JPH0663379B2 - Seismic isolation device for structures - Google Patents
Seismic isolation device for structuresInfo
- Publication number
- JPH0663379B2 JPH0663379B2 JP25989386A JP25989386A JPH0663379B2 JP H0663379 B2 JPH0663379 B2 JP H0663379B2 JP 25989386 A JP25989386 A JP 25989386A JP 25989386 A JP25989386 A JP 25989386A JP H0663379 B2 JPH0663379 B2 JP H0663379B2
- Authority
- JP
- Japan
- Prior art keywords
- foundation
- elasto
- seismic isolation
- plastic 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.)
- Expired - Fee Related
Links
- 238000002955 isolation Methods 0.000 title claims description 17
- 239000004033 plastic Substances 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、建築物等の構造物と基礎（地盤も含む）と
の間に介装されて構造物に作用する振動を吸収する構造
物用免震装置に関する。The present invention relates to a structure which is interposed between a structure such as a building and a foundation (including the ground) and which absorbs vibration acting on the structure. For seismic isolation devices.
［従来の技術］ 積層ゴム支承で構造物を支持する免震構法においては、
地震発生時に構造物と基礎（地盤）との間に生じる大き
な水平変位を吸収するために当該変位を吸収する装置、
いわゆるダンパを該積層ゴム支承と併置させて用いられ
る。[Prior Art] In the seismic isolation method of supporting a structure with laminated rubber bearings,
A device that absorbs a large horizontal displacement between the structure and the foundation (ground) in the event of an earthquake,
A so-called damper is used together with the laminated rubber bearing.
この免震構法に用いられるダンパとしては従来より、粘
性体（油）の流動抵抗を利用したオイルダンパ、あるい
は、金属の弾塑性変形時のエネルギ吸収、すなわち履歴
減衰を利用したヒステレティックダンパなどがある。Conventionally, as the damper used in this seismic isolation method, an oil damper that uses the flow resistance of a viscous body (oil), or a hysteretic damper that uses energy absorption during elasto-plastic deformation of metal, that is, hysteresis damping is used. is there.
しかしながら、前者のオイルダンパは速度依存があるた
め地震のように長い周期の振動に対してはその効果が減
少し、また吸収能に方向性を有することから、任意の方
向に生じる地震に対して有効にエネルギを吸収するため
には複雑な取付け機構と複数のダンパを必要とするとい
う欠点がある。また後者のヒステレティックダンパにお
いて、金属として軟質金属を使用したものにおいては地
震エネルギの吸収能は増大されるものの、強風等の短周
期の振動が構造物に作用した場合、軟質金属が比較的小
さい外力に対しても弾塑性変形するため、構造物が予想
以上に揺れるなどの問題がある。更に、構造物が重量車
輌などの交通の激しい地域に建設される場合には、当該
車輌の交通により生じる縦振動を考慮に入れる必要があ
り、この縦振動を吸収する別途のダンパを設置する必要
を生じる。However, since the former oil damper has velocity dependence, its effect is diminished for long-period vibrations such as earthquakes, and since the absorption capacity has directionality, it can be used for earthquakes that occur in any direction. It has the disadvantage of requiring a complex mounting mechanism and multiple dampers to effectively absorb energy. In the latter hysteretic damper, when soft metal is used as the metal, seismic energy absorption capacity is increased, but when short-period vibration such as strong winds acts on the structure, the soft metal is relatively small. Since it also undergoes elasto-plastic deformation due to external force, there is a problem that the structure shakes more than expected. Furthermore, when a structure is constructed in a heavy traffic area such as a heavy vehicle, it is necessary to take into consideration the longitudinal vibration caused by the traffic of the vehicle, and it is necessary to install a separate damper to absorb this longitudinal vibration. Cause
［本発明の技術的課題］ 本発明は上記実情に鑑み、上記従来技術の有する問題を
解決すべくなされたものであって、金属の弾塑性変形に
よる地震エネルギの吸収能を有効に利用した構造物用免
震装置を提供することを目的とするものである。[Technical Problem of the Present Invention] In view of the above circumstances, the present invention has been made to solve the problems of the above-described conventional techniques, and is a structure that effectively utilizes the seismic energy absorption capacity due to elasto-plastic deformation of metal. The purpose is to provide a seismic isolation device for goods.
［本発明の技術的手段］ 本発明の構造物用免震装置は上記目的を達成するため、
次の技術的手段（構成）を採る。[Technical Means of the Present Invention] In order to achieve the above object, the seismic isolation device for a structure according to the present invention,
Take the following technical means (configuration).
