JP2013234485A - Foot member and base-isolated double floor - Google Patents

Foot member and base-isolated double floor Download PDF

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JP2013234485A
JP2013234485A JP2012107273A JP2012107273A JP2013234485A JP 2013234485 A JP2013234485 A JP 2013234485A JP 2012107273 A JP2012107273 A JP 2012107273A JP 2012107273 A JP2012107273 A JP 2012107273A JP 2013234485 A JP2013234485 A JP 2013234485A
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floor
seismic isolation
foot member
double floor
foot
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Takahito Homitsu
貴人 穂満
Shoji Masuko
彰司 増子
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TOWA SCREW CO Ltd
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TOWA SCREW CO Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a base-isolated double floor which has a sufficient base-isolation effect, which can be inexpensively constructed, and which can sufficiently secure horizontality of an upper floor.SOLUTION: An upper floor is supported by a base part, a support which is erected from the base part, a foot member which has a receiving plate horizontally supported on an upper part of the support, which has a sphere rotatably provided on an upper surface of the receiving plate and which makes the upper floor slidable with respect to the foot member by supporting an undersurface of the upper floor by the top of the sphere, and a base isolation device in which upside and downside members each having a curved concave part provided on an inner surface vertically face each other in the state of having an interval by making a tablet-shaped rolling member fitted into the concave part. Thus, the above problem is solved.

Description

本発明は、建造物のコンクリートスラブなどの下床の上に設置して上床を支持する足部材、及びこの足部材を用いた免震二重床に関する。   The present invention relates to a foot member that is installed on a lower floor such as a concrete slab of a building and supports the upper floor, and a seismic isolation double floor using the foot member.

地震時の揺れを低減する免震二重床は、下記特許文献１，２などに開示されている。
下記特許文献１は、下床の上に台座、フッ素樹脂板、ステンレス板を順次載置し、その上に溝形鋼などでフレームを形成し、その上に上床を施工するものである。地震時に、フッ素樹脂板とステンレス板が滑動するので、下床の横揺れに対してフレーム及び上床の横揺れが低減する。 The seismic isolation double floor which reduces the shaking at the time of an earthquake is disclosed by the following patent documents 1, 2.
In the following Patent Document 1, a pedestal, a fluororesin plate, and a stainless steel plate are sequentially placed on a lower floor, a frame is formed of grooved steel or the like thereon, and the upper floor is constructed thereon. Since the fluororesin plate and the stainless steel plate slide during an earthquake, the rolling of the frame and the upper floor is reduced relative to the rolling of the lower floor.

下記特許文献２は、下床上に弾性変形する球体を多数載置し、その上に上床を施工するものである。上床の外周は弾性バネで壁に接続されるため、地震時に上床が下床に対してスライドし、揺れを低減する。   In Patent Document 2 below, a large number of spheres that are elastically deformed are placed on the lower floor, and the upper floor is constructed thereon. Since the outer circumference of the upper floor is connected to the wall by an elastic spring, the upper floor slides against the lower floor during an earthquake, reducing shaking.

また、下記特許文献３には、構造物と基礎部材の間に介装着され、構築物を地震から保護する免震装置で、内面に曲面状凹部を有する上側部材と下側部材が、前記凹部内にタブレット形の転動部材が装入されていることで間隔を有して対向しているものが開示されている。   Further, in Patent Document 3 below, a seismic isolation device that is interposed between a structure and a base member and protects a structure from an earthquake, and an upper member and a lower member having a curved concave portion on the inner surface are disposed in the concave portion. A tablet-shaped rolling member is inserted in the above and is opposed to each other with a gap.

特開平５−１８０９８JP-A-5-18098 特開２００４−３１６４２０JP 2004-316420 A 特開２００６−２８３９５９JP 2006-283959 A

前記特許文献１の二重床は、フッ素樹脂板とステンレス板の滑動抵抗が大きいため、十分な免震効果が期待できず、また、溝形鋼などのフレームの上に上床を形成するので、上床の高さが高くなり、コスト高となる。   Since the double floor of Patent Document 1 has a large sliding resistance between the fluororesin plate and the stainless steel plate, a sufficient seismic isolation effect cannot be expected, and the upper floor is formed on a frame such as a grooved steel, The height of the upper floor becomes higher and the cost becomes higher.

前記特許文献２の二重床は、弾性変形する球体の上に上床を設けるので、積載荷重により上床が沈み込み、上床面の水平性が確保できないという致命的な欠点を有する。   The double floor disclosed in Patent Document 2 has a fatal defect that the upper floor sinks due to a load, and the horizontality of the upper floor surface cannot be secured because the upper floor is provided on a sphere that is elastically deformed.

本発明は、十分な免震効果を有し、安価に施工でき、上床の水平性も十分確保できる免震二重床、及びこの免震二重床を容易に施工できる足部材を提供することを課題とするものである。   The present invention provides a seismic isolation double floor that has a sufficient seismic isolation effect, can be constructed at low cost, and can ensure sufficient horizontality of the upper floor, and a foot member that can easily construct this seismic isolation double floor. Is an issue.

