JP2984727B2 - Building seismic retrofitting method - Google Patents
Building seismic retrofitting methodInfo
- Publication number
- JP2984727B2 JP2984727B2 JP7193103A JP19310395A JP2984727B2 JP 2984727 B2 JP2984727 B2 JP 2984727B2 JP 7193103 A JP7193103 A JP 7193103A JP 19310395 A JP19310395 A JP 19310395A JP 2984727 B2 JP2984727 B2 JP 2984727B2
- Authority
- JP
- Japan
- Prior art keywords
- precast concrete
- building
- wall
- reinforcing
- built
- 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
- Load-Bearing And Curtain Walls (AREA)
- Working Measures On Existing Buildindgs (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、建物の耐
震補強工法として既存建物の耐震性の不足を補うような
補強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 reinforcing a building, for example, to compensate for the lack of earthquake resistance of an existing building.
【０００２】[0002]
【従来の技術】既存建物の耐震性を補強する方法とし
て、従来、柱・梁の建物骨組間に耐震壁を現場打ちで施
工して付加する工法や既設の鉄筋コンクリート柱の外周
に鋼板を建て込み、これを溶接などで一体化する鋼板巻
立て工法、既設の鉄筋コンクリート柱の表面にガラス繊
維やカーボン繊維など高張力繊維からなる繊維補強材料
を巻き付けるＦＲＰ巻立て工法、あるいは、骨組間に鉄
骨のブレースを挿入する工法などがある。2. Description of the Related Art Conventionally, as a method of reinforcing the seismic resistance of an existing building, a conventional construction method is to add an earthquake-resistant wall between a column and a beam frame by being cast in place, or a steel plate is built around an existing reinforced concrete column. , A steel plate wrapping method that integrates this by welding, a FRP wrapping method that wraps a fiber-reinforced material made of high-tensile fiber such as glass fiber or carbon fiber on the surface of an existing reinforced concrete column, or a steel frame brace between frames There is a construction method to insert.
【０００３】このうち、前記耐震壁を増設する工法は、
骨組間に補強筋を配し、型枠を設置した後、場所打ちコ
ンクリートを打設する。[0003] Among them, the method of constructing the earthquake-resistant wall is as follows.
After placing reinforcing bars between the frames and installing the formwork, cast-in-place concrete is cast.
【０００４】[0004]
【発明が解決しようとする課題】耐震壁を増設する工法
は、場所打ちコンクリートを打設するため湿式工法とな
り、配筋作業やコンクリート打設の手間、さらにコンク
リート硬化の養生期間を確保しなければならないなど労
力と時間を必要とし、また、大きな作業空間を必要とす
るので、オフィスビルなどの建物では、執務状態のまま
で作業することは困難であり、施工中はオフィスビルと
しての機能が損なわれる。The construction method for adding an earthquake-resistant wall is a wet construction method for casting cast-in-place concrete, and it is necessary to secure the time required for rebar work and concrete placement, and for the curing period of concrete hardening. It requires labor and time, and requires a large work space, so it is difficult to work in an office building or the like while working, and the function of the office building is impaired during construction. It is.
【０００５】また、骨組内に鉄骨のブレースを挿入する
工法は、ブレースを構成する部材重量が大きくなって作
業用の重機が必要となり、その結果、作業のために建物
を専有する必要があり、騒音や振動も発生して、やは
り、施工中は、オフィスビルとしての機能が損なわれ
る。In the method of inserting a steel brace into a frame, the weight of members constituting the brace increases, and heavy equipment for work is required. As a result, it is necessary to occupy a building exclusively for work. Noise and vibration are also generated, and the function as an office building is lost during construction.
【０００６】本発明の目的は前記従来例の不都合を解消
し、建物内で大型の作業用機械などを必要とせずに、簡
単かつ迅速に施工でき、既存建物への施工では、大きな
作業空間も不要で、騒音や振動も発生せず、執務状態の
まま補強作業ができる建物の耐震補強工法を提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to easily and quickly perform construction without requiring a large-sized work machine in a building. It is an object of the present invention to provide a seismic retrofitting method for a building that is unnecessary, does not generate noise or vibration, and can be reinforced while working.
【０００７】[0007]
【課題を解決するための手段】本発明は前記目的を達成
するため、建物の骨組間に、人力で運べる程度に分割し
たものとして軽量コンクリートを用い、かつ、壁筋を内
蔵したプレキャストコンクリート板を建込むが、このプ
レキャストコンクリート板は複数枚張り合わせて補強壁
を形成するように建込み、その際、建物躯体に打ち込ん
だ後施工アンカーに接続するアンカー筋であり、また、
プレキャストコンクリート板の曲げ補強、さらには剪断
ズレ補強となる補強筋としての役割を担う鉄筋を前記プ
レキャストコンクリート板に形成したコッター用凹部内
に内蔵させ、この凹部内にグラウト材を充填したことを
要旨とするものである。In order to achieve the above-mentioned object, the present invention provides a precast concrete plate which uses light-weight concrete as a member which can be transported by human power and which has built-in wall reinforcement between frames of a building. Although this precast concrete board is built so as to form a reinforcing wall by laminating a plurality of precast concrete boards, it is an anchor bar connected to the construction anchor after driving into the building frame,
Reinforcing bars that serve as reinforcing bars for reinforcing the bending of the precast concrete plate and further reinforcing the shear misalignment are incorporated in the cotter recess formed in the precast concrete plate, and the grout is filled in the recess. It is assumed that.
【０００８】本発明によれば、プレキャストコンクリー
ト板を現場に搬入して建て込むだけでよいから、現場打
ちコンクリートを打設する必要がなく、騒音や振動の発
生がなく、移動間仕切り壁の施工と同様に乾式工法で施
工でき、既存建物への施工でも執務を妨げることはな
い。According to the present invention, since it is only necessary to carry in the precast concrete plate to the site and build it, there is no need to cast in-place concrete, there is no generation of noise and vibration, and the construction of the moving partition wall can be performed. Similarly, construction can be done by the dry method, and work will not be hindered even in the construction of existing buildings.
【０００９】しかも、プレキャストコンクリート板は、
壁筋を内蔵するプレキャスト鉄筋コンクリート板であ
り、また、プレキャストコンクリート板に設けたコッタ
ー用凹部内に配設する鉄筋は当該補強壁と建物躯体との
結合を行うだけでなく曲げ補強、せん断ズレ補強となる
補強筋とすることで補強壁としては十分な強度が得られ
る。Moreover, the precast concrete plate is
It is a precast reinforced concrete plate with built-in wall reinforcement, and the reinforcement placed in the cotter recess provided in the precast concrete plate not only connects the reinforcing wall with the building frame but also bends and shears reinforcement. Sufficient strength as a reinforcing wall can be obtained by using a reinforcing bar having such a shape.
【００１０】[0010]
【発明の実施の形態】以下、図面について本発明の実施
の形態を詳細に説明する。図１は本発明の建物の耐震補
強工法が実施される補強壁の横断平面図、図２は、補強
壁を構成するプレキャストコンクリート板の横断平面
図、図３は同上縦断正面図で、まず、プレキャストコン
クリート板１の構成から説明すると、比重 1.0〜1.5 程
度の軽量コンクリートを使用するもので、これを人力で
運搬、その他の作業が容易にできる程度の大きさに分割
した板体とする。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional plan view of a reinforcing wall on which a seismic retrofitting method for a building of the present invention is performed, FIG. 2 is a cross-sectional plan view of a precast concrete plate constituting a reinforcing wall, and FIG. Explaining the structure of the precast concrete plate 1, a lightweight concrete having a specific gravity of about 1.0 to 1.5 is used, which is divided into a plate body having a size such that it can be transported manually and other operations can be easily performed.
【００１１】本実施形態では該プレキャストコンクリー
ト板１は剪断補強筋である壁筋２を内蔵し、また、接合
面１ａ側にコッター用凹部３を縦方向に伸びるように形
成した。In the present embodiment, the precast concrete plate 1 has a built-in wall reinforcement 2 serving as a shear reinforcing bar, and a cotter recess 3 is formed on the joint surface 1a side so as to extend in the vertical direction.
【００１２】このプレキャストコンクリート板１は図４
に示すようにして建物骨組である柱６や梁７間に建て込
むが、その際、図１に示すように２枚のプレキャストコ
ンクリート板１を接合面１ａ同士を合わせて重ね合わ
せ、接着剤５で接着、あるいは面外方向からボルトで緊
結して一体化して補強壁10を構成する。This precast concrete plate 1 is shown in FIG.
In this case, two precast concrete plates 1 are overlapped with the joining surfaces 1a together as shown in FIG. To form a reinforcing wall 10 by bonding or by being bolted together from an out-of-plane direction.
【００１３】この状態で相互のプレキャストコンクリー
ト板１はコッター用凹部３が合わさって孔となるが、こ
のコッター用凹部３内には建物躯体である梁７や床スラ
ブ８もしくは柱６との結合を行う鉄筋４を内蔵させ、か
つこのコッター用凹部３内に高強度グラウトモルタルな
どによるグラウト材９を充填した。In this state, the precast concrete plates 1 are combined with the cotter recesses 3 to form holes. The cotter recesses 3 are connected to the beams 7, floor slabs 8 or columns 6 which are the building frame. The rebar 4 to be performed was built in, and the grout material 9 such as a high-strength grout mortar was filled in the cotter recess 3.
【００１４】前記鉄筋４は柱６、梁７、床スラブ８に後
施工アンカーを打ち込み、これに接続するアンカー筋で
あり、また、プレキャストコンクリート板１の曲げ補
強、さらには剪断ズレ補強となる補強筋としての役割を
担う。The reinforcing bar 4 is an anchor bar for driving a post-installed anchor into the column 6, the beam 7, and the floor slab 8 and connecting the post-installed anchor to the column 6, the beam 7, and the floor slab 8. Play a role as a muscle.
【００１５】プレキャストコンクリート板１を複数枚張
り合わせて形成した補強壁10はこれを複数個並べて骨組
である柱６・梁７間、または床スラブ８と梁７との間に
建て込むが、最後に、図４にも示すように柱６、梁７、
床スラブ８などの隙間にも高強度グラウトモルタルなど
によるグラウト材９を充填して耐震補強壁を構築する。A plurality of reinforcing walls 10 formed by laminating a plurality of precast concrete plates 1 are laid side by side, and are erected between the columns 6 and the beams 7 or between the floor slabs 8 and the beams 7. , As shown in FIG.
The space between the floor slabs 8 and the like is filled with a grout material 9 of a high-strength grout mortar or the like to construct an earthquake-resistant reinforcing wall.
【００１６】なお、プレキャストコンクリート板１相互
の接合の方法と板の幅を選択することにより、複数並ぶ
補強壁10は公知のスリット式耐震壁（特公昭45-24104号
公報、特公昭48-11135号公報）のように補強部材の剛性
を任意に変化させられるダクタイル壁とすることも可能
である。By selecting the method of joining the precast concrete plates 1 to each other and selecting the width of the plates, a plurality of reinforcing walls 10 arranged in a line can be formed by a known slit type earthquake-resistant wall (Japanese Patent Publication No. 45-24104, Japanese Patent Publication No. 48-11135). Japanese Patent Application Laid-Open Publication No. HEI 9-205), it is also possible to use a ductile wall in which the rigidity of the reinforcing member can be arbitrarily changed.
