JP2003064882A - Method for installing base isolation device in existing building - Google Patents
Method for installing base isolation device in existing buildingInfo
- Publication number
- JP2003064882A JP2003064882A JP2001305822A JP2001305822A JP2003064882A JP 2003064882 A JP2003064882 A JP 2003064882A JP 2001305822 A JP2001305822 A JP 2001305822A JP 2001305822 A JP2001305822 A JP 2001305822A JP 2003064882 A JP2003064882 A JP 2003064882A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- isolation device
- seismic isolation
- opening
- plate
- 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.)
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、既築の建造物へ
の免震装置の設置方法、特に、既設の建造物の既設の鉄
筋コンクリート造（この「鉄筋コンクリート造」をこの
明細書では「ＲＣ」という）杭が大径である場合におけ
る免震装置の方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing a seismic isolation device in an existing building, and more particularly to an existing reinforced concrete structure (this "reinforced concrete structure" is referred to as "RC" in this specification). That is, the method of seismic isolation device when the pile has a large diameter.
【０００２】[0002]
【従来の技術】既設の建造物に形成された免震装置設置
用の隙間に免震装置の配置する従来の方法には、例え
ば、次の（１）〜（３）のようなものがある。
（１）既設建造物の躯体下部の直下の地盤を根切して地
下空間を形成し、土中に埋設されている支持杭の杭頭部
のみを露出させ、杭頭部の下部外周に耐圧盤を一体に形
成し、耐圧盤の上面と躯体下部との間にジャッキを設置
し、支持杭が負担している既設建造物の垂直荷重をジャ
ッキが受け持つ得るようにし、耐圧盤の上面から躯体下
部まで延在している柱頭部の先端部を解体除去して免震
装置設置用の隙間を形成し、該隙間に免震装置を設置し
て、ジャッキによる既存建物の支持を解除して、既設建
造物の垂直荷重を免震装置を介して支持杭に導入する免
震装置の設置方法（特開平９−１７０３３８号公報参
照）。
（２）既設の建造物の柱の外周部を所定範囲だけ取り除
き、柱の中心部を残存させて段設部を形成し、該段設部
の下部位置に下部台座を固設し、複数個に分割された積
層ゴム式免震装置を下部台座の上に設置して、前記段設
部に残存する柱の中心部を免震装置で囲繞し、この免震
装置の上に上部台座を固設して前記段設部の上部位置に
接続し、更に、前記段設部の柱の中心部を取り除く免震
装置の設置方法（特開平１０−１７６４２６号公報参
照）。
（３）既設の建造物の既設柱の外周部に鋼板巻きによる
柱補強を行ったのち、既設柱頭部の応力を鋼板に伝達
し、その伝達応力の既設柱脚部への伝達を可能にし、当
該既設柱における免震装置の取付箇所を切除して取除
き、この取除いた部分に免震装置を挿入して取付け、ジ
ャッキなどを使用せずに既設の建造物を免震化する既設
の建造物の免震工法（特開平７−２８６４４２号公報参
照）。2. Description of the Related Art Conventional methods of arranging a seismic isolation device in a gap for installing a seismic isolation device formed in an existing building include, for example, the following (1) to (3). . (1) Rooting the ground directly below the lower part of the existing building to form an underground space, exposing only the pile heads of the support piles buried in the soil, and withstanding pressure on the lower periphery of the pile heads. The board is integrally formed, and a jack is installed between the upper surface of the pressure board and the lower part of the body so that the jack can bear the vertical load of the existing structure that is supported by the support piles. Dismantling and removing the tip of the stilt head that extends to the bottom to form a gap for seismic isolation device installation, install the seismic isolation device in the gap, and release the support of the existing building by the jack, A method for installing a seismic isolation device that introduces a vertical load of an existing building into a support pile through the seismic isolation device (see Japanese Patent Laid-Open No. 9-170338). (2) The outer peripheral part of the existing building is removed by a predetermined range, the central part of the column is left to form a stepped part, and a lower pedestal is fixed at a lower position of the stepped part, and a plurality of parts are fixed. Install the laminated rubber type seismic isolation device divided on the lower pedestal, surround the center of the pillar remaining in the stepped portion with the seismic isolation device, and fix the upper pedestal on the seismic isolation device. A method for installing a seismic isolation device, which is installed and connected to an upper position of the stepped portion, and further removes the central portion of the pillar of the stepped portion (see Japanese Patent Laid-Open No. 10-176426). (3) After performing column reinforcement by winding a steel plate on the outer peripheral portion of the existing column of the existing building, the stress of the existing column head is transmitted to the steel plate, and the transmitted stress can be transmitted to the existing column base, The seismic isolation device is removed from the existing pillar by removing it, and the seismic isolation device is inserted and installed in the removed part to seismically isolate the existing building without using a jack. A seismic isolation method for buildings (see JP-A-7-286442).
【０００３】[0003]
【発明が解決しようとする課題】従来の前記（１）の免
震装置の設置方法によると、支持杭の直径が大きい場合
にはジャッキとジャッキの間の間隔が大きくなり、荷重
の支持点が杭の中心から遠く離れるから、躯体下部の基
礎梁等を補強する必要が生じたり、躯体下部に有害な変
形を生ぜしめる危険があったりして、多くの問題が生ず
る。従来の前記（２）の免震装置の設置方法では、残存
させた柱の中心部を使うことで、既設の建造物の垂直荷
重の支持が容易になる長所があっても、積層ゴム式免震
装置を複数個に分割する必要があり、積層ゴム式免震装
置の製作及び組み立てに多くの工数を要し、また、免震
装置の設置後における残存させた柱の中心部の取り除き
にも多くの工数を要する欠点がある。前記（３）の既設
の建造物の免震工法は、既設柱の免震装置の取付箇所を
切除して取除く前に、既設柱の外周部に鋼板巻きによる
柱補強を行なう必要があり、鋼板を巻きによる柱補強に
多くの工数を要する欠点がある。この発明の解決しよう
とする課題は、従来技術の上記のような欠点を有しない
既設の建造物への免震装置の設置方法を提供すること、
換言すると、免震補強工事の際の杭の施工部に作用する
荷重を仮支えするための費用を不要又は最少にすること
ができ、免震装置の杭の所定位置への設置が容易で、免
震装置を既設の杭に強固に固着できる既設の建造物への
免震装置の設置方法を提供することにある。According to the conventional method (1) for installing the seismic isolation device described above, when the diameter of the support pile is large, the distance between the jacks becomes large and the load supporting point becomes large. Since it is far away from the center of the pile, it is necessary to reinforce the foundation beams and the like at the lower part of the body, and there is a risk of causing harmful deformation to the lower part of the body, which causes many problems. In the conventional installation method of the seismic isolation device of the above (2), by using the center portion of the remaining column, it is easy to support the vertical load of the existing building, but the laminated rubber type isolation It is necessary to divide the seismic isolation device into multiple parts, which requires a lot of man-hours for manufacturing and assembling the laminated rubber type seismic isolation device, and also for removing the center portion of the pillar left after installation of the seismic isolation device. It has the drawback of requiring a lot of man-hours. In the seismic isolation method of the existing building of (3) above, it is necessary to reinforce the existing column with a steel plate around the outer peripheral portion of the existing column before cutting and removing the mounting location of the seismic isolation device. There is a drawback that many steps are required to reinforce the column by winding a steel plate. An object of the present invention is to provide a method of installing a seismic isolation device on an existing building that does not have the above-mentioned drawbacks of the conventional technology.
In other words, the cost for temporarily supporting the load acting on the construction part of the pile during the seismic isolation reinforcement work can be eliminated or minimized, and the seismic isolation device can be easily installed at the predetermined position of the pile, An object of the present invention is to provide a method of installing a seismic isolation device on an existing structure that can firmly attach the seismic isolation device to an existing pile.
【０００４】[0004]
【課題を解決するための手段】この発明の免震装置の設
置方法は、地中に設けられた多数のＲＣ造の大径の杭に
て地下の基礎体が支持され、地下の基礎体上に地上階又
は地下階及び地上階が複数階にわたって建造されている
既存の建造物への免震装置の設置方法において、前記基
礎体の下側の地盤を掘削して、基礎体の下側に空間を形
成し、該空間の下側にＲＣ造の耐圧盤を各杭と一体的に
新設して、新設の耐圧盤と基礎体との間に人が移動でき
る程度の高さの空間を形成し、前記空間に露出した杭に
その中心を水平な方向に貫通する免震装置設置用の開口
を形成して、杭の前記開口の左側及び右側に杭の前記開
口の上方の部分に作用する荷重を杭の前記開口の下方の
部分に伝達し得る連結部を切り残し、前記開口内に免震
装置を挿入し、免震装置の下側及び上側の取付板を杭の
前記開口の下側の下側部及びその上側の上側部に固着し
てから、杭の前記開口の左側及び右側の切り残した連結
部を適宜の手段で除去することを特徴とするものであ
る。According to the method of installing a seismic isolation device of the present invention, an underground foundation is supported by a large number of RC large-diameter piles provided in the ground, and an underground foundation is installed on the foundation. In the method of installing a seismic isolation device in an existing building in which the ground floor or the basement floor and the ground floor are constructed over a plurality of floors, the ground on the lower side of the foundation is excavated to the lower side of the foundation. A space is formed, and a RC pressure plate is newly installed integrally with each pile below the space, and a space is formed between the newly-installed pressure plate and the foundation so that a person can move. Then, an opening for seismic isolation device that penetrates the center of the pile exposed in the space in the horizontal direction is formed, and acts on the left side and the right side of the opening of the pile, above the opening of the pile. The seismic isolation device is inserted into the opening by leaving the connecting portion that can transmit the load to the lower part of the opening of the pile. After fixing the lower and upper mounting plates of the device to the lower lower side of the opening of the pile and the upper upper side thereof, the left and right uncut connecting portions of the opening of the pile are appropriately attached. It is characterized by being removed by means.
【０００５】地下の基礎体を支持する杭の直径が少々小
さい場合には、免震装置設置用の開口内に複数基の免震
装置を挿入し、各免震装置の下側及び上側の取付板を杭
の前記開口の下側部及び上側部に固着するようにする。
このようにすると、免震装置として小型（小径）のもの
を用いることになり、複数基の免震装置を挿入するため
の開口の幅を小さくすることができる。開口の幅を小さ
くすることにより、杭の前記開口の左側及び右側に切り
残す連結部を大きくすることができる。When the diameter of the pile supporting the underground foundation is a little small, a plurality of seismic isolation devices are inserted into the opening for the seismic isolation device installation, and the seismic isolation devices are mounted below and above the seismic isolation device. The plates are fixed to the lower and upper parts of the opening of the pile.
In this case, a small (small diameter) seismic isolation device is used, and the width of the opening for inserting a plurality of seismic isolation devices can be reduced. By reducing the width of the opening, it is possible to increase the size of the connecting portion left uncut on the left side and the right side of the opening of the pile.
