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JP5664367B2 - Mounting hardware fixing method - Google Patents
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JP5664367B2 - Mounting hardware fixing method - Google Patents

Mounting hardware fixing method Download PDF

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JP5664367B2
JP5664367B2 JP2011056904A JP2011056904A JP5664367B2 JP 5664367 B2 JP5664367 B2 JP 5664367B2 JP 2011056904 A JP2011056904 A JP 2011056904A JP 2011056904 A JP2011056904 A JP 2011056904A JP 5664367 B2 JP5664367 B2 JP 5664367B2
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embedded metal
nut
reinforcing bar
fixed
concrete
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JP2012193517A (en
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範之 勝山
範之 勝山
大助 宅和
大助 宅和
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IHI Corp
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IHI Corp
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Description

本発明は、埋込金物固定方法に関する。  The present invention relates to a method for fixing an embedded metal.

下記特許文献1には、型枠工事に輻輳なく埋込金物を目的位置に固定する方法として、下地金物を取付けた先組鉄筋を建込位置に設置した後、下地金物に埋込金物の取付け位置をマーキングし、そのマーキング位置に出入り調整用ナットを備えたボルトを設置して該ボルトと埋込金物の孔部とを連通させ、埋込金物を出入り調整用ナットとフランジプレート付ナット間で締結固定する方法が開示されている。   In Patent Document 1 below, as a method for fixing an embedded metal fitting to a target position without congestion in formwork construction, a prefabricated reinforcing bar attached with a base metal fitting is installed at a built-in position, and then the embedded metal fitting is attached to the base metal fitting. Mark the position, install a bolt with an entry / exit adjustment nut at the marking position, and connect the bolt to the hole of the embedded metal, and insert the embedded metal between the access / adjustment adjustment nut and the nut with the flange plate. A method of fastening and fixing is disclosed.

特開2004−150098号公報JP 2004-150098 A

上記従来技術では、型枠と埋込金物との密着度が低いため、コンクリート打設時に型枠と埋込金物との隙間にコンクリートが入り込み、コンクリート硬化後に型枠を取り外すと、埋込金物の表面にノロ(コンクリートカス)が残りやすい。つまり、コンクリート打設後に埋込金物の表面とコンクリートの表面とが面一とならず、その後にノロ取り作業が必要となるなど、施工効率に大きな悪影響を及ぼす。  In the above prior art, since the adhesion between the mold and the embedded metal is low, concrete enters the gap between the mold and the embedded metal when placing the concrete. Noro (concrete residue) tends to remain on the surface. That is, after the concrete is placed, the surface of the embedded metal and the surface of the concrete are not flush with each other, and it is necessary to take a slot afterward, which greatly affects construction efficiency.

また、上記従来技術では、埋込金物に孔部を設ける必要があるため、埋込金物の強度低下を招くと共に、埋込金物に気密性が要求される場合に気密性の確保が困難となる。さらに、上記従来技術では、埋込金物をナット、ボルト、下地金物等を介して先組鉄筋に固定するため、一度、埋込金物を固定してしまうと、型枠の設置後に埋込金物の位置調整を行うことが困難となる。  Further, in the above prior art, since it is necessary to provide a hole in the embedded metal, the strength of the embedded metal is reduced, and it is difficult to ensure the airtightness when the embedded metal is required to be airtight. . Furthermore, in the above prior art, since the embedded metal is fixed to the pre-assembled reinforcing bar via a nut, bolt, base metal, etc., once the embedded metal is fixed, the embedded metal It becomes difficult to adjust the position.

本発明は上述した事情に鑑みてなされたものであり、以下の3点を目的とする。
(1)コンクリート打設後の施工効率低下を防ぐ。
(2)埋込金物の強度低下を防ぐと共に気密性を確保する。
(3)埋込金物の位置調整を容易とする。
The present invention has been made in view of the above circumstances, and has the following three points.
(1) Prevent construction efficiency decline after concrete placement.
(2) The strength of the embedded metal is prevented from being lowered and airtightness is secured.
(3) It is easy to adjust the position of the embedded metal.

