JP2951214B2 - 3D seismic isolation device - Google Patents
3D seismic isolation deviceInfo
- Publication number
- JP2951214B2 JP2951214B2 JP21238794A JP21238794A JP2951214B2 JP 2951214 B2 JP2951214 B2 JP 2951214B2 JP 21238794 A JP21238794 A JP 21238794A JP 21238794 A JP21238794 A JP 21238794A JP 2951214 B2 JP2951214 B2 JP 2951214B2
- Authority
- JP
- Japan
- Prior art keywords
- laminated rubber
- seismic isolation
- rubber portion
- lead core
- 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.)
- Expired - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、建築構造物や土木構
造物および機器設備を対象にしており、それらの耐震性
の向上ならびに経済的合理化の観点から、被構造物を支
持する免震装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to building structures, civil engineering structures and equipment, and from the viewpoint of improving seismic resistance and economical rationalization, seismic isolation devices for supporting structures. It is about.
【０００２】[0002]
【従来の技術】従来、この種の免震装置、即ち、建物全
体や橋梁桁等の支持装置として用いられる免震装置に
は、複数のゴム板がプレートを介在して積み重ねられて
いる積層ゴム部に、この積層ゴム部の支承用として、各
種のダンパーを組み合わせたものがある。2. Description of the Related Art Conventionally, this type of seismic isolation device, that is, a seismic isolation device used as a support device for an entire building, a bridge girder, or the like, has a laminated rubber structure in which a plurality of rubber plates are stacked with plates interposed therebetween. In some parts, various dampers are combined to support the laminated rubber part.
【０００３】そして、このダンパーは、様々な創案がな
されており、その代表例として、各種形状の鋼材を用い
たものや、高分子化合物の粘性体を用いたものや、鉛を
封入したもの（鉛単体として扱ったもの）が知られてい
る。Various proposals have been made for this damper. Typical examples of the damper include those using steel materials of various shapes, those using a viscous body of a polymer compound, and those encapsulating lead ( (Treated as lead alone) is known.
【０００４】また、この他に、積層ゴム部自身にダンパ
ー機能を持たせたもの、即ち、プレーンなゴムに高減衰
剤を化合させ、ゴム自身にダンパー機能を保有させた高
減衰積層ゴム装置もある。[0004] In addition, there is also a device in which a laminated rubber portion itself has a damping function, that is, a high damping laminated rubber device in which a plain rubber is compounded with a high damping agent and the rubber itself has a damping function. is there.
【０００５】[0005]
【この発明が解決しようとする課題】しかし、従来の各
種免震装置、例えば、前述した従来の免震装置について
は、殆ど、水平方向の地震を対象としたものであり、水
平方向と共に、上下方向の地震も対象とした事例は少な
い。However, the conventional various seismic isolation devices, for example, the above-described conventional seismic isolation devices, are mostly intended for horizontal earthquakes. There are few cases where earthquakes in the direction were also targeted.
【０００６】この上下方向の地震も対象とした事例が少
ない理由としては、先ず、上下方向の耐震性が、構造物
として余り必要性を認められなかった。また、上下方向
も免震にすると、水平方向の地震と連成して（ロッキン
グが生ずる）、構造物の応答挙動が複雑になる。[0006] The reason that the number of cases in which vertical earthquakes are also targeted is small is that the need for earthquake resistance in the vertical direction is not so much recognized as a structure. Further, if the vertical direction is seismically isolated, it is coupled with the horizontal earthquake (rocking occurs), and the response behavior of the structure becomes complicated.
【０００７】さらに、ハード技術として、小さい変形範
囲でのダンパーが難しく、同時に水平方向の追従性も要
求されることから、上下方向の免震装置の開発が困難で
ある。しかも、上下方向のダンパーを設けると、構造物
下部の免震層スペースが混雑してしまい、設計上，施工
上やメンテナンス上から、各種の不合理が生ずることと
なる。Further, as a hardware technology, it is difficult to perform a damper in a small deformation range, and at the same time, a horizontal follow-up property is required. Therefore, it is difficult to develop a vertical seismic isolation device. In addition, when the dampers are provided in the vertical direction, the space of the seismic isolation layer under the structure becomes congested, and various unreasonable situations arise in terms of design, construction, and maintenance.
