JPH0285461A - Earthquake proofing device for floor - Google Patents
Earthquake proofing device for floorInfo
- Publication number
- JPH0285461A JPH0285461A JP23451988A JP23451988A JPH0285461A JP H0285461 A JPH0285461 A JP H0285461A JP 23451988 A JP23451988 A JP 23451988A JP 23451988 A JP23451988 A JP 23451988A JP H0285461 A JPH0285461 A JP H0285461A
- Authority
- JP
- Japan
- Prior art keywords
- sliding
- floor
- stopper
- sliding surface
- support member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 230000008602 contraction Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- WMVRXDZNYVJBAH-UHFFFAOYSA-N dioxoiron Chemical compound O=[Fe]=O WMVRXDZNYVJBAH-UHFFFAOYSA-N 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Floor Finish (AREA)
- Vibration Dampers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は床免震装置に関し、特に水平方向の振動時に
は建物躯体に対して床を絶縁することにより建物躯体の
みを振動させて床への振動伝達を防止する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a floor seismic isolation device, and in particular, in the case of horizontal vibration, the floor is insulated from the building frame, so that only the building frame is vibrated and the vibration is applied to the floor. Prevent vibration transmission.
従来の床免震装置としては、昭和５９年２月に株式会社
大林組が発行した「出御証券システムセンター新築工事
ダイナミック・フロア・システム 取扱い説明書」に
記載されたようなものがある。この装置は、建物躯体を
なすスラブの上面に置いた滑り板と、その上面に摺動自
在に置いた底板と、床の下側に固定した外筒と、底板の
上側に固定して前記外筒に入れ子式に内嵌される内筒と
、内筒と外筒との内部に設置されて上下方向に伸縮する
垂直コイルばねと、外筒と底板との間に設置された垂直
ダンパーと、内筒とスラブとの間に四方に向けて架設さ
れた４本の水平コイルばねとがらなり、上下方向の振動
は垂直コイルばねと垂直ダンパーの伸縮によって減衰さ
せる一方、水平方向の振動は水平コイルばねの伸縮と、
滑り板及び底板間の摩擦力によって減衰させるものであ
る。Conventional floor seismic isolation devices include the one described in the ``Idemi Securities System Center New Construction Dynamic Floor System Instruction Manual'' published by Obayashi Corporation in February 1980. This device consists of a sliding plate placed on the top surface of a slab forming the building frame, a bottom plate slidably placed on the top surface, an outer cylinder fixed to the underside of the floor, and an outer cylinder fixed to the top of the bottom plate. an inner cylinder that is nested inside the cylinder, a vertical coil spring that is installed inside the inner cylinder and the outer cylinder and expands and contracts in the vertical direction, and a vertical damper that is installed between the outer cylinder and the bottom plate; There are four horizontal coil springs installed in all directions between the inner cylinder and the slab. Vertical vibrations are damped by the expansion and contraction of the vertical coil springs and vertical dampers, while horizontal vibrations are damped by the horizontal coil springs. The expansion and contraction of
Attenuation is achieved by the frictional force between the sliding plate and the bottom plate.
前記垂直方向の振動吸収手段は、実間５８〜４４３３４
号公報にも開示され、また前記水平方向の振動吸収手段
は、特開昭６２−８６２６５号公報にも開示されている
。The vertical vibration absorbing means has a diameter of 58 to 44334.
The horizontal vibration absorbing means is also disclosed in Japanese Patent Application Laid-open No. 86265/1983.
しかしながら、前記取扱い説明書記載の従来技術にあっ
ては、部品点数が多いことと、内外の両筒及びこれらの
内部の垂直コイルばねを使用していることによって装置
の高さが大となり、建物の床下に大空間が必要になると
いう不具合があり、また四方に水平コイルばねを張設し
ているために所要面積も大になるという不具合がある。However, in the conventional technology described in the instruction manual, the height of the device is large due to the large number of parts and the use of both the inner and outer cylinders and the vertical coil springs inside these cylinders. There is a problem that a large space is required under the floor of the machine, and there is also a problem that the required area is large because horizontal coil springs are installed on all sides.
前記従来技術は、建物躯体に対して床を弾性的に支持し
、この弾性力を所定値にセｙ トすることにより床を免
震するという思想のもとに開発されたものであり、その
結果、前記のような大形且つ複雑な構成となったもので
あるが、発明者等が三軸振動台を用いて実験した結果、
水平方向の振動に対しては、床に対して建物躯体を自由
に滑らせるだけで床の振動を防止できることが分った。The above-mentioned conventional technology was developed based on the idea of seismically isolating the floor by elastically supporting the floor against the building frame and setting this elastic force to a predetermined value. As a result, the structure was large and complicated as described above, but as a result of experiments conducted by the inventors using a three-axis vibration table,
It was found that horizontal vibrations can be prevented simply by allowing the building frame to slide freely on the floor.
その理由は、前記三軸振動台を使用した実験によれば、
地震の開始時には大きな振動力が建物に作用して、床に
対して建物躯体が滑り始めるが、振動方向とは逆方向の
反力が数秒後には作用して前記振動力が次第に減衰され
るからである。従って、免震装置には地震力を減衰させ
るような積極的な減衰装置は必要がなく、建物胴体を床
に対して水平方向に自由に滑らせておけば、床には地震
力か伝達されることがなく、またその間に前記理由によ
って地震力は次第に減衰され、床に対して建物躯体は元
の位置に復帰して静止することが分かった。The reason for this is, according to an experiment using the three-axis shaking table mentioned above.