上記目的を達成するために、本発明では、埋込金物固定方法に係る第1の解決手段として、1つ以上のナットを本設鉄筋に直接的或いは間接的に固定し、1つ以上のボルトの軸先端部によって埋込金物が型枠に押し付けられるよう前記1つ以上のナットに前記1つ以上のボルトを締結することを特徴とする。  In order to achieve the above object, according to the present invention, one or more nuts are fixed directly or indirectly to a main reinforcing bar as one of the first solving means related to the embedded metal fixing method. The one or more bolts are fastened to the one or more nuts so that the embedded metal is pressed against the mold by the tip end of the shaft.

また、本発明では、埋込金物固定方法に係る第2の解決手段として、上記第1の解決手段において、前記本設鉄筋に番線で固定された仮設鉄筋に前記ナットを溶接することにより、前記ナットを前記本設鉄筋に間接的に固定することを特徴とする。   Further, in the present invention, as a second solving means relating to the embedded metal fixing method, in the first solving means, by welding the nut to a temporary reinforcing bar fixed to the permanent reinforcing bar with a wire, The nut is indirectly fixed to the main reinforcing bar.

本発明によれば、埋込金物を型枠に密着させて固定することができるため、コンクリート打設時に型枠と埋込金物との隙間にコンクリートが入り込むことを防ぐことができる。つまり、本発明によれば、コンクリート打設後に埋込金物の表面とコンクリートの表面とが面一となるため、その後のノロ取り作業が不要となり、コンクリート打設後の施工効率低下を防ぐことができる。  According to the present invention, since the embedded metal can be fixed in close contact with the mold, it is possible to prevent the concrete from entering the gap between the mold and the embedded metal when placing concrete. In other words, according to the present invention, since the surface of the embedded metal and the surface of the concrete are flush with each other after the concrete is placed, the subsequent cutting operation is unnecessary, and the construction efficiency after the concrete is placed can be prevented from being lowered. it can.

また、本発明によれば、埋込金物に孔部を設ける必要がないため、埋込金物の強度低下を防ぐことができると共に、気密性が要求される場合には気密性を確保することができる。さらに、本発明によれば、埋込金物を型枠に押し付けて固定しているため、一度、埋込金物を固定してしまっても、型枠の設置後に埋込金物の位置調整を行うことが容易である。   In addition, according to the present invention, since it is not necessary to provide a hole in the embedded metal, it is possible to prevent a decrease in strength of the embedded metal and to ensure airtightness when airtightness is required. it can. Furthermore, according to the present invention, since the embedded metal is pressed and fixed to the mold, even if the embedded metal is fixed once, the position of the embedded metal can be adjusted after the mold is installed. Is easy.

本実施形態に係る埋込金物固定方法の各工程手順を示す図である。It is a figure which shows each process procedure of the embedded metal fixture method which concerns on this embodiment. 本実施形態の変形例を示す図である。It is a figure which shows the modification of this embodiment.

以下、本発明の一実施形態について、図面を参照しながら説明する。
図1は、本実施形態に係る埋込金物固定方法の各工程手順を示すものである。なお、以下では、図中に示すXYZの3軸座標系を参照しながら各部材の位置関係を説明する。ここでは、XY平面が水平面と平行な面として設定され、Z軸がXY平面に直交して鉛直方向に延びる軸として設定されている。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows each process procedure of the embedded metal fixing method according to the present embodiment. In the following, the positional relationship of each member will be described with reference to an XYZ triaxial coordinate system shown in the drawing. Here, the XY plane is set as a plane parallel to the horizontal plane, and the Z axis is set as an axis extending perpendicularly to the XY plane.

