JP3247591B2 - Existing building seismic isolation method - Google Patents
Existing building seismic isolation methodInfo
- Publication number
- JP3247591B2 JP3247591B2 JP28171595A JP28171595A JP3247591B2 JP 3247591 B2 JP3247591 B2 JP 3247591B2 JP 28171595 A JP28171595 A JP 28171595A JP 28171595 A JP28171595 A JP 28171595A JP 3247591 B2 JP3247591 B2 JP 3247591B2
- Authority
- JP
- Japan
- Prior art keywords
- existing
- seismic isolation
- piles
- isolation device
- pile
- 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.)
- Expired - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Working Measures On Existing Buildindgs (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、杭基礎の既存建物
を免震化する工法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for seismically isolating an existing building on a pile foundation.
【0002】[0002]
【従来の技術】従来、既存建物を免震化する工法として
は、図19乃至図24から理解される工法が一般的であ
る。すなわち、まず、山止壁施工をした後、既存建物下
部を掘削して既存杭周辺部を外部に露出させる(図1
9)。2. Description of the Related Art Conventionally, as a method of seismic isolation of an existing building, a method known from FIGS. 19 to 24 is generally used. That is, first, after a mountain retaining wall is constructed, the lower part of the existing building is excavated to expose the periphery of the existing pile to the outside (FIG. 1).
9).
【0003】次いで、露出した既存杭の外側位置におい
て、仮設支持杭の取り付け施工を行う(図20)。その
後、既存杭を全て切断すると共に、その切断箇所上部に
新設の基礎を形成する(図21)。さらに、免震装置を
既存建物の下面と新設基礎の上面の間に設置すると共に
(図22)、フラットジャッキ等で免震装置を加力して
該免震装置上方にグラウトを充填する(図23)。[0003] Next, a temporary support pile is mounted at an exposed position outside the existing pile (Fig. 20). Thereafter, all the existing piles are cut, and a new foundation is formed above the cut portion (FIG. 21). Furthermore, the seismic isolation device is installed between the lower surface of the existing building and the upper surface of the new foundation (Fig. 22), and grout is filled above the seismic isolation device by applying force to the seismic isolation device using a flat jack or the like (Fig. 22). 23).
【0004】そして、最後に前記仮設支持杭、フラット
ジャッキ等を撤去して免震化を完了するものである。[0004] Finally, the temporary support pile, the flat jack and the like are removed to complete the seismic isolation.
【0005】[0005]
【発明が解決しようとする課題】しかし、かかる従来の
工法では、既存建物の全体を仮支持する鋼管杭等の仮設
支持杭を取り付け施行する必要があり、作業が面倒であ
ると共に、その分だけ施工コストが増加するとの課題が
あった。また、従来では、鋼管杭等の仮設支持杭で既存
建物を支持することとしているので、全ての既存杭切断
時に大地震等の大きな外力が前記既存建物に作用した場
合の課題があった。However, in such a conventional construction method, it is necessary to install a temporary support pile such as a steel pipe pile for temporarily supporting the entire existing building, which is troublesome and requires only a corresponding amount of work. There was a problem that construction costs would increase. Conventionally, the existing building is supported by a temporary supporting pile such as a steel pipe pile, so that there is a problem when a large external force such as a large earthquake acts on the existing building at the time of cutting all the existing piles.
【0006】かくして、本発明は上記課題に対処するた
めに創案されたものであって、既存建物の全体を仮支持
する鋼管杭等の仮設支持杭を取り付け施行する必要がな
く、免震化作業を簡単に行え、その分だけ施工コストを
安価にすることが出来る。また、従来の様に、全ての既
存杭切断時に大地震等の大きな外力が前記既存建物に作
用した場合の課題がない既存建物の免震化工法を提供す
ることを目的とするものである。Thus, the present invention has been devised in order to address the above-mentioned problems, and there is no need to attach and carry out temporary support piles such as steel pipe piles for temporarily supporting the entire existing building, and to perform seismic isolation work. And the construction cost can be reduced accordingly. It is another object of the present invention to provide a seismic isolation method for an existing building which has no problem when a large external force such as a large earthquake acts on the existing building at the time of cutting all existing piles as in the related art.
