JPH046458Y2 - - Google Patents
Info
- Publication number
- JPH046458Y2 JPH046458Y2 JP1984057693U JP5769384U JPH046458Y2 JP H046458 Y2 JPH046458 Y2 JP H046458Y2 JP 1984057693 U JP1984057693 U JP 1984057693U JP 5769384 U JP5769384 U JP 5769384U JP H046458 Y2 JPH046458 Y2 JP H046458Y2
- Authority
- JP
- Japan
- Prior art keywords
- wall surface
- head
- existing concrete
- anchors
- anchor
- 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
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 230000008719 thickening Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は、既設コンクリート壁面を取り壊すこ
となく、その壁厚を増した壁の増厚構造に関す
る。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a wall thickening structure that increases the thickness of an existing concrete wall without demolishing it.
近年、国内において、強度の地震により、構築
物のコンクリート壁面が破壊される事故が発生し
た。これは既設コンクリート壁面が、それを支持
する梁や柱ほど確固に構成されていないと共に、
その厚みが比較的薄いことに起因している。そこ
で、このような既設コンクリートの壁の厚みを増
す必要性が生じてきた。このような場合、従来の
方法によれば、梁や柱以外の壁面を取り壊し、そ
こに新たな壁面を構築することにより目的を達す
ることになる。ところが、このような方法では、
既設コンクリート壁面の破壊作業に多くの時間と
労力を要すると共に、工事中その構築物の使用が
不能となる欠点を有さらに、実開昭55−22444号
公報記載の耐震性を有する改修躯体構造は、既設
コンクリートの壁面にアンカーを打ち込み、その
アンカーの長手方向一端面にネジ穴を形成してお
き、そのネジ穴に鉄筋の端部を螺着させ、鉄筋と
アンカーとを一体化する。そして、新壁の平面に
沿つて鉄筋を配設し、それらにコンクリートを打
ち込んでアンカー及び鉄筋を埋設することによ
り、壁の増厚構造を形成する提案が、本出願人自
身からなられていた。
In recent years, there have been accidents in Japan where concrete walls of structures were destroyed due to strong earthquakes. This is because the existing concrete wall is not as solidly constructed as the beams and columns that support it, and
This is due to its relatively thin thickness. Therefore, it has become necessary to increase the thickness of such existing concrete walls. In such a case, according to the conventional method, the purpose is achieved by demolishing the wall other than the beams and columns and constructing a new wall in its place. However, with this kind of method,
In addition to requiring a lot of time and effort to demolish the existing concrete wall, the structure also has the disadvantage that it becomes impossible to use the structure during construction. An anchor is driven into an existing concrete wall, a screw hole is formed in one end surface in the longitudinal direction of the anchor, and the end of the reinforcing bar is screwed into the screw hole to integrate the reinforcing bar and the anchor. The applicant himself proposed to form a wall thickening structure by arranging reinforcing bars along the plane of the new wall, pouring concrete into them, and burying anchors and reinforcing bars. .
ところがこの提案は、多数のアンカーに多数の
鉄筋の端部を螺着させる作業が面倒な欠点があつ
た。 However, this proposal had the drawback that the work of screwing the ends of a large number of reinforcing bars onto a large number of anchors was troublesome.
そこで、本考案は既設のコンクリート壁を破壊
することなく、既設コンクリート壁にアンカーを
打ち込むと共に、そのアンカーに鉄筋を容易に固
定することができる構造で、且つ該既設コンクリ
ート壁と強固に一体化された新設壁面６を提供す
ることを目的とし、その要旨とするところは次の
通りである。
Therefore, the present invention has a structure that allows anchors to be driven into an existing concrete wall and to easily fix reinforcing bars to the anchors without destroying the existing concrete wall, and which is firmly integrated with the existing concrete wall. The purpose is to provide a newly installed wall surface 6, and its gist is as follows.
