JP2000297559A - Base isolation building - Google Patents

Base isolation building

Info

Publication number
JP2000297559A
JP2000297559A JP11106240A JP10624099A JP2000297559A JP 2000297559 A JP2000297559 A JP 2000297559A JP 11106240 A JP11106240 A JP 11106240A JP 10624099 A JP10624099 A JP 10624099A JP 2000297559 A JP2000297559 A JP 2000297559A
Authority
JP
Japan
Prior art keywords
seismic isolation
foundation
isolation device
building
base
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
Application number
JP11106240A
Other languages
Japanese (ja)
Other versions
JP3781916B2 (en
Inventor
Tadashi Nagase
正 長瀬
Satoru Kusaka
哲 日下
Koji Nakahara
洸二 中原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takenaka Komuten Co Ltd
Original Assignee
Takenaka Komuten Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takenaka Komuten Co Ltd filed Critical Takenaka Komuten Co Ltd
Priority to JP10624099A priority Critical patent/JP3781916B2/en
Publication of JP2000297559A publication Critical patent/JP2000297559A/en
Application granted granted Critical
Publication of JP3781916B2 publication Critical patent/JP3781916B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

PROBLEM TO BE SOLVED: To perform a base isolation device replacement operation efficiently in short time. SOLUTION: This base isolation building is formed so that a base isolation pit B1 formed by installing a base isolation device B2 on a base 1 and a building main body B3 supported by the base isolation device B2 are provided and a base beam 5 of the base isolation pit B1 is formed of a reverse beam. At least a part of the base beam 5 is formed separably and so that a laterally movable moving passage 9 for the base isolation device B2 can be assured in a separation portion S of the base beam 5.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、基礎上に免震装置
を設置して形成した免震ピットと、前記免震装置によっ
て支持される建物本体とを設け、前記免震ピットの基礎
梁を、逆梁で構成してある免震建物に関する。
The present invention relates to a seismic isolation pit formed by installing a seismic isolation device on a foundation, a building body supported by the seismic isolation device, and a base beam of the seismic isolation pit. , Regarding seismically isolated buildings composed of inverted beams.

【0002】[0002]

【従来の技術】従来、この種の免震建物は、図11に示
すように、免震ピットB1に前記免震装置B2を配置し
てある。そして、免震ピットB1の基礎梁5は、逆梁と
することで、基礎スラブ4より下方の地盤掘削を少なく
して、工期の短縮化・コストダウンを図れるようにして
ある。従って、免震ピットB1内には、前記基礎梁5が
基礎スラブ4上に突出する状態に横たわって設けられて
いる(例えば、特開平10−2126号公報参照)。
2. Description of the Related Art Conventionally, in a seismic isolation building of this kind, as shown in FIG. 11, the seismic isolation device B2 is disposed in a seismic isolation pit B1. The base beam 5 of the seismic isolation pit B1 is a reverse beam, so that the ground excavation below the base slab 4 is reduced, thereby shortening the construction period and reducing costs. Therefore, the foundation beam 5 is provided in the seismic isolation pit B1 so as to protrude above the foundation slab 4 (for example, see Japanese Patent Application Laid-Open No. 10-2126).

【0003】[0003]

【発明が解決しようとする課題】そもそも、前記免震装
置は、建物に免震機能を付加するものであるから、免震
建物においては、その性能を充分発揮できる状態に維持
する必要があり、免震装置のメンテナンスを実施した
り、場合によっては取り替えを実施する必要がある。こ
の免震装置の取替作業は、前記免震装置設置部分をジャ
ッキ等で仮受けした状態で免震装置を取り外し、その後
に取替用の免震装置をセットするといった手順で実施さ
れるが、その際、取替用の免震装置や、取り外した免震
装置を免震ピットに出し入れするには、一般的に、免震
ピット上の建物本体の最下層スラブに設けられた搬入出
口を通して実施され、免震ピット内での免震装置の横移
動は、前記基礎梁を夫々乗り越えながら実施される。因
みに、前記搬入出口を、各免震装置設置部に対応させて
各別に設けることができれば、免震装置の移動時に上述
のように基礎梁を乗り越える必要はなくなる。しかし、
現実的には、前記搬入出口を多数箇所に設けることは平
面計画上困難で、特に、集合住宅等の建物においては、
建物の一端側に一箇所のみ搬入出口を設けてある場合が
多く、建物の多端側に設置された免震装置は、複数の基
礎梁を乗り越えながら移動させなければならない。上述
した従来の免震建物によれば、前記基礎梁が基礎スラブ
上に突出する状態に横たわって設けられているから、そ
の基礎梁を乗り越えるに際しては、その都度、チェーン
ブロックやリフター等を設置しながら免震装置を上げ下
げして実施しなければならず、免震装置の取替作業全体
に非常に手間がかかっていた。
In the first place, since the seismic isolation device adds a seismic isolation function to the building, it is necessary to maintain the seismic isolation building in a state where its performance can be sufficiently exhibited. It is necessary to carry out maintenance of the seismic isolation device and, in some cases, replacement. This seismic isolation device replacement work is carried out by removing the seismic isolation device while temporarily holding the seismic isolation device installation portion with a jack or the like, and then setting the replacement seismic isolation device. At that time, the seismic isolation device for replacement or the removed seismic isolation device can be taken in and out of the seismic isolation pit by generally using the loading / unloading port provided on the bottom slab of the building body on the seismic isolation pit. The lateral movement of the seismic isolation device in the seismic isolation pit is performed while each of the foundation beams is overcome. By the way, if the loading / unloading port can be separately provided corresponding to each seismic isolation device installation section, there is no need to go over the foundation beam as described above when the seismic isolation device moves. But,
Realistically, it is difficult to provide the loading / unloading port at a large number of places in a plan, especially in a building such as an apartment house.
In many cases, only one loading / unloading port is provided at one end of a building, and seismic isolation devices installed at multiple ends of the building must be moved over multiple foundation beams. According to the above-mentioned conventional seismic isolation building, the foundation beams are provided so as to protrude above the foundation slab. However, it was necessary to raise and lower the seismic isolation device, and the entire replacement work of the seismic isolation device was very troublesome.

