JPH108763A - Vibration isolation device - Google Patents
Vibration isolation deviceInfo
- Publication number
- JPH108763A JPH108763A JP17985896A JP17985896A JPH108763A JP H108763 A JPH108763 A JP H108763A JP 17985896 A JP17985896 A JP 17985896A JP 17985896 A JP17985896 A JP 17985896A JP H108763 A JPH108763 A JP H108763A
- Authority
- JP
- Japan
- Prior art keywords
- supported
- rolling element
- seismic isolation
- intermediate member
- isolation device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は免震装置に関する
もので、建築物やコンピュ−タ等各種の重量物を支持し
て免震を行うものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation device, and performs seismic isolation by supporting various heavy objects such as buildings and computers.
【０００２】[0002]
【従来の技術】従来の免震装置としては例えば球より成
る転動体を何れか又は両方を球面状の凹所に形成した支
持面と被支持面間に配置したものや或は平面より成る支
持面と被支持面間に偏平にした転動体を配置したもの等
種々の提案があるが、このような転動体を用いるもので
は荷重が大きくなると転動体が点接触であるために十分
な強度が得られないという欠点があった。このような点
を解決するために棒状の転動体を設けることも考えられ
るが、複数個の免震装置が用いてあると被支持面が転動
体から離れて上昇し転動体が低い位置へ転がり所定の免
震が出来なくなるおそれがある。2. Description of the Related Art As a conventional seismic isolator, for example, one or both of rolling elements made of a ball are arranged between a supporting surface and a supported surface in which a spherical concave portion is formed, or a flat supporting member. There have been various proposals, such as those in which a flat rolling element is arranged between the surface and the supported surface. However, in the case of using such a rolling element, sufficient strength is obtained because the rolling element is in point contact when the load increases. There was a disadvantage that it could not be obtained. It is conceivable to provide a rod-shaped rolling element to solve such a point.However, if a plurality of seismic isolation devices are used, the supported surface rises away from the rolling element and the rolling element rolls to a lower position. The specified seismic isolation may not be possible.
【０００３】[0003]
【発明が解決しようとする課題】この発明はこのような
点を解決して十分な強度が得られられる単純な構成の転
動体を用いて確実に動作できる免震装置を提供するもの
である。SUMMARY OF THE INVENTION An object of the present invention is to provide a seismic isolation device which solves the above problems and can be reliably operated by using a rolling element having a simple structure capable of obtaining a sufficient strength.
【０００４】[0004]
【課題を解決するための手段】この発明は支持体側の支
持面と被支持体側の被支持面間に所定方向に伸びてほぼ
所定の断面形状を有し転動可能に配置した棒状の転動体
を備え被支持面が最も低い基準状態から被支持体が支持
体に対して転動体が延びる方向と直交する水平方向に変
位すると徐々に被支持面が上昇するようになっており、
基準状態で前記転動体の中心軸線を含む水平面に対して
支持面と被支持面はほぼ対称な凹曲面又は水平な平面で
あると共にそれぞれ自体が転動体の中心軸線を通る鉛直
面に対しほぼ対称な凹曲面又は水平な平面であり、前記
転動体の支持面又は被支持面と接触することになる周面
は基準状態において中心軸線を含む水平面に対して上下
両側でほぼ対称であると共ににそれぞれ中心軸線を通る
鉛直面に対してほぼ対称な形状であるものにおいて、前
記転動体の両端に中央部を回動可能に連結し何れも等距
離の他端を連結部とした直線状に伸びる少なくとも１対
の第一のリンクと、この第一のリンクの両端の連結部に
それぞれ回動可能に連結し基準状態において前記転動体
の中心軸線を通る鉛直面内でそれぞれ中心軸線に対して
上下で支持体側と被支持体側にほぼ所定距離の位置で回
動可能に連結した何れも長さの等しい第二のリンクとを
包含し一方向の免震をすることを特徴とする免震装置を
提供するものである。この発明はまた、支持体と被支持
体間に中間体を設け、支持体と中間体の間及び中間体と
被支持体の間にそれぞれ互いに直交する水平方向に免震
する前記一方向の免震をする免震装置を設けたことを特
徴とする免震装置も提供するものである。According to the present invention, there is provided a rod-shaped rolling element which extends in a predetermined direction between a supporting surface on a supporting body side and a supported surface on a supported body side, has a substantially predetermined cross-sectional shape, and is arranged to be rollable. The supported surface gradually rises when the supported surface is displaced from the lowest reference state in the horizontal direction orthogonal to the direction in which the rolling elements extend with respect to the support,
In the reference state, the supporting surface and the supported surface are substantially symmetrical concave surfaces or horizontal planes with respect to a horizontal plane including the central axis of the rolling element, and are substantially symmetrical with respect to a vertical plane passing through the central axis of the rolling element. The peripheral surface that comes into contact with the supporting surface or the supported surface of the rolling element is substantially symmetrical on the upper and lower sides with respect to the horizontal plane including the center axis in the reference state, and In a shape substantially symmetrical with respect to a vertical plane passing through the center axis, at least a center portion is rotatably connected to both ends of the rolling element, and at least linearly extends with the other end having the same distance being a connecting portion. A pair of first links, and connecting portions at both ends of the first links rotatably connected to each other in a vertical plane passing through the center axis of the rolling element in a reference state, and vertically above and below the center axis, respectively. With the support side A seismic isolation device characterized by including a second link having the same length and being rotatably connected to a support member at a position at a predetermined distance, and performing seismic isolation in one direction. . The present invention also provides an intermediate member between the support member and the supported member, and the one-way isolator which is horizontally isolated from each other between the support member and the intermediate member and between the intermediate member and the supported member in a horizontal direction orthogonal to each other. A seismic isolation device provided with a seismic isolation device for performing an earthquake is also provided.