At the beginning of an earthquake, a large vibration force acts on the building and the building frame begins to slide against the floor, but a reaction force in the opposite direction to the vibration direction acts after a few seconds and the vibration force is gradually attenuated. It is. Therefore, a seismic isolation device does not require an active damping device to attenuate seismic force; if the building body is allowed to slide freely horizontally on the floor, seismic force will not be transmitted to the floor. It was found that the seismic force was gradually attenuated due to the above reasons, and the building frame returned to its original position relative to the floor and came to rest.
かかる知見を基礎としてこの発明が完成されたものであ
り、この発明は、構造が簡単で特に上下方向の寸法を小
さくできて床下のふところを小さくし、以て階高を小さ
くすることができる床免震装置とすることを目的として
いる。This invention was completed on the basis of such knowledge, and this invention provides a floor that has a simple structure and can be made particularly small in vertical dimensions, making it possible to reduce the area under the floor, thereby reducing the floor height. The purpose is to use it as a seismic isolation device.
この発明の床免震装置は、建物躯体側とその上に載置さ
れる床部材側との両者のうちの一方に形成された水平な
滑り面と、前記建物躯体側と床部材側との両者のうちの
前記滑り面が形成された側とは別の側に固定され且つ先
端面が前記滑り面に面どうしで摺接して床部材側の荷重
を建物躯体側に支承させる滑り支承部材と、この滑り支
承部材の外周を間隔をおいて囲んで前記滑り面に突設さ
れたストッパと、このストッパにおける前記滑り支承部
材側の位置に配置されたゴム質の緩衝材と、前記ストッ
パに囲まれた領域を覆い、前記建物躯体側と床部材側と
の両者のうちの前記滑り面が形成された側に外端が固定
され、且つ前記両者のうちの滑り支承部材が固定された
側に内端が固定されたゴム質の弾性薄板と、を備えてな
る。The floor seismic isolation device of the present invention has a horizontal sliding surface formed on one of the building frame side and the floor member side placed thereon, and a horizontal sliding surface formed on one side of the building frame side and the floor member side. A sliding support member that is fixed to a side other than the side on which the sliding surface is formed between the two, and whose distal end surface slides in surface-to-surface contact with the sliding surface to support the load on the floor member side on the building frame side. , a stopper surrounding the outer periphery of the sliding support member at intervals and protruding from the sliding surface; a rubber cushioning material disposed at a position on the sliding support member side of the stopper; and a stopper surrounded by the stopper. the outer end is fixed to the side on which the sliding surface is formed of both the building frame side and the floor member side, and the outer end is fixed to the side on which the sliding support member is fixed of both the building frame side and the floor member side. A rubber elastic thin plate having a fixed inner end.
前記滑り支承部材は、金属その他の材料により構成され
た剛体としてもよいし、また複数のゴム質の弾性材と複
数の金属板とを上下方向に積層してなるものであっても
よい。The sliding support member may be a rigid body made of metal or other material, or may be formed by laminating a plurality of rubber elastic materials and a plurality of metal plates in the vertical direction.
平常時には、滑り支承部材によって床部材側の荷重が建
物躯体側に支持されるとともに、滑り支承部材の先端面
と滑り面との間の摩擦力によって両者は水平方向にも一
体をなしている。そして地震力によって建物が水平方向
に振動すると、地震力が小さくて前記振動力が滑り面と
滑り支承部材先端面との間の摩擦力以下にあるときには
、まだ、床部材側と建物躯体側は水平方向に一体をなし
ているが、地震力が大きくて前記振動力が前記摩擦力を
超えると、滑り面と滑り支承部材先端面との間に滑りが
生じて、建物躯体側が振動する一方床部材側には振動が
伝達されない。このため、建物躯体側は振動するものの
床部材側は免震されることになる。ここでは滑りによっ
て振動力の伝達を遮断しているために、床上部材が共振
することもない。Under normal conditions, the load on the floor member side is supported by the sliding bearing member toward the building frame, and the frictional force between the tip end surface of the sliding bearing member and the sliding surface also holds them together in the horizontal direction. When the building vibrates horizontally due to an earthquake force, when the seismic force is small and the vibration force is less than the frictional force between the sliding surface and the tip surface of the sliding support member, the floor component side and the building frame side still However, if the seismic force is large and the vibration force exceeds the frictional force, slippage will occur between the sliding surface and the end surface of the sliding support member, causing the building frame to vibrate while the floor Vibration is not transmitted to the member side. Therefore, although the building frame side vibrates, the floor member side is seismically isolated. Here, since the transmission of vibrational force is blocked by sliding, the floor member does not resonate.
このとき、床部材側に対する建物躯体側の移動量が大き
い場合には、滑り支承部材がストッパに当たって前記相
対移動量を規制する。ここで、ストッパ内周には緩衝材
が配置されるために、ストッパに対する滑り支承部材の
衝撃は緩衝され、以て床部材側の振動が防止される。At this time, if the amount of movement of the building frame side with respect to the floor member side is large, the sliding support member hits the stopper and restricts the relative movement amount. Here, since a cushioning material is disposed on the inner periphery of the stopper, the impact of the sliding support member on the stopper is buffered, thereby preventing vibrations on the floor member side.