【0007】[0007]
【課題を解決するための手段】第1発明にかかる既存建
物の免震化工法は、既存建物の下方を掘削して該既存建
物を支持する既存杭を露出させ、次いで前記既存杭を内
部に埋没させて新基礎を形成し、前記新基礎上面と既存
建物下面との間に露出する既存杭のうち、免震装置の設
置につき障害となる杭を切断して免震装置を取り付けて
なり、その後、残余の既存杭を切断することを特徴と
し、第2発明にかかる既存建物の免震化工法は、既存建
物を支持する既存杭を露出させ、該既存杭外周面に凹凸
面生成材を接着させると共に、埋没させて基礎を形成
し、前記基礎上面と既存建物下面との間に露出する既存
杭のうち、免震装置の設置に障害となる杭を切断して免
震装置を取り付けてなり、その後、残余の既存杭を切断
することを特徴とし、また、第3発明にかかる既存建物
の免震化工法は、既存建物を支持する複数の既存杭を露
出させ、該既存杭外周面に凹凸面生成材を接着させると
共に、凹凸面生成材を接着させた既存杭を埋没させて新
設のコンクリート基礎を形成し、前記新設コンクリート
基礎上面と既存建物下面との間に露出する既存杭のう
ち、免震装置の設置に障害となる杭を切断して免震装置
を取り付け、その後、残余の既存杭を切断してなり、前
記免震装置と既存建物との接合は、免震装置及び既存建
物各々から突出させたアンカーを免震装置と既存建物と
の間に形成した接合躯体内に埋設固定することにより行
ったことを特徴とし、第4発明にかかる既存建物の免震
化工法は、既存建物を支持する複数の既存杭を露出さ
せ、該既存杭外周面に凹凸面生成材を接着させると共
に、凹凸面生成材を接着させた既存杭を埋没させて新設
のコンクリート基礎を形成し、前記新設コンクリート基
礎上面と既存建物下面との間に露出する既存杭のうち、
免震装置の設置に障害となる杭を切断して免震装置を取
り付け、その後、残余の既存杭を切断してなり、切断し
た既存杭の切断上面には、突出阻止用の補強部材が設け
られたことを特徴として構成されている。In the seismic isolation method for an existing building according to the first invention, the existing pile is supported by excavating below the existing building to expose the existing pile supporting the existing building. A new foundation is formed by being buried, and of the existing piles exposed between the upper surface of the new foundation and the lower surface of the existing building, a pile that is an obstacle to the installation of the seismic isolation device is cut and the seismic isolation device is attached, Thereafter, the remaining existing piles are cut off, and the seismic isolation method of the existing building according to the second invention exposes the existing piles supporting the existing building, and forms an uneven surface forming material on the outer peripheral surface of the existing piles. Attached and buried to form a foundation, and among the existing piles exposed between the upper surface of the foundation and the lower surface of the existing building, cut off the piles that hinder the installation of the seismic isolation device and attach the seismic isolation device. After that, it is characterized by cutting the remaining existing piles, Further, the seismic isolation method for an existing building according to the third invention exposes a plurality of existing piles that support the existing building, adheres the uneven surface generating material to the outer peripheral surface of the existing pile, and bonds the uneven surface generating material. The existing piles buried are buried to form a new concrete foundation, and among the existing piles exposed between the upper surface of the new concrete foundation and the lower surface of the existing building, the piles that obstruct the installation of the seismic isolation device are cut. After installing the seismic isolation device, the remaining existing piles were cut off, and the connection between the seismic isolation device and the existing building was made by connecting the seismic isolation device and the anchor protruding from each existing building to the seismic isolation device and the existing building. The seismic isolation method for an existing building according to the fourth invention is characterized by exposing a plurality of existing piles that support the existing building, Adhesion of irregular surface generating material on pile outer surface Rutotomoni, by burying the existing pile adhered an irregular surface produced material to form the concrete foundation of the new, of the existing pile exposed between the existing buildings lower surface and said new concrete foundation upper surface,
The stakes that are obstacles to the installation of the seismic isolation device are cut and the seismic isolation device is attached, and then the remaining existing stake is cut, and a reinforcing member is provided on the cut upper surface of the cut existing stake to prevent protrusion. It is characterized by having been done.