【０００６】この発明の好ましい形態においては、基礎
体の下側の地盤を掘削して、基礎体の下側に空間を形成
し、該空間の下側にＲＣ造の耐圧盤を各杭と一体的に新
設して、新設の耐圧盤と基礎体との間に人が移動できる
程度の高さの空間を形成し、前記空間に露出した杭にそ
の中心を水平な方向に貫通する縦断面が略矩形の免震装
置設置用の開口を形成して、杭の前記開口の左側及び右
側に杭の前記開口の上方の部分に作用する荷重を杭の前
記開口の下方の部分に伝達し得る連結部を切り残し、杭
の前記開口の下側の下側部及びその上側の上側部に多数
のアンカー機能のある鋼材片が間隔をおいて突設され、
かつ免震装置の下側及び上側の取付板の下側及び上側に
多数のアンカー機能のある袋ナットが固着されている下
側プレート及び上側プレートを配し、各取付板のボルト
孔、各プレートのボルト孔にそれぞれボルトを差し込
み、各ボルトを各プレートに固着した袋ナットにねじ込
んで、免震装置の取付板にプレートを固着してなるプレ
ート付の免震装置が前記開口内の所定位置に配置された
状態にして、前記杭の下側部と下側プレートとの間の前
記袋ナット、鋼材片等の配設域の周囲に型枠を配置し、
かつ前記杭の上側部と上側プレートとの間の前記袋ナッ
ト、鋼材片等の配設域の周囲に型枠を配置し、各型枠内
にモルタル又はコンクリートを充填し、下側プレート及
び免震装置の下側の取付板を前記杭の下側部に固着し、
上側プレート及び免震装置の上側の取付板を前記杭の上
側部に固着してから、杭の前記開口の左側及び右側の切
り残した連結部を適宜の手段で除去するようにする。In a preferred embodiment of the present invention, the ground below the foundation is excavated to form a space below the foundation, and an RC pressure plate is integrated with each pile below the space. A new space is created between the newly installed pressure plate and the foundation to allow a person to move, and a vertical section that penetrates the center of the pile exposed in the space in the horizontal direction is formed. A connection in which a substantially rectangular opening for installing a seismic isolation device is formed and a load acting on a portion above the opening of the pile on the left side and the right side of the opening of the pile can be transmitted to a portion below the opening of the pile. With a portion left uncut, a large number of steel material pieces having an anchoring function are projected at intervals on the lower side of the lower side of the opening of the pile and the upper side of the upper side thereof,
Also, a lower plate and an upper plate to which a large number of cap nuts with an anchor function are fixed are arranged below and above the mounting plates on the lower and upper sides of the seismic isolation device, and the bolt holes of each mounting plate and each plate Insert the bolts into the bolt holes of each, and screw each bolt into the cap nut fixed to each plate, and fix the plate to the mounting plate of the seismic isolation device. In the arranged state, the form nut is arranged around the arrangement area of the cap nut, steel piece, etc. between the lower part of the pile and the lower plate,
Also, form is arranged around the area where the cap nuts, steel pieces, etc. are arranged between the upper part of the pile and the upper plate, and mortar or concrete is filled in each form, and the lower plate and the base plate are removed. Secure the lower mounting plate of the seismic device to the lower part of the pile,
After fixing the upper plate and the mounting plate on the upper side of the seismic isolation device to the upper portion of the pile, the uncut connecting portions on the left side and the right side of the opening of the pile are removed by appropriate means.
【０００７】また、この発明の好ましい形態において
は、下側及び上側プレートに固着した袋ナットや杭の免
震装置設置用の開口の下側部及び上側部に植設した鋼材
片の配設域の周囲等に補強鉄筋を配し、杭の下側部と下
側プレートとの間の袋ナット、鋼材片、補強鉄筋等の配
設域の周囲に型枠を配置し、かつ杭の上側部と上側プレ
ートとの間の前記袋ナット、鋼材片、補強鉄筋等の配設
域の周囲に型枠を配置し、各型枠内にモルタル又はコン
クリートを充填するようにする。Further, in a preferred embodiment of the present invention, the disposition region of the steel material pieces planted in the lower and upper portions of the opening for installing the seismic isolation device for the cap nuts and piles fixed to the lower and upper plates. Reinforcement bars are placed around the pile, the formwork is arranged around the area where the cap nuts, steel pieces, reinforcement bars, etc., between the lower part of the pile and the lower plate, and the upper part of the pile. The molds are arranged around the area where the cap nuts, steel pieces, reinforcing steel bars, etc. are provided between the mold and the upper plate, and each mold is filled with mortar or concrete.
【０００８】杭の太さ又は強さが充分でなく、杭を補強
しておく必要がある場合には、杭への免震装置設置用の
開口の形成に先行して、杭の前記開口を形成する部分の
左側及び右側の耐圧盤と基礎体との間の部分の外側に、
ＲＣ造の補強部を杭と一体に形成し、基礎体の下側の空
間に露出した杭に杭の中心を水平な方向に貫通する免震
装置設置用の開口を形成して、杭の前記開口の左側及び
右側に杭の前記開口の上方の部分に作用する荷重を杭の
前記開口の下方の部分に伝達し得る連結部を切り残し、
前記開口内に免震装置を挿入し、免震装置の下側及び上
側の取付板を杭の前記開口の下側の下側部及びその上側
の上側部に固着してから、杭の前記開口の左側及び右側
の切り残した前記補強部を含む連結部を適宜の手段で除
去するようにする。If the thickness or strength of the pile is not sufficient and it is necessary to reinforce the pile, prior to forming the opening for installing the seismic isolation device on the pile, the opening of the pile is opened. On the outside of the part between the pressure plate and the foundation on the left and right of the part to be formed,
The RC-reinforced portion is formed integrally with the pile, and an opening for installing a seismic isolation device that penetrates the center of the pile in the horizontal direction is formed in the pile exposed in the space below the foundation body, On the left side and the right side of the opening, leaving a connection part capable of transmitting the load acting on the upper part of the opening of the pile to the lower part of the opening of the pile,
After inserting the seismic isolation device into the opening, and fixing the lower and upper mounting plates of the seismic isolation device to the lower lower part of the opening of the pile and the upper upper part thereof, the opening of the pile The connecting portions including the reinforcing portions left uncut on the left side and the right side are removed by an appropriate means.
【０００９】この発明の好ましい形態においては、基礎
体の下側の空間に露出した杭の中間の所定の４か所に互
いに平行で水平な方向の貫通孔をドリルを使って穿設
し、各貫通孔の中心軸線を縦断面が矩形の免震装置設置
用の開口の角部に位置させるようにし、杭の左上の貫通
孔と左下の貫通孔の間及び右上の貫通孔と右下の貫通孔
の間の部分を、略鉛直な面になるように、ワイヤーソー
を使って鉛直に切断し、かつ杭の左下の貫通孔と右下の
貫通孔の間及び杭の左上の貫通孔と右上の貫通孔の間の
部分を、略水平な面になるように、ワイヤーソーを使っ
て水平に切断して、杭に縦断面が略矩形の免震装置設置
用の開口を形成する。In a preferred embodiment of the present invention, through holes are drilled in parallel with each other in horizontal directions at predetermined four positions in the middle of the pile exposed in the space below the base body, and The central axis of the through hole should be positioned at the corner of the opening for installing the seismic isolation device, which has a rectangular vertical section, and between the upper left through hole and the lower left through hole and between the upper right through hole and the lower right through hole. Cut the part between the holes vertically with a wire saw so that it becomes a substantially vertical surface, and between the lower left through hole and lower right through hole and between the upper left through hole and upper right hole of the pile. The part between the through holes is cut horizontally using a wire saw so as to form a substantially horizontal surface, and an opening for installing the seismic isolation device having a substantially rectangular vertical section is formed in the pile.
【００１０】免震装置設置用の開口の下側部又は上側部
に植設するアンカー機能のある鋼材片としては、頭付き
鉄筋、頭付きスタッド、所定さ長さ（高さ）の鉄筋（異
形棒鋼）を用いる。下側及び上側プレートに固着する袋
ナットとしては、アンカー機能のある袋ナットを使う。
アンカー機能のある袋ナットとしては、先に短い頭付き
鉄筋を固着した袋ナット、外周面に凹凸部を設けた袋ナ
ット等を用いる。下側プレート又は上側プレートとし
て、その直径が杭に形成される免震装置設置用の開口の
下側部又は上側部の幅と略同じか又は前記下側部又は上
側部の幅よりも小さいプレートを使う。Steel pieces having an anchor function to be planted in the lower side or the upper side of the opening for installing the seismic isolation device include a headed rebar, a headed stud, and a rebar having a predetermined length (height) (deformed shape). Steel bar) is used. Use a cap nut with an anchor function as the cap nut fixed to the lower and upper plates.
As the cap nut having the anchor function, a cap nut to which a short headed reinforcing bar is fixed, a cap nut having an uneven portion on the outer peripheral surface, or the like is used. As the lower plate or the upper plate, a plate whose diameter is substantially the same as the width of the lower part or the upper part of the opening for installing the seismic isolation device formed in the pile, or smaller than the width of the lower part or the upper part. use.
【００１１】[0011]
【実施例】実施例は、図１〜図１５に示され、既存の建
造物のＲＣ造の杭に免震装置を設置する場合に本発明の
設置方法を適用した例である。既設の建造物３は、例え
ば、図１５に示すように、地下が１階で地上が１１階に
建築され、その建造物３の地下躯体の基礎体２は、ＲＣ
造の基礎梁等にて構成されて、多数のＲＣ造の大径の杭
１にて地中に支持されている。各杭１の上端部と基礎体
２とは一体的に結合され、杭１の天端に対応する基礎体
２の部分に建造物３の地下階の柱３ａが建てられ、その
下端部が基礎体２に結合されている。図１及び図１４に
示すように、基礎体２の周囲に山止壁７を形成して、基
礎体２の下側の地盤を掘削し、各杭１の周囲を人が歩行
できる程度の高さの空間４を基礎体２の下側に形成し、
その空間４の下側にＲＣ造の耐圧盤５を新設する。耐圧
盤５を設ける杭１の周囲部には間隔をおいて多数の頭付
き鉄筋１Ｓｄ１（アンカー機能のある鋼材片）を植設し
ておいて、杭１と耐圧盤５とを一体化する。EXAMPLE An example is shown in FIGS. 1 to 15 and is an example in which the installation method of the present invention is applied to the case where the seismic isolation device is installed on an RC building pile of an existing building. The existing building 3 is, for example, as shown in FIG. 15, constructed underground on the first floor and on the ground on the 11th floor, and the foundation body 2 of the underground skeleton of the building 3 is RC
It is composed of structural foundation beams and is supported in the ground by a large number of RC large-diameter piles 1. The upper end of each pile 1 and the foundation body 2 are integrally connected, and the pillar 3a of the basement floor of the building 3 is erected on the portion of the foundation body 2 corresponding to the top end of the pile 1 and the lower end portion thereof is the foundation. It is attached to body 2. As shown in FIG. 1 and FIG. 14, a mountain stop wall 7 is formed around the foundation body 2 to excavate the ground below the foundation body 2, and a height high enough for a person to walk around each pile 1. The space 4 is formed on the lower side of the base body 2,
A RC pressure plate 5 is newly installed below the space 4. A large number of headed reinforcing bars 1Sd 1 (steel material pieces having an anchor function) are planted at intervals around the pile 1 where the pressure board 5 is provided, and the pile 1 and the pressure board 5 are integrated. .