〔請求項１〕
本発明は、下床上に多数設置されて上床を支持する二重床の足部材であって、
台部と、台部から立設した支柱と、支柱上部に水平に支持される受板を有し、
該受板上面に球体を回転可能に装備し、該球体の頂部で上床の下面を支持することで、上床が足部材に対してスライド可能となることを特徴とする足部材である。 [Claim 1]
The present invention is a double floor foot member that is installed on the lower floor and supports the upper floor,
It has a base part, a support column erected from the support part, and a receiving plate supported horizontally on the upper part of the support element.
The foot member is characterized in that a spherical body is rotatably mounted on the upper surface of the receiving plate, and the upper floor is slidable with respect to the foot member by supporting the lower surface of the upper floor at the top of the spherical body.

地震時に、上床が球体の上を水平方向にスライドし、このとき球体が回転するので、上床のスライド抵抗が小さく、十分な免震効果を得ることができる。球体は金属製や硬質樹脂など、ほとんど変形しない材質を使用できるので、上床の水平性が十分確保できる。従来の足部材を、球体を装備できるように改造すればよいので、安価に製造できる。
球体の数は、１個以上何個でもよい。 At the time of an earthquake, the upper floor slides horizontally on the sphere, and the sphere rotates at this time. Therefore, the sliding resistance of the upper floor is small, and a sufficient seismic isolation effect can be obtained. Since the sphere can be made of a material that hardly deforms, such as metal or hard resin, the level of the upper floor can be sufficiently secured. Since the conventional foot member may be modified to be equipped with a sphere, it can be manufactured at low cost.
The number of spheres may be one or more.

〔請求項２〕
また本発明は、前記受板の上面に、前記球体の移動を制限する凸部又は凹部を有する請求項１に記載の足部材である。 [Claim 2]
Moreover, this invention is a leg member of Claim 1 which has a convex part or a recessed part which restrict | limits the movement of the said spherical body on the upper surface of the said receiving plate.

凸部又は凹部によって球体の位置を制限できるので、受板上の所定の位置に球体を留めることができ、上床をバランスよく支持できる。   Since the position of the sphere can be limited by the convex portion or the concave portion, the sphere can be held at a predetermined position on the receiving plate, and the upper floor can be supported in a balanced manner.

〔請求項３〕
また本発明は、下床上に多数設置されて上床を支持する二重床の足部材であって、
台部と、台部から立設した支柱と、支柱上部に水平に支持される受板を有し、
前記台部の底面に球体を回転可能に装備し、該球体の下端が下床面に接することで、足部材が下床上をスライド可能となることを特徴とする足部材である。 [Claim 3]
Also, the present invention is a double floor foot member that is installed on the lower floor and supports the upper floor,
It has a base part, a support column erected from the support part, and a receiving plate supported horizontally on the upper part of the support element.
The foot member is characterized in that a sphere is rotatably mounted on the bottom surface of the base portion, and the foot member can slide on the lower floor when the lower end of the sphere contacts the lower floor surface.

球体は、受板上面に代えて、台部の底面に装備させることができる。地震時に、上床及び足部材が下床の上をスライドし、このとき球体が回転するので、上床のスライド抵抗が小さく、十分な免震効果を得ることができる。球体は金属製や硬質樹脂など、ほとんど変形しない材質を使用できるので、上床の水平性が十分確保できる。従来の足部材を、球体を装備できるように改造すればよいので、安価に製造できる。
球体の数は、１個以上何個でもよい。 The sphere can be mounted on the bottom surface of the base portion instead of the top surface of the receiving plate. At the time of the earthquake, the upper floor and the foot members slide on the lower floor, and the sphere rotates at this time. Therefore, the sliding resistance of the upper floor is small, and a sufficient seismic isolation effect can be obtained. Since the sphere can be made of a material that hardly deforms, such as metal or hard resin, the level of the upper floor can be sufficiently secured. Since the conventional foot member may be modified to be equipped with a sphere, it can be manufactured at low cost.
The number of spheres may be one or more.

〔請求項４〕
また本発明は、前記台部の底面に、前記球体の移動を制限する凸部又は凹部を有する請求項３に記載の足部材である。 [Claim 4]
Moreover, this invention is a leg member of Claim 3 which has a convex part or a recessed part which restrict | limits the movement of the said spherical body in the bottom face of the said base part.

凸部又は凹部によって球体の位置を制限できるので、台部底面の所定の位置に球体を留めることができ、足部材が下床上にバランスよく支持される。   Since the position of the sphere can be limited by the convex portion or the concave portion, the sphere can be held at a predetermined position on the bottom surface of the base portion, and the foot member is supported on the lower floor in a balanced manner.

〔請求項５〕
また本発明は、前記台部の底面が、前記球体の落下を防止するカバーで覆われている請求項３又は４に記載の足部材である。 [Claim 5]
Moreover, this invention is a foot member of Claim 3 or 4 with which the bottom face of the said base part is covered with the cover which prevents the fall of the said spherical body.

