JPH01203542A - Bearing of earthquake resisting building - Google Patents
Bearing of earthquake resisting buildingInfo
- Publication number
- JPH01203542A JPH01203542A JP2654488A JP2654488A JPH01203542A JP H01203542 A JPH01203542 A JP H01203542A JP 2654488 A JP2654488 A JP 2654488A JP 2654488 A JP2654488 A JP 2654488A JP H01203542 A JPH01203542 A JP H01203542A
- Authority
- JP
- Japan
- Prior art keywords
- deformation
- laminated rubber
- sliding
- building
- bearing
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000576 Laminated steel Inorganic materials 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000003831 antifriction material Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 235000010842 Sarcandra glabra Nutrition 0.000 description 1
- 240000004274 Sarcandra glabra Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は免震構造物における支承に係るものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a support in a seismic isolation structure.
（従来の技術）
免震構造物における支承としては、構造物と基盤との間
に′、鋼板とゴムとを交互に積層してなる積層ゴム材を
介装させた積層ゴム支承、底面に減摩材を具えたすべり
材を介装させたすべり支承、或いはまたすべり材上に積
層ゴム材を一体に重層接着してなる支承を介装させた複
合すべり支承が採用されている。(Prior technology) Supports for seismic isolation structures include laminated rubber bearings in which a laminated rubber material made of alternately laminated steel plates and rubber is interposed between the structure and the foundation; Sliding bearings in which a sliding member with a friction material is interposed, or composite sliding bearings in which a bearing formed by laminated rubber materials bonded together on a sliding member are used.
（発明が解決しようとする課題）
前記積層ゴム支承は、鉛直方向に高い剛性を有するが、
水平方向の剛性は低く、同水平方向の弾性変形によって
構造物の固有周期を長周期化することによって免震効果
を発揮するものであるが、共振を生起するような外乱に
対しては支承本体に大変形を生じ、破損に至る危険性を
包蔵している。(Problem to be Solved by the Invention) The laminated rubber bearing has high rigidity in the vertical direction, but
The rigidity in the horizontal direction is low, and the structure exhibits a seismic isolation effect by increasing the natural period of the structure through elastic deformation in the same horizontal direction. There is a danger that this may cause large deformation and damage.
またすペリ支承は滑動すれば地震入力が頭打ちとなり、
免震効果が発揮されるが、滑動前は非免震の状態にある
。Also, if the periphery bearing slides, the earthquake input will reach a ceiling.
Although it exhibits a seismic isolation effect, it is in a non-seismic isolation state before sliding.
更にまた複合すべり支承は積層ゴム支承と、すべり支承
との特性を兼ね備えた支承であり、滑動以前は積層ゴム
の弾性変形によって免震効果が発揮されるが、ある程度
以上の水平力が作用すると滑動を生じ、構造物に対する
地震入力が頭打ちとなる。このとき、積層ゴム材の変形
は通常の積層ゴム支承の場合はど大きくなることはない
が、その変形量は特に制御されておらず、摩擦力と積層
ゴム材の水平剛性とからその最大値がきまる。Furthermore, composite sliding bearings have the characteristics of laminated rubber bearings and sliding bearings, and before sliding, the seismic isolation effect is exerted by the elastic deformation of the laminated rubber, but when a horizontal force above a certain level is applied, sliding occurs. , and the seismic input to the structure reaches a ceiling. At this time, the deformation of the laminated rubber material will not become large in the case of ordinary laminated rubber bearings, but the amount of deformation is not particularly controlled, and its maximum value is determined by the frictional force and the horizontal rigidity of the laminated rubber material. The decision will be made.
即ち積層ゴム材の水平剛性が低い場合には過大な変形と
なることもありうる。That is, if the horizontal rigidity of the laminated rubber material is low, excessive deformation may occur.
本発明はこのような従来技術の有する問題点に鑑みて提
案されたもので、その目的とする処は、積層ゴムの剪断
変形を拘束し、作用する地震力が。The present invention was proposed in view of the problems of the prior art, and its purpose is to restrain the shear deformation of laminated rubber and prevent the acting seismic force.
