JP2014031632A - Wind-resistant reinforcement method for elevating form - Google Patents

Wind-resistant reinforcement method for elevating form Download PDF

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JP2014031632A
JP2014031632A JP2012171762A JP2012171762A JP2014031632A JP 2014031632 A JP2014031632 A JP 2014031632A JP 2012171762 A JP2012171762 A JP 2012171762A JP 2012171762 A JP2012171762 A JP 2012171762A JP 2014031632 A JP2014031632 A JP 2014031632A
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formwork
concrete
lifting
wind
rail
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JP5990427B2 (en
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Takashi Nonomura
隆 野々村
Akira Mizutani
亮 水谷
Kotaro Nakamura
幸太郎 中村
Shoji Kato
昌二 加藤
Takashi Ueda
孝 上田
Masaomi Niihara
正臣 新原
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Kajima Corp
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Kajima Corp
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Abstract

PROBLEM TO BE SOLVED: To reinforce a form face plate so as to resist a wind load acting on the form face plate of a scaffold-cum-form, on the occurrence of a strong wind and a wind gust caused by a typhoon and a severe atmospheric depression.SOLUTION: An elevating form, which includes a work platform and a form for a concrete placing object section, is lifted/lowered with respect to an existing concrete section exerting strength because the placing has already been completed. When the form is arranged in the state of overhanging upward from the existing concrete section, a lateral batten 31 is attached to a form face plate 26 or a form frame 36 of the form 15. The lateral batten 31 is held by being laid between concrete-hardened column bodies 28 having already been constructed on both sides of a wall section.

Description

本発明は、昇降式型枠の耐風補強方法に関するものである。   The present invention relates to a wind-resistant reinforcing method for a liftable formwork.

現在、足場等の仮設物に対する風に対する指針・基準は仮設工業会「風荷重に対する足場の安全技術指針」しかない。   At present, the only guideline and standard for wind for temporary structures such as scaffolding is the temporary industry association “Safety Technical Guidelines for Scaffolds for Wind Load”.

しかし足場は台風の接近時には予報があり、足場のシートの取り外し等の対策を前提に台風接近時の観測データは統計データから除外している。また、安全性と経済性の両面から検討しているため、足場の存置期間が6ヶ月の場合、その期間の最大風速が再現期間12ケ月の風速を超える確率は40.7%、足場の存置期間が12ヶ月の場合は64.8%となる。つまり、仮設工業会の指針を守っていれば台風以外の風でも100%安全という訳ではない。   However, there is a forecast when the typhoon is approaching the scaffold, and observation data when the typhoon is approaching is excluded from the statistical data on the premise of measures such as removing the seat of the scaffold. In addition, considering the safety and economic aspects, if the scaffolding period is 6 months, the probability that the maximum wind speed during that period will exceed the 12-month reproduction period is 40.7%. When the period is 12 months, it is 64.8%. In other words, if you follow the guidelines of the Temporary Industrial Association, winds other than typhoons are not 100% safe.

一方、近年超高層タワーマンションの需要が高まり、160m前後、最大は200mのものまで登場している。風は高さが高くなると急激に風速が大きくなる。仮設工業会は100mまでの表しかないが、出願人は仮設工業会の指針の考え方を延長するとともに100m以上の高さ部分での歪みを修正した表を作成した。(最高650mまで)   On the other hand, in recent years, the demand for high-rise tower condominiums has risen, and around 160m, the maximum is up to 200m. The wind speed increases rapidly as the height increases. Although the temporary industry association only represents up to 100 m, the applicant has extended the idea of the temporary industry association guideline and created a table in which distortion at a height of 100 m or more is corrected. (Up to 650m)

これにより、仮設工業会の指針の考え方と気象庁の台風時の予報(気象庁に海上10mの高さで行っているのを確認した。)を組み合わせて台風時のその建物の高さでの風速を算定できるようにした。   By combining the idea of the guidelines of the Temporary Industrial Association and the forecast of the typhoon of the Japan Meteorological Agency (confirmed that the Meteorological Agency is performing at a height of 10 m above the sea), the wind speed at the height of the building during the typhoon is calculated. I was able to calculate.

足場では台風の接近時の予報で足場のシートの取り外し等の対策をとることは容易であるが、足場と型枠を備えた昇降機能を備えた型枠装置(以下、自昇式型枠装置と呼ぶ)では、壁型枠パネルを簡単に外すことはできない。また、足場の垂直養生は風通しの悪いシートではなく15mm目(量15mmの格子)のネットに変えることで風荷重を低減することも可能であるが、型枠はそういった調整もできない。   Although it is easy to take measures such as removing the seat of the scaffold by forecasting when the typhoon is approaching in the scaffolding, a formwork device with a lifting function equipped with a scaffold and a formwork (hereinafter referred to as a self-raising formwork device) The wall formwork panel cannot be easily removed. The vertical curing of the scaffold can be reduced to a 15 mm net (15 mm grid) net instead of a poorly ventilated sheet, but the formwork cannot be adjusted as such.

自昇式型枠装置は各種あるが、下記特許文献にその一例を示す。
特開平8−144514号公報
There are various types of self-elevating formwork devices, and examples thereof are shown in the following patent documents.
JP-A-8-144514

図10〜図13に示すように、昇降用レールDと、昇降用レールDに上下摺動部2,3を介して装着すると共に、上下に移動可能となる作業足場枠体Aと、コンクリート壁50側に向って進退自在となる型枠支持体Bと、油圧シリンダ22の作動によって昇降用レールDに沿って昇降する昇降器Cとを備える。   As shown in FIGS. 10 to 13, the lifting rail D, the working scaffold frame A that is mounted on the lifting rail D via the vertical sliding portions 2 and 3 and is movable up and down, and the concrete wall A formwork support B that can move forward and backward toward the 50 side and an elevator C that moves up and down along the lifting rail D by the operation of the hydraulic cylinder 22 are provided.