【０００８】このようなことから、上下方向の地震も対
象とした事例が少ないわけであるが、一方では、近年、
特に、建物に内包する重要機器の耐震性向上の観点か
ら、水平方向に加えて上下方向の免震要求が高まってき
ている。[0008] For these reasons, there are few cases in which vertical earthquakes are also targeted.
In particular, from the viewpoint of improving the seismic resistance of important equipment included in a building, the demand for seismic isolation in the vertical direction in addition to the horizontal direction is increasing.
【０００９】この発明は前述した事情に鑑みて創案され
たもので、その目的は水平方向に加えて上下方向への振
動も減衰させることができ、上下方向へも免震効果を発
揮させることのできる三次元免震装置を提供することに
ある。The present invention has been made in view of the above-mentioned circumstances, and has as its object to attenuate not only horizontal vibrations but also vertical vibrations, and to exert a seismic isolation effect also in the vertical direction. An object of the present invention is to provide a three-dimensional seismic isolation device that can be used.
【００１０】[0010]
【課題を解決するための手段】この発明の三次元免震装
置によれば、免震装置のコンパクト化を図るために、従
来の鉛入り積層ゴム装置（水平方向免震が対象）に改良
を加えることとする。According to the three-dimensional seismic isolation device of the present invention, in order to reduce the size of the seismic isolation device, a conventional lead-containing laminated rubber device (for horizontal seismic isolation) is improved. It will be added.
【００１１】即ち、水平と同時に、上下にも有効な減衰
が得られるように、積層ゴム部に封入されている円柱形
状とした鉛コアは、その上下端部を、積層ゴム部を挟持
している上下フランジと楔状に緊結する。また、鉛コア
は、積層ゴム部の各ゴム板間に介在している挟みプレー
トと、この各挟みプレート間に設けられている補剛用の
小径プレートとで、その円柱形状が、上下方向の載荷に
よって過大な膨らみを生じないように押さえ付けられて
いる構成とする。That is, in order to obtain effective damping not only horizontally but also vertically, the cylindrical lead core sealed in the laminated rubber portion has its upper and lower ends sandwiched by the laminated rubber portion. Tighten with the upper and lower flanges in a wedge shape. In addition, the lead core has a sandwich plate interposed between the rubber plates of the laminated rubber portion, and a small-diameter plate for stiffening provided between the sandwich plates, and has a cylindrical shape in the vertical direction. It is configured to be pressed so as not to cause excessive bulging due to loading.
【００１２】詳述すると、従来の鉛入り積層ゴム装置
は、図６に示すように、積層ゴム部４の中心部に封入し
た円柱の鉛コア６が周囲の積層ゴム部４と一体にせん断
変形（水平変形）することにより、鉛コア６の超塑性特
性で水平方向の減衰が得られていた。More specifically, in the conventional lead-containing laminated rubber device, as shown in FIG. 6, a cylindrical lead core 6 enclosed in the center of the laminated rubber portion 4 is sheared integrally with the surrounding laminated rubber portion 4. By performing (horizontal deformation), damping in the horizontal direction was obtained by the superplastic characteristic of the lead core 6.
【００１３】そこで、本発明での円柱型の鉛コア６は、
図１に示すように、その上下端部を上下の両フランジ５
に楔状に緊結されると共に、各挟みプレートおよび小径
プレートとで押さえ付けられることによって、従来の水
平減衰性を維持したままに、鉛コア周囲と積層ゴムとの
接合効果から、上下方向の振動に対して、鉛コアが上下
方向に変形が与えられることになり、減衰を得ることが
できるようにする。なお、上下方向免震の場合、装置の
各ゴム層を厚くして、上下に軟らかくする必要がある
（４〜５Hz）。Therefore, the columnar lead core 6 according to the present invention comprises:
As shown in FIG.
