JP2001032569A - Vibration isolation structure with trigger mechanism - Google Patents
Vibration isolation structure with trigger mechanismInfo
- Publication number
- JP2001032569A JP2001032569A JP20622699A JP20622699A JP2001032569A JP 2001032569 A JP2001032569 A JP 2001032569A JP 20622699 A JP20622699 A JP 20622699A JP 20622699 A JP20622699 A JP 20622699A JP 2001032569 A JP2001032569 A JP 2001032569A
- Authority
- JP
- Japan
- Prior art keywords
- building
- seismic isolation
- trigger mechanism
- foundation
- earthquake
- 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.)
- Withdrawn
Links
Landscapes
- Vibration Prevention Devices (AREA)
- Springs (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、中高層ビルなどの
ように重量が比較的大きく、かつ、風圧を受ける面積が
大きい建造物に適用されるトリガー機構付免震建造物に
関し、詳しくは、建造物とその基礎部との間に、地震発
生に伴い基礎部に大きな外力が作用したとき、建造物の
基礎部に対する水平方向変位を許容する免震装置が配設
されている免震建造物が通常時に地震以外の外力、主に
風圧を受けて揺れ動くことがないように、この免震建造
物に変形抑制機能（トリガー機能）を付与してなるトリ
ガー機構付免震建造物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation structure with a trigger mechanism applied to a structure having a relatively large weight and a large area subjected to wind pressure, such as a middle and high-rise building. When a large external force is applied to the foundation part due to the occurrence of an earthquake between the object and its base part, a seismic isolation building that has a seismic isolation device that allows horizontal displacement of the building relative to the base part is installed. The present invention relates to a seismic isolation structure with a trigger mechanism, which is provided with a deformation suppression function (trigger function) to the seismic isolation structure so as not to sway due to an external force other than an earthquake, mainly wind pressure, during normal times.
【０００２】[0002]
【従来の技術】例えば積層ゴムなどの免震装置が建造物
とそれの基礎との間に配設されている免震建造物におい
ては、免震装置の免震周期を建造物の周期よりも長くす
ればするほど地震発生に伴う外力を有効に低減すること
が可能であり、そのため、大重量かつ受圧面積の大きい
建造物では一般的に免震周期の長い免震装置を用いるこ
とが望ましい。2. Description of the Related Art In a seismic isolation structure in which a seismic isolation device such as a laminated rubber is disposed between a building and its foundation, the seismic isolation period of the seismic isolation device is set to be shorter than the period of the building. The longer the length, the more effectively the external force accompanying the occurrence of the earthquake can be reduced. Therefore, it is generally desirable to use a seismic isolation device having a long seismic isolation cycle for a building having a large weight and a large pressure receiving area.
【０００３】ところが、免震装置の免震周期を長く設計
するためには、免震装置の水平剛性を低く設定しなけれ
ばならない。このように水平剛性の低い免震装置が配設
された建造物であっても、再現期間の長い大型台風が来
襲したとき、その風圧など地震以外の大きな外力を受け
て免震建造物自体が揺れ動き、居住性などを損なうとい
う問題がある。However, in order to design the seismic isolation device to have a long seismic isolation cycle, the horizontal rigidity of the seismic isolation device must be set low. Even in a building equipped with seismic isolation devices with low horizontal rigidity in this way, when a large typhoon with a long recall period hits, the seismic isolation structure itself receives large external forces other than earthquakes such as wind pressure. There is a problem of shaking and impairing comfort.