【0004】従って、本発明の目的は、免震装置の取替
作業を効率よく、短時間に実施できる免震建物を提供す
るところにある。
Accordingly, it is an object of the present invention to provide a seismic isolation building which can efficiently and quickly replace a seismic isolation device.

【0005】[0005]

【課題を解決するための手段】請求項1の発明の特徴構
成は、図1・図4〜10に例示するごとく、基礎1上に
免震装置B2を設置して形成した免震ピットB1と、前
記免震装置B2によって支持される建物本体B3とを設
け、前記免震ピットB1の基礎梁5を、逆梁で構成して
ある免震建物において、前記基礎梁5は、その少なくと
も一部を分離自在に形成してあると共に、基礎梁5の分
離部分Sに、前記免震装置B2の横移動可能な移動路9
を確保自在に形成してあるところにある。請求項1の発
明の特徴構成によれば、基礎梁を逆梁にしてあることに
よる効果(基礎スラブより下方の地盤掘削を無くして、
工期の短縮化・コストダウンを図れる)を維持しなが
ら、基礎梁を分離して、その部分に、免震装置を横移動
可能な移動路を一時的に確保することが可能となる。従
って、前記免震装置の取替時には、前記移動路を通した
免震装置の横移動が可能となり、従来のように、基礎梁
部を乗り越えるために免震装置を上げたり下げたりする
必要が無くなり、効率的に免震装置の取替作業を実施す
ることが可能となる。また、前記免震装置の取替作業が
終わると前記分離部分を連結することによって基礎梁に
簡単に復元することが可能となる。
As shown in FIG. 1 and FIGS. 4 to 10, a characteristic structure of the invention according to claim 1 is that a seismic isolation pit B1 formed by installing a seismic isolation device B2 on a foundation 1 is provided. And a building body B3 supported by the seismic isolation device B2, wherein the foundation beam 5 of the seismic isolation pit B1 is formed of a reverse beam, and the foundation beam 5 is at least partially provided. Are formed so as to be separable, and a moving path 9 in which the seismic isolation device B2 can move laterally
Is formed so as to be freely secured. According to the characteristic configuration of the invention of claim 1, the effect of the foundation beam being the inverted beam (the ground excavation below the foundation slab is eliminated,
While shortening the construction period and reducing costs), it is possible to separate the foundation beam and temporarily secure a moving path in that part where the seismic isolation device can be moved laterally. Therefore, when replacing the seismic isolation device, the seismic isolation device can be moved laterally through the moving path, and it is necessary to raise or lower the seismic isolation device in order to get over the foundation beam as in the related art. It is possible to efficiently replace the seismic isolation device. In addition, when the replacement operation of the seismic isolation device is completed, it is possible to easily restore the base beam by connecting the separated portions.

【0006】請求項2の発明の特徴構成は、図1・図3
〜6に例示するごとく、前記基礎梁5の内、少なくとも
前記分離部分Sが属する部分は、鉄骨製であるところに
ある。請求項2の発明の特徴構成によれば、請求項1の
発明による作用効果を叶えることができるのに加えて、
分離・連結機構を設けるあたって、鉄骨を細工するだけ
で簡単に形成することができるとともに、分離・連結操
作が簡単な構造とすることが可能となる。更には、鉄筋
コンクリートに比べて軽量化できるため、基礎梁の分離
・連結の作業性を向上させることが可能となる。
FIG. 1 and FIG.
6 to 6, at least a portion to which the separation portion S of the foundation beam 5 belongs is made of a steel frame. According to the characteristic configuration of the second aspect of the invention, in addition to the effect of the first aspect of the invention,
In providing the separation / connection mechanism, it is possible to simply form the steel frame by simply working the steel frame, and it is possible to provide a structure in which the separation / connection operation is simple. Furthermore, since the weight can be reduced as compared with reinforced concrete, the workability of separating and connecting the foundation beams can be improved.