【００１２】先ず、前記空間に露出した杭１の中間の所
定の位置に４個の互いに平行で水平方向の貫通孔１ａ１
〜１ａ４をドリルを使って穿設する。各貫通孔１ａ１〜
１ａ４の中心軸線を縦断面が略矩形の免震装置設置用の
開口Ａの角部に位置させるようにして、各貫通孔１ａ１
〜１ａ４をワイヤーソーの案内孔として使用できるよう
に構成する。それから、杭１の貫通孔１ａ１と貫通孔１
ａ２の間及び貫通孔１ａ３と貫通孔１ａ４の間の部分
を、略鉛直な面になるように、ワイヤーソーを使って鉛
直に切断する。また、杭１の貫通孔１ａ２と貫通孔１ａ
４の間及び貫通孔１ａ１と貫通孔１ａ３の間の部分を、
略水平な面になるように、ワイヤーソーを使って水平に
切断する。そして、四つの切断面からなる短い角柱状体
を取り出すと、杭１の中間に縦断面が略矩形の免震装置
設置用の開口Ａが形成される。前記開口Ａの下側の下側
部１Ａの上面１Ａ１は略水平な面になり、その開口Ａの
上側の上側部１Ｂの下面１Ｂ１も略水平な面になる。First, four through holes 1a 1 which are parallel to each other and horizontally extend at a predetermined position in the middle of the pile 1 exposed in the space.
Drill 1a 4 with a drill. Each through hole 1a 1 ~
The central axis of 1a 4 is positioned at the corner of the opening A for installing the seismic isolation device having a substantially rectangular vertical section, and each through hole 1a 1
1a 4 is configured so that it can be used as a guide hole of a wire saw. Then, the through-hole 1a 1 and the through hole 1 of the pile 1
The portion between between a 2 and the through hole 1a 3 and the through hole 1a 4, so as to be substantially vertical plane, cutting vertically using a wire saw. Also, the through hole 1a 2 and the through hole 1a of the pile 1
4 and between the through holes 1a 1 and 1a 3 ,
Use a wire saw to cut horizontally so that the surface is almost horizontal. Then, when a short prismatic body having four cut surfaces is taken out, an opening A for installing the seismic isolation device having a substantially rectangular vertical section is formed in the middle of the pile 1. The upper surface 1A 1 of the lower portion 1A on the lower side of the opening A is a substantially horizontal surface, and the lower surface 1B 1 of the upper portion 1B on the upper side of the opening A is also a substantially horizontal surface.
【００１３】杭１の免震装置設置用の開口Ａの下側部１
Ａに、頭付き鉄筋１Ｓｄ２の基部を挿入する孔１ｈを、
下側部１Ａの上面１Ａ１に対して略直角に間隔をおいて
多数箇穿設する。各孔１ｈに頭付き鉄筋１Ｓｄ２の基部
を挿入し、鉄筋１Ｓｄ２の基部の外周面と孔１ｈの内周
面との間に接着剤、結合材等を充填して、多数の頭付き
鉄筋１Ｓｄ２を植設する。同様に、杭１中の免震装置設
置用の開口Ａの上側部１Ｂに、頭付き鉄筋１Ｓｄ３の基
部を挿入する孔１ｈを、下側部１Ｂの下面１Ｂ１に対し
て略直角に間隔をおいて多数箇穿設し、各孔１ｈに頭付
き鉄筋１Ｓｄ３の基部を挿入し、鉄筋１Ｓｄ３の基部の
外周面と孔１ｈの内周面との間に接着剤、結合材等を充
填して、多数の頭付き鉄筋１Ｓｄ３を植設する。そし
て、図３に示す状態にする。なお、頭付き鉄筋１Ｓ
ｄ２，１Ｓｄ３（アンカー機能のある鋼材片）の植設
（突設）は、開口Ａへの免震装置１０の挿入前でも挿入
後でもよい。Lower part 1 of the opening A for installing the seismic isolation device for the pile 1
In A, a hole 1h into which the base of the headed reinforcing bar 1Sd 2 is inserted,
A large number of holes are provided at substantially right angles to the upper surface 1A 1 of the lower side portion 1A. A large number of headed rebars are inserted by inserting the base of the headed rebar 1Sd 2 into each hole 1h and filling an adhesive, a bonding material, etc. between the outer peripheral surface of the base of the rebar 1Sd 2 and the inner peripheral surface of the hole 1h. Implant 1Sd 2 . Similarly, in the upper part 1B of the opening A for installing the seismic isolation device in the pile 1, a hole 1h for inserting the base part of the headed reinforcing bar 1Sd 3 is formed at a substantially right angle to the lower surface 1B 1 of the lower part 1B. large number箇穿set at a, to insert the base of the headed rebar 1SD 3 in each hole 1h, the adhesive between the outer surface and the inner peripheral surface of the hole 1h of the base rebar 1SD 3, a binder, etc. After filling, a large number of headed reinforcing bars 1Sd 3 are planted. Then, the state shown in FIG. 3 is obtained. In addition, rebar 1S with head
The implantation (projection) of d 2 , 1Sd 3 (steel material piece having an anchor function) may be performed before or after the seismic isolation device 10 is inserted into the opening A.
【００１４】免震装置１０は、図４に示すように、成の
低い円柱形の積層ゴム１１とその下側及び上側に結合し
た積層ゴム１１の直径と同径若しくはその直径よりも大
きい直径の円形の下側及び上側の取付板１２，１３とで
構成されている。各取付板１２，１３の積層ゴム１１か
ら鍔状に突出した周囲部の積層ゴム１１の軸心を中心と
する円上に間隔をおいて多数のボルト孔１２ａ，１３ａ
が穿設されている。免震装置１０の下側及び上側の取付
板１２，１３を下側及び上側の杭部分１Ａ，１Ｂに取付
けるのに使う鋼板製の円形の下側プレート１４及び上側
プレート１５の周囲部には、その下側又は上側の前記取
付板１２，１３の各ボルト孔１２ａ，１３ａに対応する
位置に袋ナット１４ａ，１５ａが固着され、各袋ナット
１４ａ，１５ａの螺子孔に対応する下側プレート１４及
び上側プレート１５の各位置に各袋ナット１４ａ，１５
ａの螺子孔に通じるボルト孔が穿設されている。なお、
各袋ナット１４ａ，１５ａの先には、図４に示すよう
に、頭付き鉄棒１４ｃ，１５ｃが固着されている。As shown in FIG. 4, the seismic isolation device 10 has the same diameter as or a diameter larger than the diameter of the laminated rubber 11 having a low columnar shape and the laminated rubber 11 coupled to the lower side and the upper side thereof. It is composed of lower and upper circular mounting plates 12 and 13. A large number of bolt holes 12a, 13a are formed at intervals on a circle centered on the shaft center of the laminated rubber 11 around the peripheral portion protruding from the laminated rubber 11 of each of the mounting plates 12, 13.
Has been drilled. On the periphery of the circular lower plate 14 and upper plate 15 made of steel plate used for attaching the lower and upper mounting plates 12 and 13 of the seismic isolation device 10 to the lower and upper pile portions 1A and 1B, Cap nuts 14a and 15a are fixed at positions corresponding to the bolt holes 12a and 13a of the mounting plates 12 and 13 below or above the lower plate 14 corresponding to the screw holes of the cap nuts 14a and 15a, respectively. The cap nuts 14a and 15 are provided at the respective positions of the upper plate 15.
A bolt hole communicating with the screw hole of a is formed. In addition,
As shown in FIG. 4, headed iron bars 14c and 15c are fixed to the ends of the cap nuts 14a and 15a, respectively.
【００１５】杭１に形成した免震装置設置用の開口Ａへ
の免震装置１０の設置の仕方としては、例えば、次の
（ａ）〜（ｃ）のやり方がある。
（ａ）杭１の下側部１Ａ及び上側部１Ｂに多数の頭付き
鉄筋１Ｓｄ２，１Ｓｄ３を植設する。免震装置１０の下
側及び上側の取付板１２，１３の下側及び上側に下側プ
レート１４及び上側プレート１５を配し、取付板１２，
１３のボルト孔１２ａ，１３ａ、プレート１４，１５の
ボルト孔にそれぞれボルトｂを差し込み、各ボルトｂを
プレート１４，１５に固着した袋ナット１４ａ，１５ａ
にねじ込んで、免震装置１０の取付板１２，１３にプレ
ート１４，１５を固着してなるプレート１４，１５付の
免震装置１０を、杭１の下側部１Ａ及び上側部１Ｂに多
数の頭付き鉄筋１Ｓｄ２，１Ｓｄ３が植設された免震装
置設置用の開口Ａに挿入して、所定の位置に配置する。
（ｂ）頭付き鉄筋１Ｓｄ２の基部を挿入する孔１ｈを、
下側部１Ａの上面１Ａ１に対して略直角に間隔をおいて
多数箇穿設しておき、前記プレート１４，１５付の免震
装置１０の免震装置設置用の開口Ａへの挿入時に邪魔に
ならない頭付き鉄筋３Ｓｄ２，３Ｓｄ３のみを植設す
る。前記プレート１４，１５付の免震装置１０を、免震
装置設置用の開口Ａに挿入して、所定の位置に配置して
から、杭１の下側部１Ａ及び上側部１Ｂにその他の多数
の頭付き鉄筋１Ｓｄ２，１Ｓｄ３を植設する。
（ｃ）杭１の下側部１Ａ及び上側部１Ｂに多数の頭付き
鉄筋３Ｓｄ２，３Ｓｄ３を植設する。それから、袋ナッ
ト１４ａ，１５ａ付の下側及び上側のプレート１４，１
５を免震装置設置用の開口Ａ内に挿入し、プレート１
４，１５のいずれか一方を所定位置に設置してから、プ
レート１４，１５間にあけた隙間に免震装置１０を挿入
して、免震装置１０の下側及び上側の取付板１２，１３
のボルト孔１２ａ，１３ａ、プレート１４，１５のボル
ト孔にそれぞれボルトｂを差し込み、各ボルトｂをプレ
ート１４，１５に固着した袋ナット１４ａ，１５ａにね
じ込んで、免震装置１０の取付板１２，１３にプレート
１４，１５を固着して、免震装置１０を所定位置に配置
して移動しないようにする。As a method of installing the seismic isolation device 10 in the opening A for installing the seismic isolation device formed in the pile 1, for example, there are the following methods (a) to (c). (A) A large number of headed reinforcing bars 1Sd 2 and 1Sd 3 are planted in the lower portion 1A and the upper portion 1B of the pile 1. The lower plate 14 and the upper plate 15 are disposed below and above the seismic isolation device 10 below and above the mounting plates 12 and 13, respectively.
Cap nuts 14a and 15a in which bolts b are inserted into the bolt holes 12a and 13a of the plate 13 and the bolt holes of the plates 14 and 15 and the bolts b are fixed to the plates 14 and 15, respectively.
The seismic isolation device 10 with the plates 14 and 15 formed by fixing the plates 14 and 15 to the mounting plates 12 and 13 of the seismic isolation device 10 by screwing it into the lower part 1A and the upper part 1B of the pile 1 Insert the headed reinforcing bars 1Sd 2 and 1Sd 3 into the opening A for installing the seismic isolation device, and place it at a predetermined position. (B) A hole 1h into which the base of the headed reinforcing bar 1Sd 2 is inserted,
When the base isolation device 10 with the plates 14 and 15 is inserted into the opening A for installing the seismic isolation device, a large number of holes are provided at substantially right angles to the upper surface 1A 1 of the lower side portion 1A. Only the rebars with heads 3Sd 2 and 3Sd 3 that are out of the way are planted. After inserting the seismic isolation device 10 with the plates 14 and 15 into the opening A for installing the seismic isolation device and arranging the seismic isolation device 10 at a predetermined position, the seismic isolation device 10 is attached to the lower side portion 1A and the upper side portion 1B of the pile 1 and many others. Headed rebars 1Sd 2 and 1Sd 3 are planted. (C) A large number of headed reinforcing bars 3Sd 2 and 3Sd 3 are planted in the lower part 1A and the upper part 1B of the pile 1. Then, the lower and upper plates 14, 1 with cap nuts 14a, 15a
5 into the opening A for installing the seismic isolation device, and plate 1
After installing either one of 4, 4 or 15 at a predetermined position, the seismic isolation device 10 is inserted into the gap provided between the plates 14 and 15, and the lower and upper mounting plates 12 and 13 of the seismic isolation device 10 are inserted.
Of the seismic isolation device 10, by inserting the bolts b into the bolt holes 12a and 13a of the plate 14 and the bolt holes of the plates 14 and 15, and screwing the bolts b into the cap nuts 14a and 15a fixed to the plates 14 and 15, respectively. The plates 14 and 15 are fixed to the plate 13, and the seismic isolation device 10 is arranged at a predetermined position so as not to move.
【００１６】図５に示すように、免震装置１０の下側の
下側プレート１４の袋ナット１４ａの配設域及び杭１の
下側部１Ａの頭付き鉄筋１Ｓｄ２の配設域の周囲に２段
又は２段以上に亘って１重又は２重にループ状の補強鉄
筋１Ｌｐを配筋し、また、免震装置１０の上側の上側プ
レート１５の袋ナット１５ａの配設域及び杭１の上側部
１Ｂの頭付き鉄筋１Ｓｄ３の配設域の周囲に２段又は２
段以上に亘って１重又は２重にループ状の補強鉄筋１Ｌ
ｐを配筋する。図６に示すように、免震装置１０の下側
の袋ナット１４ａ、頭付き鉄筋１Ｓｄ２、補強鉄筋１Ｌ
ｐの配設域の周囲に円筒形の型枠１８を配置し、免震装
置１０の上側の袋ナット１５ａ、頭付き鉄筋１Ｓｄ３、
補強鉄筋１Ｌｐの配設域の周囲にも円筒形の型枠１８を
配置する。各型枠１７には圧入管１８ａと空気抜き管１
８ｂが設けられている。各型枠１８内に圧入管１８ａか
ら高流動性の膨張性モルタル又はコンクリートを圧入
し、圧入したモルタル又はコンクリートが硬化したら、
各型枠１８を脱型して、図７及び図８に示す状態にす
る。膨張性モルタル又はコンクリートの設計強度の発現
により、杭１と免震装置１０とが完全に一体化される。
建造物１を下部の全て杭１について、免震装置１０の設
置が完了した後に、各杭１の免震手段設置用の開口Ａの
左側の連結部（切り残し部）１Ｃ及び右側の連結部（切
り残し部）１Ｄを切断し又は破壊して除去して、図１０
に示す状態にする。連結部（切り残し部）１Ｃ，１Ｄ
は、例えば、切断面が杭１の下側部１Ａの上面１Ａ１及
び杭１の上側部１Ｂの下面１Ｂ１と面一になるように、
ワイヤーソーを使って水平に切断して除去する。各杭１
の連結部１Ｃ，１Ｄを切断除去すると、建造物１が免震
性を備えた建造物に生まれかわる。この既存の建造物に
免震性を付与する作業は、その建造物を普通に使いなが
ら行うことができる。As shown in FIG. 5, around the disposition area of the cap nut 14a of the lower plate 14 of the seismic isolation device 10 and the disposition area of the headed rebar 1Sd 2 of the lower part 1A of the pile 1. The reinforcing bars 1Lp in a loop shape are arranged in a single or double manner in two steps or in two or more steps, and the cap nut 15a disposition area of the upper plate 15 on the upper side of the seismic isolation device 10 and the pile 1 are also arranged. 2 steps or 2 around the area where the headed reinforcing bar 1Sd 3 of the upper part 1B of the
Reinforcing bar 1L in a loop shape in single or double over steps
Arrange p. As shown in FIG. 6, a cap nut 14a on the lower side of the seismic isolation device 10, a headed reinforcing bar 1Sd 2 , and a reinforcing reinforcing bar 1L.
A cylindrical form frame 18 is arranged around the p area, and the cap nut 15a on the upper side of the seismic isolation device 10, the headed rebar 1Sd 3 ,
A cylindrical form frame 18 is also arranged around the area where the reinforcing bar 1Lp is arranged. Each mold 17 has a press-fitting pipe 18a and an air vent pipe 1
8b is provided. A high-fluidity expansive mortar or concrete is press-fitted into each mold 18 from the press-fitting pipe 18a, and when the press-fitted mortar or concrete is hardened,
Each mold 18 is removed from the mold to be in the state shown in FIGS. 7 and 8. The pile 1 and the seismic isolation device 10 are completely integrated due to the design strength of the expansive mortar or concrete.
After the installation of the seismic isolation device 10 is completed for all the piles 1 in the lower part of the building 1, the connection portion (left uncut portion) 1C on the left side of the opening A for installing the seismic isolation means of each pile 1 and the connection portion on the right side (Uncut portion) 1D is cut or destroyed to remove,
Set to the state shown in. Connection part (uncut part) 1C, 1D
For example, as the cutting surface is the lower surface 1B 1 flush upper portion 1B of the upper surface 1A 1 and pile 1 of the lower portion 1A of the pile 1,
Use a wire saw to cut horizontally to remove. Each pile 1
When the connecting portions 1C and 1D of 1 are cut and removed, the building 1 is reborn as a building having seismic isolation. The work of imparting seismic isolation to this existing structure can be performed while using the structure normally.
【００１７】杭１の直径が少々小さい場合には、図９に
示すように、免震装置設置用の開口Ａ内に２基の少々小
径の免震装置１０Ａを隣接して設置するようにする。こ
のようにすると、２基の免震装置１０Ａを挿入するため
の開口Ａの幅を小さくすることができる。開口の幅を小
さくすることにより、杭の前記開口の左側及び右側に残
す連結部（切り残し部）１Ｃ，１Ｄを大きくすることが
できる。図９に示す例では開口Ａ内に２基の免震装置１
０Ａを設置したが、免震装置設置用の開口内に２基以上
の免震装置を設置する場合もある。免震装置１０Ａの設
置の仕方は前記の開口Ａに１基の免震装置１０を設置す
る場合と同様である。また、杭１の直径が充分に大きく
ない場合でも、図１１及び図１２に示すように、基礎体
２と耐圧盤５との間の杭１の部分を補強すれば、上述の
免震装置１０の設置方法は採用することができる。この
場合には、杭１への免震装置設置用の開口Ａの形成に先
行して、開口Ａとなる部分の左側及び右側の連結部（切
り残し部）１Ｃ，１Ｄの外側に、ＲＣ造の補強部１Ｅ，
１Ｆを、例えば、基礎体２と耐圧盤５との間に延在させ
て、杭１の両側の部分と一体に形成する。When the diameter of the pile 1 is slightly small, as shown in FIG. 9, two seismic isolation devices 10A of slightly smaller diameter are installed adjacent to each other in the opening A for installing the seismic isolation device. . By doing so, the width of the opening A for inserting the two seismic isolation devices 10A can be reduced. By reducing the width of the opening, it is possible to increase the connecting portions (uncut portions) 1C and 1D left on the left side and the right side of the opening of the pile. In the example shown in FIG. 9, two seismic isolation devices 1 are provided in the opening A.
Although 0A was installed, there are cases where two or more seismic isolation devices are installed in the opening for seismic isolation device installation. The method of installing the seismic isolation device 10A is the same as the case of installing one seismic isolation device 10 in the opening A. Even if the diameter of the pile 1 is not sufficiently large, if the portion of the pile 1 between the foundation body 2 and the pressure board 5 is reinforced as shown in FIGS. The installation method of can be adopted. In this case, prior to the formation of the opening A for installing the seismic isolation device in the pile 1, the RC structure is formed on the outside of the left and right connecting portions (uncut portions) 1C and 1D of the portion to be the opening A. Reinforcement part 1E,
1F is made to extend between the base body 2 and the pressure board 5, for example, and is integrally formed with the parts on both sides of the pile 1.
【００１８】各杭１の免震装置設置用の開口Ａの左側及
び右側の連結部（切り残し部）１Ｃ，１Ｄを切断し又は
破壊して除去しても、免震装置２０の免震能が発揮され
ないようにするには、図１３に示すように、免震装置１
０の下側の取付板１２の積層ゴム１１から鍔状に突出し
た周囲部の上側の４箇所に、鋼製のＬ形の短い規制片１
３Ａをそれぞれ配し、各規制片１３ＡのＬ形の一方の水
平部に穿ったボルト孔、下側の取付板１２のボルト孔及
び下側プレート１４のボルト孔に通したボルトｂを、下
側プレート１４の袋ナット１４ａの螺子孔にねじ込ん
で、各規制片１６Ａを取付板１２及び下側プレート１４
に固着し、免震装置１０の周囲部の上側の取付板１３の
積層ゴム２１から鍔状に突出した周囲部の下側の４箇所
に、前記規制片１６Ａと同じ規制片１６Ｂをそれぞれ配
し、各規制片１６ＢのＬ形の一方の水平部に穿ったボル
ト孔、上側の取付板１３のボルト孔及び上側プレート１
５のボルト孔に通したボルトｂを、上側プレート１５の
袋ナット１５ａの螺子孔にねじ込んで、各規制片１６Ｂ
を取付板１３及び上側プレート１５に固着し、取付板１
２及び下側プレート１４に固定した各規制片１６ＡのＬ
形の他方の鉛直部に穿ったボルト孔と取付板１３及び上
側プレート１５に固定した各規制片１６ＢのＬ形の他方
の鉛直部に穿ったボルト孔とにそれぞれボルトｂを通
し、それらのボルトｂにナットｎをねじ込んで、下側の
各規制片１６Ａと上側の各規制片１６Ｂとを着脱可能に
結合した状態にし、免震装置１０の積層ゴム１１が変形
できないように規制して、補強鉄筋１Ｌｐの配筋、型枠
１８の設置、モルタル又はコンクリートの圧入等の作業
を行うようにすると、それらの作業中に下側プレート、
免震装置及び上側プレートの所定の位置関係が乱れるこ
とがない。また、前記状態においては、各規制片１６
Ａ，１６Ｂにて免震装置１０の積層ゴム２１の変形が阻
止されているので、杭の連結部（切り残し部）１Ｃ，１
Ｄを除去しても、免震装置１０の免震能は発揮されな
い。ボルト・ナットｂ・ｎによる下側の各規制片１６Ａ
と上側の各規制片１６Ｂとの結合を解除したり、規制片
１６Ａ，１６Ｂを除去したりすると、免震装置１０の免
震能が発揮される。The seismic isolation capability of the seismic isolation device 20 is obtained even if the connecting portions (uncut portions) 1C and 1D on the left and right sides of the opening A for installing the seismic isolation device of each pile 1 are cut or destroyed. As shown in Fig. 13, the seismic isolation device 1
The L-shaped short restricting piece 1 made of steel is provided at four places on the upper side of the peripheral portion protruding like a brim from the laminated rubber 11 of the lower mounting plate 12 of 0.