【０００５】[0005]
【発明の実施の形態】以下図面を参照しながらこの発明
の実施の形態について説明する。図１〜６に示すこの発
明の一実施例において、特に図５，６を参照すると、１
０は基礎構造より成る支持体である。１２は建物より成
る被支持体である。この被支持体は例えば１１個等のこ
の発明による免震装置１３を介して基礎構造１０上に支
持されている。この各免震装置は次に述べるように構成
してある。すなわち図１〜４において、１５は基礎構造
１０に対して固定した下部材、１７は中間部材、１９は
上部材である。２０は一方向の免震装置で、下部材１５
と中間部材１７の間及び中間部材１７と上部材１９の間
にそれぞれ直交する水平方向の免震をするようになって
おり、次に述べるように構成してある。Embodiments of the present invention will be described below with reference to the drawings. In one embodiment of the present invention shown in FIGS.
Numeral 0 is a support composed of a basic structure. Numeral 12 denotes a supported body made of a building. This supported body is supported on the base structure 10 via, for example, 11 seismic isolation devices 13 according to the present invention. Each of the seismic isolation devices is configured as described below. That is, in FIGS. 1-4, 15 is a lower member fixed to the basic structure 10, 17 is an intermediate member, and 19 is an upper member. Reference numeral 20 denotes a one-way seismic isolation device.
And the intermediate member 17 and between the intermediate member 17 and the upper member 19, respectively, in a horizontal direction orthogonal to each other, and configured as described below.
【０００６】下部材１５と中間部材１７間の一方向の免
震装置２０は左右方向の免震を行なうもので次のように
構成してある。２２は所定半径の円形断面の棒状の転動
体で、下部材１５と中間部材１７の間に延びており、中
間部材１７はこの転動体２２の転動によりこの転動体の
中心軸線と直交する水平方向に移動可能である。下部材
１５の上面には転動体２２を支持する所定断面形状の凹
面より成る支持面２５が形成してあり、かつ中間部材１
７の下面には転動体２２に支持される所定断面形状の凹
面より成る被支持面２６が形成してある。転動体２２が
支持面２５の最も低い位置にあり中間部材１７が下部材
１５に最も接近する位置に来た場合を基準状態とすると
転動体２２の中心軸線を含む水平面に対して対向する支
持面２５及び被支持面２６はほぼ対称であり、かつ転動
体２２の中心軸線を含む鉛直面に対してそれぞれ支持面
２５及び被支持面２６自体がほぼ対称な形状になってい
る。中間部材１７が下部材１５に対して移動する場合に
は転動体２２が転動することにより成され中間部材１７
は徐々に上昇するようになっている。支持面２５及び被
支持面２６の曲率半径は一定でもよく或は漸変してもよ
いが、転動体２２の中心軸線方向にはほぼ所定断面形状
にする必要がある。The one-way seismic isolation device 20 between the lower member 15 and the intermediate member 17 performs horizontal seismic isolation, and is configured as follows. Reference numeral 22 denotes a rod-shaped rolling element having a circular cross section with a predetermined radius, which extends between the lower member 15 and the intermediate member 17. The intermediate member 17 is rotated horizontally by the rolling element 22 so as to be orthogonal to the center axis of the rolling element. It can move in any direction. On the upper surface of the lower member 15, a supporting surface 25 formed of a concave surface having a predetermined sectional shape for supporting the rolling element 22 is formed.
The lower surface 7 has a supported surface 26 formed of a concave surface having a predetermined cross-sectional shape supported by the rolling elements 22. Assuming that the rolling element 22 is located at the lowest position of the support surface 25 and the intermediate member 17 comes to the position closest to the lower member 15 as a reference state, the supporting surface facing the horizontal plane including the central axis of the rolling element 22 The support surface 25 and the supported surface 26 are substantially symmetrical, and the support surface 25 and the supported surface 26 are each substantially symmetrical with respect to a vertical plane including the central axis of the rolling element 22. When the intermediate member 17 moves with respect to the lower member 15, the rolling member 22 is rolled to form the intermediate member 17.
Is gradually rising. The radii of curvature of the support surface 25 and the supported surface 26 may be constant or may gradually change, but they need to have a substantially predetermined cross-sectional shape in the direction of the central axis of the rolling element 22.
【０００７】また、この発明においては転動体２２とし
ては所定断面形状であれば少し偏平にする等円形断面以
外でもよいが、基準状態で中心軸線を含む水平面に対し
てほぼ対称であると共に中心軸線を含む鉛直面に対して
それ自体がほぼ対称である必要がある。また、後述する
ようにこのような転動体２２の場合には支持面２５及び
被支持面２６が前記基準状態で転動体２２の中心軸線を
含む水平面に対してほぼ対称であり、かつ転動体２２の
中心軸線を含む鉛直面に対してそれぞれ支持面２５及び
被支持面２６自体がほぼ対称な形状になっているならば
十分で、いずれの場合も被支持面２６が支持面２５に対
して基準状態から水平方向に移動すると被支持面２６が
徐々に上昇するようになっている必要がある。Further, in the present invention, the rolling element 22 may have a shape other than a circular cross-section which is slightly flattened as long as it has a predetermined cross-sectional shape. Need to be almost symmetrical with respect to the vertical plane including As will be described later, in the case of such a rolling element 22, the support surface 25 and the supported surface 26 are substantially symmetric with respect to a horizontal plane including the center axis of the rolling element 22 in the reference state, and It is sufficient that the supporting surface 25 and the supported surface 26 themselves are substantially symmetrical with respect to the vertical plane including the central axis of the support surface 25. It is necessary that the supported surface 26 gradually rises when it moves in the horizontal direction from the state.