【0008】[0008]
【発明の実施の形態】以下、図に基づいて本発明の好適
な実施の形態につき説明する。まず、本発明の概略を図
13乃至図18に示す。すなわち、山止壁施工をした
後、既存建物1の下方を掘削して既存杭2・・・周辺部
を外部に露出させる(図13)。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, the outline of the present invention is shown in FIGS. That is, after the mountain retaining wall is constructed, the lower part of the existing building 1 is excavated to expose the existing piles 2...
【0009】次いで、露出した既存杭2・・・の外周面
に接着剤3を塗布し、砕骨材4・・・を接着させる(図
13)。なお、砕骨材4・・・の接着は、後述する新設
基礎5の作成箇所までの高さでよい。その後、砕骨材4
・・・を接着させた既存杭2・・・を内部に埋没させる
様にして新設基礎5を形成する(図14)。そして、該
新設基礎5の形状は図14に示すように略方形状の山形
とし、新基礎5の上部と既存基礎15の下部との間には
免震装置9が設置できる程度の間隔をあけておくものと
する。Then, an adhesive 3 is applied to the exposed outer peripheral surfaces of the existing piles 2 to bond the crushed aggregates 4 (FIG. 13). It is to be noted that the adhesion of the crushed aggregates 4... Then, crushed aggregate 4
Are buried inside to form a new foundation 5 (FIG. 14). The shape of the new foundation 5 is a substantially square mountain shape as shown in FIG. 14, and a space is provided between the upper part of the new foundation 5 and the lower part of the existing foundation 15 such that the seismic isolation device 9 can be installed. Shall be kept.
【0010】そして、免震装置9を設置できる程度のス
ペースを確保出来るよう、略中心に位置する既存杭2は
切断する(図15)と共に、該切断箇所に免震装置9を
仮設置するのである(図16)。次いで、ジャッキで免
震装置に加力し、該免震装置9上方位置にグラウトを充
填し、グラウト固化後にはジャッキを撤去すると共に、
グラウト周辺部にコンクリートを充填し(図17)、そ
の後、残余の既存杭2・・・を全てを切断して免震装置
9の本設置を完了し、もって既存建物1の免震化を終了
させるのである。Then, the existing pile 2 located substantially at the center is cut (FIG. 15) and the seismic isolation device 9 is temporarily installed at the cut portion so that a space enough to install the seismic isolation device 9 can be secured. (FIG. 16). Then, a jack is applied to the seismic isolation device, grout is filled above the seismic isolation device 9, and after the grout is solidified, the jack is removed.
Concrete is filled around the grout (Fig. 17), and the remaining existing piles 2 ... are all cut off to complete the permanent installation of the seismic isolation device 9, thereby completing the existing building 1 seismic isolation. Let it do.
【0011】以上、本発明の概略に基づき、さらに本発
明を具体的に説明する。図1及び図2に既存杭2が5本
の場合の既存建物1の免震化工法につき説明する。ま
ず、図2において示す符号Hの掘削ラインまで既存建物
1の下部を掘削し、5本の既存杭2・・・を外部に露出
させる。The present invention will be described more specifically based on the outline of the present invention. The seismic isolation method of the existing building 1 in the case of five existing piles 2 will be described with reference to FIGS. 1 and 2. First, the lower part of the existing building 1 is excavated to the excavation line indicated by the symbol H in FIG. 2 to expose five existing piles 2.
【0012】その後、露出させた既存杭2・・・の外周
面に接着剤3を塗布し、その面に砕骨材4・・・を接着
させる(図13、図14)。尚、この砕骨材4・・・の
接着長さは、新設基礎5の形成高さまでで良い。しかし
て、砕骨材4・・・の接着を確認した後、5本の既存杭
2・・・を内部に埋没させる様にして新設基礎5を形成
する。Thereafter, an adhesive 3 is applied to the exposed outer peripheral surfaces of the existing piles 2 and the crushed aggregates 4 are adhered to the surfaces (FIGS. 13 and 14). Note that the bonding length of the crushed aggregates 4... May be up to the formation height of the new foundation 5. After confirming the adhesion of the crushed aggregates 4, the new foundation 5 is formed by burying the five existing piles 2 in the interior.
【0013】ここで、既存杭2・・・の外周面には砕骨
材4・・・を接着させてあるため、新設基礎と既存杭2
・・・との接着が良好となり、長年の使用によってもひ
び割れ、隙間の発生及び既存杭2・・・の上方突出等を
生じさせないものとなる。尚、図2から理解されるよう
に、新設基礎5内には、設置された免震装置9の外側方
向において、最終的に切断する残余の既存杭2・・・周
辺下方にはアンカー部材6・・・があらかじめ埋設され
ている。Here, since the crushed aggregates 4... Are adhered to the outer peripheral surface of the existing piles 2.
Are good, and cracks and gaps are not generated even after many years of use, and the existing piles 2. As can be understood from FIG. 2, in the new foundation 5, in the outer direction of the installed seismic isolation device 9, the remaining existing piles 2 to be finally cut 2... ... are buried in advance.
【0014】後述するように、残余の既存杭5・・・を
切断したとき、該切断した既存杭5・・・の切断上面が
せり上がらないように、補強部材7が被せられる。そし
て、この補強部材7と接続できるよう、前記アンカー部
材6・・・には接続部8が設けられている。通常この接
続部8はカプラーとして構成されており、補強部材7か
らねじ状の接続部材をねじ込むことにより前記補強部材
7を強固に既存杭2の切断上面に固定出来るように構成
されている。As will be described later, when the remaining existing piles 5 are cut, the reinforcing members 7 are covered so that the cut upper surfaces of the cut existing piles 5 do not rise. The anchor members 6 are provided with connecting portions 8 so that they can be connected to the reinforcing members 7. Usually, the connecting portion 8 is configured as a coupler, and is configured so that the reinforcing member 7 can be firmly fixed to the cut upper surface of the existing pile 2 by screwing a screw-shaped connecting member from the reinforcing member 7.
【0015】新設基礎5が形成され、充分に固化した
後、免震装置9が設置される。該免震装置9の構成につ
いては何等限定されるものではなく、通常一般に使用さ
れているものが用いられる。ここでは、図から理解され
るように、新設基礎5の上面に敷設される鉄板状の下板
10と、その下板10の上に鉄板11とゴムシート12
を交互に積層して略円柱状の厚みに形成し、その上に鉄
板状の上板13を取り付けて、いわゆる積層ゴム支承と
して免震装置9を構成している。After the new foundation 5 has been formed and fully solidified, the seismic isolation device 9 is installed. The structure of the seismic isolation device 9 is not limited at all, and a commonly used structure is used. Here, as understood from the figure, an iron plate-shaped lower plate 10 laid on the upper surface of the new foundation 5, an iron plate 11 and a rubber sheet 12 are placed on the lower plate 10.
Are alternately laminated to form a substantially columnar thickness, and an iron plate-like upper plate 13 is mounted thereon to form the seismic isolation device 9 as a so-called laminated rubber bearing.
【0016】しかして、前記免震装置9の上方と既存建
物1の既存基礎15の下方との間にはグラウトが注入、
充填されて接合躯体14が形成されるが、該接合躯体1
4を介しての免震装置9と既存基礎15との接合は以下
のように行われる。すなわち、免震装置9及び既存基礎
15の各々からそれぞれ突出させたアンカー部材6・・
・を接合躯体14内に延ばし、該接合躯体内14で埋設
固定するのである。Thus, grout is injected between the upper part of the seismic isolation device 9 and the lower part of the existing foundation 15 of the existing building 1.
The joint body 14 is formed by filling.
The connection between the seismic isolation device 9 and the existing foundation 15 via 4 is performed as follows. That is, the anchor members 6 projecting from the seismic isolation device 9 and the existing foundation 15, respectively.
Is extended into the joint body 14 and buried and fixed in the joint body 14.
【0017】ここで、既存基礎15内には複数本の鉄筋
が配筋されており、直接免震装置9側から長尺のアンカ
ー部材6を既存基礎15内に突出すると、前記既存基礎
15内の鉄筋に当たってしまい、免震装置9と既存基礎
15との良好な連結が出来ない。よって、本発明では接
合躯体14を設け、免震装置9及び既存基礎15の各々
からそれぞれ突出させたアンカー部材6・・・を接合躯
体14内に延ばし、該接合躯体内14で埋設固定するの
である。これにより、迅速、簡単な施工作業で免震装置
9と既存基礎15との良好な連結が得られる。Here, a plurality of reinforcing bars are arranged in the existing foundation 15, and when the long anchor member 6 is directly projected from the seismic isolation device 9 side into the existing foundation 15, the existing foundation 15 is The seismic isolation device 9 and the existing foundation 15 cannot be connected well. Therefore, in the present invention, the joint frame 14 is provided, and the anchor members 6... Protruding from each of the seismic isolation device 9 and the existing foundation 15 are extended into the joint frame 14 and embedded and fixed in the joint frame 14. is there. Thereby, good connection between the seismic isolation device 9 and the existing foundation 15 can be obtained with a quick and simple construction work.
【0018】次に図3及び図4に示すように既存杭2が
4本の場合について述べる。この場合、4本の既存杭2
の内いずれか1本を切断し、その切断箇所から免震装置
9を設置するものとしている。しかしてそれ以外の施工
作業については、既存杭2が5本の場合と何等変わらな
いものである。さらに図5及び図6には既存杭2が6本
の場合が示されており、この場合には図示されるように
中央部の2本を先に切断し、免震装置9を設置するもの
とされている。Next, a case where the number of the existing piles 2 is four as shown in FIGS. 3 and 4 will be described. In this case, four existing piles 2
Any one of them is cut, and the seismic isolation device 9 is installed from the cut portion. The other construction work is no different from the case where the number of the existing piles 2 is five. Further, FIGS. 5 and 6 show a case where the number of the existing stakes 2 is six. In this case, as shown in FIG. It has been.
【0019】そして、この実施態様の場合には、新設基
礎5を平面から見て略菱形状に形成し、かつ切断した2
本の既存杭2、2の外側には各々補強杭16、16を立
設して図6に示すように補強しておくものとする。この
補強杭16、16は新設基礎5内に埋め込まれるが、免
震装置9が設置された後、ジャッキ17と補強杭16の
露出している部分は切除される。In the case of this embodiment, the new foundation 5 is formed into a substantially rhombic shape when viewed from a plane, and is cut.
Reinforcement piles 16, 16 are erected outside the existing piles 2, 2, respectively, and reinforced as shown in FIG. The reinforcing piles 16 and 16 are embedded in the new foundation 5, but after the seismic isolation device 9 is installed, the exposed portions of the jack 17 and the reinforcing pile 16 are cut off.
【0020】この実施態様では切除しやすいように、分
割型の補強杭16とされている。図7及び図8は既存杭
2が3本の場合であり、この場合は3本の内いずれか1
本を切断し、その切断箇所から免震装置9を設置するも
のとされ、かつ切断した1本の既存杭2の外側には補強
杭16が立設されて図8に示されるように補強される。In this embodiment, a split type reinforcing pile 16 is provided so as to be easily cut off. 7 and 8 show a case where the number of the existing stakes 2 is three. In this case, one of the three stakes 2 is used.
The book is cut, and the seismic isolation device 9 is to be installed from the cut portion. A reinforcing pile 16 is erected outside the cut existing pile 2 to be reinforced as shown in FIG. You.
【0021】図9及び図10は既存杭2が2本の場合で
あり、この場合には、2本が切断の対象となると共に、
新設基礎5に埋設されない補強杭2、2が図に示すよう
に立設される。そして、最終的には該補強杭2、2は取
り外される。図11及び図12は1本の既存杭2の場合
で、この場合は仮の支保工18と仮設ジャッキ19が用
いられ、既存杭2を切断して、免震装置9を設置した
後、これら仮の支保工18と仮設ジャッキ20は取り外
される。FIGS. 9 and 10 show a case where the number of the existing piles 2 is two. In this case, the two piles are to be cut, and
The reinforcing piles 2, 2 which are not buried in the new foundation 5 are erected as shown in the figure. Then, the reinforcing piles 2 are finally removed. 11 and 12 show the case of one existing pile 2, in which a temporary shoring 18 and a temporary jack 19 are used, the existing pile 2 is cut, and the seismic isolation device 9 is installed. The temporary supporter 18 and the temporary jack 20 are removed.
【0022】[0022]
【発明の効果】本発明は以上の構成よりなる。そして本
発明による既存建物の免震化工法によれば、既存建物の
全体を仮支持する鋼管杭等の仮設支持杭を取り付け施行
する必要がなく、免震化作業を簡単に行え、その分だけ
施工コストを安価にすることが出来る。The present invention has the above configuration. According to the seismic isolation method of the existing building according to the present invention, there is no need to attach and carry out temporary supporting piles such as steel pipe piles for temporarily supporting the entire existing building, and the seismic isolation work can be easily performed, and only that much The construction cost can be reduced.
【0023】また、従来の様に、全ての既存杭切断時に
大地震等の大きな外力が前記既存建物に作用した場合の
課題が生じない。Further, there is no problem when a large external force such as a large earthquake acts on the existing building at the time of cutting all the existing piles as in the prior art.
【図1】本発明の構成を示す説明図(その1)である。FIG. 1 is an explanatory diagram (part 1) illustrating a configuration of the present invention.
【図2】本発明の構成を示す説明図(その2)である。FIG. 2 is an explanatory diagram (part 2) illustrating the configuration of the present invention.
【図3】本発明の構成を示す説明図(その3)である。FIG. 3 is an explanatory diagram (part 3) illustrating the configuration of the present invention;
【図4】本発明の構成を示す説明図(その4)である。FIG. 4 is an explanatory view (No. 4) showing the configuration of the present invention;
【図5】本発明の構成を示す説明図(その5)である。FIG. 5 is an explanatory view (No. 5) showing the configuration of the present invention;
【図6】本発明の構成を示す説明図(その6)である。FIG. 6 is an explanatory view (No. 6) showing the configuration of the present invention;
【図7】本発明の構成を示す説明図(その7)である。FIG. 7 is an explanatory view (No. 7) showing the configuration of the present invention;
【図8】本発明の構成を示す説明図(その8)である。FIG. 8 is an explanatory view (No. 8) showing the configuration of the present invention;
【図9】本発明の構成を示す説明図(その9)である。FIG. 9 is an explanatory view (No. 9) showing the configuration of the present invention;
【図10】本発明の構成を示す説明図(その10)であ
る。FIG. 10 is an explanatory view (No. 10) showing the configuration of the present invention.
【図11】本発明の構成を示す説明図(その11)であ
る。FIG. 11 is an explanatory view (No. 11) showing the configuration of the present invention;
【図12】本発明の構成を示す説明図(その12)であ
る。FIG. 12 is an explanatory view (12) of the configuration of the present invention.
【図13】本発明の概略工程を示す説明図(その1)で
ある。FIG. 13 is an explanatory view (No. 1) showing a schematic process of the present invention.
【図14】本発明の概略工程を示す説明図(その2)で
ある。FIG. 14 is an explanatory view (No. 2) showing a schematic process of the present invention.
【図15】本発明の概略工程を示す説明図(その3)で
ある。FIG. 15 is an explanatory view (No. 3) showing a schematic process of the present invention.
【図16】本発明の概略工程を示す説明図(その4)で
ある。FIG. 16 is an explanatory view (No. 4) showing a schematic process of the present invention.
【図17】本発明の概略工程を示す説明図(その5)で
ある。FIG. 17 is an explanatory view (No. 5) showing a schematic step of the present invention.
【図18】本発明の概略工程を示す説明図(その6)で
ある。FIG. 18 is an explanatory view (No. 6) showing a schematic step of the present invention.
【図19】従来例の概略工程を示す説明図(その1)で
ある。FIG. 19 is an explanatory view (No. 1) showing a schematic process of a conventional example.
【図20】従来例の概略工程を示す説明図(その2)で
ある。FIG. 20 is an explanatory view (No. 2) showing a schematic process of a conventional example.
【図21】従来例の概略工程を示す説明図(その3)で
ある。FIG. 21 is an explanatory view (No. 3) showing a schematic step of the conventional example.
【図22】従来例の概略工程を示す説明図(その4)で
ある。FIG. 22 is an explanatory view (No. 4) showing a schematic step of the conventional example.
【図23】従来例の概略工程を示す説明図(その5)で
ある。FIG. 23 is an explanatory view (No. 5) showing a schematic step of the conventional example.
【図24】従来例の概略工程を示す説明図(その6)で
ある。FIG. 24 is an explanatory view (No. 6) showing a schematic step of the conventional example.
1 既存建物 2 既存杭 3 接着剤 4 砕骨材 5 新設基礎 6 アンカー部材 7 補強部材 8 接続部 9 免震装置 10 下板 11 鉄板 12 ゴムシート 13 上板 14 接合躯体 15 既存基礎 16 補強杭 17 ジャッキ 18 仮の支保工 19 仮設ジャッキ H 掘削ライン DESCRIPTION OF SYMBOLS 1 Existing building 2 Existing pile 3 Adhesive 4 Crushed aggregate 5 New foundation 6 Anchor member 7 Reinforcement member 8 Connection part 9 Seismic isolation device 10 Lower plate 11 Iron plate 12 Rubber sheet 13 Upper plate 14 Joining frame 15 Existing foundation 16 Reinforcement pile 17 Jack 18 Temporary Shoring 19 Temporary Jack H Drilling Line
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮永 英彦 東京都千代田区三番町2番地 飛島建設 株式会社内 (72)発明者 久保田 雅春 東京都千代田区三番町2番地 飛島建設 株式会社内 (56)参考文献 特開 平8−284177(JP,A) (58)調査した分野(Int.Cl.7,DB名) E04G 23/02 E04H 9/02 331 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hidehiko Miyanaga 2nd Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. (72) Inventor Masaharu Kubota 2nd Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. 56) References JP-A-8-284177 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E04G 23/02 E04H 9/02 331
Claims (4)
支持する既存杭を露出させ、次いで前記既存杭を内部に
埋没させて新基礎を形成し、 前記新基礎上面と既存建物下面との間に露出する既存杭
のうち、免震装置の設置につき障害となる杭を切断して
免震装置を取り付けてなり、 その後、残余の既存杭を切断することを特徴とする既存
建物の免震化工法。1. Excavating a lower part of an existing building to expose an existing pile supporting the existing building, and then burying the existing pile inside to form a new foundation. The existing piles that are exposed during the installation are cut off the piles that are obstacles to the installation of the seismic isolation device, and the seismic isolation device is attached, and then the remaining existing piles are cut off. Seismic method.
