JP4200660B2 - Seismic isolation structure dropout prevention device - Google Patents

Seismic isolation structure dropout prevention device Download PDF

Info

Publication number
JP4200660B2
JP4200660B2 JP2001021703A JP2001021703A JP4200660B2 JP 4200660 B2 JP4200660 B2 JP 4200660B2 JP 2001021703 A JP2001021703 A JP 2001021703A JP 2001021703 A JP2001021703 A JP 2001021703A JP 4200660 B2 JP4200660 B2 JP 4200660B2
Authority
JP
Japan
Prior art keywords
string
fixing means
fixing
seismic isolation
upper structure
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
Application number
JP2001021703A
Other languages
Japanese (ja)
Other versions
JP2002286090A (en
Inventor
敏雄 藤岡
Original Assignee
敏雄 藤岡
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 敏雄 藤岡 filed Critical 敏雄 藤岡
Priority to JP2001021703A priority Critical patent/JP4200660B2/en
Priority to PCT/JP2002/007215 priority patent/WO2004007991A1/en
Publication of JP2002286090A publication Critical patent/JP2002286090A/en
Application granted granted Critical
Publication of JP4200660B2 publication Critical patent/JP4200660B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Foundations (AREA)
  • Bridges Or Land Bridges (AREA)
  • Vibration Prevention Devices (AREA)