3A are arranged respectively, and a bolt hole drilled in one horizontal part of the L-shape of each restriction piece 13A, a bolt b passed through a bolt hole of the lower mounting plate 12 and a bolt hole of the lower plate 14 is attached to the lower side. The restricting pieces 16A are screwed into the screw holes of the cap nut 14a of the plate 14 to attach the restricting pieces 16A to the mounting plate 12 and the lower plate 14.
The same restricting pieces 16B as the restricting pieces 16A are arranged at four places on the lower side of the peripheral portion of the seismic isolation device 10 that protrudes like a flange from the laminated rubber 21 of the upper mounting plate 13 of the seismic isolation device 10, respectively. , A bolt hole formed in one horizontal part of the L shape of each restriction piece 16B, a bolt hole of the upper mounting plate 13 and the upper plate 1
The bolt b passed through the bolt hole of No. 5 is screwed into the screw hole of the cap nut 15a of the upper plate 15, and each regulation piece 16B.
To the mounting plate 13 and the upper plate 15,
2 and L of each regulation piece 16A fixed to the lower plate 14
The bolt b is inserted into the other vertical hole of the shape and the bolt hole formed in the other vertical part of the L shape of each of the restriction pieces 16B fixed to the mounting plate 13 and the upper plate 15, and the bolt b is passed through these bolts. A nut n is screwed into b to make the lower regulation pieces 16A and the upper regulation pieces 16B detachably coupled to each other so that the laminated rubber 11 of the seismic isolation device 10 is prevented from being deformed and reinforced. When the work such as reinforcing bar of 1 Lp, installation of form 18, press-fitting of mortar or concrete is carried out, the lower plate,
The predetermined positional relationship between the seismic isolation device and the upper plate will not be disturbed. Further, in the above-mentioned state, each regulation piece 16
Since the laminated rubber 21 of the seismic isolation device 10 is prevented from being deformed at A and 16B, the connecting portions (uncut portion) 1C and 1 of the pile are left.
Even if D is removed, the seismic isolation capability of the seismic isolation device 10 is not exerted. Each lower control piece 16A with bolts and nuts b and n
The seismic isolation capability of the seismic isolation device 10 is exhibited when the coupling between the upper and the upper restriction pieces 16B is released or the restriction pieces 16A and 16B are removed.
【００１９】既存の建造物３の免震化工事を完了させる
前に、図１４に示すように、建造物３の地下躯体の周囲
にＲＣ造の擁壁６を建造し、擁壁６の下部と耐圧盤５の
周囲部とを一体的に結合する。また、擁壁６の上端部の
一部に建造物３側に鍔状に突出する突出部６ａを形成
し、該突出部６ａに対応する建造物３の周囲部に擁壁６
側に鍔状に突出する突出板部３ｂを形成し、突出部６ａ
の上側に小間隔をおいて突出板部３ｂが位置するように
する。上記のようにしておくと、既存の建造物３の免震
化工事の完了後の地震時に、建造物３とその周囲の敷地
にある擁壁６との間に相対的な変位が生じた場合にも、
突出板部３ａ上を通って、建造物３から外に出たり、外
から建造物３の中へ入ったりすることが危険なくでき
る。Before the seismic isolation work for the existing building 3 is completed, as shown in FIG. 14, an RC retaining wall 6 is built around the underground structure of the building 3, and the lower portion of the retaining wall 6 is constructed. And the peripheral part of the pressure board 5 are integrally connected. Further, a protrusion 6a protruding in a brim shape is formed on the side of the building 3 at a part of the upper end of the retaining wall 6, and the retaining wall 6 is provided on the periphery of the structure 3 corresponding to the protrusion 6a.
A protruding plate portion 3b protruding in a brim shape is formed on the side, and the protruding portion 6a
The protruding plate portion 3b is positioned at a small distance above the above. When the above is performed, when a relative displacement occurs between the building 3 and the retaining wall 6 on the site around the building 3 during an earthquake after the seismic isolation work of the existing building 3 is completed. Also,
It is possible to pass through the protruding plate portion 3a and get out of the building 3 or get into the building 3 from the outside without danger.
【００２０】[0020]
【発明の効果】この発明は、特許請求の範囲の各請求項
に記載した構成を備えることにより、次の（イ）〜
（ホ）の効果を奏する。
（イ）請求項１の免震装置の設置方法は、地中に設けら
れた多数のＲＣ造の大径の杭にて地下の基礎体が支持さ
れ、地下の基礎体上に地上階又は地下階及び地上階が複
数階にわたって建造されている既存の建造物への免震装
置の設置方法において、前記基礎体の下側の地盤を掘削
して、基礎体の下側に空間を形成し、該空間の下側にＲ
Ｃ造の耐圧盤を各杭と一体的に新設して、新設の耐圧盤
と基礎体との間に人が移動できる程度の高さの空間を形
成し、前記空間に露出した杭にその中心を水平な方向に
貫通する免震装置設置用の開口を形成して、杭の前記開
口の左側及び右側に杭の前記開口の上方の部分に作用す
る荷重を杭の前記開口の下方の部分に伝達し得る連結部
を切り残し、前記開口内に免震装置を挿入し、免震装置
の下側及び上側の取付板を杭の前記開口の下側の下側部
及びその上側の上側部に固着してから、杭の前記開口の
左側及び右側の切り残した連結部を適宜の手段で除去す
るため、次の（１）及び（２）の効果を奏する。
（１）基礎体の下側の空間に露出した杭にその中心を水
平な方向に貫通する免震装置設置用の開口を形成して、
杭の前記開口の左側及び右側に杭の前記開口の上方の部
分に作用する荷重を杭の前記開口の下方の部分に伝達し
得る連結部を切り残すから、免震補強工事の際の杭の施
工部に作用する荷重を仮支えするたの手段（例えば、支
柱、ジャッキ、架台等が）が全く不要になり、免震補強
工事費の中で大きな金額を占める前記仮支えするための
資材費及びそのための人件費が全く必要でなく、既設の
杭への免震装置の設置を最小の費用で行なうことができ
る。
（２）免震装置設置用の開口内に免震装置を挿入し、免
震装置の下側及び上側の取付板を杭の前記開口の下側の
下側部及びその上側の上側部に固着した後、杭の前記開
口の左側及び右側の切り残した連結部を適宜の手段で除
去するため、安全かつ容易に連結部（切り残し部）を除
去することができる。EFFECTS OF THE INVENTION The present invention has the following (a)-(a) by having the structure described in each claim of the claims.
The effect of (e) is produced. (A) The method for installing the seismic isolation device according to claim 1 is that the underground foundation body is supported by a large number of RC large-diameter piles provided in the ground, and the ground floor or the underground is placed on the underground foundation body. In a method of installing a seismic isolation device in an existing building where floors and ground floors are constructed over a plurality of floors, excavating the ground below the foundation body to form a space below the foundation body, R below the space
A C-type pressure plate is newly installed integrally with each pile to form a space between the newly-formed pressure plate and the foundation body, which is high enough for a person to move, and the center of the pile is exposed in the space. Forming an opening for seismic isolation device installation that penetrates horizontally in the direction of the load on the left and right sides of the opening of the pile on the upper part of the opening of the pile to the lower part of the opening of the pile. The seismic isolation device is inserted into the opening, leaving the connecting part that can be transmitted, and the lower and upper mounting plates of the seismic isolation device are attached to the lower lower part of the opening of the pile and the upper upper part thereof. After fixing, the left and right uncut connection parts on the left side of the opening of the pile are removed by an appropriate means, so that the following effects (1) and (2) are obtained. (1) Form an opening for installing a seismic isolation device that penetrates the center of the pile in the space below the foundation in a horizontal direction,
On the left and right sides of the opening of the pile, the connection parts that can transmit the load acting on the upper part of the opening of the pile to the lower part of the opening of the pile are left, so that the pile at the time of seismic isolation reinforcement work The means for temporarily supporting the load acting on the construction part (eg, columns, jacks, pedestals, etc.) is completely unnecessary, and the material cost for temporarily supporting the large amount of the seismic isolation reinforcement work. In addition, no labor cost is required for that, and the seismic isolation device can be installed on the existing pile at a minimum cost. (2) Insert the seismic isolation device into the opening for installing the seismic isolation device, and fix the lower and upper mounting plates of the seismic isolation device to the lower lower part of the opening of the pile and the upper upper part thereof. After that, the left and right uncut connection parts of the opening of the pile are removed by an appropriate means, so that the connection parts (uncut parts) can be safely and easily removed.
【００２１】（ロ）請求項２の免震装置の設置方法は、
上記（１）及び（２）の効果と同様の効果を奏し得るだ
けでなく、次の（３）の効果を奏する。
（３）杭の免震装置設置用の開口内に複数基の免震装置
を挿入し、各免震装置の下側及び上側の取付板を杭の前
記開口の下側の下側部及びその上側の上側部に固着する
ようにするから、免震装置として小型（小径）のものを
用いることができ、それらを挿入するための開口の幅を
小さくすることができ、開口の幅を小さくすることで、
杭の前記開口の左側及び右側に杭の開口の上方に作用す
る荷重を杭の前記開口の下方に伝達し得るようにするた
めに切り残す連結部を大きくすることができるから、比
較的小径の杭にも本発明により免震装置を設置すること
ができる。(B) The method for installing the seismic isolation device according to claim 2 is
Not only the same effects as the effects of (1) and (2) above can be obtained, but also the following effect (3) is obtained. (3) Insert a plurality of seismic isolation devices into the opening for installing the seismic isolation device of the pile, and attach the lower and upper mounting plates of each seismic isolation device to the lower part of the lower side of the opening of the pile and its Since it is fixed to the upper part on the upper side, a small (small diameter) device can be used as the seismic isolation device, the width of the opening for inserting them can be reduced, and the width of the opening can be reduced. By that,
Since the connection part left uncut in order to be able to transmit the load acting above the opening of the pile to the left side and the right side of the opening of the pile below the opening of the pile, the diameter of the relatively small diameter can be increased. According to the present invention, a seismic isolation device can be installed on a pile.
【００２２】（ハ）請求項３の免震装置の設置方法は、
上記（１）及び（２）の効果と同様の効果を奏し得るだ
けでなく、次の（４）の効果を奏する。
（４）杭の縦断面が略矩形の免震装置設置用の開口の下
側の下側部及びその上側の上側部に多数のアンカー機能
のある鋼材片が間隔をおいて突設され、かつ免震装置の
下側及び上側の取付板の下側及び上側に多数のアンカー
機能のある袋ナットが固着されている下側プレート及び
上側プレートを配し、各取付板のボルト孔、各プレート
のボルト孔にそれぞれボルトを差し込み、各ボルトを各
プレートに固着した袋ナットにねじ込んで、免震装置の
取付板にプレートを固着してなるプレート付の免震装置
が前記開口内の所定位置に配置された状態にして、杭の
前記下側部と下側プレートとの間の前記袋ナット、鋼材
片等の配設域の周囲に型枠を配置し、かつ杭の前記上側
部と上側プレートとの間の前記袋ナット、鋼材片等の配
設域の周囲に型枠を配置し、各型枠内にモルタル又はコ
ンクリートを充填し、下側プレート及び免震装置の下側
の取付板を前記杭の下側部に固着し、上側プレート及び
免震装置の上側の取付板を前記杭の上側部に固着するか
ら、免震装置を杭の前記下側部及び上側部に強固に固着
することができる。(C) The method for installing the seismic isolation device according to claim 3 is
Not only the same effects as the effects (1) and (2) above can be obtained, but also the following (4) effect is obtained. (4) A large number of steel material pieces having an anchoring function are provided at intervals on the lower side of the lower side and the upper side of the upper side of the opening for installing the seismic isolation device in which the vertical cross section of the pile is substantially rectangular, and A lower plate and an upper plate to which a number of cap nuts with an anchor function are fixed are arranged below and above the mounting plates below and above the seismic isolation device, and the bolt holes of each mounting plate and each plate Insert each bolt into the bolt hole, screw each bolt into the cap nut fixed to each plate, and fix the plate to the mounting plate of the seismic isolation device. Install the seismic isolation device with the plate at the specified position in the opening. In the state where the piles are formed, a form is arranged around the area where the cap nuts, steel pieces, and the like between the lower portion and the lower plate of the pile are arranged, and the upper portion of the pile and the upper plate. Around the area where the cap nuts, steel pieces, etc. are placed between Arrange them, fill each formwork with mortar or concrete, fix the lower plate and the lower mounting plate of the seismic isolation device to the lower part of the pile, and attach the upper plate and the upper mounting plate of the seismic isolation device. Is fixed to the upper part of the pile, the seismic isolation device can be firmly fixed to the lower and upper parts of the pile.
【００２３】（ニ）請求項４の免震装置の設置方法は、
上記（１）、（２）及び（４）の効果と同様の効果を奏
し得るだけでなく、次の（５）の効果を奏する。
（５）杭の免震装置設置用の開口の下側の下側部及びそ
の上側の上側部に多数のアンカー機能のある鋼材片が間
隔をおいて突設され、かつ免震装置の下側及び上側の取
付板の下側及び上側に多数のアンカー機能のある袋ナッ
トが固着されている下側プレート及び上側プレートを配
し、各取付板のボルト孔、各プレートのボルト孔にそれ
ぞれボルトを差し込み、各ボルトを各プレートに固着し
た袋ナットにねじ込んで、免震装置の取付板にプレート
を固着してなるプレート付の免震装置が前記開口内の所
定位置に配置された状態にして、前記袋ナットや鋼材片
の配設域の周囲等に補強鉄筋を配し、杭の前記下側部と
下側プレートとの間の前記袋ナット、鋼材片、補強鉄筋
等の配設域の周囲に型枠を配置し、かつ杭の前記上側部
と上側プレートとの間の前記袋ナット、鋼材片、補強鉄
筋等の配設域の周囲に型枠を配置し、各型枠内にモルタ
ル又はコンクリートを充填し、下側プレート及び免震装
置の下側の取付板を前記杭の下側部に固着し、上側プレ
ート及び免震装置の上側の取付板を前記杭の上側部に固
着するから、免震装置の下側及び上側の取付板を杭の前
記開口の下側部及び上側部に固着するモルタル層又はコ
ンクリート層を高強度のものにすることができ、免震装
置を杭に強固に固着することができる。(D) The method for installing the seismic isolation device according to claim 4 is
Not only the same effects as the effects (1), (2) and (4) above can be obtained, but also the following effect (5) is obtained. (5) A large number of steel material pieces having an anchor function are projected at intervals on the lower side of the lower side of the opening for installing the seismic isolation device of the pile and the upper side of the upper side thereof, and the lower side of the seismic isolation device. Place the lower and upper plates to which a number of cap nuts with an anchor function are fixed on the lower and upper sides of the upper and upper mounting plates, and attach bolts to the bolt holes of each mounting plate and the bolt holes of each plate. Inserting, screwing each bolt into the cap nut fixed to each plate, with the seismic isolation device with plate formed by fixing the plate to the mounting plate of the seismic isolation device is placed in a predetermined position in the opening, Reinforcing bars are arranged around the area where the cap nuts and steel pieces are arranged, and the area around the area where the cap nuts, steel pieces, reinforcing bars, etc. are located between the lower part of the pile and the lower plate. The formwork on the upper part of the pile and the upper plate Forming a form around the area where the cap nuts, steel pieces, reinforcing bars, etc. are arranged between, filling each form with mortar or concrete, and attaching the lower plate and the lower mounting plate of the seismic isolation device. Is fixed to the lower part of the pile, and the upper plate and the upper mounting plate of the seismic isolation device are fixed to the upper part of the pile. The mortar layer or the concrete layer adhered to the lower side portion and the upper side portion can have high strength, and the seismic isolation device can be firmly adhered to the pile.
【００２４】（ニ）請求項５の免震装置の設置方法は、
次の（６）及び（７）の効果を奏する。
（６）杭への免震手段設置用の開口の形成に先行して、
杭の開口を形成する部分の左側及び右側の耐圧盤と基礎
体との間の部分の外側に、ＲＣ造の補強部を杭と一体に
形成し、基礎体の下側の空間に露出した杭にその中心を
水平な方向に貫通する免震装置設置用の開口を形成し
て、杭の前記開口の左側及び右側に杭の前記開口の上方
に作用する荷重を杭の前記開口の下方に伝達し得る前記
補強部を含む連結部を切り残すから、太さ又は強度が充
分でない杭にも、免震装置設置用の開口を形成すること
ができ、免震補強工事の際の杭の施工部に作用する荷重
を仮支えするための手段の一部となるＲＣ造の補強部を
僅かな資材費及び人件費でつくることができる。
（７）杭に形成した免震装置設置用の開口内に免震装置
を挿入し、免震装置の下側及び上側の取付板を杭の前記
開口の下側部及び上側部に固着してから、杭の前記開口
の左側及び右側の前記補強部を含む連結部（切り残し
部）を適宜の手段で除去するから、補強部を含む連結部
を安全かつ容易に除去することができる。(D) The method for installing the seismic isolation device according to claim 5 is:
The following effects (6) and (7) are achieved. (6) Prior to the formation of the opening for installing the seismic isolation means on the pile,
An RC reinforcement part is formed integrally with the pile outside the part between the pressure plate on the left side and the right side of the part that forms the opening of the pile and the foundation body, and the pile is exposed in the space below the foundation body. An opening for installing a seismic isolation device is formed through the center of the pile in the horizontal direction, and the load acting above the opening of the pile is transmitted to the left and right sides of the opening of the pile below the opening of the pile. Since the connecting portion including the possible reinforcing portion is left uncut, an opening for installing a seismic isolation device can be formed even in a pile having insufficient thickness or strength, and the pile construction portion during seismic isolation reinforcement work It is possible to make the RC-made reinforcing portion, which is a part of the means for temporarily supporting the load acting on, with a small material cost and labor cost. (7) Insert the seismic isolation device into the opening for installing the seismic isolation device formed in the pile, and fix the lower and upper mounting plates of the seismic isolation device to the lower and upper parts of the opening of the pile. From this, since the connecting portions (the uncut portions) including the reinforcing portions on the left side and the right side of the opening of the pile are removed by an appropriate means, the connecting portions including the reinforcing portions can be safely and easily removed.
【００２５】（ニ）請求項６の免震装置の設置方法は、
上記（１）〜（７）の効果と同様の効果を奏し得るだけ
でなく、次の（８）の効果を奏する。
（８）基礎体の下側の空間に露出した杭の中間の所定の
４か所に互いに平行で水平な方向の貫通孔をドリルを使
って穿設し、各貫通孔の中心軸線を縦断面が略矩形の免
震装置設置用の開口の角部に位置させるようにし、杭の
左上の貫通孔と左下の貫通孔の間及び右上の貫通孔と右
下の貫通孔の間の部分を、略鉛直な面になるように、ワ
イヤーソーを使って鉛直に切断し、かつ杭の左下の貫通
孔と右下の貫通孔の間及び杭の左上の貫通孔と右上の貫
通孔の間の部分を、略水平な面になるように、ワイヤー
ソーを使って水平に切断して、杭に縦断面が略矩形の免
震装置設置用の開口を形成するから、その下側の下側部
の上面が略水平な面であり、その上側の上側部の下面が
略水平な面である縦断面が略矩形の免震装置設置用の開
口を容易に形成することができる。また、ＲＣ造の杭を
ワイヤーソーを使って切断することで、切断時の騒音及
び振動を低く抑えることができ、既存の建造物を普通に
使用しながら免震補強工事を行うことができる。(D) The method for installing the seismic isolation device according to claim 6 is:
Not only the same effects as the effects (1) to (7) described above can be obtained, but also the following effect (8) is obtained. (8) A through hole in a horizontal direction parallel to each other is formed at a predetermined four places in the middle of the pile exposed in the space below the foundation by using a drill, and the central axis of each through hole is longitudinally cross-sectioned. So that it is located at the corner of the opening for installation of a substantially rectangular seismic isolation device, and the portion between the upper left through hole and the lower left through hole and between the upper right through hole and the lower right through hole, Cut vertically using a wire saw so that it becomes a substantially vertical surface, and between the lower left through hole and lower right through hole of the pile and between the upper left through hole and upper right through hole of the pile Is cut horizontally using a wire saw so that it becomes a substantially horizontal surface, and an opening for installing a seismic isolation device with a substantially rectangular vertical cross section is formed in the pile. The upper surface is a substantially horizontal surface, and the lower surface of the upper part on the upper side is a substantially horizontal surface. It is possible. Also, by cutting the RC pile using a wire saw, noise and vibration at the time of cutting can be suppressed to a low level, and seismic isolation reinforcement work can be performed while using existing structures normally.
【図１】この発明の免震装置の設置方法の実施例の案内
用の貫通孔の穿設された杭等を示す建造物の下部の正面
図FIG. 1 is a front view of a lower portion of a building showing a pile or the like having a through hole for guiding provided in an embodiment of a method for installing a seismic isolation device according to the present invention.
【図２】図１に示す杭の貫通孔のある部分を図１のＡ−
Ａ線で断面した平面図FIG. 2 shows a portion of the pile shown in FIG.
Plan view taken along the line A
【図３】実施例の免震装置設置用の開口の下側部及び上
側部に頭付き鉄筋を植設した杭の正面図FIG. 3 is a front view of a pile in which headed reinforcing bars are planted on the lower side and the upper side of the opening for installing the seismic isolation device according to the embodiment.
【図４】実施例の免震装置設置用の開口に免震装置等を
挿入した杭の正面図FIG. 4 is a front view of a pile in which a seismic isolation device or the like is inserted into an opening for installing the seismic isolation device according to the embodiment.
【図５】実施例の免震装置設置用の開口内の袋ナット及
び頭付き鉄筋の配設域等の周囲への補強鉄筋の配筋状態
を示す正面図FIG. 5 is a front view showing a reinforcing bar reinforcement arrangement around a cap nut and a reinforcing bar with head in an opening for installing a seismic isolation device according to an embodiment.
【図６】実施例の免震装置設置用の開口内の袋ナット、
頭付き鉄筋、補強鉄筋の配設域の周囲に型枠を配置した
杭の正面図FIG. 6 is a cap nut in an opening for installing the seismic isolation device of the embodiment,
Front view of a pile with a formwork placed around the area where the headed reinforcing bars and reinforcing bars are arranged
【図７】実施例の免震装置設置用の開口の下側部及び上
側部に免震装置を固着した杭の正面図FIG. 7 is a front view of a pile in which the seismic isolation device is fixed to the lower and upper portions of the opening for installing the seismic isolation device according to the embodiment.
【図８】図７に示す杭の免震装置の設置部を図７のＢ−
Ｂ線で断面した平面図FIG. 8 shows the installation part of the seismic isolation device for the pile shown in FIG.
Plan view taken along the line B
【図９】実施例の杭の免震装置設置用の開口に２基の免
震装置を設置した場合の設置部を図７のＢ−Ｂ線と同様
の線にて断面した平面図FIG. 9 is a plan view of the installation portion when two seismic isolation devices are installed in the opening for seismic isolation device installation of the pile of the example, taken along a line similar to the line BB of FIG. 7.
【図１０】実施例の杭の免震装置設置用の開口に免震装
置を設置し、前記隙間の左側の支持部及び右側の支持部
を除去した状態の正面図FIG. 10 is a front view showing a state in which a seismic isolation device is installed in an opening for installing a seismic isolation device of a pile according to an embodiment, and a left supporting portion and a right supporting portion of the gap are removed.
【図１１】直径が少々小さい杭の基礎体と耐圧盤との間
の部分を補強する場合の杭の補強部等を示す正面図FIG. 11 is a front view showing a reinforcing portion of a pile when reinforcing a portion between a foundation body of a pile having a slightly smaller diameter and a pressure plate.
【図１２】図１１に示す杭を図１１のＣ−Ｃ線で断面し
た平面図FIG. 12 is a plan view of the pile shown in FIG. 11 taken along the line C-C in FIG. 11.
【図１３】実施例の下側プレート、免震装置の下側の取
付板、上側の取付板及び上側プレートを規制片を介して
連結した免震装置等を免震装置設置用の開口に挿入した
状態の杭の正面図FIG. 13: Insert the seismic isolation device in which the lower plate of the embodiment, the lower mounting plate of the seismic isolation device, the upper mounting plate and the upper plate are connected via a control piece into the opening for seismic isolation device installation. Front view of piles in dry condition
【図１４】この発明により免震化した建造物の正面図FIG. 14 is a front view of a building which has been seismically isolated by the present invention.
【図１５】この発明により免震化する既存の建造物の正
面図FIG. 15 is a front view of an existing building which is seismically isolated by the present invention.
１ 建造物 １ａ１〜１ａ４ 貫通孔 １Ａ 下側部 １Ａａ 上面 １Ｂ 上側部 １Ｂａ 下面 １Ｃ，１Ｄ 支持部 １Ｅ，１Ｆ 補強部 １Ｓｄ１〜３Ｓｄ３ 頭付き鉄筋（アンカー筋） １Ｌｐ 補強鉄筋 ２ 基礎体 ３ 建造物 ３ａ 地下階の柱 ３ｂ 突出板部 ４ 空間 ５ 耐圧盤 ６ 擁壁 ６ａ 突出部 ７ 山止壁 １０ 免震装置 １１ 積層ゴム １２，１３ 取付板 １２ａ，１３ａ ボルト孔 １４ 下側プレート １５ 上側プレート １４ａ，１５ａ 袋ナット １４ｃ，１５ｃ 頭付き鉄棒 １６Ａ，１６Ｂ 規制片 １８ 鋼製型枠 １８ａ 圧入管 Ａ 免震装置設置用の開口 ｂ ボルト ｎ ナット1 Buildings 1a 1 to 1a 4 Through hole 1A Lower part 1Aa Upper surface 1B Upper part 1Ba Lower surface 1C, 1D Supporting parts 1E, 1F Reinforcing parts 1Sd 1 to 3Sd 3 Rebar with head (anchor bar) 1Lp Reinforcing bar 2 Foundation 3 Building 3a Basement pillar 3b Protruding plate part 4 Space 5 Pressure plate 6 Retaining wall 6a Retaining wall 6a Projecting part 7 Mountain stop wall 10 Seismic isolation device 11 Laminated rubber 12, 13 Mounting plates 12a, 13a Bolt hole 14 Lower plate 15 Upper plate 14a, 15a Cap nuts 14c, 15c Headed iron bars 16A, 16B Control piece 18 Steel form 18a Press-fitting pipe A Opening for seismic isolation device installation b Bolt n Nut
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三宅 拓 東京都中央区銀座八丁目21番１号 株式会 社竹中工務店東京本店内 (72)発明者 岩崎 和義 東京都中央区銀座八丁目21番１号 株式会 社竹中工務店東京本店内 Ｆターム(参考） 2E176 AA04 BB28 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Taku Miyake 8-21-21 Ginza, Chuo-ku, Tokyo Stock market Takenaka Corporation Tokyo Main Store (72) Inventor Kazuyoshi Iwasaki 8-21-21 Ginza, Chuo-ku, Tokyo Stock market Takenaka Corporation Tokyo Main Store F-term (reference) 2E176 AA04 BB28
Claims (6)
にて地下の基礎体が支持され、地下の基礎体上に地上階
又は地下階及び地上階が複数階にわたって建造されてい
る既存の建造物への免震装置の設置方法において、前記
基礎体の下側の地盤を掘削して、基礎体の下側に空間を
形成し、該空間の下側にＲＣ造の耐圧盤を各杭と一体的
に新設して、新設の耐圧盤と基礎体との間に人が移動で
きる程度の高さの空間を形成し、前記空間に露出した杭
にその中心を水平な方向に貫通する免震装置設置用の開
口を形成して、杭の前記開口の左側及び右側に杭の前記
開口の上方の部分に作用する荷重を杭の前記開口の下方
の部分に伝達し得る連結部を切り残し、前記開口内に免
震装置を挿入し、免震装置の下側及び上側の取付板を杭
の前記開口の下側の下側部及びその上側の上側部に固着
してから、杭の前記開口の左側及び右側の切り残した連
結部を適宜の手段で除去することを特徴とする免震装置
の設置方法。1. An underground foundation body is supported by a large number of RC large-diameter piles provided underground, and a ground floor or an underground floor and a ground floor are constructed over a plurality of floors on the underground foundation body. In a method of installing a seismic isolation device in an existing building, the ground below the foundation is excavated to form a space below the foundation, and a pressure resistance of RC construction is provided below the space. A board is newly installed integrally with each pile to form a space between the newly installed pressure board and the foundation body that is high enough for a person to move, and the center of the pile exposed in the space is horizontal. A connection for forming a seismic isolation device through which the load acting on an upper portion of the opening of the pile is transferred to the left and right sides of the opening of the pile to the lower portion of the opening of the pile. With the part left uncut, insert the seismic isolation device into the opening, and attach the lower and upper mounting plates of the seismic isolation device to the lower side of the opening of the pile. Installation of seismic isolation device, and removing from the fixed to the upper portion of the lower side and upper side, the connecting portion leaving the left and right of the cut opening of the pile by an appropriate means.
にて地下の基礎体が支持され、地下の基礎体上に地上階
又は地下階及び地上階が複数階にわたって建造されてい
る既存の建造物への免震装置の設置方法において、前記
基礎体の下側の地盤を掘削して、基礎体の下側に空間を
形成し、該空間の下側にＲＣ造の耐圧盤を各杭と一体的
に新設して、新設の耐圧盤と基礎体との間に人が移動で
きる程度の高さの空間を形成し、前記空間に露出した杭
にその中心を水平な方向に貫通する免震装置設置用の開
口を形成して、杭の前記開口の左側及び右側に杭の前記
開口の上方の部分に作用する荷重を杭の前記開口の下方
の部分に伝達し得る連結部を切り残し、前記開口内に複
数基の免震装置を挿入し、各免震装置の下側及び上側の
取付板を杭の前記開口の下側の下側部及びその上側の上
側部に固着してから、杭の前記開口の左側及び右側の切
り残した連結部を適宜の手段で除去することを特徴とす
る免震装置の設置方法。2. An underground foundation body is supported by a large number of RC large-diameter piles provided underground, and a ground floor or a basement floor and a ground floor are constructed over a plurality of floors on the underground foundation body. In a method of installing a seismic isolation device in an existing building, the ground below the foundation is excavated to form a space below the foundation, and a pressure resistance of RC construction is provided below the space. A board is newly installed integrally with each pile to form a space between the newly installed pressure board and the foundation body that is high enough for a person to move, and the center of the pile exposed in the space is horizontal. A connection for forming a seismic isolation device through which the load acting on an upper portion of the opening of the pile is transferred to the left and right sides of the opening of the pile to the lower portion of the opening of the pile. With a portion left uncut, insert a plurality of seismic isolation devices into the opening, and attach the lower and upper mounting plates of each seismic isolation device to the pile. The seismic isolation device is characterized in that, after being fixed to the lower side of the lower side of the mouth and the upper side of the upper side thereof, the uncut left and right connecting portions of the opening of the pile are removed by appropriate means. Installation method.
にて地下の基礎体が支持され、地下の基礎体上に地上階
又は地下階及び地上階が複数階にわたって建造されてい
る既存の建造物への免震装置の設置方法において、前記
基礎体の下側の地盤を掘削して、基礎体の下側に空間を
形成し、該空間の下側にＲＣ造の耐圧盤を各杭と一体的
に新設して、新設の耐圧盤と基礎体との間に人が移動で
きる程度の高さの空間を形成し、前記空間に露出した杭
にその中心を水平な方向に貫通する縦断面が略矩形の免
震装置設置用の開口を形成して、杭の前記開口の左側及
び右側に杭の前記開口の上方の部分に作用する荷重を杭
の前記開口の下方の部分に伝達し得る連結部を切り残
し、杭の前記開口の下側の下側部及びその上側の上側部
に多数のアンカー機能のある鋼材片が間隔をおいて突設
され、かつ免震装置の下側及び上側の取付板の下側及び
上側に多数のアンカー機能のある袋ナットが固着されて
いる下側プレート及び上側プレートを配し、各取付板の
ボルト孔、各プレートのボルト孔にそれぞれボルトを差
し込み、各ボルトを各プレートに固着した袋ナットにね
じ込んで、免震装置の取付板にプレートを固着してなる
プレート付の免震装置が前記開口内の所定位置に配置さ
れた状態にして、前記杭の下側部と下側プレートとの間
の前記袋ナット、鋼材片等の配設域の周囲に型枠を配置
し、かつ前記杭の上側部と上側プレートとの間の前記袋
ナット、鋼材片等の配設域の周囲に型枠を配置し、各型
枠内にモルタル又はコンクリートを充填し、下側プレー
ト及び免震装置の下側の取付板を前記杭の下側部に固着
し、上側プレート及び免震装置の上側の取付板を前記杭
の上側部に固着してから、杭の前記開口の左側及び右側
の切り残した連結部を適宜の手段で除去することを特徴
とする免震装置の設置方法。3. An underground foundation is supported by a large number of RC large-diameter piles provided underground, and a ground floor or an underground floor and a ground floor are constructed over a plurality of floors on the underground foundation. In the method for installing a seismic isolation device in an existing building, the ground below the foundation body is excavated to form a space below the foundation body, and a pressure resistance of RC construction is provided below the space. A board is newly installed integrally with each pile to form a space between the newly installed pressure board and the foundation body that is high enough for a person to move, and the center of the pile exposed in the space is horizontal. An opening for installation of a seismic isolation device having a substantially rectangular longitudinal section passing through is formed on the left side and the right side of the opening of the pile, and the load acting on the upper part of the opening of the pile is provided below the opening of the pile. A plurality of anchor machines are provided on the lower side of the lower side of the opening of the pile and the upper side of the upper side of the pile, leaving a connecting portion that can be transmitted to the portion. Lower plate and upper plate in which steel pieces with a gap are projected at intervals, and a large number of cap nuts with an anchor function are fixed to the lower and upper sides of the lower and upper mounting plates of the seismic isolation device. A plate formed by inserting the bolts into the bolt holes of each mounting plate and the bolt holes of each plate, screwing each bolt into the cap nut fixed to each plate, and fixing the plate to the mounting plate of the seismic isolation device. With a seismic isolation device attached with the seismic isolation device arranged at a predetermined position in the opening, a formwork is provided around the installation area of the cap nut, steel piece, etc. between the lower part of the pile and the lower plate. And arranging the form nuts around the area where the cap nuts, steel pieces, etc. are arranged between the upper part of the pile and the upper plate, fill each form with mortar or concrete, and The side plate and the lower mounting plate of the seismic isolation device After fixing the upper plate and the upper mounting plate of the seismic isolation device to the upper part of the pile, fix the left and right uncut connection parts of the opening of the pile by appropriate means. A method of installing a seismic isolation device characterized by removing.