Wedge-shaped, and pressed down by the sandwiching plate and small-diameter plate, while maintaining the conventional horizontal damping properties, the vertical joint vibrates due to the joint effect between the lead core and the laminated rubber. On the other hand, the lead core is deformed in the vertical direction, so that attenuation can be obtained. In the case of vertical seismic isolation, each rubber layer of the device needs to be thickened and softened vertically (4-5 Hz).
【００１４】[0014]
【実施例】以下、この発明の三次元免震装置を、図示す
る実施例によって説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a three-dimensional seismic isolation device according to the present invention.
【００１５】三次元免震装置１（図１参照）は、複数の
ゴム板２が挟みプレート３を介在して上下方向へ積み重
ねられている積層ゴム部４と、この積層ゴム部４を挟持
している上下の両フランジ5, 5を連結しており、積層ゴ
ム部４内を上下方向へ貫通した状態で少なくとも一本配
設されている鉛コア６とを備えてなっている。The three-dimensional seismic isolation device 1 (see FIG. 1) sandwiches a laminated rubber portion 4 in which a plurality of rubber plates 2 are vertically stacked with a sandwiching plate 3 interposed therebetween. The upper and lower flanges 5, 5 are connected to each other, and at least one lead core 6 is provided so as to penetrate the laminated rubber portion 4 in the vertical direction.
【００１６】そして、鉛コア６は、積層ゴム部４内を円
柱状に貫通しその上下両端部を両フランジ5, 5内におい
て楔状に緊結し、周囲に接する積層ゴム部４と一体に水
平方向や上下方向へ変形できるように構成されている。The lead core 6 penetrates the laminated rubber portion 4 in a cylindrical shape, and its upper and lower ends are tightly connected in a wedge shape in the two flanges 5, 5, so that the lead core 6 and the laminated rubber portion 4 which is in contact with the periphery are integrated in the horizontal direction. And can be deformed vertically.
【００１７】また、鉛コア６は、各挟みプレート３とこ
の各挟みプレート３の間に付加した挟みプレート３より
も小径の小径プレート７とで、その円柱形状が、上下方
向の載荷によって過大な膨らみを生じないように押さえ
付けられている。The lead core 6 is composed of each sandwiching plate 3 and a small-diameter plate 7 having a smaller diameter than the sandwiching plate 3 added between the sandwiching plates 3, and its columnar shape is excessively large due to a vertical load. It is pressed so as not to cause swelling.
【００１８】そして、このような構成からなるの鉛コア
６は、水平方向と共に、上下方向へも変形できるように
構成されている。The lead core 6 having such a configuration is configured to be deformable not only horizontally but also vertically.
【００１９】次に、以上のような構成の三次元免震装置
１を使用した時における、上下方向への振動の減衰状態
について述べと、この発明において、数値計算的な設計
方法が世の中に確立されていないので、今後の実施にあ
たっては、実験によって特性を調べ、設計方法を確立す
る必要がある。なお、図２〜図５に、予備的に実施した
鉛入り積層ゴム装置における上下方向加力試験データを
示す。これによると、減衰は17〜８％程度と思われる。Next, a description will be given of the state of vibration damping in the vertical direction when the three-dimensional seismic isolation device 1 having the above configuration is used. In the present invention, a numerical design method has been established in the world. In the future implementation, it is necessary to examine the characteristics by experiment and establish a design method. FIGS. 2 to 5 show vertical force test data of a lead-containing laminated rubber device that was preliminarily performed. According to this, the attenuation seems to be about 17-8%.
【００２０】[0020]
【発明の効果】この発明によれば、水平方向ならびに上
下方向の振動に対する減衰効果も有効な、所謂、三次元
免震装置が非常にシンプルな形状で提供できる。また、
免震装置として全ての機能が一体化されるので配置性が
良くなる。According to the present invention, a so-called three-dimensional seismic isolation device having an effective damping effect on horizontal and vertical vibrations can be provided in a very simple shape. Also,
Since all functions are integrated as a seismic isolation device, the arrangement is improved.
