施設等、弾力性能が要求されまた過大な荷重が加わる施設等において採用することができる。
この床構造は、第一の大引材４、第二の大引材６，６ａ，６ｂ、弾性体８、圧縮制限部材１０、受板材１２、固定プレート１４、緩衝材１５、床材１６（根太材１７及び床板材１８等）等を有する。第二の大引材６は、その内の一部の第二の大引材（Ｂ）６ｂと、残部の第二の大引材（Ａ）６ａに分けられる。 FIG. 7 shows a floor structure according to another form. The floor structure here is mainly adopted for a special floor (low floor or the like), and is a form in which the first large pulling member 4 is arranged without using the support member 2. The same members (other than the support member 2) as the floor structure according to the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted here.
This floor structure can also be adopted in facilities such as multipurpose halls, event venues, and other public facilities where elasticity is required and an excessive load is applied.
This floor structure includes a first large pulling material 4, a second large pulling material 6, 6a, 6b, an elastic body 8, a compression limiting member 10, a receiving plate material 12, a fixing plate 14, a cushioning material 15, and a floor material 16 ( It has a joist material 17 and a floor board material 18 etc.). The second large pulling material 6 is divided into a part of the second large pulling material (B) 6b and the remaining second large pulling material (A) 6a.

ここでは、第一の大引材４は、直接、基礎面３上に配置する。第一大引材４の配置形態（平面形態）は、上記支持部材２を用いた場合と同様である。この場合、第一の大引材４は接着剤等を用いて基礎面３に固定しても良い。また、基礎面３を平坦な状態に整地することで滑らかな床が得られる。第一の大引材４を配置する場合、基礎面３との間に弾性部材３０を介在させても良く、これにより重量物による床材、大引材等に対する衝撃、及び衝撃音等を緩和することができる。
この床構造においても、第二の大引材（Ａ）６ａ，（Ｂ）６ｂ、弾性体８、その他の部材等の配置形態、作用及び効果等は上記実施の形態と同様である。 Here, the first large pulling material 4 is arranged directly on the foundation surface 3. The arrangement form (planar form) of the first large pulling member 4 is the same as when the support member 2 is used. In this case, the first large pulling material 4 may be fixed to the foundation surface 3 by using an adhesive or the like. Further, a smooth floor can be obtained by leveling the foundation surface 3 in a flat state. When the first large pulling material 4 is arranged, the elastic member 30 may be interposed between the first large pulling material 4 and the floor material, the large pulling material, etc. due to heavy objects, and the impact noise and the like are alleviated. can do.
Also in this floor structure, the arrangement form, action, effect, etc. of the second large pulling material (A) 6a, (B) 6b, the elastic body 8, and other members are the same as those in the above embodiment.

２支持部材
４第一の大引材
６第二の大引材
６ａ一部の第二の大引材（Ａ）
６ｂ残部の第二の大引材（Ｂ）
８弾性体
１０圧縮制限部材
１２受板材
１４固定プレート
１５緩衝材
１６床材
１７根太材
１８床板材
２６大引保持部
３０弾性部材
７６制限部 2 Support member 4 First large pulling material 6 Second large pulling material 6a Part of the second large pulling material (A)
6b The remaining second large pulling material (B)
8 Elastic body 10 Compression limiting member 12 Receiving plate material 14 Fixing plate 15 Cushioning material 16 Floor material 17 Joist material 18 Floor plate material 26 Large pull holding part 30 Elastic member 76 Restricting part

Claims

The first large pulling material placed at a predetermined interval on the foundation surface,
On the upper part of each of the first large pulling materials, a second large pulling material intersecting with these and placed at a predetermined interval,
It has a flooring material arranged above the second large pulling material, and
An elastic body is interposed between a part of the second large pulling material (B) of the second large pulling material and the first large pulling material or between the floor material, and this first The floor material is supported by the second large pulling material (B),
A floor structure characterized in that a gap is formed between the second large pulling material (A), which is the remainder of the second large pulling material, and the floor material.

The floor structure according to claim 1, wherein the first large pulling material is supported by a support member erected on the foundation surface.

The floor structure according to claim 2, wherein an elastic member is interposed between the large pull holding portion of the support member and the first large pull member.

The height width of the second large pulling material (B) is made smaller than the height width of the second large pulling material (A), and the elastic body is made of the second large pulling material (B). The floor structure according to any one of claims 1 to 3, wherein the floor structure is interposed below or above the floor structure.

As the compression limiting member, a limiting portion made of an inelastic material is formed in the vertical direction and arranged in the vicinity of the elastic body, and the vertical length of the limiting portion is made shorter than the vertical length of the elastic body. Form a vertical gap between them,
The claim is characterized in that, with the compression of the elastic body by the load from the floor material, the gap in the vertical direction disappears, the load is supported by the limiting portion, and the compression of the elastic body is limited. The floor structure according to 4.

The floor structure according to claim 5, wherein the gap between the floor material and the vertical gap are formed at the same intervals.

The floor structure according to any one of claims 1 to 6, wherein the second large pulling material (B) and the second large pulling material (A) are alternately arranged.

The floor structure according to any one of claims 1 to 7, wherein a cushioning material is interposed between the second large pulling material (A) and the floor material.

The floor material is characterized by having a joist material that intersects and is arranged at a predetermined interval on the upper side of the second large pulling material, and a floor plate material that is arranged on the upper part of the joist material. The floor structure according to any one of claims 1 to 8.

Claims 1 to 9 are characterized in that a cross-shaped fixing plate is interposed between the first large pulling material and the second large pulling material (A) to fix both large pulling materials to each other. The floor structure described in any of.