JP3822125B2 - Temporary restraint jig for seismic isolation device and restraint method - Google Patents

Temporary restraint jig for seismic isolation device and restraint method Download PDF

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Publication number
JP3822125B2
JP3822125B2 JP2002088461A JP2002088461A JP3822125B2 JP 3822125 B2 JP3822125 B2 JP 3822125B2 JP 2002088461 A JP2002088461 A JP 2002088461A JP 2002088461 A JP2002088461 A JP 2002088461A JP 3822125 B2 JP3822125 B2 JP 3822125B2
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Prior art keywords
seismic isolation
isolation device
coupling member
fixed
restraint
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JP2003278407A (en
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薫 上野
巌 鶴谷
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Kajima Corp
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Kajima Corp
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Description

【０００１】
【発明が属する技術分野】
本発明は、建物の基礎に配設する免震装置の仮設用拘束治具および拘束方法に関するものである。
【０００２】
【従来の技術】
建物の免震装置１として例えば図６、図７に示すものがあり、これは上下のフランジプレート３、３間にゴムと鋼板の互層構造による積層ゴム２を配設し、建物躯体の基礎に設置するもので、基礎杭の上に構築される耐圧盤である地中梁４と、床スラブを支持する地中梁５との間に前記免震装置１を設置し、地中梁４、５の間の隙間を免震ピット６として、地震時の揺れを建物躯体にできるかぎり伝えないようにしている。
【０００３】
かかる免震装置１を地中梁４、５に固定する場合、上下のフランジプレート３、３のそれぞれに周方向にそって等間隔で複数、例えば８〜１２個のボルト孔７を形成しておき、一方、地中梁４、５には袋ナット９を予め埋設しておき、地中梁４、５の間に免震装置１をセットした後、このボルト孔７、袋ナット９にボルト８を挿通する。このようにして、該ボルト８によりフランジプレート３を地中梁４、５にそれぞれ固定することで、免震装置１を地中梁４、５の間に設置する。
【０００４】
図６、図７は積層ゴム２が丸型の場合であるが、図８、図９のように角型とする場合もあり、かかる角型ではフランジプレート３も四角形に形成するが、基本構造は丸型の場合と同様である。
【０００５】
【発明が解決しようとする課題】
免震建物を施工する際、免震装置１は基礎に配設されることから施工の初期の段階で設置されるが、施工中に地震が発生すると、この地震の振動により免震装置１に大きな変形が生じ、施工時の安全性を確保できないおそれがある。
【０００６】
また、施工中に、免震装置上部に乗り入れ構台やタワークレーンなどの揚重機器が設置されて、免震装置に大きな荷重が加わると悪影響を及ぼすおそれがある。かかる場合には免震装置１を基礎に固定しておく必要がある。
【０００７】
さらに、免震装置を施工現場に運搬する際にも、衝撃などが積層ゴム２に加わると積層ゴムの品質の確保が難しくなる。
【０００８】
本発明の目的は前記従来例の不都合を解消し、免震建物の施工現場に免震装置を運搬する際や、免震建物の施工中において、免震装置に加わる振動や荷重によって積層ゴムによる免震装置が変形することを防止し、免震装置の品質確保を図るとともに、施工時の安全性も確保できる免震装置の仮設用拘束治具および拘束方法を提供することにある。
【０００９】
【課題を解決するための手段】
本発明は前記目的を達成するため、免震装置の仮設用拘束治具として、建物躯体の基礎に配設され、上下のフランジプレート間にゴムと鋼板の互層構造による積層ゴムを配設した免震装置において、前記上下のフランジプレートの相対的な変位を拘束するものとして、上下のフランジプレートにそれぞれボルトで固定されるアングル状に形成した固定部材と、該上下の固定部材に免震装置の外面側に位置させて連結する取り外し可能な結合部材とで構成する拘束部材をフランジプレート間に取り外し可能に取り付けたことを要旨とするものである。
【００１０】
