JP2778966B2 - Seismic isolation isolators - Google Patents
Seismic isolation isolatorsInfo
- Publication number
- JP2778966B2 JP2778966B2 JP63331813A JP33181388A JP2778966B2 JP 2778966 B2 JP2778966 B2 JP 2778966B2 JP 63331813 A JP63331813 A JP 63331813A JP 33181388 A JP33181388 A JP 33181388A JP 2778966 B2 JP2778966 B2 JP 2778966B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- seismic isolation
- metal
- rubber
- rubber plate
- 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
- 238000002955 isolation Methods 0.000 title claims description 37
- 239000002184 metal Substances 0.000 claims description 52
- 239000000853 adhesive Substances 0.000 description 17
- 230000001070 adhesive effect Effects 0.000 description 16
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000004073 vulcanization Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Springs (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は免震アイソレーターに係り、特に非接着タイ
プおよび接着部分を減じたタイプの免震アイソレーター
に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation isolator, and more particularly, to a non-adhesive type and a seismic isolation isolator having a reduced number of adhesive portions.
［従来の技術］ 従来より、地震をはじめ、電車、自動車その他などに
よる振動を小さくする免震装置が、高層ビル、超精密工
場、原子炉家屋、電算機センター、高度医療施設等に導
入され、その一つとして免震アイソレーターが利用され
ている。この免震アイソレーターは、免震性能を有効に
作用させるため、水平方向のばね定数を軟らかく、鉛直
方向のばね定数を硬くして要求条件にかなうように設計
し、第７図に示すように、ゴム板２と金属板（内金具
３）とを層状に多数積層したもので、ゴム板２と内金具
３とは交互に加硫接着され、上下からねじ６によりプレ
ート（51、52）に固定される外金具１で挟んだ構造であ
る。[Prior art] Conventionally, seismic isolation devices that reduce vibrations caused by earthquakes, trains, automobiles, etc. have been introduced in high-rise buildings, ultra-precision factories, reactor houses, computer centers, advanced medical facilities, etc. As one of them, seismic isolation isolators are used. This seismic isolator is designed to meet the required conditions by making the spring constant in the horizontal direction soft and the spring constant in the vertical direction hard to make the seismic isolation performance work effectively, as shown in FIG. A rubber plate 2 and a metal plate (inner fitting 3) are laminated in large numbers in layers, and the rubber plate 2 and the inner fitting 3 are alternately vulcanized and adhered, and are fixed to the plates (51, 52) by screws 6 from above and below. This is a structure sandwiched between outer metal fittings 1 to be formed.
［発明が解決すべき課題］ ところで、この免震アイソレーターは防振ゴム板に較
べると極めて大型（300φ〜1000φmm）であるため、均
一な加硫接着には、接着剤塗布作業・金属板の表面処理
作業等の手間と、加熱成形加硫条件の厳しい管理と、大
型の成形加硫機等高価な設備投資が必要である。[Problems to be Solved by the Invention] By the way, since this seismic isolation isolator is extremely large (300 to 1000 mm) as compared with the vibration-isolating rubber plate, uniform vulcanization bonding requires an adhesive application operation and a metal plate surface. It requires labor such as processing work, strict control of heating molding vulcanization conditions, and investment in expensive equipment such as a large molding vulcanizer.
［発明の目的］ 本発明は上記の点を解決するためになされたもので、
手間のかかる接着剤塗布作業・金属板の表面処理作業、
加熱成形加硫条件の厳しい管理等を極力減らし、免震性
能の優れた非接着タイプおよび加硫接着部分を減じたタ
イプの免震アイソレーターを提供することを目的とす
る。[Object of the Invention] The present invention has been made to solve the above problems,
Time-consuming adhesive application work, metal plate surface treatment work,
An object of the present invention is to provide a non-adhesive type having excellent seismic isolation performance and a type of seismic isolator having a reduced number of vulcanized adhesive parts by minimizing strict control of vulcanization conditions under heat molding.
