JP6632806B2 - Formwork structure - Google Patents

Formwork structure Download PDF

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JP6632806B2
JP6632806B2 JP2015063868A JP2015063868A JP6632806B2 JP 6632806 B2 JP6632806 B2 JP 6632806B2 JP 2015063868 A JP2015063868 A JP 2015063868A JP 2015063868 A JP2015063868 A JP 2015063868A JP 6632806 B2 JP6632806 B2 JP 6632806B2
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thick
weir
weir plate
plate
thick material
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JP2016183482A (en
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田中 秀宣
秀宣 田中
久美子 増田
久美子 増田
郁実 上霜
郁実 上霜
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Senqcia Corp
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Description

本発明は、端太材の断面積を小さくすることが可能な型枠構造に関するものである。   TECHNICAL FIELD The present invention relates to a mold structure capable of reducing the cross-sectional area of a thick member.

従来から、コンクリートの構造物を施工する際には、型枠構造を構築し、型枠内にコンクリートを打設する方法が採られている。型枠構造としては、例えば、一対のせき板が対向して配置され、せき板同士の間隔を保持するためのセパレータによってせき板同士が連結されて用いられる。このせき板同士の間に、コンクリートを打設することで、コンクリートの構造物が構築される。   BACKGROUND ART Conventionally, when constructing a concrete structure, a method of constructing a formwork structure and pouring concrete into the formwork has been adopted. As the mold structure, for example, a pair of weir plates are arranged to face each other, and the weir plates are used by being connected to each other by a separator for maintaining an interval between the weir plates. A concrete structure is constructed by placing concrete between the weirs.

通常、せき板の外面には、水平方向に端太材が所定間隔で固定されて用いられる。端太材は、せき板を背面から支持するものであり、せき板の変形等を抑制するものである。このような端太材としては、例えば、丸鋼管や角鋼管が用いられている(例えば特許文献1)。   Usually, thick ends are fixed at predetermined intervals in the horizontal direction on the outer surface of the weir. The end brace supports the weir board from the back and suppresses the deformation of the weir board. For example, a round steel pipe or a square steel pipe is used as such a thick material (for example, Patent Document 1).

特開2011−184951号公報JP 2011-184951 A

図7は、従来の型枠構造100を示す斜視図である。一対の鋼製のせき板103が隙間をあけて対向するように配置される。せき板103同士の間が、コンクリートを打設する部位となる。   FIG. 7 is a perspective view showing a conventional mold structure 100. As shown in FIG. A pair of steel dams 103 are arranged so as to face each other with a gap. The space between the weirs 103 serves as a part for placing concrete.

せき板103同士は、セパレータ109によって所定の間隔で連結される。セパレータ109によって、コンクリートが打設された際に、せき板103が広げられることを抑制することができる。   The weirs 103 are connected at predetermined intervals by a separator 109. The separator 109 can suppress the spread of the weir plate 103 when concrete is cast.

せき板103の外面側には、略水平方向に端太材105が配置される。端太材105は、例えば図示した様な丸鋼管である。端太材105は、せき板103に対して、所定の間隔で固定部材107によって固定される。端太材105によって、コンクリートを打設した際に、せき板103が過剰に変形することを防止することができる。   On the outer surface side of the weir 103, a thick end member 105 is arranged in a substantially horizontal direction. The end material 105 is, for example, a round steel pipe as illustrated. The thick end member 105 is fixed to the weir plate 103 by a fixing member 107 at a predetermined interval. The end material 105 can prevent the dam 103 from being excessively deformed when concrete is poured.

ここで、鋼製のせき板を用いる場合には、コンクリートを打設した後、せき板103等をそのまま利用することもできる。このようにすることで、型枠構造100を分解する工数を削減することができるため、工期を短縮することができる。   Here, when using a steel dam, after damping concrete, the dam 103 etc. can be used as it is. By doing so, the number of steps for disassembling the formwork structure 100 can be reduced, so that the work period can be shortened.

しかし、せき板103を背面から支持する端太材105は、コンクリートを打設した際にせき板103を支持するのに必要な強度が必要となることから、この必要な強度を確保するために必要なサイズ以上のものを採用する必要がある。   However, the thick end members 105 that support the weir 103 are required to have the strength necessary to support the weir 103 when the concrete is cast. It is necessary to adopt a size larger than the required size.

図8(a)は、せき板103と端太材105のコンクリートを打設する前の状態の平面図である。せき板103と端太材105は、ともにまっすぐに配置され、端太材105は、せき板103の外面に接触した状態となる。   FIG. 8A is a plan view of a state before the concrete of the weir board 103 and the thick end piece 105 is cast. The weir 103 and the thick material 105 are both arranged straight, and the thick material 105 comes into contact with the outer surface of the weir 103.

この状態からせき板103の間にコンクリートを打設すると、図8(b)に示すように、内面からコンクリートの圧力が付与される(図中矢印G)。このため、せき板103がコンクリートによって変形し、これに伴い、端太材105も変形する。   When concrete is poured between the dams 103 in this state, concrete pressure is applied from the inner surface as shown in FIG. 8B (arrow G in the figure). For this reason, the weir board 103 is deformed by the concrete, and accordingly, the thick end member 105 is also deformed.