Description

【0001】
【発明が属する技術分野】
本発明は、構造物の免震構造または橋桁の脱落防止に関するものである。
【0002】
【従来の技術】
免震構造物の地震による過大変形を抑制するため、紐状体による変位の限定装置が知られている。また、PC鋼材やPCケーブル等を用いた落橋防止装置が知られている。
【0003】
しかし、免震装置が設置される空間は、高さが限定されて取付け用のスペースを必要とする。また、PC鋼材やPCケーブル等を用いた場合には端部の定着が複雑となる。
【0004】
【発明が解決しようとする課題】
解決しようとする問題点は、脱落防止装置が限られた空間に小型に取付けられない点である。また、PC鋼材等では定着機構が複雑であり、雨水の浸入等により腐食生じる恐れのある点である。
【0005】
【課題を解決するための手段】
本発明は、前記課題を解決するため、次のような構成を有する。請求項1の発明(例えば図1,図3〜7)は、下部構造体3と上部構造体2との間に介在し、かつ、前記上部構造体2を水平方向に移動自在に支持する免震支承1を備えた免震構造において、上部構造体2が所定量変位したときに緊張して構造物の変位を規制する少なくとも1つの紐状体21と、上部構造体2及び下部構造体3のうちの一方に固定され又は水平面内でのみ回転自在に取り付けられると共に開口部から内部に略水平方向に挿通される紐状体の一方の端部を定着する一方の定着手段11〜16と、上部構造体2及び下部構造体3のうちの他方に固定され又は水平面内でのみ回転自在に取り付けられると共に開口部から内部に略水平方向に挿通される紐状体21の他方の端部を定着する他方の定着手段11〜16とを有しており一方の定着手段11〜16及び他方の定着手段11〜16のうちの少なくとも1つには紐状体21を挿通するための挿通手段31,32,43が設けられており、紐状体21は一方の定着手段11〜16及び他方の定着手段11〜16のうちの少なくとも1つの挿通手段31,32,43に略水平方向に挿通されて下部構造体3と上部構造体2との間に少なくとも1つの閉鎖輪を形成し、紐状体21の一方の端部又は紐状体21の他方の端部は下部構造体3または上部構造体2に揺動自在に連結されている免震構造物の脱落防止装置である
【0006】
この請求項1記載の脱落防止装置によれば、免震構造において、下部構造体側と上部構造体側は紐状体と定着手段により連結され、下部構造体と上部構造体との間の変位が所定量に達したときに緊張して構造物の脱落を防止できる。紐状体に高強度繊維ロープを用いることにより、上部構造体の変形に柔軟に追従し、腐食しない。また、紐状体を複数本連結することにより、大きな引張り荷重を負担できる。
【0007】
請求項2の発明(例えば図9〜10)は、下部構造体3と上部構造体2との間に介在し、かつ、前記上部構造体2を水平方向に移動自在に支持する免震支承1を備えた免震構造において、上部構造体2が所定量変位したときに緊張して構造物の変位を規制する少なくとも1つの紐状体21と、上部構造体2及び下部構造体3のうちの一方に埋め込まれて固定されると共に開口部から内部に略鉛直方向に挿通される紐状体21の一方の端部を定着する筒状形の一方の定着手段17と、上部構造体2及び下部構造体3のうちの他方に埋め込まれて固定されると共に開口部から内部に略鉛直方向に挿通される紐状体21の他方の端部を定着する筒状形の他方の定着手段17とを有しており一方の定着手段17及び他方の定着手段17のうちの少なくとも1つには紐状体21を挿通するための挿通手段31,32,43が設けられており、紐状体21は一方の定着手段17及び他方の定着手段17のうちの少なくとも1つの挿通手段31,32,43に略鉛直方向に挿通されて下部構造体3と上部構造体2との間に少なくとも1つの閉鎖輪を形成し、紐状体21の一方の端部又は紐状体21の他方の端部は下部構造体3または上部構造体2に揺動自在に連結されている免震構造物の脱落防止装置である
【0008】
この請求項2記載の脱落防止装置によれば、免震構造において、下部構造体側と上部構造体側は紐状体と定着手段により連結されているので、免震支承に作用する上下方向荷重等がその許容値を超えて該支承に損傷を与えた場合にも、紐状体が緊張して構造物の脱落を防止できる。また、下部構造体と上部構造体との間の水平変位を所定量に限定することにより免震支承の損傷を防止することができる。定着手段は筒状形をなして上下部構造体に埋め込まれるため、小型で大きな引抜き抵抗力を得られる。紐状体に高強度繊維ロープを用いることにより、上部構造体の変形に柔軟に追従し、腐食しない。また、紐状体を複数本連結することにより、大きな引張り荷重を負担できる。
【0009】
請求項の発明においては、一方の定着手段11〜16及び他方の定着手段11〜16のうちの少なくとも1つの挿通手段31,32,43は、一方の定着手段11〜16又は他方の定着手段11〜16の内部から開口部にいくにつれて次第に広がった湾曲形状部43と、前記一方の定着手段11〜16又は他方の定着手段11〜16の内部に設けられていると共に前記開口部から内部に略水平方向に挿通された紐状体21の一方の端部又は紐状体21の他方の端部を定着する少なくとも1つの円弧状のフック31,32とを有していることを特徴としていてもよい請求項2の発明においては、一方の定着手段17及び他方の定着手段17のうちの少なくとも1つの挿通手段31,32,43は、一方の定着手段17又は他方の定着手段17の内部から開口部にいくにつれて次第に広がった湾曲形状部43と、前記一方の定着手段17又は他方の定着手段17の内部に設けられていると共に前記開口部から内部に略鉛直方向に挿通された紐状体21の一方の端部又は紐状体21の他方の端部を定着する少なくとも1つの円弧状のフック31,32とを有していることを特徴としていてもよい。
【0010】
この請求項記載の免震構造物の脱落防止装置及び請求項2記載の免震構造物の脱落防止装置によれば、紐状体は滑らかに円弧状のフックに接するため損傷が少ない。フックは、紐状体をより確実に定着することができ、製作が簡単で、定着手段をより小型にすることができる。
【0011】
請求項の発明(例えば図4)は、請求項1又は2に記載の免震構造物の脱落防止装置において、紐状体21と挿通手段31,32の間には摺動部材23が介在されていることを特徴とする免震構造物の脱落防止装置である
【0012】
この請求項記載の脱落防止装置によれば、請求項1又は2と同様の効果が得られると共に、紐状体に加わる引張り力を均等にすることができる。
【0013】
請求項の発明(例えば図4)は、請求項1〜のいずれかに記載の免震構造物の脱落防止装置において、紐状体21と挿通手段31,32の間には緩衝材22が介在されていることを特徴とする免震構造物の脱落防止装置である
【0014】
この請求項記載の脱落防止装置によれば、請求項1〜と同様の効果が得られると共に、紐状体と挿通手段の間には緩衝材が介在されているため、紐状体と定着手段に加わる衝撃荷重を低減することができる。
【0015】
請求項の発明(例えば図1,図3〜10)は、請求項1〜のいずれかに記載の免震構造物の脱落防止装置において、紐状体21と定着手段11〜17は雨水の付着を防止するための、これらを覆って下部構造体3と上部構造体2との間に介在された、防水手段61を有することを特徴とする免震構造物の脱落防止装置である
【0016】
この請求項記載の脱落防止装置によれば、請求項1〜と同様の効果が得られると共に、紐状体と定着手段は防水手段により覆われているため雨水が浸入することがない。
【0017】
請求項の発明(例えば図1,図3〜10)は、請求項1〜のいずれかに記載の免震構造物の脱落防止装置において、紐状体21と定着手段11〜17は、これらを覆って下部構造体と上部構造体との間に介在された、耐火性材料61を有することを特徴とする免震構造物の脱落防止装置である
【0018】
この請求項記載の脱落防止装置によれば、請求項1〜と同様の効果が得られると共に、紐状体と定着手段は耐火性材料からなる蛇腹材により覆われているため、耐火性能を有する。
【0019】
【発明の実施の形態】
以下、本発明に係る免震構造物における脱落防止装置の実施の形態を、図面を参照して詳細に説明する。
【0020】
(第1の実施の形態)
図1の(a)は本実施の形態の平断面図、同図(b)は本実施の形態の縦断面図であって、脱落防止装置を定着手段11により構造体に取付けた状態を示す。図2の(a)は本実施の形態の本脱落防止装置を上部構造体2と下部構造体3に取付けた状態の平断面図、(b)はA位置での縦断面図である。この例では、図2のように上部構造体2と固定された側の下部構造体3との間に免震支承1が介装され、脱落防止装置は定着手段11を介して上部構造体2と下部構造体3に連結されている。上部構造体2と礎側の下部構造体3との間の床の隙間は、伸縮自在床版4により通行可能なように塞がれている。
【0021】
上部構造体2と下部構造体3は図1に示すように定着手段11が取付けられている。定着手段11の内部には、円柱状のフック31と平面視円弧形の柱状フック32がベースプレート41に固定されている。フック31,32には、ロープを掛けるための溝が複数個形成されている。ベースプレート41は、ナット51とボルト52により上部構造体2または下部構造体3に固定されている。ベースプレート44とフック31,32等は高力黄銅鋼等の金属部材としても良い。
【0022】
フック31,32はカバー42で覆われており、該カバー42には紐状体21を挿通するための開口が設けられている。カバー42に設けられた開口は、内部から開口部にいくにつれて、次第に広がった湾曲形状43を有している。紐状体21は開口から挿通されてフック31,32に定着されており、上部構造体2と下部構造体3を一定のたわみを持って連結している。このたわみは、上部構造体2の変形により紐状体21が緊張して変形を制限し、下部構造体3から脱落するのを防止できるように設定されている。
【0023】
前記紐状体21、合成繊維としてのアラミド繊維、ポリアミド繊維、ポリエステル繊維或いはポリビニルアルコール繊維等であり、その他炭素繊維・ガラス繊維等高強度の繊維からなる。
【0024】
紐状21と湾曲形状43を有する開口は、蛇腹状の保護材61が取付けられている。この蛇腹状の保護材61を構成する耐火性材料は、可撓性を有するロックウール・セラミックファイバーブランケット・ガラスクロス・耐火性不織布等の耐火性材料、その他防水性表皮材の好適な組み合わせから構成されている。これにより、脱落防止装置には防塵効果・防水効果・耐火性能が付与される。紐状体21は、留め輪62により適宜束ねられている。
【0025】
(第2の実施の形態)
本発明の脱落防止装置は、実施の形態1に記載の脱落防止装置における定着手段11が、図3に示す定着手段12に置き換わったものである。
【0026】
定着手段12の内部には、紐状体21の挿通方向に沿って、2つの円柱状のフック31がベースプレート41に固定されている。フック31,32は、本例に限らず、平面視紐状体21の挿通直角方向に複数個取付けてよい。他の要素は、実施の形態1に同様であるので省略する。
このため、紐状体21の本数を簡単に増やすことができ、引張り荷重を高めることができる。
【0027】
(第3の実施の形態)
本発明の脱落防止装置は、実施の形態1に記載の脱落防止装置における定着手段11が、図4に示す定着手段13に置き換わったものである。
【0028】
定着手段13の内部には、円柱状のフック31がベースプレート41に固定されている。フック31はカバー44で覆われており、カバー44は、回転ピン45とベアリング46により回動自在にフック31に取付けられている。
このため、上部構造体2が前後・左右に変位しても、紐状体21は自在に回転して変形に追従する。
【0029】
(第4の実施の形態)
本発明の脱落防止装置は、実施の形態3に記載の脱落防止装置における定着手段13が、図5に示す定着手段14に置き換わったものである。
【0030】
フック31の外周部には、半円筒状の外殻フック33が回動自在に固定されている。図示はしないが、フック31と外殻フック33の接触面はテフロン等により摩擦の少ないように構成されている。
このため、上部構造体2が前後・左右に変位しても、紐状体21は自在に回転して変形に追従すると共に、紐状体21の本数を簡単に増やすことができる。
【0031】
(第5の実施の形態)
本発明の脱落防止装置は、実施の形態1に記載の脱落防止装置における定着手段11が、図6に示す定着手段15に置き換わったものである。
【0032】
下部構造体3に設けられた溝に、ベースプレート41が係留され、ベースプレート41の下面にはベアリング47が介装されている。
このため、上部構造体2が前後・左右に変位しても、紐状体21は自在に回転して変形に追従する。
【0033】
(第6の実施の形態)
本発明の脱落防止装置は、実施の形態1に記載の脱落防止装置における定着手段11が、図7に示す定着手段16に置き換わったものである。
図8は本実施の形態の定着手段16を下部構造体3に、実施の形態1の定着手段11を上部構造体2に複数個取付けた縦断面図である。
【0034】
定着手段16の内部には、円柱状のフック31と平面視円弧形の柱状フック32a,32b,32c,32dがベースプレート41に固定されている。フック31,32a,32b,32c,32dには、ロープを掛けるための溝が複数個形成されている。
紙面左側から挿通される紐状体21は開口から挿通されてフック31,32bに定着されており、紙面右側から挿通される紐状体21はこれと対称の構成となっている。また、紙面上側から挿通される紐状体21は開口から挿通されてフック31,32dに定着されており、紙面下側から挿通される紐状体21はこれと対称の構成となっている。
このため、紐状体21の前後左右のたわみ量と本数を変化させることにより、上部構造体2の変形制限距離と装置の許容荷重を、前後左右に異なるものとすることができる。
【0035】
(第7の実施の形態)
図9の(a)は本実施の形態のA位置での平断面図、同図(b)は本実施の形態の縦断面図であって、脱落防止装置を定着手段17により構造体に取付けた状態を示す。図10の(a)は本実施の形態の本脱落防止装置を上部構造体2と下部構造体3に取付けた状態の平断面図、(b)はA位置での縦断面図である。この例では、図10のように上部構造体2と固定された側の下部構造体3との間に免震支承1が介装され、脱落防止装置は定着手段17を介して上部構造体2と下部構造体3に連結されている。免震支承1の周囲は、耐火性部材5により覆われている。
【0036】
円筒状の定着手段17の内部には、円柱状のフック31と断面視円弧形の柱状フック32が固定されている。フック31,32には、ロープを掛けるための溝が複数個形成されている。円筒状の定着手段17は、ナット51とボルト52により上部構造体2または下部構造体3に固定されている。
【0037】
定着手段17の開口部は、内部から開口部にいくにつれて、次第に広がった湾曲形状43を有している。紐状体21は開口から挿通されてフック31,32に定着されており、上部構造体2と下部構造体3を一定のたわみを持って連結している。このたわみは、上部構造体2の変形により紐状体21が緊張して変形を制限し、下部構造体3から脱落するのを防止できるように設定されている。
【0038】
紐状21と湾曲形状43を有する開口は、蛇腹状の保護材61が取付けられている。この蛇腹状の保護材61を構成する耐火性材料は、可撓性を有するロックウール・セラミックファイバーブランケット・ガラスクロス・耐火性不織布等の耐火性材料、その他防水性表皮材の好適な組み合わせから構成されている。これにより、脱落防止装置には防塵効果・防水効果・耐火性能が付与される。紐状体21は、留め輪62により適宜束ねられている。
【0039】
なお、本発明の脱落防止装置は上記の実施形態に限定されることなく、本発明の趣旨を逸脱しない範囲において、種々の改良ならびに設計の変更を行っても良い。
脱落防止装置は、下部構造体3の上に設けられた、複数の上部構造体2同士を連結する構成としても良い。また、免震支承1に類する変形手段を有する構造物に適用しても良い。
紐状体21は、風揺れを防止するため、バネまたはダンパーで適宜上部構造体2や下部構造体3と連結してよい。蛇腹状の保護材61は、弾力性を有する材料を用いてバネと同等の効果を持たせても良く、鉛等の粘弾性材料を付勢したものとしても良い。