［課題を解決するための手段］ 上記の目的を達成するために、本発明の免震アイソレ
ーターは、複数の金属板とゴム板とを交互に積層して成
る免震アイソレーターにおいて、金属板とゴム板とを非
接着状態とし、金属板のうち、最外層の金属板とこの金
属板に接する１層目のゴム板とを接着した構造であり、
または複数の金属板とゴム板とを積層して成る免震アイ
ソレーターにおいて、金属板とゴム板とを非接着状態と
し、金属板のうち、最外層の金属板とこの金属板に接す
る１層目のゴム板及び最外層以外の金属板とこれらの金
属板に接するゴム板とを接着した構造である。[Means for Solving the Problems] In order to achieve the above object, a seismic isolation isolator according to the present invention is a seismic isolation isolator comprising a plurality of metal plates and a rubber plate alternately stacked, wherein a metal plate and a rubber The plate is in a non-adhered state, and the outermost metal plate of the metal plates is bonded to a first-layer rubber plate in contact with the metal plate.
Alternatively, in a seismic isolation isolator formed by laminating a plurality of metal plates and a rubber plate, the metal plate and the rubber plate are in a non-adhered state, and the outermost metal plate of the metal plates and the first layer in contact with the metal plate. And a metal plate other than the outermost layer and a rubber plate in contact with these metal plates.
［実施例］ 以下、本発明による免震アイソレーターの好ましい実
施例を図面を用いて説明する。Hereinafter, a preferred embodiment of a seismic isolation isolator according to the present invention will be described with reference to the drawings.
第７図に示すように免震アイソレーターは、免震対象
物８が載置される上プレート51と、免震対象物が設置さ
れる架台９上にあって上プレートに対向設置される下プ
レート52とにそれぞれ固定される金属板としての外金具
１間にゴム板２を複数積層し、多数積層された前記ゴム
板２の間に金属板としての内金具３を挟着して成る。As shown in FIG. 7, the seismic isolation isolator is composed of an upper plate 51 on which the seismic isolation target 8 is placed and a lower plate on the gantry 9 on which the seismic isolation target is installed and opposed to the upper plate. 52, a plurality of rubber plates 2 are laminated between outer metal members 1 as metal plates fixed to the respective metal plates 52, and an inner metal member 3 as a metal plate is sandwiched between the plurality of laminated rubber plates 2.
本発明による非接着タイプの（単に積層しただけの）
免震アイソレーターを用いて、水平方向に大きな変位を
生ずる場合のゴム板２と金属板（１、３）間（外金具１
および内金具３とゴム板２との間）において生ずるずれ
を、第８図に示すように500φ免震アイソレーターの水
平方向復元力特性で調べた。本発明による非接着タイプ
の500φ免震アイソレーターを２個重ね、上下垂直方向
に340tの加重を付加し、高さ方向中間部に水平方向に＋
50mm5回、＋150mm3回、＋20mm3回の変位を与え、変位−
剪断力の関係を調べたものである。この結果、ゴム板２
と金属板（１、３）間の変形のずれは、上下方向の加重
によって強く圧着されているため、本発明のようにゴム
板２と金属板（１、３）とが非接着の場合でも、実用に
は供し得る程度に僅かである。なお、本発明による非接
着タイプの免震アイソレーターと、従来の加硫接着タイ
プの免震アイソレーターとの性能を比較すると、垂直方
向のばね定数は共に1250〜1350t/cm、水平方向のばね定
数は従来の加硫接着タイプの免震アイソレーターが0.80
〜0.84t/cmであるのに対し、本発明による非接着タイプ
の免震アイソレーターが0.70〜0.75t/cmで若干低い。ま
た、500φ免震アイソレーターの水平復元力特性、クリ
ープ特性は第９図（上下垂直方向に120tの加重を付
加）、第10図（圧縮加重σ＝150kgf/cm2、試験温度24〜
25℃）に示すようにほぼ同等の性能を示した。Non-adhesive type (only laminated) according to the present invention
When a large displacement occurs in the horizontal direction by using a seismic isolation isolator, the rubber plate 2 and the metal plates (1, 3) (the outer bracket 1
And between the inner metal fitting 3 and the rubber plate 2) were examined by the horizontal restoring force characteristics of a 500φ seismic isolation isolator as shown in FIG. Two non-adhesive 500φ seismic isolators according to the present invention are stacked, and a load of 340t is added vertically and vertically, and +
Apply 50mm 5 times, + 150mm 3 times, + 20mm 3 times displacement
It is an examination of the relationship between shear forces. As a result, the rubber plate 2
The displacement between the metal plate (1, 3) and the metal plate (1, 3) is strongly pressurized by the vertical load, so even if the rubber plate 2 and the metal plate (1, 3) are not bonded as in the present invention. However, it is small enough to be practically used. Incidentally, when comparing the performance of the non-adhesive type seismic isolation isolator according to the present invention and the conventional vulcanized adhesion type seismic isolation isolator, both the vertical spring constant is 1250 to 1350 t / cm and the horizontal spring constant is 0.80 of conventional vulcanized adhesive type seismic isolation isolators
While it is 0.80.84 t / cm, the non-adhesive type base-isolated isolator according to the present invention is slightly lower at 0.70〜0.75 t / cm. The horizontal restoring force characteristics of 500φ seismic isolation isolator, creep properties (added weight of 120t in the vertical direction perpendicular) Fig. 9, FIG. 10 (compressive load σ = 150kgf / cm 2, test temperature 24 to
(25 ° C.).