【０００８】３０は転動体２２の両端部にピン３１によ
り２個ずつ中央部を回動可能に連結した第一のリンク
で、何れも中央部の連結部から両側で等距離の位置にも
う一つずつの連結部が形成してありかつ互いに図示のよ
うに少し開いた状態になっている。３２はそれぞれ前記
基準状態で転動体２２の中心軸線を含む鉛直面にあって
この中心軸線から等距離の位置で下部材１５と中間部材
１７の両側にそれぞれ２個ずつピン３３により回動可能
に連結した第二のリンクで、他端は第一のリンク３０の
連結部にピン３５により図示のように連結してある。Reference numeral 30 denotes a first link in which the center portion is rotatably connected to both ends of the rolling element 22 by pins 31 two by two, and each of the links is equidistant on both sides from the connection portion of the center portion. Each connecting portion is formed and is slightly open from each other as shown in the drawing. Numerals 32 denote a vertical plane including the central axis of the rolling element 22 in the reference state, and can be rotated by two pins 33 on both sides of the lower member 15 and the intermediate member 17 at positions equidistant from the central axis. The other end of the connected second link is connected to the connecting portion of the first link 30 by a pin 35 as shown in the drawing.
【０００９】中間部材１７と上部材１９間には前後方向
に免震する一方向の免震装置２０が設けてあって、その
構成及び符号は下部材１５と中間部材１７間の一方向の
免震装置２０と全く同様になっている。このように構成
したものにおいて、例えば左右方向と前後方向の両方を
含む揺れがある場合には図４に示すように支持体１０と
被支持体１２間に相対的な変位が発生して転動体２２が
転動し被支持体１２が移動しやや上昇して復元力を受け
振動を繰り返すことになる。自由振動の場合の固有周期
は例えば２秒程度等にしてあるが、地震の場合の振動の
周期はこれより十分小さいため地震の振動の周期で小さ
い振幅で振動して免震できるものである。また、前後方
向の揺れに対しては同様に中間部材１７に対して上部材
１９が振動するようになっている。A one-way seismic isolation device 20 is provided between the intermediate member 17 and the upper member 19 for seismic isolation in the front-rear direction. It is exactly the same as the vibration device 20. In such a configuration, for example, when there is a sway including both the left-right direction and the front-back direction, a relative displacement occurs between the support 10 and the supported body 12 as shown in FIG. The roll 22 rotates, and the supported body 12 moves up slightly, receives a restoring force, and repeats vibration. Although the natural period in the case of free vibration is, for example, about 2 seconds, the period of the vibration in the case of an earthquake is sufficiently smaller than this, so that the vibration can be isolated by vibrating with a small amplitude in the period of the vibration of the earthquake. In addition, the upper member 19 also vibrates with respect to the intermediate member 17 with respect to the swing in the front-rear direction.
【００１０】[0010]
【実施例】この発明による他の実施例を示す図７，８に
おいて、一方向の免震装置２０における第一のリンク３
０はそれぞれ転動体２２の両端に１個ずつ連結してあ
り、かつ第二のリンク３２も下部材１５と中間部材１７
間であればそれぞれに両端で１個所ずつ回動可能に連結
してある。中間部材１７と上部材１９の間の一方向の免
震装置２０も図示してないが同様に構成してある。図８
には地震により左右方向に揺れた場合の状態が示してあ
る。7 and 8 show another embodiment of the present invention. In FIG. 7 and FIG.
0 is connected to both ends of the rolling element 22 one by one, and the second link 32 is also connected to the lower member 15 and the intermediate member 17.
If it is in between, it is rotatably connected to one end at each end. Although not shown, the one-way seismic isolation device 20 between the intermediate member 17 and the upper member 19 is similarly configured. FIG.
The figure shows the state in the case of shaking left and right due to an earthquake.
【００１１】この発明においては一方向の免震装置２０
を前述したように二重に重ねることなく一方向のみの免
震を行なうために使用する場合もある。図９，１０に示
すこの発明の他の実施例において、一方向の免震装置２
０は支持面２５と被支持面２６が水平な平面よりなり、
転動体２２は偏平な所定断面形状で伸びており、転動体
２２の姿勢により被支持面２６が最も低い状態を基準状
態とすると中心軸線を通る水平面に対して支持面２５と
被支持面２６は上下に対称であると共に中心軸線を含む
鉛直面に対してそれ自体が対称になっている。また、こ
の転動体２２が基準状態から転動すると徐々に被支持面
２６を持上げるようになっている。この転動体２２の両
端面にはピン３１により第一のリンク３０の中央部が回
動可能に連結してあり、かつこの各第一のリンク３０の
端部と第二のリンク３２がピン３３により連結してあ
り、この各第二のリンク３２の他端が支持体１０側及び
被支持体１２側にピン３５により回動可能に連結してあ
る。図１０には被支持体１２側が左右方向に変位し転動
体２２が転動した状態が示してあり、被支持体１２側は
上昇して復元力を受けることになる。このような一方向
の免震装置２０はそれだけ１個所で用いたり互いに直交
する二方向に上下に設けてあらゆる方向の免震が出来る
ようにしてもよい。In the present invention, the one-way seismic isolation device 20 is used.
May be used to perform seismic isolation in only one direction without double doping as described above. In another embodiment of the present invention shown in FIGS.