即ち、フランジ状の頭部２を有する多数のアン
カー３が既設コンクリート壁面１に植設される。
そして、アンカー３の頭部２の半径方向突出幅よ
り小さい半径を有する鉄筋５がバインド線４の固
定手段により複数のアンカー３の軸部に夫々固定
されて、該鉄筋５が頭部２の壁面１側端面に接触
又は近接して既設コンクリート壁に平行に配置さ
れ、それらが埋設されるように、新設壁面６が打
ち込まれたことを特徴とする。 That is, a large number of anchors 3 having flange-shaped heads 2 are planted in the existing concrete wall surface 1.
Then, reinforcing bars 5 having a radius smaller than the radial protrusion width of the head 2 of the anchor 3 are fixed to the shaft portions of the plurality of anchors 3 by the fixing means of the binding wire 4, and the reinforcing bars 5 are attached to the wall surface of the head 2. It is characterized in that the new wall surface 6 is placed parallel to the existing concrete wall in contact with or in close proximity to the first side end surface, and is placed so that it is buried therein.
従つて、本構造によれば鉄筋５の半径が、アン
カー３の頭部２の突出幅より小さいため、鉄筋が
アンカーの頭部から脱落することなく確実に係止
され、両者間の固定が容易であり、バインド線等
による固定作業が迅速に行われる。特に、多数の
アンカー３に鉄筋を固定する作業の作業時間を著
しく短くすることが可能となる。係る状態で、そ
れらが埋設されるように打ち込まれた新設壁面
は、あたかもアンカーのフランジ部が大きくなつ
たのと同様の構造となり、新設壁面と既設コンク
リート壁面とが強固に一体化される。 Therefore, according to this structure, since the radius of the reinforcing bar 5 is smaller than the protruding width of the head 2 of the anchor 3, the reinforcing bar is securely locked without falling off from the head of the anchor, and the fixing between the two is facilitated. Therefore, the fixing work using binding wires etc. can be carried out quickly. In particular, it becomes possible to significantly shorten the working time for fixing reinforcing bars to a large number of anchors 3. In such a state, the new wall surface into which they are buried will have a structure similar to that of an enlarged flange of an anchor, and the new wall surface and the existing concrete wall surface will be firmly integrated.
即ち、地震等により新壁が既設コンクリートか
ら剥離する方向に外力が働いた場合には、その外
力に対してアンカーの頭部のみならず、その頭部
と一体化された鉄筋に応力が均一に分散される。
そのため、信頼性の高い増厚構造となる。 In other words, if an external force acts in a direction that causes a new wall to separate from the existing concrete due to an earthquake, etc., stress will be applied evenly to not only the head of the anchor but also the reinforcing steel that is integrated with the head of the anchor. distributed.
This results in a highly reliable thickened structure.
次ぎに図面に基づいて本考案の一実施例につき
説明する。
Next, one embodiment of the present invention will be described based on the drawings.
第１図は本構造の縦断面略図を示し、第２図は
新設壁面打ち込み前の本考案の要部を示す。そし
て、第３図は第２図の−断面拡大図である。 Fig. 1 shows a schematic vertical cross-sectional view of the present structure, and Fig. 2 shows the main parts of the present invention before the new wall is installed. FIG. 3 is an enlarged cross-sectional view of FIG. 2.