【0007】請求項3の発明の特徴構成は、図1・図3
〜5・図10に例示するごとく、前記分離部分Sは、基
礎梁5の長手方向の中央部に設定してあるところにあ
る。請求項3の発明の特徴構成によれば、請求項1又は
2の発明による作用効果を叶えることができるのに加え
て、基礎梁の内、長手方向の中央部は、地震荷重の作用
時や風荷重の作用時における作用応力が最も小さい部分
であることから、この部分の有効断面積を小さくするこ
とが可能となり、例えば、基礎梁を分離して、この中央
部で取り外すような構成をとる場合には、取外梁部をよ
り軽量化して、より簡単且つスピーディーに分離・連結
作業を実施できるようになる。更には、中央部の方が作
業空間を確保しやすいため、基礎梁の分離・連結操作を
より効率的に実施することができる。
The characteristic structure of the third aspect of the present invention is shown in FIGS.
As shown in FIG. 10, the separation portion S is set at the center of the foundation beam 5 in the longitudinal direction. According to the characteristic configuration of the third aspect of the invention, in addition to being able to achieve the function and effect of the first or second aspect of the invention, of the foundation beam, the central portion in the longitudinal direction can be used when an earthquake load is applied. Since the acting stress at the time of the action of the wind load is the smallest, it is possible to reduce the effective cross-sectional area of this part. For example, a configuration is adopted in which the foundation beam is separated and removed at the center. In this case, the weight of the detachment beam can be reduced, and the separation / connection operation can be performed more easily and speedily. Furthermore, since the work space is easier to secure in the central part, the separation and connection of the foundation beams can be performed more efficiently.

【0008】請求項4の発明の特徴構成は、図1に例示
するごとく、前記分離部分Sで基礎梁5から取り外され
る取外梁部7Bは、前記取外梁部7Bを載置して移動す
る取り外し具10をセット自在なセット空間11を、基
礎スラブ4との間に確保した状態に取り付けてあるとこ
ろにある。請求項4の発明の特徴構成によれば、請求項
1〜3の何れかの発明による作用効果を叶えることがで
きるのに加えて、取外梁部を基礎梁から分離操作する際
に、前記セット空間に前記取り外し具をセットして、よ
りスピーディーに取外梁部を分離することが可能とな
る。また、取り外した取外梁部を元の位置に連結する際
も、同様に効率的に作業することが可能となる。
As shown in FIG. 1, the characteristic feature of the invention according to claim 4 is that the removal beam portion 7B detached from the foundation beam 5 at the separation portion S moves with the removal beam portion 7B placed thereon. The mounting space 11 in which the removal tool 10 to be removed can be set is attached to the base slab 4 in a secured state. According to the characteristic configuration of the invention of claim 4, in addition to being able to achieve the function and effect of any of the inventions of claims 1 to 3, when the detachment beam part is separated from the foundation beam, By setting the removal tool in the set space, the removal beam portion can be separated more quickly. Also, when the detached detached beam portion is connected to the original position, the work can be efficiently performed similarly.

【0009】尚、上述のように、図面との対照を便利に
するために符号を記したが、該記入により本発明は添付
図面の構成に限定されるものではない。
Note that, as described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

【0010】[0010]

【発明の実施の形態】以下に本発明の実施の形態を図面
に基づいて説明する。尚、図面において従来例と同一の
符号で表示した部分は、同一又は相当の部分を示してい
る。
Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

【0011】図1・図3〜5は、免震装置B2を組み込
んだ免震建物Bの免震ピットB1部分を示すものであ
る。免震建物Bは、免震ピットB1の基礎フーチング
(基礎に相当)1上に設置した前記免震装置B2を介し
て、建物本体B3を支持する状態に形成してある。従っ
て、地震に伴う揺れが前記免震ピットB1に作用した場
合、前記免震装置B2によってその震動を緩和し、前記
建物本体B3の横揺れを低減できるものである。
FIGS. 1 and 3 to 5 show a seismic isolation pit B1 portion of a seismic isolation building B incorporating a seismic isolation device B2. The seismic isolation building B is formed so as to support the building body B3 via the seismic isolation device B2 installed on the foundation footing (corresponding to the foundation) 1 of the seismic isolation pit B1. Therefore, when the shaking caused by the earthquake acts on the seismic isolation pit B1, the vibration is reduced by the seismic isolation device B2, and the lateral shaking of the building body B3 can be reduced.