【００２１】さらに、環境気象条件に影響を受けない。
しかも、被支持構造物の、あらゆる方向の地震に対して
の合理的設計が可能となる。Furthermore, it is not affected by environmental weather conditions.
In addition, the supported structure can be reasonably designed for earthquakes in all directions.
【図１】(a) はこの発明の三次元免震装置を示す概略断
面図で、(b) は(a) のＡ−Ａ線矢視図である。1 (a) is a schematic sectional view showing a three-dimensional seismic isolation device of the present invention, and FIG. 1 (b) is a view taken on line AA of FIG. 1 (a).
【図２】鉛入り積層ゴム装置における上下方向加力試験
データを示すグラフである。FIG. 2 is a graph showing vertical force test data in a lead-containing laminated rubber device.
【図３】鉛入り積層ゴム装置における上下方向加力試験
データを示すグラフである。FIG. 3 is a graph showing vertical force test data in a lead-containing laminated rubber device.
【図４】鉛入り積層ゴム装置における上下方向加力試験
データを示すグラフである。FIG. 4 is a graph showing vertical force test data in a lead-containing laminated rubber device.
【図５】鉛入り積層ゴム装置における上下方向加力試験
データを示すグラフである。FIG. 5 is a graph showing vertical force test data in a lead-containing laminated rubber device.
【図６】従来の免震装置を示す概略図である。FIG. 6 is a schematic view showing a conventional seismic isolation device.
１…三次元免震装置、２…ゴム板、３…挟みプレート、
４…積層ゴム部、５…フランジ、６…鉛コア、７…小径
プレート。1 ... three-dimensional seismic isolation device, 2 ... rubber plate, 3 ... sandwich plate,
4 ... Laminated rubber part, 5 ... Flange, 6 ... Lead core, 7 ... Small diameter plate.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池永 雅良 神奈川県藤沢市桐原町８番地 オイレス 工業株式会社藤沢事業場内 (72)発明者 長谷川 治 神奈川県藤沢市桐原町８番地 オイレス 工業株式会社藤沢事業場内 (56)参考文献 特開 平３−204420（ＪＰ，Ａ) 実開 平３−26535（ＪＰ，Ｕ) 実開 昭63−184807（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) E04B 1/36 E04H 9/02 331 F16F 15/04 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayoshi Ikenaga 8 Kirihara-cho, Fujisawa-shi, Kanagawa Pref. Oiles Industry Co., Ltd. Fujisawa Plant (72) Inventor Osamu Hasegawa 8 Kirihara-cho, Fujisawa-shi Kanagawa Pref. (56) References JP-A-3-204420 (JP, A) JP-A-3-26535 (JP, U) JP-A-63-184807 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) E04B 1/36 E04H 9/02 331 F16F 15/04
Claims (1)
上下方向へ積み重ねられている積層ゴム部と、この積層
ゴム部を挟持している上下の両フランジを連結して、積
層ゴム部内を上下方向へ貫通した状態で少なくとも一本
配設されている鉛コアとからなる免震装置であり、 前記鉛コアは、前記積層ゴム部内を円柱状に貫通しその
上下両端部を前記フランジ内において楔状に緊結し、周
囲に接する積層ゴム部と一体に水平方向や上下方向へ変
形できるように構成されていると共に、 前記鉛コアは、前記各挟みプレートとこの各挟みプレー
トの間に付加した挟みプレートよりも小径の小径プレー
トとで、その円柱形状が、上下方向の載荷によって過大
な膨らみを生じないように押さえ付けられていることを
特徴とする三次元免震装置。1. A laminated rubber portion in which a plurality of rubber plates are vertically stacked with a sandwiching plate interposed therebetween, and upper and lower flanges sandwiching the laminated rubber portion are connected to each other to form an inside of the laminated rubber portion. A seismic isolation device comprising at least one lead core disposed in a vertically penetrating state, wherein the lead core penetrates the laminated rubber portion in a columnar shape, and the upper and lower ends of the lead core are disposed in the flange. It is configured so as to be able to be deformed in the horizontal direction or the vertical direction integrally with the laminated rubber portion which is in a wedge shape and is in contact with the surroundings, and the lead core is provided between each of the sandwich plates and each of the sandwiches added between the sandwich plates. A three-dimensional seismic isolation device characterized in that a small-diameter plate having a smaller diameter than the plate is pressed so that its cylindrical shape does not cause excessive bulging due to vertical loading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21238794A JP2951214B2 (en) | 1994-09-06 | 1994-09-06 | 3D seismic isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21238794A JP2951214B2 (en) | 1994-09-06 | 1994-09-06 | 3D seismic isolation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0882012A JPH0882012A (en) | 1996-03-26 |