すなわち、地盤側の基礎と該基礎上に積層ゴム支承を介
して支持される構造物側の基礎との間には、棒状の弾塑
性部材と該弾塑性部材の一端に結合され該一端を揺動自
在に支持する玉継手と該玉継手をその上下方向に移動可
能に支持するケーシングとからなるダンパが、該弾塑性
部材の他端を前記基礎のいずれか一方に固定し、前記ケ
ーシングを他方の基礎に固定して配置されてなることを
特徴とする。That is, between the foundation on the ground side and the foundation on the structure side supported by laminated rubber bearings on the foundation, a rod-shaped elasto-plastic member is coupled to one end of the elasto-plastic member and the one end is rocked. A damper composed of a ball joint that supports the ball joint and a casing that supports the ball joint so that the ball joint is movable in the vertical direction fixes the other end of the elastoplastic member to one of the foundations, and the casing is the other. It is characterized by being fixedly arranged on the foundation of.
上記構成において、棒状の弾塑性部材は所定の外力によ
り所定の弾性変形を経て塑性変形するものであり、鋼棒
その他の適宜の材料が使用される。該弾塑性部材はその
外周面が一様な円筒面もしくは一方の端部から他方の端
部にかけて漸次先細りとなる円錐面に形成されている。In the above structure, the rod-shaped elasto-plastic member is plastically deformed by a predetermined elastic force by a predetermined external force, and a steel rod or other appropriate material is used. The outer peripheral surface of the elasto-plastic member is formed into a uniform cylindrical surface or a conical surface which is gradually tapered from one end to the other end.
［作用］ 構造物に地震等の強力かつ急激な水平振動が作用する
と、この振動は構造物と基礎との間に配されたダンパに
伝達され、ダンパの棒状弾塑性部材の弾塑性変形抵抗に
より吸収される。[Operation] When a strong and sudden horizontal vibration such as an earthquake acts on the structure, this vibration is transmitted to the damper arranged between the structure and the foundation, and the elastic elasto-plastic deformation resistance of the rod-shaped elastic-plastic member of the damper causes the vibration. Be absorbed.
［効果］ 本発明の構造物用免震装置は、以下の特有の効果を有す
る。[Effect] The structure seismic isolation device of the present invention has the following unique effects.
地震等により構造物に作用する水平振動は構造物と基
礎との間に配置されたダンパを構成する棒状の弾塑性部
材の弾塑性変形抵抗力によって吸収される。この棒状弾
塑性部材は地震等の強度かつ急激な力に対して十分な吸
収力を発揮するものである。Horizontal vibration acting on the structure due to an earthquake or the like is absorbed by the elastic-plastic deformation resistance force of a rod-shaped elastic-plastic member that constitutes a damper arranged between the structure and the foundation. This rod-shaped elasto-plastic member exerts sufficient strength for a strong force such as an earthquake and abrupt force.
棒状の弾塑性部材として、その外周面が円錐面に形成
された弾塑性部材を使用したものは上記の効果に加え
て弾塑性部分が該部材の全長にわたって平均化されるの
で疲労強度、変形能力を高めることができる。A rod-shaped elasto-plastic member that uses an elasto-plastic member whose outer peripheral surface is formed into a conical surface has fatigue strength and deformability because the elasto-plastic portion is averaged over the entire length of the member in addition to the above effects. Can be increased.
［実施例］ 以下、本発明の実施例を図面に基づいて説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第１図及び第２図は本発明の構造物用免震装置の一実施
例を示す。図において、Ｇは建築物等の構造物側の基
礎、Ｂは地盤側の基礎である。1 and 2 show one embodiment of the seismic isolation device for structures according to the present invention. In the figure, G is a foundation on the side of a structure such as a building, and B is a foundation on the ground side.
本実施例の構造物用免震装置Ｈは構造物側の基礎Ｇと基
礎Ｂとの間に介装され、構造物Ｇに作用する振動を吸収
する機能を主体とするものであり、構造物Ｇの荷重を支
持する機能はない。The structure seismic isolation device H of the present embodiment is interposed between the structure-side foundation G and the structure B, and mainly has a function of absorbing vibration acting on the structure G. There is no function to support the G load.
構造物側の基礎Ｇにはその下面に固定された固定板１１
と該固定板１１の下面に固定された補強リブ１２と該補
強リブ１２に固定された取付け板１３とからなる結合固
定部１０が構成されている。該固定板１１は構造物Ｇに
埋設固定されたアンカーボルトにナットを螺合して固定
するなど適宜の方法で構造物Ｇに固定される。A fixing plate 11 fixed to the lower surface of the foundation G on the structure side
A connecting and fixing portion 10 is constituted by a reinforcing rib 12 fixed to the lower surface of the fixing plate 11 and a mounting plate 13 fixed to the reinforcing rib 12. The fixing plate 11 is fixed to the structure G by an appropriate method such as fixing an anchor bolt embedded and fixed in the structure G by screwing a nut.