ここで、所定の間隔で配置される固定部材107同士の間においては、端太材105とせき板103とは、接触しているのみである。このため、両者の接触部では、端太材105の長手方向(水平方向であって図中J方向)に対して、互いに相対的なずれを生じる。この結果、端太材105とせき板103とは、別々に変形することになる。したがって、端太材105の中立軸に対して外周面側(図中K)は引張変形となり、中立軸に対して内周面側(図中L)は圧縮変形となる。同様に、せき板103の中立軸に対して外周面側(図中M)は引張変形となり、中立軸に対して内周面側(図中N)は圧縮変形となる。   Here, between the fixing members 107 arranged at predetermined intervals, the thick end member 105 and the weir plate 103 are only in contact with each other. For this reason, in the contact portions of both, relative displacement occurs in the longitudinal direction (horizontal direction and J direction in the drawing) of the thick material 105. As a result, the end material 105 and the weir 103 are separately deformed. Therefore, the outer peripheral surface side (K in the figure) of the thick shaft 105 undergoes tensile deformation on the neutral axis, and the inner peripheral surface side (L in the figure) of the neutral axis undergoes compression deformation on the neutral axis. Similarly, the outer peripheral surface side (M in the figure) with respect to the neutral axis of the weir plate 103 undergoes tensile deformation, and the inner peripheral surface side (N in the figure) with respect to the neutral axis undergoes compressive deformation.

このように、せき板103が受けた応力が、端太材105に対して効率よく伝達されないため、せき板103の変形を確実に抑制するためには、端太材105には、大きな断面二次係数が必要となる。例えば、図で示したK+Lのサイズの端太材105が必要となる。   As described above, since the stress received by the weir 103 is not efficiently transmitted to the thick member 105, in order to surely suppress the deformation of the weir 103, a large cross-section The following coefficient is required. For example, a thick material 105 having a size of K + L shown in the drawing is required.

しかし、サイズの大きな端太材105を用いると、施工時の作業性が悪く、コスト増ともなる。また、型枠構造100をそのまま利用する場合には、端太材105のサイズだけ、余計に空間を取る必要がある。   However, the use of a large-sized thick member 105 results in poor workability at the time of construction and increases costs. When the formwork structure 100 is used as it is, it is necessary to take extra space by the size of the thick end member 105.

本発明は、このような問題に鑑みてなされたもので、端太材のサイズを小さくすることが可能な型枠構造を提供することを目的とする。   The present invention has been made in view of such a problem, and an object of the present invention is to provide a formwork structure capable of reducing the size of a thick material.

前述した目的を達成するため、の発明は、コンクリート構造体を打設するための型枠構造であって、鋼製の一対のせき板と、前記せき板の外面に、略水平方向に設けられる鋼製の端太材と、前記端太材を前記せき板に所定の間隔で固定する固定部材と、を具備し、前記固定部材同士の間における前記せき板と前記端太材との接触部に、ずれ止め構造が設けられ、前記ずれ止め構造は、前記端太材の一部が、前記せき板の一部に食い込むことで、コンクリートを打設して前記せき板が変形した際に、前記端太材の長手方向に対する、前記せき板と記端太材との相対的なずれが抑制されることを特徴とする型枠構造である。 In order to achieve the above-mentioned object, a first invention is a formwork structure for casting a concrete structure, comprising a pair of steel-made weirs and an outer surface of the weirs in a substantially horizontal direction. A thick steel member provided, and a fixing member for fixing the thick member to the weir at a predetermined interval, comprising: a cuff plate and the thick material between the fixing members. The contact portion is provided with a slip-stop structure, and the slip-stop structure is configured such that when a part of the thick material cuts into a part of the weir, concrete is poured and the weir is deformed. In addition, there is provided a formwork structure characterized in that relative displacement between the weir board and the thick end piece in the longitudinal direction of the thick end piece is suppressed.

この場合、前記端太材は、L字状断面のアングルであり、前記アングルの縁部が前記せき板と接触し、前記ずれ止め構造は、前記アングルの縁部が、前記せき板の一部に食い込むことで、前記せき板と前記端太材との相対的なずれが抑制されてもよい。   In this case, the end thick member is an angle having an L-shaped cross section, an edge of the angle is in contact with the weir plate, and the slip prevention structure is such that the edge of the angle is a part of the weir plate. The relative displacement between the weir plate and the thick end piece may be suppressed by biting into the groove.