また、前記振動により滑り支承部材と滑り面とが相対的
に滑りを生じると、前記ゴム質の弾性薄板が部分的に伸
縮して、滑り支承部材と滑り面との相対位置の復元力が
作用する。地震力によって相対的に振動する両者が振動
終期には地震発生前の位置に復元するものの、ゴム質の
弾性薄板の前記復元力によって、相対振動する両者の復
元を補助するものである。さらに、ゴム質の弾性薄板は
ストッパに囲まれた領域を覆っているために、滑り面に
対するダストカバーをなす。したがって滑り面に塵埃が
付着することを防止するために、滑り面の滑り性能は常
時同一状態に維持される。Further, when the sliding bearing member and the sliding surface cause relative sliding due to the vibration, the rubber elastic thin plate partially expands and contracts, and a restoring force acts on the relative position of the sliding bearing member and the sliding surface. do. The two parts vibrating relative to each other due to the seismic force return to their pre-earthquake positions at the end of the vibration, but the restoring force of the rubber elastic thin plate assists the restoring of the two parts vibrating relative to each other. Furthermore, since the rubber elastic thin plate covers the area surrounded by the stopper, it forms a dust cover for the sliding surface. Therefore, in order to prevent dust from adhering to the sliding surface, the sliding performance of the sliding surface is always maintained in the same state.
前記滑り支承部材を、金属その他の材料により構成され
た剛体とした場合で、地震力が小さくて滑り支承部材の
先端面と滑り面との間の摩擦力によって、両者間に滑り
が生じていないときには、その振動力は床部材側に伝達
される。このように床部材側において小振動力の入力が
許容される場合には、滑り支承部材を剛体とすればよい
。またこれを複数のゴム質の弾性材と複数の金属板とを
上下方向に積層してなるものにより構成すると、滑り支
承部材は滑り面との間に滑りが生じていない場合でも、
その弾性変形によって振動を吸収するから、床部材側へ
の振動入力が抑制される。このゴム質の弾性体を積層し
た場合には、その伸縮によって垂直方向の振動も吸収さ
れる。In the case where the sliding bearing member is a rigid body made of metal or other material, the seismic force is small and the frictional force between the tip surface of the sliding bearing member and the sliding surface does not cause slippage between the two. Sometimes, the vibration force is transmitted to the floor member side. In this way, if input of a small vibration force is allowed on the floor member side, the sliding support member may be made of a rigid body. Furthermore, if this is constructed by laminating a plurality of rubber elastic materials and a plurality of metal plates in the vertical direction, the sliding support member will be able to move even when there is no slippage between it and the sliding surface.
Since vibrations are absorbed by the elastic deformation, vibration input to the floor member side is suppressed. When these rubber-like elastic bodies are laminated, vibrations in the vertical direction are also absorbed by their expansion and contraction.
なお、滑り面と滑り支承部材先端面との摩擦力は、免震
させる振動力の大きさや床部材側の質量等の条件によっ
て設定されるものであみで、摩擦力の設定は摩擦部位の
材質や接触面積を選択することによって決定する。また
、滑り面に対する滑り支承部材の滑り量は前記実験によ
り、±１５０１１（振幅が３０Ｏｎ）とすれば予想され
る地震においては充分であることが分かっている。The frictional force between the sliding surface and the tip surface of the sliding bearing member is determined by conditions such as the magnitude of the vibration force to be seismically isolated and the mass of the floor member.The setting of the frictional force is determined by the material of the frictional part. or by selecting the contact area. In addition, it has been found through the above-mentioned experiment that the amount of slippage of the sliding support member relative to the sliding surface is set to ±15011 (amplitude of 30 On), which is sufficient for expected earthquakes.
さらに、この発明では建物躯体側と床部材側の接触が、
滑り面と滑り支承部材先端面との間の面どうしの滑り接
触であるために、両者間には摩擦力が作用しているから
、床への貨物の搬入や人の歩行により床に水平力が作用
しても、床が移動することもないし、また地震力による
前記滑りが発生したときにも騒音の発生がない。Furthermore, in this invention, the contact between the building frame side and the floor member side is
Due to the surface-to-surface sliding contact between the sliding surface and the end surface of the sliding support member, a frictional force is exerted between the two, so horizontal force is applied to the floor when cargo is carried onto the floor or when a person walks. The floor does not move even when earthquake forces act on the floor, and no noise is generated even when the above-mentioned sliding occurs due to seismic force.
第１図はこの発明の実施例の全体を示す分解斜視図であ
り、第２図（ａ）はその要部断面拡大図である。ここで
、第２図（ａｌに示す１が建物躯体の一部であるスラブ
であり、このスラブ１は第１図においては省略しである
。FIG. 1 is an exploded perspective view showing the entire embodiment of the present invention, and FIG. 2(a) is an enlarged sectional view of the main part thereof. Here, 1 shown in FIG. 2 (al) is a slab that is a part of the building frame, and this slab 1 is omitted in FIG. 1.