拘束方法として、建物躯体の基礎に配設され、上下のフランジプレート間にゴムと鋼板の互層構造による積層ゴムを配設した免震装置の、前記上下のフランジプレートの対向面側にそれぞれボルトで固定されるアングル状に形成した固定部材を該固定部材に免震装置の外面側に位置させて取り付けた取り外し可能な結合部材で連結し、この結合部材で連結された上下一対の固定部材を上下のフランジプレートの対向面側にそれぞれ固定して、固定部材および結合部材で上下のフランジプレートの相対的変位を拘束し、建物躯体の施工完成後に結合部材のみを取り外し拘束を解除することを要旨とするものである。
【００１１】
請求項１記載の本発明によれば、上下のフランジプレートの間に相対的な変位を拘束する拘束部材を取り付けるだけの簡単な構造で、免震装置が変形しないようにして基礎に固定できる。また、免震建物の施工完了後は、拘束部材を取り外せるから、免震装置の機能を発揮できる。
【００１２】
また、拘束部材は固定部材と結合部材との簡単な組み合わせで構成するから、構造が簡単であり、免震建物の施工完了後に、免震装置の機能を発揮させるためには、結合部材だけを外せばよいから、作業性がよい。
【００１３】
請求項２記載の本発明によれば、上下のフランジプレートの間に拘束部材を取り付けるだけで上下のフランジプレートの相対的な変位を拘束することができ、免震装置に地震による振動や上からの大きな荷重が加わっても、免震装置が変形することがない。この場合、結合部材で連結された上下一対の固定部材を上下のフランジプレートの間に差し込んで、フランジプレートの対向面側にそれぞれ固定するだけでよいから施工性がよい。
【００１４】
さらに、フランジプレートを基礎の地中梁に固定する同じボルトで固定部材を同時にフランジプレートに固定するから、固定部材を固定するために別のボルトなどを必要とせず、また、フランジプレートの固定時に同時に固定できるから作業工程数が増加することもない。
【００１５】
また、免震装置の外面側に位置させて結合部材を固定部材に取り付けてあるから、建物躯体の施工完成後には結合部材のみを固定部材から除去して取り外せば、拘束を簡単に解除することができる。そして、結合部材の除去は、免震装置の外側から行えるから作業が容易である。
【００１６】
【発明の実施の形態】
以下、図面について本発明の実施の形態を詳細に説明する。図１は本発明の免震装置の仮設用拘束治具の第１実施形態を示す縦断正面図、図２は同上一部切欠いた平面図で、図６、図７に示した従来例と同一の構成要素には同一の参照符号を付してある。免震建物の基礎の地中梁４、５の間に免震装置１が配設される構造、および、免震装置１がフランジプレート３、３の間に積層ゴム２を配設した構造である点は従来と同様である。
【００１７】
本発明はかかる構成の免震装置１において、上下のフランジプレート３、３の間にフランジプレート３、３の相対的な変位を拘束する拘束部材１０を配設する。この拘束部材１０は、図５の斜視図にも示すように上下のフランジプレート３、３にそれぞれ固定される固定部材１１と、該上下の固定部材１１を連結する取り外し可能な結合部材１２とで構成する。
【００１８】
固定部材１１は、例えばＬ型のアングル鋼材や組立鋼材で構成し、水平部１１ａおよび垂直部１１ｂにそれぞれ複数のボルト孔１３が穿設してある。
【００１９】
結合部材１２は、この上下の固定部材１１の垂直部１１ｂの外側に取り外し可能に取り付けられて、上下の固定部材１１を結合するもので、平鋼により構成し、前記ボルト孔１３に対応する位置にボルト孔１４を穿設した。
【００２０】
かかる拘束部材１０を使用して、免震装置１の変位を拘束するには、まず、図５に示すように、上下一対の固定部材１１を対向させ、その垂直部１１ｂの外側に結合部材１２を当てがい、ボルト孔１３とボルト孔１４を合致させてここにボルト１５を挿入し、該ボルト１５で固定部材１１と結合部材１２とを結合する。
【００２１】
このようにして結合した結合部材１２が取り付けられた固定部材１１をフランジプレート３、３の間に嵌め込み、固定部材１１の水平部１１ａをフランジプレート３、３に当接し、ボルト孔７とボルト孔１３とを合致させ、ここにボルト８を挿入して固定部材１１をフランジプレート３に固定する。
【００２２】
これにより、拘束部材１０がフランジプレート３、３の間に固定され、上下のフランジプレート３、３の相対的な変位が拘束部材１０によって阻止される。よって、施工中に地震が発生したり、上方から大きな荷重が加わっても、免震装置１が変形することはない。
【００２３】
かかる拘束部材１０は、免震装置１が丸型の場合は、対称位置に例えば４セットを配置する。また、図３、図４に示すように免震装置１が角型の場合は、例えば４辺に位置させてそれぞれ１セットずつ合計４セットの拘束部材１０を配置する。なお、拘束部材１０の配置例はこれに限定されるものではなく、複数配設される免震装置１に対して、それぞれ異なる方向で２セットずつ配置してもよい。
【００２４】
なお、拘束部材１０を配設する対象となる免震装置１は、基礎に設置された施工中のものに限定されるものではなく、施工現場に運搬する途中のものについても実施可能であり、運搬中の衝撃などによって免震装置１が変形することを防げる。
【００２５】
そして、免震建物の施工が完了すれば、あるいは、拘束部材１０が不要となっ時点で、ボルト１５を外せば、結合部材１２のみを固定部材１１から撤去でき、これにより、上下の固定部材１１の拘束、すなわち上下のフランジプレート３の拘束を解除でき、免震装置１を機能させることができる。このボルト１５の取り外しは、免震装置１の外面側から行えるから、作業が容易である。