【0012】前記免震装置B2は、図2に示すように、
複数の金属製薄板2aとゴム製薄板2bとを交互に積層
させて一体化し、夫々の薄板2a・2bどうしが横方向
に層間変位自在に形成してあることによって、基礎フー
チング1と建物本体B3との横方向相対移動に抵抗しな
がら追従し、免震効果を発揮できるように構成してある
ものである。尚、前記各薄板2a・2bの縦芯部には、
夫々を貫通する状態に鉛製の棒状体2cを設けてあり、
前記各薄板2a・2bの層間変位に対するダンパー効果
をより増強できるように構成してある。尚、免震装置B
2は、前記基礎フーチング1、及び、建物本体B3と
は、それぞれボルトによって連結してあり、前記フーチ
ング1と建物本体B3間にジャッキを設置して、建物本
体B3の荷重を仮受けすると共に前記ボルトを取り外す
ことによって、免震装置B2を取り外すことができるよ
うに構成されている。因みに、当該免震装置B2は、定
期的にメンテナンスされると共に、所定のサイクルで新
しい免震装置B2と交換される。その交換の際は、建物
本体B3のスラブに設けられた搬入出口Hを通して、免
震ピットB1に出し入れされる(図3・図4参照)。
The seismic isolation device B2 is, as shown in FIG.
A plurality of metal thin plates 2a and rubber thin plates 2b are alternately laminated and integrated, and each of the thin plates 2a and 2b is formed so as to be freely displaceable between layers in the horizontal direction. It follows while resisting the relative movement in the lateral direction, and can exert the seismic isolation effect. In addition, in the vertical core part of each said thin plate 2a, 2b,
A rod-like body 2c made of lead is provided so as to penetrate each of them,
The thin plates 2a and 2b are configured so as to further enhance the damper effect against interlayer displacement. In addition, seismic isolation device B
2, the foundation footing 1 and the building body B3 are respectively connected by bolts, and a jack is installed between the footing 1 and the building body B3 to temporarily receive the load of the building body B3 and The seismic isolation device B2 can be removed by removing the bolt. Incidentally, the seismic isolation device B2 is periodically maintained, and is replaced with a new seismic isolation device B2 at a predetermined cycle. At the time of the replacement, the vehicle is put into and out of the seismic isolation pit B1 through the entrance H provided in the slab of the building body B3 (see FIGS. 3 and 4).