該既存杭外周面に凹凸面生成材を接着させると共に、埋
没させて基礎を形成し、 前記基礎上面と既存建物下面との間に露出する既存杭の
うち、免震装置の設置につき障害となる杭を切断して免
震装置を取り付けてなり、 その後、残余の既存杭を切断することを特徴とする既存
建物の免震化工法。2. Exposing an existing pile supporting an existing building,
Adhering and burying the uneven surface generating material on the outer peripheral surface of the existing pile to form a foundation, and among the existing piles exposed between the upper surface of the foundation and the lower surface of the existing building, there is an obstacle to installing a seismic isolation device. A seismic isolation method for existing buildings characterized by cutting piles and installing seismic isolation devices, and then cutting the remaining existing piles.
させ、該既存杭外周面に凹凸面生成材を接着させると共
に、凹凸面生成材を接着させた既存杭を埋没させて新設
のコンクリート基礎を形成し、 前記新設コンクリート基礎上面と既存建物下面との間に
露出する既存杭のうち、免震装置の設置につき障害とな
る杭を切断して該空間に免震装置を取り付け、その後、
残余の既存杭を切断してなり、 前記免震装置と既存建物との接合は、免震装置及び既存
建物各々から突出させたアンカーを免震装置と既存建物
との間に形成した接合躯体内に埋設固定することにより
行ったことを特徴とする既存建物の免震化工法。3. A method of exposing a plurality of existing piles for supporting an existing building, bonding an uneven surface forming material to an outer peripheral surface of the existing pile, and burying the existing pile to which the uneven surface generating material is bonded, thereby newly installing concrete. Forming a foundation, of the existing piles exposed between the upper surface of the new concrete foundation and the lower surface of the existing building, cutting the piles obstructing the installation of the seismic isolation device and attaching the seismic isolation device to the space,
The remaining existing piles are cut off, and the connection between the seismic isolation device and the existing building is made by connecting the seismic isolation device and the anchor protruding from each of the existing buildings between the seismic isolation device and the existing building. A seismic isolation method for an existing building, which was carried out by burying and fixing the building.
させ、該既存杭外周面に凹凸面生成材を接着させると共
に、凹凸面生成材を接着させた既存杭を埋没させて新設
のコンクリート基礎を形成し、 前記新設コンクリート基礎上面と既存建物下面との間に
露出する既存杭のうち、免震装置の設置につき障害とな
る杭を切断して免震装置を取り付け、その後、残余の既
存杭を切断してなり、 切断した既存杭の切断上面には、突出阻止用の補強部材
が設けられたことを特徴とする既存建物の免震化工法。4. A method of exposing a plurality of existing piles for supporting an existing building, bonding an uneven surface forming material to an outer peripheral surface of the existing pile, and burying the existing pile to which the uneven surface forming material is bonded, and newly laying concrete. The foundation is formed, and among the existing piles exposed between the upper surface of the new concrete foundation and the lower surface of the existing building, the piles that are obstacles to the installation of the seismic isolation device are cut and the seismic isolation device is attached, and then the remaining existing A seismic isolation method for an existing building, in which a pile is cut, and a reinforcing member for preventing protrusion is provided on the cut upper surface of the cut existing pile.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28171595A JP3247591B2 (en) | 1995-10-30 | 1995-10-30 | Existing building seismic isolation method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28171595A JP3247591B2 (en) | 1995-10-30 | 1995-10-30 | Existing building seismic isolation method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09125705A JPH09125705A (en) | 1997-05-13 |
JP3247591B2 true JP3247591B2 (en) | 2002-01-15 |
Family
ID=17642981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28171595A Expired - Fee Related JP3247591B2 (en) | 1995-10-30 | 1995-10-30 | Existing building seismic isolation method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3247591B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5749620B2 (en) * | 2011-09-30 | 2015-07-15 | 株式会社竹中工務店 | Seismic isolation method for existing buildings |
JP5870015B2 (en) * | 2012-12-12 | 2016-02-24 | 株式会社横河ブリッジホールディングス | Seismic isolation device installation method and base isolation device installation structure for foundation pillars of existing buildings |
-
1995
- 1995-10-30 JP JP28171595A patent/JP3247591B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH09125705A (en) | 1997-05-13 |
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