0 indicates that the support surface 25 and the supported surface 26 are horizontal planes,
The rolling element 22 extends in a flat, predetermined cross-sectional shape, and when the state where the supported surface 26 is the lowest according to the posture of the rolling element 22 is set as a reference state, the supporting surface 25 and the supported surface 26 with respect to a horizontal plane passing through the central axis. It is vertically symmetrical and itself symmetrical about a vertical plane including the central axis. When the rolling element 22 rolls from the reference state, the supported surface 26 is gradually lifted. The center of a first link 30 is rotatably connected to both end surfaces of the rolling element 22 by a pin 31, and the end of each first link 30 and the second link 32 are connected to a pin 33. The other end of each second link 32 is rotatably connected to the supporting body 10 and the supported body 12 by a pin 35. FIG. 10 shows a state in which the supported body 12 is displaced in the left-right direction and the rolling element 22 rolls, and the supported body 12 is raised to receive a restoring force. Such a one-way seismic isolation device 20 may be used at a single location or provided vertically in two directions perpendicular to each other so that seismic isolation in all directions can be performed.
【００１２】この発明において、転動体２２の周面及び
支持面２５と被支持面２６には局部的に窪み等があって
も問題はない。In the present invention, there is no problem even if the peripheral surface of the rolling element 22, the support surface 25 and the supported surface 26 have a local depression or the like.
【００１３】[0013]
【発明の効果】この発明は前述したように構成してある
から、十分な強度が得られられる単純な構成の転動体２
２を用いて確実に動作できる免震装置を構成できるとい
う効果を有している。Since the present invention is configured as described above, the rolling element 2 having a simple configuration capable of obtaining a sufficient strength is provided.
2 can be used to form a seismic isolation device that can operate reliably.
【図１】この発明の一実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】その側面図である。FIG. 2 is a side view thereof.
【図３】その平面図である。FIG. 3 is a plan view thereof.
【図４】その揺れた状態を一部切り欠いて示す正面図で
ある。FIG. 4 is a front view showing the rocking state with a part cut away.
【図５】この発明の免震装置を設けた被支持体を一部切
り欠いて示す正面図である。FIG. 5 is a partially cutaway front view showing a supported body provided with the seismic isolation device of the present invention.
【図６】その一部を除去して免震装置の配置を示す平面
図である。FIG. 6 is a plan view showing the arrangement of the seismic isolation device with a part thereof removed.
【図７】この発明の他の実施例を示す正面図である。FIG. 7 is a front view showing another embodiment of the present invention.
【図８】その左右方向に揺れた状態を示す正面図であ
る。FIG. 8 is a front view showing the state of swinging in the left-right direction.
【図９】この発明の更に異なった他の実施例の要部を示
す正面図である。FIG. 9 is a front view showing a main part of still another embodiment of the present invention.
【図１０】その左右方向に揺れた状態を示す正面図であ
る。FIG. 10 is a front view showing the state of swinging in the left-right direction.
１０ 支持体 １２ 被支持体 １３ 免震装置 １５ 下部材 １７ 中間部材 １９ 上部材 ２０ 一方向の免震装置 ２２ 転動体 ２５ 支持面 ２６ 被支持面 ３０ 第一のリンク ３２ 第二のリンク DESCRIPTION OF SYMBOLS 10 Support 12 Supported object 13 Seismic isolation device 15 Lower member 17 Intermediate member 19 Upper member 20 One-way seismic isolation device 22 Rolling element 25 Support surface 26 Supported surface 30 First link 32 Second link
【手続補正書】[Procedure amendment]
【提出日】平成９年５月６日[Submission date] May 6, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】 明細書[Document Name] Statement
【発明の名称】 免震装置[Title of the Invention] Seismic isolation device
【特許請求の範囲】[Claims]
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】この発明は免震装置に関する
もので、建築物やコンピュ−タ等各種の重量物を支持し
て免震を行うものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation device, and performs seismic isolation by supporting various heavy objects such as buildings and computers.
【０００２】[0002]
【従来の技術】従来の免震装置としては例えば球より成
る転動体を何れか又は両方を球面状の凹所に形成した支
持面と被支持面間に配置したものや或は平面より成る支
持面と被支持面間に偏平にした転動体を配置したもの等
種々の提案があるが、このような転動体を用いるもので
は荷重が大きくなると転動体が点接触であるために十分
な強度が得られないという欠点があった。このような点
を解決するために棒状の転動体を設けることも考えられ
るが、複数個の免震装置が用いてあると被支持面が転動
体から離れて上昇し転動体が低い位置へ転がり所定の免
震が出来なくなるおそれがある。2. Description of the Related Art As a conventional seismic isolator, for example, one or both of rolling elements made of a ball are arranged between a supporting surface and a supported surface in which a spherical concave portion is formed, or a flat supporting member. There have been various proposals, such as those in which a flat rolling element is arranged between the surface and the supported surface. However, in the case of using such a rolling element, sufficient strength is obtained because the rolling element is in point contact when the load increases. There was a disadvantage that it could not be obtained. It is conceivable to provide a rod-shaped rolling element to solve such a point.However, if a plurality of seismic isolation devices are used, the supported surface rises away from the rolling element and the rolling element rolls to a lower position. The specified seismic isolation may not be possible.
【０００３】[0003]
【発明が解決しようとする課題】この発明はこのような
点を解決して十分な強度が得られられる単純な構成の転
動体を用いて確実に動作できる免震装置を提供するもの
である。SUMMARY OF THE INVENTION An object of the present invention is to provide a seismic isolation device which solves the above problems and can be reliably operated by using a rolling element having a simple structure capable of obtaining a sufficient strength.