上記のように本発明による非接着タイプの免震アイソ
レーターは実用に供し得るものであるが、外金具１とそ
れに接するゴム板２との間で、時にはゴム板２の辺縁の
一部に僅かな剥離が生ずる。As described above, the non-adhesion type seismic isolation isolator according to the present invention can be used for practical use. However, a small part of the periphery of the rubber plate 2 is sometimes placed between the outer metal fitting 1 and the rubber plate 2 in contact with it. Peeling occurs.
その剥離を防止するため、以下のように、一部加硫接
着タイプの免震アイソレーターとした。In order to prevent the peeling, a partially vulcanized adhesive type seismic isolation isolator was used as follows.
（１）第１図に示すように、外金具１と外金具１に接す
る１層目のゴム板２とを加硫接着して一体化したもの
を、上下にゴム板２の面を対向させ、その間に、内金具
３とゴム板２を交互に非接着状態で多数積層し、最後に
また内金具３を積層する。こうして外金具１とそれに接
するゴム板２との間に僅かに生ずる外金具１からの辺縁
の一部の剥離が生ずるのを防止するものである。(1) As shown in FIG. 1, an outer fitting 1 and a first-layer rubber plate 2 that is in contact with the outer fitting 1 are integrated by vulcanization and bonding, and the surfaces of the rubber plate 2 are vertically opposed. In the meantime, the inner fittings 3 and the rubber plates 2 are alternately laminated in a non-adhesive state, and finally the inner fittings 3 are laminated again. In this way, the peeling of a part of the edge from the outer fitting 1 that occurs slightly between the outer fitting 1 and the rubber plate 2 in contact therewith is prevented.
ゴム板２の辺縁の一部に生ずる外金具１からの僅かな
剥離を防止し、更に、内金具３とゴム板２間のずれをも
完全に防止し、かつ加硫接着部分を極力減じるため、 （２）第２図に示すように外金具１と外金具１に接する
１層目のゴム板２とを加硫接着して一体化したものを、
上下にゴム板２の面を対向させ、その間に、内金具３の
両面にゴム板２を加硫接着して一体化したものを多数積
層する。この場合、多数積層部分は”ゴム板２・ゴム板
２・内金具3"の繰返しとなり、”ゴム板２・ゴム板2"間
は非接着状態である。It prevents slight peeling of the rubber plate 2 from the outer fitting 1 occurring at a part of the periphery thereof, further completely prevents the displacement between the inner fitting 3 and the rubber plate 2 and reduces the vulcanized adhesive portion as much as possible. (2) As shown in FIG. 2, the outer metal member 1 and the first-layer rubber plate 2 in contact with the outer metal member 1 are integrated by vulcanization bonding.
The rubber plate 2 is made to face the upper and lower surfaces, and a large number of the rubber plates 2 are vulcanized and adhered to both surfaces of the inner metal fitting 3 to be integrated. In this case, the multi-layered portion is a repetition of "rubber plate 2 / rubber plate 2 / inner fitting 3", and the "rubber plate 2 / rubber plate 2" is not bonded.
