JP6461026B2

JP6461026B2 - Formwork support

Info

Publication number: JP6461026B2
Application number: JP2016026597A
Authority: JP
Inventors: 章浩渡
Original assignee: 株式会社国元商会
Priority date: 2016-02-16
Filing date: 2016-02-16
Publication date: 2019-01-30
Anticipated expiration: 2036-02-16
Also published as: JP2017145576A

Description

本発明は、床版から垂直に立ち上がる立上り壁を構築する際に使用される立上り壁用コンクリート型枠を、床版構築空間の上側に浮かせて支持するための型枠浮かし支持具に関するものである。 The present invention relates to a formwork floating support for floating and supporting a concrete formwork for a rising wall, which is used when building a rising wall that rises vertically from a floor slab, above the floor slab construction space. .

床版と、この床版から垂直に立ち上がる立上り壁とを構築する場合、床版との間の入隅部上に配置される立上り壁用コンクリート型枠は、床版構築空間の上側に浮かせて支持しなければならない。このような場合には、特許文献１に記載されるように、床版構築空間内から立上り壁構築空間内にわたって配置される上下方向の縦筋に片持ち状に取り付けて、立上り壁用コンクリート型枠の下端を支持する型枠浮かし支持具が使用される。この特許文献１に記載の型枠浮かし支持具は、鉄筋への取付け部と、この取付け部から水平に連設された型枠支持用アームと、この型枠支持用アームに設けられた型枠支持部とから成る型枠浮かし支持具であって、前記型枠支持部は、上端が下端より大径の合成樹脂製のコーンと、このコーンの下端から垂直下方に突出する螺軸、及び前記型枠支持用アーム側に設けられて、前記螺軸の下端部を螺合連結させる上下方向のネジ孔から構成されていた。 When constructing a floor slab and a rising wall that rises vertically from this floor slab, the concrete form for the rising wall placed on the corner between the floor slab is floated above the floor slab construction space. Must support. In such a case, as described in Patent Document 1, it is attached in a cantilever manner to the vertical bars in the vertical direction arranged from the floor slab construction space to the rise wall construction space, and the concrete mold for the rise wall A formwork support that supports the lower end of the frame is used. The formwork floating support described in Patent Document 1 includes an attachment part to a reinforcing bar, a formwork support arm horizontally provided from the attachment part, and a formwork provided on the formwork support arm. A mold floating support comprising a support part, wherein the mold support part has a synthetic resin cone whose upper end is larger in diameter than the lower end, a screw shaft that projects vertically downward from the lower end of the cone, and It was provided on the mold support arm side, and was composed of a screw hole in the vertical direction that screwed and connected the lower end of the screw shaft.

特開２０１２−００７３２６号公報JP 2012-007326 A

特許文献１に記載された従来の型枠浮かし支持具の構成では、型枠支持用アームと型枠を支持するコーンとの間に、当該コーンの下端から下向きに突出する、比較的長さの長い螺軸が存在しており、支持されたコーンの、水平横向きの外力に対する安定性に欠ける点と、この型枠浮かし支持具を縦筋に取り付けるときの取付け高さを、前記コーンの上端の高さ、即ち、このコーンの上端で支持する型枠の支持高さに関連づけて正確に取り付けることが困難である、という問題点があった。 In the configuration of the conventional formwork floating support described in Patent Document 1, a relatively long length projecting downward from the lower end of the cone between the formwork support arm and the cone supporting the formwork. There is a long screw shaft, and the supported cone lacks stability against horizontal and horizontal external force, and the mounting height when this formwork floating support is attached to the vertical streak is determined at the top of the cone. There is a problem in that it is difficult to accurately attach in relation to the height, that is, the support height of the mold supported at the upper end of the cone.

本発明は、上記のような従来の問題点を解消することのできる型枠浮かし支持具を提案するものであって、本発明に係る型枠浮かし支持具は、後述する実施例との関係を理解し易くするために、当該実施例の説明において使用した参照符号を括弧付きで付して示すと、鉄筋(2)への取付け部(8)と、この取付け部(8)から水平に連設された型枠支持用アーム(9)と、この型枠支持用アーム(9)に設けられた型枠支持部(7)とから成る型枠浮かし支持具(1)であって、前記型枠支持部(7)は、軸杆(12)と、この軸杆(12)の上端部(12a)に着脱自在に嵌合され且つ上端が下端より大径の合成樹脂製のコーン(7a)と、前記型枠支持用アーム(9)に設けられた上下方向の軸杆差込み孔(13)とから成り、前記軸杆差込み孔(13)に前記軸杆(12)のコーン(7a)から下向きに突出する下端突出部(12b)を下向きに差し込んで、前記コーン(7a)の下端を前記型枠支持用アーム(9)の上側縁(9b)で支持させて成る型枠浮かし支持具において、前記型枠支持用アーム(9)は、前記取付け部(8)から、板面が上下垂直向きとなるように連設された帯状板(9a)から構成し、前記軸杆差込み孔(13)は、前記帯状板(9a)にその長さ方向に沿って設けられた上下２本の切込みの間の、片側に突曲する突曲板部(13a)の内側で構成されている。 The present invention proposes a form-floating support that can solve the conventional problems as described above, and the form-floating support according to the present invention has a relationship with the embodiments described later. For ease of understanding, the reference numerals used in the description of the embodiment are shown in parentheses, and the attachment portion (8) to the reinforcing bar (2) and the attachment portion (8) are connected horizontally. A formwork floating support (1) comprising a provided formwork support arm (9) and a formwork support part (7) provided on the formwork support arm (9), wherein the mold The frame support portion (7) includes a shaft rod (12) and a synthetic resin cone (7a) which is detachably fitted to the upper end portion (12a) of the shaft rod (12) and whose upper end is larger in diameter than the lower end. And a vertical shaft flange insertion hole (13) provided in the formwork support arm (9), and the shaft flange insertion hole (13) from the cone (7a) of the shaft flange (12). Lower end protrusion protruding downward (12b) to plug downwards, the formwork float support made by supported by the upper edge (9b) of said mold supporting arm lower end of the cone (7a) (9), said mold supporting arms (9) is composed of a belt-like plate (9a) that is continuously provided from the mounting portion (8) so that the plate surface is vertically oriented, and the shaft insertion hole (13) is formed of the belt-like plate ( 9a) is formed on the inner side of a bent plate portion (13a) that bends to one side between two upper and lower cuts provided along the length direction .

上記本発明の構成によれば、型枠支持部を構成する前記コーンは、鉄筋への取付け部から水平に連設された型枠支持用アームの上側辺で支持されるので、型枠の支持高さは、前記コーンに対する軸杆上端部の嵌合深さや、型枠支持用アーム側の軸杆差込み孔に対する前記軸杆下端部の差し込み深さなどに影響されることなく、型枠支持用アームの上側辺の高さに前記コーンの高さを加えた高さとなる。従って、使用に際して取付け部を上下方向の鉄筋（一般的には、床版構築空間内から立上り壁構築空間内にわたって配置される上下方向の縦筋）に取り付けるとき、支持する型枠の下端高さから、前記コーンの高さ分を差し引いた高さに、前記取付け部から連設されている型枠支持用アームの上側辺が位置するように取り付ければ、支持する型枠の下端高さを正確に設定高さに保持することが出来る。 According to the configuration of the present invention, the cone constituting the formwork support part is supported by the upper side of the formwork support arm provided horizontally from the attachment part to the reinforcing bar. The height is not affected by the fitting depth of the upper end portion of the shaft rod with respect to the cone, or the insertion depth of the lower end portion of the shaft rod with respect to the shaft rod insertion hole on the mold support arm side. This is a height obtained by adding the height of the cone to the height of the upper side of the arm. Therefore, when the mounting portion is attached to a vertical reinforcing bar (generally, a vertical vertical bar arranged from the floor slab construction space to the rising wall construction space) in use, the lower end height of the formwork to be supported The height of the lower end of the supporting formwork is accurately determined by attaching the upper side of the formwork support arm connected to the attachment part to the height obtained by subtracting the height of the cone. Can be held at the set height.

上記のように本発明の型枠浮かし支持具によれば、支持する型枠の下端高さを正確に設定高さに保持することが容易であり、しかも、型枠支持用アームの上側辺でコーンを直接支持する構造であるから、中間にコーンを支持する軸杆が存在する構造と比較して、支持されたコーン（型枠）の、水平横向きの外力に対する安定性が高く、安全且つ精度の高い型枠を構成出来る。更に本発明の構成では、前記型枠支持用アーム(9)は、前記嵌合部材(10)から、板面が上下垂直向きとなるように一体に連設された帯状板(9a)から構成し、前記軸杆差込み孔(13)は、前記帯状板(9a)にその長さ方向に沿って設けられた上下２本の切込みの間の、片側に突曲する突曲板部(13a)の内側で構成することが出来る。この構成によれば、他の部材を型枠支持用アームに溶接などにより固着する場合と比較して、本発明の型枠浮かし支持具を安価に構成することが出来る。
As described above, according to the formwork floating support of the present invention, it is easy to accurately maintain the lower end height of the formwork to be supported at the set height, and at the upper side of the formwork support arm. Since it is a structure that directly supports the cone, compared to a structure that has a shaft rod that supports the cone in the middle, the supported cone (formwork) has high stability against horizontal and horizontal external forces, and is safe and accurate. High formwork can be configured. Furthermore, in the configuration of the present invention, the formwork support arm (9) is configured by a strip-shaped plate (9a) that is integrally connected to the fitting member (10) so that the plate surface is vertically oriented. The shaft rod insertion hole (13) is a bent plate portion (13a) that bends to one side between two upper and lower cuts provided in the strip plate (9a) along its length direction. Can be configured inside. According to this structure, compared with the case where another member is fixed to the formwork support arm by welding or the like, the formwork support of the present invention can be configured at a low cost.

上記本発明を実施する場合、具体的には、前記取付け部(8)は、上下反転させることにより、上下方向の縦筋(2)に対し左右何れ側からも嵌合可能な嵌合部材(10)と、この嵌合部材(10)内に嵌合した前記縦筋(2)を押圧固定する締結用ボルト(11)とから構成し、前記型枠支持用アーム(9)は、前記嵌合部材(10)から、板面が上下垂直向きとなるように一体に連設された帯状板(9a)から構成し、前記軸杆差込み孔(13)は、前記帯状板(9a)の片側で上下方向に貫通して、前記軸杆(12)の下端突出部(12b)を前記帯状板(9a)の上下何れ側からも差し込み可能に構成し、前記コーン(7)の下端が前記帯状板(9a)の上側になる側縁(9b)に支持されるように構成することが出来る。この構成によれば、この型枠浮かし支持具を取り付けようとする縦筋の周囲の状況によって、当該縦筋に型枠浮かし支持具を左右何れ側からでも取り付けることが出来る。 When carrying out the present invention, specifically, the attachment portion (8) is a fitting member that can be fitted from either the left or right side with respect to the vertical bars (2) in the vertical direction by turning upside down. 10) and fastening bolts (11) for pressing and fixing the vertical bars (2) fitted in the fitting members (10), and the formwork support arm (9) Consists of a strip-shaped plate (9a) integrally connected so that the plate surface is vertically oriented vertically from the joint member (10), and the shaft flange insertion hole (13) is formed on one side of the strip-shaped plate (9a). The lower end protruding portion (12b) of the shaft rod (12) can be inserted from either the upper or lower side of the strip plate (9a), and the lower end of the cone (7) is the strip shape. It can comprise so that it may be supported by the side edge (9b) which becomes the upper side of a board (9a). According to this configuration, depending on the situation around the vertical stripe to which the formwork floating support is to be attached, the formwork floating support can be attached to the vertical line from either the left or right side.