【０００４】そこで、大型台風による風圧などの外力で
は、免震建造物が揺れ動かない、あるいは、大変形しな
いような変形抑制機能（トリガー機能）を発揮するトリ
ガーを免震装置と併設することが考えられている。その
トリガー機構として、例えば特開平８−２８４１１５号
公報や特開平８−２８４１１４号公報等にみられるよう
に、免震装置の両側にピン構造のサイドブロックを配置
したり、ガイドレールに頭部を抱持された鋼製ダンパー
を配置したりして通常時には免震装置の変位を機械的に
拘束し、地震発生に伴う外力が作用したときにはその機
械的拘束を解除するように構成した機械的なトリガー機
構を用いたものが提案されている。[0004] Therefore, it is necessary to equip a seismic isolation device with a trigger that exerts a deformation suppressing function (trigger function) so that the seismic isolation building does not shake or undergo large deformation due to external force such as wind pressure caused by a large typhoon. It is considered. As the trigger mechanism, for example, as shown in JP-A-8-284115 and JP-A-8-284114, a pin-structured side block is disposed on both sides of the seismic isolation device, or a head is attached to the guide rail. Ordinarily a mechanical damper is used to restrain the displacement of the seismic isolation device by disposing a steel damper that is held, and to release the mechanical restraint when an external force is applied due to the occurrence of an earthquake. One using a trigger mechanism has been proposed.
【０００５】また、例えば特開平８−６８２３４号公報
等にみられるように、免震装置とは別個に建造物とそれ
の基礎部との間に、静摩擦力と動摩擦力との関係、Ｎ−
Ｓで引き合う磁力とＮ−Ｎ、Ｓ−Ｓで反発する磁力を有
する磁石、あるいは、窪みとボールベアリングの組み合
わせ、などのように風圧などの外力に対しては大きな抵
抗力を呈し、地震発生に伴う所定値以上の外力に対して
はその抵抗力が極端に小さくなる性質を利用した横揺れ
防止装置を配設したものも提案されている。Further, as seen in, for example, Japanese Patent Application Laid-Open No. 8-68234, the relationship between the static friction force and the dynamic friction force is separately provided between a building and a foundation thereof separately from the seismic isolation device.
A magnet that has a magnetic force attracted by S and a magnetic force repelled by NN and SS, or a large resistance to external forces such as wind pressure, such as a combination of a dent and a ball bearing, There has also been proposed a device provided with a roll prevention device utilizing the property of extremely reducing the resistance to an external force exceeding a predetermined value.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前者の
機械的なトリガー機構は、構造が非常に複雑であるだけ
でなく、大型台風の来襲のように、数１０年〜１００年
に１回といった長い再現期間の間にトリガー機構自体が
腐食したり、錆付いたりして所定のトリガー機能が損な
われてしまい、僅かな風圧や交通振動などによっても免
震構造物が揺れ動く事態を招く可能性が高い。また、仮
に長い再現期間に亘って所定のトリガー機能が確保され
ていたとしても、地震発生に伴い機械的拘束が一旦解除
されると、自己復帰性がないために、地震が修まった後
に再び所定のトリガー機能を発揮させるためには、人手
によって外れたサイドブロックを元の位置及び姿勢に戻
すなど機械的拘束状態への復元作業に大変な手間や労力
を要する。However, the mechanical trigger mechanism of the former not only has a very complicated structure, but also has a long time, such as once every several tens to 100 years, as in the case of a large typhoon. During the reproduction period, the trigger mechanism itself is corroded or rusted, and the predetermined trigger function is impaired, so that there is a high possibility that the seismic isolation structure will shake due to slight wind pressure or traffic vibration. Even if the predetermined trigger function is secured for a long reproduction period, once the mechanical restraint is released due to the occurrence of the earthquake, there is no self-recovery, so after the earthquake has been repaired, In order to perform the predetermined trigger function, it takes a great deal of labor and labor to restore the mechanically restrained state, such as returning the side block detached manually to the original position and posture.