また、ゴム板２の辺縁の一部に生ずる外金具１からの
僅かな剥離を防止し、更に、金属板（１、３）とゴム板
２間のずれをも完全に防止し、かつ加硫接着部分を極力
減じるため、 （３）第３図、第４図に示すように外金具１と内金具３
それぞれに孔４を設ける。各ゴム板２の両面は非接着状
態である。この孔４は第５図に示すように金属板３を貫
通していても、第６図に示すように金属板３の両面から
凹部を形成していても、孔４に接するゴム板２には突起
部21を設ける。この突起部21が金属板の孔４に食込み、
金属板（１、３）とゴム板２間のずれを防止しするのに
好適である。また（１）のように、外金具１と外金具１
に接する１層目のゴム板２とを加硫接着して一体化した
ものを、上下にゴム板２の面を対向させ、その間に、孔
４を設けた内金具３と突起部21を設けたゴム板２を交互
に多数積層し、最後にまた孔４を設けた内金具３を積層
してもよい。Further, it prevents slight peeling of the rubber plate 2 from the outer fitting 1 occurring at a part of the periphery, furthermore, completely prevents displacement between the metal plates (1, 3) and the rubber plate 2, and (3) As shown in FIGS. 3 and 4, the outer fitting 1 and the inner fitting 3
Each is provided with a hole 4. Both surfaces of each rubber plate 2 are in a non-adhered state. The hole 4 penetrates the metal plate 3 as shown in FIG. 5 or the concave portion is formed from both sides of the metal plate 3 as shown in FIG. Is provided with a projection 21. The protrusion 21 cuts into the hole 4 of the metal plate,
It is suitable for preventing the displacement between the metal plate (1, 3) and the rubber plate 2. Also, as shown in (1), the outer fitting 1 and the outer fitting 1
The first metal plate 2 contacting with the rubber plate 2 is vulcanized and bonded to form an integrated body, the upper and lower surfaces of the rubber plate 2 are opposed to each other, and an inner fitting 3 provided with a hole 4 and a projection 21 are provided therebetween. A large number of the rubber plates 2 may be alternately laminated, and finally, the inner fitting 3 provided with the hole 4 may be laminated.
尚、本実施例では、免震対象物が載置される上プレー
トと上プレートに対向設置される下プレートそれぞれに
外金具が固定される例で説明したが、上下各プレートと
外金具が一体形成される場合もある。In the present embodiment, an example is described in which the outer brackets are fixed to the upper plate on which the seismic isolation target is placed and the lower plate opposed to the upper plate, but the upper and lower plates and the outer bracket are integrated. It may be formed.
上記のように作成した本発明による免震アイソレータ
ーは、金属板（１、３）の錆を防ぐため、第７図に示す
ように保護ゴム７で包囲することが好ましい。The seismic isolation isolator according to the present invention prepared as described above is preferably surrounded by a protective rubber 7 as shown in FIG. 7 in order to prevent rust on the metal plates (1, 3).
［発明の効果］ 以上の実施例からも明らかなように、本発明の免震ア
イソレーターによれば、手間のかかる接着剤塗布作業・
金属板の表面処理作業、加熱成形加硫条件の厳しい管理
等を極力減らし、免震性能の優れた非接着タイプおよび
加硫接着部分を減じたタイプの免震アイソレーターとな
る。[Effects of the Invention] As is clear from the above embodiments, according to the seismic isolation isolator of the present invention, it takes time and effort to apply the adhesive.
The surface treatment work for metal sheets and the strict control of vulcanization conditions under heat molding are reduced as much as possible, resulting in a non-adhesive type with excellent seismic isolation performance and a type of seismic isolation isolator with reduced vulcanized adhesive parts.