図1において、符号1は本設鉄筋であり、符号2は型枠である。図1(a)の平面図及び側面図に示すように、本設鉄筋1は、コンクリート構造物の建設予定地において、Y軸方向(コンクリート構造物の長さ方向)に延びるように設置され、且つZ軸方向(コンクリート構造物の高さ方向)に距離L1の間隔で複数設置されているものとする。また、X軸方向(コンクリート構造物の幅方向)において、本設鉄筋1から距離L2を隔てた位置に板状の型枠2がXY平面(水平面)に対して垂直に設置されているものとする。  In FIG. 1, the code | symbol 1 is a permanent reinforcement, and the code | symbol 2 is a formwork. As shown in the plan view and the side view of FIG. 1A, the main reinforcing bar 1 is installed so as to extend in the Y-axis direction (the length direction of the concrete structure) in the planned construction site of the concrete structure. In addition, it is assumed that a plurality are installed at intervals of a distance L1 in the Z-axis direction (the height direction of the concrete structure). Further, in the X-axis direction (the width direction of the concrete structure), the plate-shaped formwork 2 is installed perpendicularly to the XY plane (horizontal plane) at a position separated from the main reinforcing bar 1 by a distance L2. To do.

なお、Y軸方向に延びるコンクリート構造物を建設する場合、本設鉄筋1を挟んで対向する一対の型枠2が設置されることが通常であるが、説明の便宜上、片方の型枠2のみを図示するものとする。また、一対の型枠2の間において、本設鉄筋1が格子状且つ層状に組み立てられることが通常であるが、説明の便宜上、2本の本設鉄筋1のみを図示するものとする。  When constructing a concrete structure extending in the Y-axis direction, a pair of molds 2 that are opposed to each other with the main reinforcing bar 1 are usually installed. However, for convenience of explanation, only one of the molds 2 is provided. Is illustrated. In addition, it is normal that the main reinforcing bars 1 are assembled in a lattice shape and in a layered manner between the pair of molds 2, but for convenience of explanation, only two main reinforcing bars 1 are illustrated.

さて、本実施形態に係る埋込金物固定方法では、まず、図1(a)の平面図及び側面図に示すように、一対の仮設鉄筋3を、Y軸方向において距離L3の間隔で並ぶように、且つZ軸方向に平行な姿勢となるように本設鉄筋1に固定する。ここで、一対の仮設鉄筋3のそれぞれは、番線(針金)4によって本設鉄筋1に間接的に拘束されている。なお、一対の仮設鉄筋3のそれぞれを、溶接によって本設鉄筋1に直接的に固定しても良い。  In the embedded metal fixing method according to the present embodiment, first, as shown in the plan view and the side view of FIG. 1A, the pair of temporary reinforcing bars 3 are arranged at a distance L3 in the Y-axis direction. And fixed to the main reinforcing bar 1 so as to have a posture parallel to the Z-axis direction. Here, each of the pair of temporary reinforcing bars 3 is indirectly restrained by the main reinforcing bar 1 by a wire (wire) 4. Note that each of the pair of temporary reinforcing bars 3 may be directly fixed to the permanent reinforcing bar 1 by welding.

続いて、一対の仮設鉄筋3の間に、ネジ穴の中心線5aがX軸方向に平行となるようにナット5(例えば六角ナット)を配置し、当該ナット5を一対の仮設鉄筋3に溶接する。つまり、一対の仮設鉄筋3の間隔L3は、ナット5が一対の仮設鉄筋3の間に収まるような値に設定されている。このように、本実施形態では、本設鉄筋1に番線4で固定された仮設鉄筋3にナット5を溶接することにより、当該ナット5を本設鉄筋1に間接的に固定する。なお、ナット5を本設鉄筋1に直接溶接可能であれば、仮設鉄筋3を使用せずに直接ナット5を本設鉄筋1に溶接固定しても良いことは勿論である。  Subsequently, a nut 5 (for example, a hexagonal nut) is disposed between the pair of temporary reinforcing bars 3 so that the center line 5a of the screw hole is parallel to the X-axis direction, and the nut 5 is welded to the pair of temporary reinforcing bars 3. To do. That is, the distance L3 between the pair of temporary reinforcing bars 3 is set to a value that allows the nut 5 to fit between the pair of temporary reinforcing bars 3. Thus, in this embodiment, the nut 5 is indirectly fixed to the permanent reinforcing bar 1 by welding the nut 5 to the temporary reinforcing bar 3 fixed to the permanent reinforcing bar 1 with the wire 4. Of course, if the nut 5 can be directly welded to the main reinforcing bar 1, the nut 5 may be directly welded to the main reinforcing bar 1 without using the temporary reinforcing bar 3.