【０００７】一方、後者の横揺れ防止装置は、もともと
戸建て住宅等の軽量建造物に免震装置を適用する際にそ
の免震装置のばね剛性が小さく設計されることから、通
常時に地震以外の外力、特に風の影響で軽量建造物が揺
れ動きやすくなることを防ぐためのものであり、地震発
生に伴う外力を有効に低減するために免震周期の長い免
震装置を用いている免震性能に優れた免震建造物に要求
される変形抑制機能は達成することができない。また、
このような横揺れ防止装置も前者のトリガー機構と同様
に、摩擦板や磁石、ボールベアリング等の機械要素を組
合わせてなるもので、構造が複雑であるとともに、再現
期間の長い大型台風などに対して横揺れ防止機能を発揮
させるまでに腐食や錆付きなどによって機能が損なわれ
る可能性が高い。On the other hand, when the anti-rolling device is originally applied to a light-weight building such as a detached house or the like, the seismic isolation device is designed to have a small spring rigidity. This is to prevent light-weight buildings from swaying easily under the influence of external forces, especially wind, and to use a seismic isolation device with a long seismic isolation cycle to effectively reduce the external forces associated with an earthquake. It cannot achieve the deformation control function required for a seismic isolated building with excellent performance. Also,
Similar to the former trigger mechanism, such a roll prevention device is a combination of mechanical elements such as friction plates, magnets, and ball bearings. On the other hand, there is a high possibility that the function will be impaired due to corrosion or rust before the roll prevention function is exerted.
【０００８】本発明は上記実情に鑑みてなされたもの
で、再現期間が長い大型台風による風圧などの大きい外
力に対しても所定のトリガー機能を確実に保持させるこ
とができながら、地震発生時には本来の優れた免震性能
を発揮させることができ、しかも構造簡単で地震が修ま
った後はなんらの人為作業も要することなく、再び所定
のトリガー機能を発揮する状態に復元させることができ
るトリガー機構付免震建造物を提供することを目的とし
ている。The present invention has been made in view of the above-mentioned circumstances, and can reliably maintain a predetermined trigger function against a large external force such as a wind pressure due to a large typhoon having a long reproduction period. Trigger mechanism that can exhibit excellent seismic isolation performance, and can be restored to the state where the specified trigger function is exhibited again after the earthquake has been repaired, without requiring any human work The purpose is to provide a seismic isolated building.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係るトリガー機構付免震建造物は、建造物
（Ａ）とその基礎部（Ｂ）との間に、地震発生に伴う外
力が作用したとき、建造物（Ａ）の基礎部（Ｂ）に対す
る水平方向変位を許容する免震装置（１）が配設されて
いる免震建造物において、建造物（Ａ）の重心中央部付
近と基礎部（Ｂ）のそれに対向する箇所との間に、通常
は免震装置（１）による建造物（Ａ）の水平変位を規制
もしくは抑制し、かつ、地震発生に伴い基礎部（Ｂ）に
所定値以上の外力が作用したときはその規制もしくは抑
制を解除して免震装置（１）による建造物（Ａ）の基礎
部（Ｂ）に対する水平変位を許容する粘弾性ダンパーか
らなるトリガー機構（２）を設置していることを特徴と
するものである。In order to achieve the above object, a seismic isolation building with a trigger mechanism according to the present invention is provided between an architectural structure (A) and its foundation (B). When a seismic isolation device (1) that allows horizontal displacement of the building (A) with respect to the foundation (B) when the accompanying external force is applied, the center of gravity of the building (A) is provided. Normally, the horizontal displacement of the building (A) by the seismic isolation device (1) is restricted or suppressed between the vicinity of the central portion and the opposite portion of the base portion (B), and the base portion is associated with the occurrence of the earthquake. When an external force exceeding a predetermined value acts on (B), the regulation or suppression is released and a viscoelastic damper that allows horizontal displacement of the building (A) with respect to the foundation (B) by the seismic isolation device (1). A trigger mechanism (2).
【００１０】ここで、上記免震装置（１）としては、
３．５秒以上の免震周期を有していることが好ましい。Here, as the seismic isolation device (1),
It is preferable to have a seismic isolation cycle of 3.5 seconds or more.