昇降器Cを作業足場枠体Aに接続し、昇降器Cの作動によって、作業足場枠体Aが昇降用レールDに沿って昇降するよう構成し、作業足場枠体A及び型枠支持体Bに作業床5,11を設ける。   The elevator C is connected to the work scaffold frame A, and the work scaffold frame A is moved up and down along the lift rail D by the operation of the elevator C. The work scaffold frame A and the formwork support B Work floors 5 and 11 are provided.

作業足場枠体Aは、適宜縦枠材や、横枠材や、斜材等によって適宜形状に構枠し、その上部左右には、一対の昇降ビーム1を水平に且つ平行に配置し、その上部、下部、中央部には、作業床5を夫々設けてある。   The work scaffold frame A is appropriately framed by a vertical frame member, a horizontal frame member, a diagonal member, etc., and a pair of lifting beams 1 are horizontally and parallelly arranged on the upper and left sides thereof. Work floors 5 are provided at the upper, lower, and central portions, respectively.

図中6は、後述する昇降器Cを作動せしめるための油圧ユニットで、7は、正面部や左右側部や底部を覆うように配置される養生ネットである。   In the figure, 6 is a hydraulic unit for operating an elevator C, which will be described later, and 7 is a curing net arranged so as to cover the front portion, the left and right side portions, and the bottom portion.

作業足場枠体Aは、上摺動部2と下摺動部3とによって昇降用レールDに摺動自在に装着されるが、上摺動部2は、昇降ビーム1の先端部分によって構成され、下摺動部3は、作業足場枠体Aの中央部分に配置されている。すなわち、上摺動部2と下摺動部3によって、作業足場枠体Aが昇降用レールDから脱落することなく、安定的に且つスムーズに昇降用レールDに沿って上下に移動可能となる。   The working scaffold frame A is slidably mounted on the lifting rail D by the upper sliding portion 2 and the lower sliding portion 3, and the upper sliding portion 2 is configured by the tip portion of the lifting beam 1. The lower sliding portion 3 is disposed in the central portion of the work scaffold frame A. That is, the upper sliding portion 2 and the lower sliding portion 3 allow the work scaffold frame A to move up and down along the lifting rail D stably and smoothly without dropping from the lifting rail D. .

下摺動部3には、水平方向に於いてコンクリート壁50表面に向かって進退自在に移動する突き当て突起8を設けた。   The lower sliding portion 3 is provided with an abutting protrusion 8 that moves in a horizontal direction toward the surface of the concrete wall 50 so as to freely advance and retract.

型枠支持体Bは、適宜縦枠材や、横枠材や、斜材等によって適宜形状(例えば、矩形枠状)に構枠し、その下部左右には、一対の摺動体10を配置し、その上部、中央部には、作業床11を設ける。   The formwork support B is appropriately formed into a shape (for example, a rectangular frame shape) using a vertical frame material, a horizontal frame material, a diagonal material, and the like, and a pair of sliding bodies 10 are disposed on the lower left and right sides thereof. The work floor 11 is provided in the upper part and the center part.

型枠支持体Bのコンクリート壁50側には型枠15を取り付け、正面部や左右側部を養生ネット16で覆う。   The formwork 15 is attached to the concrete wall 50 side of the formwork support B, and the front part and the left and right side parts are covered with the curing net 16.

型枠支持体Bは、一対の摺動体10が、作業足場枠体Aの昇降ビーム1に摺動自在に装着されると共に、コンクリート壁50側に向かって進退自在となるよう作業足場枠体A上部に装着されている。すなわち、型枠支持体Bは、摺動体10によって、コンクリート型枠15の配設位置を水平方向に於いて任意に変更でき、コンクリート型枠15の所定位置へのセットや、脱型が容易に行える。   The formwork support B is configured such that the pair of sliding bodies 10 is slidably mounted on the lifting beam 1 of the working scaffold frame A and can move forward and backward toward the concrete wall 50 side. Mounted on top. That is, the formwork support B can arbitrarily change the arrangement position of the concrete formwork 15 in the horizontal direction by the sliding body 10, and the concrete formwork 15 can be easily set or removed from the predetermined position. Yes.

摺動体10は、例えば、昇降ビーム1に張設されたチェーンに係止されるスプロケットを摺動体10に取り付け、このスプロケットを手動工具等によって回転せしめることにより昇降ビーム1に対して進退自在に摺動させる。   The sliding body 10 is, for example, attached to the sliding body 10 with a sprocket that is locked to a chain stretched on the lifting beam 1, and is slidable with respect to the lifting beam 1 by rotating the sprocket with a manual tool or the like. Move.

昇降器Cは、昇降用レールDに摺動自在に装着される上部係止部20と、昇降用レールDに摺動自在に装着される下部係止部21と、この上部係止部20と下部係止部21の間に介装されると共に、上部係止部20と下部係止部21とを自在に離隔接近せしめられる油圧シリンダ22とで構成する。   The elevator C includes an upper locking portion 20 slidably mounted on the lifting rail D, a lower locking portion 21 slidably mounted on the lifting rail D, and the upper locking portion 20. A hydraulic cylinder 22 is interposed between the lower locking portion 21 and allows the upper locking portion 20 and the lower locking portion 21 to be freely spaced apart from each other.

そして、上部係止部20及び下部係止部21には、昇降用レールDをその長手方向に沿ってラチェット機構により摺動自在となる。すなわち、昇降用レールDは、油圧シリンダ22の繰返しの伸縮動作によって、上下部係止部20,21が順次係止されながら、昇降用レールDに沿って昇降する。   The upper and lower locking portions 20 and 21 are slidable by the ratchet mechanism along the longitudinal direction of the lifting rail D. That is, the elevating rail D moves up and down along the elevating rail D while the upper and lower portion locking portions 20 and 21 are sequentially locked by the repeated expansion and contraction of the hydraulic cylinder 22.