棒状の弾塑性部材２０は外周面がその長さ方向にわたっ
て一様な円筒面に形成された鋼棒が使用され、その一端
が前記結合固定部１０の取付け板１３にナットによって
螺合固定されている。As the rod-shaped elasto-plastic member 20, a steel rod whose outer peripheral surface is formed into a uniform cylindrical surface over the length direction is used, and one end thereof is screwed and fixed to the mounting plate 13 of the coupling / fixing portion 10 by a nut. There is.
一端が該取付け板１３に螺合固定された弾塑性部材２０
の他端には拡径部２１が形成されており、該弾塑性部材
２０は該拡径部２１において玉継手３０に揺動自在に結
合されている。An elastic-plastic member 20 whose one end is screwed and fixed to the mounting plate 13.
A diametrically expanded portion 21 is formed at the other end, and the elasto-plastic member 20 is swingably coupled to the ball joint 30 at the diametrically expanded portion 21.
この継手３０は第２図に示すように、雄ねじ部３１を備
えたシャンク３２と、該シャンク３２に一体に形成され
た玉部３３と、凹部３４を有するハウジング３５と、該
玉部３３をハウジング３５の凹部３４内で抱持しかつ支
承する上部軸受３６及び下部軸受３７と、該下部軸受３
７の下面に配されたゴム弾性体３８と、該ハウジング３
５の開口部側に螺合固定されたロックナット３９とから
構成されている。そして、該シャンク３２の雄ねじ部３
１を前記弾塑性部材２０の下部に構成された雌ねじ部２
２に螺合固定することにより、該弾塑性部材２０は玉継
手３０によって揺動自在に結合される。As shown in FIG. 2, the joint 30 includes a shank 32 having a male screw portion 31, a ball portion 33 formed integrally with the shank 32, a housing 35 having a recess 34, and a ball portion 33. Upper bearing 36 and lower bearing 37, which are held and supported in the recess 34 of 35, and the lower bearing 3
7, a rubber elastic body 38 disposed on the lower surface of the housing 7, and the housing 3
5 and a lock nut 39 screwed and fixed to the opening side. Then, the male screw portion 3 of the shank 32
1 is a female screw portion 2 formed under the elasto-plastic member 20.
The elasto-plastic member 20 is swingably connected by a ball joint 30 by being screwed and fixed to 2.
地盤側の基礎Ｂには凹部４１を有するケーシング４０が
固定されており、該ケーシング４０の凹部４１内面には
上下方向に所定の間隔をもって軸受４２，４２が固定さ
れている。A casing 40 having a recess 41 is fixed to the foundation B on the ground side, and bearings 42, 42 are fixed to the inner surface of the recess 41 of the casing 40 at a predetermined interval in the vertical direction.
該ケーシング４０の凹部４１には前記玉継手３０が該継
手３０のハウジング３５外周面を該軸受４２，４２に支
承されてその上下方向に移動可能に案内されている。In the recess 41 of the casing 40, the ball joint 30 is supported on the outer peripheral surface of the housing 35 of the joint 30 by the bearings 42, 42 and is guided so as to be movable in the vertical direction.
第３図は本発明の構造物用免震装置の他の実施例を示
す。図において、先の実施例と同等の部材については同
一の符合が付されている。FIG. 3 shows another embodiment of the seismic isolation device for structures according to the present invention. In the figure, the same reference numerals are given to the same members as those in the previous embodiment.
本実施例は、棒状の弾塑性部材として、外周面が一端か
ら他端にかけて漸次先細りとなる円錐面に形成された弾
塑性部材２０′を使用した例である。The present embodiment is an example in which an elasto-plastic member 20 'whose outer peripheral surface is formed into a conical surface with a taper from one end to the other is used as the rod-shaped elasto-plastic member.
また、第４図は本発明の構造物用免震装置Ｈの配置態様
を代えた実施例を示す。FIG. 4 shows an embodiment in which the layout of the seismic isolation device H for structures of the present invention is changed.
すなわち、この実施例においては、棒状の弾塑性部材２
０の一端を地盤側の基礎Ｂに固定し、玉継手３０のハウ
ジング３５を上下方向自在に収容するケーシング４０を
構造物Ｇ側の基礎Ｇに固定した例を示すものである。That is, in this embodiment, the rod-shaped elasto-plastic member 2
In this example, one end of 0 is fixed to the foundation B on the ground side, and the casing 40 that houses the housing 35 of the ball joint 30 in the vertical direction is fixed to the foundation G on the structure G side.
