JPS6160971A - Arrangement of welding anchor of earthquake resistant wall of extended building - Google Patents
Arrangement of welding anchor of earthquake resistant wall of extended buildingInfo
- Publication number
- JPS6160971A JPS6160971A JP18179884A JP18179884A JPS6160971A JP S6160971 A JPS6160971 A JP S6160971A JP 18179884 A JP18179884 A JP 18179884A JP 18179884 A JP18179884 A JP 18179884A JP S6160971 A JPS6160971 A JP S6160971A
- Authority
- JP
- Japan
- Prior art keywords
- anchor
- concrete
- arrangement
- welding
- bored
- 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
Links
- 238000003466 welding Methods 0.000 title description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
くイ）発明の技術分野
この発明は、耐震構造（設計）を採っていない現存ＳＲ
Ｃ造建物に耐震補強の目的で増築されるｉｆ震壁の溶接
アンカー設置工法に関する。[Detailed Description of the Invention] B) Technical field of the invention This invention applies to existing SRs that do not have an earthquake-resistant structure (design).
This article relates to a welding anchor installation method for an IF shear wall that is added to a C-framed building for the purpose of seismic reinforcement.
（σ）技術の背景
耐震構造を採っていない現存ＳＲＣ造建物に耐震補強を
施す策として、耐震壁を増築する場合がある。このよう
な耐震壁はその鉄筋を現存ＳＲＣ造建物側に設置される
アンカーと接続することで現存ＳＲＣ造建物と構造的に
一体化される。前記アンカーにはコンクリート部分に設
置されるものと鉄骨フランジに設置されるものがある。(σ) Background of the technology As a measure to provide seismic reinforcement to existing SRC buildings that do not have an earthquake-resistant structure, earthquake-resistant walls may be added. Such a shear wall can be structurally integrated with an existing SRC building by connecting its reinforcing bars to anchors installed on the side of the existing SRC building. There are two types of anchors: those installed on concrete parts and those installed on steel flanges.
コンクリート部分に設置されるアンカーには、第９図に
示す彫込みアンカーａと第１０図に示すケミカルアンカ
ーｂがある。また、第１１図は鉄骨フランジＣに設置さ
れるｆ６接アンカーｄを示している。Anchors installed in concrete parts include carved anchors a shown in FIG. 9 and chemical anchors b shown in FIG. 10. Moreover, FIG. 11 shows the f6 contact anchor d installed on the steel frame flange C.
（ハ）従来技術と問題点
ところで、上記彫込みアンカーａやケミカルアンカーｂ
の場合では、既設のコンクリートｅ部分に設置されるた
め、アンカー強度はコンクリートｅの強度に影響される
。従って、施工の際にはコンクリートｅの品質、性状等
を十分に調査しておかねばならない。仮にコンクリート
ｅが所定の強度を存していない場合゛や、仕上材を除去
した後にひびわれ、ジャンカ等が発見された場合には補
修をせねばならない。また、そのために予定していたア
ンカーを使えなくなることもある。(c) Conventional technology and problems By the way, the above-mentioned carved anchor a and chemical anchor b
In the case of , the anchor strength is affected by the strength of the concrete e because it is installed in the existing concrete e section. Therefore, the quality, properties, etc. of concrete e must be thoroughly investigated during construction. If the concrete does not have the specified strength, or if cracks, junks, etc. are found after the finishing material is removed, repairs must be made. Also, for this reason, you may not be able to use the anchor you had planned.
