JPS62141330A - Earthquake-force reducing device - Google Patents

Earthquake-force reducing device

Info

Publication number
JPS62141330A
JPS62141330A JP28103085A JP28103085A JPS62141330A JP S62141330 A JPS62141330 A JP S62141330A JP 28103085 A JP28103085 A JP 28103085A JP 28103085 A JP28103085 A JP 28103085A JP S62141330 A JPS62141330 A JP S62141330A
Authority
JP
Japan
Prior art keywords
laminated rubber
rubber
plates
friction
friction plates
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.)
Pending
Application number
JP28103085A
Other languages
Japanese (ja)
Inventor
Hirobumi Kondo
博文 近藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP28103085A priority Critical patent/JPS62141330A/en
Publication of JPS62141330A publication Critical patent/JPS62141330A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00Springs
    • F16F1/36Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/40Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers

Abstract

PURPOSE:To reduce the earthquake force acting on a structure, by placing friction plates one over another and in parallel with a laminated rubber so that the friction plates adjoining to each other act as friction surfaces. CONSTITUTION:A laminated rubber 1, in which rubber plates 2 and metal plates 3 are adhered to each other in an alternate manner, has the soft property in the horizontal direction and the rigid property in the vertical direction. A lower flange 4 is directly fixed to the bottom end of this laminated rubber 1, while an upper flange 6 is fixed to the top end of the rubber 1. The laminated rubber 1 is provided with a through-hole, which is normal to the laminate surface. Inside the laminated rubber 1 are placed friction plates 7 one over another in such a manner that the friction plates 7 are parallel with the laminated rubber 1 and that the height of both becomes almost equal to each other. With this contrivance, when the earthquake reducing device is deformed by the earthquake force, the rubber plates 2 cause the shear deformation in the horizontal direction. At the same time, the friction plates 7 also move in the horizontal direction in correspondence to the deformation of the laminated rubber 1. Thus, a slip takes place at the contact surface between respective friction plates, thereby reducing the earthquake force.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、機器または構造物に地震力を伝えないように
するための免震装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a seismic isolation device for preventing seismic forces from being transmitted to equipment or structures.

〔従来技術とその問題点〕[Prior art and its problems]

従来の免震装置は、第3図に示すように、複数個の積層
ゴム1と複数個の摩擦ダンパー9とから構成されている
。積層ゴム1は、基礎10上で構造物14の大部分の重
量を支えるとともに水平方向に柔な構造とし、これによ
り地震加速度の伝達を防ぐ機能を有している。また、摩
擦ダンパー9は、基礎10と構造物14との相対変位を
必要以上に大きくさせないようにエネルギー吸収を行う
とともに、小地震時や風など平常時に免震装置が作動す
ることがないようにする機能を有している。
A conventional seismic isolation device is comprised of a plurality of laminated rubber 1 and a plurality of friction dampers 9, as shown in FIG. The laminated rubber 1 supports most of the weight of the structure 14 on the foundation 10 and has a horizontally flexible structure, thereby having the function of preventing transmission of seismic acceleration. In addition, the friction damper 9 absorbs energy so as not to increase the relative displacement between the foundation 10 and the structure 14 more than necessary, and also prevents the seismic isolation device from operating during normal times such as small earthquakes and wind. It has the function of

従来技術のこのような免震装置では、摩擦ダンパー9は
積層ゴムlから独立しており、その構造は次のようにな
っている。すなわち、基礎上においてその軸を垂直に向
けて固定された筒状ケース11内の上端開口部に、上面
に摩擦材12の設けられた台座13を有し、これがその
下側に設けられた弾発部材8によって構造物の下面に押
圧されるような構造になっている。そして、構造物の下
面には、摩擦材との接触面の移動する範囲にわたって摩
擦板15が設けられている。従って、このような構造の
場合には、構造物下面と基礎との間の空間が狭くなるた
めに建設後の免震装置への接近が困難になること、また
、免凝装置の据付けに多くの作業を要すること等の問題
点が存在する。
In such a conventional seismic isolation device, the friction damper 9 is independent from the laminated rubber l, and its structure is as follows. That is, a pedestal 13 with a friction material 12 provided on its upper surface is provided at the upper end opening of a cylindrical case 11 fixed on a foundation with its axis vertically oriented, and this pedestal 13 has a pedestal 13 provided with a friction material 12 on its upper surface. The structure is such that it is pressed against the lower surface of the structure by the generating member 8. A friction plate 15 is provided on the lower surface of the structure over a range in which the contact surface with the friction material moves. Therefore, in the case of such a structure, the space between the bottom of the structure and the foundation becomes narrow, making it difficult to access the seismic isolation device after construction, and the installation of the isolation device requires a lot of effort. There are problems such as the need for additional work.