昇降用レールDは、コンクリート壁50に予め埋設されたアンカー40に装着する。   The elevating rail D is attached to an anchor 40 embedded in the concrete wall 50 in advance.

このようにして、先ず、コンクリート壁50にアンカー40を予め埋設し、コンクリート壁50表面に複数の昇降用レールDを所定間隔に取り付ける。   Thus, first, the anchor 40 is embedded in the concrete wall 50 in advance, and a plurality of lifting rails D are attached to the surface of the concrete wall 50 at predetermined intervals.

それから、この昇降用レールDに足場付型枠装置をセットする。すなわち、作業足場枠体Aの上摺動部2、下摺動部3で昇降用レールDを抱持するように装着すると共に、昇降器Cの上部係止部20、下部係止部21で昇降用レールDを抱持するように装着する。   Then, a scaffolding formwork apparatus is set on the lifting rail D. In other words, the upper and lower sliding parts 2 and 3 of the work scaffold frame A are mounted so as to hold the lifting rail D, and the upper and lower locking parts 20 and 21 of the elevator C are used. It is attached so as to hold the elevating rail D.

下摺動部3の突き当て突起8を回転させて、突き当て突起8をコンクリート壁50に突き当てながら、作業足場枠体Aが垂直状態となるように調節する。   The abutment protrusion 8 of the lower sliding portion 3 is rotated, and the abutment protrusion 8 is abutted against the concrete wall 50 and adjusted so that the work scaffold frame A is in a vertical state.

そして、型枠支持体Bをコンクリート壁50側の所望位置に摺動せしめる。(例えば、昇降ビーム1に張設されたチェーンに係止されるスプロケットを手動工具等によって回転せしめて摺動させる。)   Then, the formwork support B is slid to a desired position on the concrete wall 50 side. (For example, a sprocket that is locked to a chain stretched on the elevating beam 1 is rotated by a manual tool or the like to slide.)

次に、コンクリートを打設し、これの硬化を待って、型枠支持体Bを後退せしめると共に、コンクリート型枠15を脱型する。   Next, concrete is cast, and after waiting for this to harden, the formwork support B is retracted and the concrete formwork 15 is removed.

この後、昇降器Cの作動によって昇降用レールDを上昇せしめると共に、昇降器Cの油圧シリンダ22を作業足場枠体Aの油圧ユニット6によって作動せしめて、昇降器Cを昇降用レールDに沿って上昇せしめると共に、作業足場枠体A及び型枠支持体Bを所望位置まで上昇せしめる。   Thereafter, the elevator rail D is raised by the operation of the elevator C, and the hydraulic cylinder 22 of the elevator C is operated by the hydraulic unit 6 of the work scaffold frame A, so that the elevator C is moved along the elevator rail D. The working scaffold frame A and the formwork support B are raised to desired positions.

すなわち、昇降器Cの油圧シリンダ22を伸長せしめ(下部係止部21を昇降用レールDの昇降用ブロックに係止されたままとし、上部係止部20を上昇せしめ)ると、上部係止部20が上方にある昇降用ブロックに係止され、次に、昇降器Cの油圧シリンダ22を収縮せしめ(上部係止部20を昇降用ブロックに係止されたままとし、下部係止部21を上昇せしめ)ると、下部係止部21が上方にある昇降用ブロックに係止され、更に、昇降器Cの油圧シリンダ22を伸長せしめ(下部係止部21を昇降用レールDの昇降用ブロックに係止されたままとし、上部係止部20を上昇せしめ)ると、上部係止部20が更に上方にある昇降用ブロックに係止され、これを順次繰返すことによって、足場付型枠装置Sが昇降器Cによって昇降用レールDに沿って上昇するようになり、この昇降器Cの上昇によって、作業足場枠体A及び型枠支持体Bも昇降用レールDに沿って所望位置まで上昇するようになる。   That is, when the hydraulic cylinder 22 of the elevator C is extended (the lower locking portion 21 remains locked to the lifting block of the lifting rail D and the upper locking portion 20 is raised), the upper locking is achieved. The part 20 is locked to the upper lifting block, and then the hydraulic cylinder 22 of the elevator C is contracted (the upper locking part 20 remains locked to the lifting block, and the lower locking part 21 ), The lower locking portion 21 is locked to the upper lifting block, and the hydraulic cylinder 22 of the elevator C is extended (the lower locking portion 21 is used to lift the lifting rail D). When the upper locking portion 20 is lifted), the upper locking portion 20 is locked to the upper lifting block, and this is sequentially repeated to form a scaffolding frame. The device S is moved up and down by an elevator C. Now rises along the D, by the rising of the elevator C, work scaffolding frame A and formwork support B also becomes to rise to the desired position along the elevating rails D.

そして、前述のような作業を繰返しながら適宜構造物のコンクリート壁50を上方に向かって順次構築して行く。すなわち、コンクリート壁50にアンカー40を設けながら、昇降器Cの作動によって昇降用レールDを上昇せしめると共に、この昇降用レールDの上端部分を固定し、次に、昇降器Cの作動によって作業足場枠体Aを昇降用レールDに沿って上昇せしめながら、作業足場枠体Aを順次上昇せしめて、コンクリート壁50を上方に向かって順次構築する。   And the concrete wall 50 of a structure is constructed | assembled sequentially toward upper direction suitably, repeating the above operations. That is, while the anchor 40 is provided on the concrete wall 50, the elevator rail D is raised by the operation of the elevator C, the upper end portion of the elevator rail D is fixed, and then the working scaffold is operated by the operation of the elevator C. While raising the frame A along the elevating rail D, the work scaffold frame A is sequentially raised, and the concrete wall 50 is sequentially constructed upward.