【００２６】
【発明の効果】
以上述べたように本発明の免震装置の仮設用拘束治具および拘束方法は、免震建物の施工現場に免震装置を運搬する際や、免震建物の施工中において、地震発生時の振動や、免震装置上部からの大きな荷重が免震装置に加わっても、積層ゴムによる免震装置が変形することを防止し、免震装置の品質確保を図るとともに、施工時の安全性も確保できるものである。
【図面の簡単な説明】
【図１】 本発明の免震装置の仮設用拘束治具の第１実施形態を示す縦断正面図である。
【図２】 本発明の免震装置の仮設用拘束治具の第１実施形態を示す一部切欠いた平面図である。
【図３】 本発明の免震装置の仮設用拘束治具の第２実施形態を示す縦断正面図である。
【図４】 本発明の免震装置の仮設用拘束治具の第２実施形態を示す一部切欠いた平面図である。
【図５】 本発明の免震装置の仮設用拘束治具の取付方法を示す一部切欠いた斜視図である。
【図６】 従来の免震装置の第１例を示す縦断正面図である。
【図７】 従来の免震装置の第１例を示す平面図である。
【図８】 従来の免震装置の第２例を示す縦断正面図である。
【図９】 従来の免震装置の第２例を示す平面図である。
【符号の説明】
１…免震装置 ２…積層ゴム
３…フランジプレート ４…地中梁
５…地中梁 ６…免震ピット
７…ボルト孔 ８…ボルト
９…袋ナット 10…拘束部材
11…固定部材 11ａ…水平部
11ｂ…垂直部 12…結合部材
13…ボルト孔 14…ボルト孔
15…ボルト[0001]
[Technical field to which the invention belongs]
The present invention relates to a temporary restraining jig and a restraining method for a seismic isolation device arranged on the foundation of a building.
[0002]
[Prior art]
For example, the building seismic isolation device 1 shown in FIGS. 6 and 7 includes a laminated rubber 2 having a laminated structure of rubber and steel plates between the upper and lower flange plates 3, 3. The seismic isolation device 1 is installed between the underground beam 4 that is a pressure plate built on the foundation pile and the underground beam 5 that supports the floor slab. The seismic isolation pit 6 is used as the gap between the five, so that the shaking at the time of the earthquake is not transmitted to the building as much as possible.
[0003]
When the seismic isolation device 1 is fixed to the underground beams 4 and 5, a plurality of, for example, 8 to 12 bolt holes 7 are formed at equal intervals along the circumferential direction in the upper and lower flange plates 3 and 3. On the other hand, a cap nut 9 is embedded in the underground beams 4 and 5 in advance, and the seismic isolation device 1 is set between the underground beams 4 and 5, and then the bolt hole 7 and the cap nut 9 are bolted. 8 is inserted. In this way, the seismic isolation device 1 is installed between the underground beams 4 and 5 by fixing the flange plate 3 to the underground beams 4 and 5 with the bolts 8.
[0004]
6 and 7 show a case where the laminated rubber 2 is a round shape, but there are cases where it is a square shape as shown in FIGS. 8 and 9. In such a square shape, the flange plate 3 is also formed in a square shape. Is the same as in the round shape.