続いて、図1(b)の平面図及び側面図に示すように、板状の埋込金物6をナット5に対向するように配置した状態で、ボルト7(例えば六角ボルト)の軸先端部によって埋込金物6が型枠2に押し付けられるよう、ナット5にボルト7を締結する。これにより、埋込金物6は型枠2に密着した状態で固定されることになる。  Subsequently, as shown in the plan view and the side view of FIG. 1B, the shaft tip portion of the bolt 7 (for example, a hexagonal bolt) in a state where the plate-like embedded metal 6 is disposed so as to face the nut 5. Thus, the bolt 7 is fastened to the nut 5 so that the embedded metal 6 is pressed against the mold 2. As a result, the embedded metal 6 is fixed in close contact with the mold 2.

以上のような本実施形態によれば、埋込金物6を型枠2に密着させて固定することができるため、コンクリート打設時に型枠2と埋込金物6との隙間にコンクリートが入り込むことを防ぐことができる。つまり、本実施形態によれば、コンクリート打設後に埋込金物6の表面とコンクリートの表面とが面一となるため、その後のノロ取り作業が不要となり、コンクリート打設後の施工効率低下を防ぐことができる。  According to the present embodiment as described above, the embedded metal 6 can be fixed in close contact with the mold 2, so that concrete enters the gap between the mold 2 and the embedded metal 6 when placing concrete. Can be prevented. That is, according to the present embodiment, the surface of the embedded metal 6 and the surface of the concrete are flush with each other after the concrete is placed, so that the subsequent cutting operation is unnecessary, and the construction efficiency after the concrete is placed is prevented from being lowered. be able to.

また、本実施形態によれば、埋込金物6に孔部を設ける必要がないため、埋込金物6の強度低下を防ぐことができると共に、気密性が要求される場合には気密性を確保することができる。さらに、本実施形態によれば、埋込金物6を型枠2に押し付けて固定しているため、一度、埋込金物6を固定してしまっても、型枠2の設置後に埋込金物6の位置調整を行うことが容易である。   Further, according to the present embodiment, since it is not necessary to provide a hole in the embedded metal 6, it is possible to prevent the strength of the embedded metal 6 from being lowered and to ensure airtightness when airtightness is required. can do. Furthermore, according to this embodiment, since the embedded metal 6 is pressed and fixed to the mold 2, even if the embedded metal 6 is fixed once, the embedded metal 6 is installed after the mold 2 is installed. It is easy to adjust the position.

以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されず、本発明の趣旨を逸脱しない範囲において実施形態を変更しても良いことは勿論である。
例えば、図2(a)の平面図に示すように、本設鉄筋1のY軸方向において、仮設鉄筋3と並べてもう一対の仮設鉄筋3’を固定して、この一対の仮設鉄筋3’の間にナット5’を溶接固定し、ボルト7の軸先端部とボルト7’の軸先端部によって埋込金物6が型枠2に押し付けられるよう、ナット5にボルト7を締結すると共に、ナット5’にボルト7’を締結しても良い。
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, Of course, you may change embodiment in the range which does not deviate from the meaning of this invention.
For example, as shown in the plan view of FIG. 2 (a), in the Y-axis direction of the main reinforcing bar 1, a pair of temporary reinforcing bars 3 'are fixed in parallel with the temporary reinforcing bars 3, and the pair of temporary reinforcing bars 3' A nut 5 ′ is fixed by welding between the nut 5, and the bolt 7 is fastened to the nut 5 so that the embedded metal 6 is pressed against the mold 2 by the shaft tip of the bolt 7 and the shaft tip of the bolt 7 ′. 'Bolt 7' may be fastened.

