JP4625302B2 - Replacing seismic isolation buildings and seismic isolation devices - Google Patents

Replacing seismic isolation buildings and seismic isolation devices Download PDF

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JP4625302B2
JP4625302B2 JP2004297743A JP2004297743A JP4625302B2 JP 4625302 B2 JP4625302 B2 JP 4625302B2 JP 2004297743 A JP2004297743 A JP 2004297743A JP 2004297743 A JP2004297743 A JP 2004297743A JP 4625302 B2 JP4625302 B2 JP 4625302B2
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seismic isolation
column
isolation device
jack
installation jig
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幸弘 島野
英顯 椿
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Takenaka Corp
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Description

本発明は、柱の長手方向の一部に免震装置を設置した免震建物と免震装置の取替え方法に関する。   The present invention relates to a seismic isolation building in which a seismic isolation device is installed in a part of a longitudinal direction of a column and a method for replacing the seismic isolation device.

一般に、積層ゴムを用いた免震装置は、火事や水害等の災害事故など、何らかの原因によって損傷が生じた場合に交換をする必要があり、免震建物としては、これらの異常事態に備えて、免震装置の交換が可能な状態に構築することが必要とされている。そのため、従来の免震建物では、特許文献１，２にも開示されているように、免震装置の周囲に、免震装置の交換作業に用いるジャッキの設置スペースを形成していた。   In general, seismic isolation devices using laminated rubber must be replaced in the event of damage due to some cause, such as a fire or flood disaster. As a seismic isolation building, prepare for these abnormal situations. Therefore, it is necessary to construct a seismic isolation device that can be replaced. Therefore, in the conventional seismic isolation building, as disclosed in Patent Documents 1 and 2, a jack installation space used for exchanging the seismic isolation device is formed around the seismic isolation device.

ところで、特許文献１，２の免震建物は、基礎と建物下端との間に免震装置を設置したいわゆる基礎免震であり、図１の（Ａ）に示すように、免震層は、上下幅Ｈが狭く、人が頻繁に出入りする部屋でもないから、免震装置２の周囲に、ジャッキ設置用のコンクリートの塊が存在しても、さほど支障はない。   By the way, the seismic isolation buildings of Patent Documents 1 and 2 are so-called basic seismic isolation systems in which a seismic isolation device is installed between the foundation and the lower end of the building, and as shown in FIG. Since the vertical width H is narrow and it is not a room where people frequently go in and out, even if there is a lump of concrete for jack installation around the seismic isolation device 2, there is no problem.

しかしながら、図１の（Ｂ），（Ｃ）に示すように、中間階に免震層を配置したいわゆる中間階免震では、柱１の長手方向の一部に免震装置２を設置することにより、免震層の上下幅Ｈを一般階と同様な階高に設定して、免震層も人の出入りする部屋として利用することが多く、このようなケースでは、免震装置２の周囲に、数十年に一度、発生するか、発生しないかも知れない異常事態に備えて、ジャッキ設置用のコンクリート塊を存在させることは、空間利用の面で好ましくない。   However, as shown in (B) and (C) of FIG. 1, in the so-called middle floor seismic isolation in which a seismic isolation layer is arranged on the intermediate floor, the seismic isolation device 2 is installed in a part of the longitudinal direction of the column 1. Therefore, the vertical width H of the seismic isolation layer is set to the same level as the general floor, and the seismic isolation layer is often used as a room for people to enter and exit. In addition, it is not preferable from the viewpoint of space utilization that a concrete block for jack installation exists in preparation for an abnormal situation that may or may not occur once every several decades.

