JP2001115684A - Base isolation structure - Google Patents
Base isolation structureInfo
- Publication number
- JP2001115684A JP2001115684A JP29872599A JP29872599A JP2001115684A JP 2001115684 A JP2001115684 A JP 2001115684A JP 29872599 A JP29872599 A JP 29872599A JP 29872599 A JP29872599 A JP 29872599A JP 2001115684 A JP2001115684 A JP 2001115684A
- Authority
- JP
- Japan
- Prior art keywords
- column
- foundation
- seismic isolation
- stopper
- 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.)
- Pending
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、アスペクト比が
大きい建物に多く見られる、地震時に発生する浮き上が
りを許容して地震力を低減し、転倒、落下衝撃に対する
安全性を確保する免震構造物の技術分野に属する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation structure, which is often found in buildings having a large aspect ratio and reduces seismic force by allowing uplift occurring during an earthquake to reduce the seismic force and ensure safety against falling and falling impact. Belongs to the technical field.
【０００２】[0002]
【従来の技術】従来一般の免震建物１’は、図１Ａのよ
うに、免震層において水平方向に大きく変位することを
許容する考えに立脚している。しかし、建物の高さと幅
の比（アスペクト比）が大きい免震建物１は、図１Ｂに
例示したように、上下方向の変位を含むロッキング振動
が支配的となり、免震装置２に大きな引張り軸力が作用
する。そのため前記した大きい引張り軸力に耐える免震
装置及び基礎が必要とされている。2. Description of the Related Art As shown in FIG. 1A, a conventional general seismic isolation building 1 'is based on the idea of allowing a large horizontal displacement in a seismic isolation layer. However, in the base-isolated building 1 having a large height-width ratio (aspect ratio) of the building, rocking vibration including vertical displacement becomes dominant as illustrated in FIG. Force acts. Therefore, there is a need for a seismic isolation device and a foundation that can withstand the large tensile axial force described above.
【０００３】従来、地震時に発生する浮き上がりを許容
し、構造物の転倒、落下衝撃に対する安全性を確保し、
同構造物に作用する地震力を低減させる免震構造物が、
例えば特開平１０−１９５８９０号公報、及び本出願人
の特願平１１−４２７５９号明細書及び図面に提案され
ている。[0003] Conventionally, lifting that occurs during an earthquake is allowed, and safety against falling or falling impact of a structure is secured.
A seismic isolation structure that reduces the seismic force acting on the structure
For example, it is proposed in Japanese Patent Application Laid-Open No. Hei 10-195890 and Japanese Patent Application No. 11-42759 and drawings of the present applicant.
【０００４】[0004]
【本発明が解決しようとする課題】しかしながら、建物
と基礎の縁が切られて、地震時に大きな「浮き上がり」
を生ずる場合に、大きな引張り軸力に耐え、浮き上がり
量の制御が行われ、更に建物の落下衝撃に対する緩衝対
策まで備えて安全な免震構造は未だ見聞しない。[Problems to be Solved by the Invention] However, the edge of the building and the foundation are cut, and a large "lift" occurs during an earthquake.
In the case of the occurrence of, the seismic isolation structure that withstands a large tensile axial force, controls the amount of uplift, and provides a measure for buffering against a drop impact of the building has not yet been seen.
【０００５】本発明の目的は、地震時に構造物に発生す
る浮き上がりを許容することによって地震力の低減を図
り、しかも浮き上がり量を制御して転倒の防止を図り、
更に構造物の落下衝撃を十分緩衝することによって安全
性を確保できるように改良した免震構造物を提供するこ
とである。[0005] It is an object of the present invention to reduce seismic force by allowing uplift generated in a structure during an earthquake, and to control the amount of uplift to prevent a fall.
It is another object of the present invention to provide an improved seismic isolation structure capable of ensuring safety by sufficiently absorbing a drop impact of the structure.
