JP4048878B2

JP4048878B2 - Manufacturing method of upper and lower armor of seismic isolation device

Info

Publication number: JP4048878B2
Application number: JP2002241137A
Authority: JP
Inventors: 豊長谷川; 毅澤田; 照夫荒水
Original assignee: Oiles Corp
Current assignee: Oiles Corp
Priority date: 2002-08-21
Filing date: 2002-08-21
Publication date: 2008-02-20
Anticipated expiration: 2022-08-21
Also published as: JP2004076907A

Description

【０００１】
【発明の属する技術分野】
本発明は、ビル、高架高速道路、橋若しくは戸建家屋等の建築物の下部構造物である例えば基礎と上部構造物との間に介在されて、地震、交通振動等による基礎の振動の上部構造物への伝達を低減して、上部構造物の倒壊等を防止する免震装置に用いられる上沓及び下沓の製造方法に関する。
【０００２】
【発明が解決しようとする課題】
免震装置として、上方に向かって凹状の摺動面を有した下沓を下部構造物に、上部構造物には下方に向かって凹状の摺動面を有した上沓を夫々取り付けて、下沓と上沓との間に摺動体を各摺動面に摺動自在に当接させて介在させたものが知られている。
【０００３】
そしてこの種の免震装置における下沓及び上沓は、多くは一体鋳造されて、その後、必要な個所に切削が施されて製造されている。
【０００４】
ところで、一体鋳造品である下沓及び上沓等の場合、その重量が大きくなり、その搬送、据え付け等において、多くの時間、手間を要し、その上危険な作業を伴う虞があり、しかも、それの製造において切削工程を要するため、これによっても上記と相俟って多くの時間、手間を要し、結局、コストアップを招来することになる。
【０００５】
これに対して、特開２０００−２７９３５号公報に記載のように、曲面を有する金属薄板と厚板とを重ね合わせて、金属薄板と厚板との間の隙間にグラウト材を流し込んでグラウト固化層を形成して上沓を製造する技術が提案されており、斯かる技術によれば、上沓を軽量化できてその搬送、据え付けが容易となり、上沓の製造のための多くの時間、手間を要する切削工程を省くことができる。
【０００６】
ところで、公報に記載の技術では、金属薄板と厚板とを水平に設置した状態で金属薄板と厚板との間の空間にグラウト材を流し込んで上沓を形成するために、無収縮性のグラウト材を用いないとグラウト材の固化後に厚板の下面に隙間が生じる虞があり、この隙間をもった上沓で上部構造物の荷重を支持すると、金属薄板の曲面を所望に維持できないこととなり、意図した通りの支持機能、免震機能を得ることが困難となる。斯かる問題は、公報に記載の技術によれば、上沓に限って生じるのではなく、下沓についても同様に生じ得るのである。
【０００７】
本発明は前記諸点に鑑みてなされたものであって、その目的とするところは、多くの時間、手間を要する切削工程を省くことができてコストの低減を図り得る上に、充填材として無収縮性のグラウト材を用いなくても支持機能、免震機能を発揮する上で不都合な隙間を充填材の固化後に生じさせることがない免震装置の上沓及び下沓の製造方法を提供することにある。
【０００８】
【課題を解決するための手段】
上方に向かって断面円弧凹状の下側荷重受面を有した下沓と、下方に向かって断面円弧凹状の上側荷重受面を有した上沓と、下沓と上沓との間に介在された介在体とを具備しており、上沓及び下沓のうちの少なくとも一方が、断面円弧状の凹板部及びこの凹板部に一体な環状の側板部を有していると共に板状体からなる皿状部材と、この皿状部材の側板部に固着された平板状の蓋部材と、皿状部材と蓋部材との間の空間に充填された充填体とを具備しており、下沓に介在体を介して上沓を移動自在に支持する免震装置のための前記の上沓及び下沓のうちの少なくとも一方の、本発明による第一の態様の製造方法は、充填体のための充填材を供給する開口を側板部に有した皿状部材とこの皿状部材の側板部に固着された平板状の蓋部材との組み合わせ体を準備し、この組み合わせ体の皿状部材と蓋部材との間の空間に開口から充填材を供給して当該空間に充填材を充填し、空間での充填材の少なくとも固化中には組み合わせ体を側板部の開口が上方に位置するように直立させる。
【０００９】
第一の態様の製造方法によれば、空間での充填材の少なくとも固化中には組み合わせ体を側板部の開口が上方に位置するように直立させるために、固化時の充填材の収縮の影響が開口側の側板部の近傍に限定されることになり、皿状部材と蓋部材との間の空間に充填された充填材は皿状部材と蓋部材とに密に接触して固化することになる結果、荷重を受ける皿状部材と蓋部材との間には隙間が実質的に生じなくなり、而して、充填材として無収縮性のグラウト材を用いなくても不都合な隙間を充填材の固化後に生じさせることがなく、これにより支持機能、免震機能を所望に発揮でき、しかも、切削工程を省くことができるためにコストの低減を図り得る。
【００１０】
本発明の製造方法では、その第二の態様の製造方法のように、組み合わせ体を直立させた後、開口から空間への充填材の供給を開始しても、その第三の態様の製造方法のように、空間への充填材の充填後に組み合わせ体を直立させてもよく、また、その第四の態様の製造方法のように、充填材の固化完了まで組み合わせ体の直立状態を維持してもよい。
【００１１】
第二の態様の製造方法によれば、充填開始前に組み合わせ体を直立させるために、充填材が充填されていない軽量の組み合わせ体を直立させることとなる結果、作業が容易となり好ましい。
【００１２】
本発明の製造方法によって製造されるものは、その第五の態様の製造方法のように、上沓であっても、その第六の態様の製造方法のように、下沓であってもよい。
【００１３】
本発明では、その第七の態様の製造方法のように、開口が充填材で満たされるまで充填材を供給するのがよいが、これに代えて、その第八の態様の製造方法のように、中空の囲繞体を側板部に有した皿状部材を用いて、充填材を囲繞体の中空部及び開口を介して空間に供給すると共に、囲繞体の中空部が充填材で満たされるまで充填材を供給するようにしてもよい。
【００１４】
第八の態様の製造方法によれば、充填材として収縮性のグラウト材を用いた場合にも、開口側の側板部の近傍に生じ得る空洞をできるだけ少なくできて、充填材の収縮の影響を可及的に少なくし得る。
【００１５】
第八の態様の製造方法においては、本発明の第九の態様の製造方法のように、皿状部材と蓋部材との間の空間に満たす充填材の固化時の収縮量に基づいて決定された量の充填材を囲繞体の中空部に満たすようにするとよく、斯かる方法を採用することにより、開口側の側板部の近傍に空洞を生じさせないようにし得る。
【００１６】
充填材としては、無収縮性のグラウト材を用いてもよいが、本発明の第十の態様の製造方法のように、収縮性のグラウト材を用いてもよい。
【００１７】
本発明の製造方法では、その第十一の態様の製造方法のように、充填材の固化後、直立状態を解除する。
【００１８】
本発明において、介在体は、その第十二の態様の製造方法のように、下沓の下側荷重受面の曲率と同一の曲率を有し、下側荷重受面に摺動自在に接する摺動下面を備えると共に、上沓の上側荷重受面の曲率と同一の曲率を有し、上側荷重受面に摺動自在に接する摺動上面を備えた摺動体であってもよいが、本発明はこれに限定されず、介在体は、ローラ又は球であってもよい。介在体が摺動体であると、免震装置は滑りを用いた滑り免震装置となり、介在体がローラ又は球であると、免震装置は転がり免震装置となる。
【００１９】
皿状部材としては、へら絞り成形又はプレス成形により一体形成されてなるものであってもよく、また、耐候性鋼板から一体形成されてなるものであってもよく、更には、ステンレス鋼板又は表面に銅若しくは亜鉛メッキを施した剛性の金属板、好ましくは鋼板からなっていてもよい。皿状部材を構成する板状体の厚みとしては、好ましい例として、１．８ｍｍから３．２ｍｍ程度を挙げることができが、本発明はこれに限定されず、プレス成形又はへら絞り成形等が可能であって、上記の目的を達成し得るならば、これ以外であってもよい。
【００２０】
蓋部材としては、組み合わせ体の直立状態を維持できる上に、上部構造物の荷重を支持する場合に変形等の生じない程度の厚み、強度を有している鋼板、好ましくは耐候性鋼板等からなるものであればよい。
【００２１】
次に本発明及びその実施の形態を、図を参照して更に詳細に説明する。なお、本発明はこれら実施の形態に何等限定されないのである。
【００２２】
【発明の実施の形態】
まず、本発明の製造方法の一実施の形態で製造された下沓１及び上沓２を用いた免震装置３の一例を説明する。図１及び図２において、本例の免震装置３は、上方に向かって断面円弧凹状の下側荷重受面としての下側摺動面４を有して、建物の下部構造物としての基礎５に固定される下沓１と、下方に向かって断面円弧凹状の上側荷重受面としての上側摺動面６を有して、建物の上部構造物７に固定される上沓２と、下沓１の下側摺動面４の曲率（曲率半径Ｒ）と同一の曲率（曲率半径Ｒ）を有し、下側摺動面４に摺動自在に接する摺動下面８を備えると共に、上沓２の上側摺動面６の曲率（曲率半径Ｒ）と同一の曲率（曲率半径Ｒ）を有し、上側摺動面６に摺動自在に接する摺動上面９を備えて、下沓１と上沓２との間に介在された介在体である摺動体１０とを具備している。
【００２３】
下沓１は、耐候性鋼板であるステンレス板をプレス成形により一体形成して製造されてなると共に、断面円弧状であって円盤状の凹板部１３及び凹板部１３の周縁に一体形成されて凹板部１３に一体な環状、本例では円筒状の側板部１４を有している皿状部材１５と、板状体からなる皿状部材１５の側板部１４の端面に溶接等により固着された平板状であって方形の蓋部材１６と、皿状部材１５と蓋部材１６との間の空間に充填されて固化された充填体１７とを具備しており、凹板部１３に下側摺動面４が設けられている。
【００２４】
下沓１は、基礎５に植設された複数のアンカーボルト１９によりその蓋部材１６で基礎５に固定されている。
【００２５】
充填体１７は、凹板部１３及び側板部１４の夫々の内面２３と蓋部材１６の一方の面２４との間の空間に充填されて固化された充填材としてのグラウト材からなる。
【００２６】
下沓１と同様に、上沓２は、耐候性鋼板であるステンレス板をプレス成形により一体形成して製造されてなると共に、断面円弧状であって円盤状の凹板部３１及び凹板部３１の周縁に一体形成されて凹板部３１に一体な環状、本例では円筒状の側板部３２を有している皿状部材３３と、板状体からなる皿状部材３３の側板部３２の端面に溶接等により固着された平板状であって方形の蓋部材３４と、皿状部材３３と蓋部材３４との間の空間に充填されて固化された充填体３５とを具備しており、凹板部３１に上側摺動面６が設けられている。
【００２７】
上沓２は、上部構造物７に複数のボルト３６によりその蓋部材３４で固定されている。
【００２８】
充填体３５は、凹板部３１及び側板部３２の夫々の内面３７と蓋部材３４の一方の面３８との間の空間に充填されて固化された充填材としてのグラウト材からなる。
【００２９】
摺動体１０は、下沓１と上沓２との間に適度な隙間が生じるような高さをもって剛体から形成されており、その径ｄは、下側摺動面４及び上側摺動面６の径Ｄよりも十分に小さい。
【００３０】
本例では、下側摺動面４及び上側摺動面６並びに摺動下面８及び摺動上面９の夫々は、球面の一部からなっており、夫々の曲率半径は、互いに同一である。
【００３１】
以上の免震装置３では、下沓１に摺動体１０を介して上沓２を水平方向Ｈに移動自在に支持して、これにより、常時においては、摺動体１０が下側摺動面４及び上側摺動面６のほぼ中央に位置されて、上部構造物７の鉛直荷重を受け止めて、上部構造物７を基礎５上で支持している。そして、風等により多少の水平力が上部構造物７に付加されても又は小さな地震等により多少の水平力が基礎５に付加されても、下側摺動面４及び上側摺動面６に対する摺動下面８及び摺動上面９の面接触による摩擦抵抗で、基礎５に対して上部構造物７が水平方向Ｈに相対的に揺れることがない。
【００３２】
地震動等により大きな水平力が基礎５に付加されると、下側摺動面４及び上側摺動面６に対し摺動下面８及び摺動上面９の滑りが生じて、図３に示すように、摺動体１０が揺動されつつ基礎５に対して上部構造物７が水平方向Ｈに相対的に振動される。このような振動において摺動体１０は、図１に示すような位置に復帰されようとし、しかも、基礎５の水平方向Ｈの移動に基づく上部構造物７の振動エネルギは、下側摺動面４及び上側摺動面６の夫々と摺動下面８及び摺動上面９の夫々との間の摩擦とにより吸収されて減衰される。したがって、地震等の大きな水平力が基礎５に付加されても、上部構造物７が倒壊されるような事態を防ぎ得る。
【００３３】
次に免震装置３に用いられる下沓１の製造方法を説明すると、まず、図４に示すように、充填体１７のための充填材、例えば収縮性のグラウト材５１を供給する開口５２を側板部１４に有した皿状部材１５と皿状部材１５の側板部１４の端面に溶接等により固着された平板状の蓋部材１６との組み合わせ体５３を準備し、斯かる組み合わせ体５３を、同じく図４に示すように、側板部１４の開口５２が上方に位置するように直立させた後、円形の貫通孔からなる開口５２にグラウト材５１の供給用のホース５４を接続して、開口５２から組み合わせ体５３の皿状部材１５と蓋部材１６との間の空間５５へのグラウト材５１の供給を開始し、空間５５に開口５２からグラウト材５１を供給して空間５５にグラウト材５１を順次充填し、開口５２がグラウト材５１で満たされるまでグラウト材５１を供給する。空間５５に加えて開口５２もグラウト材５１で満たされた後に、グラウト材５１の供給を停止して、その後、組み合わせ体５３の直立状態を維持したままグラウト材５１を固化させ、そして、グラウト材５１の固化中には組み合わせ体５３を側板部１４の開口５２が上方に位置するように直立させ、グラウト材５１の固化完了まで組み合わせ体５３の直立状態を維持し、グラウト材５１の固化完了後、組み合わせ体５３の直立状態を解除し、こうして固化されたグラウト材５１からなる充填体１７が空間５５に形成された下沓１を製造し、この製造後、下沓１を基礎５上に載置して免震装置３に用いる。
【００３４】
上記のようにして製造された下沓１では、グラウト材５１の固化時の収縮に起因する空洞５６（図１参照）が開口５２側の側板部１４の近傍に生じ得るが、斯かる空洞５６は、下側摺動面４の中央部から十分に離れているために、免震装置３の支持機能及び免震機能に実質的に影響を与えない。
【００３５】
上沓２も、下沓１と同様にして製造することができる。
【００３６】
以上の製造方法では、グラウト材５１の固化中には組み合わせ体５３を側板部１４の開口５２が上方に位置するように直立させるために、固化時のグラウト材５１の収縮の影響が開口５２側の側板部１４の近傍に限定されることになり、皿状部材１５と蓋部材１６との間の空間５５に充填されたグラウト材５１は皿状部材１５と蓋部材１６とに密に接触して固化することになる結果、荷重を受ける皿状部材１５と蓋部材１６との間には隙間が実質的に生じなくなり、而して、グラウト材５１として無収縮性のグラウト材を用いなくても不都合な隙間をグラウト材５１の固化後に生じさせることがなく、これにより支持機能、免震機能を所望に発揮でき、しかも、切削工程を省くことができるためにコストの低減を図り得る上に、充填開始前に組み合わせ体５３を直立させるために、グラウト材５１が充填されていない軽量の組み合わせ体５３を直立させることとなる結果、作業が容易となる。
【００３７】
ところで、上記の製造方法では、開口５２に直接にホース５４を接続して開口５２を介して空間５５にグラウト材５１を充填したが、これに代えて、図５に示すように、開口５２を囲んだ中空の囲繞体としての管６１を側板部１４に有した皿状部材１５を用いて下沓１を製造してもよい。即ち、図５に示すように、管６１が側板部１４に溶接等により固着、好ましくは仮止めされた皿状部材１５と皿状部材１５の側板部１４に固着された平板状の蓋部材１６との組み合わせ体５３を準備し、組み合わせ体５３を側板部１４の開口５２が上方に位置するように直立させた後、管６１にグラウト材５１の供給用のホース５４を接続して、組み合わせ体５３の直立状態を維持したまま、グラウト材５１を管６１の中空部６２及び開口５２を介して空間５５に供給すると共に、図６に示すように、管６１の中空部６２がグラウト材５１で満たされるまでグラウト材５１を供給し、以後、前記と同様にして下沓１を製造する。斯かる製造方法の場合には、空間５５に満たすグラウト材５１の固化時の収縮量に基づいて決定された量のグラウト材５１を管６１の中空部６２に満たすと、空洞５６（図１参照）の生起をなくすことができる。そして、グラウト材５１の固化後、必要に応じて図７に示すように仮止めされた管６１を側板部１４から除去するとよい。上沓２も下沓１と同様にして製造することができる。
【００３８】
上記のいずれの製造方法でも、空間５５へのグラウト材５１の充填後であってグラウト材５１が固化する前に、好ましくは、空間５５へのグラウト材５１の充填直後に、組み合わせ体５３を直立させてもよく、また、グラウト材５１の固化後、必要に応じて開口５２を封止部材で閉じるようにしてもよい。
【００３９】
【発明の効果】
本発明によれば、多くの時間、手間を要する切削工程を省くことができてコストの低減を図り得る上に、充填材として無収縮性のグラウト材を用いなくても支持機能、免震機能を発揮する上で不都合な隙間を充填材の固化後に生じさせることがない免震装置の上沓及び下沓の製造方法を提供することができる。
【図面の簡単な説明】
【図１】本発明の製造方法で製造された上沓及び下沓を用いた免震装置の実施の形態の好ましい例の断面図である。
【図２】図１に示すＩＩ−ＩＩ線断面図である。
【図３】図１に示す例の動作説明図である。
【図４】図１に示す上沓及び下沓の例の製造方法の一例の説明図である。
【図５】図１に示す上沓及び下沓の例の製造方法の他の例の説明図である。
【図６】図５の例の説明図である。
【図７】図５の例の説明図である。
【符号の説明】
１下沓
２上沓
３免震装置
４下側摺動面
５基礎
６上側摺動面
７上部構造物
１０摺動体
１３凹板部
１４側板部
１５皿状部材
１６蓋部材
１７充填体[0001]
BACKGROUND OF THE INVENTION
The present invention is a lower structure of a building such as a building, an elevated highway, a bridge or a detached house, for example, interposed between a foundation and an upper structure, and an upper part of the vibration of the foundation due to an earthquake, traffic vibration, etc. The present invention relates to a method for manufacturing an upper arm and a lower arm used in a seismic isolation device that reduces the transmission to the structure and prevents the collapse of the upper structure.
[0002]
[Problems to be solved by the invention]
As the seismic isolation device, a lower rod having a concave sliding surface upward is attached to the lower structure, and an upper rod having a concave sliding surface is attached to the upper structure, respectively. There is known one in which a sliding body is slidably brought into contact with each sliding surface between a collar and an upper collar.
[0003]
And most of the lower and upper rods in this type of seismic isolation device are manufactured by integrally casting and then cutting at necessary places.
[0004]
By the way, in the case of the lower casting and upper casting that are integrally cast products, the weight thereof becomes large, and it takes a lot of time and labor in its transportation, installation, etc. Since the manufacturing process requires a cutting process, this also requires a lot of time and labor in combination with the above, resulting in an increase in cost.
[0005]
On the other hand, as described in Japanese Patent Application Laid-Open No. 2000-27935, a thin metal plate and a thick plate having a curved surface are overlapped, and a grout material is poured into a gap between the thin metal plate and the thick plate to solidify the grout. Techniques have been proposed for manufacturing the upper arm by forming a layer, and according to such technology, the upper arm can be reduced in weight and can be easily transported and installed. A time-consuming cutting process can be saved.
[0006]
By the way, in the technique described in the publication, in order to form the upper ridge by pouring the grout material into the space between the thin metal plate and the thick plate in a state where the thin metal plate and the thick plate are installed horizontally, there is no shrinkage. If the grout material is not used, a gap may occur on the lower surface of the thick plate after the grout material is solidified. If the load on the upper structure is supported by the upper arm with this gap, the curved surface of the thin metal plate cannot be maintained as desired. Therefore, it is difficult to obtain the intended support function and seismic isolation function. According to the technology described in the publication, such a problem is not limited to the upper eyelid but can occur similarly to the lower eyelid.
[0007]
The present invention has been made in view of the above-mentioned points. The object of the present invention is to eliminate a time-consuming and labor-consuming cutting process, reduce costs, and eliminate the need for a filler. Provided is a method for manufacturing upper and lower heels of a seismic isolation device that does not cause an inconvenient gap after the filler is solidified without exhibiting a support function and a seismic isolation function without using a shrinkable grout material. There is.
[0008]
[Means for Solving the Problems]
It is interposed between a lower rod having a lower load receiving surface having an arc-shaped concave section upward, an upper rod having an upper load receiving surface having an arc-shaped concave portion facing downward, and the lower rod and the upper rod. And at least one of the upper collar and the lower collar has a concave plate portion having an arc cross section and an annular side plate portion integrated with the concave plate portion, and a plate-like body. A plate-like member made of a flat plate-like lid member fixed to a side plate portion of the plate-like member, and a filling body filled in a space between the plate-like member and the lid member. The manufacturing method according to the first aspect of the present invention for at least one of the upper and lower eyelids for a seismic isolation device that movably supports the upper eyelid via an intervening body, Combination of a plate-like member having an opening for supplying a filler for the side plate on the side plate and a flat lid member fixed to the side plate of the plate-like member Prepare a fitting body, supply a filler from the opening to the space between the dish-shaped member and the lid member of the combined body, fill the space with the filler, and at least during solidification of the filler in the space The combined body is erected so that the opening of the side plate portion is located above.
[0009]
According to the manufacturing method of the first aspect, during the solidification of the filler in the space, in order to make the combination stand upright so that the opening of the side plate portion is located above, the influence of the shrinkage of the filler during the solidification Is limited to the vicinity of the side plate portion on the opening side, and the filler filled in the space between the dish-shaped member and the lid member is in close contact with the dish-shaped member and the lid member to be solidified. As a result, there is substantially no gap between the plate-like member that receives the load and the lid member, and therefore there is no need to use a non-shrinkable grout material as the filler. Therefore, the support function and the seismic isolation function can be exhibited as desired, and the cutting process can be omitted, so that the cost can be reduced.
[0010]
In the manufacturing method of the present invention, as in the manufacturing method of the second aspect, even if the supply of the filler from the opening to the space is started after the combination is upright, the manufacturing method of the third aspect As described above, the combination may be erected after filling the filler into the space, and the combination is kept upright until the solidification of the filler is completed as in the fourth aspect of the manufacturing method. Also good.
[0011]
According to the manufacturing method of the second aspect, in order to erect the combined body before the start of filling, the lightweight combined body not filled with the filler is erected. As a result, the operation is facilitated, which is preferable.
[0012]
What is manufactured by the manufacturing method of the present invention may be upper iron as in the manufacturing method of the fifth aspect, or may be lower iron as in the manufacturing method of the sixth aspect. .
[0013]
In the present invention, the filler is preferably supplied until the opening is filled with the filler as in the manufacturing method of the seventh aspect, but instead, as in the manufacturing method of the eighth aspect. The filling material is supplied to the space through the hollow portion and the opening of the surrounding body using the dish-like member having the hollow surrounding body on the side plate portion, and is filled until the hollow portion of the surrounding body is filled with the filling material. A material may be supplied.
[0014]
According to the manufacturing method of the eighth aspect, even when a shrinkable grout material is used as the filler, the number of cavities that can be generated in the vicinity of the side plate portion on the opening side can be reduced as much as possible, and the influence of the shrinkage of the filler can be reduced. It can be as small as possible.
[0015]
In the manufacturing method of the eighth aspect, as in the manufacturing method of the ninth aspect of the present invention, it is determined based on the shrinkage amount at the time of solidification of the filler filling the space between the dish-like member and the lid member. It is preferable to fill the hollow portion of the enclosure with a sufficient amount of the filler, and by adopting such a method, it is possible to prevent a cavity from being generated in the vicinity of the side plate portion on the opening side.
[0016]
A non-shrinkable grout material may be used as the filler, but a shrinkable grout material may be used as in the manufacturing method of the tenth aspect of the present invention.
[0017]
In the manufacturing method of the present invention, as in the manufacturing method of the eleventh aspect, after the filler is solidified, the upright state is released.
[0018]
In the present invention, the intervening body has the same curvature as that of the lower load receiving surface of the lower rod as in the manufacturing method of the twelfth aspect, and is slidably in contact with the lower load receiving surface. A sliding body having a sliding lower surface and a curvature having the same curvature as that of the upper load receiving surface of the upper collar and slidably contacting the upper load receiving surface may be used. The invention is not limited to this, and the inclusion may be a roller or a sphere. If the intervening body is a sliding body, the seismic isolation device is a sliding seismic isolation device using sliding, and if the inclusion is a roller or a ball, the seismic isolation device is a rolling seismic isolation device.
[0019]
The dish-like member may be integrally formed by spatula drawing or press molding, may be integrally formed from a weather-resistant steel plate, and further, a stainless steel plate or surface It may be made of a rigid metal plate, preferably a steel plate, plated with copper or zinc. As a preferable example of the thickness of the plate-like member constituting the dish-like member, about 1.8 mm to 3.2 mm can be mentioned, but the present invention is not limited to this, and press forming or spatula drawing forming or the like is possible. Others are possible as long as they are possible and can achieve the above object.
[0020]
As the lid member, a steel plate having a thickness and strength that does not cause deformation or the like when supporting the load of the upper structure in addition to being able to maintain the upright state of the combined body, preferably a weathering steel plate, etc. What is necessary.
[0021]
Next, the present invention and its embodiments will be described in more detail with reference to the drawings. The present invention is not limited to these embodiments.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
First, an example of the seismic isolation device 3 using the lower rod 1 and the upper rod 2 manufactured in the embodiment of the manufacturing method of the present invention will be described. 1 and 2, the seismic isolation device 3 of the present example has a lower sliding surface 4 as a lower load receiving surface having a concave section in an arc shape upward, and serves as a foundation as a substructure of a building. A lower rod 1 fixed to 5, an upper sliding surface 6 as an upper load receiving surface having an arc-shaped concave section downward, and an upper rod 2 fixed to an upper structure 7 of the building, The lower sliding surface 4 has a curvature (curvature radius R) that is the same as that of the lower sliding surface 4 and includes a lower sliding surface 8 that is slidably in contact with the lower sliding surface 4. It has a sliding upper surface 9 that has the same curvature (curvature radius R) as the curvature (curvature radius R) of the upper sliding surface 6 of the flange 2 and is slidably in contact with the upper sliding surface 6. And the upper body 2 are provided with a sliding body 10 which is an interposed body.
[0023]
The lower arm 1 is manufactured by integrally forming a stainless steel plate, which is a weather-resistant steel plate, by press molding, and is formed integrally with the disk-shaped concave plate portion 13 and the peripheral edge of the concave plate portion 13. In this example, the plate-like member 15 having the annular side plate portion 14 that is integral with the concave plate portion 13 and the end surface of the side plate portion 14 of the plate-like member 15 made of a plate-like member are fixed by welding or the like. A flat and square lid member 16 and a filling body 17 filled and solidified in a space between the dish-like member 15 and the lid member 16. A side sliding surface 4 is provided.
[0024]
The lower rod 1 is fixed to the foundation 5 with a cover member 16 by a plurality of anchor bolts 19 planted on the foundation 5.
[0025]
The filling body 17 is made of a grout material as a filling material that is filled and solidified in a space between the inner surface 23 of each of the concave plate portion 13 and the side plate portion 14 and one surface 24 of the lid member 16.
[0026]
Similar to the lower rod 1, the upper rod 2 is manufactured by integrally forming a stainless steel plate, which is a weather-resistant steel plate, by press forming, and has a circular arc-shaped cross-section with a disk-shaped concave plate portion 31 and a concave plate portion. An annular plate integrally formed with the peripheral edge of 31 and integrated with the concave plate portion 31, in this example, a dish-like member 33 having a cylindrical side plate portion 32, and a side plate portion 32 of the dish-like member 33 made of a plate-like body. A flat plate-shaped lid member 34 fixed to the end surface of the plate by welding or the like, and a filling body 35 filled in the space between the plate-like member 33 and the lid member 34 and solidified. The upper sliding surface 6 is provided on the concave plate portion 31.
[0027]
The upper collar 2 is fixed to the upper structure 7 with a plurality of bolts 36 with a lid member 34.
[0028]
The filler 35 is made of a grout material as a filler that is filled and solidified in a space between the inner surface 37 of each of the concave plate portion 31 and the side plate portion 32 and one surface 38 of the lid member 34.
[0029]
The sliding body 10 is formed of a rigid body with such a height that an appropriate gap is generated between the lower rod 1 and the upper rod 2, and the diameter d thereof is defined by the lower sliding surface 4 and the upper sliding surface 6. Is sufficiently smaller than the diameter D.
[0030]
In this example, each of the lower sliding surface 4 and the upper sliding surface 6, the sliding lower surface 8 and the sliding upper surface 9 is formed of a part of a spherical surface, and the respective radii of curvature are the same.
[0031]
In the seismic isolation device 3 described above, the upper rod 2 is supported by the lower rod 1 via the sliding member 10 so as to be movable in the horizontal direction H, so that the sliding member 10 is always in the lower sliding surface 4. The upper structure 7 is supported on the foundation 5 by receiving the vertical load of the upper structure 7 and being positioned substantially at the center of the upper sliding surface 6. Even if a slight horizontal force is applied to the upper structure 7 due to wind or the like or a slight horizontal force is applied to the foundation 5 due to a small earthquake or the like, the lower sliding surface 4 and the upper sliding surface 6 are applied. The upper structure 7 does not sway relatively in the horizontal direction H with respect to the foundation 5 due to frictional resistance caused by surface contact between the sliding lower surface 8 and the sliding upper surface 9.
[0032]
When a large horizontal force is applied to the foundation 5 due to seismic motion or the like, sliding of the sliding lower surface 8 and the sliding upper surface 9 occurs with respect to the lower sliding surface 4 and the upper sliding surface 6, as shown in FIG. The upper structure 7 is vibrated relative to the base 5 in the horizontal direction H while the sliding body 10 is swung. In such vibration, the sliding body 10 tends to return to the position shown in FIG. 1, and the vibration energy of the upper structure 7 based on the movement of the foundation 5 in the horizontal direction H is lower than the lower sliding surface 4. And it is absorbed and damped by the friction between each of the upper sliding surface 6 and each of the sliding lower surface 8 and the sliding upper surface 9. Therefore, even if a large horizontal force such as an earthquake is applied to the foundation 5, it is possible to prevent a situation in which the upper structure 7 is collapsed.
[0033]
Next, a method of manufacturing the lower arm 1 used in the seismic isolation device 3 will be described. First, as shown in FIG. 4, an opening 52 for supplying a filler for the filler 17, for example, a shrinkable grout material 51, is provided. Prepare a combination body 53 of the plate-like member 15 provided on the side plate portion 14 and the flat lid member 16 fixed to the end face of the side plate portion 14 of the plate-like member 15 by welding or the like. Similarly, as shown in FIG. 4, after the upright 52 is located so that the opening 52 of the side plate portion 14 is positioned upward, a hose 54 for supplying the grout material 51 is connected to the opening 52 formed of a circular through hole, The supply of the grout material 51 to the space 55 between the dish-like member 15 and the lid member 16 of the combined body 53 is started from 52, the grout material 51 is supplied to the space 55 from the opening 52, and the grout material 51 is supplied to the space 55. Are sequentially filled and the opening 52 is filled. Supplying grout 51 to be filled with grout 51. After the opening 52 is filled with the grout material 51 in addition to the space 55, the supply of the grout material 51 is stopped, and then the grout material 51 is solidified while maintaining the upright state of the combined body 53, and then the grout material During the solidification of 51, the combined body 53 is erected so that the opening 52 of the side plate portion 14 is positioned above, and the combined body 53 is maintained up to the completion of the solidification of the grout material 51. The combination body 53 is released from the upright state, and the lower shell 1 in which the filler 17 composed of the grout material 51 thus solidified is formed in the space 55 is manufactured. After the manufacturing, the lower shell 1 is mounted on the foundation 5. It is used for the seismic isolation device 3.
[0034]
In the lower punch 1 manufactured as described above, a cavity 56 (see FIG. 1) due to contraction when the grout material 51 is solidified can be generated in the vicinity of the side plate portion 14 on the opening 52 side. Is sufficiently away from the central portion of the lower sliding surface 4 and therefore does not substantially affect the support function and seismic isolation function of the seismic isolation device 3.
[0035]
The upper bowl 2 can also be produced in the same manner as the lower bowl 1.
[0036]