また、定着手段11等は、ナット51とボルト52により上部構造体2と下部構造体3に固定したが、これに限らず、上部構造体2または下部構造体3に固定され、紐状体21の挿通方向に垂直な面をなし、紐状体21の挿通用の開口を有する支圧版に、ベースプレート41およびカバー42が可動な状態で当接するように定着しても良い。この場合、該支圧版は箱型に形成してもよく、また、支圧版とベースプレート41およびカバー42の当接面には緩衝材を設けても良い。筒状の定着手段17の平面視断面形状は円形に限らず、四角形・三角形・多角形・楕円形等としてよい。また、筒状の定着手段17の外周ににネジを切り、上下部構造体に固定したナットに定着しても良い。
その他、具体的な細部構造についても適宜変更可能であることは勿論である。
【0040】
【発明の効果】
請求項1記載の脱落防止装置によれば、免震構造において、下部構造体側と上部構造体側は紐状体と定着手段により連結され、下部構造体と上部構造体との間の変位が所定量に達したときに緊張して構造物の脱落を防止できる。紐状体に高強度繊維ロープを用いることにより、上部構造体の変形に柔軟に追従し、腐食しない。また、紐状体を複数本連結することにより、大きな引張り荷重を負担できる。
【0041】
請求項2記載の脱落防止装置によれば、免震構造において、下部構造体側と上部構造体側は紐状体と定着手段により連結されているので、免震支承に作用する上下方向荷重等がその許容値を超えて該支承に損傷を与えた場合にも、紐状体が緊張して構造物の脱落を防止できる。また、下部構造体と上部構造体との間の水平変位を所定量に限定することにより免震支承の損傷を防止することができる。定着手段は筒状形をなして上下部構造体に埋め込まれるため、小型で大きな引抜き抵抗力を得られる。紐状体に高強度繊維ロープを用いることにより、上部構造体の変形に柔軟に追従し、腐食しない。また、紐状体を複数本連結することにより、大きな引張り荷重を負担できる。
【0042】
請求項1又は2記載の脱落防止装置によれば、請求項1〜2と同様の効果が得られると共に、紐状体は滑らかに円弧状のフックに接するため損傷が少ない。フックは、紐状体をより確実に定着することができ、製作が簡単で、定着手段をより小型にすることができる。
【0043】
請求項記載の脱落防止装置によれば、請求項1又2と同様の効果が得られると共に、紐状体に加わる引張り力を均等にすることができる。
【0044】
請求項記載の脱落防止装置によれば、請求項1〜と同様の効果が得られると共に、紐状体と挿通手段の間には緩衝材が介在されているため、紐状体と定着手段に加わる衝撃荷重を低減することができる。
【0045】
請求項記載の脱落防止装置によれば、請求項1〜と同様の効果が得られると共に、紐状体と定着手段は防水手段により覆われているため雨水が浸入することがない。
【0046】
請求項記載の脱落防止装置によれば、請求項1〜と同様の効果が得られると共に、紐状体と定着手段は耐火性材料からなる蛇腹材により覆われているため、耐火性能を有する。
【図面の簡単な説明】
【図1】本発明の脱落防止装置の一例であり(a)は平断面図、(b)は縦断面図である。(実施例1)
【図2】本発明の脱落防止装置の適用例であり(a)は平断面図、(b)は縦断面図である。(実施例1)
【図3】定着手段の他の一例のであり(a)は平断面図、(b)は縦断面図である。(実施例2)
【図4】定着手段のさらに他の一例のであり(a)は平断面図、(b)は縦断面図である。(実施例3)
【図5】定着手段のさらに他の一例のであり(a)は平断面図、(b)は縦断面図である。(実施例4)
【図6】定着手段のさらに他の一例のであり(a)は平断面図、(b)は縦断面図である。(実施例5)
【図7】定着手段のさらに他の一例のであり(a)は平断面図、(b)は縦断面図である。(実施例6)
【図8】本発明の脱落防止装置の適用例の縦断面図である。(実施例6)
【図9】本発明の脱落防止装置の他の一例のであり(a)はA位置の平断面図、(b)は縦断面図である。(実施例7)
【図10】本発明の脱落防止装置の適用例であり(a)は平断面図、(b)はA位置の縦断面図である。(実施例7)
【符号の説明】
1 免震支承
2 上部構造体
3 下部構造体
4 伸縮自在床版
11〜17 定着手段
21 紐状体
22 緩衝材
23 摺動部材
31,32 フック
33 外殻フック
34 枠部材
41 ベースプレート
42 カバー
43 凸部
44 回転カバー
45 ピン
46,47 ベアリング
51 ナット
52 ボルト
61 蛇腹の保護材
62 留め輪
[0001]
[Technical field to which the invention belongs]
The present invention relates to a seismic isolation structure for a structure or prevention of a bridge girder from falling off.
[0002]
[Prior art]
In order to suppress an excessive deformation due to an earthquake of a base-isolated structure, a displacement limiting device using a string-like body is known. Moreover, a falling bridge prevention device using a PC steel material, a PC cable, or the like is known.
[0003]
However, the space where the seismic isolation device is installed is limited in height and requires a space for installation. Further, when a PC steel material, a PC cable or the like is used, fixing of the end portion becomes complicated.
[0004]
[Problems to be solved by the invention]
The problem to be solved is that the drop-off prevention device cannot be compactly installed in a limited space. In addition, the fixing mechanism of PC steel materials is complicated, and corrosion may occur due to the intrusion of rainwater.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. The invention of claim 1 (for example, FIGS. 1 and 3 to 7) is an invention that is interposed between the lower structure 3 and the upper structure 2 and supports the upper structure 2 so as to be movable in the horizontal direction. In the seismic isolation structure including the seismic support 1, at least one string-like body 21 that tensions and regulates the displacement of the structure when the upper structure 2 is displaced by a predetermined amount, and the upper structure 2 and the lower structure 3. and one one fixing means for fixing one end of the string-like body which is inserted in a substantially horizontal direction into unit with rotatably mounted only within a fixed or a horizontal plane 11-16 of, The other end of the string-like body 21 fixed to the other of the upper structure 2 and the lower structure 3 or attached rotatably only in a horizontal plane and inserted through the opening in a substantially horizontal direction is fixed. It has the other fixing means 11 to 16, At least one of the square of the fixing means 11 to 16 and the other fixing means 11 to 16 is provided with interpolation communication means 31,32,43 for inserting a string-like body 21, the string-like body 21 Is inserted between the lower structure 3 and the upper structure 2 in a substantially horizontal direction through at least one insertion means 31, 32, 43 of one fixing means 11-16 and the other fixing means 11-16. to form at least one closed loop, immune and the other end portion of the one end or the string-like body 21 of the string-like body 21 that is swingably connected to the lower structure 3 or superstructure 2 Isolation a falling-off prevention device of a structure.
[0006]
According to the dropout prevention device of the first aspect, in the seismic isolation structure, the lower structure side and the upper structure side are connected by the string-like body and the fixing means, and the displacement between the lower structure and the upper structure is fixed. Tension can be prevented when the fixed amount is reached, and the structure can be prevented from falling off. By using a high-strength fiber rope for the string-like body, it flexibly follows the deformation of the upper structure and does not corrode. Moreover, a large tensile load can be borne by connecting a plurality of string-like bodies.
[0007]
The invention of claim 2 (for example, FIGS. 9 to 10) is a seismic isolation bearing 1 that is interposed between the lower structure 3 and the upper structure 2 and supports the upper structure 2 movably in the horizontal direction. In the seismic isolation structure comprising: at least one string-like body 21 that is tensioned to regulate displacement of the structure when the upper structure 2 is displaced by a predetermined amount; and the upper structure 2 and the lower structure 3 One fixing means 17 having a cylindrical shape for fixing one end of a string-like body 21 that is embedded and fixed in one side and is inserted through the opening in a substantially vertical direction, and the upper structure 2 and the lower part The other fixing means 17 having a cylindrical shape for fixing the other end of the string-like body 21 that is embedded and fixed in the other of the structures 3 and is inserted through the opening in a substantially vertical direction. has, little of the one fixing unit 17 and the other fixing means 17 Least one A is provided with interpolation communication means 31,32,43 for inserting a string-like body 21, string-like body 21 is at least one of the one of the fixing means 17 and the other fixing means 17 at least one closed loop is formed, one end of the string-like body 21 or cord-like between the lower structure 3 is substantially inserted in the vertical direction into the insertion means 31,32,43 of the upper structure 2 the other end of the body 21 is a falling-off prevention device of seismic isolation structure that is swingably connected to the lower structure 3 or superstructure 2.
[0008]
