JP2636950B2 - Building seismic isolation device - Google Patents
Building seismic isolation deviceInfo
- Publication number
- JP2636950B2 JP2636950B2 JP2159675A JP15967590A JP2636950B2 JP 2636950 B2 JP2636950 B2 JP 2636950B2 JP 2159675 A JP2159675 A JP 2159675A JP 15967590 A JP15967590 A JP 15967590A JP 2636950 B2 JP2636950 B2 JP 2636950B2
- Authority
- JP
- Japan
- Prior art keywords
- seismic isolation
- isolation device
- building
- center
- upper structure
- 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.)
- Expired - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は建築物の免震装置に係るものである。Description: TECHNICAL FIELD The present invention relates to a seismic isolation device for a building.
（従来の技術） 第４図及び第５図は従来の免震装置に使用される免震
部材で、金属部材片（ａ）と弾性部材片（ｂ）とを交互
に積層し、同積層体の中心部に鉛柱（ｃ）を嵌装して構
成されている。このように構成された免震部材をその上
下面に配設した取付部材（ｄ）を介して建築物の基礎部
と上部構造部との間に取付けている。(Prior Art) FIGS. 4 and 5 show a seismic isolation member used in a conventional seismic isolation device, in which metal member pieces (a) and elastic member pieces (b) are alternately laminated, and the laminated body is formed. The lead column (c) is fitted in the center of the. The seismic isolation member configured as described above is mounted between the foundation and the upper structure of the building via the mounting members (d) disposed on the upper and lower surfaces thereof.
図中（ｅ）は前記取付部材（ｄ）に設けた取付孔であ
る。(E) in the figure is a mounting hole provided in the mounting member (d).
前記免震部材の配置に際しては、免震装置の設置位置
の吸収エネルギに応じて、前記積層体の大きさや鉛柱の
直径を調整したり、あるいは支承位置を調整し、上部構
造物の重心位置と免震装置の剛心位置とを一致せしめ、
地震時における建造物の振動を軽減するとともに、同建
造物の水平抵抗力の合力の作用点、x,y両方向の剛性の
中心線の交点である剛心と、慣性力の作用点である重心
との不一致による床のねじれ等を防止している。When arranging the seismic isolation member, the size of the laminate and the diameter of the lead column are adjusted or the bearing position is adjusted according to the absorbed energy at the installation position of the seismic isolation device, and the center of gravity of the upper structure is adjusted. And the rigid position of the seismic isolation device
While reducing the vibration of the building during an earthquake, the point of action of the resultant force of the horizontal resistance of the building, the center of gravity which is the intersection of the center lines of rigidity in both x and y directions, and the center of gravity which is the point of action of the inertial force To prevent the floor from twisting due to inconsistency.
（発明が解決しようとする課題） しかしながら前記従来の免震装置は、応力特性が均一
になるような比較的単純な建築物の場合には有効である
が、不整形で応力特性が不均一の建築物の場合には問題
となる。(Problems to be Solved by the Invention) However, the above-described conventional seismic isolation device is effective for a relatively simple building in which the stress characteristics are uniform. This is a problem in the case of buildings.
即ち建築物の免震装置の設計に際しては、予め応力解
析をして重心位置を算出して、免震装置の剛心位置が重
心位置に合致、または近くなるように免震装置を配設す
るが、建築物が不整形で応力特性が不均一になる場合、
当初の設計より予期せぬ応力が作用することによって、
当初よりは重心位置と剛心位置との間の変位量が増大
し、この変位量が大きくなるとよじれによる回転振動が
生じ、水平変形時に有効な履歴特性が発揮できず、これ
を制御しようとすると別のダンパー装置を必要とする。That is, when designing a seismic isolation device for a building, stress analysis is performed in advance to calculate the position of the center of gravity, and the seismic isolation device is arranged so that the rigid position of the seismic isolation device matches or is close to the position of the center of gravity. However, if the building is irregular and the stress characteristics are uneven,
Due to unexpected stress acting from the original design,
From the beginning, the amount of displacement between the position of the center of gravity and the position of the rigid center increases, and when this amount of displacement increases, rotational vibration occurs due to kinking, and effective hysteresis characteristics can not be exhibited during horizontal deformation, so if you try to control this Requires another damper device.