【0013】前記免震ピットB1は、図1・図3に示す
ように、前記基礎フーチング1と、周壁3と、基礎スラ
ブ4と、基礎梁5とを設けて構成してある。前記基礎フ
ーチング1は、支持杭6上に一体的に設けてあり、建物
本体B3の主要な柱の直下で、前記免震装置B2を介し
て建物荷重を支持できるように構成してある。前記周壁
3、及び、前記基礎スラブ4は、免震ピットB1の外殻
を形成するように構成してある。前記基礎梁5は、免震
ピットB1の外周部に配置された外梁5Aと、免震ピッ
トB1の内側に配置された内梁5Bとから構成され、何
れも、基礎スラブ4から上方に突出する形状に形成され
た逆梁で構成されている。従って、免震ピットB1内の
空間は、前記内梁5Bによって複数の小空間Vに仕切ら
れている。また、各梁が逆梁に形成してあることによっ
て、免震ピット形成のための地盤掘削は、基礎スラブ4
が形成できる深度まで実施すればよく、通常の梁形状
(スラブの下方に突出する梁形状)に比べて、掘削手間
の低減化を図ることができる。尚、前記周壁3・基礎ス
ラブ4・外梁5Aは、何れも鉄筋コンクリート製で形成
してある。また、前記内梁5Bについては、両端部は鉄
筋コンクリート製で構成してあると共に、中央部は、鉄
骨(具体例としては、H形鋼)7によって構成してあ
る。そして、その中央部H形鋼は、長手方向に三分割の
部材から構成してあり、両端部に位置する第一分割形鋼
7A・第三分割形鋼7Cの二部材の基端部は、内梁5B
両端部の鉄筋コンクリート部8に埋設してある。また、
両分割形鋼7A・7C間に位置する第二分割形鋼(取外
梁部に相当)7Bは、両分割形鋼7A・7Cとボルト連
結してあり、着脱自在に構成されている。従って、連結
ボルトを外すことによって、この第二分割形鋼7Bを分
離することが可能となる。前記第二分割形鋼7Bの設置
部分が、中梁5Bの分離部分Sとなり、第二分割形鋼7
Bを取り外すことによって、内梁5Bによって仕切られ
た前記小空間Vどうしが基礎スラブ4上で連続すること
になる(図3〜5参照)。因みに、前記第二分割形鋼7
Bの長さ寸法L1は、前記免震装置B2の最大幅寸法L
0より大きく設定してあり、前記分離部分Sを通して、
隣接する前記小空間V相互にわたって前記免震装置B2
を移動させることができるように構成してある。即ち、
この分離部分Sが、免震装置の横移動可能な移動路9と
なる。一方、前記鉄骨7は、内梁中央部に配置してある
ことにより、端部に比べて内部応力を小さく見積もるこ
とができ、鉄骨断面寸法は、前記鉄筋コンクリート部8
の断面寸法より小さく設定してある。また、鉄筋コンク
リート部8と鉄骨7とは、互いの部材軸芯が同一軸芯上
に位置する状態に配置してある。その結果、鉄骨7と基
礎スラブ4との間には、空間が形成された状態となる。
この空間は、前記鉄骨7を着脱する際に、例えば、リフ
ターや台車等の取り外し具10を挿入して鉄骨7を支持
しながら作業ができると共に、第二分割形鋼7Bを載置
したまま取り外し具10を移動させることによって、簡
単に内梁5Bの着脱操作を実施することが可能となる。
前記鉄骨7と基礎スラブ4との間の空間を、セット空間
11という(図1参照)。
As shown in FIGS. 1 and 3, the seismic isolation pit B1 is provided with the foundation footing 1, the peripheral wall 3, the foundation slab 4, and the foundation beam 5. The foundation footing 1 is provided integrally on a support pile 6 and is configured to be able to support a building load via the seismic isolation device B2 immediately below a main pillar of a building body B3. The peripheral wall 3 and the foundation slab 4 are configured to form an outer shell of the seismic isolation pit B1. The foundation beam 5 is composed of an outer beam 5A arranged on the outer periphery of the seismic isolation pit B1 and an inner beam 5B arranged inside the seismic isolation pit B1, both of which protrude upward from the foundation slab 4. It is constituted by the inverted beam formed in the shape to be. Therefore, the space in the seismic isolation pit B1 is partitioned into a plurality of small spaces V by the inner beams 5B. In addition, since each beam is formed as a reverse beam, excavation of the ground to form a seismic isolation pit is not required.
It is sufficient to carry out the process up to the depth at which the slab can be formed, and it is possible to reduce the labor for excavation as compared with a normal beam shape (a beam shape projecting below the slab). The peripheral wall 3, the foundation slab 4, and the outer beam 5A are all made of reinforced concrete. In addition, both ends of the inner beam 5B are made of reinforced concrete, and a central portion is made of a steel frame (specifically, H-section steel) 7. And the center part H-section steel is comprised from the member divided into three in the longitudinal direction, and the base end part of the two members of the 1st divided section steel 7A and the 3rd divided section steel 7C located in both ends is: Inner beam 5B
It is embedded in the reinforced concrete sections 8 at both ends. Also,
A second divided section steel (corresponding to a detachment beam section) 7B located between the divided sections 7A and 7C is connected to the divided sections 7A and 7C by bolts, and is configured to be detachable. Therefore, by removing the connecting bolt, it is possible to separate the second section steel 7B. The installation portion of the second split section steel 7B becomes the separation portion S of the center beam 5B, and the second split section steel 7B
By removing B, the small spaces V partitioned by the inner beams 5B are continuous on the base slab 4 (see FIGS. 3 to 5). Incidentally, the second divided steel 7
The length L1 of B is the maximum width L of the seismic isolation device B2.
It is set to be larger than 0, and through the separation portion S,
The seismic isolation device B2 extends over the adjacent small spaces V
Is configured to be able to be moved. That is,
This separated portion S becomes a movable path 9 in which the seismic isolation device can move laterally. On the other hand, since the steel frame 7 is disposed at the center of the inner beam, the internal stress can be estimated to be smaller than that at the end, and the cross-sectional dimension of the steel frame is smaller than that of the reinforced concrete section 8.
It is set smaller than the cross-sectional dimension of. Further, the reinforced concrete portion 8 and the steel frame 7 are arranged in such a manner that their member axes are located on the same axis. As a result, a space is formed between the steel frame 7 and the foundation slab 4.
In this space, when the steel frame 7 is attached and detached, for example, a work can be performed while supporting the steel frame 7 by inserting a removal tool 10 such as a lifter or a trolley, and can be removed while the second divided steel 7B is placed. By moving the tool 10, the attachment / detachment operation of the inner beam 5B can be easily performed.
The space between the steel frame 7 and the foundation slab 4 is called a set space 11 (see FIG. 1).