【０００４】[0004]
【課題を解決するための手段】この発明は支持体側の支
持面と被支持体側の被支持面間に所定方向に伸びてほぼ
所定の断面形状を有し転動可能に配置した棒状の転動体
を備え被支持面が最も低い基準状態から被支持体が支持
体に対して転動体が延びる方向と直交する水平方向に変
位すると徐々に被支持面が上昇するようになっており、
基準状態で前記転動体の中心軸線を含む水平面に対して
支持面と被支持面はほぼ対称な凹曲面又は水平な平面で
あると共にそれぞれ自体が転動体の中心軸線を通る鉛直
面に対しほぼ対称な凹曲面又は水平な平面であり、前記
転動体の支持面又は被支持面と接触することになる周面
は基準状態において中心軸線を含む水平面に対して上下
両側でほぼ対称であると共ににそれぞれ中心軸線を通る
鉛直面に対してほぼ対称な形状であるものにおいて、前
記転動体の両端に中央部を回動可能に連結し何れも等距
離の他端を連結部とした直線状に伸びる少なくとも１対
の第一のリンクと、この第一のリンクの両端の連結部に
それぞれ回動可能に連結し基準状態において前記転動体
の中心軸線を通る鉛直面内でそれぞれ中心軸線に対して
上下で支持体側と被支持体側にほぼ所定距離の位置で回
動可能に連結した何れも長さの等しい第二のリンクとを
包含し一方向の免震をすることを特徴とする免震装置を
提供するものである。この発明はまた、支持体と被支持
体間に中間体を設け、支持体と中間体の間及び中間体と
被支持体の間にそれぞれ互いに直交する水平方向に免震
する前記一方向の免震をする免震装置を設けたことを特
徴とする免震装置も提供するものである。According to the present invention, there is provided a rod-shaped rolling element which extends in a predetermined direction between a supporting surface on a supporting body side and a supported surface on a supported body side, has a substantially predetermined cross-sectional shape, and is arranged to be rollable. The supported surface gradually rises when the supported surface is displaced from the lowest reference state in the horizontal direction orthogonal to the direction in which the rolling elements extend with respect to the support,
In the reference state, the supporting surface and the supported surface are substantially symmetrical concave surfaces or horizontal planes with respect to a horizontal plane including the central axis of the rolling element, and are substantially symmetrical with respect to a vertical plane passing through the central axis of the rolling element. The peripheral surface that comes into contact with the supporting surface or the supported surface of the rolling element is substantially symmetrical on the upper and lower sides with respect to the horizontal plane including the center axis in the reference state, and In a shape substantially symmetrical with respect to a vertical plane passing through the center axis, at least a center portion is rotatably connected to both ends of the rolling element, and at least linearly extends with the other end having the same distance being a connecting portion. A pair of first links, and connecting portions at both ends of the first links rotatably connected to each other in a vertical plane passing through the center axis of the rolling element in a reference state, and vertically above and below the center axis, respectively. With the support side A seismic isolation device characterized by including a second link having the same length and being rotatably connected to a support member at a position at a predetermined distance, and performing seismic isolation in one direction. . The present invention also provides an intermediate member between the support member and the supported member, and the one-way isolator which is horizontally isolated from each other between the support member and the intermediate member and between the intermediate member and the supported member in a horizontal direction orthogonal to each other. A seismic isolation device provided with a seismic isolation device for performing an earthquake is also provided.
【０００５】[0005]
【発明の実施の形態】以下図面を参照しながらこの発明
の実施の形態について説明する。図１〜６に示すこの発
明の一実施例において、特に図５，６を参照すると、１
０は基礎構造より成る支持体である。１２は建物より成
る被支持体である。この被支持体は例えば１１個等のこ
の発明による免震装置１３を介して基礎構造１０上に支
持されている。この各免震装置は次に述べるように構成
してある。すなわち図１〜４において、１５は基礎構造
１０に対して固定した下部材、１７は中間部材、１９は
上部材である。２０は一方向の免震装置で、下部材１５
と中間部材１７の間及び中間部材１７と上部材１９の間
にそれぞれ直交する水平方向の免震をするようになって
おり、次に述べるように構成してある。Embodiments of the present invention will be described below with reference to the drawings. In one embodiment of the present invention shown in FIGS.
Numeral 0 is a support composed of a basic structure. Numeral 12 denotes a supported body made of a building. This supported body is supported on the base structure 10 via, for example, 11 seismic isolation devices 13 according to the present invention. Each of the seismic isolation devices is configured as described below. That is, in FIGS. 1-4, 15 is a lower member fixed to the basic structure 10, 17 is an intermediate member, and 19 is an upper member. Reference numeral 20 denotes a one-way seismic isolation device.
And the intermediate member 17 and between the intermediate member 17 and the upper member 19, respectively, in a horizontal direction orthogonal to each other, and configured as described below.
【０００６】下部材１５と中間部材１７間の一方向の免
震装置２０は左右方向の免震を行なうもので次のように
構成してある。２２は所定半径の円形断面の棒状の転動
体で、下部材１５と中間部材１７の間に延びており、中
間部材１７はこの転動体２２の転動によりこの転動体の
中心軸線と直交する水平方向に移動可能である。下部材
１５の上面には転動体２２を支持する所定断面形状の凹
面より成る支持面２５が形成してあり、かつ中間部材１
７の下面には転動体２２に支持される所定断面形状の凹
面より成る被支持面２６が形成してある。転動体２２が
支持面２５の最も低い位置にあり中間部材１７が下部材
１５に最も接近する位置に来た場合を基準状態とすると
転動体２２の中心軸線を含む水平面に対して対向する支
持面２５及び被支持面２６はほぼ対称であり、かつ転動
体２２の中心軸線を含む鉛直面に対してそれぞれ支持面
２５及び被支持面２６自体がほぼ対称な形状になってい
る。中間部材１７が下部材１５に対して移動する場合に
は転動体２２が転動することにより成され中間部材１７
は徐々に上昇するようになっている。支持面２５及び被
支持面２６の曲率半径は一定でもよく或は漸変してもよ
いが、転動体２２の中心軸線方向にはほぼ所定断面形状
にする必要がある。The one-way seismic isolation device 20 between the lower member 15 and the intermediate member 17 performs horizontal seismic isolation, and is configured as follows. Reference numeral 22 denotes a rod-shaped rolling element having a circular cross section with a predetermined radius, which extends between the lower member 15 and the intermediate member 17. The intermediate member 17 is rotated horizontally by the rolling element 22 so as to be orthogonal to the center axis of the rolling element. It can move in any direction. On the upper surface of the lower member 15, a supporting surface 25 formed of a concave surface having a predetermined sectional shape for supporting the rolling element 22 is formed.
The lower surface 7 has a supported surface 26 formed of a concave surface having a predetermined cross-sectional shape supported by the rolling elements 22. Assuming that the rolling element 22 is located at the lowest position of the support surface 25 and the intermediate member 17 comes to the position closest to the lower member 15 as a reference state, the supporting surface facing the horizontal plane including the central axis of the rolling element 22 The support surface 25 and the supported surface 26 are substantially symmetrical, and the support surface 25 and the supported surface 26 are each substantially symmetrical with respect to a vertical plane including the central axis of the rolling element 22. When the intermediate member 17 moves with respect to the lower member 15, the rolling member 22 is rolled to form the intermediate member 17.
Is gradually rising. The radii of curvature of the support surface 25 and the supported surface 26 may be constant or may gradually change, but they need to have a substantially predetermined cross-sectional shape in the direction of the central axis of the rolling element 22.
【０００７】また、この発明においては転動体２２とし
ては所定断面形状であれば少し偏平にする等円形断面以
外でもよいが、基準状態で中心軸線を含む水平面に対し
てほぼ対称であると共に中心軸線を含む鉛直面に対して
それ自体がほぼ対称である必要がある。また、後述する
ようにこのような転動体２２の場合には支持面２５及び
被支持面２６が前記基準状態で転動体２２の中心軸線を
含む水平面に対してほぼ対称であり、かつ転動体２２の
中心軸線を含む鉛直面に対してそれぞれ支持面２５及び
被支持面２６自体がほぼ対称な形状になっているならば
十分で、いずれの場合も被支持面２６が支持面２５に対
して基準状態から水平方向に移動すると被支持面２６が
徐々に上昇するようになっている必要がある。Further, in the present invention, the rolling element 22 may have a shape other than a circular cross-section which is slightly flattened as long as it has a predetermined cross-sectional shape. Need to be almost symmetrical with respect to the vertical plane including As will be described later, in the case of such a rolling element 22, the support surface 25 and the supported surface 26 are substantially symmetric with respect to a horizontal plane including the center axis of the rolling element 22 in the reference state, and It is sufficient that the supporting surface 25 and the supported surface 26 themselves are substantially symmetrical with respect to the vertical plane including the central axis of the support surface 25. It is necessary that the supported surface 26 gradually rises when it moves in the horizontal direction from the state.
【０００８】３０は転動体２２の両端部にピン３１によ
り２個ずつ中央部を回動可能に連結した第一のリンク
で、何れも中央部の連結部から両側で等距離の位置にも
う一つずつの連結部が形成してありかつ互いに図示のよ
うに少し開いた状態になっている。３２はそれぞれ前記
基準状態で転動体２２の中心軸線を含む鉛直面にあって
この中心軸線から等距離の位置で下部材１５と中間部材
１７の両側にそれぞれ２個ずつピン３３により回動可能
に連結した第二のリンクで、他端は第一のリンク３０の
連結部にピン３５により図示のように連結してある。Reference numeral 30 denotes a first link in which the center portion is rotatably connected to both ends of the rolling element 22 by pins 31 two by two, and each of the links is equidistant on both sides from the connection portion of the center portion. Each connecting portion is formed and is slightly open from each other as shown in the drawing. Numerals 32 denote a vertical plane including the central axis of the rolling element 22 in the reference state, and can be rotated by two pins 33 on both sides of the lower member 15 and the intermediate member 17 at positions equidistant from the central axis. The other end of the connected second link is connected to the connecting portion of the first link 30 by a pin 35 as shown in the drawing.
【０００９】中間部材１７と上部材１９間には前後方向
に免震する一方向の免震装置２０が設けてあって、その
構成及び符号は下部材１５と中間部材１７間の一方向の
免震装置２０と全く同様になっている。このように構成
したものにおいて、例えば左右方向と前後方向の両方を
含む揺れがある場合には図４に示すように支持体１０と
被支持体１２間に相対的な変位が発生して転動体２２が
転動し被支持体１２が移動しやや上昇して復元力を受け
振動を繰り返すことになる。自由振動の場合の固有周期
は例えば２秒程度等にしてあるが、地震の場合の振動の
周期はこれより十分小さいため地震の振動の周期で小さ
い振幅で振動して免震できるものである。また、前後方
向の揺れに対しては同様に中間部材１７に対して上部材
１９が振動するようになっている。A one-way seismic isolation device 20 is provided between the intermediate member 17 and the upper member 19 for seismic isolation in the front-rear direction. It is exactly the same as the vibration device 20. In such a configuration, for example, when there is a sway including both the left-right direction and the front-back direction, a relative displacement occurs between the support 10 and the supported body 12 as shown in FIG. The roll 22 rotates, and the supported body 12 moves up slightly, receives a restoring force, and repeats vibration. Although the natural period in the case of free vibration is, for example, about 2 seconds, the period of the vibration in the case of an earthquake is sufficiently smaller than this, so that the vibration can be isolated by vibrating with a small amplitude in the period of the vibration of the earthquake. In addition, the upper member 19 also vibrates with respect to the intermediate member 17 with respect to the swing in the front-rear direction.
【００１０】[0010]
【実施例】この発明による他の実施例を示す図７，８に
おいて、一方向の免震装置２０における第一のリンク３
０はそれぞれ転動体２２の両端に１個ずつ連結してあ
り、かつ第二のリンク３２も下部材１５と中間部材１７
間であればそれぞれに両端で１個所ずつ回動可能に連結
してある。中間部材１７と上部材１９の間の一方向の免
震装置２０も図示してないが同様に構成してある。図８
には地震により左右方向に揺れた場合の状態が示してあ
る。7 and 8 show another embodiment of the present invention. In FIG. 7 and FIG.
0 is connected to both ends of the rolling element 22 one by one, and the second link 32 is also connected to the lower member 15 and the intermediate member 17.
If it is in between, it is rotatably connected to one end at each end. Although not shown, the one-way seismic isolation device 20 between the intermediate member 17 and the upper member 19 is similarly configured. FIG.
The figure shows the state in the case of shaking left and right due to an earthquake.
【００１１】この発明においては一方向の免震装置２０
を前述したように二重に重ねることなく一方向のみの免
震を行なうために使用する場合もある。図９，１０に示
すこの発明の他の実施例において、一方向の免震装置２
０は支持面２５と被支持面２６が水平な平面よりなり、
転動体２２は偏平な所定断面形状で伸びており、転動体
２２の姿勢により被支持面２６が最も低い状態を基準状
態とすると中心軸線を通る水平面に対して支持面２５と
被支持面２６は上下に対称であると共に中心軸線を含む
鉛直面に対してそれ自体が対称になっている。また、こ
の転動体２２が基準状態から転動すると徐々に被支持面
２６を持上げるようになっている。この転動体２２の両
端面にはピン３１により第一のリンク３０の中央部が回
動可能に連結してあり、かつこの各第一のリンク３０の
端部と第二のリンク３２がピン３３により連結してあ
り、この各第二のリンク３２の他端が支持体１０側及び
被支持体１２側にピン３５により回動可能に連結してあ
る。図１０には被支持体１２側が左右方向に変位し転動
体２２が転動した状態が示してあり、被支持体１２側は
上昇して復元力を受けることになる。このような一方向
の免震装置２０はそれだけ１個所で用いたり互いに直交
する二方向に上下に設けてあらゆる方向の免震が出来る
ようにしてもよい。In the present invention, the one-way seismic isolation device 20 is used.
May be used to perform seismic isolation in only one direction without double doping as described above. In another embodiment of the present invention shown in FIGS.
0 indicates that the support surface 25 and the supported surface 26 are horizontal planes,
The rolling element 22 extends in a flat, predetermined cross-sectional shape, and when the state where the supported surface 26 is the lowest according to the posture of the rolling element 22 is set as a reference state, the supporting surface 25 and the supported surface 26 with respect to a horizontal plane passing through the central axis. It is vertically symmetrical and itself symmetrical about a vertical plane including the central axis. When the rolling element 22 rolls from the reference state, the supported surface 26 is gradually lifted. The center of a first link 30 is rotatably connected to both end surfaces of the rolling element 22 by a pin 31, and the end of each first link 30 and the second link 32 are connected to a pin 33. The other end of each second link 32 is rotatably connected to the supporting body 10 and the supported body 12 by a pin 35. FIG. 10 shows a state in which the supported body 12 is displaced in the left-right direction and the rolling element 22 rolls, and the supported body 12 is raised to receive a restoring force. Such a one-way seismic isolation device 20 may be used at a single location or provided vertically in two directions perpendicular to each other so that seismic isolation in all directions can be performed.
【００１２】この発明において、転動体２２の周面及び
支持面２５と被支持面２６には局部的に窪み等があって
も問題はない。In the present invention, there is no problem even if the peripheral surface of the rolling element 22, the support surface 25 and the supported surface 26 have a local depression or the like.
【００１３】[0013]
【発明の効果】この発明は前述したように構成してある
から、十分な強度が得られられる単純な構成の転動体２
２を用いて確実に動作できる免震装置を構成できるとい
う効果を有している。Since the present invention is configured as described above, the rolling element 2 having a simple configuration capable of obtaining a sufficient strength is provided.
2 can be used to form a seismic isolation device that can operate reliably.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の一実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】その側面図である。FIG. 2 is a side view thereof.
【図３】その平面図である。FIG. 3 is a plan view thereof.
【図４】その揺れた状態を一部切り欠いて示す正面図で
ある。FIG. 4 is a front view showing the rocking state with a part cut away.
【図５】この発明の免震装置を設けた被支持体を一部切
り欠いて示す正面図である。FIG. 5 is a partially cutaway front view showing a supported body provided with the seismic isolation device of the present invention.
【図６】その一部を除去して免震装置の配置を示す平面
図である。FIG. 6 is a plan view showing the arrangement of the seismic isolation device with a part thereof removed.
【図７】この発明の他の実施例を示す正面図である。FIG. 7 is a front view showing another embodiment of the present invention.
【図８】その左右方向に揺れた状態を示す正面図であ
る。FIG. 8 is a front view showing the state of swinging in the left-right direction.