一方、鉄骨フランジＣに設置される溶接アンカ−ｄの場
合では上記彫込みアンカーａやケミカルアンカーｂの如
き問題はないが、コンクリートｅによって被覆し得ない
部分が生じ、そのために耐食性が低下し、所定の耐震強
度が得られなくなる慣れがあった。すなわち、アンカー
ｄ）ｆ：鉄骨フランジＣに溶接するには、コンクリート
ｅの所定部分を鉄骨フランジＣの外表面が露出するよう
に折り除く必要がある。このようにして形成されたアン
カ一孔「は従来、アンカーｄを溶接後そのままの状態と
されて耐震壁のコンクリートｇが打設されるので、図示
のようにアンカ一孔ｆ内にはコンク’Ｊ −） ｇが充
填され難く、空隙りが残ったままとされる。従って、空
隙り部分においてはアンカーｄは被覆されず、酸化環境
下にある。コンクリートｇの打設前、空隙りを形成しな
いようにアンカ一孔ｆにモルタルを充填することが考え
られるが、このような場合、モルタルの充瞑に相当の手
間がかかる上、モルタルの乾燥収縮やダレ等があり、好
ましい解決策にはならない、第１２図は柱壁側に設置さ
れる溶接アンカーｄを示しており、この場合も同様の問
題が生ずる。On the other hand, in the case of welded anchor d installed on steel flange C, there is no problem like the above-mentioned carved anchor a or chemical anchor b, but there are parts that cannot be covered with concrete e, which reduces corrosion resistance. There was a habit of not being able to obtain the required seismic strength. That is, in order to weld anchor d) f to the steel flange C, it is necessary to break off a predetermined portion of the concrete e so that the outer surface of the steel flange C is exposed. Conventionally, the anchor hole `` formed in this way is left as it is after the anchor d is welded, and the concrete g of the shear wall is poured. J-) g is difficult to fill, leaving a void.Therefore, the anchor d is not covered in the void and is under an oxidizing environment.Before pouring concrete g, the void is formed. It is conceivable to fill the anchor hole f with mortar to prevent this from happening, but in such a case, it takes a considerable amount of time to fill the mortar, and the mortar may dry and shrink or sag, so the preferred solution is Figure 12 shows a welding anchor d installed on the column wall side, and the same problem occurs in this case as well.
仁）発明の目的
そこでこの発明は、上述の如き事情に鑑み、空隙部分を
形成せずに確実に被覆される溶接アンカー設置工法を提
供するものである。Object of the Invention In view of the above-mentioned circumstances, the present invention provides a welding anchor installation method that reliably covers the welding anchor without forming any voids.
け）発明の構成
この発明では上記目的を達成するため、現存ＳＲＣ造建
物の所定コンクリート部分を鉄骨フランジの外表面が露
出するようにコアドリルでボーリングし、該ボーリング
部の鉄骨フランジにアンカーを溶接した後、ボーリング
部をコンクリートと同程度の圧縮強度を有している成形
コアで埋めるようにした。K) Structure of the Invention In order to achieve the above object, this invention uses a core drill to bore a predetermined concrete part of an existing SRC building so that the outer surface of the steel flange is exposed, and welds an anchor to the steel flange of the bored part. Afterwards, the bored part was filled with a molded core that has a compressive strength comparable to that of concrete.
（へ）発明の実施例
以下、この発明を実施態様を示す第１図〜第５図に基づ
き具体的に説明する。(F) Embodiments of the Invention The present invention will be specifically described below with reference to FIGS. 1 to 5 showing embodiments.
図において、１は現存ＳＲＣ造建物の梁のコンクリート
部分、２はアンカー３によって前記梁のコンクリート１
部分と構造的に一体とされた増築耐震壁である。In the figure, 1 is the concrete part of the beam of the existing SRC building, and 2 is the concrete part of the beam by the anchor 3.
This is an additional shear wall that is structurally integrated with the other parts.