カバーにより、球体が足部材から落下しないので、足部材を下床の上に配置する作業を容易に行うことができる。   Since the sphere does not fall from the foot member by the cover, the work of placing the foot member on the lower floor can be easily performed.

〔請求項６〕
また本発明は、請求項１〜５に記載のいずれかの足部材と、
内面に曲面状凹部を有する上側部材と下側部材が、前記凹部内にタブレット形の転動部材が装入されていることで間隔を有して上下に対向している免震装置を、適宜間隔で下床上に配置し、該足部材及び免震装置により上床を支持することで、地震時に上床が下床に対してスライドすることを特徴とする免震二重床である。 [Claim 6]
The present invention also includes any one of the foot members according to claims 1 to 5,
A seismic isolation device having an upper member and a lower member each having a curved concave portion on the inner surface and facing the upper and lower sides with a gap by inserting a tablet-shaped rolling member in the concave portion, as appropriate. The seismic isolation double floor is characterized by being arranged on the lower floor at intervals and supporting the upper floor with the foot members and the seismic isolation device so that the upper floor slides relative to the lower floor during an earthquake.

免震装置は高価であるが、本発明の足部材と併用することで、免震二重床を比較的安価に製造できる。本発明の足部材は垂直荷重を下床に伝達し、水平荷重は伝達しないが、免震装置が垂直荷重及び水平荷重を下床に伝達し、振動を減衰させる。
なお、タブレット形とは、中央の上下面が膨らんだ円板形状である。 Although the seismic isolation device is expensive, the seismic isolation double floor can be manufactured at a relatively low cost by using it together with the foot member of the present invention. The foot member of the present invention transmits a vertical load to the lower floor and not a horizontal load, but the seismic isolation device transmits the vertical load and the horizontal load to the lower floor to attenuate the vibration.
Note that the tablet shape is a disk shape in which the upper and lower surfaces of the center swell.

〔請求項７〕
また本発明は、前記足部材の数が、前記免震装置の数の５倍以上である請求項６に記載の免震二重床である。 [Claim 7]
Moreover, this invention is a seismic isolation double floor | bed of Claim 6 whose number of the said leg members is 5 times or more of the number of the said seismic isolation apparatuses.

本発明の足部材の数は、免震装置の数の５〜１５倍程度とすることができる。   The number of leg members of the present invention can be about 5 to 15 times the number of seismic isolation devices.

〔請求項８〕
また本発明は、壁の内周に沿って任意幅のスライド不能な外周床を形成し、該外周床と同じ高さの請求項６又は７に記載の免震二重床を、外周床の内側に、所定間隔をあけて形成し、免震二重床と外周床の間をスライドプレートで覆った二重床構造であって、スライドプレートが前記免震二重床に固定されていると共に、前記外周床の内周部を覆っており、地震時に前記免震二重床及びスライドプレートが外周床に対してスライドすることを特徴とする二重床構造である。 [Claim 8]
Moreover, this invention forms the non-slidable outer peripheral floor of arbitrary width along the inner periphery of a wall, The seismic isolation double floor of Claim 6 or 7 of the same height as this outer peripheral floor is used. A double floor structure formed inside with a predetermined interval and covered with a slide plate between the seismic isolation double floor and the outer peripheral floor, the slide plate being fixed to the seismic isolation double floor, The double floor structure is characterized in that the inner peripheral portion of the outer peripheral floor is covered and the seismic isolation double floor and the slide plate slide relative to the outer peripheral floor at the time of an earthquake.

地震時に、スライドプレートが上床と一体になってスライドするので、上床及びスライドプレートの上に物を置くことができ、物を置くことができる範囲が非常に広くなる。物を置くことができないのは、外周床上でスライドプレートで覆われていない部分だけである。   Since the slide plate slides integrally with the upper floor at the time of an earthquake, an object can be placed on the upper floor and the slide plate, and the range in which the object can be placed becomes very wide. The only place where objects cannot be placed is on the perimeter floor that is not covered by the slide plate.

本発明の免震二重床は、十分な免震効果を有し、安価に施工でき、上床の水平性も十分確保できる。
本発明の二重床構造は、十分な免震効果を有し、安価に施工でき、上床の水平性も十分確保できる上に、物を置ける範囲が非常に広くなる。
本発明の足部材によれば、本発明の免震二重床及び二重床構造を容易に施工することができる。 The seismic isolation double floor of the present invention has a sufficient seismic isolation effect, can be constructed at low cost, and can sufficiently secure the horizontality of the upper floor.
The double floor structure of the present invention has a sufficient seismic isolation effect, can be constructed at low cost, can sufficiently secure the horizontality of the upper floor, and has a very wide range where objects can be placed.
According to the foot member of the present invention, the seismic isolation double floor and the double floor structure of the present invention can be easily constructed.