又、前記型枠支持用アーム(9)は、前記嵌合部材(10)から、板面が上下垂直向きとなるように一体に連設された帯状板(9a)から構成し、前記軸杆差込み孔(13)は、前記帯状板(9a)にその長さ方向に沿って設けられた上下２本の切込みの間の、片側に突曲する突曲板部(13a)の内側で構成することが出来る。この構成によれば、他の部材を型枠支持用アームに溶接などにより固着する場合と比較して、本発明の型枠浮かし支持具を安価に構成することが出来る。勿論、前記軸杆差込み孔(13)を、前記帯状板(9a)の片側に固着された筒状部材(14)の中央貫通孔で構成することも可能である。この場合は、前記筒状部材として、適当長さのナットを利用し、上端部にコーンが着脱自在に嵌合される軸杆として、その全長又は下端部がネジ軸となっている軸杆を利用し、型枠支持用アームに対してコーンをネジ嵌合により強固に取り付けることが出来る。 Further, the mold support arm (9) is composed of a strip-shaped plate (9a) that is integrally connected to the fitting member (10) so that the plate surface is vertically oriented, and the shaft The insertion hole (13) is formed on the inner side of a bent plate portion (13a) that bends on one side between two upper and lower cuts provided along the length direction of the strip plate (9a). I can do it. According to this structure, compared with the case where another member is fixed to the formwork support arm by welding or the like, the formwork support of the present invention can be configured at a low cost. Of course, the shaft insertion hole (13) can be constituted by a central through hole of a tubular member (14) fixed to one side of the strip plate (9a). In this case, a nut having an appropriate length is used as the cylindrical member, and a shaft rod having a full length or a lower end portion as a screw shaft is used as a shaft rod in which a cone is detachably fitted to the upper end portion. The cone can be firmly attached to the mold support arm by screw fitting.

上記のように、前記取付け部(8)を、上下方向の縦筋(2)に対し横から嵌合可能な嵌合部材(10)と、この嵌合部材(10)内に嵌合した前記縦筋(2)を押圧固定する締結用ボルト(11)とから構成し、前記型枠支持用アーム(9)は、前記嵌合部材(10)から、板面が上下垂直向きとなるように一体に連設された帯状板(9a)から構成する場合は、前記嵌合部材(10)の、前記縦筋(2)に外嵌当接する、平面形状がＶ字形に凹入する縦筋受け部(10a)を、前記型枠支持用アーム(9)を構成する帯状板(9a)の上下巾よりも上下方向高さを大きくし、前記嵌合部材(10)の、前記帯状板(9a)と前記縦筋受け部(10a)との間の上側縁(10f)は、前記帯状板(9a)の、前記コーン(7a)を支持する上側縁(9b)と同一高さにするのが望ましい。この構成によれば、前記嵌合部材の前記縦筋に外嵌当接する縦筋受け部の高さが、前記型枠支持用アームを構成する帯状板の上下巾と等しい構成と比較して、前記型枠支持用アームを構成する帯状板の上下巾は必要最小限に抑えながら、前記嵌合部材の前記縦筋に当接する縦筋受け部には十分な高さを持たせて、縦筋に対する取付け状態での安定性と強度を高めることが出来る。しかも、前記嵌合部材の、縦筋に外嵌当接する縦筋受け部に隣接する部分の上側辺を参照して、縦筋に対する取付け高さを、支持する型枠の下端高さに対応した高さに容易に合わせることが出来る。 As described above, the attachment portion (8), the fitting member (10) that can be fitted from the side to the vertical stripe (2) in the vertical direction, and the fitting member (10) fitted in the fitting member (10) It is composed of fastening bolts (11) for pressing and fixing the vertical bars (2), and the formwork support arm (9) is arranged so that the plate surface is vertically oriented from the fitting member (10). In the case where the belt-shaped plate (9a) is provided integrally and continuously, the vertical member of the fitting member (10) that is externally contacted with the vertical bar (2) and whose planar shape is recessed into a V shape. The height of the portion (10a) is larger than the vertical width of the strip plate (9a) constituting the mold support arm (9), and the strip plate (9a) of the fitting member (10) ) And the vertical line receiving portion (10a), the upper edge (10f) of the belt-like plate (9a) should be flush with the upper edge (9b) supporting the cone (7a). desirable. According to this configuration, the height of the vertical bar receiving portion that externally contacts the vertical bar of the fitting member is compared with the configuration that is equal to the vertical width of the belt-like plate that forms the mold support arm, While maintaining the vertical width of the belt-like plate constituting the formwork support arm to the minimum necessary, the vertical bar receiving portion contacting the vertical bar of the fitting member has a sufficient height so that the vertical bar It is possible to increase the stability and strength in the mounted state. In addition, with reference to the upper side of the portion adjacent to the vertical bar receiving portion that is externally fitted to the vertical bar of the fitting member, the mounting height for the vertical bar corresponds to the lower end height of the supporting formwork. Can be easily adjusted to the height.

更に、前記型枠支持用アーム(9)を、板面が上下垂直向きとなる帯状板(9a)から構成する場合は、この帯状板(9a)の上下両側辺の内の少なくとも一方に、この帯状板(9a)の全長域にわたって片側へ折曲された折曲側辺部(9b,9c)を設けることにより、この型枠支持用アームの曲げ強度を高めることが出来る。前記折曲側辺部が、コーンが支持される側の側辺に設けられるときは、コーンの下端を支持する平面を備えた直角Ｌ形の折曲側辺部として、コーンを安定的に支持させることが出来る。 Further, when the formwork support arm (9) is composed of a belt-like plate (9a) whose plate surface is vertically oriented, this arm is placed on at least one of the upper and lower sides of the belt-like plate (9a). By providing the bent side portions (9b, 9c) bent to one side over the entire length of the belt-like plate (9a), the bending strength of the mold supporting arm can be increased. When the bent side is provided on the side on the side where the cone is supported, the cone is stably supported as a right-angled L-shaped bent side having a plane that supports the lower end of the cone. It can be made.