【０００６】[0006]
【課題を解決するための手段】上述の課題を解決するた
めの手段として、請求項１に記載した発明に係る免震構
造物は、地震時に発生する浮き上がりを許容して地震力
を低減させ、構造物の転倒、落下衝撃に対する安全性を
確保する免震構造物において、構造物の柱における中間
階または最下階部分の柱下部と、その下の柱または基礎
との縁が切られて浮き上がり境界面が形成され、前記下
の柱または基礎の上に、それらと一体化した免震装置が
設置されていること、前記免震装置は、中心部に鋼棒を
通して立ち上がらせた積層ゴムからなり、鋼棒の上端に
鉛直方向のストッパが設けられていること、前記構造物
の柱における１階または地下階部分の柱下部は、前記免
震装置の積層ゴムにより長期軸力を支持され、水平剪断
力に対して鋼棒が抵抗し、浮き上がり量をストッパが制
御する構成で下の柱または基礎と結合されており、前記
ストッパの下側空間に浮き上がり時の減衰材が充填され
ていること、をそれぞれ特徴とする。As a means for solving the above-mentioned problems, the seismic isolation structure according to the first aspect of the present invention reduces seismic force by allowing uplift occurring during an earthquake, In seismic isolation structures that ensure safety against falling or falling impact of structures, the lower part of the middle floor or the lowest floor of the pillars of the structure and the lower pillar or foundation are cut off from the edge and lifted up A boundary surface is formed, and the seismic isolation device integrated with them is installed on the lower pillar or foundation, and the seismic isolation device is made of laminated rubber raised through a steel rod in the center. A vertical stopper is provided at the upper end of the steel rod, and the lower part of the first floor or basement floor of the column of the structure is supported by the laminated rubber of the seismic isolation device for a long term axial force. Steel bar against shear force Against, is coupled with the pillar or foundation below the amount floating configuration in which the stopper is controlled, the attenuation material when lifting the lower space of the stopper is filled, and wherein, respectively.
【０００７】[0007]
【発明の実施の形態】請求項１に記載した発明に係る免
震構造物の実施形態を、図２に示す。本発明に係る免震
構造物は、図１Ｂに例示した建物と同様にロッキング振
動する構造物との柱とその下の柱又は基礎との縁が切ら
れて「浮き上がり境界面」が形成され、構造物は免震装
置で支持されており、地震時に発生する構造物の浮き上
がり（ロッキング振動）を許容して地震力を低減させ、
同構造物の転倒、落下衝撃に対する安全性を確保する免
震構造物として好適に実施される。FIG. 2 shows an embodiment of the seismic isolation structure according to the first aspect of the present invention. In the seismic isolation structure according to the present invention, as in the building exemplified in FIG. 1B, the edge of the pillar with the structure that vibrates rocking and the pillar or foundation below it is cut off to form a “lifting boundary surface”, The structures are supported by seismic isolation devices, which reduce the seismic force by allowing the structures to rise (rocking vibration) generated during an earthquake,
It is suitably implemented as a seismic isolation structure that ensures safety against falling and impact of the structure.
【０００８】図２に示すように、構造物の柱５における
中間階または最下階部分の柱下部と、その下の柱または
基礎６との縁が切られて、両者の間に浮き上がり境界面
としてクリアランスＣが形成されている。そして、前記
下の柱または基礎６の上に、それらと一体化した免震装
置７が前記クリアランスＣを上下方向に貫通して立ち上
がるように設置され、この免震装置７を介して上の柱５
との結合が行われている。つまり、基礎６の上に免震装
置７を設置した後、更にその上に鉄筋コンクリート造の
柱５を構築した構成とされている。As shown in FIG. 2, the edge of the pillar lower part of the middle floor or the lowest floor of the pillar 5 of the structure and the pillar or foundation 6 thereunder are cut off, and the boundary is lifted up between them. , A clearance C is formed. A seismic isolation device 7 integrated therewith is installed on the lower pillar or foundation 6 so as to stand up through the clearance C in the vertical direction. 5
And binding has been done. That is, after the seismic isolation device 7 is installed on the foundation 6, the reinforced concrete columns 5 are further constructed thereon.
【０００９】前記免震装置７は、鉄板とゴムシートを交
互に積み重ねて成る積層ゴム８の中心部に鋼棒９を通し
て立ち上がらせた構成であり、鋼棒９の上端に水平方向
のストッパ１０が設けられている。積層ゴム８の下面の
鋼板が鉄筋コンクリート造の基礎６へアンカー１１で固
定されている。The seismic isolation device 7 has a configuration in which a steel bar 9 is raised through the center of a laminated rubber 8 formed by alternately stacking iron plates and rubber sheets, and a horizontal stopper 10 is provided at the upper end of the steel bar 9. Is provided. The steel plate on the lower surface of the laminated rubber 8 is fixed to the reinforced concrete foundation 6 with the anchor 11.
【００１０】前記構造物の柱５も鉄筋コンクリート造で
あり、前記鋼棒９の軸部および上端のストッパー１０と
はアンボンド処理１２によって絶縁されている。鋼棒９
と積層ゴム（鉄板及びゴムシート）との間も縁が切られ
ている。ストッパー１０の下面側には、柱５の浮き上が
りを許容する大きさの空間が形成され、同空間内に柱５
の浮き上がり時に減衰性能を発揮する発泡ポリスチレン
ボード等の減衰材１３が充填されている。The column 5 of the structure is also made of reinforced concrete, and is insulated from the shaft of the steel rod 9 and the stopper 10 at the upper end by an unbonding process 12. Steel bar 9
An edge is also cut between the metal and the laminated rubber (iron plate and rubber sheet). On the lower surface side of the stopper 10, a space large enough to allow the pillar 5 to float is formed.
Is filled with an attenuating material 13 such as a foamed polystyrene board that exhibits an attenuating performance when floating.
【００１１】従って、構造物の柱５における中間階また
は最下階部分の柱下部は、前記免震装置７の積層ゴム８
により長期軸力を支持される。よって、積層ゴム８の平
面形状と大きさは、前記の支持を考慮して適切に設計さ
れる。Therefore, the lower part of the middle floor or the lowest floor of the pillar 5 of the structure is connected to the laminated rubber 8 of the seismic isolation device 7.
Supports long-term axial force. Therefore, the planar shape and the size of the laminated rubber 8 are appropriately designed in consideration of the above support.
【００１２】柱５に作用する水平剪断力に対しては鋼棒
９が抵抗する。そして、柱５に浮き上がりが発生した場
合には、減衰材１３が減衰性能を発揮しつつ圧縮され
て、エネルギー吸収が行われる。更に、ストッパ１０が
浮き上がり量を一定の大きさに制御して過大な浮き上が
りと転倒を防止する。浮き上がった後の落下に対して
は、積層ゴム８が衝撃を緩和する働きをする。The steel bar 9 resists horizontal shear forces acting on the column 5. When the column 5 is lifted, the damping material 13 is compressed while exhibiting the damping performance, and energy is absorbed. Further, the stopper 10 controls the amount of lifting to a fixed size to prevent excessive lifting and falling. The laminated rubber 8 functions to reduce the impact against the falling after the floating.
【００１３】[0013]
【本発明が奏する効果】請求項１に記載した発明に係る
免震構造物は、地震時に構造物に発生する浮き上がりを
許容することによって地震力の低減を図り、浮き上がり
量を制御して転倒の防止を図る。しかも構造物の落下衝
撃を十分緩衝することによって安全性を確保するのであ
る。The seismic isolation structure according to the first aspect of the present invention reduces seismic force by allowing the structure to be lifted when an earthquake occurs, and controls the amount of lift to prevent falling. To prevent it. Moreover, safety is ensured by sufficiently damping the impact of the falling structure.
【図１】Ａは従来の、Ｂは本発明に係る免震構造物の原
理説明図である。FIG. 1A is a diagram illustrating the principle of a conventional structure, and FIG. 1B is a diagram illustrating the principle of a seismic isolation structure according to the present invention.
【図２】本発明の実施形態を示した断面図である。FIG. 2 is a sectional view showing an embodiment of the present invention.