増大しても共振現象を防止し、有効な免震効果が得られ
る免震構造物における支承を提供する点にある。The object of the present invention is to provide a support in a seismic isolation structure that prevents resonance phenomena even when the vibration increases and provides an effective seismic isolation effect.
（課題を解決するための手段）
前記目的を達成するため、本発明に係る免震構造物にお
ける支承は、すべり材上に積層ゴム部材を一体に接着し
てなる複合すべり支承を、構造物と基礎上のすべり板と
の間に介装するとともに、同構造物における前記複合す
べり支承の外周に、前記積層ゴム部材の一定限度以上の
変形を抑制する変形制限部材を配設して構成されている
。(Means for Solving the Problems) In order to achieve the above object, the support in the seismic isolation structure according to the present invention includes a composite sliding bearing formed by integrally bonding a laminated rubber member on a sliding member, as a structure. A deformation limiting member is interposed between the sliding plate on the foundation and the outer periphery of the composite sliding bearing in the same structure to suppress deformation of the laminated rubber member beyond a certain limit. There is.
（作用）
本発明は前記したように構成されているので、地震時に
支承部分に剪断力が作用したとき、同剪断力がすべり材
の摩擦係数に相当する弾性限界剪断力以下であれば滑動
は生起せず、積層ゴム部材部分が剪断変形をする。(Function) Since the present invention is configured as described above, when a shearing force is applied to the bearing part during an earthquake, if the shearing force is less than the elastic limit shearing force corresponding to the friction coefficient of the sliding material, sliding will not occur. This does not occur, and the laminated rubber member portion undergoes shear deformation.
この剪断変形が前記変形制服部材によって予め設定され
た限界変形内であれば、積層ゴム部材は変形制限部材に
よって拘束を受けることなく自由に変形し、構造物に所
定の固有周期を賦与することになり、免震効果が得られ
る。If this shear deformation is within the deformation limit preset by the deformable uniform member, the laminated rubber member will deform freely without being restrained by the deformation limiting member, imparting a predetermined natural period to the structure. Therefore, a seismic isolation effect can be obtained.
前記積層ゴム部材の剪断変形が大きくなり、前記変形制
限部材で設定された限界変形に達すると同部材が働き、
すべり材が滑動するため、積層ゴム材はそれ以上の変形
をすることがない。従って同積層ゴム部材が破断するこ
とがなく、上部構造を安全に支持することができる。When the shear deformation of the laminated rubber member increases and reaches a limit deformation set by the deformation limiting member, the member acts;
Since the sliding material slides, the laminated rubber material does not deform any further. Therefore, the laminated rubber member does not break and can safely support the upper structure.
なお前記変形制限部材が働くと、上部構造に作用する地
震入力は増加するが、その力がすべり材の摩擦力に等し
くなると、同すべり材の滑動を生じ、地震入力が頭打ち
となり、免震効果が得られる。When the deformation limiting member acts, the seismic input acting on the superstructure increases, but when that force becomes equal to the frictional force of the sliding material, the sliding material will slide, the seismic input will reach a plateau, and the seismic isolation effect will be reduced. is obtained.
（実施例） 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.
（Ａ）は免震構造物における被免震部分を構成する上部
構造躯体の柱脚、（Ｂ）は基礎（Ｃ）上に設置された、
表面仕上げをしたステンレス鋼板また四弗化エチレン樹
脂等の減摩材を貼着した鋼材より構成されたすべり板で
ある。(A) is the column base of the superstructure frame that constitutes the seismically isolated part of the seismically isolated structure, (B) is the column base installed on the foundation (C),
It is a sliding plate made of a stainless steel plate with a surface finish or a steel material to which an anti-friction material such as tetrafluoroethylene resin is attached.