類似の技術としては、下記非特許文献のものがある。
インターネットのウェブサイトdoka社のホームページ 製品:Xclimb6)http://www.doka.com/web/home/index.de.php?startPageLanuae=AT例えば、[Produkte]→[Doka-Kletter-Systeme]→[Selbstkletterschalungen]→[SelbstkletterschalungXclimb60]ページ右[MEDIA]の動画参照。
Similar techniques include those of the following non-patent documents.
Internet website doka's homepage Product: Xclimb6) http://www.doka.com/web/home/index.de.php?startPageLanuae=AT For example, [Produkte] → [Doka-Kletter-Systeme] → [ Selbstkletterschalungen] → [SelbstkletterschalungXclimb60] Refer to the video on the right [MEDIA] page.

このdoka社の自昇式型枠装置は、建築物や構造物等の建設作業において、既に打設が終了し強度が発生しているコンクリート部に壁継ぎ部材をアンカーに固定しておき、壁継ぎ部材に斜め上方に伸長するように設けた油圧シリンダで、昇降用レールを順次押し上げるようにしたものである。   This doka company's self-raising formwork device has a wall joint member fixed to an anchor in a concrete part where the placement has already been completed and the strength has been generated in construction work such as a building or a structure. The lifting / lowering rail is sequentially pushed up by a hydraulic cylinder provided on the joint member so as to extend obliquely upward.

すなわち、前記特許文献1の自昇式型枠装置と比べて、油圧シリンダで押しあげるのは昇降用レールであり、昇降用レールには作業足場枠体および型枠支持体を装着し、これらも昇降用レールとともに押し上げる点で相違する。   That is, compared with the self-raising mold apparatus of Patent Document 1, it is the lifting rail that is pushed up by the hydraulic cylinder. The lifting rail is equipped with a working scaffold frame and a mold support, It differs in that it is pushed up together with the lifting rail.

従来の特許文献1や非特許文献1の自昇式型枠装置では、型枠部分は、型枠支持体Bにより支持されるものの、図10、図11に示すように型枠支持体(B)はキャンティレバー(片持ち式)になっているため、型枠に対して台風並みの強風が作用する場合には、風荷重に耐え切れず、型枠の異常共振や破損、また最悪の場合は落下という危険が生ずる。   In the conventional self-lifting formwork apparatus of Patent Document 1 and Non-Patent Document 1, the formwork portion is supported by the formwork support B, but the formwork support (B ) Is a cantilever (cantilever type), so if a strong wind like a typhoon acts on the formwork, it will not be able to withstand the wind load, causing abnormal resonance or damage to the formwork, or in the worst case There is a danger of falling.

通常のせり上げ足場ならば足場を逆クライミング(下げる)で跳ね出し状態を回避することも容易であるが、前記自昇式型枠装置では、ラチェット式の落下防止機能が徹底されている場合の逆クライミング作業は手間がかかる。   It is easy to avoid the jumping state by reverse climbing (lowering) the scaffold if it is a normal lifting platform, but in the self-raising formwork device, when the ratchet type fall prevention function is thoroughly implemented Reverse climbing work takes time.

型枠をクレーンで吊り降ろす(下部足場も含めて全体を撤去する)ことは可能だが、再セット作業や撤去後の別の養生構築を必要とすることから、作業の効率および経済性が極めて悪化するという難点があり、現実的ではない。   Although it is possible to suspend the formwork with a crane (remove the entire scaffold, including the lower scaffolding), work efficiency and economic efficiency are extremely deteriorated due to the need for re-setting work and construction of another curing after removal. It is difficult to do and is not realistic.

また、他の昇降動作が容易な昇降型枠装置においても、一旦上昇させたものを再度下降させるのは、養生盛り替え、安全設備盛り替え、アンカーブラケット再設置などの付随作業が必要となり、工程的、作業的にも無駄が多い。   In addition, even in other lifting and lowering formwork devices that are easy to move up and down, lowering once lifted requires additional work such as changing the curing, changing the safety equipment, and re-installing the anchor bracket. There is a lot of waste in terms of work and work.

本発明の目的は前記従来例の不都合を解消し、台風や強力低気圧による強風・突風発生時に、型枠の下降を必要としない簡易な耐風対策が実現できる昇降式型枠の耐風補強方法を提供することにある。   An object of the present invention is to provide a windproof reinforcement method for a liftable formwork that can eliminate the disadvantages of the conventional example and can realize a simple windproof measure that does not require lowering of the formwork when a strong wind or gust is generated due to a typhoon or strong low pressure. It is to provide.

前記目的を達成するため請求項1記載の本発明は、作業足場とコンクリート打設対象部位に対しての型枠とを有し、既に打設が終了し強度が発生している既設コンクリート部に対して昇降する昇降式型枠において、型枠が既設コンクリート部から上方に張り出して配置される場合に、型枠に横端太材を取り付け、この横端太材を構築済のコンクリートが硬化した柱体に直接的または間接的に掛け渡して保持させることを要旨とするものである。   In order to achieve the above object, the present invention according to claim 1 has a working scaffold and a mold for a concrete placement target part, and the existing concrete part where the placement has already been completed and the strength has been generated. In the liftable formwork that moves up and down, when the formwork is arranged to project upward from the existing concrete part, the thick end material is attached to the formwork, and the built-up concrete has hardened this thick end material. The gist of the present invention is to hold the pillar body directly or indirectly.

請求項1記載の本発明によれば、強風発生が予測される場合に、既にコンクリートが硬化した柱体に型枠面板部分を一時的に固着させて、柱と型枠面板とを一体の剛体として強度を確保することにより、昇降式型枠の風荷重に対する補強を行うことができる。   According to the first aspect of the present invention, when a strong wind is expected to occur, the formwork face plate portion is temporarily fixed to the pillar body on which the concrete has already hardened, and the pillar and the formwork face plate are integrated into a rigid body. By ensuring the strength, it is possible to reinforce the liftable formwork against the wind load.