【図面の簡単な説明】 図面は本発明の構造物用免震装置の実施例を示し、第１
図はその一実施例の縦断面図、第２図は玉継手を示す縦
断面図、第３図は他の実施例を示す縦断面図、第４図は
本発明の構造物用免震装置の配置態様を代えた実施例を
示す縦断面図である。 Ｈ…免震装置、Ｇ…構造物側基礎、Ｂ…基礎（地盤）、
２０，２０′…弾塑性部材、３０…玉継手、４０…ケー
シングBRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the seismic isolation device for structures according to the present invention.
FIG. 1 is a vertical sectional view of one embodiment thereof, FIG. 2 is a vertical sectional view showing a ball joint, FIG. 3 is a vertical sectional view showing another embodiment, and FIG. 4 is a seismic isolation device for a structure of the present invention. FIG. 6 is a vertical cross-sectional view showing an example in which the arrangement mode of FIG. H ... Seismic isolation device, G ... Structure side foundation, B ... Foundation (ground),
20, 20 '... Elasto-plastic member, 30 ... Ball joint, 40 ... Casing
───────────────────────────────────────────────────── フロントページの続き (72)発明者 荻野 伸行 千葉県浦安市北栄４−17−34 パークハイ ム北栄105 (72)発明者 松本 浩司 埼玉県上尾市原市2072−６ (72)発明者 多田 博 神奈川県横浜市南区永田山王台23−18 (72)発明者 伊関 治郎 東京都世田谷区砧８−31−３ (72)発明者 下田 郁夫 神奈川県藤沢市円行1449−４ (72)発明者 細野 幸弘 神奈川県座間市相模が丘６−４−７ (72)発明者 持丸 昌己 神奈川県大和市下和田970 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuyuki Ogino 4-17-34 Hokuei Kitasaka, Urayasu City, Chiba Prefecture 105 (72) Inventor Koji Matsumoto 2072-6 Hara City, Ageo City, Saitama Prefecture (72) Inventor Tada Hiroshi Nagata Sannodai, Minami-ku, Yokohama-shi, Kanagawa 23-18 (72) Inventor Jiro Iseki 8-31-3 Kinuta, Setagaya-ku, Tokyo (72) Inventor Ikuo Shimoda 1449-4 (72) Invention, Fujisawa-shi, Kanagawa Yukio Hosono 6-4-7 Sagamigaoka, Zama City, Kanagawa Prefecture (72) Inventor Masaki Mochimaru 970 Shimowada, Yamato City, Kanagawa Prefecture
Claims (3)
介して支持される構造物側の基礎との間には、棒状の弾
塑性部材と該弾塑性部材の一端に結合され該一端を揺動
自在に支持する玉継手と該玉継手をその上下方向に移動
可能に支持するケーシングとからなるダンパが、該弾塑
性部材の他端を前記基礎のいずれか一方に固定し、前記
ケーシングを他方の基礎に固定して配置されてなること
を特徴とする構造物用免震装置。1. A rod-shaped elasto-plastic member and one end of the elasto-plastic member connected between the foundation on the ground side and the foundation on the structure side supported by a laminated rubber bearing on the foundation. A damper consisting of a ball joint that swingably supports one end and a casing that supports the ball joint so as to be movable in the vertical direction, fixes the other end of the elastoplastic member to one of the foundations, and A seismic isolation device for a structure, characterized in that the casing is fixedly arranged on the other foundation.
筒面に形成されていることを特徴とする特許請求の範囲
第１項に記載の構造物用免震装置。2. A seismic isolation device for a structure according to claim 1, wherein the rod-shaped elasto-plastic member has an outer peripheral surface formed into a uniform cylindrical surface.
部から他端の端部にけて漸次先細りとなる円錐面に形成
されていることを特徴とする特許請求の範囲第１項に記
載の構造物用免震装置。3. The rod-shaped elasto-plastic member has an outer peripheral surface formed into a conical surface which gradually tapers from one end to the other end. The seismic isolation device for structures according to paragraph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25989386A JPH0663379B2 (en) | 1986-10-31 | 1986-10-31 | Seismic isolation device for structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25989386A JPH0663379B2 (en) | 1986-10-31 | 1986-10-31 | Seismic isolation device for structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63114784A JPS63114784A (en) | 1988-05-19 |
| JPH0663379B2 true JPH0663379B2 (en) | 1994-08-22 |
Family
ID=17340401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25989386A Expired - Fee Related JPH0663379B2 (en) | 1986-10-31 | 1986-10-31 | Seismic isolation device for structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0663379B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2673192B2 (en) * | 1989-12-13 | 1997-11-05 | 日本原子力発電株式会社 | Seismic isolation device |
-
1986
- 1986-10-31 JP JP25989386A patent/JPH0663379B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63114784A (en) | 1988-05-19 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |