JPH10311144A - Earthquake-resistant reinforcing method for existing building - Google Patents

Earthquake-resistant reinforcing method for existing building

Info

Publication number
JPH10311144A
JPH10311144A JP12064597A JP12064597A JPH10311144A JP H10311144 A JPH10311144 A JP H10311144A JP 12064597 A JP12064597 A JP 12064597A JP 12064597 A JP12064597 A JP 12064597A JP H10311144 A JPH10311144 A JP H10311144A
Authority
JP
Japan
Prior art keywords
existing
new
existing building
column
foundation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12064597A
Other languages
Japanese (ja)
Other versions
JP3130488B2 (en
Inventor
Hidehana Oomori
英華 大森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toda Corp
Original Assignee
Toda Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toda Corp filed Critical Toda Corp
Priority to JP09120645A priority Critical patent/JP3130488B2/en
Publication of JPH10311144A publication Critical patent/JPH10311144A/en
Application granted granted Critical
Publication of JP3130488B2 publication Critical patent/JP3130488B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Working Measures On Existing Buildindgs (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an earthquake-resistant reinforcing method that is effective in earthquake resistance for existing buildings. SOLUTION: A new foundation is constructed, being integral with an existing foundation 7, with a new pile driven for installation into a position near an existing column 8 of an existing building 1, column forms 12, being integral with the existing column 8, are formed at the new foundation, and a new beam 18 is installed in sliding, extending along an existing beam 19, at the top between the column forms 12. Then, with concrete cast into the inside of the column forms 12, a reinforcing rigid frame, being integral with the existing building 1, is constructed.

Description

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

【0001】[0001]

【発明の属する技術分野】本発明は既存建物の耐震補強
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 retrofitting existing buildings.

【0002】[0002]

【従来の技術】近年において、大地震に対応するため、
既存構築物や既存建物の耐震補強が数多く実施されてい
る。これは図12に示すように、既存建物の柱30など
に鋼板や特殊繊維などの補強材31を巻き付けてコンク
リートの増し打ち補強をしたり、あるいは壁32を新設
したりしていた。また新規に耐震補強をする場合は、免
震工法などが取り入れられている。
2. Description of the Related Art In recent years, in order to respond to a large earthquake,
Many seismic retrofits of existing structures and buildings have been implemented. In this method, as shown in FIG. 12, a reinforcing material 31 such as a steel plate or a special fiber is wound around a pillar 30 of an existing building to reinforce the concrete, or a new wall 32 is provided. In the case of new seismic retrofit, seismic isolation method is adopted.

【0003】[0003]

【発明が解決しようとする課題】しかし、上記のような
既存建物の耐震補強を行う場合は、生活者の居住空間に
入って工事を行うためプライバシーが保護されず、例え
ばマンションなどにおいては長期間の工事を行うことが
困難であった。また既存建物に免震工法を適用するに
は、工事がおおがかりとなるため経済的にも問題があっ
た。
However, in the case of the above-mentioned seismic reinforcement of an existing building, privacy is not protected because construction is performed in a living space of a consumer. Construction was difficult. In addition, applying the seismic isolation method to existing buildings was economically problematic because the construction would be expensive.

【0004】本発明は、このような問題に鑑みてなされ
たものであり、その目的は、居住者の日常生活や、通常
の業務に影響を与えずに、既存建物を耐震補強すること
である。
[0004] The present invention has been made in view of such a problem, and an object of the present invention is to provide an existing building with seismic reinforcement without affecting the resident's daily life and ordinary work. .

【0005】[0005]

【課題を解決するための手段】以上の課題を解決するた
めの本発明の既存建物の耐震補強工法は、既存建物にお
ける既存柱の近傍に新設杭を打設して既存基礎と一体の
新設基礎を構築し、該新設基礎に既存柱と一体の柱型枠
を形成し、該柱型枠間の頂部に、新設梁を既存梁に沿っ
てスライドさせて掛け渡した後、柱型枠内にコンクリー
トを打設して既存建物と一体の補強用のラーメン架構を
構築したことを特徴とする。
The seismic retrofitting method for an existing building according to the present invention for solving the above-mentioned problems is based on a method of placing a new pile near an existing pillar in an existing building to form a new foundation integrated with the existing foundation. To form a pillar formwork integral with the existing pillars on the new foundation, slide the new beam along the existing beam on the top between the pillar forms, and then hang it inside the pillar formwork. It is characterized by casting concrete and constructing a rigid frame for reinforcement that is integrated with the existing building.

【0006】既存建物の入居者に施工中の負担を強いる
ことなく、また居住空間への影響を与えることなく既存
建物の耐震補強が行えるとともに、耐震補強の効果を有
効なものとすることができる。
The seismic reinforcement of the existing building can be performed without imposing a burden on the resident of the existing building during construction and without affecting the living space, and the effect of the seismic reinforcement can be made effective. .

【0007】[0007]

【発明の実施の形態】以下、本発明の既存建物の耐震補
強工法の実施の形態を図面に基づいて詳細に説明する。
図1は既存建物の平面図、図2は耐震補強をした既存建
物の断面面である。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the seismic retrofitting method for an existing building according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view of an existing building, and FIG. 2 is a cross-sectional view of the existing building reinforced with earthquake resistance.

【0008】図1の既存建物1は、長さ方向の一方側に
バルコニー2、他方側に廊下3を備えた鉄筋コンクリー
トまたは鉄骨鉄筋コンクリート造の集合住宅であり、前
記バルコニー2側および廊下3側に十分な敷地、例えば
レッカーが移動できる程度の広さを備えている。
The existing building 1 shown in FIG. 1 is a reinforced concrete or steel reinforced concrete apartment house having a balcony 2 on one side in the length direction and a corridor 3 on the other side, and is sufficiently provided on the balcony 2 side and the corridor 3 side. The site is large enough to move wreckers, for example.

【0009】この既存建物1の既存杭4の近傍、すなわ
ちバルコニー2側および廊下3側に新設杭5を打設す
る。これは、図2および図3に示すように、バルコニー
2および廊下3に接する近さに打設するものであり、こ
の上に新設基礎6を既存基礎7と一体的に構築する。
A new pile 5 is cast near the existing pile 4 of the existing building 1, that is, on the balcony 2 side and the corridor 3 side. As shown in FIGS. 2 and 3, this is cast near the balcony 2 and the corridor 3, on which a new foundation 6 is integrally formed with an existing foundation 7.

【0010】次に、バルコニー2側および廊下3側の既
存柱8の外面の目荒しを行い、該外面にシアコネクター
筋9を取り付けるアンカー金具9aを埋設する。そして
既存柱8近傍のバルコニー2および廊下3に、新設柱5
を建て込むための貫通孔10を開ける。
Next, the outer surfaces of the existing columns 8 on the balcony 2 side and the corridor 3 side are roughened, and anchor metal fittings 9a for attaching the shear connector bars 9 are buried in the outer surfaces. The new pillar 5 is placed on the balcony 2 and the corridor 3 near the existing pillar 8.
A through hole 10 for embedding is formed.

【0011】次に、地組した柱鉄筋11を吊り上げて貫
入孔10に挿入して既存柱8に沿って建て込むと、その
上部が前記貫通孔10から突出した状態になる。そし
て、前記アンカー金具9aにシアコネクター筋9を取り
付けて柱鉄筋11に接合するとともに、該柱鉄筋11を
覆うようにして柱型枠12を建て込む。この柱型枠12
は図4に示すように、プレキャスト鉄筋コンクリートで
断面コ字形に形成され、上部に梁の挿入溝が13形成さ
れている。
Next, when the pillared reinforcing bar 11 is lifted up, inserted into the penetration hole 10 and built along the existing column 8, the upper part thereof protrudes from the penetration hole 10. Then, the shear connector bar 9 is attached to the anchor fitting 9a and joined to the column reinforcing bar 11, and the column form 12 is built so as to cover the column reinforcing bar 11. This pillar formwork 12
As shown in FIG. 4, is formed of precast reinforced concrete in a U-shaped cross section, and has an insertion groove 13 formed in the upper part.

【0012】次に、図6に示すように、鉄骨梁を仮設す
るための作業用構台14を組み立て、ここにおいて鉄骨
15を接合して所定の長さの鉄骨梁16を形成し、これ
をローラー14aに載せる。この接合はウエブをボルト
接合、フランジを溶接接合とする。この鉄骨梁16をウ
インチ17で少しづつ送りだして柱型枠12の挿入溝1
3に挿入することにより、柱型枠12間、すなわちバル
コニー2側と廊下3側との間に新設梁18が架設され
る。この送り出しは、鉄骨梁16がバルコニーの天井に
設けた吊りローラ14bで支持されて既存梁19に沿っ
て行われる。そして、この作業を下階から上階にかけて
順次繰り返すことにより、バルコニー2側および廊下3
側に補強用のラーメン架構20が構築される。
Next, as shown in FIG. 6, a work gantry 14 for temporarily installing a steel beam is assembled, and a steel frame 15 is joined here to form a steel beam 16 having a predetermined length. Place on 14a. In this joining, the web is joined by bolts and the flange is joined by welding. This steel beam 16 is fed little by little by a winch 17 to insert the groove 1 of the column formwork 12.
3, a new beam 18 is erected between the column forms 12, that is, between the balcony 2 side and the corridor 3 side. This delivery is performed along the existing beams 19 while the steel beams 16 are supported by suspension rollers 14 b provided on the ceiling of the balcony. Then, this work is repeated sequentially from the lower floor to the upper floor, so that the balcony 2 side and the corridor 3
A reinforcement frame 20 is constructed on the side.

【0013】そして、図7に示すように、柱型枠12の
挿入溝13を鉄骨梁16のスチフナー22と、側板23
とで塞いで柱型枠12内にコンクリートを打設する。こ
のことにより新設柱21と既存柱8とが一体となって、
バルコニー2側および廊下3側に既存建物1と一体の補
強用のラーメン架構20が完成する。
Then, as shown in FIG. 7, the insertion groove 13 of the column formwork 12 is inserted into the stiffener 22 of the steel beam 16 and the side plate 23.
And concrete is poured into the column formwork 12. As a result, the new pillar 21 and the existing pillar 8 are integrated,
On the side of the balcony 2 and the side of the corridor 3, a rigid frame 20 for reinforcement integrated with the existing building 1 is completed.

【0014】図8は、鉄骨梁16の剛性が足りない場合
に、これに代わるPC梁24の送り出しを示したもので
ある。この場合は吊りローラ14bが使用できないた
め、上部にローラー25aを設けた支持具25で支持し
ながら送り出しを行う。この支持具25は鉄骨梁16の
送り出しにも、もちろん使用することができる。
FIG. 8 shows an alternative delivery of the PC beam 24 when the rigidity of the steel beam 16 is insufficient. In this case, since the suspension roller 14b cannot be used, the feeding is performed while being supported by the support 25 provided with the roller 25a on the upper side. This support 25 can of course be used for sending out the steel beam 16.

【0015】また、作業環境によっては図9に示すよう
に、送り出し機構を備えたリフト車26やクレーン27
を用いて鉄骨梁16やPC梁24を既存建物1の前方か
ら設置するようにしてもよい。
Further, depending on the working environment, as shown in FIG. 9, a lift truck 26 and a crane 27 having a delivery mechanism are provided.
Alternatively, the steel beams 16 and the PC beams 24 may be installed from the front of the existing building 1 using.

【0016】小梁の補強が必要な場合は図10および図
11に示すように構築する。図10は小梁28を鉄筋コ
ンクリートで構築する場合を示したものであり、既存柱
8におけるバルコニー2および廊下3に形成した切欠部
29に短辺方向の小梁鉄筋28aを、該小梁鉄筋28a
の先端部に長辺方向の小梁鉄筋28bをそれぞれ配筋し
て、バルコニー2および廊下3と一体的に構築するもの
である。また図11は小梁28を鉄筋コンクリートで構
築する場合を示したものであり、新設の鉄骨梁16に短
辺方向の鉄骨梁28aをボルト接合し、該鉄骨梁28a
に長辺方向の鉄骨梁28bを設け、これらの鉄骨梁28
a、28bとバルコニー2および廊下3とをスタッドボ
ルト等で一体的に接合するものである。これは小梁があ
る場合も、小梁を増設する場合も同様にし、小梁がある
場合は、この既存の小梁を一体とする。
When reinforcement of the small beam is required, the beam is constructed as shown in FIGS. FIG. 10 shows a case in which the small beam 28 is constructed of reinforced concrete. A short-side small beam reinforcing bar 28a is inserted into a notch 29 formed in the balcony 2 and the corridor 3 of the existing column 8, and the small beam reinforcing bar 28a is formed.
Are provided with small beam reinforcing bars 28b in the long side direction respectively at the tip end portions thereof to be integrally formed with the balcony 2 and the corridor 3. FIG. 11 shows a case in which the small beam 28 is constructed of reinforced concrete. A steel beam 28a in the short side direction is bolted to the newly installed steel beam 16, and the steel beam 28a is formed.
Are provided with steel beams 28b extending in the long side direction.
a, 28b and the balcony 2 and the corridor 3 are integrally joined by stud bolts or the like. The same applies to the case where there is a small beam and the case where a small beam is added. If there is a small beam, the existing small beam is integrated.

【0017】[0017]

【発明の効果】既存建物における既存柱の近傍に新設杭
を打設して既存基礎と一体の新設基礎を構築し、該新設
基礎に既存柱と一体の柱型枠を形成し、該柱型枠間の頂
部に、新設梁を既存梁に沿ってスライドさせて掛け渡し
た後、柱型枠内にコンクリートを打設して既存建物と一
体の補強用のラーメン架構を構築したことにより、既存
建物の入居者に施工中の負担を強いることなく、また居
住空間へ影響を与えることなく既存建物の耐震補強が行
えるとともに、耐震補強の効果を有効なものとすること
ができる。
According to the present invention, a new pile is cast near an existing pillar in an existing building to construct a new foundation integral with the existing foundation, and a column formwork integral with the existing pillar is formed on the new foundation. After sliding the new beam along the existing beam at the top between the frames, the concrete was poured into the column formwork to construct a rigid frame for reinforcement with the existing building. The seismic reinforcement of the existing building can be performed without imposing a burden on the occupants during the construction and without affecting the living space, and the effect of the seismic reinforcement can be made effective.