前記アンカー３を鉄骨フランジ４に溶接設置する場合、
先ず、第２図に示すようにコンクリート１の所定部分を
コアドリルによって鉄骨フランジの外表面５が露出する
ようにボーリング（６）すると共にガン式ワイヤブラシ
によって外表面５をクリーニングする０次に、第３図に
示すように鉄骨フランジ４にスタンド溶接又は抵抗溶接
によってアンカー３を溶接する。しかる後、第４図及び
第５図に示すようにボーリング部６に第６図のストレー
ト形または第７図の５−ン形の成形コア７を埋め込んで
ボーリング部６を閉塞する。成形コア７は軸心に貫通孔
８が穿設されており、その貫通孔８をアンカー３に下端
から通してボーリング部６に圧入嵌合する。この場合、
成形コア７の内端９．外周面１０及び貫通孔８には早強
性のモルタル１１が塗布されてボーリング部６内に空隙
が形成しないようにされる。このようにしてボーリング
部６を成形コア７で閉塞した後、従来と同様に増築耐震
壁２の鉄筋１２をアンカー３に接続して第１図のように
コンクリート１３を打設する。When installing the anchor 3 on the steel flange 4 by welding,
First, as shown in FIG. 2, a predetermined portion of the concrete 1 is bored (6) with a core drill so that the outer surface 5 of the steel flange is exposed, and the outer surface 5 is cleaned with a gun-type wire brush. As shown in FIG. 3, the anchor 3 is welded to the steel flange 4 by stand welding or resistance welding. Thereafter, as shown in FIGS. 4 and 5, a straight molding core 7 as shown in FIG. 6 or a five-cornered molding core 7 as shown in FIG. 7 is embedded in the boring portion 6 to close the boring portion 6. The molded core 7 has a through hole 8 bored in its axis, and the anchor 3 is passed through the through hole 8 from the lower end and press-fitted into the boring part 6. in this case,
Inner end 9 of molded core 7. An early-strengthening mortar 11 is applied to the outer circumferential surface 10 and the through hole 8 to prevent the formation of voids within the boring portion 6. After the boring portion 6 is closed with the molded core 7 in this manner, the reinforcing bars 12 of the additional shear wall 2 are connected to the anchors 3, and concrete 13 is poured as shown in FIG. 1, as in the conventional case.
コンクリート１３の打設は梁のコンクリート１部分の下
端１４まで行なえないので、コンクリート１３の上端１
５と前記下端１４の間の隙間にはグラウト材１６が充填
される。なお、ボーリング部６に埋め込まれた成形コア
７は貫通孔８部分に打ち込まれる楔１７によって固定さ
れる。Since the concrete 13 cannot be placed up to the lower end 14 of the concrete 1 section of the beam, the upper end 1 of the concrete 13 cannot be placed.
5 and the lower end 14 is filled with grout material 16. The molded core 7 embedded in the boring portion 6 is fixed by a wedge 17 driven into the through hole 8 portion.
前記成形コア７は、コンクリート１と同程度の圧縮強度
を有し、不燃性のものであることが好ましく、このため
、通常はセメント系材料１例えばモルタルにて構成され
る。また、成形コア７は第８図に示すような複数の分割
片１８によって構成されることもある。The molded core 7 preferably has a compressive strength comparable to that of the concrete 1 and is noncombustible, and is therefore usually made of a cement material 1, such as mortar. Furthermore, the molding core 7 may be composed of a plurality of divided pieces 18 as shown in FIG.
（ト）発明の効果
以上要するに、この発明に係る増築耐震壁の溶接アンカ
ー設置工法では現存ＳＲＣ造建物の所定コンクリート部
分を鉄骨７ランジの外表面が露出するようにコアドリル
でボーリングし、該ボーリング部の鉄骨フランジにアン
カーを溶接した後、ボーリング部をコンクリートと同程
度の圧縮強度を有している成形コアで埋めるようにする
ので、その成形コアによってボーリング部内に空隙が形
成されることなく溶接アンカーを完全に被覆することが
可能となる。従って、従来のように溶接アンカーの耐食
性が低下し、それにより耐震強度が得られなくなると云
ったことがなくなる。(G) Effects of the Invention In short, in the welding anchor installation method for an extension shear wall according to the present invention, a predetermined concrete part of an existing SRC building is bored with a core drill so that the outer surface of the seven steel frame rungs is exposed. After welding the anchor to the steel flange of the steel frame, the bored part is filled with a molded core that has a compressive strength comparable to that of concrete. can be completely covered. Therefore, there is no longer a problem that the corrosion resistance of the welded anchor deteriorates and seismic strength cannot be obtained as in the conventional case.