例えば、図８に示すように、柱１の長手方向の一部に免震装置２を設置して階高を確保した従来の中間階免震の建物では、必要な時に免震装置２の両側にジャッキ５を設置できるように、免震層における柱１の太さＬ１を一般階の柱１の太さＬ２より太くしているが、この太くした柱１の断面部分は、ジャッキアップする際以外は利用されないスペースであり、将来、発生するかも知れない異常事態に対処するだけの目的で、予め、このようなジャッキ設置スペースを設けることは、柱周りの空間を有効利用する上で妨げとなるのである。   For example, as shown in FIG. 8, in a conventional intermediate-floor seismic isolation building in which a seismic isolation device 2 is installed in a part of the longitudinal direction of the pillar 1 to secure a floor height, both sides of the seismic isolation device 2 are used when necessary. The thickness L1 of the pillar 1 in the seismic isolation layer is made thicker than the thickness L2 of the pillar 1 on the general floor so that the jack 5 can be installed in the seismic isolation layer. It is a space that is not used except for the provision of such a jack installation space in advance for the purpose of dealing with abnormal situations that may occur in the future. It becomes.

尚、特許文献３によって、免震装置の据付けや点検交換時に、上部構造を支持するサポートやジャッキを不要にする免震装置の施工方法が提案されているが、これは、免震装置を上下方向から着脱すること、換言すれば、免震装置の真上に柱が存在しないことを前提とする技術であり、柱の長手方向の一部に免震装置を設置した免震建物には適用不能である。   In addition, Patent Document 3 proposes a construction method of a seismic isolation device that eliminates the need for a support and jack for supporting the upper structure when installing or inspecting and replacing the seismic isolation device. This technology is based on the premise that there is no column directly above the seismic isolation device, and is applicable to seismic isolation buildings with a seismic isolation device installed in part of the longitudinal direction of the column. It is impossible.

特開平１１−１８２０５５号公報JP-A-11-182055 特開平１０−８８８２４号公報JP-A-10-88824 特開２００２−１８８３１８号公報JP 2002-188318 A

本発明は、上記の点に留意して成されたものであって、柱周りの空間の有効利用が可能となる免震建物と免震装置の取替え方法を提供することを課題とする。   The present invention has been made in consideration of the above points, and an object of the present invention is to provide a method for exchanging a seismic isolation building and a seismic isolation device that enables effective use of a space around a column.

上記の課題を解決するために、本発明が講じた技術的手段は、次の通りである。即ち、請求項１に記載の発明による免震建物は、柱の長手方向の一部に免震装置を設置した免震建物であって、将来の免震装置の交換に備えて柱の側面に、ねじ孔付き金物とそれらを一体化し補強する金物等から構成された免震装置交換作業用のジャッキ設置冶具の取付け部
を予め柱コンクリートに埋設された状態に設けることにより、ジャッキ設置冶具の取付け部が設けられた柱部分の断面積を小さくしたことを特徴としている。 In order to solve the above problems, the technical means taken by the present invention are as follows. That is, the seismic isolation building according to the invention of claim 1 is a seismic isolation building in which a seismic isolation device is installed in a part of the longitudinal direction of the column, and is provided on the side of the column in preparation for future replacement of the seismic isolation device. By installing the mounting part of the jack installation jig for the seismic isolation device replacement work composed of the hardware with screw holes and the hardware that integrates and reinforces them, the jack installation jig is installed in the state embedded in the column concrete beforehand. It is characterized in that the cross-sectional area of the pillar portion provided with the portion is reduced.

尚、請求項１に記載の発明において、柱の長手方向の一部に免震装置を設置するにあたっては、請求項２に記載のように、柱頭部のみに設置してもよく、請求項３に記載のように、柱脚部のみに設置してもよい。また、請求項１に記載の発明は、請求項４に記載のように、免震装置が柱の中間部のみに設置され、免震装置の上下両側に位置する柱部分の側面に夫々ジャッキ設置冶具の取付け部が設けられている場合と、請求項５に記載のように、免震装置が柱の中間部のみに設置され、免震装置の上側又は下側に位置する柱部分の側面にジャッキ設置冶具の取付け部が設けられ、取付け部が設けられた上側又は下側の柱部分だけの断面積を小さくしている場合とを包含している。   In the invention described in claim 1, when installing the seismic isolation device in a part of the longitudinal direction of the column, it may be installed only in the column head as described in claim 2. As described in, it may be installed only on the column base. Further, in the invention described in claim 1, as described in claim 4, the seismic isolation device is installed only in the middle part of the column, and jacks are installed on the side surfaces of the column portions located on the upper and lower sides of the seismic isolation device, respectively. When the jig mounting part is provided, and as described in claim 5, the seismic isolation device is installed only in the middle part of the column, and on the side of the column portion located above or below the seismic isolation device. This includes a case where a mounting portion of the jack installation jig is provided, and the cross-sectional area of only the upper or lower column portion provided with the mounting portion is reduced.