〔発明の目的〕[Purpose of the invention]

本発明は、以上のような事情に鑑みてなされたもので、
コンパクトで据付は作業の容易な免震装置を提供するこ
とを目的とする。
The present invention was made in view of the above circumstances, and
The purpose is to provide a seismic isolation device that is compact and easy to install.

〔発明の概要〕[Summary of the invention]

本発明は、ゴム板と金属板さを交互に接着した積層ゴム
に積層面に垂直な貫通孔を設け、内部に複数枚の摩擦板
を積層ゴムと平行に重ねて互いに隣接する摩擦板同志が
摩擦面(すべり面)を形成するようにし、さらに、弾発
部材を設けて積層された摩擦板の一端あるいは両端を押
圧することによって摩擦ダンパーの機能を持たせたこと
を特徴とする免震装置である。
In the present invention, a through hole is provided perpendicular to the laminated surface in a laminated rubber made by alternately bonding rubber plates and metal plates, and a plurality of friction plates are stacked inside in parallel with the laminated rubber, so that adjacent friction plates are A seismic isolation device characterized in that a friction surface (sliding surface) is formed, and an elastic member is provided to press one or both ends of the laminated friction plates to provide a friction damper function. It is.

〔発明の効果〕〔Effect of the invention〕

本発明による免震装置は、地震時における構造物に作用
する地震力を大幅に低減することができるばかりでなく
、従来技術に比較して、原振ダンパー機能を積層ゴム内
部に組込んでいるために、装置が非常にコンパクトにな
り、据付作業や建設後の接近が容易となる。また、摩擦
板の摩擦面が大気にざらされることがないために信頼性
が高い。
The seismic isolation device according to the present invention not only can significantly reduce the seismic force acting on the structure during an earthquake, but also incorporates an original vibration damper function inside the laminated rubber, compared to conventional technology. This makes the device very compact and easy to install and access after construction. In addition, reliability is high because the friction surface of the friction plate is not exposed to the atmosphere.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.

第1図および第2図に、本発明の一実施例を示す。第1
図は平常時の状態を、第2図は地震時において力を受け
て変形した時の状態を示している。
An embodiment of the present invention is shown in FIGS. 1 and 2. FIG. 1st
The figure shows the state under normal conditions, and Figure 2 shows the state when deformed due to force during an earthquake.

1は積層ゴムで、ゴム板2と金属板3とを交互に接着す
ることによって、水平方向には柔、上下方向には剛な特
性を有している。これにより大重量を支持することがで
き、水平方向には固有振動数を低くして地震加速度の伝
達を防ぐことができる。この積層ゴムの下端には下フラ
ンジ4が直接に、また、上端には弾発部材ケース5を介
して上フランジ6が固着されている。積層ゴムには、積
層面に垂直な貫通孔が設けられており、内部には摩擦板
7が積層ゴムと平行に重ね合わされ積層ゴムの高さとほ
ぼ同程度になっている。そしてこの積層された摩擦板の
上端に垂直力が作用するように、予め圧縮荷重をかけて
おいたゴムなどの弾発部材8が弾発部材ケース内に挿入
されている。
Reference numeral 1 is a laminated rubber, which has characteristics of being soft in the horizontal direction and rigid in the vertical direction by alternately bonding rubber plates 2 and metal plates 3. This allows it to support a large amount of weight, and lowers the natural frequency in the horizontal direction to prevent the transmission of seismic acceleration. A lower flange 4 is directly fixed to the lower end of this laminated rubber, and an upper flange 6 is fixed to the upper end via a resilient member case 5. The laminated rubber is provided with a through hole perpendicular to the laminated surface, and a friction plate 7 is stacked inside in parallel with the laminated rubber so that the height thereof is approximately the same as that of the laminated rubber. A resilient member 8 made of rubber or the like, to which a compressive load has been previously applied, is inserted into the resilient member case so that a vertical force acts on the upper end of the stacked friction plates.