の発明は、コンクリート構造体を打設するための型枠構造であって、鋼製の一対のせき板と、前記せき板の外面に、略水平方向に設けられる鋼製の端太材と、前記端太材を前記せき板に所定の間隔で固定する固定部材と、を具備し、前記固定部材同士の間における前記せき板と前記端太材との接触部に、ずれ止め構造が設けられ、前記ずれ止め構造は、前記端太材と前記せき板とが、溶接または接着によって接合されることで、コンクリートを打設して前記せき板が変形した際に、前記端太材の長手方向に対する、前記せき板と前記端太材との相対的なずれが抑制されることを特徴とする型枠構造である。
の発明は、コンクリート構造体を打設するための型枠構造であって、鋼製の一対のせき板と、前記せき板の外面に、略水平方向に設けられる鋼製の端太材と、前記端太材を前記せき板に所定の間隔で固定する固定部材と、を具備し、前記固定部材同士の間における前記せき板と前記端太材との接触部に、ずれ止め構造が設けられ、コンクリートを打設して前記せき板が変形した際に、前記端太材の長手方向に対する、前記せき板と前記端太材との相対的なずれが抑制され、前記せき板は、断面が波形状を有しており、前記端太材には、所定の間隔で切欠きが形成され、前記ずれ止め構造は、前記端太材の前記切欠きが前記せき板の波形状の凹凸形状と嵌合することで、前記せき板と前記端太材との相対的なずれが抑制されることを特徴とする型枠構造である。
A second invention is a formwork structure for casting a concrete structure, comprising a pair of steel-made weirs, and a steel thick bar provided on an outer surface of the weirs in a substantially horizontal direction. And a fixing member for fixing the thick material to the weir at predetermined intervals, and a contact preventing portion between the weir and the thick material between the fixing members has a slip prevention structure. The slip prevention structure is provided, wherein the thick material and the weir board are joined by welding or bonding, so that when the concrete is cast and the weir board is deformed, A formwork structure characterized in that relative displacement between the weir plate and the thick end member in a longitudinal direction is suppressed.
A third invention is a formwork structure for casting a concrete structure, comprising a pair of steel-made dams, and a steel end member provided in a substantially horizontal direction on an outer surface of the dams. And a fixing member for fixing the thick material to the weir at predetermined intervals, and a contact preventing portion between the weir and the thick material between the fixing members has a slip prevention structure. Provided, when the concrete is cast and the cuff is deformed, relative displacement between the cuff and the cuff relative to the longitudinal direction of the cuff is suppressed, and the cuff is provided by: The cross section has a wavy shape, notches are formed at predetermined intervals in the thick material, and the slip prevention structure is characterized in that the notch of the thick material has a wavy shape of the weir plate. By fitting with the shape, the relative displacement between the weir plate and the end thick material is suppressed, It is that the mold structure.

本発明によれば、せき板と端太材との接触部に、ずれ止め構造が設けられる。このため、せき板と端太材とがずれにくく、せき板と端太材とを一体で変形させることができる。この結果、せき板と端太材との応力伝達効率が高く、端太材を小型にしても、十分な強度を確保することができる。また、端太材とせき板の材質を同一の材質とすることで、両者の弾性係数が等しくなり、端太材とせき板とを確実に一体で変形させることができる。 ADVANTAGE OF THE INVENTION According to this invention, a slip-off prevention structure is provided in the contact part of a weir and a thick material. For this reason, the crest plate and the thick material are unlikely to be displaced, and the cough plate and the thick material can be integrally deformed. As a result, the stress transmission efficiency between the weir and the thick material is high, and sufficient strength can be ensured even if the thick material is reduced in size. In addition, by using the same material for the thick material and the weir plate, the elastic coefficients of both materials are equal, and the thick material and the weir plate can be reliably deformed integrally.

例えば、端太材の一部をせき板の一部に食い込ませることで、せき板と端太材との相対的なずれを抑制することができる。この場合、端太材をL字状断面のアングルとして、アングルの縁部をせき板に接触させることで、コンクリートを打設した際に、アングルの縁部をせき板の一部に食い込ませることができる。   For example, by causing a part of the thick member to bite into a part of the weir plate, it is possible to suppress a relative displacement between the weir plate and the thick member. In this case, the edge of the angle is cut into a part of the weir when the concrete is cast by making the edge of the lumber into an angle of L-shaped cross section and contacting the edge of the angle with the weir. Can be.

また、端太材とせき板の少なくとも一方に、粗面化処理を施すことで、端太材とせき板との摩擦係数を増加させることができる。このため、せき板と端太材との相対的なずれを抑制することができる。   In addition, by subjecting at least one of the thickened material and the weir plate to a roughening treatment, the coefficient of friction between the thickened material and the weir plate can be increased. For this reason, it is possible to suppress the relative displacement between the weir plate and the thick end member.

また、せき板の外面に、略水平方向に端太材の外形に応じた溝を形成し、端太材を溝に嵌めこむように配置することで、せき板と端太材との相対的なずれを抑制することもできる。   Also, a groove is formed on the outer surface of the weir plate in a substantially horizontal direction according to the outer shape of the weed material, and the weft material is arranged so as to be fitted into the groove, so that the relative height between the weir plate and the weed material is increased. The displacement can also be suppressed.

また、端太材とせき板とを溶接または接着によって接合することで、せき板と端太材との相対的なずれを抑制することもできる。
また、端太材に、所定の間隔で切欠きが形成され、せき板の波形状の凹凸形状と嵌合することで、せき板と端太材との相対的なずれを抑制することもできる。
Further, by joining the thick member and the cuff plate by welding or bonding, the relative displacement between the cuff plate and the thick member can be suppressed.
In addition, notches are formed at predetermined intervals in the thick material, and by fitting with the corrugated unevenness of the weir, the relative displacement between the weir and the thick material can be suppressed. .