請求項６に記載の発明による免震装置の取替え方法は、請求項１〜５の何れかに記載の免震建物において、柱の側面に予め設けられている取付け部にジャッキ設置冶具を取付け、当該ジャッキ設置冶具にジャッキを設置して、免震装置の取替え作業を行うことを特徴としている。 In the seismic isolation building according to any one of claims 1 to 5, the replacement method of the seismic isolation device according to the invention of claim 6 is a method of attaching a jack installation jig to a mounting portion provided in advance on a side surface of a column. A jack is installed in the jack installation jig, and the seismic isolation device is replaced.

請求項１〜４に記載の発明によれば、ねじ孔付き金物とそれらを一体化し補強する金物等から構成された取付け部が予め柱コンクリートに埋設された状態に設けられているので、免震装置の交換が必要な時に、予め柱側面に設けられた取付け部にジャッキ設置冶具を取り付けて、ジャッキを設置することができるが、通常時には、柱周りにジャッキ設置スペースがないため、取付け部が設けられた柱部分の太さが細くなり、柱周りの空間の有効利用が可能となる。 According to the first to fourth aspects of the present invention, the mounting portion composed of the hardware with screw holes and the hardware that integrates and reinforces them is provided in a state of being embedded in the column concrete in advance. When it is necessary to replace the device, it is possible to install a jack by attaching a jack installation jig to the mounting part provided on the side of the column in advance, but normally there is no jack installation space around the column, so there is no mounting part. The thickness of the provided pillar portion is reduced, and the space around the pillar can be effectively used.

免震層の用途や階高によっては、請求項５に記載のように、免震装置を柱の中間部のみに設置し、免震装置の上側又は下側に位置する柱部分の側面にジャッキ設置冶具の取付け部を設けて実施すれば、取付け部が設けられた上側又は下側の柱部分だけが他方の柱部分よりも細くなり、細くなった側の柱周り空間の有効利用が可能となる。   Depending on the use of the seismic isolation layer and the floor height, as described in claim 5, the seismic isolation device is installed only in the middle part of the column, and the jack is placed on the side of the column part located above or below the seismic isolation device. If the installation part of the installation jig is provided and implemented, only the upper or lower column part provided with the attachment part is thinner than the other column part, and it is possible to effectively use the space around the column on the narrowed side. Become.

また、請求項６に記載の発明によれば、免震装置の交換が必要な時に、予め柱側面に設けられた請求項１に記載の構成よりなる取付け部にジャッキ設置冶具を取り付け、当該冶具にジャッキを設置して免震装置の取替え作業を行うことができる。この発明において、冶具に設置したジャッキを用いて、免震装置の取替え作業を行うにあたっては、免震層の上部構造を微小距離ジャッキアップして、免震装置を抜き取るといった一般的な方法の他、特許文献１に記載のように、上部構造をジャッキアップすることなくジャッキで支持し、積層ゴムを水平方向から切断して抜き取る方法や、特許文献２に記載のように、上部構造をジャッキアップすることなくジャッキで支持した状態で、免震装置を冷却することにより、積層ゴムを熱収縮させて抜き取る方法など、種々の具体的な方法を採用できる。 According to the invention described in claim 6, when the seismic isolation device needs to be replaced, the jack installation jig is attached to the mounting portion having the structure according to claim 1 provided in advance on the column side surface, A seismic isolation device can be replaced by installing a jack. In this invention, when replacing the seismic isolation device using the jack installed on the jig, in addition to a general method of extracting the seismic isolation device by jacking up the superstructure of the seismic isolation layer by a small distance. As described in Patent Document 1, the upper structure is supported by a jack without jacking up, and the laminated rubber is cut and removed from the horizontal direction, or the upper structure is jacked up as described in Patent Document 2. By cooling the seismic isolation device in a state where it is supported by a jack without doing so, various specific methods such as a method of heat-shrinking and removing the laminated rubber can be adopted.