第１図〜第５図は夫々この発明の実施態様を示す断面図
、第６図及び第７図は夫々同成形コアの斜視図、第８図
は同成形コアの変形構造を示す平面図、第９図は彫込み
アンカーを示す断面図、第１０図はケミカルアンカーを
示す断面図、第１１図及び第１２図は夫々従来の溶接ア
ンカーを示す断面図である。
図において、１は現存ＳＲＣ造建物の梁のコンクリート
部分、２は増築耐震壁、３は溶接アンカー、４は鉄骨フ
ランジ、５は鉄骨フランジの外表面、６はボーリング部
、７は成形コア、１２は鉄筋、１３はコンクリートであ
る。FIGS. 1 to 5 are sectional views showing embodiments of the present invention, FIGS. 6 and 7 are perspective views of the molded core, and FIG. 8 is a plan view showing a deformed structure of the molded core. FIG. 9 is a sectional view showing a carved anchor, FIG. 10 is a sectional view showing a chemical anchor, and FIGS. 11 and 12 are sectional views showing a conventional welding anchor. In the figure, 1 is the concrete part of the beam of the existing SRC building, 2 is the added shear wall, 3 is the welding anchor, 4 is the steel flange, 5 is the outer surface of the steel flange, 6 is the boring part, 7 is the formed core, 12 is reinforced steel, and 13 is concrete.
Claims (1)
ジの外表面が露出するようにコアドリルでボーリングし
、該ボーリング部の鉄骨フランジにアンカーを溶接した
後、ボーリング部をコンクリートと同程度の圧縮強度を
有している成形コアで埋めることを特徴とする増築耐震
壁の溶接アンカー設置工法。A predetermined concrete part of an existing SRC building is bored with a core drill so that the outer surface of the steel flange is exposed, and an anchor is welded to the steel flange in the bored part, and then the bored part is made to have a compressive strength comparable to that of concrete. This is a method for installing welded anchors for additional shear walls, which is characterized by filling them with molded cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18179884A JPS6160971A (en) | 1984-08-31 | 1984-08-31 | Arrangement of welding anchor of earthquake resistant wall of extended building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18179884A JPS6160971A (en) | 1984-08-31 | 1984-08-31 | Arrangement of welding anchor of earthquake resistant wall of extended building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6160971A true JPS6160971A (en) | 1986-03-28 |
| JPH041832B2 JPH041832B2 (en) | 1992-01-14 |
Family
ID=16107041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18179884A Granted JPS6160971A (en) | 1984-08-31 | 1984-08-31 | Arrangement of welding anchor of earthquake resistant wall of extended building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6160971A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295496A (en) * | 2000-04-14 | 2001-10-26 | Takenaka Komuten Co Ltd | Structure and method of installing viscous seismic control wall onto existing src constructed beam |
| JP2001295478A (en) * | 2000-04-14 | 2001-10-26 | Takenaka Komuten Co Ltd | Connecting method for src constructed existing skeleton and repairing member |
| DE112016004651T5 (en) | 2016-01-05 | 2018-06-28 | Tokyo Seimitsu Co., Ltd. | ULTRASONIC SPACING SENSOR AND WORKPIECE IDENTIFIER CONTAINING THEM |
-
1984
- 1984-08-31 JP JP18179884A patent/JPS6160971A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295496A (en) * | 2000-04-14 | 2001-10-26 | Takenaka Komuten Co Ltd | Structure and method of installing viscous seismic control wall onto existing src constructed beam |
| JP2001295478A (en) * | 2000-04-14 | 2001-10-26 | Takenaka Komuten Co Ltd | Connecting method for src constructed existing skeleton and repairing member |
| DE112016004651T5 (en) | 2016-01-05 | 2018-06-28 | Tokyo Seimitsu Co., Ltd. | ULTRASONIC SPACING SENSOR AND WORKPIECE IDENTIFIER CONTAINING THEM |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH041832B2 (en) | 1992-01-14 |
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