【0014】前記免震装置B2の取替手順の一例につい
て説明する。但し、ここに説明するのは、一つの免震装
置B2についての取替工程であり、複数の免震装置B2
を対象とした取替作業は、時間をずらして順次実施され
るものである。 [1] 予め、図4・5に示すように、前記搬入出口H
と、取替対象の免震装置B2が設置されている部分間に
位置する第二分割形鋼7Bを取り外して、前記移動路9
を確保しておく。 [2] 前記搬入出口Hから、交換用の新しい免震装置
B2を免震ピットB1内に搬入し、前記移動路9を通し
て取替対象部へ移動すると共に、取替対象部において
は、建物本体B3をジャッキJによって仮受けすると共
に、古い免震装置B2を取り外し、前記移動路9を通し
て基礎スラブ上を搬入出口H側へ移動する。 [3] 新しい免震装置B2を、取替対象部へセットし
て取り付けると共に、古い免震装置B2は、前記搬入出
口Hから搬出する。 [4] 前記第二分割形鋼7Bを元通り取り付ける。
An example of a procedure for replacing the seismic isolation device B2 will be described. However, what is described here is a replacement process for one seismic isolation device B2, and a plurality of seismic isolation devices B2 are used.
Are carried out sequentially at different times. [1] As shown in FIGS.
And the second split section steel 7B located between the portions where the seismic isolation device B2 to be replaced is installed is removed, and the moving path 9 is removed.
To secure. [2] A new seismic isolation device B2 for replacement is loaded into the seismic isolation pit B1 from the loading / unloading port H, and is moved to the replacement target portion through the moving path 9; B3 is temporarily received by the jack J, the old seismic isolation device B2 is removed, and the base is moved to the loading / unloading H side on the foundation slab through the moving path 9. [3] The new seismic isolation device B2 is set and attached to the part to be replaced, and the old seismic isolation device B2 is carried out from the entrance H. [4] The second split section steel 7B is attached again.

【0015】本実施形態の免震建物によれば、軽量化さ
れた第二分割形鋼7Bを取り外すだけで免震ピットB1
内に前記移動路9を簡単に形成することができ、前記免
震装置B2の取替作業を、短時間に効率的に実施するこ
とが可能となる。
According to the seismic isolation building of this embodiment, the seismic isolation pit B1 can be obtained simply by removing the light-weighted second divided steel section 7B.
The moving path 9 can be easily formed therein, and the work of replacing the seismic isolation device B2 can be efficiently performed in a short time.

【0016】〔別実施形態〕以下に他の実施の形態を説
明する。
[Another Embodiment] Another embodiment will be described below.

【0017】〈1〉 当該免震建物は、先の実施形態で
説明した鉄筋コンクリート造を主構造とすると共に、分
離部分Sを鉄骨造で構成してあるものに限るものではな
く、例えば、全体を鉄筋コンクリート造で構成したり、
全体を鉄骨造や鉄骨鉄筋コンクリート造で構成したり、
又は、それらの組み合わせによる構造であってもよい。 〈2〉 前記基礎梁5は、先の実施形態で説明したよう
に中梁5Bにのみ分離部分Sを備えたものに限るもので
はなく、前記搬入出口Hとの位置関係により、例えば、
外梁5Aに分離部分Sを設けることもある。 〈3〉 前記分離部分Sは、先の実施形態で説明したよ
うに、基礎梁5の中央部分に設けた取外梁部7Bに限ら
ず、例えば、図6・図9に示すように、基礎梁5の一端
部に、着脱自在な取外梁部7Bを設けて構成するもので
あってもよい。 〈4〉 前記取外梁部7Bは、基礎梁5を長手方向に分
割して構成するものに限らず、例えば、図7・図8に示
すように、基礎梁5を径方向に分割して形成する構成を
採用することも可能である。図7の場合、基礎梁5の上
半断面部を取外梁部7Bに構成してあり、基礎スラブ4
には、基礎梁5下半断面部の高さに合わせたスロープ部
12を設けてあることによって、分離部分Sが前記移動
路9となるように構成してある。また、図9の場合、基
礎梁5の下半断面部を取外梁部7Bに構成してあり、梁
背が高い場合には、免震装置B2が通過できる高さ分だ
け分離部分Sとするだけで、移動路9を確保することが
できるものである。これら二つの実施形態の免震建物に
よれば、取外梁部7Bを取り外して前記移動路9を確保
している最中でも、基礎梁5そのものは、長手方向につ
ながった状態であり、外力を負担できるから、より安全
に免震装置の交換作業を実施することが可能となる。 〈5〉 前記分離部分Sは、先の実施形態で説明したよ
うに、取り外すように構成した取外梁部7Bを必ず設け
た構成に限るものではなく、例えば、図9・図10に示
すように、基礎梁5を基礎1に対して水平揺動自在に取
り付け、基礎梁5の端部、又は、中間部に分離部分Sに
相当する連結部13を設ける構成であってもよい。これ
らの実施形態の場合、先の実施例のように取外梁部7B
を移動するための取り外し具10を設けることなく、分
離部分Sを再現することが可能となる。 〈6〉 前記免震装置は、先の実施形態で説明した鉛プ
ラグ入り積層ゴムからなるものに限らず、例えば、高減
衰ゴム(ゴム自体を特殊配合して粘りをもたせることで
ダンパー効果を期待できるようにしたもの)や、天然ゴ
ム系積層ゴム(オイルダンパーや、金属製ダンパー等を
別装置として設置することが必要)等で構成してあって
もよい。
<1> The seismic isolation building is not limited to the main structure of the reinforced concrete structure described in the above embodiment, and is not limited to the structure in which the separation portion S is made of a steel frame. Composed of reinforced concrete,
The whole is made of steel frame or steel frame reinforced concrete,
Alternatively, the structure may be a combination thereof. <2> The foundation beam 5 is not limited to the one having the separation portion S only in the center beam 5B as described in the previous embodiment.
In some cases, a separation portion S is provided on the outer beam 5A. <3> The separation portion S is not limited to the removal beam portion 7B provided at the central portion of the foundation beam 5 as described in the previous embodiment. For example, as shown in FIGS. At one end of the beam 5, a detachable detachable beam portion 7B may be provided. <4> The removal beam portion 7B is not limited to a configuration in which the foundation beam 5 is divided in the longitudinal direction. For example, as shown in FIGS. 7 and 8, the foundation beam 5 is divided in the radial direction. It is also possible to adopt a configuration of forming. In the case of FIG. 7, the upper half section of the foundation beam 5 is formed in the outer beam portion 7B, and the foundation slab 4
Is provided with a slope portion 12 corresponding to the height of the lower half section of the foundation beam 5 so that the separation portion S becomes the moving path 9. In the case of FIG. 9, the lower half section of the foundation beam 5 is formed as the outer beam portion 7B. When the beam is tall, the separation portion S is separated from the separation portion S by the height that the seismic isolation device B2 can pass. By simply doing so, the moving path 9 can be secured. According to the seismic isolation building of these two embodiments, the foundation beam 5 itself is connected in the longitudinal direction even while the removal beam 7B is removed and the moving path 9 is secured. Since the burden can be paid, it is possible to more safely perform the replacement work of the seismic isolation device. <5> As described in the previous embodiment, the separation portion S is not limited to the configuration in which the detachable beam portion 7B configured to be removed is always provided. For example, as shown in FIGS. Alternatively, the base beam 5 may be attached to the base 1 so as to be able to swing freely, and a connecting portion 13 corresponding to the separation portion S may be provided at an end portion or an intermediate portion of the base beam 5. In the case of these embodiments, the removal beam 7B as in the previous example is used.
It is possible to reproduce the separation portion S without providing the detaching tool 10 for moving the separation portion S. <6> The seismic isolation device is not limited to the one made of the laminated rubber with the lead plug described in the above embodiment. And a natural rubber-based laminated rubber (an oil damper, a metal damper, or the like needs to be installed as a separate device) or the like.