According to the dropout prevention device of the second aspect, in the seismic isolation structure, the lower structure side and the upper structure side are connected to each other by the string-like body and the fixing means. Even when the support is damaged beyond the allowable value, the string-like body can be tensioned to prevent the structure from falling off. Further, by limiting the horizontal displacement between the lower structure and the upper structure to a predetermined amount, it is possible to prevent the seismic isolation bearing from being damaged. Since the fixing means has a cylindrical shape and is embedded in the upper and lower structures, a small pulling resistance can be obtained. By using a high-strength fiber rope for the string-like body, it flexibly follows the deformation of the upper structure and does not corrode. Moreover, a large tensile load can be borne by connecting a plurality of string-like bodies.
[0009]
According to the first aspect of the present invention , at least one insertion means 31, 32, 43 of the one fixing means 11-16 and the other fixing means 11-16 is the one fixing means 11-16 or the other fixing means. A curved portion 43 that gradually expands from the inside of 11 to 16 toward the opening, and is provided inside the one fixing unit 11 to 16 or the other fixing unit 11 to 16 and from the opening to the inside. It characterized that you have and at least one arcuate hook 31, 32 to fix the other end of the one end or the string-like body 21 of the string-like body 21 which is inserted in a substantially horizontal direction It may be . In the invention of claim 2, at least one insertion means 31, 32, 43 of the one fixing means 17 and the other fixing means 17 is open from the inside of the one fixing means 17 or the other fixing means 17. Of the string-shaped body 21 which is gradually expanded from the opening to the inside of the one fixing means 17 or the other fixing means 17 and which is gradually extended as the distance increases. It may be characterized by having at least one arc-shaped hook 31, 32 that fixes one end or the other end of the string-like body 21.
[0010]
According to the seismic isolation structure fall-off prevention device described in claim 1 and the seismic isolation structure fall-off prevention device described in claim 2 , the string- like body smoothly contacts the arc-shaped hook, so that there is little damage. The hook can fix the string-like body more reliably, is easy to manufacture, and can make the fixing means smaller.
[0011]
The invention of claim 3 (for example, FIG. 4) is the seismic isolation structure drop prevention device according to claim 1 or 2 , wherein the sliding member 23 is interposed between the string-like body 21 and the insertion means 31, 32. This is a device for preventing the seismic isolation structure from falling off.
[0012]
According to the fall prevention device of the third aspect, the same effect as that of the first or second aspect can be obtained, and the tensile force applied to the string-like body can be equalized.
[0013]
The invention of claim 4 (for example, FIG. 4) is the seismic isolation structure drop prevention device according to any one of claims 1 to 3 , wherein the cushioning material 22 is interposed between the string-like body 21 and the insertion means 31, 32. This is a device for preventing the seismic isolation structure from falling off.
[0014]
According to the dropout prevention device according to the fourth aspect, the same effects as in the first to third aspects can be obtained, and a buffer material is interposed between the string-like body and the insertion means. The impact load applied to the fixing unit can be reduced.
[0015]
The invention of claim 5 (for example, FIGS. 1 and 3 to 10) is the seismic isolation structure drop prevention device according to any of claims 1 to 4 , wherein the string-like body 21 and the fixing means 11 to 17 are rainwater. The seismic isolation structure drop-off prevention device is characterized by having waterproof means 61 interposed between the lower structure 3 and the upper structure 2 so as to prevent the adhesion of them .
[0016]
According to the fall prevention device of the fifth aspect, the same effects as in the first to fourth aspects can be obtained, and the rain water does not enter because the string-like body and the fixing means are covered with the waterproof means.
[0017]
The invention of claim 6 (for example, FIGS. 1 and 3 to 10) is the seismic isolation structure drop prevention device according to any of claims 1 to 5 , wherein the string-like body 21 and the fixing means 11 to 17 are: interposed between the lower structure and the upper structure covering these, a falling-off prevention device seismic isolation structure, characterized in that it comprises a refractory material 61.
[0018]
According to the dropout prevention device of the sixth aspect, the same effects as in the first to fifth aspects can be obtained, and the string-like body and the fixing means are covered with the bellows made of the fireproof material, so that the fireproof performance is achieved. Have
[0019]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a drop-off prevention device for a seismic isolation structure according to the present invention will be described in detail with reference to the drawings.
[0020]
(First embodiment)
FIG. 1A is a plan sectional view of the present embodiment, and FIG. 1B is a longitudinal sectional view of the present embodiment, showing a state in which the drop-off prevention device is attached to the structure by the fixing means 11. . FIG. 2A is a plan cross-sectional view of a state in which the drop-off preventing device of the present embodiment is attached to the upper structure 2 and the lower structure 3, and FIG. 2B is a vertical cross-sectional view at the A position. In this example, as shown in FIG. 2, the seismic isolation bearing 1 is interposed between the upper structure 2 and the fixed lower structure 3, and the drop-off prevention device is connected to the upper structure 2 via the fixing means 11. And the lower structure 3. A gap in the floor between the upper structure 2 and the lower structure 3 on the foundation side is closed by a telescopic floor slab 4 so that it can pass through.
[0021]
The upper structure 2 and the lower structure 3 are provided with fixing means 11 as shown in FIG. A cylindrical hook 31 and a columnar hook 32 having a circular arc shape in plan view are fixed to the base plate 41 inside the fixing unit 11. The hooks 31 and 32 are formed with a plurality of grooves for hanging the rope. The base plate 41 is fixed to the upper structure 2 or the lower structure 3 with nuts 51 and bolts 52. The base plate 44 and the hooks 31 and 32 may be metal members such as high-strength brass steel.
[0022]
The hooks 31 and 32 are covered with a cover 42, and the cover 42 is provided with an opening through which the string-like body 21 is inserted. The opening provided in the cover 42 has a curved portion 43 that gradually expands from the inside toward the opening. The string-like body 21 is inserted through the opening and fixed to the hooks 31 and 32, and connects the upper structure 2 and the lower structure 3 with a certain deflection. This deflection is set so that the string-like body 21 is tensioned by the deformation of the upper structure 2 to limit the deformation and can be prevented from falling off the lower structure 3.
