JPH11141179A - Mounting structure of laminated rubber - Google Patents
Mounting structure of laminated rubberInfo
- Publication number
- JPH11141179A JPH11141179A JP31034897A JP31034897A JPH11141179A JP H11141179 A JPH11141179 A JP H11141179A JP 31034897 A JP31034897 A JP 31034897A JP 31034897 A JP31034897 A JP 31034897A JP H11141179 A JPH11141179 A JP H11141179A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- laminated rubber
- mounting flange
- upper structure
- mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Foundations (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、特に免震装置を
設置した免震構造の建物や橋梁などの構造物において、
上部構造体とこの上部構造体を支持する下部構造体との
間に積層ゴムを設置する際の積層ゴムの取付部構造に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation structure of a building or a bridge having a seismic isolation device.
The present invention relates to a mounting structure of a laminated rubber when a laminated rubber is installed between an upper structure and a lower structure supporting the upper structure.
【０００２】[0002]
【従来の技術】最近の建物には、地上部分とこの地上部
分を支持する基礎との間に免震装置を設置した免震構造
の建物、このうち特に柱などの中間部に免震装置を設置
した中間免震構造の建物、さらに他の構造物としては、
例えば橋桁とこの橋桁を支持する橋脚との間に免震装置
を設置した免震構造の橋などが知られている。2. Description of the Related Art In recent buildings, seismic isolation devices are installed between a ground portion and a foundation that supports the ground portion, and a seismic isolation device is installed particularly in an intermediate portion of a pillar or the like. The installed building with an intermediate seismic isolation structure, as well as other structures,
For example, a bridge having a seismic isolation structure in which a seismic isolation device is installed between a bridge girder and a pier supporting the bridge girder is known.
【０００３】この種の免震構造の建物や構造物に使用さ
れる免震装置には積層ゴムが使用され、この種の積層ゴ
ム１として例えば、図４(a),(b),(c) に図示するように
薄いゴムと鉄板を交互に複数重ね合わせた積層ゴム本体
２と、この積層ゴム本体２の上端部と下端部にそれぞれ
取り付けた上部取付フランジ３および下部取付フランジ
４とからなるものが一般に知られている。また、この種
の積層ゴム１は、例えば免震構造の建物においては、上
部構造体５とこの上部構造体５を支持する基礎６との間
に設置され、上部取付フランジ３を上部構造体５に、下
部取付フランジ４を基礎６にそれぞれ複数の固定ボルト
７でボルト止めして固定されている。その際、固定ボル
ト７は上部構造体５と基礎６のコンクリート中にそれぞ
れ埋設されたインサートナット８に螺合されている。A laminated rubber is used for a seismic isolation device used for a building or a structure having this kind of seismic isolation structure. As this kind of laminated rubber 1, for example, FIGS. 2), a laminated rubber main body 2 in which a plurality of thin rubbers and iron plates are alternately stacked, and an upper mounting flange 3 and a lower mounting flange 4 mounted on the upper end and the lower end of the laminated rubber main body 2, respectively. Things are generally known. In a building having a seismic isolation structure, for example, this kind of laminated rubber 1 is installed between an upper structure 5 and a foundation 6 supporting the upper structure 5, and the upper mounting flange 3 is attached to the upper structure 5. In addition, the lower mounting flange 4 is fixed to the foundation 6 by bolting with a plurality of fixing bolts 7, respectively. At this time, the fixing bolt 7 is screwed into an insert nut 8 buried in the concrete of the upper structure 5 and the foundation 6, respectively.
【０００４】このような構成において、地震時に積層ゴ
ム本体２が上部構造体５の鉛直荷重を支持しながらゆっ
くり横方向に変形することによって地震エネルギーを効
果的に吸収する。また、積層ゴム１が過大な地震で傷ん
だときは、固定ボルト７を取り外し、かつ上部構造体５
をジャッキ９でジャッキアップした後、傷んだ積層ゴム
１を新しいものと交換している。その際、積層ゴム１は
上部構造体５と基礎６間を横にスライドさせて移動す
る。In such a configuration, the laminated rubber main body 2 deforms slowly in the lateral direction while supporting the vertical load of the upper structure 5 during an earthquake, thereby effectively absorbing the seismic energy. When the laminated rubber 1 is damaged by an excessive earthquake, the fixing bolt 7 is removed and the upper structure 5 is removed.