この免震装置が地震力を受けて変形すると、ゴム板が水
平方向に剪断変形して第2図のようになり、同時に内部
の摩擦板も積層ゴムの変形に応じて水平方向に移動して
、各摩擦板間の接触面ですべりが生じる。このとき、摩
擦板の押付力をF1摩擦係数をμ、各面でのすべり変位
をδ。とすると摩擦力によって吸収されるエネルギーE
はE=μNx(δ1+δ駕十・・・+aN)  ・・・
・・・・・・・・−・・・・・・・・(1)となる。た
だし、Nは摩擦板の数である。構造物下端と基礎との相
対変をdとすると d=δ1+δ、+・・・+δ、  ・・・・・・・・・
・・・・・・・・・・・・・・・・・・(2)であるか
ら(11式は E=μFd       ・・・・・・・・・・・・・
・・・・・・・・・・・・・・(3)となり、押付力F
および摩擦係数μを同じにすれば、従来の摩擦ダンパー
と同様な効果を有していることがわかる。つまり、本発
明の免震装置によれば、従来の免震装置に較べて、エネ
ルギー吸収能力を減じることなしに非常にコンパクトに
することができるわけである。さらに、従来の免震装置
のように、摩擦板の摩擦面が大気にさらされることがな
いため信頼性ははるかに高いものである。
When this seismic isolation device deforms due to the earthquake force, the rubber plate shears horizontally and becomes deformed as shown in Figure 2.At the same time, the internal friction plate also moves horizontally in response to the deformation of the laminated rubber. , slipping occurs at the contact surfaces between each friction plate. At this time, the pressing force of the friction plate is F1, the friction coefficient is μ, and the sliding displacement on each surface is δ. Then, the energy E absorbed by the frictional force is
is E=μNx(δ1+δ駕十...+aN)...
・・・・・・・・・−・・・・・・・・・(1). However, N is the number of friction plates. If the relative change between the lower end of the structure and the foundation is d, then d=δ1+δ, +...+δ, ......
・・・・・・・・・・・・・・・・・・ Since (2) (Equation 11 is E=μFd ・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・(3) becomes, and the pressing force F
It can be seen that if the friction coefficient μ is the same, the friction damper has the same effect as the conventional friction damper. In other words, the seismic isolation device of the present invention can be made much more compact than conventional seismic isolation devices without reducing energy absorption capacity. Furthermore, unlike conventional seismic isolation devices, the friction surfaces of the friction plates are not exposed to the atmosphere, so reliability is much higher.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明の1実施例の免震装置の断面図、第2
図は、その免震装置が変形したときの断面図、第3図は
、従来の免震装置の断面図である。 1・・・積層ゴム、2・・・ゴム板、3・・・金属板、
4・・・下フランジ、5・・・弾発部材ケース、6・・
・上フランジ、7・・・摩擦板、8・・・弾発部材、9
・・・摩擦ダンパー、10・・・基礎、11・・・筒状
ケース、12・・・摩擦材、13・・・台座、14・・
・構造物、15・・・摩擦板。 代理人 弁理士 則 近 憲 佑 同    竹 花 喜久男
FIG. 1 is a sectional view of a seismic isolation device according to one embodiment of the present invention, and FIG.
The figure is a sectional view of the seismic isolation device when it is deformed, and FIG. 3 is a sectional view of the conventional seismic isolation device. 1... Laminated rubber, 2... Rubber plate, 3... Metal plate,
4... Lower flange, 5... Resilient member case, 6...
- Upper flange, 7... Friction plate, 8... Resilient member, 9
... Friction damper, 10 ... Foundation, 11 ... Cylindrical case, 12 ... Friction material, 13 ... Pedestal, 14 ...
・Structure, 15...Friction plate. Agent Patent Attorney Nori Chika Yudo Kikuo Takehana