In the above manufacturing method, during the solidification of the grout material 51, the combined body 53 is erected so that the opening 52 of the side plate portion 14 is positioned upward, so that the influence of the shrinkage of the grout material 51 during the solidification is on the opening 52 side. The grout material 51 filled in the space 55 between the dish-like member 15 and the lid member 16 is in close contact with the dish-like member 15 and the lid member 16. As a result, the gap between the dish-like member 15 and the lid member 16 that receives the load is substantially not generated, and therefore, the non-shrinkable grout material is not used as the grout material 51. Inconvenient gaps are not generated after the grout material 51 is solidified, so that the support function and the seismic isolation function can be exhibited as desired, and the cutting process can be omitted, so that the cost can be reduced. Before filling To erect only combined body 53, a result of grout 51 is thereby upright combination body 53 of lightweight unfilled, thereby facilitating the work.
[0037]
In the above manufacturing method, the hose 54 is connected directly to the opening 52 and the space 55 is filled with the grout material 51 via the opening 52. Instead, as shown in FIG. The lower casing 1 may be manufactured using the dish-shaped member 15 having the side plate portion 14 with the pipe 61 serving as an enclosed hollow enclosure. That is, as shown in FIG. 5, the tube 61 is fixed to the side plate portion 14 by welding or the like, preferably temporarily fixed, and the plate-like lid member 16 fixed to the side plate portion 14 of the plate-like member 15. And the combination body 53 is erected so that the opening 52 of the side plate portion 14 is located above, and then the hose 54 for supplying the grout material 51 is connected to the pipe 61 to obtain the combination body. While maintaining the upright state of 53, the grout material 51 is supplied to the space 55 through the hollow portion 62 and the opening 52 of the tube 61, and the hollow portion 62 of the tube 61 is formed by the grout material 51 as shown in FIG. The grout material 51 is supplied until it is filled, and thereafter, the lower iron 1 is manufactured in the same manner as described above. In the case of such a manufacturing method, when the amount of grout material 51 determined based on the amount of shrinkage at the time of solidification of the grout material 51 filling the space 55 is filled in the hollow portion 62 of the pipe 61, the cavity 56 (see FIG. 1). ) Can be eliminated. Then, after the grout material 51 is solidified, the temporarily fastened tube 61 may be removed from the side plate portion 14 as shown in FIG. The upper bowl 2 can be manufactured in the same manner as the lower bowl 1.
[0038]
In any of the manufacturing methods described above, after the grout material 51 is filled into the space 55 and before the grout material 51 is solidified, preferably immediately after the grout material 51 is filled into the space 55, the combination body 53 is erected. Alternatively, after the grout material 51 is solidified, the opening 52 may be closed with a sealing member as necessary.
[0039]
【The invention's effect】
According to the present invention, it is possible to save a lot of time and a labor-intensive cutting process, and to reduce the cost. In addition, a support function and a seismic isolation function can be achieved without using a non-shrinkable grout material as a filler. Thus, it is possible to provide a method for manufacturing the upper and lower armpits of the seismic isolation device that does not cause an inconvenient gap after the filling material is solidified.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a preferred example of an embodiment of a seismic isolation device using an upper arm and a lower arm manufactured by the manufacturing method of the present invention.
FIG. 2 is a cross-sectional view taken along line II-II shown in FIG.
FIG. 3 is an operation explanatory diagram of the example shown in FIG. 1;
4 is an explanatory view of an example of a manufacturing method of the example of the upper eyelid and the lower eyelid shown in FIG. 1. FIG.
FIG. 5 is an explanatory diagram of another example of the manufacturing method of the example of the upper and lower eyelids shown in FIG.
6 is an explanatory diagram of the example of FIG.
FIG. 7 is an explanatory diagram of the example of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lower arm 2 Upper arm 3 Seismic isolation device 4 Lower side sliding surface 5 Base 6 Upper side sliding surface 7 Upper structure 10 Sliding body 13 Concave plate part 14 Side plate part 15 Dish-shaped member 16 Lid member 17 Packing body

Claims

上方に向かって断面円弧凹状の下側荷重受面を有した下沓と、下方に向かって断面円弧凹状の上側荷重受面を有した上沓と、下沓と上沓との間に介在された介在体とを具備しており、上沓及び下沓のうちの少なくとも一方が、断面円弧状の凹板部及びこの凹板部に一体な環状の側板部を有していると共に板状体からなる皿状部材と、この皿状部材の側板部に固着された平板状の蓋部材と、皿状部材と蓋部材との間の空間に充填された充填体とを具備しており、下沓に介在体を介して上沓を移動自在に支持する免震装置のための前記の上沓及び下沓のうちの少なくとも一方の製造方法であって、充填体のための充填材を供給する開口を側板部に有した皿状部材とこの皿状部材の側板部に固着された平板状の蓋部材との組み合わせ体を準備し、この組み合わせ体の皿状部材と蓋部材との間の空間に開口から充填材を供給して当該空間に充填材を充填し、空間での充填材の少なくとも固化中には組み合わせ体を側板部の開口が上方に位置するように直立させる、上沓及び下沓のうちの少なくとも一方の製造方法。It is interposed between a lower rod having a lower load receiving surface having an arc-shaped concave section upward, an upper rod having an upper load receiving surface having an arc-shaped concave portion facing downward, and the lower rod and the upper rod. And at least one of the upper collar and the lower collar has a concave plate portion having an arc-shaped cross section and an annular side plate portion integrated with the concave plate portion, and a plate-like body. A plate-shaped member made of a flat plate-shaped lid member fixed to a side plate portion of the plate-shaped member, and a filling body filled in a space between the plate-shaped member and the lid member. A method of manufacturing at least one of the upper and lower heels for a seismic isolation device that movably supports the upper heel via an intervening body, and supplying a filler for the stuffing body A combination of a plate-like member having an opening in the side plate portion and a flat lid member fixed to the side plate portion of the plate-like member is prepared. The filler is supplied to the space between the dish-shaped member and the lid member of the combined body from the opening to fill the space with the filler, and the combined body is opened at the side plate portion at least during solidification of the filler in the space. A method of manufacturing at least one of an upper eyelid and a lower eyelid, wherein the upper eyelid and the lower eyelid are made to stand upright.

組み合わせ体を直立させた後、開口から空間への充填材の供給を開始する請求項１に記載の製造方法。The manufacturing method according to claim 1, wherein after the combination body is erected, the supply of the filler from the opening to the space is started.

空間への充填材の充填後に組み合わせ体を直立させる請求項１に記載の製造方法。The manufacturing method according to claim 1, wherein the combination is erected after filling the space with the filler.

充填材の固化完了まで組み合わせ体の直立状態を維持する請求項１から３のいずれか一項に記載の製造方法。The manufacturing method as described in any one of Claim 1 to 3 which maintains an upright state of a combined body until completion of solidification of a filler.

上沓及び下沓のうちの少なくとも一方が上沓である請求項１から４のいずれか一項に記載の製造方法。The manufacturing method according to any one of claims 1 to 4, wherein at least one of the upper eyelid and the lower eyelid is an upper eyelid.

上沓及び下沓のうちの少なくとも一方が下沓である請求項１から４のいずれか一項に記載の製造方法。The manufacturing method according to any one of claims 1 to 4, wherein at least one of the upper eyelid and the lower eyelid is a lower eyelid.

開口が充填材で満たされるまで充填材を供給する請求項１から６のいずれか一項に記載の製造方法。The manufacturing method according to claim 1, wherein the filler is supplied until the opening is filled with the filler.

中空の囲繞体を側板部に有した皿状部材を用いる請求項１から７のいずれか一項に記載の製造方法であって、充填材を囲繞体の中空部及び開口を介して空間に供給すると共に、囲繞体の中空部が充填材で満たされるまで充填材を供給する製造方法。It is a manufacturing method as described in any one of Claim 1 to 7 using the dish-shaped member which has the hollow enclosure in the side-plate part, Comprising: A filler is supplied to space through the hollow part and opening of an enclosure. And a manufacturing method of supplying the filler until the hollow portion of the enclosure is filled with the filler.

皿状部材と蓋部材との間の空間に満たす充填材の固化時の収縮量に基づいて決定された量の充填材を囲繞体の中空部に満たす請求項８に記載の製造方法。The manufacturing method according to claim 8, wherein the hollow portion of the enclosure is filled with an amount of filler determined based on a shrinkage amount when the filler filling the space between the dish-shaped member and the lid member is solidified.

充填材として収縮性のグラウト材を用いる請求項１から９のいずれか一項に記載の製造方法。The manufacturing method as described in any one of Claim 1 to 9 which uses a shrinkable grout material as a filler.

充填材の固化後、直立状態を解除する請求項１から１０のいずれか一項に記載の製造方法。The manufacturing method according to any one of claims 1 to 10, wherein the upright state is released after the filler is solidified.

介在体は、下沓の下側荷重受面の曲率と同一の曲率を有し、下側荷重受面に摺動自在に接する摺動下面を備えると共に、上沓の上側荷重受面の曲率と同一の曲率を有し、上側荷重受面に摺動自在に接する摺動上面を備えた摺動体である請求項１から１１のいずれか一項に記載の製造方法。The intervening body has the same curvature as that of the lower load receiving surface of the lower rod, and has a sliding lower surface slidably contacting the lower load receiving surface, and the curvature of the upper load receiving surface of the upper rod. The manufacturing method according to any one of claims 1 to 11, which is a sliding body having a sliding upper surface having the same curvature and slidably contacting the upper load receiving surface.