【0018】既存建物の耐震補強が短期間で施工でき、
かつ既存建物への免震施工に比べて経済的に行える。
The seismic retrofit of an existing building can be constructed in a short time,
And it is more economical than seismic isolation construction on existing buildings.

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

【図1】既存建物の平面図である。FIG. 1 is a plan view of an existing building.

【図2】耐震補強をした既存建物の断面図である。FIG. 2 is a cross-sectional view of an existing building with seismic reinforcement.

【図3】既存建物に新設杭を打設した概略図である。FIG. 3 is a schematic diagram in which a new pile is installed in an existing building.

【図4】(1)は既存柱に新設柱を構築する断面図、
(2)は柱型枠の側面図である。
FIG. 4 is a cross-sectional view of constructing a new pillar on an existing pillar,
(2) is a side view of the column formwork.

【図5】貫通孔を開けたバルコニーの断面図である。FIG. 5 is a sectional view of a balcony with a through hole.

【図6】(1)は新設梁を架設する状態の正面図、
(2)は吊りローラの側面図である。
FIG. 6 is a front view of a state where a new beam is erected,
(2) is a side view of the suspension roller.

【図7】新設梁を架設する状態の断面図である。FIG. 7 is a sectional view showing a state where a new beam is erected.

【図8】PC梁を架設する状態の正面図である。FIG. 8 is a front view of a state where a PC beam is erected.

【図9】既存建物に梁架設の方法を示す側面図である。FIG. 9 is a side view showing a method of erection of a beam in an existing building.

【図10】(1)は小梁を設けた断面図、(2)は同平
面図である。
10A is a cross-sectional view in which a small beam is provided, and FIG. 10B is a plan view thereof.

【図11】小梁を鉄骨とした斜視図である。FIG. 11 is a perspective view of a small beam made of steel.

【図12】(1)および(2)は従来の耐震補強構造の
断面図である。
FIGS. 12 (1) and (2) are cross-sectional views of a conventional seismic retrofit structure.

【符号の説明】[Explanation of symbols]

1 既存建物 2 バルコニー 3 廊下 4 既存杭 5 新設杭 6 新設基礎 7 既存基礎 8 既存柱 12 柱型枠 18 新設梁 19 既存梁 20 補強用のラーメン架構 1 Existing Building 2 Balcony 3 Corridor 4 Existing Pile 5 New Pile 6 New Foundation 7 Existing Foundation 8 Existing Column 12 Column Formwork 18 New Beam 19 Existing Beam 20 Reinforcement Frame

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 既存建物における既存柱の近傍に新設杭
を打設して既存基礎と一体の新設基礎を構築し、該新設
基礎に既存柱と一体の柱型枠を形成し、該柱型枠間の頂
部に、新設梁を既存梁に沿ってスライドさせて掛け渡し
た後、柱型枠内にコンクリートを打設して既存建物と一
体の補強用のラーメン架構を構築したことを特徴とする
既存建物の耐震補強工法。
1. A new foundation is integrated with an existing foundation by driving a new pile near an existing pillar in an existing building, and a column formwork integral with the existing pillar is formed on the new foundation. After sliding the new beam along the existing beam on the top between the frames, the concrete was poured into the column formwork to construct a rigid frame for reinforcement with the existing building. To strengthen existing buildings.
JP09120645A 1997-05-12 1997-05-12 Seismic retrofitting of existing buildings Expired - Fee Related JP3130488B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09120645A JP3130488B2 (en) 1997-05-12 1997-05-12 Seismic retrofitting of existing buildings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09120645A JP3130488B2 (en) 1997-05-12 1997-05-12 Seismic retrofitting of existing buildings

Publications (2)

Publication Number Publication Date
JPH10311144A true JPH10311144A (en) 1998-11-24
JP3130488B2 JP3130488B2 (en) 2001-01-31

Family

ID=14791358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09120645A Expired - Fee Related JP3130488B2 (en) 1997-05-12 1997-05-12 Seismic retrofitting of existing buildings

Country Status (1)

Country Link
JP (1) JP3130488B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006291607A (en) * 2005-04-12 2006-10-26 Taisei Corp Foundation reinforcing method for existing structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006291607A (en) * 2005-04-12 2006-10-26 Taisei Corp Foundation reinforcing method for existing structure

Also Published As

Publication number Publication date
JP3130488B2 (en) 2001-01-31

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