請求項2記載の本発明は、昇降式型枠は、既に打設が終了し強度が発生しているコンクリート部に、シリンダによる昇降手段を設けた壁継ぎ部材をアンカー固定し、この昇降手段に昇降用レールを押し上げ可能に連結し、昇降用レールに作業足場枠体とコンクリート打設対象部位に対して進退自在に設けた型枠支持体とを装着した、もしくは、昇降用レールをアンカー固定し、この昇降用レールに、シリンダによる昇降手段を設けた作業足場枠体とコンクリート打設対象部位に対して進退自在に設けた型枠支持体とを押し上げ可能に連結したものである。   According to the second aspect of the present invention, the elevating mold is anchored to a wall joint member provided with elevating means by a cylinder in a concrete portion where the placement has already been finished and the strength has been generated. The lifting rail is connected so that it can be pushed up, and the lifting platform is fitted with a work scaffold frame and a formwork support that can be moved forward and backward with respect to the concrete placement target, or the lifting rail is anchored. The working platform frame provided with the lifting means by the cylinder and the formwork support provided so as to be able to advance and retreat with respect to the concrete placing target part are connected to the lifting rail so as to be pushed up.

請求項2記載の本発明によれば、昇降式型枠は通常のせり上げ足場ではなくRC造やSRC造の構造物工事において多用されている昇降機能を備えた型枠装置である自昇式型枠装置であり、ラチェット式の落下防止機能が徹底されて逆クライミング作業は手間がかかるので、これを行わずにより効果的に風荷重に対する補強を行うことができる。   According to the second aspect of the present invention, the elevating formwork is not a normal lifting scaffold but a self-elevating type which is a formwork apparatus having an elevating function that is frequently used in the construction of RC and SRC structures. Since it is a formwork device, the ratchet type fall prevention function is thoroughly implemented, and the reverse climbing work is troublesome, so that it is possible to effectively reinforce the wind load without performing this.

以上述べたように本発明の昇降式型枠の耐風補強方法は、台風や強力低気圧による強風・突風発生時に、型枠の下降を必要としない簡易な耐風対策が実現できるものである。   As described above, the windproof reinforcement method for a liftable mold according to the present invention can realize a simple windproof countermeasure that does not require lowering of the mold when a strong wind or gust is generated due to a typhoon or a strong low pressure.

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。先に、図6〜図9に本発明の耐風補強方法を施す自昇式型枠装置について説明するが、前記従来例を示す図10〜図13と同一構成要素には同一参照符号を付したものである。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the self-elevating formwork apparatus to which the wind-resistant reinforcing method of the present invention is applied will be described with reference to FIGS. 6 to 9, and the same components as those in FIGS. Is.

本発明を適用する自昇式型枠装置も前記従来例と同じく、昇降用レールDと、昇降用レールDとともに上下移動する作業足場枠体Aと、コンクリート壁50側に向かって進退自在となる型枠支持体Bと、油圧シリンダ22の作動によって昇降用レールDを昇降させる昇降器Cとを備える。   The self-elevating formwork apparatus to which the present invention is applied is also movable up and down toward the concrete wall 50 side, as in the conventional example, the lifting rail D, the working scaffold frame A that moves up and down together with the lifting rail D, and the like. A mold support B and an elevator C that raises and lowers the lifting rail D by the operation of the hydraulic cylinder 22 are provided.

昇降器Cはコンクリート壁50側に埋設するアンカー40でコンクリート壁50に固定する壁継ぎ部材30とこれに軸着した斜め上方に伸長する油圧シリンダ22と油圧シリンダ22の先端に設ける掛着金具23からなる。   The elevator C includes a wall joint member 30 fixed to the concrete wall 50 by an anchor 40 embedded on the concrete wall 50 side, a hydraulic cylinder 22 that is pivotally attached to the wall joint member 30, and a hook fitting 23 provided at the tip of the hydraulic cylinder 22. Consists of.

また、昇降用レールDは作業足場枠体Aの構成部材でもあるが、下向きの爪状部材24を適宜間隔で設けている。この爪状部材24は昇降用レールDの上昇時にラチェット的に壁継ぎ部材30に順次係合して、作業足場枠体Aの落下を防止する。   The lifting rail D is also a component of the work scaffold frame A, but is provided with downward claw-like members 24 at appropriate intervals. The claw-like member 24 is sequentially engaged with the wall joint member 30 in a ratchet manner when the elevating rail D is raised, thereby preventing the work scaffold frame A from falling.

壁継ぎ部材30は、油圧シリンダ22および掛着金具23を介して昇降用レールDを連結する。掛着金具23は昇降用レールDに対して掛着場所を変更できるものである。   The wall joint member 30 connects the elevating rail D via the hydraulic cylinder 22 and the hanging fitting 23. The hanging bracket 23 can change the hanging place with respect to the lifting rail D.

作業足場枠体A及び型枠支持体Bに作業床5,11を設ける。作業足場枠体Aは、適宜縦枠材や、横枠材や、斜材等によって適宜形状に構枠する。   Work floors 5 and 11 are provided on the work scaffold frame A and the formwork support B. The work scaffold frame A is appropriately framed by a vertical frame material, a horizontal frame material, a diagonal material, or the like.

型枠支持体Bは、適宜縦枠材や、横枠材や、斜材等によって適宜形状(例えば、矩形枠状)に構枠し、その下部左右には、一対の摺動体10を配置し、その上部、中央部には、作業床11を設ける。   The formwork support B is appropriately formed into a shape (for example, a rectangular frame shape) using a vertical frame material, a horizontal frame material, a diagonal material, and the like, and a pair of sliding bodies 10 are disposed on the lower left and right sides thereof. The work floor 11 is provided in the upper part and the center part.