[0005]
[Problems to be solved by the invention]
When constructing a seismic isolation building, the seismic isolation device 1 is installed on the foundation, so it is installed at the initial stage of construction. If an earthquake occurs during construction, the seismic isolation device 1 is affected by the vibration of this earthquake. Large deformation may occur and safety during construction may not be ensured.
[0006]
In addition, during construction, if heavy equipment such as a pedestal or tower crane is installed on the upper part of the seismic isolation device and a large load is applied to the seismic isolation device, there is a risk of adverse effects. In such a case, it is necessary to fix the seismic isolation device 1 to the foundation.
[0007]
Furthermore, when the seismic isolation device is transported to the construction site, it is difficult to ensure the quality of the laminated rubber if an impact is applied to the laminated rubber 2.
[0008]
The object of the present invention is to eliminate the inconvenience of the conventional example, and when carrying the seismic isolation device to the construction site of the seismic isolation building or during the construction of the seismic isolation building, the laminated rubber is used by the vibration and load applied to the seismic isolation device. An object of the present invention is to provide a temporary restraining jig and a restraining method for a seismic isolation device capable of preventing the seismic isolation device from being deformed, ensuring the quality of the seismic isolation device, and ensuring safety during construction.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention is provided as a temporary restraining jig for a seismic isolation device, which is disposed on the foundation of a building frame, and is provided with laminated rubber having a laminated structure of rubber and steel plates between upper and lower flange plates. in Isolation system, as to restrain the relative displacement of the upper and lower flanges plate, a fixing member formed in an angle shape to be fixed in the respective upper and lower flanges plate bolts, the seismic isolation device to a fixed member of the upper and lower it is an Abstract that removably attached to the restraining member constituted by a removable coupling member which consolidated by located on the outer surface side between the flanges plates.
[0010]
As a restraining method, bolts are installed on the opposing surface side of the upper and lower flange plates of the seismic isolation device, which is disposed on the foundation of the building frame, and in which the laminated rubber having a laminated structure of rubber and steel plates is disposed between the upper and lower flange plates. A fixed fixing member formed in the shape of an angle is connected to the fixing member by a removable connecting member positioned on the outer surface side of the seismic isolation device, and a pair of upper and lower fixing members connected by the connecting member are vertically moved. It is fixed to the opposite surface side of the flange plate, and the relative displacement of the upper and lower flange plates is restrained by the fixing member and the coupling member, and only the coupling member is removed and the restraint is released after the construction of the building frame is completed. To do.
[0011]
According to the first aspect of the present invention, it is possible to fix the seismic isolation device to the foundation with a simple structure by simply attaching a restraining member for restraining relative displacement between the upper and lower flange plates. Moreover, since the restraint member can be removed after the construction of the base isolation building is completed, the function of the base isolation device can be exhibited.
[0012]
In addition, since the restraining member is composed of a simple combination of a fixing member and a coupling member, the structure is simple, and in order to demonstrate the function of the seismic isolation device after the construction of the seismic isolation building is completed, only the coupling member is used. Since it only has to be removed, workability is good.
[0013]
According to the second aspect of the present invention, the relative displacement of the upper and lower flange plates can be restrained only by attaching a restraining member between the upper and lower flange plates. Even if a large load is applied, the seismic isolation device will not be deformed. In this case, it is only necessary to insert a pair of upper and lower fixing members connected by the coupling member between the upper and lower flange plates and fix them to the opposing surface side of the flange plate, so that the workability is good.
[0014]
Furthermore, since the fixing member is simultaneously fixed to the flange plate with the same bolt that fixes the flange plate to the foundation underground beam, no additional bolts are required to fix the fixing member. Since it can be fixed at the same time, the number of work steps does not increase.
[0015]
In addition, since the coupling member is attached to the fixed member so as to be located on the outer surface side of the seismic isolation device, after the construction of the building frame is completed, if only the coupling member is removed from the fixed member and removed, the restraint can be easily released. Can do. And since the removal of a coupling member can be performed from the outer side of a seismic isolation apparatus, work is easy.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal front view showing a first embodiment of a temporary restraining jig for a seismic isolation device according to the present invention, and FIG. 2 is a plan view with a part cut away, which is the same as the conventional example shown in FIGS. The same reference numerals are assigned to the components. In the structure in which the seismic isolation device 1 is disposed between the underground beams 4 and 5 of the base of the base isolation building, and in the structure in which the seismic isolation device 1 has the laminated rubber 2 disposed between the flange plates 3 and 3. Certain points are the same as in the past.
[0017]
In the seismic isolation device 1 configured as described above, the restraining member 10 that restrains the relative displacement of the flange plates 3 and 3 is disposed between the upper and lower flange plates 3 and 3. As shown in the perspective view of FIG. 5, the restraining member 10 includes a fixing member 11 that is fixed to the upper and lower flange plates 3 and 3 and a detachable coupling member 12 that connects the upper and lower fixing members 11. Constitute.
[0018]
The fixing member 11 is made of, for example, an L-shaped angle steel material or an assembled steel material, and a plurality of bolt holes 13 are formed in each of the horizontal portion 11a and the vertical portion 11b.
[0019]
The coupling member 12 is detachably attached to the outer side of the vertical portion 11b of the upper and lower fixing members 11 and couples the upper and lower fixing members 11. The coupling member 12 is made of flat steel and corresponds to the bolt hole 13. Bolt holes 14 were drilled in.
[0020]
In order to restrain the displacement of the seismic isolation device 1 using the restraining member 10, first, as shown in FIG. 5, a pair of upper and lower fixing members 11 are opposed to each other, and the coupling member 12 is disposed outside the vertical portion 11 b. , The bolt hole 13 and the bolt hole 14 are matched, the bolt 15 is inserted therein, and the fixing member 11 and the coupling member 12 are coupled by the bolt 15.
[0021]
The fixing member 11 to which the coupling member 12 thus coupled is attached is fitted between the flange plates 3 and 3, the horizontal portion 11 a of the fixing member 11 is brought into contact with the flange plates 3 and 3, and the bolt hole 7 and the bolt hole 13, and a bolt 8 is inserted therein to fix the fixing member 11 to the flange plate 3.
[0022]
Thereby, the restraining member 10 is fixed between the flange plates 3 and 3, and the relative displacement of the upper and lower flange plates 3 and 3 is prevented by the restraining member 10. Therefore, even if an earthquake occurs during construction or a large load is applied from above, the seismic isolation device 1 will not be deformed.
[0023]
When the seismic isolation device 1 has a round shape, for example, four sets of the restraining members 10 are arranged at symmetrical positions. 3 and 4, when the seismic isolation device 1 is a square type, for example, four sets of restraining members 10 are arranged one by one on each side. In addition, the example of arrangement | positioning of the restraint member 10 is not limited to this, You may arrange | position two sets by a different direction with respect to the seismic isolation apparatus 1 arrange | positioned in multiple numbers.
[0024]
In addition, the seismic isolation device 1 that is a target for disposing the restraining member 10 is not limited to the one under construction installed on the foundation, and can also be implemented on the way to the construction site, It is possible to prevent the seismic isolation device 1 from being deformed by an impact during transportation.
[0025]
When the construction of the base-isolated building is completed, or when the restraining member 10 is no longer necessary, if the bolt 15 is removed, only the coupling member 12 can be removed from the fixing member 11, thereby the upper and lower fixing members 11. , That is, the upper and lower flange plates 3 can be released, and the seismic isolation device 1 can function. Since the bolts 15 can be removed from the outer surface side of the seismic isolation device 1, the operation is easy.
[0026]
【The invention's effect】
As described above, the temporary restraint jig and restraint method of the seismic isolation device of the present invention can be used when the seismic isolation device is transported to the construction site of the seismic isolation building or during the construction of the seismic isolation building. Even if a vibration or a large load from the upper part of the seismic isolation device is applied to the seismic isolation device, the seismic isolation device made of laminated rubber is prevented from being deformed, ensuring the quality of the seismic isolation device and ensuring safety during construction. It can be secured.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view showing a first embodiment of a temporary restraining jig for a seismic isolation device according to the present invention.
FIG. 2 is a partially cutaway plan view showing a first embodiment of a temporary restraining jig of the seismic isolation device of the present invention.
FIG. 3 is a longitudinal front view showing a second embodiment of a temporary restraining jig of the seismic isolation device of the present invention.
FIG. 4 is a partially cutaway plan view showing a second embodiment of a temporary restraining jig of the seismic isolation device of the present invention.
FIG. 5 is a partially cutaway perspective view showing a method of attaching the temporary restraining jig of the seismic isolation device of the present invention.
FIG. 6 is a longitudinal sectional front view showing a first example of a conventional seismic isolation device.
FIG. 7 is a plan view showing a first example of a conventional seismic isolation device.
FIG. 8 is a longitudinal sectional front view showing a second example of a conventional seismic isolation device.
FIG. 9 is a plan view showing a second example of a conventional seismic isolation device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Seismic isolation device 2 ... Laminated rubber 3 ... Flange plate 4 ... Underground beam 5 ... Underground beam 6 ... Seismic isolation pit 7 ... Bolt hole 8 ... Bolt 9 ... Cap nut 10 ... Restraint member
11 ... Fixing member 11a ... Horizontal part
11b ... vertical part 12 ... coupling member
13 ... Bolt hole 14 ... Bolt hole
15 ... Bolt

Claims (3)

建物躯体の基礎に配設され、上下のフランジプレート間にゴムと鋼板の互層構造による積層ゴムを配設した免震装置において、前記上下のフランジプレートの相対的な変位を拘束するものとして、上下のフランジプレートにそれぞれボルトで固定されるアングル状に形成した固定部材と、該上下の固定部材に免震装置の外面側に位置させて連結する取り外し可能な結合部材とで構成する拘束部材をフランジプレート間に取り外し可能に取り付けたことを特徴とする免震装置の仮設用拘束治具。Disposed basis for building structures, in the vibration isolating apparatus which is disposed a laminated rubber by alternating layers structure of the rubber and the steel sheet between the upper and lower flanges plates, as to restrain the relative displacement of the upper and lower flanges plate, vertical of a fixing member formed in an angle shape to be fixed at each bolt to the flange plate, the restraining member constituted by a removable coupling member which consolidated by positioning the outer surface side of the isolator to a fixed member of the upper and lower A temporary restraining jig for a seismic isolation device, which is detachably mounted between flange plates. 建物躯体の基礎に配設され、上下のフランジプレート間にゴムと鋼板の互層構造による積層ゴムを配設した免震装置の、前記上下のフランジプレートの対向面側にそれぞれボルトで固定されるアングル状に形成した固定部材を該固定部材に免震装置の外面側に位置させて取り付けた取り外し可能な結合部材で連結し、この結合部材で連結された上下一対の固定部材を上下のフランジプレートの対向面側にそれぞれ固定して、固定部材および結合部材で上下のフランジプレートの相対的変位を拘束し、建物躯体の施工完成後に結合部材のみを取り外し拘束を解除することを特徴とする免震装置の拘束方法。Disposed basis for building structures, the upper and lower flanges plate between the vibration isolating apparatus which is disposed a laminated rubber by alternating layers structure of the rubber and the steel sheet, the angle is fixed at each bolt on the opposite surface side of the upper and lower flanges plate The fixing member formed in a shape is connected to the fixing member by a detachable coupling member positioned on the outer surface side of the seismic isolation device, and the pair of upper and lower fixing members coupled by the coupling member are connected to the upper and lower flange plates. A seismic isolation device characterized in that it is fixed on the opposite surface side, the relative displacement of the upper and lower flange plates is restrained by the fixing member and the coupling member, and only the coupling member is removed and the restraint is released after the construction of the building frame is completed. Restraint method. 固定部材は、フランジプレートを基礎の地中梁に固定するボルトでフランジプレートに固定される請求項２に記載の免震装置の拘束方法。  The seismic isolation device restraining method according to claim 2, wherein the fixing member is fixed to the flange plate with a bolt that fixes the flange plate to the foundation underground beam.
JP2002088461A 2002-03-27 2002-03-27 Temporary restraint jig for seismic isolation device and restraint method Expired - Fee Related JP3822125B2 (en)

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JP2006037422A (en) * 2004-07-23 2006-02-09 Kyoritsu Construction Co Ltd Base-isolated structure construction method
JP4486455B2 (en) * 2004-09-17 2010-06-23 株式会社竹中工務店 Seismic isolation device installation unit and method for installing and manufacturing the unit
JP4486456B2 (en) * 2004-09-17 2010-06-23 株式会社竹中工務店 Seismic isolation device installation unit
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