After the jack-up with the jack 9, the damaged laminated rubber 1 is replaced with a new one. At that time, the laminated rubber 1 slides and moves between the upper structure 5 and the foundation 6.
【０００５】[0005]
【発明が解決しようとする課題】しかし、積層ゴム１の
上部取付フランジ３と下部取付フランジ４が、上部構造
体５と基礎６に固定ボルト７でそれぞれ直接ボルト止め
して固定されているので、積層ゴム１を新しいものと交
換する際に、上部構造体５や基礎６のコンクリート面に
凹凸があったりすると、上部または下部取付フランジが
この凹凸に当たって積層ゴム１をスムーズに取り出しに
くい等の課題があった。However, since the upper mounting flange 3 and the lower mounting flange 4 of the laminated rubber 1 are directly bolted to the upper structure 5 and the foundation 6 with fixing bolts 7, respectively. When the laminated rubber 1 is replaced with a new one, if the concrete surface of the upper structure 5 or the foundation 6 has irregularities, the upper or lower mounting flange may hit the irregularities and the laminated rubber 1 may not be smoothly removed. there were.
【０００６】また、上部構造体５の構築に際し、積層ゴ
ム１を設置する部分に当然に型枠を設置する必要があ
り、さらに一般に上部取付フランジ３と下部取付フラン
ジ４は円形板状に形成されているため、上部構造体５を
構築するための型枠を設置する際に、上部取付フランジ
３の周囲に設置する型枠を上部取付フランジ３の形状に
対応するように加工する必要があり、積層ゴム周辺部の
型枠の加工が面倒である等の課題もあった。When the upper structure 5 is to be constructed, it is necessary to form a mold at the portion where the laminated rubber 1 is to be installed, and the upper mounting flange 3 and the lower mounting flange 4 are generally formed in a circular plate shape. Therefore, when installing a formwork for constructing the upper structure 5, it is necessary to process a formwork installed around the upper mounting flange 3 so as to correspond to the shape of the upper mounting flange 3, There were also problems such as processing of the mold around the laminated rubber was troublesome.
【０００７】さらに、積層ゴム１の上側に上部構造体５
の柱主筋10やＰＣ鋼棒11を設置する際に、端部の定着、
あるいは位置決めや仮固定するためのアンカーフレーム
12を取り付ける必要があり、柱主筋10やＰＣ鋼棒11の設
置が面倒である等の課題もあった。Further, an upper structure 5 is provided above the laminated rubber 1.
When installing column main bars 10 and PC steel rods 11, fix the ends,
Or anchor frame for positioning and temporary fixing
There was also a problem that it was necessary to attach 12 and the installation of the column main bar 10 and the PC steel bar 11 was troublesome.
【０００８】この発明は、以上の課題を解決するために
なされたもので、特に積層ゴムの交換をきわめて簡単に
行えるようにした積層ゴムの取付部構造を提供すること
を目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a mounting structure of a laminated rubber which makes it possible to replace the laminated rubber very easily.