図１Ａは、本発明一実施例に係る型枠浮かし支持具の使用状態を示す一部縦断側面図、図１Ｂは、同横断平面図である。FIG. 1A is a partially longitudinal side view showing a use state of a formwork floating support according to an embodiment of the present invention, and FIG. 1B is a cross-sectional plan view thereof. 図２Ａは、型枠浮かし支持具の平面図、図２Ｂは、同型枠浮かし支持具の背面図である。FIG. 2A is a plan view of the formwork lifting support, and FIG. 2B is a rear view of the formwork support. 図３Ａは、型枠浮かし支持具の本体の横断平面図、図３Ｂは、本体から外したコーンの縦断面図と、本体の正面図である。FIG. 3A is a transverse plan view of the main body of the mold floating support, and FIG. 3B is a longitudinal sectional view of the cone removed from the main body and a front view of the main body. 図４Ａは、型枠浮かし支持具の本体の変形例を示す平面図、図４Ｂは、同変形例の型枠浮かし支持具の本体とコーンとを別々に示す正面図である。FIG. 4A is a plan view showing a modification of the main body of the mold floating support, and FIG. 4B is a front view showing the main body and the cone of the mold floating support of the modification separately. 図５は、型枠浮かし支持具の本体の別の変形例を示す正面図である。FIG. 5 is a front view showing another modification of the main body of the formwork floating support.

図１において、１は型枠浮かし支持具、２は、床版構築用のコンクリート打設空間３内から立上り壁構築用のコンクリート打設空間４内にわたって配設された上下方向の縦筋、５は、型枠浮かし支持具１によって支持された立上り壁構築用のコンクリート型枠５（以下、浮かし型枠と称する）である。型枠浮かし支持具１は、本体６と、この本体６に設けられた型枠支持部７とから構成されている。 In FIG. 1, reference numeral 1 denotes a formwork floating support, and 2 denotes vertical vertical bars arranged from the concrete placement space 3 for floor slab construction to the concrete placement space 4 for rise wall construction, 5 Is a concrete formwork 5 for building a rising wall supported by the formwork floating support 1 (hereinafter referred to as a floating formwork). The formwork floating support 1 includes a main body 6 and a formwork support portion 7 provided on the main body 6.

以下、型枠浮かし支持具１の具体構造を、図２及び図３に基づいて説明すると、本体１は、１枚の鉄板からプレス加工によって構成されたもので、縦筋２への取付け部８と、この取付け部８から水平に連設された型枠支持用アーム９から構成されている。取付け部８は、上下反転させることにより、縦筋２に対し左右何れ側からも嵌合させることが出来る嵌合部材１０と、この嵌合部材１０内に嵌合した縦筋２を押圧固定する締結用ボルト１１とから構成されている。嵌合部材１０は、縦筋２に外嵌当接する、平面形状がＶ字形に凹入する縦筋受け部１０ａと、この縦筋受け部１０ａの一端から連設されて、当該縦筋受け部１０ａに対面する板部１０ｂとから成り、この板部１０ｂに、前記締結用ボルト１１が、縦筋受け部１０ａに対する遠近方向に螺合貫通する貫通ネジ孔１０ｃが設けられている。前記嵌合部材１０には、その全域にわたって外側に突曲する補強用リブ１０ｄが一体形成されている。型枠支持用アーム９は、嵌合部材１０の板部１０ｂの遊端から、板面が上下垂直向きとなるように、縦筋受け部１０ａから遠ざかる方向に一体に折曲連設された帯状板９ａから構成されている。 Hereinafter, the specific structure of the form-floating support 1 will be described with reference to FIGS. 2 and 3. The main body 1 is formed by pressing from a single iron plate, and is attached to the longitudinal bars 2. And a mold support arm 9 provided horizontally from the mounting portion 8. The attachment part 8 presses and fixes the fitting member 10 that can be fitted to the vertical bar 2 from either the left or right side and the vertical bar 2 fitted in the fitting member 10 by being inverted upside down. It is comprised from the bolt 11 for fastening. The fitting member 10 is externally abutted on the vertical stripe 2 and has a vertical stripe receiving portion 10a whose planar shape is recessed in a V shape, and is connected to one end of the vertical stripe receiving portion 10a. The plate portion 10b is provided with a through screw hole 10c through which the fastening bolt 11 is threaded and penetrated in the perspective direction with respect to the longitudinal bar receiving portion 10a. The fitting member 10 is integrally formed with reinforcing ribs 10d that project outward over the entire area. The formwork supporting arm 9 is a belt-like shape that is integrally bent in a direction away from the vertical bar receiving portion 10a so that the plate surface is vertically vertical from the free end of the plate portion 10b of the fitting member 10. It is comprised from the board 9a.

前記嵌合部材１０は、板部１０ｂの遊端から縦筋受け部１０ａまでの上下巾よりも、縦筋受け部１０ａの上下巾が大きくなった、締結用ボルト１１の軸心に対し上下対称形状のものであって、貫通ネジ孔１０ｃが、補強用リブ１０ｄ内に入り込むバーリング加工を伴っている関係で、補強用リブ１０ｄの上下両側の板巾の不足を補うために、板部１０ｂの上下両側辺には、貫通ネジ孔１０ｃの上下両側において円弧形突出部１０ｅが設けられている。型枠支持用アーム９を構成する帯状板９ａは、嵌合部材１０の縦筋受け部１０ａを除く部分の上下巾よりも更にその上下巾が狭くなったもので、その上側縁９ｂと、嵌合部材１０の縦筋受け部１０ａを除く部分の上側縁１０ｆとは同一高さで連続している。従って、型枠支持用アーム９を構成する帯状板９ａは、嵌合部材１０の上下巾の中心より上側に偏っていることになる。 The fitting member 10 is vertically symmetric with respect to the axis of the fastening bolt 11 in which the vertical width of the vertical bar receiving portion 10a is larger than the vertical width from the free end of the plate portion 10b to the vertical bar receiving portion 10a. In order to compensate for the shortage of the plate width on both the upper and lower sides of the reinforcing rib 10d, the through screw hole 10c is accompanied by a burring process that enters the reinforcing rib 10d. On both the upper and lower sides, arc-shaped protrusions 10e are provided on both upper and lower sides of the through screw hole 10c. The belt-like plate 9a constituting the mold support arm 9 has a narrower vertical width than the vertical width of the portion of the fitting member 10 excluding the vertical bar receiving portion 10a. The upper edge 10f of the portion excluding the vertical bar receiving portion 10a of the combined member 10 is continuous at the same height. Therefore, the belt-like plate 9 a constituting the mold support arm 9 is biased upward from the center of the vertical width of the fitting member 10.

