JPH04238961A - Construction method for concrete wall body - Google Patents

Construction method for concrete wall body

Info

Publication number
JPH04238961A
JPH04238961A JP1306891A JP1306891A JPH04238961A JP H04238961 A JPH04238961 A JP H04238961A JP 1306891 A JP1306891 A JP 1306891A JP 1306891 A JP1306891 A JP 1306891A JP H04238961 A JPH04238961 A JP H04238961A
Authority
JP
Japan
Prior art keywords
stage
wall
wall surface
fixed
ratchet
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
JP1306891A
Other languages
Japanese (ja)
Other versions
JP2776031B2 (en
Inventor
Tsunenori Harada
恒則 原田
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.)
Obayashi Corp
Original Assignee
Obayashi 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 Obayashi Corp filed Critical Obayashi Corp
Priority to JP3013068A priority Critical patent/JP2776031B2/en
Publication of JPH04238961A publication Critical patent/JPH04238961A/en
Application granted granted Critical
Publication of JP2776031B2 publication Critical patent/JP2776031B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

PURPOSE:To perform high-efficient and safe repetition work wherein, with the progress of stepped building of a concrete wall body from below to above, a form stage is orderly lifted and fixed, to the given position of an existing wall body, and after a new wall body is built, the stage is further lifted to a given position and fixed. CONSTITUTION:During construction of wall bodies 1a and 1b, notch recessed parts 5a and 5b are formed in the given positions of a wall surface. A ratchet claw 6 is located to the side end part of a stage 3. The claw tip part of the ratchet claw 6 is protruded sideways and the ratchet claw is formed such that it is rotated downward but not rotted upward. When the stage 3 is lifted upward along the wall surface and the ratchet claw 6 is engaged with the notch recessed parts 5a and 5b, the whole of the stage 3 is securely supported to a wall surface through the engagement.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】この発明は、サイロ、地下駐車場
、煙突、橋脚などの中空構造物のコンクリート壁体を構
築する方法に関し、特に、コンクリート壁体を下方から
上方へと段階的に構築するにあたり型枠ステージを順次
上方へ引き上げて固定する技術の改良に関する。
[Industrial Application Field] This invention relates to a method for constructing concrete walls of hollow structures such as silos, underground parking lots, chimneys, and bridge piers, and in particular, a method for constructing concrete walls in stages from the bottom to the top. The present invention relates to improvements in technology for sequentially lifting and fixing formwork stages.

【0002】0002

【従来の技術】この種のコンクリート壁体の構築方法と
しては、特開昭64−52957号公報(E04G  
11/28)に示されている次のような方法が一般的で
ある。図3に示すように、コンクリート壁体を下方から
上方へと段階的に構築するにあたり、壁体の既設部分1
aの壁面の所定位置にブラケット2を取り付けておき、
チェーンブロック、ジャッキ等の揚重機(以下、チェー
ンブロック等という)で吊り下げた型枠ステージ3を既
設壁体1aのブラケット2aを支点として固定する。こ
のステージ3に設けた足場4を使って既設壁体1aの上
に新設する壁体1b用の型枠(図示省略)を設置し、そ
の新設壁体1bの施工後にステージ3を引き上げて、新
設壁体1bの壁面に設けたブラケット2bを支点として
ステージ3を固定する。
[Prior Art] A method for constructing this type of concrete wall is disclosed in Japanese Patent Application Laid-Open No. 64-52957 (E04G
The following method shown in 11/28) is common. As shown in Figure 3, when constructing a concrete wall in stages from the bottom to the top, the existing part of the wall 1
Attach the bracket 2 to a predetermined position on the wall of a.
The formwork stage 3 suspended by a lifting device such as a chain block or jack (hereinafter referred to as a chain block or the like) is fixed using the bracket 2a of the existing wall 1a as a fulcrum. A formwork (not shown) for the new wall 1b is installed on top of the existing wall 1a using the scaffolding 4 provided on this stage 3, and after the construction of the new wall 1b, stage 3 is raised and the new wall 1b is constructed. The stage 3 is fixed using a bracket 2b provided on the wall surface of the wall 1b as a fulcrum.