【００１１】また、トリガー機構（２）を構成する粘弾
性ダンパーは、剛性板材（２ａ）の間に単層または複数
層の粘弾性体（２ｂ）を挟在させただけの簡単な構成の
ものでよい。The viscoelastic damper constituting the trigger mechanism (2) has a simple structure in which a single layer or a plurality of layers of viscoelastic bodies (2b) are sandwiched between rigid plate members (2a). Is fine.
【００１２】上記構成の本発明によれば、通常時にはト
リガー機構を構成する粘弾性ダンパーが有する剛性によ
って、再現期間の長い大型台風の来襲により免震建造物
に大きい風圧が作用したとしても、建造物の揺れ動きを
規制もしくは抑制する所定のトリガー機能が確実に発揮
される状態を保持することが可能である。そして、地震
発生に伴い基礎部に所定値以上の外力が作用したとき
は、粘弾性ダンパーの有する変形能力によってトリガー
機能を解除して免震周期の長い免震装置の働きにより本
来の優れた免震性能を発揮させることが可能である。ま
た、トリガー機構が自己修正機能を持つ粘弾性ダンパー
のみで構成されているために、従来提案されている機械
的なトリガー機構に比べて構造簡単である上に、地震が
修まった後に再び所定のトリガー機能を発揮する状態へ
の復元作業に面倒な手間や労力を全く必要としない。According to the present invention having the above-described structure, the stiffness of the viscoelastic damper constituting the trigger mechanism normally makes it possible to construct a seismically isolated building even if a large wind pressure acts on the base-isolated building due to the arrival of a large typhoon with a long reproduction period. It is possible to maintain a state in which the predetermined trigger function for restricting or suppressing the swinging movement of the object is reliably performed. When an external force exceeding a predetermined value acts on the foundation due to the occurrence of an earthquake, the trigger function is released by the deformation capability of the viscoelastic damper, and the original excellent isolation is achieved by the function of the seismic isolation device with a long seismic isolation cycle It is possible to exhibit seismic performance. In addition, since the trigger mechanism is composed of only a viscoelastic damper having a self-correcting function, the structure is simpler than that of a mechanical trigger mechanism proposed conventionally, and the predetermined mechanism is again set after an earthquake is fixed. There is no need for any troublesome labor or effort to restore the state where the trigger function is exhibited.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を図面
にもとづいて説明する。図１は本発明に係る免震建造物
の全体概略正面図、図２は図１のＸ−Ｘ線での横断底面
図である。この免震建造物は中高層ビルなどの建造物Ａ
とその基礎部Ｂとの間で建造物Ａの建造範囲内の周囲
に、レベル１（２５ｋｉｎｅ）程度以上の地震発生に伴
い生じる外力が基礎部Ｂに作用したとき、建造物Ａの基
礎部Ｂに対する水平方向の変位を許容する複数の免震装
置１が配設されている。これら免震装置１は、例えば鉄
板等の金属板とゴムなど弾性板との複数枚を交互に積層
して上記地震発生に伴う外力が作用したとき水平方向に
弾性変形可能とされており、その弾性板として水平剛性
の低い材質のものを使用することにより、免震周期が
３．５秒以上、より好ましくは４秒以上に設定されてい
る。なお、免震装置１の具体的な構成は周知であるた
め、図示及び説明を省略する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic front view of a base-isolated building according to the present invention, and FIG. 2 is a cross-sectional bottom view taken along line XX of FIG. This seismic isolation building is a building A such as a middle-high-rise building.
When an external force generated due to the occurrence of an earthquake of level 1 (25 kine) or more acts on the base B around the area within the building range of the building A between the base B and the base B of the building A, A plurality of seismic isolation devices 1 that allow horizontal displacement with respect to are provided. These seismic isolation devices 1 are configured such that, for example, a plurality of metal plates such as iron plates and elastic plates such as rubber are alternately stacked and elastically deformable in a horizontal direction when an external force accompanying the occurrence of the earthquake acts. By using a material having low horizontal rigidity as the elastic plate, the seismic isolation cycle is set to 3.5 seconds or more, and more preferably 4 seconds or more. Since the specific configuration of the seismic isolation device 1 is well known, illustration and description are omitted.