型枠支持部７は、上端が下端より大径の裁頭円錐形の合成樹脂製のコーン７ａと、所定長さの螺軸から成る軸杆１２と、型枠支持用アーム９に設けられた上下方向の軸杆差込み孔１３とから構成されている。コーン７ａは、その中心部に、上下方向に貫通する貫通ネジ孔７ｂを形成する金属製の円筒形インサート７ｃが埋設されたもので、前記軸杆１２の上端螺軸部１２ａが貫通ネジ孔７ａに下端側から着脱自在に螺嵌連結されている。このとき、コーン７ａの下端から突出する軸杆１２の下端突出部１２ｂの長さを一定にするため、所定長さの軸杆１２の上端一定領域にのみネジ溝を加工して、このネジ溝が加工された一定長さの上端螺軸部１２ａだけを貫通ネジ孔７ａ内に螺入出来るようにしても良いが、図示のように全長にわたってネジ溝が加工された螺軸を軸杆１２として使用するときは、貫通ネジ孔７ａ内に螺嵌させる一定長さの上端螺軸部１２ａの下端位置に、それ以上の貫通ネジ孔７ａ内への螺入を阻止するための、ネジ溝を一部分加圧変形させたカシメ部１２ｃを設けておくのが望ましい。 The mold support portion 7 is provided on a truncated cone-shaped synthetic resin cone 7a having a larger diameter at the upper end than the lower end, a shaft rod 12 formed of a screw shaft having a predetermined length, and a mold support arm 9. It is comprised from the axial flange insertion hole 13 of an up-down direction. The cone 7a is formed by embedding a metal cylindrical insert 7c forming a through screw hole 7b penetrating in the vertical direction at the center thereof, and the upper screw portion 12a of the shaft rod 12 is formed through the through screw hole 7a. And is detachably screwed from the lower end side. At this time, in order to make the length of the lower end protruding portion 12b of the shaft rod 12 protruding from the lower end of the cone 7a, a thread groove is processed only in the upper end constant region of the shaft rod 12 having a predetermined length. Only the upper end screw shaft portion 12a having a certain length that has been machined may be screwed into the through screw hole 7a. However, as shown in FIG. When used, a part of a screw groove for preventing further screwing into the through screw hole 7a is provided at the lower end position of the upper end screw shaft portion 12a having a predetermined length to be screwed into the through screw hole 7a. It is desirable to provide a crimped portion 12c that has been deformed under pressure.

軸杆１２のコーン７ａの下端から突出する下端突出部１２ｂは、本体６の型枠支持用アーム９の側部に上下方向に貫通するように設けられた前記軸杆差し込み孔１３に上から差し込まれる。軸杆差し込み孔１３は、型枠支持用アーム９を構成する帯状板９ａに、その長さ方向に沿って設けられた上下２本の切込みの間の板部を片側に突曲させた、帯状板９ａの上下巾の中心に位置する突曲板部１３ａと、この突曲板部１３ａの上下両側の前記帯状板９ａの平坦板部１３ｂ，１３ｃとで構成されている。前記軸杆１２の下端突出部１２ｂは、帯状板９ａの上下巾とほぼ等しい長さになっており、この軸杆１２の下端突出部１２ｂを軸杆差し込み孔１３に上から下向きに差し込んで、コーン７ａの下端を型枠支持用アーム９（帯状板９ａ）の上側縁９ｂに支持させたとき、当該軸杆１２の下端突出部１２ｂは、前記突曲板部１３ａの上下両側の、前記帯状板９ａの平坦板部１３ｂ，１３ｃに隣接することになる。 A lower end protruding portion 12b protruding from the lower end of the cone 7a of the shaft rod 12 is inserted from above into the shaft rod insertion hole 13 provided so as to penetrate the side portion of the mold support arm 9 of the main body 6 in the vertical direction. It is. The shaft insertion hole 13 is a belt-like plate formed by bending a plate portion between two upper and lower cuts provided along the length direction of the belt-like plate 9a constituting the mold support arm 9 to one side. The bent plate portion 13a is located at the center of the vertical width of the plate 9a, and the flat plate portions 13b and 13c of the belt-like plate 9a on both upper and lower sides of the bent plate portion 13a. The lower end protruding portion 12b of the shaft rod 12 has a length substantially equal to the vertical width of the belt-like plate 9a, and the lower end protruding portion 12b of the shaft rod 12 is inserted into the shaft rod insertion hole 13 downward from above. When the lower end of the cone 7a is supported on the upper edge 9b of the mold support arm 9 (band plate 9a), the lower end protruding portion 12b of the shaft 12 has the band shape on both the upper and lower sides of the bent plate portion 13a. Adjacent to the flat plate portions 13b and 13c of the plate 9a.