【図面の簡単な説明】[Brief description of the drawings]

【図1】免震建物の要部を示す側面視断面図FIG. 1 is a side sectional view showing a main part of a seismic isolation building.

【図2】免震装置を示す一部切欠き斜視図FIG. 2 is a partially cutaway perspective view showing the seismic isolation device.

【図3】免震ピットを示す平面図FIG. 3 is a plan view showing a seismic isolation pit.

【図4】免震ピットを示す平面図FIG. 4 is a plan view showing a seismic isolation pit.

【図5】免震ピットを示す側面視断面図FIG. 5 is a side sectional view showing the seismic isolation pit.

【図6】別実施形態の基礎梁を示す平面図FIG. 6 is a plan view showing a foundation beam of another embodiment.

【図7】別実施形態の基礎梁を示す断面図FIG. 7 is a sectional view showing a foundation beam of another embodiment.

【図8】別実施形態の基礎梁を示す断面図FIG. 8 is a sectional view showing a foundation beam according to another embodiment.

【図9】別実施形態の基礎梁を示す平面図FIG. 9 is a plan view showing a foundation beam of another embodiment.

【図10】別実施形態の基礎梁を示す平面図FIG. 10 is a plan view showing a foundation beam of another embodiment.

【図11】従来例の基礎梁を示す断面図FIG. 11 is a cross-sectional view showing a conventional foundation beam.

【符号の説明】[Explanation of symbols]

1 基礎 4 基礎スラブ 5 基礎梁 7B 取外梁部 9 移動路 10 取り外し具 11 セット空間 B1 免震ピット B2 免震装置 B3 建物本体 S 分離部分 DESCRIPTION OF SYMBOLS 1 Foundation 4 Foundation slab 5 Foundation beam 7B Removal beam part 9 Moving path 10 Removal tool 11 Set space B1 Seismic isolation pit B2 Seismic isolation device B3 Building body S Separation part

───────────────────────────────────────────────────── フロントページの続き (72)発明者 中原 洸二 大阪府大阪市中央区本町四丁目1番13号 株式会社竹中工務店大阪本店内 Fターム(参考) 2D046 DA13  ────────────────────────────────────────────────── ─── Continued on the front page (72) Koji Nakahara Inventor 4-1-1, Honmachi, Chuo-ku, Osaka-shi, Osaka F-term in Takenaka Corporation Osaka Main Store 2D046 DA13