にて地下の基礎体が支持され、地下の基礎体上に地上階
又は地下階及び地上階が複数階にわたって建造されてい
る既存の建造物への免震装置の設置方法において、前記
基礎体の下側の地盤を掘削して、基礎体の下側に空間を
形成し、該空間の下側にＲＣ造の耐圧盤を各杭と一体的
に新設して、新設の耐圧盤と基礎体との間に人が移動で
きる程度の高さの空間を形成し、前記空間に露出した杭
にその中心を水平な方向に貫通する縦断面が略矩形の免
震装置設置用の開口を形成して、杭の前記開口の左側及
び右側に杭の前記開口の上方の部分に作用する荷重を杭
の前記開口の下方の部分に伝達し得る連結部を切り残
し、杭の前記開口の下側の下側部及びその上側の上側部
に多数のアンカー機能のある鋼材片が間隔をおいて突設
され、かつ免震装置の下側及び上側の取付板の下側及び
上側に多数のアンカー機能のある袋ナットが固着されて
いる下側プレート及び上側プレートを配し、各取付板の
ボルト孔、各プレートのボルト孔にそれぞれボルトを差
し込み、各ボルトを各プレートに固着した袋ナットにね
じ込んで、免震装置の取付板にプレートを固着してなる
プレート付の免震装置が前記開口内の所定位置に配置さ
れた状態にして、前記袋ナットや鋼材片の配設域の周囲
等に補強鉄筋を配し、前記杭の下側部と下側プレートと
の間の前記袋ナット、鋼材片、補強鉄筋等の配設域の周
囲に型枠を配置し、かつ前記杭の上側部と上側プレート
との間の前記袋ナット、鋼材片、補強鉄筋等の配設域の
周囲に型枠を配置し、各型枠内にモルタル又はコンクリ
ートを充墳し、下側プレート及び免震装置の下側の取付
板を前記杭の下側部に固着し、上側プレート及び免震装
置の上側の取付板を前記杭の上側部に固着してから、杭
の前記開口の左側及び右側の切り残した連結部を適宜の
手段で除去することを特徴とする免震装置の設置方法。4. An underground foundation body is supported by a large number of RC large-diameter piles provided underground, and a ground floor or an underground floor and a ground floor are constructed over a plurality of floors on the underground foundation body. In a method of installing a seismic isolation device in an existing building, the ground below the foundation is excavated to form a space below the foundation, and a pressure resistance of RC construction is provided below the space. A board is newly installed integrally with each pile to form a space between the newly installed pressure board and the foundation body that is high enough for a person to move, and the center of the pile exposed in the space is horizontal. An opening for installation of a seismic isolation device having a substantially rectangular longitudinal section passing through is formed on the left side and the right side of the opening of the pile, and the load acting on the upper part of the opening of the pile is provided below the opening of the pile. A plurality of anchor machines are provided on the lower side of the lower side of the opening of the pile and the upper side of the upper side of the pile, leaving a connecting portion that can be transmitted to the portion. Lower plate and upper plate in which steel pieces with a gap are projected at intervals, and a large number of cap nuts with an anchor function are fixed to the lower and upper sides of the lower and upper mounting plates of the seismic isolation device. A plate formed by inserting the bolts into the bolt holes of each mounting plate and the bolt holes of each plate, screwing each bolt into the cap nut fixed to each plate, and fixing the plate to the mounting plate of the seismic isolation device. With a seismic isolation device attached at a predetermined position in the opening, reinforced reinforcing bars are arranged around the area where the cap nuts and steel pieces are arranged, and the lower part of the pile and the lower plate. Forming a frame around the area where the cap nuts, steel pieces, reinforcing bars, etc., between the cap nuts, steel pieces, reinforcing bars, etc. between the upper part of the pile and the upper plate. Place molds around the area where the The bottom plate and the lower mounting plate of the seismic isolation device to the lower part of the pile, and the upper plate and the upper mounting plate of the seismic isolation device to the upper part of the pile. A method for installing a seismic isolation device, characterized in that, after being fixed, the left and right uncut connecting portions of the opening of the pile are removed by an appropriate means.
にて地下の基礎体が支持され、地下の基礎体上に地上階
又は地下階及び地上階が複数階にわたって建造されてい
る既存の建造物への免震装置の設置方法において、前記
基礎体の下側の地盤を掘削して、基礎体の下側に空間を
形成し、該空間の下側にＲＣ造の耐圧盤を各杭と一体的
に新設して、新設の耐圧盤と基礎体との間に人が移動で
きる程度の高さの空間を形成し、杭への免震装置設置用
の開口の形成に先行して、杭の開口を形成する部分の左
側及び右側の耐圧盤と基礎体との間の部分の外側に、Ｒ
Ｃ造の補強部を杭と一体に形成し、前記空間に露出した
杭にその中心を水平な方向に貫通する免震装置設置用の
開口を形成して、杭の前記開口の左側及び右側に杭の前
記開口の上方の部分に作用する荷重を杭の前記開口の下
方の部分に伝達し得る連結部を切り残し、前記開口内に
免震装置を挿入し、免震装置の下側及び上側の取付板を
杭の前記開口の下側の下側部及びその上側の上側部に固
着してから、杭の前記開口の左側及び右側の切り残した
前記補強部を含む連結部を適宜の手段で除去することを
特徴とする免震装置の設置方法。5. An underground foundation is supported by a large number of RC large-diameter piles provided underground, and a ground floor or a basement and ground floors are constructed over a plurality of floors on the underground foundation. In a method of installing a seismic isolation device in an existing building, the ground below the foundation is excavated to form a space below the foundation, and a pressure resistance of RC construction is provided below the space. A board is newly installed integrally with each pile to form a space between the newly installed pressure board and the foundation that is high enough for people to move, and to form an opening for installing the seismic isolation device on the pile. In advance, outside the part between the pressure plate and the foundation on the left and right of the part that forms the opening of the pile, R
A reinforcing part made of C is formed integrally with the pile, and an opening for installing a seismic isolation device that penetrates the center of the pile in the space in the horizontal direction is formed in the pile exposed to the left and right sides of the opening of the pile. The connection part that can transmit the load acting on the upper part of the opening of the pile to the lower part of the opening of the pile is left uncut, and the seismic isolation device is inserted into the opening, and the lower and upper sides of the seismic isolation device are inserted. After fixing the mounting plate of the above to the lower side of the lower side of the opening of the pile and the upper side of the upper side thereof, a connecting section including the reinforcing section left uncut on the left side and the right side of the opening of the pile is provided as appropriate means. A method for installing a seismic isolation device, which is characterized in that
所定の４か所に互いに平行で水平な方向の貫通孔をドリ
ルを使って穿設し、各貫通孔の中心軸線を縦断面が矩形
の免震装置設置用の開口の角部に位置させるようにし、
杭の左上の貫通孔と左下の貫通孔の間及び右上の貫通孔
と右下の貫通孔の間の部分を、略鉛直な面になるよう
に、ワイヤーソーを使って鉛直に切断し、かつ杭の左下
の貫通孔と右下の貫通孔の間及び杭の左上の貫通孔と右
上の貫通孔の間の部分を、略水平な面になるように、ワ
イヤーソーを使って水平に切断して、杭に縦断面が略矩
形の免震装置設置用の開口を形成することを特徴とする
請求項１〜５のいずれか一つの項記載の免震装置の設置
方法。6. A through hole is drilled at a predetermined four places in the middle of the pile exposed in the space below the foundation body in parallel and horizontal directions, and the central axis of each through hole is formed. Position it at the corner of the opening for installing the base isolation device with a rectangular vertical section,
Using a wire saw, cut vertically between the upper left through hole and the lower left through hole and between the upper right through hole and the lower right through hole so that the surface becomes a substantially vertical surface, and Use a wire saw to horizontally cut the part between the lower left through hole and the lower right through hole and between the upper left through hole and the upper right through hole of the pile so that it becomes a substantially horizontal surface. The method for installing a seismic isolation device according to any one of claims 1 to 5, wherein the pile is provided with an opening for installing a seismic isolation device having a substantially rectangular vertical section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001305822A JP3586835B2 (en) | 2001-08-27 | 2001-08-27 | Installation method of seismic isolation device on existing building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001305822A JP3586835B2 (en) | 2001-08-27 | 2001-08-27 | Installation method of seismic isolation device on existing building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003064882A true JP2003064882A (en) | 2003-03-05 |
| JP3586835B2 JP3586835B2 (en) | 2004-11-10 |
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ID=19125552
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001305822A Expired - Fee Related JP3586835B2 (en) | 2001-08-27 | 2001-08-27 | Installation method of seismic isolation device on existing building |
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| Country | Link |
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| JP (1) | JP3586835B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014159694A (en) * | 2013-02-19 | 2014-09-04 | Taisei Corp | Preload holding device |
| JP2016089480A (en) * | 2014-11-05 | 2016-05-23 | 大成建設株式会社 | Extension method for underground facility |
| IT202100005078A1 (en) | 2021-03-04 | 2022-09-04 | Next Innovation In Eng S R L | METHOD FOR INSERTING SEISMIC ISOLATORS IN STRUCTURAL ELEMENTS OF PRE-EXISTING STRUCTURES |
-
2001
- 2001-08-27 JP JP2001305822A patent/JP3586835B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014159694A (en) * | 2013-02-19 | 2014-09-04 | Taisei Corp | Preload holding device |
| JP2016089480A (en) * | 2014-11-05 | 2016-05-23 | 大成建設株式会社 | Extension method for underground facility |
| IT202100005078A1 (en) | 2021-03-04 | 2022-09-04 | Next Innovation In Eng S R L | METHOD FOR INSERTING SEISMIC ISOLATORS IN STRUCTURAL ELEMENTS OF PRE-EXISTING STRUCTURES |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3586835B2 (en) | 2004-11-10 |
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