本実施例では、先ず上梁１０、下梁１１及び図
示しない左右の柱に夫々彫り込みアンカー８が植
設される。そして、この彫り込みアンカー８の端
部内面に形成された螺着部に異形の鉄筋１３の端
部が螺着される。このとき、実施例では上梁１０
に沿つてグラウト材９が打ち込まれる。それと共
に、第１図及び第２図に示すようなフランジ状の
頭部２を有するアンカー３が既設コンクリート壁
面１に互いに離間して多数植設される。このアン
カー３は壁面１の中ほどまで予め穿設された孔に
挿入され、プラグ７を介して該壁面１に咬着され
る。次ぎに、アンカー３のフランジ状の頭部２の
半径方向突出幅より小さい半径の鉄筋５が第２図
及び第３図の如くバインド線４により締結され
る。それと共に、この鉄筋５に交差して鉄筋１２
がバインド線４により締結される。なお、バイン
ド線の４の代わりの他の締結具を用いたり、溶接
等の固着手段を用いてもよい。次ぎに、このよう
な状態で、新設壁面６を構成するための型枠を組
み、この型枠と既設コンクリート壁面１との間に
コンクリートを打ち込んで、新設壁面６を構成さ
せる。 In this embodiment, the carved anchors 8 are first planted in the upper beam 10, the lower beam 11, and the left and right pillars (not shown), respectively. Then, the end of the irregularly shaped reinforcing bar 13 is screwed into the threaded portion formed on the inner surface of the end of the carved anchor 8. At this time, in the embodiment, the upper beam 10
Grout material 9 is poured along. At the same time, a large number of anchors 3 having flange-shaped heads 2 as shown in FIGS. 1 and 2 are planted on the existing concrete wall surface 1 at a distance from each other. This anchor 3 is inserted into a hole drilled in advance to the middle of the wall surface 1, and is engaged with the wall surface 1 via the plug 7. Next, a reinforcing bar 5 having a radius smaller than the radial protrusion width of the flange-shaped head 2 of the anchor 3 is fastened by the binding wire 4 as shown in FIGS. 2 and 3. At the same time, the reinforcing bar 12 intersects with this reinforcing bar 5.
are fastened by the binding wire 4. Note that other fasteners may be used in place of the bind wire 4, or fixing means such as welding may be used. Next, in this state, a formwork for forming the new wall surface 6 is assembled, and concrete is poured between the formwork and the existing concrete wall surface 1 to form the new wall surface 6.
以上の説明から明らかなように、本考案の壁の
増厚構造は次の構成からなる。
As is clear from the above description, the wall thickening structure of the present invention has the following configuration.
本考案は、植設された多数のアンカーの頭部の
既設コンクリート側端面に、鉄筋がそのコンクリ
ートに平行に位置される。この鉄筋５の半径は、
アンカーの頭部の半径方向の突出幅より小さく形
成されているから、鉄筋５を頭部の端面に確実に
係止して位置決めさせ、そこにバインド線等によ
り迅速に固定することが可能となる。 In the present invention, reinforcing bars are placed parallel to the existing concrete on the end faces of the heads of a large number of planted anchors on the existing concrete side. The radius of this reinforcing bar 5 is
Since it is formed to be smaller than the protrusion width in the radial direction of the head of the anchor, it is possible to securely engage and position the reinforcing bar 5 on the end face of the head, and quickly fix it there using a binding wire or the like. .
即ち、本構造は壁増厚作業の大部分をしめる鉄
筋とアンカーとの締結構造の組付けを極めて迅速
に行い且つ、確実に固定し得る効果がある。そし
て、新壁によりそれらが埋設された後には、地震
等により新壁が剥離する方向に外力が加わつた場
合、その鉄筋とアンカーとが一体化されているた
め、アンカーの軸に加わる力は鉄筋により支持さ
れ、応力が分散する。従つて、アンカーの頭部に
応力が集中して、破壊されることを防止できる信
頼性の高い壁の増厚構造となり得る。 That is, this structure has the effect of extremely quickly assembling the fastening structure between reinforcing bars and anchors, which is a major part of wall thickening work, and also being able to securely fix the structure. After they are buried in the new wall, if an external force is applied in the direction of the new wall peeling off due to an earthquake, etc., the reinforcing bars and anchors are integrated, so the force applied to the axis of the anchor will not be applied to the reinforcing bars. support, and stress is dispersed. Therefore, it is possible to obtain a highly reliable thickened wall structure that can prevent stress from being concentrated on the head of the anchor and causing it to break.