本発明によれば、端太材のサイズを小さくすることが可能な型枠構造を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the formwork structure which can reduce the size of a thick material can be provided.

型枠構造1を示す斜視図。FIG. 1 is a perspective view showing a mold structure 1. 型枠構造1の部分側面図であって、ずれ止め構造11を示す図。FIG. 2 is a partial side view of the formwork structure 1, showing a slip prevention structure 11. (a)は型枠構造の変形前の状態を示す図、(b)は型枠構造の変形状態を示す図。(A) is a figure which shows the state before the deformation of a mold structure, (b) is a figure which shows the deformation state of a mold structure. ずれ止め構造11aを示す図。The figure which shows the slip prevention structure 11a. ずれ止め構造11bを示す図。The figure which shows the slip prevention structure 11b. (a)は端太材5cの斜視図、(b)は、ずれ止め構造11cを示す図。(A) is a perspective view of the thick end member 5c, (b) is a diagram showing a slip prevention structure 11c. 従来の型枠構造100を示す斜視図。FIG. 9 is a perspective view showing a conventional mold structure 100. (a)は従来の型枠構造の変形前の状態を示す図、(b)は従来の型枠構造の変形状態を示す図。(A) is a figure which shows the state before the deformation of the conventional mold structure, (b) is a figure which shows the deformation state of the conventional mold structure.

以下、本発明の実施の形態にかかる型枠構造1について説明する。図1は、型枠構造1を示す斜視図である。型枠構造1は、一対のせき板3、端太材5、固定部材7、セパレータ9等から構成される。   Hereinafter, the mold structure 1 according to the embodiment of the present invention will be described. FIG. 1 is a perspective view showing the formwork structure 1. The formwork structure 1 includes a pair of dams 3, a thick end piece 5, a fixing member 7, a separator 9, and the like.

一対のせき板3は、隙間をあけて互いに対向するように配置される。せき板3同士の間が、コンクリートが打設される部位となる。なお、せき板3は、図示した様な波形状を有していてもよく、平板状であってもよい。   The pair of dams 3 are arranged to face each other with a gap. The space between the weirs 3 is where the concrete is to be poured. In addition, the weir plate 3 may have a corrugated shape as illustrated, or may be a flat plate shape.

せき板3同士は、セパレータ9によって所定間隔で連結される。セパレータ9は、例えば固定部材7に固定される。セパレータ9によって、せき板3同士の間にコンクリートを打設した際に、せき板3が広げられることを防止し、所定の間隔を維持することができる。   The weirs 3 are connected to each other at predetermined intervals by a separator 9. The separator 9 is fixed to the fixing member 7, for example. The separator 9 prevents the spread of the weir board 3 when concrete is poured between the weir boards 3, and can maintain a predetermined interval.

一対のせき板3の外面には、略水平方向に、それぞれ端太材5が配置される。端太材5は、固定部材7によって所定間隔でせき板3に固定される。端太材5は、断面が略L字状のアングル部材である。   On the outer surfaces of the pair of weir plates 3, thick end members 5 are arranged in a substantially horizontal direction. The thick end members 5 are fixed to the dam 3 at predetermined intervals by a fixing member 7. The thick end member 5 is an angle member having a substantially L-shaped cross section.

本発明では、端太材5とせき板3とのずれ止め構造が形成される。図2は、図1のA部の拡大図であり、ずれ止め構造11を示す図である。前述した様に、端太材5は、略L字状のアングル部材である。このため、端太材5は、略中央に山形の屈曲部を有し、屈曲部から縁部6までの間がそれぞれ平面形状となる。   In the present invention, a structure for preventing displacement of the thick end member 5 and the weir plate 3 is formed. FIG. 2 is an enlarged view of a portion A in FIG. As described above, the thick end member 5 is a substantially L-shaped angle member. For this reason, the thick end member 5 has a chevron-shaped bent portion substantially at the center, and the portion from the bent portion to the edge 6 has a planar shape.

本実施形態では、アングル部材の縁部6がせき板3と接触するように配置される。すなわち、アングル部材の山部が外方に向くように、端太材5が配置される。縁部6とせき板3とは、略点接触となるため、せき板3に端太材5を押し付けると、極めて大きな面圧となる。このため、端太材5と接触するせき板3の一部が変形し、端太材5の縁部6がせき板3の一部に食い込む。すなわち、せき板3の一部に、端太材5の食い込み部13が形成される。   In the present embodiment, the edge 6 of the angle member is arranged so as to be in contact with the weir plate 3. That is, the thick end members 5 are arranged so that the peaks of the angle members face outward. Since the edge portion 6 and the weir plate 3 are substantially in point contact with each other, when the thick end member 5 is pressed against the weir plate 3, an extremely large surface pressure is applied. For this reason, a part of the weir board 3 that comes into contact with the thick part 5 is deformed, and the edge 6 of the thick part 5 bites into a part of the weir board 3. That is, the biting portion 13 of the thick end member 5 is formed in a part of the weir plate 3.

食い込み部13では、せき板3が変形し、端太材5が強く押し付けられているため、端太材5とせき板3とが相対的に移動しにくくなる。この結果、端太材5とせき板3とのずれが抑制される。   In the biting portion 13, the baffle plate 3 is deformed and the thick end piece 5 is strongly pressed, so that the thick end piece 5 and the crest board 3 are relatively difficult to move. As a result, the displacement between the thick end member 5 and the weir plate 3 is suppressed.