Claims (1)

【特許請求の範囲】[Claims] ゴム板と金属板とを交互に接着するとともに積層面に垂
直に貫通孔を設けた積層ゴムと、前記積層ゴムの両端面
に固着されたフランジと、前記積層ゴムの孔内に積層さ
れた複数枚の摩擦板と、前記摩擦板を垂直方向に押圧す
る予圧を与えた弾発部材とからなることを特徴とする免
震装置。
A laminated rubber in which rubber plates and metal plates are alternately bonded and a through hole is provided perpendicular to the laminated surface, a flange fixed to both end surfaces of the laminated rubber, and a plurality of laminated rubber plates laminated in the holes of the laminated rubber. 1. A seismic isolation device comprising two friction plates and an elastic member that applies preload to press the friction plates in a vertical direction.
JP28103085A 1985-12-16 1985-12-16 Earthquake-force reducing device Pending JPS62141330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28103085A JPS62141330A (en) 1985-12-16 1985-12-16 Earthquake-force reducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28103085A JPS62141330A (en) 1985-12-16 1985-12-16 Earthquake-force reducing device

Publications (1)

Publication Number Publication Date
JPS62141330A true JPS62141330A (en) 1987-06-24

Family

ID=17633309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28103085A Pending JPS62141330A (en) 1985-12-16 1985-12-16 Earthquake-force reducing device

Country Status (1)

Country Link
JP (1) JPS62141330A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0264604U (en) * 1988-11-05 1990-05-15
US5014474A (en) * 1989-04-24 1991-05-14 Fyfe Edward R System and apparatus for limiting the effect of vibrations between a structure and its foundation
US5368914A (en) * 1993-03-03 1994-11-29 The United States Of America As Represented By The Secretary Of The Navy Vibration-damping structural component
US5373670A (en) * 1988-05-06 1994-12-20 Sumitomo Gomu Kogyo Kabushiki Kaisha Shakeproof bearing
EP0670973A1 (en) * 1992-12-04 1995-09-13 Damping Systems Limited Energy absorbers and methods of manufacture
JPH11125306A (en) * 1997-10-23 1999-05-11 Bridgestone Corp Base isolation system
JP2004032959A (en) * 2002-06-28 2004-01-29 Bridgestone Corp Aseismatic pad, glass apparatus attaching structure and apparatus for substation facility
WO2008004475A1 (en) 2006-07-06 2008-01-10 Oiles Corporation Earthquake isolation device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373670A (en) * 1988-05-06 1994-12-20 Sumitomo Gomu Kogyo Kabushiki Kaisha Shakeproof bearing
JPH0264604U (en) * 1988-11-05 1990-05-15
US5014474A (en) * 1989-04-24 1991-05-14 Fyfe Edward R System and apparatus for limiting the effect of vibrations between a structure and its foundation
EP0670973A1 (en) * 1992-12-04 1995-09-13 Damping Systems Limited Energy absorbers and methods of manufacture
EP0670973A4 (en) * 1992-12-04 1996-02-28 Ind Res Ltd Energy absorbers and methods of manufacture.
US5368914A (en) * 1993-03-03 1994-11-29 The United States Of America As Represented By The Secretary Of The Navy Vibration-damping structural component
JPH11125306A (en) * 1997-10-23 1999-05-11 Bridgestone Corp Base isolation system
JP2004032959A (en) * 2002-06-28 2004-01-29 Bridgestone Corp Aseismatic pad, glass apparatus attaching structure and apparatus for substation facility
JP4497795B2 (en) * 2002-06-28 2010-07-07 株式会社ブリヂストン Seismic pads, insulator mounting structure, and transformer equipment
WO2008004475A1 (en) 2006-07-06 2008-01-10 Oiles Corporation Earthquake isolation device
EP2039958A4 (en) * 2006-07-06 2017-02-15 Oiles Corporation Earthquake isolation device

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