また建築物の規模に応じて免震装置も大きくなり、且
つ免震部材の中央部に配設した鉛柱の直径が大きくなる
ので、ある程度の地震には効果が発揮されるが、小規模
の微振動ではエネルギを吸収するまでには至らず、免震
効果が期待できない。In addition, the seismic isolation device becomes larger according to the scale of the building, and the diameter of the lead column installed in the center of the seismic isolation member becomes larger, which is effective for some earthquakes. Microvibration is not enough to absorb energy, and no seismic isolation effect can be expected.
設置位置と吸収エネルギに即応した免震装置を設計す
るためには、免震部材の中央部の鉛柱の直径を加減した
り、積層部分の大きさを調整し、吸収エネルギを調整す
るため各種のサイズの免震部材を製作することとなる。
このためには製作用金型に多大のコストがかかるのであ
る程度基準化されたサイズの免震部材を配設することと
なるので、設計範囲が大雑把になり、免震構造の設計が
困難になるという問題点があった。In order to design a seismic isolation device that responds immediately to the installation position and absorbed energy, it is necessary to adjust the diameter of the lead column in the center of the seismic isolation member, adjust the size of the laminated part, and adjust the absorbed energy. The size of the seismic isolation member will be manufactured.
For this purpose, a large cost is required for the production mold, so that a seismic isolation member of a standardized size is arranged to some extent, so that the design range becomes rough and the design of the seismic isolation structure becomes difficult. There was a problem.
本発明は前記従来技術の有する問題点に鑑みて提案さ
れたもので、その目的とする処は、免震装置の配設位置
に対応して夫々の条件に合わせた特性を免震装置を構成
する各免震部材単体に具備せしめることによって、免震
構造設計の合理化と免震効果の向上を図ることができる
建築物の免震装置を提供する点にある。SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and the object thereof is to configure a seismic isolation device having characteristics adapted to respective conditions according to the arrangement position of the seismic isolation device. An object of the present invention is to provide a seismic isolation device for a building, which can improve the seismic isolation effect by rationalizing the seismic isolation structure design by providing each seismic isolation member alone.
（課題を解決するための手段） 前記の目的を達成するため、本発明に係る建築物の免
震装置は、金属部片と弾性部片とを交互に重層してなる
積層体の同心円周上に沿って、複数の鉛柱嵌装用空洞を
配設して構成された免震部材を、建築物の基礎部と上部
構造物との間に介装するとともに、吸収エネルギに応じ
て前記免震部材の空洞に嵌装される鉛柱の数を調整し
て、前記上部構造物の重心位置と前記免震装置の剛心位
置とを合致、若しくは近接せしめて構成されている。(Means for Solving the Problems) In order to achieve the above object, a seismic isolation device for a building according to the present invention is provided on a concentric circumference of a laminate in which metal pieces and elastic pieces are alternately layered. A seismic isolation member configured by arranging a plurality of lead column fitting cavities along with is interposed between the foundation of the building and the upper structure, and the seismic isolation is performed according to the absorbed energy. The number of lead columns fitted in the cavity of the member is adjusted so that the position of the center of gravity of the upper structure and the position of the rigid center of the seismic isolation device are matched or approached.
（作用） 本発明は前記したように建築物の基礎部と上部構造物
との間に介装された免震部材における、金属部片と弾性
部片との積層体の同心円周上に沿って複数の鉛柱嵌装用
空洞が設けられているので、吸収エネルギに応じて各免
震部材の空洞に嵌装される鉛柱の数を調整して、同免震
部材群によって構成された免震装置の剛心と、上部構造
物の重心との位置を合致せしめることによって、地震時
における床等のねじれに伴う回転振動の生起を抑制し、
免震装置の履歴特性を生かし、免震効果を発揮しうるも
のである。(Function) As described above, according to the present invention, the seismic isolation member interposed between the foundation part of the building and the upper structure is formed along the concentric circumference of the laminate of the metal part and the elastic part in the seismic isolation member. Since a plurality of lead column fitting cavities are provided, the number of lead columns fitted into the cavities of each seismic isolation member is adjusted according to the absorbed energy, and the seismic isolation By matching the position of the center of gravity of the equipment with the center of gravity of the upper structure, the occurrence of rotational vibration due to torsion of the floor etc. during an earthquake is suppressed,
By utilizing the hysteresis characteristics of the seismic isolation device, it can exhibit the seismic isolation effect.