５ 構造物の柱 ６ 下の柱または基礎 ７ 免震装置 ８ 積層ゴム ９ 鋼棒 １０ ストッパ Ｃ クリアランス 5 Structure pillar 6 Lower pillar or foundation 7 Seismic isolation device 8 Laminated rubber 9 Steel rod 10 Stopper C Clearance
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 秀樹 千葉県印西市大塚一丁目５番地１ 株式会 社竹中工務店技術研究所内 (72)発明者 荘 大作 千葉県印西市大塚一丁目５番地１ 株式会 社竹中工務店技術研究所内 (72)発明者 木谷 宗一 東京都中央区銀座八丁目21番１号 株式会 社竹中工務店東京本店内 (72)発明者 相模 友行 東京都中央区銀座八丁目21番１号 株式会 社竹中工務店東京本店内 (72)発明者 結城 大作 東京都中央区銀座八丁目21番１号 株式会 社竹中工務店東京本店内 Ｆターム(参考） 3J048 AA01 AB01 AC01 BA08 BB03 BC08 DA03 EA38 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Kimura 1-5-1, Otsuka, Inzai City, Chiba Prefecture Inside the Technical Research Center, Takenaka Corporation (72) Inventor Daisaku 1-5-1, Otsuka, Inzai City, Chiba Prefecture Inside Takenaka Corporation Technical Research Institute (72) Inventor Soichi Kitani 8-21-1, Ginza, Chuo-ku, Tokyo Inside Tokyo Main Office Takenaka Corporation (72) Inventor Tomoyuki Sagami Ginza, Chuo-ku, Tokyo No. 8-21-1, Takenaka Corporation Tokyo Main Store (72) Inventor Daisaku Yuki 8-21-1, Ginza, Chuo-ku, Tokyo F-Terminator Tokyo Main Store F-term (reference) 3J048 AA01 AB01 AC01 BA08 BB03 BC08 DA03 EA38
Claims (1)
震力を低減させ、構造物の転倒、落下衝撃に対する安全
性を確保する免震構造物において、 構造物の柱における中間階または最下階部分の柱下部
と、その下の柱または基礎との縁が切られて浮き上がり
境界面が形成され、前記下の柱または基礎の上に、それ
らと一体化した免震装置が設置されていること、 前記免震装置は、中心部に鋼棒を通して立ち上がらせた
積層ゴムからなり、鋼棒の上端に鉛直方向のストッパが
設けられていること、 前記構造物の柱における１階または地下階部分の柱下部
は、前記免震装置の積層ゴムにより長期軸力を支持さ
れ、水平剪断力に対して鋼棒が抵抗し、浮き上がり量を
ストッパが制御する構成で下の柱または基礎と結合され
ており、前記ストッパの下側空間に浮き上がり時の減衰
材が充填されていること、をそれぞれ特徴とする免震構
造物。Claims: 1. A seismic isolation structure that reduces the seismic force by allowing uplift that occurs during an earthquake and secures safety against overturning and falling impact of the structure, wherein the middle floor or the lowest floor of the pillar of the structure is provided. The lower part of the pillar and the lower pillar or foundation are cut off to form a rising boundary surface, and the seismic isolation device integrated with them is installed on the lower pillar or foundation. The seismic isolation device is made of laminated rubber that stands up through a steel rod in the center, and a vertical stopper is provided at the upper end of the steel rod. The lower part of the column is connected to the lower column or foundation in a configuration in which the long-term axial force is supported by the laminated rubber of the seismic isolation device, the steel bar resists the horizontal shearing force, and the amount of lift is controlled by the stopper. Of the stopper The damping member when lifting the side space is filled, a seismic isolation structure, wherein, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29872599A JP2001115684A (en) | 1999-10-20 | 1999-10-20 | Base isolation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29872599A JP2001115684A (en) | 1999-10-20 | 1999-10-20 | Base isolation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001115684A true JP2001115684A (en) | 2001-04-24 |
Family
ID=17863478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29872599A Pending JP2001115684A (en) | 1999-10-20 | 1999-10-20 | Base isolation structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001115684A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008069511A (en) * | 2006-09-12 | 2008-03-27 | Junko Seimitsu Kotei Jigyo Kofun Yugenkoshi | Aseismatic structure of building |
| JP2012077599A (en) * | 2011-03-29 | 2012-04-19 | Ihi Infrastructure Systems Co Ltd | Bearing device |
| JP2012202081A (en) * | 2011-03-24 | 2012-10-22 | Takenaka Komuten Co Ltd | Seismic control structure |
| CN103806534A (en) * | 2012-11-06 | 2014-05-21 | 沈阳建筑大学 | Drum-shaped multilayer friction plate self-reset slipping and shock-insulating support |
| JP2016223221A (en) * | 2015-06-02 | 2016-12-28 | 株式会社フジタ | Mounting structure of base isolation device |
-
1999
- 1999-10-20 JP JP29872599A patent/JP2001115684A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008069511A (en) * | 2006-09-12 | 2008-03-27 | Junko Seimitsu Kotei Jigyo Kofun Yugenkoshi | Aseismatic structure of building |
| JP2012202081A (en) * | 2011-03-24 | 2012-10-22 | Takenaka Komuten Co Ltd | Seismic control structure |
| JP2012077599A (en) * | 2011-03-29 | 2012-04-19 | Ihi Infrastructure Systems Co Ltd | Bearing device |
| CN103806534A (en) * | 2012-11-06 | 2014-05-21 | 沈阳建筑大学 | Drum-shaped multilayer friction plate self-reset slipping and shock-insulating support |
| JP2016223221A (en) * | 2015-06-02 | 2016-12-28 | 株式会社フジタ | Mounting structure of base isolation device |
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