【０００９】[0009]
【課題を解決するための手段】以上の課題を解決するた
めに、この発明に係る積層ゴムの取付部構造は、積層ゴ
ム本体と、その上端部と下端部に上部取付フランジと下
部取付フランジをそれぞれ有してなる積層ゴムを、上部
構造体とこの上部構造体を支持する下部構造体との間に
設置する際に、前記下部構造体と下部取付フランジとの
間に鋼製テンプレートを、前記上部構造体と上部取付フ
ランジとの間に鋼製型枠をそれぞれ介在する。また、下
部取付フランジと鋼製テンプレートとの当接面、上部取
付フランジと鋼製型枠板との当接面にグリースをそれぞ
れ塗着する。In order to solve the above problems, a laminated rubber mounting structure according to the present invention comprises a laminated rubber main body, an upper mounting flange and a lower mounting flange at its upper and lower ends. When installing the laminated rubber, respectively, between the upper structure and the lower structure supporting this upper structure, a steel template between the lower structure and the lower mounting flange, A steel formwork is interposed between the upper structure and the upper mounting flange. Grease is applied to the contact surface between the lower mounting flange and the steel template and the contact surface between the upper mounting flange and the steel form plate.
【００１０】さらに、鋼製型枠の上に上部構造体のコン
クリート中に設置されるＰＣ鋼棒や柱主筋の端部を定着
し、または柱主筋の端部の位置を決めるカプラーを複数
突設する。[0010] Further, a plurality of couplers are provided on the steel formwork for fixing PC steel rods and ends of column main bars installed in the concrete of the upper structure, or for determining the positions of the ends of the column main bars. I do.
【００１１】[0011]
【発明の実施の形態】図１は、この発明の実施の一形態
を示し、特に前記従来例と同一部分には同一符号を付し
てその説明を省略する。FIG. 1 shows an embodiment of the present invention. In particular, the same parts as those of the above-mentioned conventional example are denoted by the same reference numerals, and the description thereof will be omitted.
【００１２】本願発明の積層ゴムの取付部構造において
は、前記従来の構成に加えてさらに、上部取付フランジ
３と上部構造体５との間に鋼製型枠13が上部構造体５側
に固定して設置され、また下部取付フランジ４と下部構
造体（以下「基礎」という）６との間に鋼製テンプレー
ト14が基礎６側に固定して設置されている。その際、鋼
製型枠13と鋼製テンプレート14は、インサートナット８
を固定用アンカーボルトとして上部構造体５と基礎６の
表面にそれぞれ固定されている。In the mounting structure of the laminated rubber according to the present invention, in addition to the conventional structure, a steel mold 13 is fixed to the upper structure 5 side between the upper mounting flange 3 and the upper structure 5. A steel template 14 is fixedly installed on the foundation 6 side between the lower mounting flange 4 and the lower structure (hereinafter referred to as “foundation”) 6. At this time, the steel formwork 13 and the steel template 14
Are fixed on the surfaces of the upper structure 5 and the foundation 6 as fixing anchor bolts.
【００１３】鋼製型枠13は上部取付フランジ３より、鋼
製テンプレート14は下部取付フランジ４よりそれぞれ大
きい矩形板状に形成されている。また、鋼製型枠13の上
部取付フランジ３との当接面、鋼製テンプレート14の下
部取付フランジ４との当接面には錆止め処理が施されて
いる。さらに、鋼製型枠13と上部取付フランジ３との当
接面、鋼製テンプレート14と下部取付フランジ４との当
接面にはグリースがそれぞれ塗着されている。The steel mold 13 is formed in a rectangular plate shape larger than the upper mounting flange 3, and the steel template 14 is formed in a rectangular plate shape larger than the lower mounting flange 4. Further, the contact surface of the steel mold 13 with the upper mounting flange 3 and the contact surface of the steel template 14 with the lower mounting flange 4 are subjected to rust prevention treatment. Further, grease is applied to a contact surface between the steel mold 13 and the upper mounting flange 3 and a contact surface between the steel template 14 and the lower mounting flange 4.
【００１４】そして、上部取付フランジ３は上部構造体
５に鋼製型枠13を介在し、複数本の固定ボルト７で固定
され、下部取付フランジ４は基礎６に鋼製テンプレート
14を介在し、複数本の固定ボルト７で固定されている。The upper mounting flange 3 is fixed to the upper structure 5 with a plurality of fixing bolts 7 with a steel mold 13 interposed therebetween, and the lower mounting flange 4 is mounted on a foundation 6 with a steel template.