または、図2(b)の側面図に示すように、一対の仮設鉄筋3の間において、Z軸方向に沿ってナット5とナット5’を並べて溶接固定し、ボルト7の軸先端部とボルト7’の軸先端部によって埋込金物6が型枠2に押し付けられるよう、ナット5にボルト7を締結すると共に、ナット5’にボルト7’を締結しても良い。  Alternatively, as shown in the side view of FIG. 2B, between the pair of temporary reinforcing bars 3, the nut 5 and the nut 5 ′ are aligned and welded along the Z-axis direction, and the shaft tip of the bolt 7 and the bolt The bolt 7 may be fastened to the nut 5 ′ and the bolt 7 ′ may be fastened to the nut 5 ′ so that the embedded metal 6 is pressed against the mold 2 by the shaft tip portion of 7 ′.

このように、本設鉄筋1に複数のナット5、5’を固定し、複数のボルト7、7’の軸先端部によって埋込金物6が型枠2に押し付けられるよう、複数のナット5、5’に複数のボルト7、7’を締結することにより、埋込金物6と型枠2との密着度をより高めることができる。なお、図2(a)に示す埋込金物固定方法と図2(b)に示す埋込金物固定方法とを組み合わせて使用しても良い。  In this way, the plurality of nuts 5, 5 ′ are fixed to the main reinforcing bar 1, and the embedded metal 6 is pressed against the mold 2 by the shaft tip portions of the plurality of bolts 7, 7 ′. By fastening a plurality of bolts 7 and 7 ′ to 5 ′, the degree of adhesion between the embedded metal 6 and the mold 2 can be further increased. The embedded metal fixing method shown in FIG. 2A and the embedded metal fixing method shown in FIG. 2B may be used in combination.

1…本設鉄筋、2…型枠、3、3’…仮設鉄筋、4…番線、5、5’…ナット、6…埋込金物、7、7’…ボルト  DESCRIPTION OF SYMBOLS 1 ... Main reinforcement, 2 ... Formwork, 3, 3 '... Temporary reinforcement, 4 ... Wire, 5, 5' ... Nut, 6 ... Embedded metal, 7, 7 '... Bolt

Claims (2)

1つ以上のナットを本設鉄筋に直接的或いは間接的に固定し、1つ以上のボルトの軸先端部によって埋込金物が型枠に押し付けられるよう前記1つ以上のナットに前記1つ以上のボルトを締結することを特徴とする埋込金物固定方法。   The one or more nuts are fixed directly or indirectly to the main reinforcing bar, and the one or more nuts are fixed to the one or more nuts so that the embedded metal is pressed against the formwork by the shaft tip of one or more bolts. A method of fixing an embedded metal, characterized by fastening a bolt of the above. 前記本設鉄筋に番線で固定された仮設鉄筋に前記ナットを溶接することにより、前記ナットを前記本設鉄筋に間接的に固定することを特徴とする請求項1に記載の埋込金物固定方法。   The embedded metal fixing method according to claim 1, wherein the nut is indirectly fixed to the permanent reinforcing bar by welding the nut to a temporary reinforcing bar fixed to the permanent reinforcing bar with a wire. .
JP2011056904A 2011-03-15 2011-03-15 Mounting hardware fixing method Expired - Fee Related JP5664367B2 (en)

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JPS60164558A (en) * 1984-02-06 1985-08-27 株式会社東芝 Embedding of metal fittings in concrete body
JPH0676732B2 (en) * 1989-12-06 1994-09-28 未来工業株式会社 Fixing device for concrete buried body
JP2513421Y2 (en) * 1990-03-23 1996-10-09 大成建設株式会社 Anchor device for push-pull support
JPH0614302U (en) * 1992-02-26 1994-02-22 石川島播磨重工業株式会社 Embedded hardware for reinforced concrete
JP2009102909A (en) * 2007-10-24 2009-05-14 Tokyo Gas Co Ltd Embedded metal and its mounting method

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