第１図は本考案の構造の縦断面略図、第２図は
新設壁面打ち込み前の本構造の要部拡大図、第３
図は第２図の−矢視断面拡大図。
１……既設コンクリート壁面、２……フランジ
状の頭部、３……アンカー、４……バインド線、
５，１２，１３……鉄筋、６……新設壁面、７…
…プラグ、８……彫り込みアンカー、９……グラ
ウト材、１０……上梁、１１……下梁。
Figure 1 is a schematic vertical cross-sectional view of the structure of the present invention, Figure 2 is an enlarged view of the main parts of the structure before the new wall is installed, and Figure 3 is a schematic diagram of the structure of the present invention.
The figure is an enlarged cross-sectional view taken along the - arrow in FIG. 1... Existing concrete wall surface, 2... Flange-shaped head, 3... Anchor, 4... Binding line,
5, 12, 13...Reinforcing bars, 6...New wall surface, 7...
...Plug, 8... Carved anchor, 9... Grout material, 10... Upper beam, 11... Lower beam.
Claims (1)
ンジ状の頭部２を有するアンカー３と、該頭部２
の半径方向突出幅より小なる半径を有し、該頭部
２の前記壁面１側端面に接触又は近接して既設コ
ンクリート壁に平行に配置され、バインド線４等
の固定手段により複数の前記アンカー３の軸部に
夫々固定された新壁面用の鉄筋５と、それらが埋
設されて打ち込まれた新設壁面６と、を具備する
壁の増厚構造。 A large number of anchors 3 are installed on an existing concrete wall surface 1 and have a flange-shaped head 2, and the head 2
has a radius smaller than the radial protrusion width of the head 2, and is arranged parallel to the existing concrete wall in contact with or in close proximity to the end surface of the head 2 on the side of the wall surface 1, and is connected to a plurality of the anchors by a fixing means such as a binding wire 4. A wall thickening structure comprising reinforcing bars 5 for a new wall surface fixed to the shaft parts of 3, respectively, and a new wall surface 6 in which the reinforcing bars 5 are buried and driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5769384U JPS60168716U (en) | 1984-04-18 | 1984-04-18 | Wall thickening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5769384U JPS60168716U (en) | 1984-04-18 | 1984-04-18 | Wall thickening structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60168716U JPS60168716U (en) | 1985-11-08 |
| JPH046458Y2 true JPH046458Y2 (en) | 1992-02-21 |
Family
ID=30582460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5769384U Granted JPS60168716U (en) | 1984-04-18 | 1984-04-18 | Wall thickening structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60168716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009228301A (en) * | 2008-03-24 | 2009-10-08 | Maeda Corp | Elongation method for bridge pier |
| JP2012144918A (en) * | 2011-01-13 | 2012-08-02 | Railway Technical Research Institute | Construction method for replacing railway viaduct column |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2914183B2 (en) * | 1994-08-04 | 1999-06-28 | 鹿島建設株式会社 | Thickening reinforcement method of existing earthquake-resistant wall |
| US7180080B2 (en) * | 2002-02-20 | 2007-02-20 | Loma Linda University Medical Center | Method for retrofitting concrete structures |
| JP4639380B2 (en) * | 2005-06-22 | 2011-02-23 | 学校法人東京理科大学 | Reinforcement method for columns with sleeve walls |
| JP4472729B2 (en) * | 2007-06-19 | 2010-06-02 | 大成建設株式会社 | Reinforced structure |
| JP5780442B1 (en) * | 2014-12-05 | 2015-09-16 | 一般社団法人 レトロフィットジャパン協会 | Reinforcement structure of building |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5522444U (en) * | 1978-08-01 | 1980-02-13 |
-
1984
- 1984-04-18 JP JP5769384U patent/JPS60168716U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009228301A (en) * | 2008-03-24 | 2009-10-08 | Maeda Corp | Elongation method for bridge pier |
| JP2012144918A (en) * | 2011-01-13 | 2012-08-02 | Railway Technical Research Institute | Construction method for replacing railway viaduct column |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60168716U (en) | 1985-11-08 |
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