【００１４】上記のような免震装置１が配設されている
免震建造物Ａの重心中央部付近と基礎部Ｂのそれに対向
する箇所との間にベースフランジ３，４を介してトリガ
ー機構２が設置されている。このトリガー機構２は、図
３に示すように、上下で対向する鉄板などの二枚の金属
板材２ａ，２ａ（剛性板材の例）の間に単層の粘弾性体
２ｂを挟在させてなる粘弾性ダンパー、あるいは、図４
に示すように、上下に間隔を隔てて配置した三枚の金属
板材２ａ…の各対向面間にそれぞれ粘弾性体２ｂ，２ｂ
を挟在させてなる粘弾性ダンパーから構成されている。A trigger mechanism is provided between the vicinity of the center of the center of gravity of the base-isolated building A on which the above-described base-isolation device 1 is disposed and the opposite part of the base B via the base flanges 3 and 4. 2 are installed. As shown in FIG. 3, the trigger mechanism 2 has a single-layered viscoelastic body 2b sandwiched between two metal plate members 2a, 2a (examples of rigid plate members) such as an iron plate that is vertically opposed to each other. Viscoelastic damper, or Figure 4
As shown in the figure, the viscoelastic bodies 2b, 2b are respectively provided between the opposing surfaces of the three metal
Is constituted by a viscoelastic damper interposed therebetween.
【００１５】上記トリガー機構２を構成する粘弾性ダン
パーの粘弾性体２ｂは高分子材料を主原料とし、種々の
配合のものが市販されており、十分な剛性と楕円ループ
の履歴特性と速度依存型の減衰特性を有するほかに、微
小な変形から大変形までの広い範囲に亘る変形能力を有
し、一旦破断しても数時間後には元の履歴特性に復元す
るという性質を持っている。The viscoelastic body 2b of the viscoelastic damper constituting the trigger mechanism 2 is made of a polymer material as a main raw material, and various kinds of the viscoelastic body are commercially available. In addition to having the damping characteristics of the mold, it has a deformation capability over a wide range from a small deformation to a large deformation, and has the property of being restored to the original hysteresis characteristics within several hours after being broken.
【００１６】上記のごとき特性を持つ粘弾性ダンパーか
ら構成されるトリガー機構２を免震周期の長い免震装置
１と併設してなる免震建造物Ａによれば、通常時は、ト
リガー機構２を構成する粘弾性ダンパーが有する剛性に
よって再現期間の長い大型台風が来襲して建造物Ａに大
きい風圧が作用したとしても、建造物Ａの揺れ動きを規
制もしくは抑制する所定のトリガー機能を確実に発揮す
る状態が保持されている。この状態で、レベル１程度以
上の地震発生に伴い建造物Ａの基礎部Ｂに所定値以上の
外力が作用したときは、トリガー機構２を構成する粘弾
性ダンパーが破断されてトリガー機能が解除され、免震
周期の長い免震装置１の働きにより本来の優れた免震性
能が発揮されることになる。According to the seismic isolation building A in which the trigger mechanism 2 composed of the viscoelastic damper having the above-described characteristics is provided together with the seismic isolation device 1 having a long seismic isolation cycle, the trigger mechanism 2 is normally used. Even if a large typhoon with a long replay period hits due to the stiffness of the viscoelastic damper that constitutes the structure and a large wind pressure acts on the building A, the predetermined trigger function that regulates or suppresses the swaying movement of the building A is surely exhibited. State is maintained. In this state, when an external force of a predetermined value or more acts on the base portion B of the building A due to the occurrence of an earthquake of level 1 or more, the viscoelastic damper constituting the trigger mechanism 2 is broken and the trigger function is released. By the operation of the seismic isolation device 1 having a long seismic isolation cycle, the original excellent seismic isolation performance is exhibited.