尚、型枠支持用アーム９を構成する帯状板９ａの上下両側辺には、軸杆差し込み孔１３が形成される側（突曲板部１３ａのある側）とは反対側で斜めに折曲する折曲側辺部９ｃ，９ｄが、帯状板９ａの全長域にわたって形成されている。従って、コーン７ａの下端は、上側の折曲側辺部９ｃの上側縁９ｂで支持されることになる。この折曲側辺部９ｃ，９ｄは、直角に折曲されるものであっても良いし、軸杆差し込み孔１３が形成される側（突曲板部１３ａのある側）に折曲されるものであっても良い。又、帯状板９ａの上下両側辺の内の一方にのみ折曲側辺部９ｃ／９ｄを形成させても良い。帯状板９ａに、軸杆差し込み孔１３が形成される側（突曲板部１３ａのある側）に折曲された折曲側辺部を形成させるときは、帯状板９ａの上下両側辺に折曲側辺部９ｃ，９ｄを設け、軸杆差し込み孔１３に軸杆１２の下端突出部１２ｂを差し込んだとき、当該軸杆１２の下端突出部１２ｂが、上下両折曲側辺部９ｃ，９ｄに隣接するように、軸杆差し込み孔１３の位置を定めなければならない。この場合は、軸杆差し込み孔１３が、突曲板部１３ａと上下両折曲側辺部９ｃ，９ｄによって形成されていることになる。 It should be noted that the upper and lower sides of the belt-like plate 9a constituting the mold support arm 9 are bent obliquely on the side opposite to the side where the shaft insertion hole 13 is formed (the side where the bent plate portion 13a is provided). The bent side portions 9c and 9d are formed over the entire length of the belt-like plate 9a. Therefore, the lower end of the cone 7a is supported by the upper edge 9b of the upper bent side part 9c. The bent side portions 9c and 9d may be bent at a right angle or bent to the side where the shaft insertion hole 13 is formed (the side where the bent plate portion 13a is provided). It may be a thing. Further, the bent side portions 9c / 9d may be formed only on one of the upper and lower sides of the belt-like plate 9a. When the belt-like plate 9a is formed with bent side portions that are bent on the side where the shaft flange insertion hole 13 is formed (the side with the bent plate portion 13a), it is folded on both the upper and lower sides of the belt-like plate 9a. When the bent side portions 9c and 9d are provided, and the lower end protruding portion 12b of the shaft rod 12 is inserted into the shaft rod insertion hole 13, the lower end protruding portion 12b of the shaft rod 12 is bent into the upper and lower bent side portions 9c and 9d. The position of the shaft rod insertion hole 13 must be determined so as to be adjacent to. In this case, the shaft rod insertion hole 13 is formed by the bent plate portion 13a and the upper and lower bent side portions 9c and 9d.

上記構成の型枠浮かし支持具１は、型枠支持用アーム９の軸杆差し込み孔１３に、コーン７ａの下端から突出する軸杆１２の下端突出部１２ｂを上から下向きに差し込んで、コーン７ａの下端を、型枠支持用アーム９（帯状板９ａ）の上側縁９ｂに載置支持させた状態で使用される。即ち、取付け部８の嵌合部材１０を縦筋２に横から嵌合し、縦筋２に嵌合部材１０の縦筋受け部１０ａを外嵌させた状態で、締結用ボルト１１を捻じ込んで、この締結用ボルト１１の先端と嵌合部材１０の縦筋受け部１０ａとの間で縦筋２を挟み込むことにより、縦筋２の所定高さに取り付けられるものであるが、その縦筋２に対する型枠浮かし支持具１の取り付け高さは、浮かし型枠５の下端高さからコーン７ａの高さ分を差し引いた高さで、縦筋２に目印線を印しておき、嵌合部材１０の、縦筋受け部１０ａを除く部分の上側縁１０ｆを前記目印線に合わせることによって決めることが出来る。又、縦筋２に型枠浮かし支持具１を取り付けるとき、締結用ボルト１１を完全に締め付ける前に、縦筋２に対する型枠支持用アーム９の向きを定める。 The mold floating support 1 having the above-described structure is inserted into the shaft rod insertion hole 13 of the mold support arm 9 by inserting the lower end protruding portion 12b of the shaft rod 12 protruding from the lower end of the cone 7a downward from above. Is used in a state in which the lower end is placed and supported on the upper edge 9b of the formwork supporting arm 9 (band plate 9a). That is, the fitting member 10 of the mounting portion 8 is fitted to the vertical bar 2 from the side, and the fastening bolt 11 is screwed in a state where the vertical bar 2 is fitted with the vertical bar receiving portion 10a of the fitting member 10. Thus, the vertical bar 2 is attached to a predetermined height by sandwiching the vertical bar 2 between the tip of the fastening bolt 11 and the vertical bar receiving portion 10a of the fitting member 10. 2 is a height obtained by subtracting the height of the cone 7a from the lower end height of the floating formwork 5, and a mark line is marked on the vertical streak 2 and fitted. It can be determined by aligning the upper edge 10f of the portion of the member 10 excluding the vertical line receiving portion 10a with the mark line. In addition, when the formwork floating support 1 is attached to the vertical bars 2, the direction of the mold support arms 9 with respect to the vertical bars 2 is determined before the fastening bolts 11 are completely tightened.