第１図は、本発明による免震アイソレーターの一実施例
を説明する図、第２図及び第３図は本発明による免震ア
イソレーターの他の実施例を説明する図、第４図は一実
施例の内外各金具の孔を示す平面図、第５図及び第６図
はそれぞれ第３図の要部の断面図、第７図は免震アイソ
レーターの説明図、第８図は本発明による500φ免震ア
イソレーターの水平方向復元力特性を示す図、第９図は
本発明による500φ免震アイソレーターと従来の500φ免
震アイソレーターとの水平方向復元力特性を比較した
図、第10図は本発明による500φ免震アイソレーターと
従来の500φ免震アイソレーターとのクリープ特性を比
較した図である。 １……金属板（外金具） ２……ゴム板 21……突起部 ３……金属板（内金具） ４……孔 51……上プレート 52……下プレート ６……ねじ ７……保護ゴム ８……免震対象物 ９……架台FIG. 1 is a diagram illustrating an embodiment of a seismic isolation isolator according to the present invention, FIGS. 2 and 3 are diagrams illustrating another embodiment of a seismic isolation isolator according to the present invention, and FIG. 5 and 6 are cross-sectional views of main parts of FIG. 3, FIG. 7 is an explanatory view of a seismic isolation isolator, and FIG. 8 is a 500φ according to the present invention. FIG. 9 shows the horizontal restoring force characteristics of the seismic isolation isolators. FIG. 9 is a diagram comparing the horizontal restoring force characteristics of the 500φ seismic isolator according to the present invention with the conventional 500φ seismic isolator, and FIG. It is the figure which compared the creep characteristic of the 500φ seismic isolation isolator with the conventional 500φ seismic isolation isolator. DESCRIPTION OF SYMBOLS 1 ... Metal plate (outer fitting) 2 ... Rubber plate 21 ... Projection part 3 ... Metal plate (inner fitting) 4 ... Hole 51 ... Upper plate 52 ... Lower plate 6 ... Screw 7 ... Protection Rubber 8: Seismic isolation target 9: Stand
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実公 昭36−4504（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.6，ＤＢ名) F16F 1/00 - 6/00 E04B 1/36 E04H 9/02 331────────────────────────────────────────────────── ─── Continuation of the front page (56) References Jikken 36-4504 (JP, Y1) (58) Fields investigated (Int. Cl. 6 , DB name) F16F 1/00-6/00 E04B 1 / 36 E04H 9/02 331
Claims (2)
成る免震アイソレーターにおいて、前記金属板と前記ゴ
ム板とを非接着状態とし、前記金属板のうち、最外層の
金属板とこの金属板に接する１層目のゴム板とを接着し
たことを特徴とする免震アイソレーター。1. A seismic isolation isolator comprising a plurality of metal plates and rubber plates alternately stacked, wherein the metal plate and the rubber plate are in a non-adhered state, and an outermost metal plate of the metal plates is provided. And a first-layer rubber plate in contact with the metal plate.
震アイソレーターにおいて、前記金属板と前記ゴム板と
を非接着状態とし、前記金属板のうち、最外層の金属板
とこの金属板に接する１層目のゴム板及び前記最外層以
外の金属板とこれらの金属板に接するゴム板とを接着し
たことを特徴とする免震アイソレーター。2. A seismic isolator comprising a plurality of metal plates and a rubber plate laminated on each other, wherein the metal plate and the rubber plate are in a non-adhered state, and an outermost metal plate of the metal plate and A seismic isolation isolator comprising a first-layer rubber plate in contact with a metal plate and a metal plate other than the outermost layer and a rubber plate in contact with these metal plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63331813A JP2778966B2 (en) | 1988-12-28 | 1988-12-28 | Seismic isolation isolators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63331813A JP2778966B2 (en) | 1988-12-28 | 1988-12-28 | Seismic isolation isolators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02176227A JPH02176227A (en) | 1990-07-09 |
| JP2778966B2 true JP2778966B2 (en) | 1998-07-23 |
Family
ID=18247934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63331813A Expired - Fee Related JP2778966B2 (en) | 1988-12-28 | 1988-12-28 | Seismic isolation isolators |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2778966B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2664667B1 (en) * | 1990-07-12 | 1993-07-16 | Barca Didier | VIBRATION DAMPING DEVICE. |
| JP2839988B2 (en) * | 1992-07-31 | 1998-12-24 | 株式会社日本免震研究センター | Laminated rubber bearing |
| JP2008008430A (en) * | 2006-06-29 | 2008-01-17 | Yamatake Corp | Vibration-proof fixing structure |
| JP5266768B2 (en) * | 2008-01-21 | 2013-08-21 | 株式会社ジェイテクト | Circuit board fixing structure of motor unit and motor unit having this circuit board fixing structure |
-
1988
- 1988-12-28 JP JP63331813A patent/JP2778966B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02176227A (en) | 1990-07-09 |
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