【００１７】そして、地震が修まった数時間後には、粘
弾性ダンパーが持つ自己修正機能によってトリガー機構
２は再び所定のトリガー機能を発揮するように復元して
上述の通常時の状態に戻り、その状態が保持される。After a few hours from the earthquake, the trigger mechanism 2 is restored to the predetermined trigger function by the self-correcting function of the viscoelastic damper and returns to the above-described normal state. That state is maintained.
【００１８】なお、上記実施の形態では、平面視形状が
正方形の建造物Ａを免震対象にしたもので説明したが、
これ以外に、例えば図５や図６に示すように、平面視形
状がコ字形やＬ字形の建造物Ａを免震対象とする場合で
も、その建造物Ａの重心中央部付近に粘弾性ダンパーか
らなるトリガー機構２を設置することによって、上記実
施の形態と同等なトリガー機能及び免震効果を発揮させ
ることが可能である。In the above embodiment, the building A having a square shape in a plan view has been described as being subjected to seismic isolation.
In addition, as shown in FIGS. 5 and 6, for example, when a building A having a U-shape or an L-shape in plan view is subjected to seismic isolation, a viscoelastic damper is provided near the center of the center of gravity of the building A. By installing the trigger mechanism 2 made of, it is possible to exhibit a trigger function and a seismic isolation effect equivalent to those of the above embodiment.
【００１９】[0019]
【発明の効果】以上のように、本発明によれば、粘弾性
ダンパーからなるトリガー機構を免震建造物に設置する
ことにより、通常時は粘弾性ダンパーが有する剛性によ
って再現期間の長い大型台風が来襲して免震建造物に大
きい風圧が作用したとしても、所定のトリガー機能を確
実に発揮させて建造物の揺れ動きを規制もしくは抑制す
ることができるものでありながら、地震の発生に伴い基
礎部に所定値以上の外力が作用したときは、トリガー機
能を解除して免震周期の長い免震装置の働きにより基礎
部から建造物への入力エネルギーを十分に低減し本来の
優れた免震性能を発揮させることができる。しかも、ト
リガー機構が自己修正機能を持つ粘弾性ダンパーのみで
構成されているために、従来より提案されている機械的
なトリガー機構に比べて構造及び施工が共に簡単かつ経
済的である上に、地震が修まった後は、なんら面倒な手
間や労力を要することなく、所定のトリガー機能を発揮
する状態に復元させることができるという効果を奏す
る。As described above, according to the present invention, by installing a trigger mechanism composed of a viscoelastic damper on a base-isolated building, a large typhoon having a long reproduction time due to the rigidity of the viscoelastic damper is normally provided. Even if a large wind pressure acts on a base-isolated building due to an attack, the predetermined trigger function can be reliably exerted to regulate or suppress the shaking movement of the building. When an external force greater than a predetermined value is applied to the base, the trigger function is released and the input of energy from the foundation to the building is sufficiently reduced by the function of the seismic isolation device with a long seismic isolation cycle, and the original excellent seismic isolation Performance can be demonstrated. Moreover, since the trigger mechanism is composed of only a viscoelastic damper having a self-correcting function, the structure and construction are both simpler and more economical than the conventionally proposed mechanical trigger mechanism. After the earthquake has been repaired, there is an effect that the state can be restored to a state in which the predetermined trigger function is exhibited without any troublesome labor.
【図１】本発明に係るトリガー機構付免震建造物の全体
概略正面図である。FIG. 1 is an overall schematic front view of a base-isolated building with a trigger mechanism according to the present invention.
【図２】図１のＸ−Ｘ線での横断底面図である。FIG. 2 is a cross-sectional bottom view taken along line XX of FIG.
【図３】トリガー機構の一例を示す拡大正面図である。FIG. 3 is an enlarged front view showing an example of a trigger mechanism.
【図４】トリガー機構の他の例を示す拡大正面図であ
る。FIG. 4 is an enlarged front view showing another example of the trigger mechanism.
【図５】免震対象とする建造物の他の例を示す概略平面
図である。FIG. 5 is a schematic plan view showing another example of a building to be subjected to seismic isolation.