即ち、図１Ｂに仮想線で示すように、浮かし型枠５が所定位置に配置されていると仮定した状態で、そのコンクリート型枠５の水平長さ方向に対して直角水平向きで且つ縦筋２と交差する仮想線上にコーン７ａが位置するように、縦筋２に対する型枠支持用アーム９の向きを定めたときが、縦筋２とコーン７ａとの間の、コンクリート型枠５の長さ方向に対して直角向きの水平距離Ｌが最大になり、これより型枠支持用アーム９を縦筋２の周りに水平に回転させることにより、当該水平距離Ｌが縮小することになるので、所定位置に配置されていると仮定した浮かし型枠５と縦筋２との間の水平距離に応じて、型枠支持用アーム９の向きを調整し、浮かし型枠５の真下に相当する位置にコーン７ａを位置させた状態で、締結用ボルト１１を完全に締め付けて、型枠浮かし支持具１を縦筋２に固定する。このようにして縦筋２に型枠浮かし支持具１を取り付けたならば、浮かし型枠５を所定位置に配置して、前記型枠浮かし支持具１のコーン７ａ上に当該コンクリート型枠５を載置支持させる。 That is, as shown by the phantom line in FIG. 1B, in a state where the floating form 5 is assumed to be disposed at a predetermined position, the vertical form is in a horizontal direction perpendicular to the horizontal length direction of the concrete form 5. When the orientation of the formwork support arm 9 with respect to the longitudinal bars 2 is determined so that the cone 7a is positioned on the imaginary line intersecting 2, the length of the concrete formwork 5 between the longitudinal bars 2 and the cone 7a Since the horizontal distance L perpendicular to the vertical direction is maximized, the horizontal distance L is reduced by rotating the formwork support arm 9 horizontally around the vertical bars 2. The orientation of the mold support arm 9 is adjusted in accordance with the horizontal distance between the floating mold 5 and the vertical bars 2 that are assumed to be arranged at a predetermined position, and the position corresponding to just below the floating mold 5 With the cone 7a positioned on the fastening bolt 11, To be tightened, mold floated to fix the support 1 to the vertical stripe 2. When the formwork floating support 1 is attached to the vertical bars 2 in this way, the floating formwork 5 is placed at a predetermined position, and the concrete formwork 5 is placed on the cone 7a of the formwork floating support 1. Place and support.

床版構築用のコンクリート打設空間３及び立上り壁構築用のコンクリート打設空間４内に配筋してコンクリートを打設し、所定期間の養生後に浮かし型枠５を解体除去するのであるが、浮かし型枠５の下端面と同一レベルに表面が仕上げられる床版の表面には、浮かし型枠５の下端面相当位置にコーン７ａの上端が露出しているので、このコーン７ａを、軸杆１２の上端螺軸部１２ａに対するネジ戻し方向に回転操作して軸杆１２から除去すれば、床版の表面に、コーン７ａの除去跡である裁頭円錐形の、底面から軸杆１２の上端螺軸部１２ａが突出している凹部が残ることになる。この凹部内にモルタルを充填して塞ぐことにより、床版の表面の仕上げが完了する。このようにして構築した床版には、金属板から成る型枠支持用アーム９（帯状板９ａ）に対して、コーン７ａの高さ分だけのコンクリートの被り厚さが確保される。 The concrete is placed in the concrete placement space 3 for constructing the floor slab and the concrete placement space 4 for constructing the rising wall, and concrete is placed. After curing for a predetermined period, the floating form 5 is disassembled and removed. Since the upper end of the cone 7a is exposed at the position corresponding to the lower end surface of the floating mold 5 on the surface of the floor slab whose surface is finished at the same level as the lower end surface of the floating mold 5, the cone 7a is If the screw 12 is rotated in the screw return direction with respect to the top screw shaft portion 12a and removed from the shaft ridge 12, the upper end of the shaft ridge 12 is formed on the surface of the floor slab from the bottom surface of the frustoconical shape that is the removal mark of the cone 7a The recessed part from which the screw shaft part 12a protrudes remains. Finishing the surface of the floor slab is completed by filling the recess with mortar. In the floor slab constructed in this manner, a concrete covering thickness corresponding to the height of the cone 7a is secured with respect to the mold supporting arm 9 (band plate 9a) made of a metal plate.

尚、型枠支持用アーム９（帯状板９ａ）に設けられる軸杆差し込み孔１３は、図４に示すように、型枠支持用アーム９（帯状板９ａ）の側面に、溶接などにより固着された筒状部材１４の中央貫通孔で構成することも出来る。この場合、筒状部材１４として長尺ナットを利用すれば、その中央貫通孔（軸杆差し込み孔１３）が上下方向に貫通したネジ孔となるので、軸杆１２のコーン７ａの下端から突出する下端突出部１２ｂも螺軸として、その下端突出部１２ｂを軸杆差し込み孔１３内に螺嵌して、コーン７ａを強固に取り付けることが出来る。 As shown in FIG. 4, the shaft insertion hole 13 provided in the mold support arm 9 (strip plate 9a) is fixed to the side surface of the mold support arm 9 (strip plate 9a) by welding or the like. It can also be configured by a central through hole of the cylindrical member 14. In this case, if a long nut is used as the cylindrical member 14, the central through hole (shaft insertion hole 13) becomes a screw hole penetrating in the vertical direction, and thus protrudes from the lower end of the cone 7 a of the shaft 12. The lower end projecting portion 12b is also a screw shaft, and the lower end projecting portion 12b is screwed into the shaft insertion hole 13 so that the cone 7a can be firmly attached.

更に、図１〜図４に示す実施例では、型枠支持用アーム９を構成する帯状板９ａの上下巾を出来る限り狭くして、材料節減を図っているが、図５に示すように、前記帯状板９ａの上下巾を嵌合部材１０の縦筋受け部１０ａを除く部分の上下巾と等しくし、嵌合部材１０の板部１０ｂをそのまま延長させて折曲することにより、型枠支持用アーム９を構成させることも可能である。この構成では、帯状板９ａの下側縁９ｅと、嵌合部材１０の縦筋受け部１０ａを除く部分の下側縁１０ｇとが、上側縁９ｂ，１０ｆと同様に、同一高さで連続することになるので、型枠浮かし支持具１を上下反転させて、縦筋２に対し嵌合部材１０を反対側から嵌合させて使用した場合も、縦筋２に対する型枠浮かし支持具１の取付け高さの決定などを同じように行うことが出来る。又、図示省略しているが、型枠支持用アーム９には、軸杆差し込み孔１３を帯状板９ａの長さ方向適当間隔おきに複数設けて、使用状態でのコーン７ａと縦筋２との間の間隔を複数段に変更出来るように構成することも出来る。 Furthermore, in the embodiment shown in FIGS. 1 to 4, the vertical width of the belt-like plate 9 a constituting the mold support arm 9 is made as narrow as possible to reduce the material, but as shown in FIG. The width of the belt-like plate 9a is made equal to the vertical width of the portion excluding the vertical bar receiving portion 10a of the fitting member 10, and the plate portion 10b of the fitting member 10 is extended as it is and bent to support the formwork. The arm 9 can also be configured. In this configuration, the lower edge 9e of the belt-like plate 9a and the lower edge 10g of the fitting member 10 excluding the vertical line receiving portion 10a are continuous at the same height, like the upper edges 9b and 10f. Therefore, even when the mold floating support 1 is turned upside down and the fitting member 10 is fitted to the vertical bars 2 from the opposite side, the mold floating support 1 of the vertical bars 2 is used. The installation height can be determined in the same way. Although not shown, the arm 9 for supporting the formwork is provided with a plurality of shaft hole insertion holes 13 at appropriate intervals in the length direction of the strip 9a. It is also possible to configure so that the interval between can be changed to a plurality of stages.