なお、食い込み部13を形成するためには、せき板3の外周に端太材5を配置する際に、端太材5をせき板3に強く押し付ける工程を設けてもよいが、例えば、せき板3と端太材5とが接触している状態でせき板3の間にコンクリートを打設すれば、コンクリートからの押圧力でせき板3が端太材5に強く押し付けられ、食い込み部13を形成することもできる。このようにすることで、容易に、端太材5の略全長にわたって(端太材5とせき板3との接触部の全長にわたって)、食い込み部13を形成することができる。   In addition, in order to form the biting portion 13, a step of strongly pressing the thick end piece 5 against the weir board 3 may be provided when the thick end piece 5 is arranged on the outer periphery of the weir board 3. If concrete is poured between the crevice plates 3 in a state where the plate 3 and the thick member 5 are in contact with each other, the dam plate 3 is strongly pressed against the thick member 5 by a pressing force from the concrete, and the bite portion 13 is formed. Can also be formed. In this way, the biting portion 13 can be easily formed over substantially the entire length of the thick material 5 (over the entire length of the contact portion between the thick material 5 and the weir plate 3).

次に、本実施の形態の効果について説明する。図3(a)は、固定部材7同士の間における端太材5とせき板3の、コンクリートを打設する前の状態の平面図である。せき板3と端太材5は、ともにまっすぐに配置され、端太材5は、せき板3の外面に接触した状態となる。   Next, effects of the present embodiment will be described. FIG. 3A is a plan view of the thick end member 5 and the dam plate 3 between the fixing members 7 before the concrete is cast. The weir 3 and the thick material 5 are both arranged straight, and the thick material 5 comes into contact with the outer surface of the weir 3.

この状態からせき板3の間にコンクリートを打設すると、図3(b)に示すように、内面からコンクリートの圧力が付与される(図中矢印B)。このため、せき板3がコンクリートによって変形し、これに伴い、端太材5も変形する。   When concrete is poured between the dams 3 from this state, as shown in FIG. 3 (b), concrete pressure is applied from the inner surface (arrow B in the figure). For this reason, the weir board 3 is deformed by concrete, and accordingly, the thick end member 5 is also deformed.

ここで、本実施形態では、固定部材7同士の間において、端太材5の縁部6がせき板3に食い込むことで、ずれ止め構造11が形成されている。このため、端太材5の長手方向(水平方向であって図中C方向)に対して、端太材5とせき板3との間に相対的なずれが生じにくい。この結果、端太材5とせき板3とは、一体で変形することになる。したがって、端太材とせき板3とを一体とした場合における中立軸に対して外周面側(図中E)は引張変形となり、中立軸に対して内周面側(図中F)は圧縮変形となる。   Here, in the present embodiment, the slip prevention structure 11 is formed by the edge 6 of the thick end piece 5 biting into the weir board 3 between the fixing members 7. Therefore, relative displacement between the thick material 5 and the weir plate 3 is less likely to occur in the longitudinal direction of the thick material 5 (horizontal direction and direction C in the drawing). As a result, the thick end member 5 and the weir plate 3 are integrally deformed. Therefore, the outer peripheral surface side (E in the figure) with respect to the neutral shaft when the thick material and the weir plate 3 are integrated becomes tensile deformation, and the inner peripheral surface side (F in the figure) with respect to the neutral shaft is compressed. It becomes a deformation.

このように、せき板3が受けた応力が、端太材5に対して効率よく伝達されるため、断面二次モーメントを考慮する際、端太材5とせき板3の厚みを足した構造(図中E+F)を断面二次係数とすることができるため、従来のように、端太材のみで支持する場合と比較して、端太材5のサイズ(断面積)を小さくすることができる。   As described above, since the stress received by the dam plate 3 is efficiently transmitted to the thick member 5, a structure in which the thickness of the thick member 5 and the thickness of the dam plate 3 are added when considering the second moment of area. (E + F in the figure) can be used as a quadratic coefficient, so that the size (cross-sectional area) of the thick material 5 can be reduced as compared with the conventional case where only the thick material is supported. it can.

なお、端太材5とせき板3とを確実に一体で変形させるためには、両者の弾性係数が略等しいことが望ましい。例えば、端太材5とせき板3の材質を同一の材質とすることが望ましい。   In addition, in order to reliably deform the thick end member 5 and the crevice plate 3 integrally, it is desirable that the elastic coefficients of both are approximately equal. For example, it is desirable that the material of the thick end member 5 and the material of the weir plate 3 be the same.

以上、本実施の形態によれば、従来の型枠構造と比較して、よりサイズの小さな端太材5を適用することができる。例えば、従来の丸鋼管や角鋼管は、せき板3に対して食い込み部を形成しにくく、ずれ止め効果が小さいが、本実施形態によれば、アングル部材の縁部6をせき板3に接触させるため、略点接触となり、面圧を高めることができる。この結果、容易に食い込み部13を形成することができる。   As described above, according to the present embodiment, it is possible to apply the thick end member 5 having a smaller size as compared with the conventional mold structure. For example, conventional round steel pipes and square steel pipes are less likely to form a biting portion with respect to the weir plate 3 and have a small slippage preventing effect, but according to the present embodiment, the edge 6 of the angle member contacts the weir plate 3. As a result, substantially point contact occurs, and the surface pressure can be increased. As a result, the biting portion 13 can be easily formed.

なお、このように、面圧を高めることができれば、端太材5の形状は、図示した様なアングル部材でなくてもよく、フラットバーや溝形鋼などを適用することもできる。   As long as the surface pressure can be increased in this way, the shape of the thick end piece 5 does not need to be the angle member as shown, and a flat bar, a channel steel, or the like can be applied.

次に、第2の実施形態について説明する。図4は、第2の実施形態にかかるずれ止め構造11aを示す側面図である。なお、以下の説明において、ずれ止め構造11と同様の機能を奏する構成については、図2と同一の符号を付し、重複する説明を省略する。ずれ止め構造11aは、ずれ止め構造11と略同様であるが、端太材5aが用いられる点で異なる。   Next, a second embodiment will be described. FIG. 4 is a side view showing a slip prevention structure 11a according to the second embodiment. In the following description, components having the same functions as those of the slip-preventing structure 11 are denoted by the same reference numerals as those in FIG. The slip prevention structure 11a is substantially the same as the slip prevention structure 11, but differs in that a thick end member 5a is used.

端太材5aは、端太材5と同様に、断面が略L字状のアングル部材であるが、せき板3に対し、縁部ではなく平面部で接触する。すなわち、端太材5aとせき板3との面圧が低いため、食い込み部は形成されにくい。   Like the end thick member 5, the end thick member 5a is an angle member having a substantially L-shaped cross section. That is, since the surface pressure between the thick end member 5a and the weir plate 3 is low, the biting portion is not easily formed.

一方、端太材5aの平面部の外周面(せき板3との接触面)の一部には、粗面化処理部15が形成される。粗面化処理部15は、予め他の部位に対して面粗度を上げて、細かな凹凸を形成した部位である。なお、粗面化処理は、例えば、サンドブラストなどによって行えばよい。また、端太材5aの表面に赤錆を発生させてもよく、切削加工を施してもよい。   On the other hand, on a part of the outer peripheral surface (the contact surface with the weir plate 3) of the flat portion of the thick end member 5a, a roughening portion 15 is formed. The surface roughening processing section 15 is a part in which fine irregularities are formed by increasing the surface roughness with respect to other parts in advance. The surface roughening process may be performed by, for example, sandblasting. Further, red rust may be generated on the surface of the thick material 5a, and cutting may be performed.

端太材5aに粗面化処理部15を形成することで、せき板3と端太材5aとの間の摩擦係数を増加させることができる。このため、摩擦抵抗によって、せき板3と端太材5aとの相対的なずれを防止することができる。なお、粗面化処理部15は、端太材5aではなく、せき板3側に設けてもよく、両者に設けてもよい。すなわち、せき板3と端太材5aとの接触面における摩擦係数を増加することができれば、いずれの面に形成してもよい。また、端太材5aとせき板3とが面接触できればよく、端太材5aは、アングル部材ではなく、角鋼管やフラットバーなどを用いることもできる。   By forming the roughened portion 15 on the thick end piece 5a, the friction coefficient between the weir 3 and the thick end piece 5a can be increased. For this reason, relative displacement between the weir plate 3 and the thick end member 5a can be prevented by frictional resistance. Note that the surface roughening processing unit 15 may be provided not on the thick end member 5a but on the side of the weir board 3 or on both sides. That is, as long as the friction coefficient at the contact surface between the weir plate 3 and the thick end member 5a can be increased, it may be formed on any surface. Also, it is sufficient that the thick end member 5a and the weir plate 3 can be brought into surface contact, and the end thick member 5a may be not an angle member but a square steel pipe or a flat bar.

第2の実施形態によれば、第1の実施形態と同様の効果を得ることができる。また、粗面化処理部15による摩擦係数の増加によってずれを防止することができる。   According to the second embodiment, the same effect as in the first embodiment can be obtained. In addition, it is possible to prevent the displacement due to the increase in the coefficient of friction caused by the roughening processing unit 15.

次に、第3の実施形態について説明する。図5は、第3の実施形態にかかるずれ止め構造11bを示す側面図である。ずれ止め構造11bは、ずれ止め構造11と略同様であるが、端太材5bが用いられる点で異なる。   Next, a third embodiment will be described. FIG. 5 is a side view showing a slip prevention structure 11b according to the third embodiment. The slip prevention structure 11b is substantially the same as the slip prevention structure 11, but differs in that a thick end member 5b is used.

端太材5bは、丸鋼管である。せき板3の端太材5bとの接触部には、接触部の略全長にわたって溝17が形成される。なお、溝17は、予め、工場等でせき板3に形成される。溝17は、端太材5bの外形に応じた形状である。したがって、端太材5bは、溝17に嵌りこむ。   The thick end member 5b is a round steel pipe. A groove 17 is formed in the contact portion of the weir plate 3 with the thick end member 5b over substantially the entire length of the contact portion. The groove 17 is formed in advance in the dam board 3 at a factory or the like. The groove 17 has a shape corresponding to the outer shape of the thick end member 5b. Therefore, the thick end member 5 b fits into the groove 17.