14 and is fixed by a plurality of fixing bolts 7.
【００１５】このような構成において、上部構造体５と
この上部構造体５を支持する基礎６間に設置されている
積層ゴム１を新しいものと交換にするには、まず固定ボ
ルト７を取り外して上部取付フランジ３と下部取付フラ
ンジ４を上部構造体５と基礎６からそれぞれ開放する。
次に、上部構造体５をジャッキ９でジャッキアップす
る。次に、鋼製テンプレート14の上の積層ゴム１を横方
向にスライドさせて引き出し、新しい積層ゴムと交換す
る。その際、鋼製型枠13と上部取付フランジ３との当接
面、鋼製テンプレート14と下部取付フランジ４との当接
面にグリースが塗着されているので、当接面の摩擦がき
わめて小さくなって積層ゴム１の出し入れをスムーズに
行うことができる。In such a configuration, in order to exchange the laminated rubber 1 installed between the upper structure 5 and the foundation 6 supporting the upper structure 5 with a new rubber, first, the fixing bolt 7 is removed. The upper mounting flange 3 and the lower mounting flange 4 are released from the upper structure 5 and the foundation 6, respectively.
Next, the upper structure 5 is jacked up by the jack 9. Next, the laminated rubber 1 on the steel template 14 is slid laterally, pulled out, and replaced with a new laminated rubber. At this time, since the contact surface between the steel mold 13 and the upper mounting flange 3 and the contact surface between the steel template 14 and the lower mounting flange 4 are coated with grease, the friction of the contact surface is extremely low. As a result, the laminated rubber 1 can be smoothly taken in and out.
【００１６】図３(a),(b) はこの発明の他の例を示し、
鋼製型枠13の上側に上部構造体６のコンクリート中に設
置される柱主筋10やＰＣ鋼棒11の端部を定着したり、単
に柱主筋10の端部を位置決めするためのカプラー15が複
数突設されている。その際特に、柱主筋10やＰＣ鋼棒11
の端部を定着する場合は柱主筋10やＰＣ鋼棒11の端部を
ねじ込んで連結できるねじ式カプラーが突設され、また
単に柱主筋10の端部を位置決めする場合は柱主筋10の端
部を差し込めるようなシースカプラーが突設されてい
る。この例によれば、柱主筋10やＰＣ鋼棒11の端部をき
わめて簡単にかつ確実に定着でき、また位置決めするこ
とができる。FIGS. 3A and 3B show another example of the present invention.
A coupler 15 for fixing the end of the column main bar 10 or the PC steel bar 11 installed in the concrete of the upper structure 6 above the steel formwork 13 or simply positioning the end of the column main bar 10 is provided. There are multiple protrusions. In this case, in particular, pillar main bars 10 and PC steel bars 11
When fixing the end of the column main bar 10, a threaded coupler that can be connected by screwing the end of the column main bar 10 or the PC steel bar 11 is protruded, and when simply positioning the end of the column main bar 10, the end of the column main bar 10 is A sheath coupler into which a part can be inserted protrudes. According to this example, the ends of the column main bar 10 and the PC steel bar 11 can be fixed very easily and reliably, and can be positioned.
【００１７】なお、図においては、建物の上部構造体と
この上部構造体を支持する基礎との間に積層ゴムを設置
する構造について説明したが、例えば橋桁とこの橋桁を
支持する橋脚との間などに積層ゴムを取り付ける場合も
同様の構造で積層ゴムを設置することができる。In the drawings, the structure in which the laminated rubber is installed between the superstructure of the building and the foundation for supporting the superstructure has been described. For example, the structure between the bridge girder and the pier supporting this bridge girder is described. For example, when a laminated rubber is attached to the apparatus, the laminated rubber can be installed in the same structure.