【００１７】また、他の実施形態として図５に示すよう
に、補強壁10はこれを袖壁として施工することもでき
る。As another embodiment, as shown in FIG. 5, the reinforcing wall 10 can be constructed as a sleeve wall.
【００１８】[0018]
【発明の効果】以上述べたように本発明の建物の耐震補
強工法は、人力で運べる程度に分割したプレキャストコ
ンクリート板を現場に搬入して建て込むだけでよいか
ら、現場打ちコンクリートを打設する必要がなく、騒音
や振動の発生がなく、移動間仕切り壁の施工と同様に乾
式工法で施工でき、建物内で大型の作業用機械などを必
要とせずに、簡単かつ迅速に施工できるものである。As described above, the seismic retrofitting method of a building according to the present invention requires only that a precast concrete plate divided enough to be transported manually can be carried into the site and built into the site. There is no need, there is no noise or vibration, and it can be installed by the dry method like the construction of moving partition walls, and it can be done easily and quickly without the need for large work machines etc. in the building .
【００１９】さらに、既存建物への施工では、大きな作
業空間も不要で、騒音や振動も発生せず、執務状態のま
ま補強作業ができるものである。Further, in the construction of an existing building, a large work space is not required, no noise or vibration is generated, and the reinforcement work can be performed in the working state.
【００２０】また、プレキャストコンクリート板は、剪
断補強筋である壁筋を内蔵し、それに加えて、プレキャ
ストコンクリート板に設けたコッター用凹部で建物躯体
との結合を行う鉄筋を挟み込み、この鉄筋を曲げ補強、
せん断ズレ補強となる補強筋とすることで、十分な強度
が得られるものである。Further, the precast concrete plate has a built-in wall reinforcing bar serving as a shear reinforcing bar. In addition to this, a reinforcing bar for connecting to a building frame is sandwiched by a cotter recess provided in the precast concrete plate, and the reinforcing bar is bent. Reinforcement,
Sufficient strength can be obtained by using reinforcing bars that serve as shear displacement reinforcement.
【図１】本発明の既存建物の耐震補強工法が実施される
補強壁の横断平面図である。FIG. 1 is a cross-sectional plan view of a reinforcing wall on which an earthquake-resistant reinforcing method for an existing building of the present invention is performed.
【図２】補強壁を構成するプレキャストコンクリート板
の横断平面図である。FIG. 2 is a cross-sectional plan view of a precast concrete plate constituting a reinforcing wall.
【図３】補強壁を構成するプレキャストコンクリート板
の縦断正面図である。FIG. 3 is a vertical sectional front view of a precast concrete plate constituting a reinforcing wall.
【図４】本発明の既存建物の耐震補強工法の１実施形態
を示す正面図である。FIG. 4 is a front view showing an embodiment of the seismic retrofitting method for an existing building of the present invention.
【図５】本発明の既存建物の耐震補強工法の他の実施形
態を示す正面図である。FIG. 5 is a front view showing another embodiment of the seismic retrofitting method for an existing building of the present invention.
１…プレキャストコンクリート板 １ａ…接合面 ２…壁筋 ３…コッター用凹部 ４…鉄筋 ５…接着剤 ６…柱 ７…梁 ８…床スラブ ９…グラウト材 10…補強壁 DESCRIPTION OF SYMBOLS 1 ... Precast concrete board 1a ... Joining surface 2 ... Wall reinforcement 3 ... Recess for cotter 4 ... Rebar 5 ... Adhesive 6 ... Column 7 ... Beam 8 ... Floor slab 9 ... Grout material 10 ... Reinforcement wall
フロントページの続き (72)発明者 小林 美亀雄 東京都調布市飛田給二丁目19番１号 鹿 島建設株式会社 技術研究所内 (72)発明者 中川 裕章 東京都調布市飛田給二丁目19番１号 鹿 島建設株式会社 技術研究所内 (72)発明者 山本 政▲ひろ▼ 東京都調布市飛田給二丁目19番１号 鹿 島建設株式会社 技術研究所内 (72)発明者 鈴木 隆志 東京都調布市飛田給二丁目19番１号 鹿 島建設株式会社 技術研究所内 (56)参考文献 特開 昭59−154269（ＪＰ，Ａ) 特開 昭53−84316（ＪＰ，Ａ) 特開 昭62−156461（ＪＰ，Ａ) 特開 昭58−11253（ＪＰ，Ａ) 特開 昭59−118948（ＪＰ，Ａ) 特開 平５−272187（ＪＰ，Ａ) 実開 昭53−119708（ＪＰ，Ｕ) 実開 昭64−46310（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) E04B 2/56 - 2/68 Continued on the front page. (72) Inventor Mikao Kobayashi 2-9-1-1, Tobita-Ki, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Hiroaki Nakagawa 2-1-1, Tobita-Ki-Chome, Chofu-shi, Tokyo Shika Kashima Construction Co., Ltd. (72) Inventor Takashi Suzuki Shibata Tobita Shibi, Tokyo Metropolitan Research Institute (72) No. 19-1 Kashima Corporation, Technical Research Institute (56) References JP-A-59-154269 (JP, A) JP-A-53-84316 (JP, A) JP-A-62-156461 (JP, A) JP-A-58-11253 (JP, A) JP-A-59-118948 (JP, A) JP-A-5-272187 (JP, A) Japanese Utility Model Application No. 53-119708 (JP, U) Japanese Utility Model Application No. 64-46310 (JP, U) (58) Field surveyed (Int. Cl. 6 , DB name) E04B 2/56-2/68
Claims (1)
割したものとして軽量コンクリートを用い、かつ、壁筋
を内蔵したプレキャストコンクリート板を建込むが、こ
のプレキャストコンクリート板は複数枚張り合わせて補
強壁を形成するように建込み、その際、建物躯体に打ち
込んだ後施工アンカーに接続するアンカー筋であり、ま
た、プレキャストコンクリート板の曲げ補強、さらには
剪断ズレ補強となる補強筋としての役割を担う鉄筋を前
記プレキャストコンクリート板に形成したコッター用凹
部内に内蔵させ、この凹部内にグラウト材を充填したこ
とを特徴とする建物の耐震補強工法。1. A precast concrete plate with light-wall concrete and a built-in wall streak is laid between frames of a building so that it can be carried by human power, and a plurality of such precast concrete plates are laminated and reinforced. It is an anchor bar that is built to form a wall and is connected to the construction anchor after being driven into the building frame, and also serves as a reinforcing bar that serves as bending reinforcement of precast concrete plates and further shear misalignment. A seismic retrofitting method for a building, characterized in that a reinforcing steel to be carried is built in a cotter recess formed in the precast concrete plate, and a grout material is filled in the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193103A JP2984727B2 (en) | 1995-07-28 | 1995-07-28 | Building seismic retrofitting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193103A JP2984727B2 (en) | 1995-07-28 | 1995-07-28 | Building seismic retrofitting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0941520A JPH0941520A (en) | 1997-02-10 |
| JP2984727B2 true JP2984727B2 (en) | 1999-11-29 |
Family
ID=16302296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7193103A Expired - Fee Related JP2984727B2 (en) | 1995-07-28 | 1995-07-28 | Building seismic retrofitting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2984727B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6351197B1 (en) * | 2017-03-24 | 2018-07-04 | 广州大学 | Damping wall using a kind of wall gap |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725475A (en) * | 2019-11-20 | 2020-01-24 | 中国建筑标准设计研究院有限公司 | Prefabricated column with built-in high-corrugated pipe, frame structure of prefabricated column and construction method of prefabricated column |
-
1995
- 1995-07-28 JP JP7193103A patent/JP2984727B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6351197B1 (en) * | 2017-03-24 | 2018-07-04 | 广州大学 | Damping wall using a kind of wall gap |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0941520A (en) | 1997-02-10 |
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