【0003】0003

【発明が解決しようとする課題】前記の従来工法におい
て、図3(B)に示すように、新設壁体1bの施工後に
ステージ3をブラケット2aで固定したままの状態で、
足場4を使って新たなブラケット2bを壁体1bに取り
付けるようにすれば、作業を安全に行なえるとともに作
業の流れがスムーズである。しかしブラケット2bを取
り付けてからステージ3を引き上げるのでは、ステージ
3がブラケット2bに引っ掛かるので、この作業手順は
取れない。
[Problems to be Solved by the Invention] In the conventional construction method described above, as shown in FIG.
If the new bracket 2b is attached to the wall 1b using the scaffold 4, the work can be done safely and the work flow will be smooth. However, if the stage 3 is pulled up after attaching the bracket 2b, the stage 3 will get caught on the bracket 2b, so this work procedure cannot be performed.

【0004】そこで図3(C)に示すように、ステージ
3をブラケット2bの設置位置より引き上げておき、そ
の状態でステージ3の下方において壁体1bにブラケッ
ト2bを取り付け、その後ステージ3を少し下降させて
ブラケット2b上に固定することになる。このため、チ
ェーンブロック等で吊り下げた状態のステージ3の下方
の吊下げ式の足場を使ってブラケット2bを壁面に取り
付けるのであるが、この作業には危険が伴うし能率もあ
まり良くない。
Therefore, as shown in FIG. 3(C), the stage 3 is raised from the installation position of the bracket 2b, the bracket 2b is attached to the wall 1b below the stage 3, and then the stage 3 is lowered a little. Then, it is fixed on the bracket 2b. For this reason, the bracket 2b is attached to the wall using a hanging scaffold below the stage 3, which is suspended from a chain block or the like, but this work is dangerous and not very efficient.

【0005】この発明は前述した従来の問題点に鑑みな
されたもので、その目的は、コンクリート壁体を下方か
ら上方へと段階的に構築するにあたり、工事の進行に伴
って型枠ステージを壁面に沿って引き上げて既設の壁体
を支点として固定するという繰返し作業を、安全にかつ
能率よく行えるようにしたコンクリート壁体の構築方法
を提供することにある。
[0005] This invention was made in view of the conventional problems mentioned above, and its purpose is to move the formwork stage to the wall surface as the construction progresses, when constructing a concrete wall in stages from the bottom to the top. To provide a method for constructing a concrete wall body which enables the repeated work of pulling up along the wall and fixing it using an existing wall body as a fulcrum safely and efficiently.

【0006】[0006]

【課題を解決するための手段】そこでこの発明では、前
記壁体の施工時に壁面の所定位置に欠き込み凹部を形成
しておき、側方に突出した爪先部分が下方に回動し上方
には回動しない構成のラチェット爪を前記ステージの側
端部に設け、前記ステージを前記壁面に沿って上方に引
き上げて前記ラチェット爪が前記欠き込み凹部に係合し
た位置にてこの凹部とラチェットとの係合を支点として
前記ステージを固定するようにした。
[Means for Solving the Problems] Therefore, in the present invention, when constructing the wall body, a notch recess is formed at a predetermined position on the wall surface, and the toe portion that protrudes laterally rotates downward, and the toe portion that protrudes laterally rotates downward. A ratchet pawl that does not rotate is provided at the side end of the stage, and when the stage is pulled upward along the wall surface and the ratchet pawl engages with the notch recess, the recess and the ratchet are connected. The stage is fixed using the engagement as a fulcrum.

【0007】[0007]

【作用】この発明の方法では、前記壁体と前記ステージ
との間で直動式ラチェット機構が構成され、チェーンブ
ロック等でステージを自由に引き上げることができるが
、前記ステージを下降させると、前記ラチェット爪が前
記壁面の切欠き凹部に係合し、その位置より下へは下が
らない。
[Operation] In the method of the present invention, a direct-acting ratchet mechanism is constructed between the wall and the stage, and the stage can be freely raised with a chain block or the like, but when the stage is lowered, the The ratchet pawl engages with the notch recess in the wall surface and does not move below that position.

【0008】[0008]

【実施例】図1に本発明の一実施例によるコンクリート
壁体の構築方法の手順を示している。図おいて、1a、
1bは下方から上方へと段階的に構築されるコンクリー
ト壁体を示し、5a、5bはそれぞれ壁体1a、1bの
壁面の所定位置に形成された欠き込み凹部である。欠き
込み凹部5a、5bは水平な下面とそこから上方に傾斜
した斜面とからなっており、水平な下面部分には金属プ
レートが埋め込まれている。
Embodiment FIG. 1 shows the steps of a method for constructing a concrete wall according to an embodiment of the present invention. In the figure, 1a,
1b shows a concrete wall constructed in stages from the bottom to the top, and 5a and 5b are recesses formed at predetermined positions on the walls of the walls 1a and 1b, respectively. The cutout recesses 5a and 5b consist of a horizontal lower surface and a slope sloped upward from the horizontal lower surface, and a metal plate is embedded in the horizontal lower surface portion.

【0009】3はチェーンブロック等で吊り下げられた
型枠ステージ、4はステージ3に設けられた足場である
。この発明の方法ではステージ3の側端部に複数個のラ
チェット爪6を設ける。ラチェット爪6はピン6aを中
心に回動自在であり、爪先部分はステージ3の側端面よ
り突出している。回動中心のピン6aの前後の重量バラ
ンスにより、ラチェット爪6の爪先部分(根元側より軽
い)が上方へ回動するように常時付勢されているととも
に、ストッパ6bによってラチェット爪6が水平になっ
た状態より爪先部分が上方へ回動しないようになってい
る。ストッパ6bはラチェット爪6の爪先部分が下方に
回動する際はストッパとして作用せず、爪先部分の下方
回動は妨げられない。
[0009] 3 is a formwork stage suspended by chain blocks or the like, and 4 is a scaffold provided on the stage 3. In the method of this invention, a plurality of ratchet pawls 6 are provided at the side ends of the stage 3. The ratchet pawl 6 is rotatable around a pin 6a, and the tip of the ratchet protrudes from the side end surface of the stage 3. Due to the weight balance before and after the pin 6a at the center of rotation, the toe portion (lighter than the base side) of the ratchet pawl 6 is constantly urged to rotate upward, and the ratchet pawl 6 is held horizontally by the stopper 6b. The tip of the toe is prevented from rotating upwards. The stopper 6b does not act as a stopper when the toe portion of the ratchet pawl 6 rotates downward, and the downward rotation of the toe portion is not hindered.

【0010】図1(A)に示すように、ラチェット爪6
が水平に側方に突出し、その爪先部分がコンクリート壁
1aの壁面の欠き込み凹部5aに入り込んだ状態で爪6
にステージ3の重量が加わると、爪6と凹部5aとの係
合を支点としてステージ3が壁面の所定位置に固定され
る。このステージ3に設けた足場4を使って既設壁体1
aの上に新設する壁体1b用の型枠を設置し、その新設
壁体1bの施工後にチェーンブロック等でステージ3を
引き上げる。
As shown in FIG. 1(A), the ratchet pawl 6
The claw 6 protrudes horizontally to the side, and the claw 6 is inserted into the notch 5a in the wall surface of the concrete wall 1a.
When the weight of the stage 3 is added to the stage 3, the stage 3 is fixed at a predetermined position on the wall surface using the engagement between the claw 6 and the recess 5a as a fulcrum. Using the scaffolding 4 installed on this stage 3, the existing wall 1
A formwork for the new wall 1b is installed on top of a, and after the new wall 1b is constructed, the stage 3 is pulled up using a chain block or the like.

【0011】すると図1(B)のように、ラチェット爪
6の爪先部分が相対的に下方に回動して壁面を擦りなが
らステージ3が上昇する。そして図1(C)に示すよう
に新設壁体1bの施工時にこれに形成した欠き込み凹部
5bの位置を爪6が少し過ぎたところでステージ3を下
降させると、爪6の爪先部分が上方に回動しながら欠き
込み凹部5bに係合し、この係合によってステージ3が
壁面に固定される。
Then, as shown in FIG. 1(B), the tip portion of the ratchet pawl 6 rotates relatively downward, and the stage 3 rises while rubbing against the wall surface. Then, as shown in FIG. 1(C), when the stage 3 is lowered when the claw 6 has slightly passed the position of the notch 5b formed in the new wall 1b during construction, the tip of the claw 6 is moved upward. While rotating, it engages with the notch recess 5b, and this engagement fixes the stage 3 to the wall surface.

【0012】図2に本発明の方法のより具体的な実施形
態を示している。ここでは筒状に形成された地中連続壁
7の内側に内巻工法でコンクリートを壁体1a、1b、
……を下方から上方へと段階的に構築する。図の状態で
は壁体1bの欠き込み凹部5bにラチェット爪6を係合
させて型枠ステージ3を壁面に固定し、壁体1bの上に
次に形成する壁体用の型枠8を足場4を使って設置し、
この型枠8と地中連続壁7との間にコンクリートを打設
することになる。なお型枠8の所定位置には前述の欠き
込み凹部5a、5b、……を形成するための三角形状の
突起8aが設けられている。
FIG. 2 shows a more specific embodiment of the method of the present invention. Here, concrete is applied to walls 1a, 1b,
...is built step by step from the bottom to the top. In the state shown in the figure, the ratchet pawl 6 is engaged with the notch recess 5b of the wall 1b to fix the formwork stage 3 to the wall surface, and the formwork 8 for the next wall to be formed on the wall 1b is set as a scaffold. Install using 4,
Concrete will be placed between this formwork 8 and the underground continuous wall 7. Note that triangular projections 8a are provided at predetermined positions on the formwork 8 for forming the aforementioned notched recesses 5a, 5b, . . . .

【0013】[0013]

【発明の効果】この発明の方法では、壁体の施工時に壁
面の所定位置に形成していく欠き込み凹部と、型枠ステ
ージに設けたラチェット爪とによって直動式のラチェッ
ト機構が構成され、チェーンブロック等でステージを自
由に上方へ引き上げることができるとともに、所定位置
にてステージを若干下降させるとラチェット爪が壁面の
欠き込み凹部に係合し、その係合によってステージが支
持されて壁面の所定位置に固定される。したがって壁体
を下方から上方へと段階的に構築するのに伴ってステー
ジを引き上げて所定の位置に固定するという繰返し作業
を極めて能率的にしかも安全に行うことができる。
[Effects of the Invention] In the method of the present invention, a direct-acting ratchet mechanism is constructed by the notch recess formed at a predetermined position on the wall surface during wall construction and the ratchet pawl provided on the formwork stage. The stage can be freely pulled upwards with a chain block, etc., and when the stage is lowered slightly at a predetermined position, the ratchet pawl engages with the notch in the wall, and the stage is supported by this engagement and the stage is supported by the wall. Fixed in place. Therefore, as the wall is built step by step from the bottom to the top, the stage can be pulled up and fixed at a predetermined position repeatedly, which can be carried out extremely efficiently and safely.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】この発明の一実施例によるコンクリート壁体の
構築方法の概略図である。
FIG. 1 is a schematic diagram of a method for constructing a concrete wall according to an embodiment of the present invention.

【図2】同上構築方法のより具体的な実施形態を示す図
である。
FIG. 2 is a diagram showing a more specific embodiment of the above construction method.

【図3】従来方法の概要とその問題点を示すための図で
ある。
FIG. 3 is a diagram showing an overview of a conventional method and its problems.

【符号の説明】 1a、1b  コンクリート壁体 2a、2b  ブラケット 3  型枠ステージ 4  足場 5a、5b  欠き込み凹部 6  ラチェット爪 6a  ピン 6b  ストッパ 7  地中連続壁 8  型枠 8a  欠き込み形成用突起[Explanation of symbols] 1a, 1b Concrete wall 2a, 2b bracket 3 Formwork stage 4 Scaffolding 5a, 5b Notch recess 6 Ratchet pawl 6a pin 6b Stopper 7 Underground wall 8 Formwork 8a Notch forming protrusion

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  コンクリート壁体を下方から上方へと
段階的に構築するにあたり、壁体の既設部分を支点とし
て型枠ステージを所定位置に固定し、このステージに設
けた足場を使って前記既設壁体の上に新設する壁体用の
型枠を設置し、その新設壁体の施工後に前記ステージを
所定位置まで引き上げて前記壁体を支点として固定する
という手順を繰り返す方法において、前記壁体の施工時
に壁面の所定位置に欠き込み凹部を形成しておき、側方
に突出した爪先部分が下方に回動し上方には回動しない
構成のラチェット爪を前記ステージの側端部に設け、前
記ステージを前記壁面に沿って上方に引き上げて前記ラ
チェット爪が前記欠き込み凹部に係合した位置にてこの
凹部とラチェットとの係合を支点として前記ステージを
固定することを特徴とするコンクリート壁体の構築方法
Claim 1: When constructing a concrete wall in stages from the bottom to the top, a formwork stage is fixed at a predetermined position using the existing part of the wall as a fulcrum, and scaffolding provided on this stage is used to construct the existing part of the wall. In a method in which a formwork for a newly constructed wall is installed on top of the wall, and after the construction of the new wall, the stage is pulled up to a predetermined position and fixed using the wall as a fulcrum, the steps are repeated. During construction, a recess is formed at a predetermined position on the wall surface, and a ratchet claw is provided at the side end of the stage, the claw portion of which protrudes laterally pivots downward but does not rotate upward; A concrete wall characterized in that the stage is pulled upward along the wall surface and the stage is fixed at a position where the ratchet pawl engages with the notch recess using the engagement between the recess and the ratchet as a fulcrum. How to build your body.
JP3013068A 1991-01-10 1991-01-10 How to build a concrete wall Expired - Lifetime JP2776031B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3013068A JP2776031B2 (en) 1991-01-10 1991-01-10 How to build a concrete wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3013068A JP2776031B2 (en) 1991-01-10 1991-01-10 How to build a concrete wall

Publications (2)

Publication Number Publication Date
JPH04238961A true JPH04238961A (en) 1992-08-26
JP2776031B2 JP2776031B2 (en) 1998-07-16

Family

ID=11822831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3013068A Expired - Lifetime JP2776031B2 (en) 1991-01-10 1991-01-10 How to build a concrete wall

Country Status (1)

Country Link
JP (1) JP2776031B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2473024A (en) * 2009-08-26 2011-03-02 Waycon Precast Ltd Access platform for use in hollow shafts, especially prefabricated concrete elevator shafts
JP2012026159A (en) * 2010-07-23 2012-02-09 Morisaki Kensetsu Kogyo Co Ltd Construction method of hollow box type laminated concrete structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6431837U (en) * 1987-08-21 1989-02-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6431837U (en) * 1987-08-21 1989-02-28

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2473024A (en) * 2009-08-26 2011-03-02 Waycon Precast Ltd Access platform for use in hollow shafts, especially prefabricated concrete elevator shafts
JP2012026159A (en) * 2010-07-23 2012-02-09 Morisaki Kensetsu Kogyo Co Ltd Construction method of hollow box type laminated concrete structure

Also Published As

Publication number Publication date
JP2776031B2 (en) 1998-07-16

Similar Documents

Publication Publication Date Title
CN2929056Y (en) Hydraulic driving automatic climbing formwork
US5159993A (en) Self-raising work platform assembly
CN102777030A (en) Method for building up formwork construction platform of lift shaft
KR20110055053A (en) Lifting loop set for precast concrete members
JPH04238961A (en) Construction method for concrete wall body
JP3028071B2 (en) Top removal method and scaffold for removal work of ultra-high tubular structure
KR200182858Y1 (en) Moving work deck for constructing a core section of building
JP2002294633A (en) Method and device for constructing arch-shaped structural body
JPH07286449A (en) Method for constructing underground type storage tank
JP3063548B2 (en) Formwork method and equipment
JPH09296600A (en) Scaffolding for slope work and erection method thereof
KR200159796Y1 (en) Elevating device of form for underground building construction work in the underground
KR20190137485A (en) Gang form lifting device and outdoor wall construction method of building using the same
CN1046659C (en) Aerial prefabricating and constructing tech. for prestressed concrete arch-bar roof truss
JP3224152B2 (en) Construction method of cross beam in concrete building
JPH0681314A (en) Construction method for concrete main tower
KR900003536B1 (en) Method and device for making a chimney stack
JP3560000B2 (en) Vertical shaft moving center
JPH09296610A (en) Outside curing unit
JPS5935738Y2 (en) Formwork for concrete pouring on walls of power plants, etc.
JPH0462246A (en) Lifting construction process
JPS59206506A (en) Method and apparatus for constructing hollow concrete structure
JPS6223845Y2 (en)
JPH09302925A (en) Method of concrete placing construction and self-lifting type concrete form used for method of concrete placing construction thereof
JPS5920501Y2 (en) Safety handrail of firebrick construction machine