実施形態の足部材の上面図及びＡＡ断面図である。It is a top view and AA sectional view of a leg member of an embodiment. 他の実施形態の足部材の上面図及びＢＢ断面図である。It is a top view and BB sectional view of a leg member of other embodiments. 他の実施形態の足部材の上面図である。It is a top view of the leg member of other embodiments. 他の実施形態の足部材の下面図及びＣＣ断面図である。It is the bottom view and CC sectional drawing of the leg member of other embodiment. 免震装置の上面図及び中央縦断面図である。It is the top view and center longitudinal cross-sectional view of a seismic isolation apparatus. 実施形態の二重床構造の説明図である。It is explanatory drawing of the double floor structure of embodiment. 実施形態の二重床構造の断面図である。It is sectional drawing of the double floor structure of embodiment. 図６における外周床の断面図である。It is sectional drawing of the outer periphery floor | bed in FIG. 他の実施形態の二重床構造の断面図である。It is sectional drawing of the double floor structure of other embodiment. 他の実施形態の二重床構造の説明図である。It is explanatory drawing of the double floor structure of other embodiment. 図１０の二重床構造の断面図である。It is sectional drawing of the double floor structure of FIG.

図１は、本発明の実施形態の足部材１の上面図（上段）及びＡＡ断面図（下段）である。
同図において、足部材１は板状の台部１０と、台部１０から立設した支柱１１と、支柱１１上部に水平に支持される受板１２を有する。台部１０と支柱１１下部は、接着、溶接、ねじ込み、嵌め込みなど任意の手段で結合、一体化されている。受板１２の下面にはナット部１２ｃが垂下形成され、これに支柱１１（外周に螺条を有する）が螺着され、高さ調整可能になっている。符号１３は緩み止めナットである。 FIG. 1 is a top view (upper stage) and AA cross-sectional view (lower stage) of a foot member 1 according to an embodiment of the present invention.
In FIG. 1, the foot member 1 includes a plate-like pedestal 10, a support 11 standing from the support 10, and a receiving plate 12 that is supported horizontally on the support 11. The base part 10 and the lower part of the support | pillar 11 are couple | bonded and integrated by arbitrary means, such as adhesion | attachment, welding, screwing, and fitting. A nut portion 12c is suspended from the lower surface of the receiving plate 12, and a column 11 (having a thread on the outer periphery) is screwed to the nut portion 12c, so that the height can be adjusted. Reference numeral 13 denotes a locking nut.

受板１２の上面は４個の球体１４を回転可能に装備している。受板１２の上面には、外周凸部１２ａ及び中央凸部１２ｂが突出形成され、これにより４個の球体１４の移動が制限され、球体は所定の位置に留まる。後述するように、球体１４の頂部で上床の下面を支持することで、上床が足部材に対してスライド可能となる。   The upper surface of the receiving plate 12 is equipped with four spheres 14 for rotation. On the upper surface of the receiving plate 12, an outer peripheral convex portion 12 a and a central convex portion 12 b are formed to protrude, thereby restricting the movement of the four spheres 14, and the spheres remain in a predetermined position. As will be described later, by supporting the lower surface of the upper floor with the top of the sphere 14, the upper floor can slide with respect to the foot member.

図１の足部材１は、従来周知の二重床用足部材の受台を、球体１４を装備可能なように改造したものである。   The foot member 1 shown in FIG. 1 is obtained by remodeling a well-known pedestal for a double floor so that a sphere 14 can be mounted.

図２は、本発明の他の実施形態の足部材１の上面図（上段）及びＢＢ断面図（下段）である。
同図の足部材は、図１の足部材の中央凸部１２ｂに代えて４個の凹部１２ｄを形成したもので、その他は図１の足部材と同じ構成となっている。外周凸部１２ａ及び凹部１２ｄによって４個の球体１４の移動が制限され、球体は所定の位置に留まる。 FIG. 2 is a top view (upper stage) and a BB cross-sectional view (lower stage) of a foot member 1 according to another embodiment of the present invention.
The foot member shown in the figure has the same structure as the foot member shown in FIG. 1 except that four concave portions 12d are formed instead of the central protrusion 12b of the foot member shown in FIG. The movement of the four spheres 14 is restricted by the outer peripheral convex portion 12a and the concave portion 12d, and the sphere remains in a predetermined position.

図３は、本発明の他の実施形態の足部材１の上面図である。台部１０が円形、受板１２が略三角形に形成され、球体１４が３個である他は図１の足部材と同じ構成になっている。
このように、球体の数、台部及び受板の平面形状は任意に変更することができる。 FIG. 3 is a top view of a foot member 1 according to another embodiment of the present invention. 1 except that the base 10 is circular, the receiving plate 12 is formed in a substantially triangular shape, and the number of the spheres 14 is three.
In this way, the number of spheres, the planar shape of the platform and the receiving plate can be arbitrarily changed.

図４は、本発明の他の実施形態の足部材１の下面図（上段）及びＣＣ断面図（下段）である。
同図において、足部材１は概略板状の台部１０と、台部１０から立設した支柱１１と、支柱１１上部に水平に支持される受板１２を有する。台部１０と支柱１１下部は、接着、溶接、ねじ込み、嵌め込みなど任意の手段で結合、一体化されている。受板１２の下面にはナット部１２ｃが垂下形成され、これに支柱１１（外周に螺条を有する）が螺着され、高さ調整可能になっている。符号１３は緩み止めナットである。 FIG. 4: is the bottom view (upper stage) and CC sectional drawing (lower stage) of the foot member 1 of other embodiment of this invention.
In FIG. 1, the foot member 1 includes a substantially plate-like base portion 10, a support column 11 erected from the support portion 10, and a receiving plate 12 supported horizontally on the upper portion of the support column 11. The base part 10 and the lower part of the support | pillar 11 are couple | bonded and integrated by arbitrary means, such as adhesion | attachment, welding, screwing, and fitting. A nut portion 12c is suspended from the lower surface of the receiving plate 12, and a column 11 (having a thread on the outer periphery) is screwed to the nut portion 12c, so that the height can be adjusted. Reference numeral 13 denotes a locking nut.

台部１０の底面は４個の球体１４を回転可能に装備している。台部１０の底には、外周凸部１０ａが突出形成され、更に４個の凹部１０が形成され、これにより４個の球体１４の移動が制限され、球体は所定の位置に留まる。また、台部１０にはカバー１５が嵌め込まれ、球体１４の落下を防止するように底面がカバー１５で覆われている。カバー１５は４個の丸い穴１５ａを有し、この穴から球体１４の下部が露出している。後述するように、球体１４の下端が下床面に接することで、足部材が下床上をスライド可能となる。   The bottom surface of the base portion 10 is equipped with four spheres 14 so as to be rotatable. On the bottom of the base portion 10, an outer peripheral convex portion 10a is formed so as to protrude, and further four concave portions 10 are formed. This restricts the movement of the four spherical bodies 14, and the spherical body remains in a predetermined position. Further, a cover 15 is fitted into the base 10, and the bottom surface is covered with the cover 15 so as to prevent the sphere 14 from falling. The cover 15 has four round holes 15a, and the lower part of the sphere 14 is exposed from these holes. As will be described later, when the lower end of the sphere 14 is in contact with the lower floor surface, the foot member can slide on the lower floor.

図４の足部材１は、従来周知のＯＡフロア用足部材の台部を、球体１４を装備可能なように改造したものである。   The foot member 1 shown in FIG. 4 is obtained by modifying a base part of a conventionally known foot member for an OA floor so that a sphere 14 can be mounted.

図５は、従来周知の免震装置２の上面図（上段）及び中央縦断面図（下段）である。
免震装置２は、板状の上側部材２１、下側部材２２及びタブレット形の転動部材２３を有する。上側部材２１の内面（下面）及び下側部材の内面（上面）には曲面状凹部２１ａ、２２ａが形成されている。上側部材２１と下側部材２２は、曲面状凹部２１ａ、２２ａの内部にタブレット形の転動部材２３が装入されていることで間隔を有して上下に対向している。 FIG. 5 is a top view (upper stage) and a central longitudinal sectional view (lower stage) of a conventionally known seismic isolation device 2.
The seismic isolation device 2 includes a plate-like upper member 21, a lower member 22, and a tablet-shaped rolling member 23. Curved recesses 21a and 22a are formed on the inner surface (lower surface) of the upper member 21 and the inner surface (upper surface) of the lower member. The upper member 21 and the lower member 22 are opposed to each other with a gap therebetween by inserting a tablet-shaped rolling member 23 in the curved concave portions 21a and 22a.

図６〜図８は、本発明の実施形態の二重床構造の説明図である。
この二重床構造は、本発明の足部材１（図１〜３）と、免震装置２（図５）を適宜間隔で下床上に配置し、該足部材及び免震装置により上床を支持することで、地震時に上床が下床に対してスライドする免震二重床を有する。足部材１の間隔は３００〜６００ｍｍ、免震装置の間隔は２〜３ｍ程度が適当である。 6-8 is explanatory drawing of the double floor structure of embodiment of this invention.
In this double floor structure, the foot member 1 (FIGS. 1 to 3) of the present invention and the seismic isolation device 2 (FIG. 5) are arranged on the lower floor at appropriate intervals, and the upper floor is supported by the foot member and the seismic isolation device. By doing so, it has a seismic isolation double floor where the upper floor slides relative to the lower floor during an earthquake. It is appropriate that the distance between the foot members 1 is 300 to 600 mm and the distance between the seismic isolation devices is about 2 to 3 m.

足部材１は、図１〜３の任意のものを使用できる。上床４は下地材４０の上に任意の仕上材４３を施工したものである。下地材４０が軟らかい材料である場合は、その足部材１と接触する下面に薄い鉄板などの金属板４１（図７）を貼付することが望ましい。本実施形態の場合、下地材４０は９００ｍｍ×１８００ｍｍのパーティクルボードである。   The foot member 1 can be any one of FIGS. The upper floor 4 is obtained by constructing an arbitrary finishing material 43 on the base material 40. When the base material 40 is a soft material, it is desirable to stick a metal plate 41 (FIG. 7) such as a thin iron plate on the lower surface in contact with the foot member 1. In the present embodiment, the base material 40 is a particle board of 900 mm × 1800 mm.

図６は壁７に囲まれた部屋に施工した二重床構造の説明図で、下地材４０の割り付けと足部材１、免震装置２の配置を示している。丸印が足部材１、四角印が免震装置２の位置である。各下地材４０は対角を結んだ鎖線によって×印が付されている。足部材１は４５０ｍｍ間隔、免震装置は１８００ｍｍ間隔で設置されている。足部材１の数は免震装置２の数の約７倍となっている。   FIG. 6 is an explanatory diagram of a double floor structure constructed in a room surrounded by a wall 7 and shows the allocation of the base material 40 and the arrangement of the foot member 1 and the seismic isolation device 2. A circle mark indicates the position of the foot member 1 and a square mark indicates the position of the seismic isolation device 2. Each base material 40 is marked with a cross by a chain line connecting diagonally. The foot members 1 are installed at intervals of 450 mm, and the seismic isolation devices are installed at intervals of 1800 mm. The number of foot members 1 is about seven times the number of seismic isolation devices 2.

免震装置２の上には高さ調整材として足部材６が固定されている。高さ調整材は任意の構造でよい（例えば図９の木材片６０などでもよい）が、この場合は台部と、台部から立設した支柱と、支柱上部に水平に支持される受板（木材）を有する足部材を使用し、台部は免震装置の上側部材の上面に接着固定され、受板は下地材４０に釘で固定されている。
図９は、二重床下の空間が少ない場合の例で、免震装置２の上の高さ調整材として木材片６０を使用している。 A foot member 6 is fixed on the seismic isolation device 2 as a height adjusting material. The height adjusting material may be of any structure (for example, the wood piece 60 of FIG. 9 may be used). In this case, the base part, the support column standing from the support part, and the receiving plate supported horizontally on the support part A foot member having (wood) is used, the base portion is bonded and fixed to the upper surface of the upper member of the seismic isolation device, and the receiving plate is fixed to the base material 40 with nails.
FIG. 9 shows an example in which the space under the double floor is small, and a piece of wood 60 is used as a height adjustment material on the seismic isolation device 2.

足部材１と免震装置２で支持された免震二重床は、地震時に、上床４が足部材１の球体の上をスライドすると共に、免震装置の上側部材が、転動部材の作用で、下側部材に対して水平方向に移動するため、上床４全体が下床３に対して水平方向にスライド移動し、上床の横揺れが低減される。   In the seismic isolation double floor supported by the foot member 1 and the seismic isolation device 2, the upper floor 4 slides on the sphere of the foot member 1 during the earthquake, and the upper member of the seismic isolation device acts as a rolling member. Thus, since it moves in the horizontal direction with respect to the lower member, the entire upper floor 4 slides in the horizontal direction with respect to the lower floor 3, and the roll of the upper floor is reduced.

壁７の内周に沿って適宜幅（例えば４００ｍｍ）のスライド不能な外周床５を形成している。外周床５は、壁際に固定した際根太５０（集成材）と従来周知の二重床用の足部材５１の上に床板（例えばパーティクルボード）を施工したもので、固定構造であるから地震時にスライドすることはない。   A non-slidable outer peripheral floor 5 having an appropriate width (for example, 400 mm) is formed along the inner periphery of the wall 7. The outer perimeter floor 5 is constructed by installing a floor board (eg, particle board) on a joist 50 (glued wood) when fixed to the wall and a conventionally known foot member 51 for a double floor. Never slide.

足部材１と免震装置２で支持された免震二重床は、外周床５の内側に所定間隔Ａをあけて形成されている。免震二重床と外周床５の高さは同じであるが、厳密に同じである必要はなく、施工誤差も考慮して高低差５ｍｍ以下であればよい。免震二重床と外周床５の間はスライドプレート５３で覆っている。スライドプレート５３は、例えば厚さ２ｍｍのメッキ鋼板とすることができる。スライドプレート５３の内側部分は釘などで免震二重床に固定されており、外側部分は外周床５の内周部を所定幅Ｂで覆っており、スライドプレート５３の外周部と壁７の間隔はＣとなっている。地震時に、スライドプレート５３は、免震二重床と一体となってスライドするので、免震二重床及びスライドプレート５３の上には物を置くことができ、物を置けない範囲は外周床が露出している間隔Ｃの部分だけで、非常に狭い範囲になっている。免震二重床が地震時にスライド可能な幅は、免震装置２のスライド量、間隔Ａ、間隔Ｃの内の最も小さい幅である。   The seismic isolation double floor supported by the foot member 1 and the seismic isolation device 2 is formed with a predetermined interval A inside the outer peripheral floor 5. Although the height of the seismic isolation double floor and the outer peripheral floor 5 is the same, it is not necessary to be exactly the same, and the height difference may be 5 mm or less in consideration of construction errors. A space between the seismic isolation double floor and the outer peripheral floor 5 is covered with a slide plate 53. The slide plate 53 can be a plated steel plate having a thickness of 2 mm, for example. The inner part of the slide plate 53 is fixed to the seismic isolation double floor with nails or the like, and the outer part covers the inner peripheral part of the outer peripheral floor 5 with a predetermined width B. The outer peripheral part of the slide plate 53 and the wall 7 The interval is C. Since the slide plate 53 slides integrally with the seismic isolation double floor during an earthquake, objects can be placed on the seismic isolation double floor and the slide plate 53. This is a very narrow range only at the portion of the interval C where is exposed. The width in which the seismic isolation double floor is slidable during an earthquake is the smallest of the sliding amount, interval A, and interval C of the seismic isolation device 2.