図２は本発明に係る免震建物の免震装置交換作業時の状態を例示する。この免震建物は、図１の（Ｂ），（Ｃ）に示したような中間階に免震層を配置したいわゆる中間階免震の建物であって、免震層における柱１の長手方向の一部に、図２の例では、柱頭部のみに積層ゴムを用いた免震装置２が設置されている。そして、免震層における柱１の両側面に、免震装置取替え用のジャッキ設置冶具３の取付け部４を設けることにより、冶具３の取付け部４が設けられた柱部分１ａの断面積を小さくしてある。具体的には、柱部分１ａの太さＬ１を、一般階の柱の太さＬ２と同程度に設定してある。   FIG. 2 illustrates the state of the seismic isolation device replacement work for the seismic isolation building according to the present invention. This base isolation building is a so-called intermediate floor base isolation building in which base isolation layers are arranged on the intermediate floor as shown in FIGS. 1B and 1C, and the longitudinal direction of the column 1 in the base isolation layer In the example of FIG. 2, the seismic isolation device 2 using the laminated rubber is installed only on the column head. And the cross-sectional area of the column part 1a in which the attachment part 4 of the jig 3 was provided is made small by providing the attachment part 4 of the jack installation jig 3 for seismic isolation apparatus replacement | exchange in the both sides | surfaces of the pillar 1 in a seismic isolation layer. It is. Specifically, the thickness L1 of the pillar portion 1a is set to be approximately the same as the thickness L2 of the pillar on the general floor.

ジャッキ設置冶具３は、適宜の構成で実施され、例えば、ジャッキ５の一端を支持する
水平板部３ａと、柱部分１ａの側面に対向する垂直板部３ｂと、両板部３ａ，３ｂに連結された補強リブ３ｃ等で具現され、ボルト６等によって取付け部４に着脱される。取付け部４は、適宜の構成で実施され、例えば、柱部分１ａがＲＣ造やＳＲＣ造である場合には、柱コンクリートに埋設されるねじ孔付き金具４ａと、それらを一体化し補強する金物４ｂ等によって具現される。 The jack installation jig 3 is implemented with an appropriate configuration, and is connected to, for example, a horizontal plate portion 3a that supports one end of the jack 5, a vertical plate portion 3b that faces the side surface of the column portion 1a, and both plate portions 3a and 3b. The reinforcing ribs 3c and the like are embodied, and are attached to and detached from the attachment portion 4 with bolts 6 or the like. The mounting portion 4 is implemented with an appropriate configuration. For example, when the column portion 1a is made of RC or SRC, a fitting 4a with a screw hole embedded in the column concrete and a metal piece 4b that integrates and reinforces them. Etc.

上記の構成によれば、免震装置２の交換が必要な時には、予め柱部分１ａの両側面に設けられている取付け部４に、図２に示すように、ジャッキ設置冶具３を取り付けて、ジャッキ５を設置することができるが、通常時には、ジャッキ設置冶具３が取り外されているので、柱周りにジャッキ設置スペース（ジャッキ設置冶具３の両側への張出し量に対応する柱部分）Ｓがないため、柱周りの空間の有効利用が可能となる。   According to said structure, when replacement | exchange of the seismic isolation apparatus 2 is required, as shown in FIG. 2, the jack installation jig 3 is attached to the attachment part 4 previously provided in the both sides | surfaces of the pillar part 1a, Although the jack 5 can be installed, since the jack installation jig 3 is normally removed, there is no jack installation space (column portion corresponding to the amount of extension to both sides of the jack installation jig 3) S around the column. Therefore, the space around the pillar can be used effectively.

免震装置２の交換は、例えば、図２に示す状態から、前記ジャッキ５で免震層の上部構造を微小距離ジャッキアップして、免震装置２を手前に抜き取るといった方法によって行われるが、特許文献１に記載のように、上部構造をジャッキアップすることなくジャッキ５で支持し、積層ゴムを水平方向から切断して抜き取る方法や、特許文献２に記載のように、上部構造をジャッキアップすることなくジャッキ５で支持した状態で、免震装置２を冷却することにより、積層ゴムを熱収縮させて抜き取る方法など、他の方法を採用してもよい。   The replacement of the seismic isolation device 2 is performed by, for example, a method in which the upper structure of the seismic isolation layer is jacked up by a small distance from the state shown in FIG. As described in Patent Document 1, the upper structure is supported by the jack 5 without being jacked up, and the laminated rubber is cut and extracted from the horizontal direction, or the upper structure is jacked up as described in Patent Document 2. Other methods may be employed such as a method in which the laminated rubber is thermally contracted and extracted by cooling the seismic isolation device 2 while being supported by the jack 5 without doing so.

尚、図２に示すように、梁７の下面をジャッキ５で支持する場合、通常、梁幅は柱１より細いため、柱１の両側に夫々複数台のジャッキ５を配置する必要がある場合には、図３、図４に示すように、梁７の端部を拡幅７ａしておくことになる。   As shown in FIG. 2, when the lower surface of the beam 7 is supported by the jack 5, the beam width is usually narrower than that of the column 1, and thus it is necessary to arrange a plurality of jacks 5 on both sides of the column 1. As shown in FIGS. 3 and 4, the end portion of the beam 7 is widened 7a.

図５は、他の実施形態を示し、免震装置２を柱脚部のみに設置した点に特徴がある。この場合には、前記取付け部４が柱脚部の両側面に設けられ、ジャッキ設置冶具３は下向きに取り付けられることになる。その他の構成、作用は、図２〜図４の実施形態と同じであるため、同一構成部材に同一符号を付し、説明を省略する。   FIG. 5 shows another embodiment, which is characterized in that the seismic isolation device 2 is installed only on the column base. In this case, the attachment portions 4 are provided on both side surfaces of the column base portion, and the jack installation jig 3 is attached downward. Since other configurations and operations are the same as those of the embodiment of FIGS. 2 to 4, the same components are denoted by the same reference numerals, and description thereof is omitted.

図６は、他の実施形態を示し、免震装置２を柱１の中間部のみに設置し、免震装置２の上下両側に位置する柱部分１ａ，１ｂの両側面に夫々ジャッキ設置冶具３の取付け部４を設けた点に特徴がある。この実施形態によれば、ジャッキ設置冶具３及び取付け部４の数は増えるが、取付け部４の床面からの高さをジャッキ設置冶具３の取付け作業がしやすい高さに設定できる利点がある。その他の構成、作用は、図５の実施形態と同じであるため、同一構成部材に同一符号を付し、説明を省略する。   FIG. 6 shows another embodiment, in which the seismic isolation device 2 is installed only in the middle portion of the column 1, and the jack installation jig 3 is provided on both side surfaces of the column portions 1 a and 1 b located on the upper and lower sides of the seismic isolation device 2. This is characterized in that the mounting portion 4 is provided. According to this embodiment, although the number of the jack installation jig 3 and the attachment part 4 increases, there exists an advantage which can set the height from the floor surface of the attachment part 4 to the height which the attachment operation of the jack installation jig 3 is easy. . Since other configurations and operations are the same as those in the embodiment of FIG. 5, the same reference numerals are given to the same structural members, and description thereof is omitted.

図７は、他の実施形態を示し、免震装置２を柱１の中間部のみに設置し、免震装置２の下側に位置する柱部分１ａの両側面にジャッキ設置冶具３の取付け部４を設けた点に特徴がある。この実施形態によれば、免震装置２の上側の柱部分１ｂは、下面をジャッキ５で支持する必要上、取付け部４が設けられている下側の柱部分１ａよりも、ジャッキ設置スペースＳに相当する分、太くなるが、下側の柱部分１ａにはジャッキ設置スペースＳがないため、細くなった下側の柱周り空間の有効利用が可能となる。例えば、免震層を駐車場として利用する場合、床面から免震装置２までの高さＴを自動車の高さ以上に設定することで、柱周りの床面を広く利用できることになる。また、免震装置２を柱１の中間部に設置しても、図６の実施形態のように、ジャッキ設置冶具３及び取付け部４の数が増えないので、施工が容易であり、コスト面でも有利である。その他の構成、作用は、図２や図６の実施形態と同じであるため、同一構成部材に同一符号を付し、説明を省略する。   FIG. 7 shows another embodiment, in which the seismic isolation device 2 is installed only in the middle portion of the column 1, and the attachment portions of the jack installation jig 3 are installed on both side surfaces of the column portion 1 a located below the seismic isolation device 2. 4 is characteristic. According to this embodiment, the upper column portion 1b of the seismic isolation device 2 needs to support the lower surface with the jack 5, and therefore the jack installation space S is lower than the lower column portion 1a where the mounting portion 4 is provided. However, since there is no jack installation space S in the lower pillar portion 1a, it is possible to effectively use the thinner lower pillar surrounding space. For example, when the seismic isolation layer is used as a parking lot, the floor surface around the pillar can be widely used by setting the height T from the floor surface to the seismic isolation device 2 equal to or higher than the height of the automobile. In addition, even if the seismic isolation device 2 is installed in the middle part of the pillar 1, the number of jack installation jigs 3 and attachment parts 4 does not increase as in the embodiment of FIG. But it is advantageous. Other configurations and operations are the same as those of the embodiment of FIG. 2 and FIG. 6, and thus the same components are denoted by the same reference numerals and description thereof is omitted.

図示しないが、図７の上下を逆にした実施形態で、即ち、免震装置２を柱１の中間部のみに設置し、免震装置２の上側に位置する柱部分１ａの両側面にジャッキ設置冶具３の取
付け部４を設けて実施することもできる。 Although not shown in the figure, in the embodiment in which the top and bottom of FIG. It can also be carried out by providing a mounting portion 4 of the installation jig 3.

以上、本発明を図示の実施形態に基づいて説明したが、本発明は図示の実施形態だけに限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。例えば、図示の実施形態では、何れも、柱１の両側面にジャッキ設置冶具３の取付け部４を設けたが、免震装置２の抜取り方向を除く３方向の側面に取付け部４を設けて実施してもよい。   Although the present invention has been described based on the illustrated embodiment, the present invention is not limited to the illustrated embodiment, and can be implemented in various modes without departing from the gist of the present invention. Of course. For example, in the illustrated embodiment, the attachment portions 4 of the jack installation jig 3 are provided on both side surfaces of the pillar 1, but the attachment portions 4 are provided on the side surfaces in three directions excluding the extraction direction of the seismic isolation device 2. You may implement.

免震建物の説明図である。It is explanatory drawing of a seismic isolation building. 本発明に係る免震建物を例示する要部の側面図である。It is a side view of the principal part which illustrates the seismic isolation building which concerns on this invention. 本発明に係る免震建物の他の例を示す要部の平面図である。It is a top view of the principal part which shows the other example of the seismic isolation building which concerns on this invention. 図３の実施形態における要部の側面図である。It is a side view of the principal part in embodiment of FIG. 本発明に係る免震建物の他の例を示す要部の側面図である。It is a side view of the principal part which shows the other example of the seismic isolation building which concerns on this invention. 本発明に係る免震建物の他の例を示す要部の側面図である。It is a side view of the principal part which shows the other example of the seismic isolation building which concerns on this invention. 本発明に係る免震建物の他の例を示す要部の側面図である。It is a side view of the principal part which shows the other example of the seismic isolation building which concerns on this invention. 従来例を示す要部の側面図である。It is a side view of the principal part which shows a prior art example.

１ 柱
１ａ，１ｂ 柱部分
２ 免震装置
３ ジャッキ設置冶具
４ 取付け部
５ ジャッキ DESCRIPTION OF SYMBOLS 1 Pillar 1a, 1b Pillar part 2 Seismic isolation device 3 Jack installation jig 4 Mounting part 5 Jack

Claims (6)

柱の長手方向の一部に免震装置を設置した免震建物であって、将来の免震装置の交換に備えて柱の側面に、ねじ孔付き金物とそれらを一体化し補強する金物等から構成された免震装置交換作業用のジャッキ設置冶具の取付け部を予め柱コンクリートに埋設された状態に設けることにより、ジャッキ設置冶具の取付け部が設けられた柱部分の断面積を小さくしたことを特徴とする免震建物。 A seismically isolated building with a seismic isolation device installed in a part of the longitudinal direction of the column. From the hardware that integrates and reinforces them with screw holes on the side of the column in preparation for future seismic isolation device replacement By providing the mounting part of the constructed jack installation jig for exchanging seismic isolation equipment in a state embedded in the column concrete in advance , the cross-sectional area of the column part provided with the mounting part of the jack installation jig was reduced. A seismically isolated building. 免震装置が柱頭部のみに設置されている請求項１に記載の免震建物。   The seismic isolation building according to claim 1, wherein the seismic isolation device is installed only on the column head. 免震装置が柱脚部のみに設置されている請求項１に記載の免震建物。   The seismic isolation building according to claim 1, wherein the seismic isolation device is installed only on the column base. 免震装置が柱の中間部のみに設置され、免震装置の上下両側に位置する柱部分の側面に夫々ジャッキ設置冶具の取付け部が設けられている請求項１に記載の免震建物。   The seismic isolation building according to claim 1, wherein the seismic isolation device is installed only in the middle portion of the column, and a mounting portion for a jack installation jig is provided on each side surface of the column portion located on both upper and lower sides of the seismic isolation device. 免震装置が柱の中間部のみに設置され、免震装置の上側又は下側に位置する柱部分の側面にジャッキ設置冶具の取付け部が設けられ、取付け部が設けられた上側又は下側の柱部分だけの断面積を小さくした請求項１に記載の免震建物。   The seismic isolation device is installed only in the middle part of the column, the mounting part of the jack installation jig is provided on the side of the column part located on the upper side or the lower side of the seismic isolation device, and the upper or lower side where the mounting part is provided The seismic isolation building according to claim 1, wherein the cross-sectional area of only the column portion is reduced. 請求項１〜５の何れかに記載の免震建物において、柱の側面に予め設けられている取付け部にジャッキ設置冶具を取付け、当該ジャッキ設置冶具にジャッキを設置して、免震装置の取替え作業を行うことを特徴とする免震装置の取替え方法。
The seismic isolation building according to any one of claims 1 to 5, wherein a jack installation jig is attached to a mounting portion provided in advance on a side surface of the column, and the jack is installed on the jack installation jig, so that the seismic isolation device is replaced. A method of replacing a seismic isolation device characterized by performing work.
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JP2017036559A (en) * 2015-08-07 2017-02-16 前田建設工業株式会社 Seismic isolator replacement method
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JPH1122208A (en) * 1997-07-04 1999-01-26 Hazama Gumi Ltd Installation method for base-isolating lamination rubber
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