【図６】免震対象とする建造物のもう一つの例を示す概
略平面図である。FIG. 6 is a schematic plan view showing another example of a building to be subjected to seismic isolation.
１ 免震装置 ２ トリガー機構（粘弾性ダンパー） ２ａ 金属板材（剛性板材） ２ｂ 粘弾性体 Ａ 建造物 Ｂ 基礎部 DESCRIPTION OF SYMBOLS 1 Seismic isolation device 2 Trigger mechanism (viscoelastic damper) 2a Metal plate material (rigid plate material) 2b Viscoelastic body A Building B Foundation
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3J048 AA02 AC05 BA08 BD08 BG10 DA01 EA38 3J059 AA10 BA43 BC06 BC20 DA50 GA42 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J048 AA02 AC05 BA08 BD08 BG10 DA01 EA38 3J059 AA10 BA43 BC06 BC20 DA50 GA42
Claims (3)
に伴う外力が作用したとき、建造物の基礎部に対する水
平方向変位を許容する免震装置が配設されている免震建
造物において、 建造物の重心中央部付近と基礎部のそれに対向する箇所
との間に、通常は免震装置による建造物の水平変位を規
制もしくは抑制し、かつ、地震発生に伴い基礎部に所定
値以上の外力が作用したときはその規制もしくは抑制を
解除して免震装置による建造物の基礎部に対する水平変
位を許容する粘弾性ダンパーからなるトリガー機構を設
置していることを特徴とするトリガー機構付免震建造
物。1. A seismic isolation building in which a seismic isolation device that allows horizontal displacement of the building relative to the foundation when an external force accompanying the occurrence of an earthquake acts between the building and the foundation thereof is provided. In the structure, the horizontal displacement of the building by the seismic isolation device is usually restricted or suppressed between the center of gravity of the building and the opposite part of the foundation, and the specified When an external force greater than the value is applied, the trigger or release of the regulation or restraint is released and a trigger mechanism consisting of a viscoelastic damper that allows horizontal displacement of the building by the seismic isolation device is installed. Seismic isolation building with mechanism.
期を有するものである請求項１に記載のトリガー機構付
免震建造物。2. The seismic isolation building with a trigger mechanism according to claim 1, wherein the seismic isolation device has a seismic isolation cycle of 3.5 seconds or more.
パーは、剛性板材の間に単層または複数層の粘弾性体を
挟在させてなるものである請求項１または２に記載のト
リガー機構付免震建造物。3. The trigger mechanism according to claim 1, wherein the viscoelastic damper constituting the trigger mechanism comprises a single layer or a plurality of layers of a viscoelastic body interposed between rigid plate members. Seismic isolation building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20622699A JP2001032569A (en) | 1999-07-21 | 1999-07-21 | Vibration isolation structure with trigger mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20622699A JP2001032569A (en) | 1999-07-21 | 1999-07-21 | Vibration isolation structure with trigger mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001032569A true JP2001032569A (en) | 2001-02-06 |
Family
ID=16519862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20622699A Withdrawn JP2001032569A (en) | 1999-07-21 | 1999-07-21 | Vibration isolation structure with trigger mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001032569A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004060828A (en) * | 2002-07-30 | 2004-02-26 | Okumura Corp | Vibration attenuation type base-isolated building and vibration attenuation equipment used for the same |
| KR100943037B1 (en) | 2004-06-16 | 2010-02-19 | 가부시끼가이샤 히다치 세이사꾸쇼 | Detect system for train positioning |
-
1999
- 1999-07-21 JP JP20622699A patent/JP2001032569A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004060828A (en) * | 2002-07-30 | 2004-02-26 | Okumura Corp | Vibration attenuation type base-isolated building and vibration attenuation equipment used for the same |
| KR100943037B1 (en) | 2004-06-16 | 2010-02-19 | 가부시끼가이샤 히다치 세이사꾸쇼 | Detect system for train positioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20061003 |