本発明の型枠浮かし支持具は、床版と、この床版から立ち上がる立上り壁部とを一体に構築する場合に、当該立上り壁部構築用のコンクリート型枠の下端を、床版構築用のコンクリート打設空間内から立上り壁構築用のコンクリート打設空間内に向かって配筋されている縦筋に支持させる手段として活用出来る。 The formwork floating support of the present invention, when the floor slab and the rising wall part rising from the floor slab are constructed integrally, the lower end of the concrete formwork for the rising wall part construction is It can be used as a means for supporting the vertical bars arranged from the concrete placement space toward the concrete placement space for the rising wall construction.

１型枠浮かし支持具
２縦筋
３床版構築用のコンクリート打設空間
４立上り壁構築用のコンクリート打設空間
５立上り壁構築用のコンクリート型枠（浮かし型枠）
６型枠浮かし支持具の本体
７型枠支持部
７ａ合成樹脂製コーン
７ｂ貫通ネジ孔
７ｃ円筒形インサート
８本体の取付け部
９本体の型枠支持用アーム
９ａ帯状板
９ｂ上側縁
９ｃ，９ｄ折曲側辺部
９ｅ下側縁
１０嵌合部材
１０ａ縦筋受け部
１０ｂ板部
１０ｃ貫通ネジ孔
１０ｄ補強用リブ
１０ｅ円弧形突出部
１０ｆ上側縁
１０ｇ下側縁
１１締結用ボルト
１２軸杆
１２ａ軸杆の上端螺軸部
１２ｂカシメ部
１２ｃ軸杆の下端突出部
１３軸杆差し込み孔
１３ａ突曲板部
１３ｂ，１３ｃ平坦板部
１４筒状部材
DESCRIPTION OF SYMBOLS 1 Formwork floating support 2 Vertical reinforcement 3 Concrete placement space for floor slab construction 4 Concrete placement space for rising wall construction 5 Concrete formwork for rising wall construction (floating formwork)
6 Main body of formwork floating support 7 Formwork support part 7a Synthetic resin cone 7b Through screw hole 7c Cylindrical insert 8 Main body attachment part 9 Main body formwork support arm 9a Strip plate 9b Upper edge 9c, 9d Bending Side part 9e Lower edge 10 Fitting member 10a Vertical bar receiving part 10b Plate part 10c Through screw hole 10d Reinforcing rib 10e Arc-shaped protruding part 10f Upper edge 10g Lower edge 11 Fastening bolt 12 Shaft 12a Shaft Upper end screw shaft portion 12b caulking portion 12c lower end protrusion portion of shaft rod 13 shaft rod insertion hole 13a bent plate portion 13b, 13c flat plate portion 14 cylindrical member

Claims

A mounting portion of the reinforcing bars, and the arm horizontally continuously provided by formwork support from this mounting portion, consists of a formwork support portion provided in the mold supporting arm, the mold frame supporting portion, the shaft A hook, a synthetic resin cone that is detachably screwed into the upper end portion of the shaft rod, and whose upper end is larger in diameter than the lower end, and a vertical shaft shaft insertion hole provided in the mold support arm. And a mold floating support that is formed by inserting a shaft rod lower end protruding from the lower end of the cone downward into the shaft insertion hole and supporting the lower end of the cone on the upper side of the mold support arm. In
The formwork support arm is constituted by a belt-like plate continuously provided from the mounting portion so that the plate surface is vertically oriented, and the shaft flange insertion hole extends along the length direction of the belt-like plate. A mold floating support that is configured on the inner side of a bent plate portion that bends to one side between two upper and lower cuts provided .

The attachment portion is turned upside down so that the fitting member that can be fitted from both the left and right sides with respect to the vertical stripe in the vertical direction and the fastening member that presses and fixes the vertical stripe fitted in the fitting member. The mold support arm is formed of a belt-like plate integrally connected from the fitting member so that the plate surface is vertically oriented, and the shaft flange insertion hole is formed of the belt-like plate. The shaft is penetrating in the vertical direction on one side, so that the shaft rod can be inserted from either the upper or lower side of the belt-like plate, and the lower end of the cone is supported by a side edge on the upper side of the belt-like plate. Item 2. A form-lifting support according to Item 1.

The mounting portion includes a fitting member that can be fitted to the vertical bars in the vertical direction from the side, and a fastening bolt that presses and fixes the vertical bars fitted in the fitting members. The arm for use is composed of a strip-like plate integrally connected from the fitting member so that the plate surface is vertically oriented, and the planar shape of the fitting member that is externally fitted to the vertical stripe is V. The vertical bar receiving portion recessed in the letter shape has a vertical height greater than the vertical width of the band plate constituting the mold support arm, and the band plate and the vertical bar receiving portion of the fitting member 3. The formwork support according to claim 1 , wherein an upper edge between the two is flush with an upper edge of the belt-like plate that supports the cone .

The formwork support arm is composed of a belt-like plate whose plate surface is vertically oriented. At least one of the upper and lower sides of the belt-like plate is folded to one side over the entire length of the belt-like plate. The formwork floating support according to any one of claims 1 to 3, wherein a curved side portion is provided .