【図９】この発明の更に異なった他の実施例の要部を示
す正面図である。FIG. 9 is a front view showing a main part of still another embodiment of the present invention.
【図１０】その左右方向に揺れた状態を示す正面図であ
る。FIG. 10 is a front view showing the state of swinging in the left-right direction.
【符号の説明】 １０ 支持体 １２ 被支持体 １３ 免震装置 １５ 下部材 １７ 中間部材 １９ 上部材 ２０ 一方向の免震装置 ２２ 転動体 ２５ 支持面 ２６ 被支持面 ３０ 第一のリンク ３２ 第二のリンクDESCRIPTION OF SYMBOLS 10 Support body 12 Supported body 13 Seismic isolation device 15 Lower member 17 Intermediate member 19 Upper member 20 Unidirectional seismic isolation device 22 Rolling element 25 Support surface 26 Supported surface 30 First link 32 Second Links
Claims (2)
面間に所定方向に伸びてほぼ所定の断面形状を有し転動
可能に配置した棒状の転動体を備え被支持面が最も低い
基準状態から被支持体が支持体に対して転動体が延びる
方向と直交する水平方向に変位すると徐々に被支持面が
上昇するようになっており、基準状態で前記転動体の中
心軸線を含む水平面に対して支持面と被支持面はほぼ対
称な凹曲面又は水平な平面であると共にそれぞれ自体が
転動体の中心軸線を通る鉛直面に対しほぼ対称な凹曲面
又は水平な平面であり、前記転動体の支持面又は被支持
面と接触することになる周面は基準状態において中心軸
線を含む水平面に対して上下両側でほぼ対称であると共
ににそれぞれ中心軸線を通る鉛直面に対してほぼ対称な
形状であるものにおいて、前記転動体の両端に中央部を
回動可能に連結し何れも等距離の他端を連結部とした直
線状に伸びる少なくとも１対の第一のリンクと、この第
一のリンクの両端の連結部にそれぞれ回動可能に連結し
基準状態において前記転動体の中心軸線を通る鉛直面内
でそれぞれ中心軸線に対して上下で支持体側と被支持体
側にほぼ所定距離の位置で回動可能に連結した何れも長
さの等しい第二のリンクとを包含し一方向の免震をする
ことを特徴とする免震装置。1. A rod-shaped rolling element which extends in a predetermined direction between a supporting surface on a supporting body side and a supported surface on a supported body side and has a substantially predetermined cross-sectional shape and is arranged so as to be rollable, and the supported surface is the most. The supported surface gradually rises when the supported body is displaced from the low reference state in a horizontal direction orthogonal to the direction in which the rolling elements extend with respect to the support body, and the center axis of the rolling elements is shifted in the reference state. The supporting surface and the supported surface are substantially symmetrical concave surfaces or horizontal planes with respect to the horizontal plane including, and are respectively themselves substantially symmetrical concave curved surfaces or horizontal planes with respect to a vertical plane passing through the center axis of the rolling element, The peripheral surface that comes into contact with the supporting surface or the supported surface of the rolling element is substantially symmetrical on both the upper and lower sides with respect to a horizontal plane including the central axis in the reference state, and is substantially parallel to a vertical plane passing through the central axis. For symmetrical shapes At least one pair of first links extending in a straight line having a central portion rotatably connected to both ends of the rolling element and having the other end having the same distance as a connection portion, and both ends of the first link; Are rotatably connected to the connecting portions, and are rotatable in a reference state in a vertical plane passing through the center axis of the rolling element at a position substantially at a predetermined distance above and below the center axis on the support side and the supported body side, respectively. A seismic isolation device, which includes a second link connected to the second link and having the same length, and performs one-way seismic isolation.
持体と中間体の間及び中間体と被支持体の間にそれぞれ
互いに直交する水平方向に免震する請求項１記載の免震
装置を設けたことを特徴とする免震装置。2. The method according to claim 1, wherein an intermediate body is provided between the support and the supported body, and the bases are isolated in horizontal directions orthogonal to each other between the support and the intermediate body and between the intermediate body and the supported body. A seismic isolation device provided with a seismic isolation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8179858A JP3069524B2 (en) | 1996-06-21 | 1996-06-21 | Seismic isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8179858A JP3069524B2 (en) | 1996-06-21 | 1996-06-21 | Seismic isolation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH108763A true JPH108763A (en) | 1998-01-13 |
| JP3069524B2 JP3069524B2 (en) | 2000-07-24 |
Family
ID=16073152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8179858A Expired - Fee Related JP3069524B2 (en) | 1996-06-21 | 1996-06-21 | Seismic isolation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3069524B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007285364A (en) * | 2006-04-13 | 2007-11-01 | Seiji Yoshioka | Base isolation table |
| JP2015190183A (en) * | 2014-03-28 | 2015-11-02 | 公益財団法人鉄道総合技術研究所 | Bearing type pin support and reinforcement method |
| CN108412073A (en) * | 2018-03-05 | 2018-08-17 | 安徽理工大学 | A kind of novel U-shaped mild steel damper |
-
1996
- 1996-06-21 JP JP8179858A patent/JP3069524B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007285364A (en) * | 2006-04-13 | 2007-11-01 | Seiji Yoshioka | Base isolation table |
| JP2015190183A (en) * | 2014-03-28 | 2015-11-02 | 公益財団法人鉄道総合技術研究所 | Bearing type pin support and reinforcement method |
| CN108412073A (en) * | 2018-03-05 | 2018-08-17 | 安徽理工大学 | A kind of novel U-shaped mild steel damper |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3069524B2 (en) | 2000-07-24 |
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