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 基礎上に免震装置を設置して形成した免
震ピットと、前記免震装置によって支持される建物本体
とを設け、前記免震ピットの基礎梁を、逆梁で構成して
ある免震建物であって、 前記基礎梁は、その少なくとも一部を分離自在に形成し
てあると共に、基礎梁の分離部分に、前記免震装置の横
移動可能な移動路を確保自在に形成してある免震建物。
A seismic isolation pit formed by installing a seismic isolation device on a foundation and a building body supported by the seismic isolation device are provided, and a foundation beam of the seismic isolation pit is formed by a reverse beam. A seismic isolation building, wherein at least a part of the foundation beam is formed so as to be separable, and a laterally movable movement path of the seismic isolation device is freely secured at a separation part of the foundation beam. A seismic isolation building that has been formed.
【請求項2】 前記基礎梁の内、少なくとも前記分離部
分が属する部分は、鉄骨製である請求項1に記載の免震
建物。
2. The base-isolated building according to claim 1, wherein at least a portion of the foundation beam to which the separation portion belongs is made of steel frame.
【請求項3】 前記分離部分は、基礎梁の長手方向の中
央部に設定してある請求項1〜2の何れか一項に記載の
免震建物。
3. The seismic isolation building according to claim 1, wherein the separation portion is set at a central portion in a longitudinal direction of the foundation beam.
【請求項4】 前記分離部分で基礎梁から取り外される
取外梁部は、前記取外梁部を載置して移動する取り外し
具をセット自在なセット空間を、基礎スラブとの間に確
保した状態に取り付けてある請求項1〜3の何れか一項
に記載の免震建物。
4. A detachable beam portion to be detached from a foundation beam at the separation portion has secured a set space between the foundation slab and a setting space in which a removal tool for mounting and moving the detachable beam portion can be set. The seismic isolation building according to any one of claims 1 to 3, which is attached in a state.
JP10624099A 1999-04-14 1999-04-14 Seismic isolation building Expired - Lifetime JP3781916B2 (en)

Priority Applications (1)

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JP10624099A JP3781916B2 (en) 1999-04-14 1999-04-14 Seismic isolation building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10624099A JP3781916B2 (en) 1999-04-14 1999-04-14 Seismic isolation building

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Publication Number Publication Date
JP2000297559A true JP2000297559A (en) 2000-10-24
JP3781916B2 JP3781916B2 (en) 2006-06-07

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
JP2006233630A (en) * 2005-02-25 2006-09-07 Okumura Corp Pile foundation structure of building
JP2006307589A (en) * 2005-05-02 2006-11-09 Taisei Corp Foundation structure of base isolation building
JP2007120232A (en) * 2005-10-31 2007-05-17 Shimizu Corp Base isolation structure of pile head
JP2012180699A (en) * 2011-03-02 2012-09-20 Shimizu Corp Base-isolated structure
JP2012241398A (en) * 2011-05-18 2012-12-10 Sumitomo Fudosan Kk Intermediate base isolation structure utilizing flat inverse beam
JP2014020027A (en) * 2012-07-13 2014-02-03 Kumagai Gumi Co Ltd Pile foundation structure
JP2017057600A (en) * 2015-09-15 2017-03-23 株式会社安藤・間 Extended pile head isolation structure
JP2019163607A (en) * 2018-03-19 2019-09-26 株式会社免制震ディバイス Structure foundation

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233630A (en) * 2005-02-25 2006-09-07 Okumura Corp Pile foundation structure of building
JP4657759B2 (en) * 2005-02-25 2011-03-23 株式会社奥村組 Building pile foundation structure
JP2006307589A (en) * 2005-05-02 2006-11-09 Taisei Corp Foundation structure of base isolation building
JP4590300B2 (en) * 2005-05-02 2010-12-01 大成建設株式会社 Base structure of base-isolated building
JP2007120232A (en) * 2005-10-31 2007-05-17 Shimizu Corp Base isolation structure of pile head
JP4743412B2 (en) * 2005-10-31 2011-08-10 清水建設株式会社 Pile head seismic isolation structure
JP2012180699A (en) * 2011-03-02 2012-09-20 Shimizu Corp Base-isolated structure
JP2012241398A (en) * 2011-05-18 2012-12-10 Sumitomo Fudosan Kk Intermediate base isolation structure utilizing flat inverse beam
JP2014020027A (en) * 2012-07-13 2014-02-03 Kumagai Gumi Co Ltd Pile foundation structure
JP2017057600A (en) * 2015-09-15 2017-03-23 株式会社安藤・間 Extended pile head isolation structure
JP2019163607A (en) * 2018-03-19 2019-09-26 株式会社免制震ディバイス Structure foundation
JP7061904B2 (en) 2018-03-19 2022-05-02 株式会社免制震ディバイス Structure foundation

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