端太材5bが溝17に嵌りこむことで、せき板3と端太材5bとの間の摩擦係数を増加させることができる。このため、せき板3と端太材5bとの相対的なずれを防止することができる。なお、溝17に嵌りこむことができれば、端太材5bの形状は、丸鋼管の他、角鋼管やフラットバーなど任意の形状を適用することができる。   By fitting the thick end piece 5b into the groove 17, the friction coefficient between the weir 3 and the thick end piece 5b can be increased. For this reason, it is possible to prevent relative displacement between the weir plate 3 and the thick end member 5b. In addition, if it can fit in the groove | channel 17, as a shape of the thick end member 5b, arbitrary shapes, such as a square steel pipe and a flat bar, other than a round steel pipe, can be applied.

第3の実施形態によれば、第1の実施形態と同様の効果を得ることができる。また、溝17をあらかじめ形成することで、確実に端太材5bとせき板3とのずれを防止することができる。   According to the third embodiment, the same effects as those of the first embodiment can be obtained. In addition, by forming the groove 17 in advance, it is possible to reliably prevent the displacement between the thick end member 5b and the dam plate 3.

次に、第4の実施形態について説明する。図6(a)は、第4の実施形態にかかる端太材5cを示す斜視図、図6(b)は、これを用いたずれ止め構造11cを示す図である。端太材5cは、所定の間隔で切欠き19が形成される。なお、端太材5cの断面形状は、円形に限られず、任意の断面形状を採用可能である。   Next, a fourth embodiment will be described. FIG. 6A is a perspective view showing a thick end member 5c according to the fourth embodiment, and FIG. 6B is a view showing a slip prevention structure 11c using the same. Notches 19 are formed at predetermined intervals in the thick end member 5c. Note that the cross-sectional shape of the thick end member 5c is not limited to a circle, and any cross-sectional shape can be adopted.

切欠き19は、端太材5cの一部が切除された部位である。なお、切欠き19は、図示したように、完全に孔を形成してもよく、または、外周面の一部が切削されて、薄肉部を形成してもよい。いずれにしても、切欠き19においては、端太材5cの外径が、切欠き19のない部位と比較して小さくなる。   The notch 19 is a portion where a part of the thick end member 5c is cut off. The notch 19 may completely form a hole as shown, or a part of the outer peripheral surface may be cut to form a thin portion. In any case, in the notch 19, the outer diameter of the thick end member 5c is smaller than that of the portion without the notch 19.

ずれ止め構造11cでは、切欠き19が、せき板3の凹凸形状と嵌合する。すなわち、せき板3には、溝などの加工は不要である。せき板3の凸部を切欠き19に嵌めこむことで、せき板3に対して端太材5cが、長手方向にずれることを防止することができる。   In the slip prevention structure 11c, the notch 19 fits with the uneven shape of the weir plate 3. That is, processing of the groove or the like is not required for the weir plate 3. By fitting the convex portion of the weir plate 3 into the notch 19, it is possible to prevent the thick end member 5c from being displaced in the longitudinal direction with respect to the weir plate 3.

第4の実施形態によれば、第1の実施形態と同様の効果を得ることができる。また、切欠き19を形成することで、確実に端太材5cとせき板3とのずれを防止することができる。   According to the fourth embodiment, the same effects as those of the first embodiment can be obtained. Further, by forming the notch 19, the displacement between the thick end member 5c and the dam plate 3 can be reliably prevented.

以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。   As described above, the embodiments of the present invention have been described with reference to the accompanying drawings. However, the technical scope of the present invention is not affected by the above-described embodiments. It is clear that a person skilled in the art can conceive various changes or modifications within the scope of the technical idea described in the claims, and these naturally fall within the technical scope of the present invention. It is understood to belong.

たとえば、せき板3と端太材5等とのずれを防止することができれば、せき板3と端太材5等との接触部の少なくとも一部を、溶接または接着してもよい。このように、せき板3と端太材5等とを接合することで、両者の相対的なずれを防止することもできる。   For example, at least a part of the contact portion between the weir plate 3 and the thick member 5 may be welded or bonded as long as the displacement between the weir plate 3 and the thick member 5 can be prevented. In this manner, by joining the weir plate 3 and the thick end member 5 and the like, it is possible to prevent relative displacement between the two.