[0023]
The string-like body 21, aramid fibers as synthetic fibers, polyamide fibers, polyester fibers, polyvinyl alcohol fibers, or the like, and other high-strength fibers such as carbon fibers and glass fibers.
[0024]
A bellows-shaped protective material 61 is attached to the opening having the string-like body 21 and the curved portion 43. The refractory material constituting the bellows-like protective material 61 is composed of a suitable combination of fire-resistant material such as rock wool, ceramic fiber blanket, glass cloth, fire-resistant nonwoven fabric having flexibility, and other waterproof skin material. Has been. Thereby, the drop-off prevention device is provided with a dustproof effect, a waterproof effect, and a fireproof performance. The string-like body 21 is appropriately bundled by a retaining ring 62.
[0025]
(Second Embodiment)
The dropout prevention apparatus of the present invention is obtained by replacing the fixing unit 11 in the dropout prevention apparatus described in Embodiment 1 with the fixing unit 12 shown in FIG.
[0026]
Inside the fixing means 12, two cylindrical hooks 31 are fixed to the base plate 41 along the insertion direction of the string-like body 21. The hooks 31 and 32 are not limited to this example, and a plurality of hooks 31 and 32 may be attached in the direction perpendicular to the insertion of the string-like body 21 in plan view. Other elements are the same as those in the first embodiment, and are omitted.
For this reason, the number of the string-like bodies 21 can be increased easily, and the tensile load can be increased.
[0027]
(Third embodiment)
In the dropout prevention apparatus of the present invention, the fixing unit 11 in the dropout prevention apparatus described in the first embodiment is replaced with a fixing unit 13 shown in FIG.
[0028]
A cylindrical hook 31 is fixed to the base plate 41 inside the fixing unit 13. The hook 31 is covered with a cover 44, and the cover 44 is rotatably attached to the hook 31 by a rotation pin 45 and a bearing 46.
For this reason, even if the upper structure 2 is displaced in the front-rear and left-right directions, the string-like body 21 freely rotates and follows the deformation.
[0029]
(Fourth embodiment)
The dropout prevention device of the present invention is obtained by replacing the fixing unit 13 in the dropout prevention device described in Embodiment 3 with a fixing unit 14 shown in FIG.
[0030]
A semi-cylindrical outer shell hook 33 is rotatably fixed to the outer peripheral portion of the hook 31. Although not shown in the figure, the contact surface between the hook 31 and the outer shell hook 33 is configured to have less friction by Teflon or the like.
For this reason, even if the upper structure 2 is displaced back and forth, and left and right, the string-like body 21 can freely rotate to follow the deformation, and the number of the string-like bodies 21 can be easily increased.
[0031]
(Fifth embodiment)
The dropout prevention apparatus of the present invention is obtained by replacing the fixing unit 11 in the dropout prevention apparatus described in Embodiment 1 with a fixing unit 15 shown in FIG.
[0032]
A base plate 41 is moored in a groove provided in the lower structure 3, and a bearing 47 is interposed on the lower surface of the base plate 41.
For this reason, even if the upper structure 2 is displaced in the front-rear and left-right directions, the string-like body 21 freely rotates and follows the deformation.
[0033]
(Sixth embodiment)
The dropout prevention apparatus of the present invention is obtained by replacing the fixing unit 11 in the dropout prevention apparatus described in Embodiment 1 with a fixing unit 16 shown in FIG.
FIG. 8 is a longitudinal sectional view in which a plurality of fixing means 16 according to the present embodiment are attached to the lower structure 3 and a plurality of fixing means 11 according to the first embodiment are attached to the upper structure 2.
[0034]
A cylindrical hook 31 and columnar hooks 32 a, 32 b, 32 c, 32 d having a circular arc shape in plan view are fixed to the base plate 41 inside the fixing unit 16. The hooks 31, 32a, 32b, 32c, and 32d are formed with a plurality of grooves for hanging ropes.
The string-like body 21 inserted from the left side of the paper is inserted from the opening and fixed to the hooks 31 and 32b, and the string-like body 21 inserted from the right side of the paper has a symmetric configuration. Moreover, the string-like body 21 inserted from the upper side of the paper is inserted from the opening and fixed to the hooks 31 and 32d, and the string-like body 21 inserted from the lower side of the paper has a symmetric configuration.
For this reason, the deformation limit distance of the upper structure 2 and the allowable load of the apparatus can be made different from front to back and left and right by changing the amount of deflection and the number of the front and rear and right and left of the string-like body 21.
[0035]
(Seventh embodiment)
FIG. 9A is a plan sectional view of the present embodiment at the position A, and FIG. 9B is a longitudinal sectional view of the present embodiment, in which the drop-off prevention device is attached to the structure by the fixing means 17. Indicates the state. FIG. 10A is a plan cross-sectional view of the state where the drop-off prevention device of the present embodiment is attached to the upper structure 2 and the lower structure 3, and FIG. 10B is a vertical cross-sectional view at the A position. In this example, as shown in FIG. 10, the seismic isolation bearing 1 is interposed between the upper structure 2 and the fixed lower structure 3, and the drop-off prevention device is connected to the upper structure 2 via the fixing means 17. And the lower structure 3. The periphery of the seismic isolation bearing 1 is covered with a fireproof member 5.
[0036]
A cylindrical hook 31 and a columnar hook 32 having a circular arc shape in cross section are fixed inside the cylindrical fixing unit 17. The hooks 31 and 32 are formed with a plurality of grooves for hanging the rope. The cylindrical fixing unit 17 is fixed to the upper structure 2 or the lower structure 3 with a nut 51 and a bolt 52.
[0037]
The opening of the fixing unit 17 has a curved portion 43 that gradually expands from the inside toward the opening. The string-like body 21 is inserted through the opening and fixed to the hooks 31 and 32, and connects the upper structure 2 and the lower structure 3 with a certain deflection. This deflection is set so that the string-like body 21 is tensioned by the deformation of the upper structure 2 to limit the deformation and can be prevented from falling off the lower structure 3.
[0038]
A bellows-shaped protective material 61 is attached to the opening having the string-like body 21 and the curved portion 43. The refractory material constituting the bellows-like protective material 61 is composed of a suitable combination of fire-resistant material such as rock wool, ceramic fiber blanket, glass cloth, fire-resistant nonwoven fabric having flexibility, and other waterproof skin material. Has been. Thereby, the drop-off prevention device is provided with a dustproof effect, a waterproof effect, and a fireproof performance. The string-like body 21 is appropriately bundled by a retaining ring 62.
[0039]
The dropout prevention device of the present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
The drop-off prevention device may be configured to connect a plurality of upper structures 2 provided on the lower structure 3. Moreover, you may apply to the structure which has a deformation | transformation means similar to the seismic isolation bearing 1. FIG.
The string-like body 21 may be appropriately connected to the upper structure 2 and the lower structure 3 with a spring or a damper in order to prevent wind shaking. The bellows-like protective material 61 may have an effect equivalent to that of a spring using a material having elasticity, or may be a material energized with a viscoelastic material such as lead.
The fixing means 11 and the like are fixed to the upper structure 2 and the lower structure 3 by the nut 51 and the bolt 52. However, the fixing means 11 and the like are not limited thereto, and are fixed to the upper structure 2 or the lower structure 3, and the string-like body 21 The base plate 41 and the cover 42 may be fixed so that the base plate 41 and the cover 42 are in contact with a supporting plate having a surface perpendicular to the insertion direction of the cord 21 and having an opening for insertion of the string-like body 21. In this case, the bearing plate may be formed in a box shape, and a buffer material may be provided on the contact surface between the bearing plate, the base plate 41 and the cover 42. The cross-sectional shape in plan view of the cylindrical fixing unit 17 is not limited to a circle, and may be a square, a triangle, a polygon, an ellipse, or the like. Alternatively, a screw may be cut around the outer periphery of the cylindrical fixing means 17 and fixed to a nut fixed to the upper and lower structures.
In addition, it is needless to say that specific detailed structures can be changed as appropriate.
[0040]
【The invention's effect】
According to the dropout prevention device of the first aspect, in the base isolation structure, the lower structure side and the upper structure side are connected by the string-like body and the fixing means, and the displacement between the lower structure and the upper structure is a predetermined amount. When it reaches, it can be tensioned to prevent the structure from falling off. By using a high-strength fiber rope for the string-like body, it flexibly follows the deformation of the upper structure and does not corrode. Moreover, a large tensile load can be borne by connecting a plurality of string-like bodies.
[0041]
In the seismic isolation structure according to claim 2, since the lower structure side and the upper structure side are connected by the string-like body and the fixing means in the seismic isolation structure, the vertical load acting on the seismic isolation bearing is Even when the support is damaged beyond the allowable value, the string-like body can be tensioned to prevent the structure from falling off. Further, by limiting the horizontal displacement between the lower structure and the upper structure to a predetermined amount, it is possible to prevent the seismic isolation bearing from being damaged. Since the fixing means has a cylindrical shape and is embedded in the upper and lower structures, a small pulling resistance can be obtained. By using a high-strength fiber rope for the string-like body, it flexibly follows the deformation of the upper structure and does not corrode. Moreover, a large tensile load can be borne by connecting a plurality of string-like bodies.
[0042]
According to the drop-off prevention device of the first or second aspect , the same effect as that of the first or second aspect can be obtained, and the string-like body smoothly contacts the arc-shaped hook, so that the damage is small. The hook can fix the string-like body more reliably, is easy to manufacture, and can make the fixing means smaller.
[0043]
According to the fall prevention device of the third aspect, the same effect as that of the first or second aspect can be obtained, and the tensile force applied to the string-like body can be equalized.
[0044]
According to the dropout prevention device of the fourth aspect, the same effects as in the first to third aspects can be obtained, and the buffer member is interposed between the string-like body and the insertion means, so that the string-like body and the fixing member are fixed. The impact load applied to the means can be reduced.
[0045]
According to the dropout prevention device of the fifth aspect, the same effect as in the first to fourth aspects can be obtained, and since the string-like body and the fixing means are covered by the waterproof means, rainwater does not enter.
[0046]
According to the dropout prevention device of the sixth aspect, the same effects as those of the first to fifth aspects can be obtained, and the string-like body and the fixing means are covered with the bellows made of the fireproof material. Have.
[Brief description of the drawings]
FIG. 1 is an example of a drop-off prevention device of the present invention, (a) is a plan sectional view, and (b) is a longitudinal sectional view. (Example 1)
FIGS. 2A and 2B are application examples of the drop-off prevention device of the present invention, in which FIG. 2A is a plan sectional view, and FIG. (Example 1)
FIGS. 3A and 3B show another example of the fixing unit, in which FIG. 3A is a plan sectional view, and FIG. 3B is a longitudinal sectional view. (Example 2)
FIGS. 4A and 4B are still another example of a fixing unit, in which FIG. 4A is a plan sectional view, and FIG. 4B is a longitudinal sectional view. (Example 3)
FIGS. 5A and 5B are still another example of a fixing unit, in which FIG. 5A is a plan sectional view, and FIG. 5B is a longitudinal sectional view. Example 4
6A and 6B show still another example of the fixing unit, in which FIG. 6A is a plan sectional view, and FIG. 6B is a longitudinal sectional view. (Example 5)
7A and 7B show still another example of the fixing unit, in which FIG. 7A is a plan sectional view, and FIG. 7B is a longitudinal sectional view. (Example 6)
FIG. 8 is a longitudinal sectional view of an application example of the dropout prevention device of the present invention. (Example 6)
9A and 9B show another example of the drop-off prevention device of the present invention, where FIG. 9A is a plan sectional view at position A, and FIG. (Example 7)
10A and 10B are application examples of the drop-off prevention device of the present invention, in which FIG. 10A is a plan sectional view, and FIG. (Example 7)
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seismic isolation bearing 2 Upper structure 3 Lower structure 4 Telescopic floor slabs 11-17 Fixing means 21 String-like body 22 Buffer 23 Slide member 31, 32 Hook 33 Outer shell hook 34 Frame member 41 Base plate 42 Cover 43 Convex Portion 44 Rotating cover 45 Pin 46, 47 Bearing 51 Nut 52 Bolt 61 Bellows protective material 62 Retaining ring

Claims (6)

下部構造体と上部構造体との間に介在し、かつ、前記上部構造体を水平方向に移動自在に支持する免震支承を備えた免震構造において、上部構造体が所定量変位したときに緊張して構造物の変位を規制する少なくとも1つの紐状体と、上部構造体及び下部構造体のうちの一方に固定され又は水平面内でのみ回転自在に取り付けられると共に開口部から内部に略水平方向に挿通される紐状体の一方の端部を定着する一方の定着手段と、上部構造体及び下部構造体のうちの他方に固定され又は水平面内でのみ回転自在に取り付けられると共に開口部から内部に略水平方向に挿通される紐状体の他方の端部を定着する他方の定着手段とを有しており一方の定着手段及び他方の定着手段のうちの少なくとも1つには紐状体を挿通するための挿通手段が設けられており、紐状体は一方の定着手段及び他方の定着手段のうちの少なくとも1つの挿通手段に略水平方向に挿通されて下部構造体と上部構造体との間に少なくとも1つの閉鎖輪を形成し、紐状体の一方の端部又は紐状体の他方の端部は下部構造体または上部構造体に揺動自在に連結されており、一方の定着手段及び他方の定着手段のうちの少なくとも1つの挿通手段は、一方の定着手段又は他方の定着手段の内部から開口部にいくにつれて次第に広がった湾曲形状部と、前記一方の定着手段又は他方の定着手段の内部に設けられていると共に前記開口部から内部に略水平方向に挿通された紐状体の一方の端部又は紐状体の他方の端部を定着する少なくとも1つの円弧状のフックとを有していることを特徴とする免震構造物の脱落防止装置。When the upper structure is displaced by a predetermined amount in the seismic isolation structure that is interposed between the lower structure and the upper structure and includes a base isolation support that supports the upper structure so as to be movable in the horizontal direction. At least one string-like body that regulates the displacement of the structure by tension, and is fixed to one of the upper structure and the lower structure, or is rotatably attached only in a horizontal plane, and is substantially horizontal from the opening to the inside. One fixing means for fixing one end portion of the string-like body inserted in the direction, and fixed to the other of the upper structure and the lower structure or attached only rotatably in a horizontal plane and from the opening has the other fixing unit for fixing the other end of the string-like body which is inserted in a substantially horizontal direction therein, the cord-like in at least one of the one of the fixing means and the other fixing means interpolation through means for inserting the body Provided, string-like body is at least one closure between the inserted substantially horizontally into at least one insertion means substructure and superstructure of one of the fixing means and the other fixing means A ring is formed, and one end of the string-like body or the other end of the string-like body is swingably connected to the lower structure or the upper structure , and one of the fixing means and the other fixing means At least one of the insertion means is provided inside the one fixing means or the other fixing means and the curved shape portion that gradually spreads from the inside of the one fixing means or the other fixing means toward the opening, and the one fixing means or the other fixing means. And at least one arc-shaped hook that fixes one end of the string-like body inserted through the opening into the inside in a substantially horizontal direction or the other end of the string-like body. Preventing the seismic isolation structure from dropping Location. 下部構造体と上部構造体との間に介在し、かつ、前記上部構造体を水平方向に移動自在に支持する免震支承を備えた免震構造において、上部構造体が所定量変位したときに緊張して構造物の変位を規制する少なくとも1つの紐状体と、上部構造体及び下部構造体のうちの一方に埋め込まれて固定されると共に開口部から内部に略鉛直方向に挿通される紐状体の一方の端部を定着する筒状形の一方の定着手段と、上部構造体及び下部構造体のうちの他方に埋め込まれて固定されると共に開口部から内部に略鉛直方向に挿通される紐状体の他方の端部を定着する筒状形の他方の定着手段とを有しており、一方の定着手段及び他方の定着手段のうちの少なくとも1つには紐状体を挿通するための挿通手段が設けられており、紐状体は一方の定着手段及び他方の定着手段のうちの少なくとも1つの挿通手段に略鉛直方向に挿通されて下部構造体と上部構造体との間に少なくとも1つの閉鎖輪を形成し、紐状体の一方の端部又は紐状体の他方の端部は下部構造体または上部構造体に揺動自在に連結されており、一方の定着手段及び他方の定着手段のうちの少なくとも1つの挿通手段は、一方の定着手段又は他方の定着手段の内部から開口部にいくにつれて次第に広がった湾曲形状部と、前記一方の定着手段又は他方の定着手段の内部に設けられていると共に前記開口部から内部に略鉛直方向に挿通された紐状体の一方の端部又は紐状体の他方の端部を定着する少なくとも1つの円弧状のフックとを有していることを特徴とする免震構造物の脱落防止装置。When the upper structure is displaced by a predetermined amount in the seismic isolation structure that is interposed between the lower structure and the upper structure and includes a base isolation support that supports the upper structure so as to be movable in the horizontal direction. At least one string-like body that regulates the displacement of the structure by tension, and a string that is embedded and fixed in one of the upper structure and the lower structure, and that is inserted through the opening in a substantially vertical direction. One cylindrical fixing means for fixing one end of the cylindrical body and the fixing means embedded in the other of the upper structure and the lower structure and fixed in the substantially vertical direction through the opening. And the other fixing means having a cylindrical shape for fixing the other end of the string-like body, and the string-like body is inserted into at least one of the one fixing means and the other fixing means. interpolation through means is provided for, string-like body is one of the fixing means Forming at least one closed loop between the lower structure and the upper structure is substantially inserted in the vertical direction to at least one of the insertion means of the fine other fixing means, one end of the string-like body Alternatively, the other end of the string-like member is swingably connected to the lower structure or the upper structure, and at least one insertion means of the one fixing means and the other fixing means is one fixing means. Alternatively, a curved portion that gradually expands from the inside of the other fixing unit toward the opening and the inside of the one fixing unit or the other fixing unit and is inserted into the inside from the opening in a substantially vertical direction. An apparatus for preventing a seismic isolation structure from falling off , comprising: at least one arc-shaped hook for fixing one end of the formed string-like body or the other end of the string-like body . 請求項1又は2に記載の免震構造物の脱落防止装置において、紐状体と挿通手段の間には摺動部材が介在されていることを特徴とする免震構造物の脱落防止装置。 3. The seismic isolation structure drop prevention device according to claim 1, wherein a sliding member is interposed between the string-like body and the insertion means. 請求項1〜のいずれかに記載の免震構造物の脱落防止装置において、紐状体と挿通手段の間には緩衝材が介在されていることを特徴とする免震構造物の脱落防止装置。In the falling-off prevention device seismic isolation structure according to any one of claims 1 to 3 falling-off prevention of the seismic isolation structure, wherein a cushioning material is interposed between the string-like body and the insertion means apparatus. 請求項1〜のいずれかに記載の免震構造物の脱落防止装置において、紐状体と定着手段は雨水の付着を防止するための、これらを覆って下部構造体と上部構造体との間に介在された、防水手段を有することを特徴とする免震構造物の脱落防止装置。The seismic isolation structure drop-off prevention device according to any one of claims 1 to 4 , wherein the string-like body and the fixing means cover the lower structure and the upper structure so as to prevent adhesion of rainwater. A device for preventing a seismic isolation structure from falling off, characterized by having a waterproof means interposed therebetween. 請求項1〜のいずれかに記載の免震構造物の脱落防止装置において、紐状体と定着手段は、これらを覆って下部構造体と上部構造体との間に介在された、耐火性材料を有することを特徴とする免震構造物の脱落防止装置。The seismic isolation structure drop prevention device according to any one of claims 1 to 5 , wherein the string-like body and the fixing means are interposed between the lower structure and the upper structure so as to cover them. A device for preventing a seismic isolation structure from falling out, characterized by having a material.
JP2001021703A 2001-01-18 2001-01-30 Seismic isolation structure dropout prevention device Expired - Fee Related JP4200660B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2001021703A JP4200660B2 (en) 2001-01-18 2001-01-30 Seismic isolation structure dropout prevention device
PCT/JP2002/007215 WO2004007991A1 (en) 2001-01-18 2002-07-16 Fallout prevention device of base isolation structure

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001-10040 2001-01-18
JP2001010040 2001-01-18
JP2001021703A JP4200660B2 (en) 2001-01-18 2001-01-30 Seismic isolation structure dropout prevention device
PCT/JP2002/007215 WO2004007991A1 (en) 2001-01-18 2002-07-16 Fallout prevention device of base isolation structure

Publications (2)

Publication Number Publication Date
JP2002286090A JP2002286090A (en) 2002-10-03
JP4200660B2 true JP4200660B2 (en) 2008-12-24

Family

ID=32314762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001021703A Expired - Fee Related JP4200660B2 (en) 2001-01-18 2001-01-30 Seismic isolation structure dropout prevention device

Country Status (2)

Country Link
JP (1) JP4200660B2 (en)
WO (1) WO2004007991A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4200660B2 (en) * 2001-01-18 2008-12-24 敏雄 藤岡 Seismic isolation structure dropout prevention device
JP2006249842A (en) * 2005-03-11 2006-09-21 Sho Bond Constr Co Ltd Connecting band
JP4744307B2 (en) * 2006-01-19 2011-08-10 濱中ナット株式会社 Mechanical property imparting structure
JP4719625B2 (en) * 2006-06-06 2011-07-06 ショーボンド建設株式会社 Installation method of bridge fall prevention device
JP2008174912A (en) * 2007-01-16 2008-07-31 Bridgestone Corp Bridge-fall prevention device
JP5317359B2 (en) * 2009-06-09 2013-10-16 東京ファブリック工業株式会社 Fall prevention device for track girder for straddle type monorail
JP5988851B2 (en) * 2012-12-05 2016-09-07 荏原実業株式会社 Anti-vibration stand
ITRE20130026A1 (en) * 2013-04-12 2013-07-12 Innocenzo Becci DISSIPATIVE SLIDING SEISMIC CONNECTION WITH DYNAMIC ADAPTIVE ADJUSTMENT OF CAR COMPENSATED
KR102386263B1 (en) * 2019-12-23 2022-04-13 김남영 Seismic isolation structure using rope foundation
CN112144374A (en) * 2020-09-16 2020-12-29 同济大学 Self-resetting ring spring inhaul cable buffering system, support and bridge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3607021B2 (en) * 1996-11-26 2005-01-05 神鋼鋼線工業株式会社 Connecting cable
JP2001200890A (en) * 2000-01-18 2001-07-27 Bando Chem Ind Ltd Base isolation bed
JP2001303516A (en) * 2000-04-19 2001-10-31 Tokai Rubber Ind Ltd Shift restriction device for bridge
JP4483046B2 (en) * 2000-06-19 2010-06-16 敏雄 藤岡 Seismic isolation structure displacement limiting device
JP3440307B2 (en) * 2000-09-22 2003-08-25 ショーボンド建設株式会社 Girder fall prevention device
JP4200660B2 (en) * 2001-01-18 2008-12-24 敏雄 藤岡 Seismic isolation structure dropout prevention device

Also Published As

Publication number Publication date
JP2002286090A (en) 2002-10-03
WO2004007991A1 (en) 2004-01-22

Similar Documents

Publication Publication Date Title
JP4200660B2 (en) Seismic isolation structure dropout prevention device
JP2944217B2 (en) Vibration suppression coupling device for earthquake resistance of structures
US3814357A (en) Steel spring insulator
CN116247583A (en) Shock-resistant cable bridge
JP2013040494A (en) Ceiling part suspension device
CN110241746A (en) Cantilever truss type open type can restore flexible protective hangar tunnel
KR102375313B1 (en) Earthquake-Resistant Light Tower
JPH09242019A (en) Girder fall preventing construction
CN210380085U (en) Cable anti-seismic support for electric power system
JP3714772B2 (en) Piping support device
JP2009216238A (en) Base isolation device, sliding support, and base isolation structure
CN215482251U (en) Stay cable lever mass damping device
JP4483046B2 (en) Seismic isolation structure displacement limiting device
JP2013040493A (en) Ceiling part suspension device
KR102269284B1 (en) Lightning protection structure of cable-stayed bridges
JP4449408B2 (en) Locking suppression device for seismic isolation structures
CN202323789U (en) Roadbed wind-sand-proof facility capable of automatically adjusting wind-sand-resisting direction in gobi gale region
JPH05184039A (en) Cable supporting structure
JP7370907B2 (en) Seismic isolation duct device
JP3669251B2 (en) Seismic isolation fireproof structure
JP2001164584A (en) Seismic isolation equipment for lightweight building or mechanical facility
JP4440839B2 (en) Joint cover device
JP2560992Y2 (en) Fall prevention device for elastically supported seismic isolation structures
JP3630909B2 (en) Exterior plate support device for building structures
KR102588349B1 (en) Rope tensioner for elevator governor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050609

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20071010

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071023

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071220

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080916

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080929

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111017

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121017

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121017

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131017

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

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