また前記免震部材に嵌装される鉛柱は、同部材におけ
る同心円周上に設けられた複数の空洞に嵌装されるの
で、鉛柱の断面が小さくなり、地震時に免震装置に水平
変形が生起したとき、剪断変形以外に曲げ変形が加わ
り、小地震時においても長周期でエネルギを吸収し、減
衰しうるものである。Further, since the lead column fitted to the seismic isolation member is fitted to a plurality of cavities provided on the concentric circumference of the member, the cross section of the lead column becomes small, and the seismic isolation device is horizontally deformed during an earthquake. When a quake occurs, bending deformation is applied in addition to shear deformation, and energy can be absorbed and attenuated in a long cycle even during a small earthquake.
（実施例） 以下本発明を図示の実施例について説明する。(Example) Hereinafter, the present invention will be described with reference to an illustrated example.
第１図及び第２図において、（Ａ）は免震部材を示
し、鋼板の如き金属部片（１）とゴムの如き弾性部片
（２）とを交互に重層してなる積層体の同心円周上に沿
って、複数の垂直の鉛柱嵌装用空洞（３）が配設され、
免震部材（Ａ）の設置位置の吸収エネルギに応じて、同
空洞（３）群のうち所望の空洞（３）に鉛柱（４）が嵌
装されている。1 and 2, (A) shows a seismic isolation member, and a concentric circle of a laminated body in which metal pieces (1) such as a steel plate and elastic pieces (2) such as rubber are alternately layered. Along the circumference, a plurality of vertical plumbing cavities (3) are provided,
A lead column (4) is fitted in a desired cavity (3) of the same cavity (3) group according to the absorbed energy at the installation position of the seismic isolation member (A).
なお第２図は鉛柱（４）が３本の空洞（３）が３本と
よりなる免震部材（Ａ）を示すが、本発明に使用される
免震部材（Ａ）はこの本数に限定されるものではない。FIG. 2 shows a seismic isolation member (A) having three lead columns (4) and three cavities (3). The number of seismic isolation members (A) used in the present invention is as follows. It is not limited.
図中（５）は前記積層体の上下に配設された取付板で
ある。In the drawing, (5) is a mounting plate disposed above and below the laminate.
第３図は平面的に不整形の建築物に本発明を適用した
場合を示し、柱（６）の直下に前記免震部材（Ａ）が上
下の取付板（５）を介して、基礎部と上部構造物との間
に配設されている。FIG. 3 shows a case in which the present invention is applied to a building having an irregular shape in a plan view, and the seismic isolation member (A) is provided directly below a column (6) via an upper and lower mounting plate (5). And the upper structure.
前記免震部材（Ａ）は建築物の免震設計による各柱
（６）位置の吸収エネルギに応じて、鉛柱（４）の数が
調整され、図示の実施例においては、免震部材（A1）
（A2）及び（A3）において鉛柱（４）の数が減ぜられ、
残余の免震部材（Ａ）が第１図及び第２図に示す３本の
鉛柱（４）が配設された部材より構成され、上部構造物
の重心Ｇの位置と、免震位置の剛心Ｒの位置とが合致、
若しくは近接するように構成されている。In the seismic isolation member (A), the number of lead columns (4) is adjusted according to the absorbed energy of each column (6) position by the seismic isolation design of the building. A 1 )
In (A 2 ) and (A 3 ) the number of lead columns (4) is reduced,
The remaining seismic isolation member (A) is composed of a member in which three lead columns (4) shown in FIGS. 1 and 2 are arranged, and the position of the center of gravity G of the upper structure and the position of the seismic isolation position are determined. The position of the rigidity R matches,
Alternatively, they are configured to be close to each other.
また前記免震部材（Ａ）は設置個所の吸収エネルギに
応じて所要の前記空洞（３）に鉛柱（４）が嵌装され、
建築物の上部構造物と基礎部との間における、上部構造
物の柱（６）の直下に配設されているので、鉛柱（４）
が細くなり、上部構造物が振動して免震装置に水平変形
が生じた場合、剪断変形以外に曲げ変形が加わり、小地
震時においても長周期でエネルギを吸収して減衰効果を
発揮する。In addition, the seismic isolation member (A) has a lead column (4) fitted in the required cavity (3) according to the absorbed energy of the installation location,
Since it is disposed immediately below the column (6) of the superstructure between the superstructure and the foundation of the building, the lead column (4)
When the upper structure vibrates and horizontal deformation occurs in the seismic isolation device, bending deformation is applied in addition to shear deformation, and even during a small earthquake, energy is absorbed in a long cycle to exhibit a damping effect.