スラブ１の上面に滑り板２が固定され、この滑り板２の
表面が摩擦係数の小さい水平な滑り面３をなすが、滑り
板２の表面に特定の摩擦係数を有する板又は膜を配置し
てその表面を滑り面３とすることもできる。例えば、四
ふっ化エチレン樹脂からなる膜又はこれに黒鉛、ガラス
繊維、二酸化鉄などを混入した樹脂の膜とする。滑り板
２の滑り面３には、内径が３６０ｍｍ程度で高さが５０
＋＋ｍ程度のリング状のストッパ４が固定され、このス
トッパ４の内周にゴム質の緩衝材５が配置される。A sliding plate 2 is fixed to the upper surface of the slab 1, and the surface of this sliding plate 2 forms a horizontal sliding surface 3 with a small friction coefficient.A plate or film having a specific friction coefficient is arranged on the surface of the sliding plate 2. The surface thereof can also be used as the sliding surface 3. For example, it may be a film made of tetrafluoroethylene resin or a resin film in which graphite, glass fiber, iron dioxide, etc. are mixed. The sliding surface 3 of the sliding plate 2 has an inner diameter of about 360 mm and a height of 50 mm.
A ring-shaped stopper 4 of about ++m is fixed, and a rubber cushioning material 5 is arranged on the inner periphery of this stopper 4.
６は床部材であり、平行な大梁７と、大梁７間に架設さ
れた複数の小梁８と、これらの上に多数の支柱９を介し
て配置された床パネル１ｏとがらなり、かかる床部材６
の上面には、この実施例では電子計算機１１が載置され
ている。電子計算機１１は一般に２００（±３０）ガル
で停止するようにフェイルセーフが機能するため、この
実施例では１００ガルの振動力により、後述するように
滑り支承部材１３に対して滑り面３が滑り始める構成と
している。Reference numeral 6 denotes a floor member, which is made up of parallel large beams 7, a plurality of small beams 8 installed between the large beams 7, and a floor panel 1o placed on these via a large number of supports 9. 6
In this embodiment, an electronic computer 11 is placed on the top surface of the computer. Since the computer 11 generally has a fail-safe function such that it stops at 200 (±30) gals, in this embodiment, the sliding surface 3 slides against the sliding support member 13 due to the vibration force of 100 gals, as will be described later. This is a starting configuration.
床部材６下面に固定された板材１２の下面には、滑り支
承部材１３がそのフランジ部においてボルト等め固着具
によって固着される。滑り支承部材１３は全体の高さが
５０〜１００ｉｎ程度であり、先端面が前記滑り面３に
、面による滑り接触するものであって、フランジ部の下
側において直径６０ ｍｍ程度の円柱状をなし、前記ス
トッパ４の内側中心において滑り面３に接触している。A sliding support member 13 is fixed to the lower surface of the plate member 12 fixed to the lower surface of the floor member 6 at its flange portion using a fastener such as a bolt. The sliding bearing member 13 has a total height of about 50 to 100 inches, and its tip surface makes sliding contact with the sliding surface 3, and has a cylindrical shape with a diameter of about 60 mm on the lower side of the flange portion. None, the inner center of the stopper 4 contacts the sliding surface 3.
而して滑り支承部材１３の外周とストッパ４の内面との
間には１５０龍程度の間隔がある。また、滑り支承部材
１３の高さは前記程度であるため、これに滑り板２の高
さを加えた分がこの実施例における免震装置の高さ寸法
となる。滑り板２の高さを２゜１ｍとすれば、免震装置
の高さ寸法は７０〜１２０鰭程度となる。Thus, there is a gap of about 150 mm between the outer periphery of the sliding support member 13 and the inner surface of the stopper 4. Furthermore, since the height of the sliding support member 13 is approximately the same as described above, the height of the seismic isolation device in this embodiment is obtained by adding the height of the sliding plate 2 to this height. If the height of the sliding plate 2 is 2.1 m, the height of the seismic isolation device will be about 70 to 120 fins.
前記ストッパ４の外周（上面でもよい）と、滑り支承部
材１３のフランジ部外周との間にはゴム質の弾性薄板１
４が張り渡され、これによりストッパ４内部が覆われて
いる。弾性薄板１４は、この実施例では傘状をなし、そ
の中心側のボス部が滑り支承部材１３に外嵌され、その
外周側がストッパ４に外嵌されている。なお、弾性薄板
１４は床部材６側においては板材１２に固定され、また
スラブ１側においてはス１〜ソバ４外側で滑り面３に固
定されてもよい。A rubber elastic thin plate 1 is disposed between the outer periphery (or the upper surface) of the stopper 4 and the outer periphery of the flange portion of the sliding support member 13.
4 is stretched, thereby covering the inside of the stopper 4. In this embodiment, the elastic thin plate 14 has an umbrella shape, and its central boss portion is fitted onto the sliding support member 13, and its outer peripheral side is fitted onto the stopper 4. The elastic thin plate 14 may be fixed to the plate material 12 on the floor member 6 side, and may be fixed to the sliding surface 3 on the outside of the slabs 1 to 4 on the slab 1 side.
この弾性薄板１４には振動を積極的に減衰するための機
能を持たせていないため、滑り面３に対する滑り支承部
材１３の移動の抵抗力が大きくならないように、前記移
動時のばね定数を小さくしである。Since this elastic thin plate 14 does not have a function to actively damp vibrations, the spring constant during the movement is made small so that the resistance force of the movement of the sliding support member 13 against the sliding surface 3 does not become large. It is.
なお、床部材６を構成する平行な大梁７の両端間には、
中央が下側に凹陥された曲げ板１５が配置され、その凹
部には給電又は送信用のケーブル１６が挿通され、さら
に凹部の上には他の大梁７゜小梁８上面と同一面をなす
水平板１７が着脱自在に架設される。前記凹部にケーブ
ル１６を配設することによって、電子計算機１１とケー
ブル１６との距離を確保し、以てノイズによる電子計算
機１１の誤作動防止を図るとともに、ケーブル１６を電
子計算機１１に向けて屈曲するときの曲率半径を大きく
し得て光通信ケーブルの配線を容易にしている。In addition, between both ends of the parallel girder 7 that constitutes the floor member 6,
A bent plate 15 whose center is recessed downward is arranged, and a cable 16 for feeding or transmitting power is inserted into the recess, and above the recess is a bent plate 15 that is flush with the upper surface of the other 7° girder and the small beam 8. A horizontal plate 17 is removably installed. By arranging the cable 16 in the recess, a distance between the computer 11 and the cable 16 is secured, thereby preventing the computer 11 from malfunctioning due to noise, and the cable 16 is bent toward the computer 11. The radius of curvature can be increased when optical communication cables are wired, making it easier to wire optical communication cables.
第１図中１８はケーブル１９を巻き溜めるためのトレイ
であって電気絶縁性又は電磁波シールド性に冨む材質か
らなり、小梁８間に載置される。Reference numeral 18 in FIG. 1 denotes a tray for storing the cable 19, which is made of a material rich in electrical insulation or electromagnetic shielding properties, and is placed between the small beams 8.
また、２０．２１も前記トレイ１８と同様のトレイであ
って、集中コンセント２２や、電子計算機１１の変復調
器２３が夫々配置される。Also, trays 20 and 21 are similar to the tray 18, and a central outlet 22 and a modem 23 for the computer 11 are arranged therein.
また前記ケーブル１６．１９類を床パネル１０上面に通
過させるために、床パネル１０には凹欠部１０ａが形成
されている。Further, in order to allow the cables 16 and 19 to pass through the upper surface of the floor panel 10, a recessed part 10a is formed in the floor panel 10.
前記のような免震装置は、この実施例では床部材６下面
の四隅に配置されるが、免震装置の荷重支持性能や床部
材６の形状や荷重等の条件により配置する免震装置の数
及び位置は適宜選択されるものとする。In this embodiment, the seismic isolation devices described above are placed at the four corners of the lower surface of the floor member 6, but the number of seismic isolation devices to be placed may vary depending on the load supporting performance of the seismic isolation device, the shape and load of the floor member 6, etc. The number and position shall be selected appropriately.
次に、前記免震装置の動作を説明する。Next, the operation of the seismic isolation device will be explained.
地震の発生していない平常時にば、滑り支承部材１３に
よって床部材６側の荷重が建物躯体側であるスラブ１に
支持されるとともに、滑り支承部材１３の先端面と滑り
面３との間の摩擦力によって両者は水平方向にも一体を
なしている。そして地震力によって建物が水平方向に振
動すると、地震力が小さくて前記振動力が滑り面３と滑
り支承部材１３先端面との間の摩擦力以下にあるときに
は、まだ、床部材Ｇ側とスラブＬ側は水平方向に一体を
なしているが、地震力が大きくて前記振動力が前記摩擦
力を超えると、滑り面３と滑り支承部材１３先端面との
間に滑りが生じて、スラブ１側が振動する一方、床部材
６側には振動は伝達されない。このため、スラブ１側は
振動するものの床部材６側は免震されることになる。し
たがって床部材６上面に設置される電子計算機１１には
振動力は伝達されることがない。ここでは、滑りによっ
て振動力の伝達を遮断しているために、床上部材が共振
することもない。また、滑り面３に対して滑り支承部材
１３先端面を面接触させているために、ここには摩擦力
が作用しているから、微小な震動では前記滑りは発生し
ない。このため、床部材６上面での人の歩行や機器の搬
入時に床部材６に水平方向の力が作用しても前記滑りは
発生しない。この点、床部材６側とスラブ１側との間に
転がり接触する部品を介在させた場合のように、小さい
水平力によっても床部材６が過敏に移動することがない
。During normal times when no earthquake occurs, the load on the floor member 6 side is supported by the sliding bearing member 13 on the slab 1, which is the building frame side, and the load between the tip surface of the sliding bearing member 13 and the sliding surface 3 is supported by the sliding bearing member 13. The two are also integrated in the horizontal direction due to frictional force. When the building vibrates in the horizontal direction due to an earthquake force, when the earthquake force is small and the vibration force is less than the frictional force between the sliding surface 3 and the tip surface of the sliding support member 13, the floor member G side and the slab The L side is integrated in the horizontal direction, but if the seismic force is large and the vibration force exceeds the frictional force, slippage will occur between the sliding surface 3 and the tip surface of the sliding support member 13, and the slab 1 While the side vibrates, the vibration is not transmitted to the floor member 6 side. Therefore, although the slab 1 side vibrates, the floor member 6 side is seismically isolated. Therefore, the vibration force is not transmitted to the computer 11 installed on the upper surface of the floor member 6. Here, since the transmission of vibrational force is interrupted by the sliding, the floor member does not resonate. Further, since the tip end surface of the sliding support member 13 is brought into surface contact with the sliding surface 3, a frictional force acts thereon, so that the above-mentioned slipping does not occur due to minute vibrations. Therefore, even if a horizontal force is applied to the floor member 6 when a person walks on the upper surface of the floor member 6 or when equipment is carried in, the slipping does not occur. In this respect, the floor member 6 does not move sensitively even when a small horizontal force is applied, unlike in the case where a part that makes rolling contact is interposed between the floor member 6 side and the slab 1 side.
なお、床上に据え付けられる形式の電子計算機１１は、
一般に２００ガル（±３０ガル）程度の震動で停止する
ようにフエルセイフが作動するため、この実施例では１
００ガル程度以上の震動によって滑り支承部材１３先端
面と滑り面３とに滑りが生じるようにしである。なお、
この滑りを生じる震動力は、床部材６に設置される機器
の種類に応じて設定されるものとする。Note that the electronic computer 11 that is installed on the floor is
Generally, the safety is activated so as to stop at a vibration of about 200 gal (±30 gal), so in this example, 1
The structure is such that the distal end surface of the sliding support member 13 and the sliding surface 3 slip due to vibrations of approximately 0.00 gal or more. In addition,
It is assumed that the seismic force that causes this slippage is set depending on the type of equipment installed on the floor member 6.
このとき、床部材６に対するスラブ１の移動量が大きい
場合には、滑り支承部材Ｉ３がストッパ４に当たって前
記相対移動を規制する。ここで、ストッパ４内周には緩
衝材５が配置されているために、その弾性変形によって
ストッパ４に対する滑り支承部材１３の衝撃は緩和され
て床部材６の振動が防止される。At this time, if the amount of movement of the slab 1 with respect to the floor member 6 is large, the sliding support member I3 hits the stopper 4 to restrict the relative movement. Here, since the cushioning material 5 is disposed on the inner periphery of the stopper 4, the impact of the sliding support member 13 on the stopper 4 is alleviated by its elastic deformation, and vibration of the floor member 6 is prevented.
また、前記振動により滑り支承部材１３と滑り面３とが
相対的に滑りを生じると、前記弾性薄板１４が伸縮して
、滑り支承部材１３と滑り面３との相対位置の復元力が
生じる。地震力によって相対的に振動する両者が振動終
期には地震発生前の位置に復元するものの、ゴム質の弾
性薄板１４の前記復元力によって、相対的に振動する両
者の復元を補助し、可及的に相対位置の復元を促進する
。Furthermore, when the sliding bearing member 13 and the sliding surface 3 cause relative sliding due to the vibration, the elastic thin plate 14 expands and contracts, and a restoring force is generated in the relative position of the sliding bearing member 13 and the sliding surface 3. Although the two parts vibrating relative to each other due to the earthquake force return to their pre-earthquake positions at the end of the vibration, the restoring force of the rubber elastic thin plate 14 assists the restoring of the two parts vibrating relative to each other, and the facilitates restoration of relative position.
さらに、弾性薄板１４は滑り面３におけるストッパ４に
囲まれた部分を覆っているために滑り面３に対するダス
トカバーをなす。したがって滑り面３に塵埃が付着する
ことを防止するために滑り面３の滑り性能は常時同一状
態に維持される。Further, since the elastic thin plate 14 covers the portion of the sliding surface 3 surrounded by the stopper 4, it forms a dust cover for the sliding surface 3. Therefore, in order to prevent dust from adhering to the sliding surface 3, the sliding performance of the sliding surface 3 is always maintained in the same state.
前記滑り支承部材１３を金属その他の剛体によって構成
した場合には、地震力が小さくて滑り支承部材１３の先
端面と滑り面３との間の摩擦力によって両者間に滑りが
生じていないときには、その振動力は床部材側に伝達さ
れる。このように床部材側において小振動力の入力か許
容される場合には、滑り支承部材１３を剛体とすればよ
い。In the case where the sliding bearing member 13 is made of metal or other rigid body, when the seismic force is small and no sliding occurs between the tip surface of the sliding bearing member 13 and the sliding surface 3 due to the frictional force between the two, The vibration force is transmitted to the floor member side. In this way, if a small vibration force is allowed to be input on the floor member side, the sliding support member 13 may be made of a rigid body.
また滑り支承部材１３を複数のゴム質の弾性体と複数の
金属板とを上下方向に積層してなるものにより構成する
と、滑り支承部材１３は滑り面３との間に滑りが生じて
いない場合にも、その弾性変形によって振動を吸収する
から床部材６側への振動入力が抑制される。このゴム質
の弾性体を積層した場合には、その伸縮によって垂直方
向の振動も吸収される。Furthermore, if the sliding bearing member 13 is constructed by stacking a plurality of rubber elastic bodies and a plurality of metal plates in the vertical direction, the sliding bearing member 13 will not slip between itself and the sliding surface 3. However, since vibrations are absorbed by its elastic deformation, vibration input to the floor member 6 side is suppressed. When these rubber-like elastic bodies are laminated, vibrations in the vertical direction are also absorbed by their expansion and contraction.
この実施例のストッパ４は、滑り板３に対して公知の固
着手段により固着され、そのストッパ４に緩衝材５が同
様に公知の固着手段によって固着されたものであるが、
第２図（ｂｌに示すように、滑り板３とストッパ４とは
一体に成形されたものを使用することもできるし、また
、第２図ｆｃｌのようにストッパ４をゴム質の弾性体に
より構成して緩衝材５と一体に構成することもできる。The stopper 4 of this embodiment is fixed to the sliding plate 3 by a known fixing means, and the buffer material 5 is similarly fixed to the stopper 4 by a known fixing means.
As shown in Fig. 2 (bl), the sliding plate 3 and the stopper 4 may be integrally molded, or the stopper 4 may be formed of a rubber elastic body as shown in Fig. 2 (fcl). It is also possible to configure it integrally with the cushioning material 5.
また、前記実施例の弾性薄板１４は床部材６側への取り
付は部分とスラブ１側への取り付は部分との間が平滑に
なっているが、第３図に示すように蛇腹に構成すること
もできる。このように蛇腹にすることによって、滑り支
承部材１３に対する滑り面３の滑り移動時における弾性
薄板１４のばね定数を小さくすることができる。Furthermore, the elastic thin plate 14 of the above embodiment has a smooth section between the part when attached to the floor member 6 side and the part when attached to the slab 1 side, but as shown in FIG. It can also be configured. By forming the bellows in this way, the spring constant of the thin elastic plate 14 can be reduced when the sliding surface 3 slides relative to the sliding support member 13.
さらに、ストッパ４の緩衝材５の形状を第４図に例示す
るようなものの中から選択することにょって、その緩衝
機能を任意に設定することができる。第４図（ａｌ （
ｂｌ （Ｃ）は緩衝材５の形状のみから緩衝機能を設定
しているが、第４図ｆｄｌのものは緩衝材５の内部に空
気溜５ａを設けるとともにこれと外部を連通ずる絞り５
ｂを設けて、滑り支承部材１３が当たったときに空気溜
５ａが伸縮して外部との間に空気の出入りを生じ、その
際、絞り５ｂの絞り作用により減衰力を得ようとするも
のである。Furthermore, by selecting the shape of the buffer material 5 of the stopper 4 from those illustrated in FIG. 4, its buffer function can be set arbitrarily. Figure 4 (al (
In bl (C), the buffering function is set only from the shape of the buffer material 5, but in the case of FIG.
b is provided, and when the sliding bearing member 13 hits, the air reservoir 5a expands and contracts, causing air to enter and exit between the sliding support member 13 and the outside, and at that time, a damping force is obtained by the restricting action of the restrictor 5b. be.
なお、以上の説明は、建物躯体をなすスラブ１に滑り面
３を形成し、床部材６に滑り支承部材１３を突設してい
るが、滑り面３と滑り支承部材１３との関係を上下逆に
して滑り面３を床部材６に下向きに設ける一方、滑り支
承部材１３をスラブ１に上向きに突設しても前記と同一
の作用効果を得ることができる。また、床部材６の上面
には電子計算機１１のみを設置するものではなく、振動
を与えたくない種々の機械又は器具、例えば美術工芸品
や脆弱な商品等を設置することも可能である。In addition, in the above explanation, the sliding surface 3 is formed on the slab 1 forming the building frame, and the sliding support member 13 is provided protruding from the floor member 6. Even if the sliding surface 3 is provided downwardly on the floor member 6 and the sliding support member 13 is provided protruding upwardly on the slab 1, the same effect as described above can be obtained. Furthermore, it is also possible to install not only the electronic computer 11 on the upper surface of the floor member 6, but also various machines or instruments that do not want to be subjected to vibrations, such as works of art, fragile products, etc.
以上説明したように、この発明によれば、地震力を減衰
させるための積極的な減衰機構を設けることなく、建物
躯体を床に対して水平方向に自由に滑らせることによっ
て床部材への振動伝達を遮断し、振幅が所定値を超える
ときだけストッパと緩衝材で振動を減衰するものである
ため、構造が簡単になるとともに免震装置を小形化でき
る。このため床のふところを小さくして階高を低くする
ことが可能になるという効果がある。また、弾性薄板に
よって滑り面と滑り支承部材との位置の復元を促進する
とともに、滑り面の防塵作用もあるために、滑り面を常
時同一の摩擦力に維持することができて、免震機能を長
期間にわたって維持することができる効果もある。さら
にこの発明によれば、滑り面と滑り支承部材先端面との
間の面どうしの滑り接触であるために、両者間には摩擦
力が作用しているから、床への貨物の搬入や人の歩行に
より床に水平力が作用しても、床が水平方向に振動する
こともないし、また地震力による前記滑りが発生したと
きにも騒音の発生がないという効果もある。As explained above, according to the present invention, vibrations to floor members are reduced by allowing the building frame to slide freely horizontally with respect to the floor without providing an active damping mechanism for damping seismic force. Since the transmission is cut off and the vibration is damped by the stopper and buffer material only when the amplitude exceeds a predetermined value, the structure is simple and the seismic isolation device can be made smaller. This has the effect of making it possible to reduce the floor height and lower the floor height. In addition, the elastic thin plate promotes the restoration of the position between the sliding surface and the sliding bearing member, and also has a dust-proofing effect on the sliding surface, so the sliding surface can always maintain the same frictional force and has a seismic isolation function. It also has the effect of being able to maintain it for a long period of time. Furthermore, according to the present invention, since there is a sliding contact between the sliding surface and the tip end surface of the sliding support member, a frictional force is exerted between the two, so that it is difficult to carry cargo onto the floor and prevent people from carrying cargo onto the floor. Even when a horizontal force is applied to the floor by walking, the floor does not vibrate in the horizontal direction, and even when the slip occurs due to an earthquake force, no noise is generated.