【００１８】[0018]
【発明の効果】この発明は以上説明した構成からなり、
積層ゴムを上部構造体とこの上部構造体を支持する下部
構造体との間に設置する際に、下部構造体と下部取付フ
ランジとの間に鋼製テンプレートを、上部構造体と上部
取付フランジとの間に鋼製型枠がそれぞれ介在してある
ので、特に上部構造体の施工に際して積層ゴムを取り付
ける部分の型枠として鋼製型枠を使用することによりこ
の部分の型枠を省略できて、施工の大幅な省力化が図れ
る効果がある。The present invention has the above-described structure,
When the laminated rubber is installed between the upper structure and the lower structure supporting the upper structure, a steel template is placed between the lower structure and the lower mounting flange, and the upper structure and the upper mounting flange. Since the steel formwork is interposed between them, the steel formwork can be omitted by using the steel formwork as the formwork of the part to which the laminated rubber is attached particularly when constructing the upper structure, This has the effect of significantly reducing the labor required for construction.
【００１９】また、積層ゴムの交換に際して積層ゴムを
スムーズに出し入れできて積層ゴムの交換作業がし易い
等の効果がある。その際特に、下部取付フランジと鋼製
テンプレートとの当接面、上部取付フランジと鋼製型枠
板との当接面にグリースがそれぞれ塗着してあるので、
当接面の摩擦がきわめて小さくなって積層ゴムをよりス
ムーズに出し入れできて積層ゴムの交換作業がし易くな
る。In addition, when replacing the laminated rubber, there is an effect that the laminated rubber can be smoothly taken in and out, and the replacement of the laminated rubber can be easily performed. At that time, in particular, grease is applied to the contact surface between the lower mounting flange and the steel template, and the contact surface between the upper mounting flange and the steel form plate.
The friction of the contact surface is extremely small, so that the laminated rubber can be smoothly taken in and out, and the replacement of the laminated rubber can be easily performed.
【００２０】さらに、鋼製型枠の上に上部構造体のコン
クリート中に設置される柱主筋やＰＣ鋼棒の端部を定着
し、または位置決めするためのカプラーが複数突設して
あるので、柱主筋やＰＣ鋼棒の定着と位置決め、仮固定
をきわめて簡単にかつ確実に行うことができる。Further, since a plurality of couplers are provided on the steel formwork for fixing or positioning the main bars of the columns and the ends of the PC steel bars installed in the concrete of the upper structure, The fixing, positioning, and temporary fixing of the main column and the PC steel bar can be performed very easily and reliably.
【図１】積層ゴムの取付部の構造を示す基礎部の縦断面
図である。FIG. 1 is a longitudinal sectional view of a foundation showing a structure of a mounting portion of a laminated rubber.
【図２】積層ゴムの交換方法を示す基礎部の縦断面図で
ある。FIG. 2 is a longitudinal sectional view of a base showing a method of replacing a laminated rubber.
【図３】(a),(b) は積層ゴムの取付部の構造を示す基礎
部の縦断面図である。FIGS. 3 (a) and 3 (b) are longitudinal sectional views of a base portion showing a structure of a mounting portion of a laminated rubber.
【図４】(a),(b),(c) は積層ゴムの交換方法を示す基礎
部の縦断面図である。FIGS. 4 (a), (b) and (c) are longitudinal sectional views of a foundation showing a method of replacing a laminated rubber.
【図５】従来の積層ゴムの取付部の構造の一例を示す基
礎部の縦断面図である。FIG. 5 is a vertical cross-sectional view of a base portion showing an example of the structure of a conventional mounting portion for a laminated rubber.