型枠支持体Bのコンクリート壁50側には型枠15を取り付け、コンクリート壁50側に向かって進退自在となるよう作業足場枠体A上部に装着する。すなわち、型枠支持体Bは、摺動体10によって、コンクリート型枠15の配設位置を水平方向に於いて任意に変更でき、コンクリート型枠15の所定位置へのセットや、脱型が容易に行える。   The mold 15 is attached to the concrete wall 50 side of the mold support B, and is attached to the upper part of the work scaffold frame A so as to be able to advance and retreat toward the concrete wall 50 side. That is, the formwork support B can arbitrarily change the arrangement position of the concrete formwork 15 in the horizontal direction by the sliding body 10, and the concrete formwork 15 can be easily set or removed from the predetermined position. Yes.

図9に示すように、コンクリート型枠15は、型枠支持材25と、この型枠支持材25で支持される型枠フレーム36と、型枠フレーム36で支承される型枠面板26からなり、型枠支持材25はサポート27で支持される。   As shown in FIG. 9, the concrete formwork 15 includes a formwork support member 25, a formwork frame 36 supported by the formwork support member 25, and a formwork face plate 26 supported by the formwork frame 36. The mold support member 25 is supported by the support 27.

この自昇式型枠装置は、既に打設が終了し強度が発生しているコンクリート部に、アンカー40を埋設しておき、アンカー40に固定された壁継ぎ部材30とこれに固定された油圧シリンダ22を介して昇降用レールDを連結する。   In this self-elevating formwork apparatus, the anchor 40 is embedded in a concrete portion where the casting has already been finished and the strength has been generated, and the wall joint member 30 fixed to the anchor 40 and the hydraulic pressure fixed thereto. The elevating rail D is connected via the cylinder 22.

昇降用レールDには作業足場枠体Aおよび型枠支持体Bを装着してあり、油圧シリンダ22の斜め上方への伸長により作業足場枠体Aおよび型枠支持体Bが昇降用レールDとともに昇降する。   A work scaffold frame A and a formwork support B are mounted on the elevating rail D, and the work scaffold frame A and the formwork support B together with the elevating rail D are formed by extending the hydraulic cylinder 22 obliquely upward. Go up and down.

昇降用レールDの上昇に伴い壁継ぎ部材30に爪状部材24が順次係合することで昇降用レールDの落下が防止できる。   As the elevating rail D rises, the claw-like member 24 is sequentially engaged with the wall joint member 30 to prevent the elevating rail D from falling.

このように自昇式型枠装置は、打設したフレッシュコンクリートが硬化した後、その硬化コンクリート部を昇降用レールDの支持体として用いることにより、構造物の下層から上層までのコンクリート打設を連続的に行うものである。   As described above, the self-raising formwork device is used to perform concrete placement from the lower layer to the upper layer of the structure by using the hardened concrete portion as a support for the lifting rail D after the placed fresh concrete is cured. It is performed continuously.

本発明は、自昇式型枠装置が上昇後、硬化コンクリート部の上部階に出て、型枠支持体Bが片持ち支持状態になった場合に、図1〜図3に示すように、これからコンクリートを打設する予定部分の壁部の両側にあるコンクリートが硬化した柱体28に予めアンカー(図示せず)を打設しておき、そのアンカーにボルトによる支持金具29を接続し、この支持金具29が2本並んで間隔を存して柱体28から突き出るようにした。   As shown in FIGS. 1 to 3, when the present invention rises to the upper floor of the hardened concrete part after the ascending formwork apparatus is raised, and the formwork support B is in a cantilever support state An anchor (not shown) is previously placed on the pillar body 28 on which the concrete is hardened on both sides of the wall portion where the concrete is to be placed, and a support bracket 29 using a bolt is connected to the anchor. Two supporting metal fittings 29 are arranged side by side and protrude from the columnar body 28 with a space therebetween.

柱体28は、プレキャストコンクリート製柱がメインとなるが、場所打ちコンクリートの場合もあり得る。   The column 28 is mainly a precast concrete column, but may be cast-in-place concrete.

一方、コンクリート型枠15の型枠面板26には、鋼材ビームによる横端太材31を取り付け、さらに、上下段の横端太材31の端に縦材32を架け渡して枠組むものとし、この縦材32を柱体28上に置き、支持金具29間を通し、縦材32を支持金具29同士に渡したアングル材33で押さえる。   On the other hand, a horizontal end thick member 31 made of a steel beam is attached to the formwork face plate 26 of the concrete formwork 15, and a vertical member 32 is bridged over the ends of the upper and lower horizontal end thick members 31 to form a frame. The material 32 is placed on the column 28, passed between the support fittings 29, and the vertical member 32 is pressed by the angle member 33 that passes between the support fittings 29.

このようにして、型枠面板26に取り付けた横端太材31を、支持金具29に保持させる形態で前記壁部の両側に構築済のコンクリートが硬化した柱体28に掛け渡して設置する。   In this way, the lateral end thick members 31 attached to the formwork face plate 26 are installed so as to be held by the support fittings 29 over the pillars 28 on which the constructed concrete is hardened on both sides of the wall portion.

図3はその様子を示すものであり、コンクリート型枠15は閉じている状態で、型枠横端太材31を柱体28に予めアンカーセットして置き、コンクリート型枠15の鋼製横端太材31と緊結する。   FIG. 3 shows such a state, with the concrete formwork 15 being closed, the formwork lateral end thick material 31 is previously anchored to the column 28 and the steel side end of the concrete formwork 15 is placed. Tightly connected with the thick material 31.

強風が型枠面板26に作用しても、型枠面板26は横端太材31によりコンクリートが硬化した柱体28に強固に支持され、キャンティレバーではなく、柱と型枠面板とを一体の剛体として強度を確保することにより、共振、破損、落下等の不都合が生ずることを回避することができる。   Even if a strong wind acts on the formwork face plate 26, the formwork face plate 26 is firmly supported by the column body 28 with the hardened concrete by the side end thick material 31, and the pillar and the formwork face plate are integrated with each other instead of the cantilever. By ensuring the strength as a rigid body, it is possible to avoid inconveniences such as resonance, breakage, and drop.