前記柱脚（Ａ）の下面には、鋼板（ｌａ）または積層ゴ
ム（２）の下底面に四弗化エチレン等の減摩材（１ｂ）
を層着してなるすべり材（１）上に、鋼板とゴムとを交
互に積層した積層ゴム部材（２）を一体に重合接着して
なる複合すべり支承が取付けられ、同支承におけるすべ
り材（１）が前記すべり板（Ｂ）上に滑動可能に支持さ
れる。On the bottom surface of the column base (A), an anti-friction material (1b) such as tetrafluoroethylene is placed on the bottom surface of the steel plate (la) or the laminated rubber (2).
A composite sliding bearing is installed on a sliding material (1) formed by layering a laminated rubber member (2) made of alternately laminated steel plates and rubber, which is polymerized and bonded together. 1) is slidably supported on the sliding plate (B).
また前記柱脚（Ａ）の下面における複合すべり支承の外
周部に、積層ゴム部材（２）の一定限度以上の剪断変形
を制限する鋼製の変形制限部材（３）が垂設され、同各
部材（３）の下端部における、積層ゴム部材（２）が剪
断変形時に接触する部分に、硬質プロロプレンゴム等の
緩衝材（４）が配設され、先端部が前記積層ゴム部材（
２）に接着剤で接着され前記両部材の接触時の衝撃を緩
和するように構成されている。In addition, a steel deformation limiting member (3) for limiting shear deformation of the laminated rubber member (2) beyond a certain limit is vertically installed on the outer periphery of the composite sliding bearing on the lower surface of the column base (A). A cushioning material (4) such as hard propoprene rubber is disposed at the lower end of the member (3) where the laminated rubber member (2) comes into contact during shear deformation, and the tip end is connected to the laminated rubber member (2).
2) is bonded with an adhesive so as to reduce the impact when the two members come into contact with each other.
図示の実施例は前記したように構成されているので、地
震時に積層ゴム部材（２）が剪断変形を生起した場合、
第２図に示すようにこの変形が前記変形制限部材（３）
によって予め設定された限界変形以内であれば゛、積層
ゴム部材（２）は自由に変形し、所定の固有周期を構造
物に賦与することによって免震効果が得られる。Since the illustrated embodiment is configured as described above, if the laminated rubber member (2) undergoes shear deformation during an earthquake,
As shown in FIG. 2, this deformation is caused by the deformation limiting member (3).
If the deformation is within the limit deformation preset by , the laminated rubber member (2) deforms freely, and by imparting a predetermined natural period to the structure, a seismic isolation effect can be obtained.
而して前記積層ゴム部材（２）の剪断変形が増大し、前
記変形制限部材（３）によって設定された限界変形に達
すると、第３図に示すように変形制限部材（３）が働き
、積層ゴム部材（２）はそれ以上の変形をすることがな
（、二の結果、積層ゴム部材（２）が破断することがな
く、上部構造物を安全に支持することができる。When the shear deformation of the laminated rubber member (2) increases and reaches the limit deformation set by the deformation limiting member (3), the deformation limiting member (3) acts as shown in FIG. The laminated rubber member (2) does not deform any further (as a result, the laminated rubber member (2) does not break, and can safely support the upper structure.
なお前記したように変形制限部材（３）が働くと、上部
構造物に作用する地震力が増加するが、同地震力がすべ
り材（１）の摩擦力に等しくなると同すべり材（１）の
滑動を生起し、構造物に対する地震入力が頭打ちとなり
、免震効果が得られる。As mentioned above, when the deformation limiting member (3) acts, the seismic force acting on the superstructure increases, but when the seismic force becomes equal to the frictional force of the sliding member (1), the sliding member (1) increases. Sliding occurs, the seismic input to the structure reaches a ceiling, and a seismic isolation effect is obtained.
このようにすべり材（１）が滑動することによって構造
物に共振が生起することがな（、有効な免震効果が発揮
される。As the sliding member (1) slides in this manner, resonance does not occur in the structure (and an effective seismic isolation effect is exhibited).
第４図は前記支承の力学特性を示し、晶及び石は積層ゴ
ム部材（２）部分の変形を示し、正、２は緩衝部材（４
）部分の変形を示し、反はすべり材（１）部分のすべり
を示す。Figure 4 shows the mechanical characteristics of the bearing, crystals and stones indicate deformation of the laminated rubber member (2), positive, 2 indicates the buffer member (4).
) indicates the deformation of the part, and the reverse indicates the slippage of the sliding material (1) part.
第５図は本発明の他の実施例を示し、積層ゴム部材（２
）と変形制限部材（３）との間の空隙に発泡スチレンラ
バーの如き高城性ゴムまたは高粘性シリコン材よりなる
充填材（５）を填装し、蛇腹のキャンパスシートまたは
ゴム材よりなる弾性シーリング材（６）で封入し、積層
ゴム部材（２）が変形すると充填材（５）も同時に変形
または流動することによって、振動減衰効果を得ること
ができる。FIG. 5 shows another embodiment of the present invention, in which a laminated rubber member (2
) and the deformation limiting member (3) is filled with a filler (5) made of a high-strength rubber such as foamed styrene rubber or a highly viscous silicone material, and an elastic sealing material made of a bellows canvas sheet or a rubber material is filled. When the laminated rubber member (2) is deformed, the filler (5) also deforms or flows at the same time, thereby providing a vibration damping effect.
なお第６図及び第７図は前記実施例の部分横断平面図を
示し、第６図では円筒型の、第７図では角筒型の変形制
限部材が使用されている。Note that FIGS. 6 and 7 show partial cross-sectional plan views of the embodiment, in which a cylindrical deformation limiting member is used in FIG. 6, and a rectangular cylindrical deformation limiting member is used in FIG.
図中、前記実施例と均等部分には同一符号が附されてい
る。In the figure, parts equivalent to those of the above embodiment are given the same reference numerals.
（発明の効果）
本発明によれば前記したように、構造物と基礎との間に
、すべり材上に積層ゴム部材を一体に重層接着してなる
複合すペリ支承を介装するとともに、構造物における複
合すペリ支承の外周に変形制限部材を配設し、同部材に
よって前記積層ゴム部材の剪断変形を一定限度内に制限
することにより、地震時、同積層ゴム部材が過大な変形
を生起して破損し、上部構造物が倒壊するのを防止する
ことができる。(Effects of the Invention) According to the present invention, as described above, a composite periphery support formed by laminated rubber members integrally bonded on a sliding material is interposed between the structure and the foundation, and the structure By disposing a deformation limiting member on the outer periphery of the composite periphery support of the object, and by limiting the shear deformation of the laminated rubber member to within a certain limit by the member, it is possible to prevent the laminated rubber member from causing excessive deformation during an earthquake. This can prevent damage and collapse of the superstructure.
またこのように積層ゴム部材の変形が、前記変形制限部
材によって拘束され、構造物に対する地震人力が増大し
ても、すべり材が滑動することによって地震入力を頭打
ちにすることができ、共振現象を防止できるので、有効
な免震効果を得ることができる。In addition, the deformation of the laminated rubber member is restrained by the deformation limiting member in this way, and even if the earthquake force on the structure increases, the earthquake input can reach a ceiling due to the sliding of the sliding member, and the resonance phenomenon can be suppressed. Since this can be prevented, an effective seismic isolation effect can be obtained.
第１図は本発明に係る免震構造物における支承の一実施
例を示す縦断面図、第２図及び第３図は夫々積層ゴム材
の変形制限部材による変形制限部材に変形制限時の状態
を示す縦断面図、第４図は前記支承の力学特性図、第５
図は本発明に係る免震構造物における支承の他の実施例
を示す縦断面図、第６図及び第７図は夫々その部分横断
平面図である。
（Ａ）−・・上部構造物の柱ＦＢ （Ｂ）・・・・す
べり板（１）・・−すペリ材 （２）・−積
層ゴム部材（３）−・変形制限部材
代理人 弁理士 岡 本 重 文
外２名
第１図
第２図
第３凹
剪断力
第４閃
亮５皿
第７図 第６巴FIG. 1 is a vertical cross-sectional view showing an embodiment of the support in the seismic isolation structure according to the present invention, and FIGS. 2 and 3 are respectively the states of the deformation limiting member when the deformation limiting member is limited by the deformation limiting member of the laminated rubber material. FIG. 4 is a mechanical characteristic diagram of the bearing, and FIG.