１ 積層ゴム ２ 積層ゴム本体 ３ 上部取付フランジ ４ 下部取付フランジ ５ 上部構造体 ６ 基礎（下部構造体） ７ 固定ボルト ８ インサートナット ９ ジャッキ 10 柱主筋 11 ＰＣ鋼棒 12 アンカーフレーム 13 鋼製型枠 14 鋼製テンプレート 15 カプラー Reference Signs List 1 laminated rubber 2 laminated rubber body 3 upper mounting flange 4 lower mounting flange 5 upper structure 6 foundation (lower structure) 7 fixing bolt 8 insert nut 9 jack 10 pillar main bar 11 PC steel rod 12 anchor frame 13 steel formwork 14 Steel template 15 coupler
Claims (4)
上部取付フランジと下部取付フランジをそれぞれ有して
なる積層ゴムを、上部構造体とこの上部構造体を支持す
る下部構造体との間に設置する際の積層ゴムの取付部構
造において、前記下部構造体と下部取付フランジとの間
に鋼製テンプレートを、前記上部構造体と上部取付フラ
ンジとの間に鋼製型枠をそれぞれ介在してあることを特
徴とする積層ゴムの取付部構造。1. A laminated rubber body having upper and lower mounting flanges at its upper and lower ends, respectively, is provided with an upper structure and a lower structure supporting the upper structure. In the mounting structure of the laminated rubber when it is installed between the lower structure and the lower mounting flange, a steel template is interposed between the lower structure and the lower mounting flange, and a steel formwork is interposed between the upper structure and the upper mounting flange. A mounting portion structure for a laminated rubber, which is characterized in that:
の当接面、上部取付フランジと鋼製型枠との当接面にグ
リースをそれぞれ塗着してあることを特徴とする請求項
第１項記載の積層ゴムの取付部構造。2. The grease is applied to a contact surface between the lower mounting flange and the steel template and a contact surface between the upper mounting flange and the steel formwork, respectively. The mounting portion structure of the laminated rubber described in the above.
ト中に設置される柱主筋またはＰＣ鋼棒の端部を定着す
るカプラーを複数突設してあることを特徴とする請求項
第１項または第２項記載の積層ゴムの取付部構造。3. A steel mold comprising a plurality of couplers for fixing a column main bar or an end of a PC steel rod installed in concrete of an upper structure, on a steel formwork. 3. A mounting structure for a laminated rubber according to claim 1 or 2.
ト中に設置される柱主筋の端部の位置を決めるカプラー
を複数突設してあることを特徴とする請求項第１項また
は第２項記載の積層ゴムの取付部構造。4. The steel mold according to claim 1, wherein a plurality of couplers for determining the positions of the ends of the pillar main bars installed in the concrete of the upper structure are provided on the steel formwork. 3. A mounting structure for a laminated rubber according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09310348A JP3090108B2 (en) | 1997-11-12 | 1997-11-12 | Mounting structure of laminated rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09310348A JP3090108B2 (en) | 1997-11-12 | 1997-11-12 | Mounting structure of laminated rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11141179A true JPH11141179A (en) | 1999-05-25 |
| JP3090108B2 JP3090108B2 (en) | 2000-09-18 |
Family
ID=18004160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09310348A Expired - Fee Related JP3090108B2 (en) | 1997-11-12 | 1997-11-12 | Mounting structure of laminated rubber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3090108B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353008C (en) * | 2005-06-28 | 2007-12-05 | 广州大学 | Novel embedded part for vibration isolation bearing and mounting method thereof |
| JP2018091065A (en) * | 2016-12-05 | 2018-06-14 | 株式会社竹中工務店 | Seismic isolation device exchange structure |
| JP2022072539A (en) * | 2020-10-30 | 2022-05-17 | 株式会社竹中工務店 | Seismic isolation upper foundation made of precast concrete |
-
1997
- 1997-11-12 JP JP09310348A patent/JP3090108B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353008C (en) * | 2005-06-28 | 2007-12-05 | 广州大学 | Novel embedded part for vibration isolation bearing and mounting method thereof |
| JP2018091065A (en) * | 2016-12-05 | 2018-06-14 | 株式会社竹中工務店 | Seismic isolation device exchange structure |
| JP2022072539A (en) * | 2020-10-30 | 2022-05-17 | 株式会社竹中工務店 | Seismic isolation upper foundation made of precast concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3090108B2 (en) | 2000-09-18 |
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