また、これからコンクリートを打設する予定部分の壁部における既に配筋済の鉄筋に型枠面板26を近接させることにより、風荷重に対して、片面からは配筋済鉄筋が対抗し、その対面からは横端太材31が支持することにより、型枠面板26が横端太材31と配筋済鉄筋との間に挟まれる形態で耐風力を向上させてもよい。   Further, by placing the formwork face plate 26 in close proximity to the reinforcing bar already placed in the wall portion where the concrete is to be placed, the reinforcing bar is opposed to the wind load from one side. Since the horizontal end thick material 31 supports, the wind-resistant property may be improved in a form in which the formwork face plate 26 is sandwiched between the horizontal end thick material 31 and the reinforcing bar.

図2中、34は壁鉄筋であり、図示は省略するがこの壁鉄筋34を挟んで他側の型枠が設置され、セパレータ35で組立て、コンクリートを打設する。   In FIG. 2, reference numeral 34 denotes a wall reinforcing bar. Although not shown, a mold on the other side is installed across the wall reinforcing bar 34, and is assembled with a separator 35 and placed with concrete.

前記横端太材31は繋ぎ材となるものであるが、図5(a)に示すように繋ぎ材としての横端太材31はこれを直接型枠面板26に取り付ける場合の他、同図(b)に示すように型枠面板26を支持する型枠フレーム36に取り付けるようにしてもよいし、同図(c)に示すように、型枠フレーム36を支持する型枠支持材25に取り付けるようにしてもよい。   The horizontal end thick material 31 serves as a connecting material. As shown in FIG. 5A, the horizontal end thick material 31 as a connecting material is directly attached to the formwork face plate 26. As shown in (b), it may be attached to the formwork frame 36 that supports the formwork face plate 26, or as shown in FIG. You may make it attach.

前記図9でも説明したが、図4に示すようにコンクリート型枠15は、型枠支持材25と、この型枠支持材25で支持される型枠フレーム36と、型枠フレーム36で支承される型枠面板26からなる。   As described in FIG. 9, as shown in FIG. 4, the concrete formwork 15 is supported by the formwork support 25, the formwork frame 36 supported by the formwork support 25, and the formwork frame 36. A mold face plate 26.

前記横端太材31を構築済のコンクリートが硬化した柱体28に取り付けるに際し、補助部材としてアングル材33その他を介在させることも前記の通りである。   As described above, when the horizontal end thick material 31 is attached to the column 28 in which the constructed concrete is hardened, an angle member 33 and the like are interposed as auxiliary members.

以上の実施形態では、本発明の型枠面板の支持構造を施す自昇式型枠装置を既に打設が終了し強度が発生しているコンクリート部に、シリンダによる昇降手段を設けた壁継ぎ部材をアンカー固定し、この昇降手段に昇降用レールを押し上げ可能に連結し、昇降用レールに作業足場枠体とコンクリート打設対象部位に対して進退自在に設けた型枠支持体とを装着したものとしたが、他の実施形態として、図10〜図13に示すような昇降用レールをアンカー固定し、この昇降用レールに、シリンダによる昇降手段を設けた作業足場枠体とコンクリート打設対象部位に対して進退自在に設けた型枠支持体とを押し上げ可能に連結したものでもよい。   In the above embodiment, the wall joining member in which the raising and lowering means by the cylinder is provided in the concrete portion where the casting has already been finished and the strength has been generated in the self-raising mold apparatus for applying the support structure for the mold faceplate of the present invention. The lifting rail is connected to the lifting means so that the lifting rail can be pushed up, and the lifting support rail is mounted with a work scaffolding frame and a formwork support that can be moved forward and backward with respect to the concrete placement target part. However, as another embodiment, as shown in FIG. 10 to FIG. 13, a lifting rail as shown in FIG. 10 is anchored, and on this lifting rail, a working scaffold frame body provided with lifting means by a cylinder and a concrete placing target part. A formwork support provided so as to be able to advance and retreat with respect to the structure may be connected so as to be pushed up.

また、更なる実施形態として、図示は省略するが自昇式型枠装置ではなく、通常のせり上げ足場装置においても本発明は適用できるものである。   Further, as a further embodiment, although not shown, the present invention can be applied not only to a self-raising mold apparatus but also to a normal lifting scaffold apparatus.

本発明の昇降式型枠の耐風補強方法の1実施形態を示す要部の斜視図である。It is a perspective view of the principal part which shows one Embodiment of the wind-proof reinforcement method of the raising / lowering formwork of this invention. 本発明の昇降式型枠の耐風補強方法の1実施形態を示す平面図である。It is a top view which shows one Embodiment of the wind-proof reinforcement method of the raising / lowering formwork of this invention. 本発明の昇降式型枠の耐風補強方法の実施形態を示す側面図である。It is a side view which shows embodiment of the wind-proof reinforcement method of the raising / lowering formwork of this invention. コンクリート型枠の説明図である。It is explanatory drawing of a concrete formwork. 本発明の昇降式型枠の耐風補強方法のバリエーションを示す説明図である。It is explanatory drawing which shows the variation of the wind-resistant reinforcement method of the raising / lowering formwork of this invention. 本発明の昇降式型枠の耐風補強方法を施す自昇式型枠装置の側面図である。It is a side view of the self-raising mold apparatus which performs the wind-resistant reinforcement method of the raising / lowering mold form of this invention. 本発明の昇降式型枠の耐風補強方法を施す自昇式型枠装置の壁継ぎ部材(下部)の側面図である。It is a side view of the wall joint member (lower part) of the self-raising mold apparatus which performs the wind-resistant reinforcement method of the raising / lowering formwork of this invention. 本発明の昇降式型枠の耐風補強方法を施す自昇式型枠装置の壁継ぎ部材(上部)の側面図である。It is a side view of the wall joint member (upper part) of the self-raising formwork apparatus which performs the wind-resistant reinforcement method of the raising / lowering formwork of this invention. 本発明の昇降式型枠の耐風補強方法を施す自昇式型枠装置の型枠部分の側面図である。It is a side view of the formwork part of the self-raising formwork apparatus which performs the wind-resistant reinforcement method of the raising / lowering formwork of this invention. 自昇式型枠装置の一例を示す昇降前の側面図である。It is a side view before raising / lowering which shows an example of a self-raising mold apparatus. 自昇式型枠装置の一例を示す昇降後の側面図である。It is a side view after raising / lowering which shows an example of a self-raising mold apparatus. 自昇式型枠装置の一例を示す型枠設置時の側面図である。It is a side view at the time of mold installation which shows an example of a self-elevating mold apparatus. 自昇式型枠装置の一例を示す正面図である。It is a front view which shows an example of a self-raising mold apparatus.

A…作業足場枠体 B…型枠支持体
C…昇降器 D…昇降用レール
1…昇降ビーム 2…上摺動部
3…下摺動部
5…作業床 6…油圧ユニット
7…養生ネット 8…突起
10…摺動体 11…作業床
15…型枠 16…養生ネット
20…上部係止部 21…下部係止部
22…油圧シリンダ 23…掛着金具
24…爪状部材 25…型枠支持材
26…型枠面板 27…サポート
28…柱体 29…支持金具
30…壁継ぎ部材 31…横端太材
32…縦材 33…アングル材
34…壁鉄筋 35…セパレータ
36…型枠フレーム
40…アンカー 50…コンクリート壁
A ... Work scaffolding frame B ... Formwork support C ... Elevator D ... Raising / lowering rail 1 ... Elevating beam 2 ... Upper sliding part 3 ... Lower sliding part 5 ... Work floor 6 ... Hydraulic unit 7 ... Healing net 8 ... Projection 10 ... Sliding body 11 ... Work floor 15 ... Formwork 16 ... Curing net 20 ... Upper locking part 21 ... Lower locking part 22 ... Hydraulic cylinder 23 ... Hanging bracket 24 ... Nail-like member 25 ... Formwork support 26 ... Formwork face plate 27 ... Support 28 ... Column 29 ... Support metal fitting 30 ... Wall splicing member 31 ... Side end thick member 32 ... Vertical member 33 ... Angle member 34 ... Wall rebar 35 ... Separator 36 ... Formwork frame 40 ... Anchor 50 ... concrete wall

Claims (2)

作業足場とコンクリート打設対象部位に対しての型枠とを有し、既に打設が終了し強度が発生している既設コンクリート部に対して昇降する昇降式型枠において、型枠が既設コンクリート部から上方に張り出して配置される場合に、型枠に横端太材を取り付け、この横端太材を構築済のコンクリートが硬化した柱体に直接的または間接的に掛け渡して保持させることを特徴とした昇降式型枠の耐風補強方法。   In a liftable formwork that has a working scaffold and a formwork for the concrete placement target part, and that is raised and lowered with respect to the existing concrete part that has already been placed and has strength, the formwork is the existing concrete When projecting upward from the part, install a horizontal end thick material on the formwork, and hold this horizontal end thick material directly or indirectly over the pillar body on which the constructed concrete has hardened. Wind-proof reinforcement method for elevating formwork characterized by 昇降式型枠は、既に打設が終了し強度が発生しているコンクリート部に、シリンダによる昇降手段を設けた壁継ぎ部材をアンカー固定し、この昇降手段に昇降用レールを押し上げ可能に連結し、昇降用レールに作業足場枠体とコンクリート打設対象部位に対して進退自在に設けた型枠支持体とを装着した、もしくは、昇降用レールをアンカー固定し、この昇降用レールに、シリンダによる昇降手段を設けた作業足場枠体とコンクリート打設対象部位に対して進退自在に設けた型枠支持体とを押し上げ可能に連結したものである請求項1記載の昇降式型枠の耐風補強方法。   The lifting formwork is anchored to a concrete part that has already been cast and has strength and a wall splicing member provided with lifting means using a cylinder is anchored, and the lifting rail is connected to the lifting means so that it can be pushed up. The working rail frame and the formwork support provided so as to be able to advance and retreat with respect to the concrete placement target are attached to the lifting rail, or the lifting rail is anchored and the lifting rail is fixed to the cylinder 2. A wind-proof reinforcement method for a liftable formwork according to claim 1, wherein the working scaffold frame provided with the lifting means and the formwork support provided so as to be able to advance and retreat with respect to the concrete placing target part are connected so as to be pushed up. .
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Publication number Priority date Publication date Assignee Title
CN108166640A (en) * 2017-11-22 2018-06-15 东南大学 Assembled adds the structure that elevator cylinder minor structure reinforces former frame
KR20200028161A (en) * 2018-09-06 2020-03-16 이병영 Movable Form

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JPS6131568A (en) * 1984-07-23 1986-02-14 Shiraishi Corp Apparatus for regulating and supporting working elevator
JP2011515602A (en) * 2008-03-25 2011-05-19 ペリ ゲー・エム・ベー・ハー Rail-guided self-climbing formwork system with climbing rail extensions

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JPS6131568A (en) * 1984-07-23 1986-02-14 Shiraishi Corp Apparatus for regulating and supporting working elevator
JP2011515602A (en) * 2008-03-25 2011-05-19 ペリ ゲー・エム・ベー・ハー Rail-guided self-climbing formwork system with climbing rail extensions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108166640A (en) * 2017-11-22 2018-06-15 东南大学 Assembled adds the structure that elevator cylinder minor structure reinforces former frame
CN108166640B (en) * 2017-11-22 2021-08-24 东南大学 Structure for reinforcing original frame by assembled additional elevator shaft cylinder body substructure
KR20200028161A (en) * 2018-09-06 2020-03-16 이병영 Movable Form
KR102207137B1 (en) 2018-09-06 2021-01-25 이병영 Movable Form

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