The figure is a longitudinal sectional view showing another embodiment of the support in the seismic isolation structure according to the present invention, and FIGS. 6 and 7 are partial cross-sectional plan views thereof, respectively. (A) - Column FB of superstructure (B) - Sliding plate (1) - Perimeter material (2) - Laminated rubber member (3) - Deformation limiting member agent Patent attorney Shige Okamoto 2 people outside of Bungai Figure 1 Figure 2 Figure 3 Concave shear force 4 Senryo 5 dishes Figure 7 Tomoe
Claims (1)
べり支承を、構造物と基礎上のすべり板との間に介装す
るとともに、同構造物における前記複合すべり支承の外
周に、前記積層ゴム部材の一定限度以上の変形を抑制す
る変形制限部材を配設してなることを特徴とする免震構
造物における支承。A composite sliding bearing formed by integrally bonding a laminated rubber member onto a sliding material is interposed between the structure and the sliding plate on the foundation, and the laminated rubber member is attached to the outer periphery of the composite sliding bearing in the structure. 1. A support for a seismic isolation structure, comprising a deformation limiting member that suppresses deformation of a rubber member beyond a certain limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026544A JPH0726441B2 (en) | 1988-02-09 | 1988-02-09 | Support for seismic isolation structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026544A JPH0726441B2 (en) | 1988-02-09 | 1988-02-09 | Support for seismic isolation structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01203542A true JPH01203542A (en) | 1989-08-16 |
| JPH0726441B2 JPH0726441B2 (en) | 1995-03-22 |
Family
ID=12196448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63026544A Expired - Lifetime JPH0726441B2 (en) | 1988-02-09 | 1988-02-09 | Support for seismic isolation structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726441B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546711A (en) * | 1995-05-26 | 1996-08-20 | Heller; Paul S. | Base isolator fire barrier system |
| US5775038A (en) * | 1996-12-20 | 1998-07-07 | J. Muller International | Fixed point seismic buffer system |
| JP2011099462A (en) * | 2009-11-04 | 2011-05-19 | Shimizu Corp | Base isolation device |
| JP2019190601A (en) * | 2018-04-27 | 2019-10-31 | 大成建設株式会社 | Seismic isolation device, seismic isolation system, and seismically isolated structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261856A (en) * | 1985-09-12 | 1987-03-18 | Yazaki Corp | Wiring device assembled with functions for automobile |
| JPS6261856U (en) * | 1985-10-05 | 1987-04-17 |
-
1988
- 1988-02-09 JP JP63026544A patent/JPH0726441B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261856A (en) * | 1985-09-12 | 1987-03-18 | Yazaki Corp | Wiring device assembled with functions for automobile |
| JPS6261856U (en) * | 1985-10-05 | 1987-04-17 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546711A (en) * | 1995-05-26 | 1996-08-20 | Heller; Paul S. | Base isolator fire barrier system |
| WO1996037675A1 (en) * | 1995-05-26 | 1996-11-28 | Heller Paul S | Base isolator fire barrier system |
| US5775038A (en) * | 1996-12-20 | 1998-07-07 | J. Muller International | Fixed point seismic buffer system |
| JP2011099462A (en) * | 2009-11-04 | 2011-05-19 | Shimizu Corp | Base isolation device |
| JP2019190601A (en) * | 2018-04-27 | 2019-10-31 | 大成建設株式会社 | Seismic isolation device, seismic isolation system, and seismically isolated structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0726441B2 (en) | 1995-03-22 |
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