図１０、図１１は本発明の他の実施形態の二重床構造の説明図である。この二重床構造は、本発明の足部材１（図４）を５００ｍｍ間隔で、免震装置２（図５）を２０００ｍｍ間隔で下床上に配置し、該足部材及び免震装置により上床を支持することで、地震時に上床が下床に対してスライドする免震二重床を有する。下地材は５００ｍｍ角のいわゆるＯＡフロア板４２で、その上に仕上材４３が施工される。足部材１及び免震装置２は、いずれもＯＡフロア板の隅角部に配置される。足部材１の数は免震装置２の数の約７倍となっている。   10 and 11 are explanatory views of a double floor structure according to another embodiment of the present invention. In this double floor structure, the foot members 1 (FIG. 4) of the present invention are arranged on the lower floor at intervals of 500 mm, and the seismic isolation devices 2 (FIG. 5) are arranged on the lower floor at intervals of 2000 mm. By supporting, it has a seismic isolation double floor where the upper floor slides relative to the lower floor during an earthquake. The base material is a so-called OA floor plate 42 of 500 mm square, and a finishing material 43 is applied thereon. The foot member 1 and the seismic isolation device 2 are both arranged at the corners of the OA floor board. The number of foot members 1 is about seven times the number of seismic isolation devices 2.

本実施形態において、足部材１の受板は、従来周知のＯＡフロア用足部材の受板と同じものであるので、ＯＡフロア板の隅角部に固定される。免震装置２の上には高さ調整材として足部材６が固定されている。足部材６は従来周知のＯＡフロア用足部材で、受板がＯＡフロア板の隅角部に固定される。   In this embodiment, since the receiving plate of the foot member 1 is the same as the receiving plate of the conventionally known foot member for OA floor, it is fixed to the corner portion of the OA floor plate. A foot member 6 is fixed on the seismic isolation device 2 as a height adjusting material. The foot member 6 is a well-known foot member for an OA floor, and a receiving plate is fixed to a corner portion of the OA floor plate.

足部材１と免震装置２で支持された免震二重床は、地震時に、足部材１が球体の作用で下床３の上をスライドすると共に、免震装置の上側部材が、転動部材の作用で、下側部材に対して水平方向に移動するため、上床４全体が下床３に対して水平方向にスライド移動し、上床の横揺れが低減される。   In the seismic isolation double floor supported by the foot member 1 and the seismic isolation device 2, the foot member 1 slides on the lower floor 3 by the action of a sphere during the earthquake, and the upper member of the seismic isolation device rolls. Since the member moves in the horizontal direction with respect to the lower member, the entire upper floor 4 slides in the horizontal direction with respect to the lower floor 3, and the roll of the upper floor is reduced.

この実施形態において、外周床５及びスライドプレート５２の構成は、前記図６〜図８の実施形態と同じである。   In this embodiment, the configurations of the outer peripheral floor 5 and the slide plate 52 are the same as those in the embodiment shown in FIGS.

１ 足部材
１０ 台部
１０ａ 外周凸部
１０ｂ 凹部
１１ 支柱
１２ 受板
１２ａ 外周凸部
１２ｂ 中央凸部
１２ｃ ナット部
１２ｄ 凹部
１３ 緩み止めナット
１４ 球体
１５ カバー
１５ａ 穴２
２ 免震装置
２１ 上側部材
２１ａ 曲面状凹部
２２ 下側部材
２２ａ 曲面状凹部
２３ 転動部材
３ 下床
４ 上床
４０ 下地材
４１ 金属板
４２ ＯＡフロア板
４３ 仕上材
５ 外周床
５０ 際根太
５１ 足部材
５２ 床板
５３ スライドプレート
６ 足部材
６０ 木材片
７ 壁 DESCRIPTION OF SYMBOLS 1 Foot member 10 Base part 10a Peripheral convex part 10b Concave part 11 Support | pillar 12 Support plate 12a Peripheral convex part 12b Center convex part 12c Nut part 12d Concave part 13 Loosening prevention nut 14 Sphere 15 Cover 15a Hole 2
2 Seismic isolation device 21 Upper member 21a Curved concave portion 22 Lower member 22a Curved concave portion 23 Rolling member 3 Lower floor 4 Upper floor 40 Base material 41 Metal plate 42 OA floor plate 43 Finishing material 5 Outer floor 50 50 joist 51 Foot member 52 Floor board 53 Slide plate 6 Foot member 60 Wood piece 7 Wall