第１図はこの発明の実施例を示す分解斜視図、第２図（
ａｌは第１図の要部断面図、第２図（ｂｌ （Ｃ）はス
トッパの他の例を示す断面図、第３図は弾性薄板の他の
例を示す断面図、第４図（ａ＋〜（ｄｌは緩衝材の例を
示す断面部分図である。
１・・・スラブ（建物躯体）、２・・・滑り板、３・・
・滑り面、４・・・ストッパ、５・・・緩衝材、６・・
・床部材、７・・・大梁、８・・・小梁、１０・・・床
パネル、１１・・・電子計算機、１３・・・滑り支承部
材、１４・・・弾性薄板。
特許出願人 大成建設株式会社
代理人 弁理士 森 哲 也
代理人 弁理士 内 藤 嘉 昭
代理人 弁理士 清 水 正
代理人 弁理士 大 賀 眞 司Figure 1 is an exploded perspective view showing an embodiment of the invention, Figure 2 (
al is a sectional view of the main part of FIG. 1, FIG. 2 (C) is a sectional view showing another example of the stopper, FIG. ~(dl is a partial cross-sectional view showing an example of a cushioning material. 1... Slab (building frame), 2... Sliding board, 3...
・Sliding surface, 4... Stopper, 5... Cushioning material, 6...
- Floor member, 7... Large beam, 8... Small beam, 10... Floor panel, 11... Electronic computer, 13... Sliding support member, 14... Elastic thin plate. Patent Applicant Taisei Corporation Agent Patent Attorney Tetsuya Mori Agent Patent Attorney Yoshiaki Naito Attorney Patent Attorney Tadashi Shimizu Agent Patent Attorney Makoto Oga
Claims (3)
者のうちの一方に形成された水平な滑り面と、前記建物
躯体側と床部材側との両者のうちの前記滑り面が形成さ
れた側とは別の側に固定され且つ先端面が前記滑り面に
面どうしで摺接して床部材側の荷重を建物躯体側に支承
させる滑り支承部材と、この滑り支承部材の外周を間隔
をおいて囲んで前記滑り面に突設されたストッパと、こ
のストッパにおける前記滑り支承部材側の位置に配置さ
れたゴム質の緩衝材と、前記ストッパに囲まれた領域を
覆い、前記建物躯体側と床部材側との両者のうちの前記
滑り面が形成された側に外端が固定され、且つ前記両者
のうちの滑り支承部材が固定された側に内端が固定され
たゴム質の弾性薄板と、を備えたことを特徴とする床免
震装置。(1) A horizontal sliding surface formed on one of the building frame side and the floor member side placed thereon, and the sliding surface on both the building frame side and the floor member side. A sliding bearing member that is fixed to a side other than the side on which the surface is formed, and whose tip end surface slides in surface-to-surface contact with the sliding surface to support the load on the floor member side on the building frame side; a stopper surrounding the outer periphery at intervals and protruding from the sliding surface; a rubber cushioning material disposed at a position of the stopper on the sliding support member side; and covering an area surrounded by the stopper; The outer end is fixed to the side on which the sliding surface is formed of both the building frame side and the floor member side, and the inner end is fixed to the side on which the sliding support member is fixed. A floor seismic isolation device characterized by comprising a rubber elastic thin plate.
成された剛体であることを特徴とする第１請求項記載の
床免震装置。(2) The floor seismic isolation device according to claim 1, wherein the sliding support member is a rigid body made of metal or other material.
数の金属板とを上下方向に積層してなることを特徴とす
る第１請求項記載の床免震装置。(3) The floor seismic isolation device according to claim 1, wherein the sliding support member is formed by vertically stacking a plurality of rubber elastic materials and a plurality of metal plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23451988A JPH0623498B2 (en) | 1988-09-19 | 1988-09-19 | Floor seismic isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23451988A JPH0623498B2 (en) | 1988-09-19 | 1988-09-19 | Floor seismic isolation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0285461A true JPH0285461A (en) | 1990-03-26 |
| JPH0623498B2 JPH0623498B2 (en) | 1994-03-30 |
Family
ID=16972295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23451988A Expired - Lifetime JPH0623498B2 (en) | 1988-09-19 | 1988-09-19 | Floor seismic isolation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623498B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013113383A (en) * | 2011-11-29 | 2013-06-10 | Mitsuo Sayama | Base isolation device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009109014A (en) * | 1999-04-06 | 2009-05-21 | Ohbayashi Corp | Damping structure of bolt joint |
| CN109763959A (en) * | 2018-12-20 | 2019-05-17 | 青岛海尔股份有限公司 | Compressor damper mechanism and refrigerator |
-
1988
- 1988-09-19 JP JP23451988A patent/JPH0623498B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013113383A (en) * | 2011-11-29 | 2013-06-10 | Mitsuo Sayama | Base isolation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0623498B2 (en) | 1994-03-30 |
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