1………型枠構造
3………せき板
5、5a、5b、5c………端太材
6………縁部
7………固定部材
9………セパレータ
11、11a、11b、11c………ずれ止め構造
13………食い込み部
15………粗面化処理部
17………溝
19………切欠き
100………型枠構造
103………せき板
105………端太材
107………固定部材
109………セパレータ
1 ... Formwork structure 3 ... Weir plates 5, 5a, 5b, 5c ... Thick material 6 ... Edge 7 ... Fixing member 9 ... Separators 11, 11a, 11b, 11c ... Slip-stop structure 13... Biting portion 15... Roughening treatment portion 17... Groove 19... Notch 100... Formwork structure 103. Thick material 107 Fixing member 109 Separator

Claims (4)

コンクリート構造体を打設するための型枠構造であって、
鋼製の一対のせき板と、
前記せき板の外面に、略水平方向に設けられる鋼製の端太材と、
前記端太材を前記せき板に所定の間隔で固定する固定部材と、
を具備し、
前記固定部材同士の間における前記せき板と前記端太材との接触部に、ずれ止め構造が設けられ、
前記ずれ止め構造は、前記端太材の一部が、前記せき板の一部に食い込むことで、コンクリートを打設して前記せき板が変形した際に、前記端太材の長手方向に対する、前記せき板と前記端太材との相対的なずれが抑制されることを特徴とする型枠構造。
A formwork structure for placing a concrete structure,
A pair of steel dams,
On the outer surface of the weir plate, a steel thick timber provided in a substantially horizontal direction,
A fixing member for fixing the thick end to the weir at predetermined intervals,
With
At the contact portion between the weir plate and the thick material between the fixing members, a slip prevention structure is provided,
The slip-prevention structure, a part of the thick material, by biting into a part of the weir, when concrete is cast and the weir is deformed, with respect to the longitudinal direction of the thick material, A formwork structure wherein relative displacement between the weir plate and the thick material is suppressed.
前記端太材は、L字状断面のアングルであり、
前記アングルの縁部が前記せき板と接触し、
前記ずれ止め構造は、前記アングルの縁部が、前記せき板の一部に食い込むことで、前記せき板と前記端太材との相対的なずれが抑制されることを特徴とする請求項記載の型枠構造。
The end thick member is an angle having an L-shaped cross section,
The edge of the angle contacts the weir,
The displacement preventing structure, the edges of the angles, by biting into a portion of the end plate, according to claim 1, characterized in that the relative displacement between the said dam TanFutoshizai is suppressed The described formwork structure.
コンクリート構造体を打設するための型枠構造であって、
鋼製の一対のせき板と、
前記せき板の外面に、略水平方向に設けられる鋼製の端太材と、
前記端太材を前記せき板に所定の間隔で固定する固定部材と、
を具備し、
前記固定部材同士の間における前記せき板と前記端太材との接触部に、ずれ止め構造が設けられ、
前記ずれ止め構造は、前記端太材と前記せき板とが、溶接または接着によって接合されることで、コンクリートを打設して前記せき板が変形した際に、前記端太材の長手方向に対する、前記せき板と前記端太材との相対的なずれが抑制されることを特徴とする型枠構造。
A formwork structure for placing a concrete structure,
A pair of steel dams,
On the outer surface of the weir plate, a steel thick timber provided in a substantially horizontal direction,
A fixing member for fixing the thick end to the weir at predetermined intervals,
With
A slip prevention structure is provided at a contact portion between the weir plate and the thick material between the fixing members,
The stopper structure is characterized in that the thick material and the weir plate are joined by welding or bonding, so that when the concrete is cast and the weir plate is deformed, the longitudinal direction of the thick material is reduced. A formwork structure wherein relative displacement between the weir plate and the thickened material is suppressed.
コンクリート構造体を打設するための型枠構造であって、
鋼製の一対のせき板と、
前記せき板の外面に、略水平方向に設けられる鋼製の端太材と、
前記端太材を前記せき板に所定の間隔で固定する固定部材と、
を具備し、
前記固定部材同士の間における前記せき板と前記端太材との接触部に、ずれ止め構造が設けられ、コンクリートを打設して前記せき板が変形した際に、前記端太材の長手方向に対する、前記せき板と前記端太材との相対的なずれが抑制され、
前記せき板は、断面が波形状を有しており、
前記端太材には、所定の間隔で切欠きが形成され、
前記ずれ止め構造は、前記端太材の前記切欠きが前記せき板の波形状の凹凸形状と嵌合することで、前記せき板と前記端太材との相対的なずれが抑制されることを特徴とする型枠構造。
A formwork structure for placing a concrete structure,
A pair of steel dams,
On the outer surface of the weir plate, a steel thick timber provided in a substantially horizontal direction,
A fixing member for fixing the thick end to the weir at predetermined intervals,
With
At the contact portion between the weir plate and the thick material between the fixing members, a slip-prevention structure is provided, and when the concrete is cast and the weir plate is deformed, the longitudinal direction of the thick material is changed. The relative displacement between the weir plate and the thick end is suppressed,
The weir plate has a corrugated cross section,
Notches are formed at predetermined intervals in the thick material,
The slippage prevention structure is such that the notch of the thick material is fitted with the corrugated unevenness of the weir, so that the relative displacement between the weir and the thick material is suppressed. Formwork structure characterized by the following.
JP2015063868A 2015-03-26 2015-03-26 Formwork structure Active JP6632806B2 (en)

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JPS4954924U (en) * 1972-08-15 1974-05-15
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JP2004011324A (en) * 2002-06-10 2004-01-15 Kamatetsu Kizai Co Ltd Punchless form panel and method of manufacture the same
JP2006125145A (en) * 2004-11-01 2006-05-18 Niki Komuten:Kk Concrete foundation form and concrete foundation form unit
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