Claims (8)

下床上に多数設置されて上床を支持する二重床の足部材であって、
台部と、台部から立設した支柱と、支柱上部に水平に支持される受板を有し、
該受板上面に球体を回転可能に装備し、該球体の頂部で上床の下面を支持することで、上床が足部材に対してスライド可能となることを特徴とする足部材。 A double floor foot member that is installed on the lower floor and supports the upper floor,
It has a base part, a support column erected from the support part, and a receiving plate supported horizontally on the upper part of the support element.
A foot member, wherein a spherical body is rotatably mounted on the upper surface of the receiving plate, and the upper floor is slidable with respect to the foot member by supporting the lower surface of the upper floor at the top of the spherical body. 前記受板の上面に、前記球体の移動を制限する凸部又は凹部を有する請求項１に記載の足部材。 The foot member according to claim 1, wherein the upper surface of the receiving plate has a convex portion or a concave portion that restricts movement of the sphere. 下床上に多数設置されて上床を支持する二重床の足部材であって、
台部と、台部から立設した支柱と、支柱上部に水平に支持される受板を有し、
前記台部の底面に球体を回転可能に装備し、該球体の下端が下床面に接することで、足部材が下床上をスライド可能となることを特徴とする足部材。 A double floor foot member that is installed on the lower floor and supports the upper floor,
It has a base part, a support column erected from the support part, and a receiving plate supported horizontally on the upper part of the support element.
A foot member characterized in that a sphere is rotatably mounted on the bottom surface of the platform, and the lower end of the sphere is in contact with the lower floor surface so that the foot member can slide on the lower floor. 前記台部の底面に、前記球体の移動を制限する凸部又は凹部を有する請求項３に記載の足部材。 The foot member according to claim 3 which has a convex part or a crevice which restricts movement of the above-mentioned spherical body in the bottom of the above-mentioned base part. 前記台部の底面が、前記球体の落下を防止するカバーで覆われている請求項３又は４に記載の足部材。 The foot member according to claim 3 or 4, wherein a bottom surface of the base portion is covered with a cover that prevents the spherical body from falling. 請求項１〜５に記載のいずれかの足部材と、
内面に曲面状凹部を有する上側部材と下側部材が、前記凹部内にタブレット形の転動部材が装入されていることで間隔を有して上下に対向している免震装置を、適宜間隔で下床上に配置し、該足部材及び免震装置により上床を支持することで、地震時に上床が下床に対してスライドすることを特徴とする免震二重床。 Any one of the foot members according to claim 1;
A seismic isolation device having an upper member and a lower member each having a curved concave portion on the inner surface and facing the upper and lower sides with a gap by inserting a tablet-shaped rolling member in the concave portion, as appropriate. A seismic isolation double floor characterized by being arranged on the lower floor at intervals and supporting the upper floor by the foot member and the seismic isolation device so that the upper floor slides relative to the lower floor during an earthquake. 前記足部材の数が、前記免震装置の数の５倍以上である請求項６に記載の免震二重床。 The seismic isolation double floor according to claim 6, wherein the number of the foot members is five times or more the number of the seismic isolation devices. 壁の内周に沿って任意幅のスライド不能な外周床を形成し、該外周床と同じ高さの請求項６又は７に記載の免震二重床を、外周床の内側に、所定間隔をあけて形成し、免震二重床と外周床の間をスライドプレートで覆った二重床構造であって、スライドプレートが前記免震二重床に固定されていると共に、前記外周床の内周部を覆っており、地震時に前記免震二重床及びスライドプレートが外周床に対してスライドすることを特徴とする二重床構造。 A non-slidable outer perimeter floor having an arbitrary width is formed along the inner circumference of the wall, and the seismic isolation double floor according to claim 6 or 7 having the same height as the outer perimeter floor is disposed at a predetermined interval inside the outer perimeter floor. A double floor structure in which a space between the seismic isolation double floor and the outer peripheral floor is covered with a slide plate, the slide plate being fixed to the seismic isolation double floor, and the inner periphery of the outer peripheral floor A double floor structure characterized in that the seismic isolation double floor and the slide plate slide relative to the outer floor during an earthquake.
JP2012107273A 2012-05-09 2012-05-09 Foot member and base-isolated double floor Pending JP2013234485A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017082569A (en) * 2015-10-30 2017-05-18 株式会社金澤製作所 Seismically-isolated free access floor
JP2017145674A (en) * 2016-02-15 2017-08-24 株式会社金澤製作所 Base-isolated free-access floor
JP7457999B2 (en) 2019-11-18 2024-03-29 株式会社金澤製作所 Seismic isolation floor connection structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017082569A (en) * 2015-10-30 2017-05-18 株式会社金澤製作所 Seismically-isolated free access floor
JP2017145674A (en) * 2016-02-15 2017-08-24 株式会社金澤製作所 Base-isolated free-access floor
JP7457999B2 (en) 2019-11-18 2024-03-29 株式会社金澤製作所 Seismic isolation floor connection structure

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