| JP2951214B2 true JP2951214B2 (en) | 1999-09-20 |
Family
ID=16621745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21238794A Expired - Fee Related JP2951214B2 (en) | 1994-09-06 | 1994-09-06 | 3D seismic isolation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2951214B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU8248498A (en) * | 1997-07-11 | 1999-02-08 | Penguin Engineering Limited | Energy absorber |
| JP2001355677A (en) * | 2000-06-09 | 2001-12-26 | Oiles Ind Co Ltd | Laminated rubber supporting device containing lead plug |
| JP2001355676A (en) * | 2000-06-09 | 2001-12-26 | Oiles Ind Co Ltd | Laminated rubber supporting device containing lead plug |
| JP6354303B2 (en) * | 2014-05-08 | 2018-07-11 | オイレス工業株式会社 | Laminated rubber bearing device |
| JP6534863B2 (en) * | 2015-06-02 | 2019-06-26 | 株式会社フジタ | Laminated rubber bearing |
| CN110259238B (en) * | 2019-06-14 | 2020-12-04 | 太原理工大学 | In-cylinder flow deformation composite support damper with rigid sleeve sliding rod externally coated with lead body |
-
1994
- 1994-09-06 JP JP21238794A patent/JP2951214B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0882012A (en) | 1996-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4179104A (en) | Mechanical attenuator | |
| JP2951214B2 (en) | 3D seismic isolation device | |
| JP3389521B2 (en) | Vibration energy absorber for tension structure and its construction method | |
| KR0169706B1 (en) | Shakeproof bearing | |
| JPH01250547A (en) | Earthquake isolator | |
| JPS62228729A (en) | Vibration energy absorbing device | |
| JP3321934B2 (en) | Vibration isolation bearing | |
| JPS62220734A (en) | Vibrational energy absorbing device | |
| JP2007332643A (en) | Base isolated building | |
| JPH09317240A (en) | Elastic and plastic damper | |
| JPS59210166A (en) | Earthquake-proof apparatus | |
| JPH02104834A (en) | Response control device | |
| JP3028081B2 (en) | Dynamic rigid structure | |
| JP3463085B2 (en) | Seismic building | |
| JPH01247633A (en) | Damping mechanism for vibrationproof device | |
| JPH02154825A (en) | Vibration suppressor for structure | |
| JPS59217877A (en) | Earthquake-proof apparatus having attenuating mechanism | |
| JP3020089B2 (en) | Damping structure beam | |
| RU2539475C2 (en) | Earthquake-isolating support | |
| JPH0658008A (en) | Three-dimensional base isolation device | |
| JPH10317715A (en) | Base isolation mechanism | |
| JPH0542202Y2 (en) | ||
| JPH10238161A (en) | Base isolation rubber support structure | |
| JPS6334276B2 (en) | ||
| JPS63201277A (en) | Earthquakeproof multistoried building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990629 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080709 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090709 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100709 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110709 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120709 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120709 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130709 Year of fee payment: 14 |
|
| LAPS | Cancellation because of no payment of annual fees |