（発明の効果） 本発明に係る建築物の免震装置においては前記したよ
うに、建築物の基礎部と上部構造物との間に介装され
る、金属部片と弾性部片とを交互に重層してなる積層体
に、同心円周上に沿って複数の鉛柱嵌装用空洞を配設
し、吸収エネルギに応じて同空洞に嵌装される鉛柱の数
を調整することによって、上部構造物の重心位置と免震
装置の剛心位置とを合致、若しくは近接せしめ、各免震
部材が履歴特性を生かして地震時における回転振動を低
減することができる。また鉛プラグが太いと小地震時に
トリガー作用を生起し、免震建物としての効果が薄れる
が、鉛プラグが分散して配設されることによってトリガ
ー作用が低減されて、小地震時にも免震効果を発揮する
ことができる。(Effect of the Invention) In the seismic isolation device for a building according to the present invention, as described above, the metal part and the elastic part interposed between the foundation part of the building and the upper structure are alternately arranged. A plurality of plumbing fitting cavities are arranged along a concentric circle on the laminated body, and the number of plumbing fittings in the cavities is adjusted according to the absorbed energy. The position of the center of gravity of the structure and the position of the center of gravity of the seismic isolation device are matched or brought close to each other, and each seismic isolation member can take advantage of the hysteresis characteristics to reduce rotational vibration during an earthquake. If the lead plug is too thick, it triggers in the event of a small earthquake, and the effect as a seismic isolated building is diminished. The effect can be exhibited.
また上部構造物が振動して免震部材に水平変位を生起
した際、同部材には剪断変形以外に曲げ変形が加わり、
小地震時においても免震効果が発揮される。Also, when the upper structure vibrates and causes a horizontal displacement in the seismic isolation member, the member undergoes bending deformation in addition to shear deformation,
The seismic isolation effect is exhibited even during a small earthquake.
【図面の簡単な説明】 第１図は本発明に係る免震装置に使用される免震部材の
縦断面図で、第２図の矢視Ｉ−Ｉ図、第２図は前記免震
部材の横断平面図、第３図は本発明に係る免震装置を平
面が不整形の建築物に適用した平面図、第４図は従来の
免震部材の一部を欠截して示した斜視図、第５図はその
横断平面図である。 （Ａ）……免震部材、（１）……金属部片、 （２）……弾性部片、（３）……鉛柱嵌装用空洞、 （４）……鉛柱。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a seismic isolation member used in a seismic isolation device according to the present invention, and FIG. FIG. 3 is a plan view showing the seismic isolation device according to the present invention applied to a building having an irregular flat surface, and FIG. 4 is a perspective view showing a part of a conventional seismic isolation member. FIG. 5 is a cross-sectional plan view thereof. (A) ... seismic isolation member, (1) ... metal piece, (2) ... elastic piece, (3) ... cavity for lead column fitting, (4) ... lead column.
Claims (1)
る積層体の同心円周上に沿って、複数の鉛柱嵌装用空洞
を配設して構成された免震部材を、建築物の基礎部と上
部構造物との間に介装するとともに、吸収エネルギに応
じて前記免震部材の空洞に嵌装される鉛柱の数を調整し
て、前記上部構造物の重心位置と前記免震装置の剛心位
置とを合致、若しくは近接せしめてなることを特徴とす
る建築物の免震装置。1. A seismic isolation member comprising a plurality of lead column fitting cavities disposed along a concentric circumference of a laminate in which metal pieces and elastic pieces are alternately layered. The center of gravity of the upper structure is interposed between the foundation of the building and the upper structure by adjusting the number of lead columns fitted in the cavity of the seismic isolation member according to the absorbed energy. A seismic isolation device for a building, wherein the seismic isolation device and the rigid position of the seismic isolation device are matched or brought close to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2159675A JP2636950B2 (en) | 1990-06-20 | 1990-06-20 | Building seismic isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2159675A JP2636950B2 (en) | 1990-06-20 | 1990-06-20 | Building seismic isolation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0452384A JPH0452384A (en) | 1992-02-20 |
| JP2636950B2 true JP2636950B2 (en) | 1997-08-06 |
Family
ID=15698878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2159675A Expired - Fee Related JP2636950B2 (en) | 1990-06-20 | 1990-06-20 | Building seismic isolation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2636950B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5440453B2 (en) | 2010-09-01 | 2014-03-12 | 住友電装株式会社 | connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423504U (en) * | 1987-07-31 | 1989-02-08 |
-
1990
- 1990-06-20 JP JP2159675A patent/JP2636950B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452384A (en) | 1992-02-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |