JP2010203189A - Junction structure to concrete structure of member to be joined - Google Patents

Junction structure to concrete structure of member to be joined Download PDF

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JP2010203189A
JP2010203189A JP2009052422A JP2009052422A JP2010203189A JP 2010203189 A JP2010203189 A JP 2010203189A JP 2009052422 A JP2009052422 A JP 2009052422A JP 2009052422 A JP2009052422 A JP 2009052422A JP 2010203189 A JP2010203189 A JP 2010203189A
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concrete structure
hole
anchor
joined
steel plate
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JP5207070B2 (en
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Yasuo Jinno
靖夫 神野
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To enable to adjust a position of an anchor member and a member to be joined. <P>SOLUTION: A hole 2 is formed by drilling a concrete structure 10 such as existing reinforced concrete buildings, an execution anchor 1 is installed into the hole section 2, an execution anchor 1 is inserted into a through-hole 4 formed in a steel plate 3 to be joined to the concrete structure 10, and a grout material (filler) 5 is filled between the execution anchor 1 and the through-hole 4. An anchoring section 12 of the execution anchor includes a head 14 thicker than a shaft 13 at the tip. The through hole 4 is formed larger than the outer diameter of the anchoring section 12 and is in a tapered shape wherein the inner diameter increases toward an opposite side 3b from a junction surface side 3a of the steel plate 3 to the concrete structure 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、鋼材などの部材をコンクリート躯体やコンクリート部材に接合する構造に関する。   The present invention relates to a structure for joining a member such as a steel material to a concrete frame or a concrete member.

従来、鋼板や形鋼などの鋼材をコンクリート躯体に固定する場合に、予めコンクリート躯体に締結部分（ネジ部）を上方に露出させた状態で複数のアンカーボルトを埋設しておき、これらのアンカーボルトの締結部分を鋼材に形成されたボルト孔に貫通させた後に座金を介してナットで締結している。
また、既存の鉄筋コンクリート建物などに、例えば、耐震補強の為に補強鉄骨を設置したり、大型の設備機器類や鉄骨造の工作物を設置したりする場合には、既存のコンクリート躯体に穿孔して孔部を形成し、その孔部に埋設するあと施工アンカーを使用している。 Conventionally, when a steel material such as a steel plate or a shape steel is fixed to a concrete frame, a plurality of anchor bolts are embedded in advance in a state where a fastening portion (screw portion) is exposed upward in the concrete frame. Are fastened with nuts through washers after passing through the bolt holes formed in the steel material.
In addition, for example, when installing reinforced steel frames for seismic reinforcement or installing large equipment and steel structures in existing reinforced concrete buildings, etc., the existing concrete frame is drilled. After the hole is formed, the construction anchor is used after being embedded in the hole.

特許文献１によるベースプレート（鋼板）とアンカーボルトとの固定方法では、ベースプレートのボルト孔は、アンカーボルトの締結部分の外周面とボルト孔の内周面とのクリアランスが５ｍｍよりも大きくなるように形成されると共に、ボルト孔の上部には、ボルト孔に連通する充填材注入溝が形成されている。
そして、ベースプレートのボルト孔にコンクリート躯体に固定されたアンカーボルトの締結部分を貫通させた後に座金を介してナットで締結し、締結部分の外周面とボルト孔の内周面とのクリアランスに充填材注入溝から充填材を注入して、ベースプレートとアンカーボルトを固定している。締結部分の外周面とボルト孔の内周面との間にクリアランスがあることで、アンカーボルトとボルト孔の位置が多少ずれたとしても、コンクリート躯体の所定の位置にベースプレートを設置することができる。 In the method of fixing the base plate (steel plate) and the anchor bolt according to Patent Document 1, the bolt hole of the base plate is formed so that the clearance between the outer peripheral surface of the anchor bolt fastening portion and the inner peripheral surface of the bolt hole is larger than 5 mm. In addition, a filler injection groove communicating with the bolt hole is formed in the upper portion of the bolt hole.
Then, the fastening portion of the anchor bolt fixed to the concrete frame is passed through the bolt hole of the base plate, and then fastened with a nut through a washer, and a filler is provided in the clearance between the outer peripheral surface of the fastening portion and the inner peripheral surface of the bolt hole. Filler is injected from the injection groove, and the base plate and anchor bolt are fixed. Since there is a clearance between the outer peripheral surface of the fastening portion and the inner peripheral surface of the bolt hole, the base plate can be installed at a predetermined position of the concrete frame even if the anchor bolt and the bolt hole are slightly displaced. .

特開２００５−２３７６９号公報Japanese Patent Laid-Open No. 2005-23769

しかしながら、従来のアンカー部材を使用して鋼材などをコンクリート構造物へ接合する方法では以下のような問題があった。
既存のコンクリート構造物に、あと施工アンカーを設置する場合には、既存のコンクリート構造物内に鉄筋などが配設されているため、この鉄筋などと、あと施工アンカーとがあたらないようしなければならない。そして、設計段階で決定したあと施工アンカーの位置が鉄筋などと干渉してしまう場合には、あと施工アンカーをずらして施工していることが多い。
また、既存コンクリート構造物に設置するあと施工アンカーや、コンクリート打設時に埋設するアンカーボルトの設置において、数ｍｍのずれは施工精度の点からしても生じることがある。 However, the conventional method of joining a steel material or the like to a concrete structure using an anchor member has the following problems.
When post-construction anchors are installed on an existing concrete structure, reinforcing bars, etc. are placed in the existing concrete structure. Don't be. And when the position of the construction anchor determined after the design stage interferes with a reinforcing bar or the like, the construction anchor is often shifted and constructed.
Further, in the installation of post-installed anchors to be installed on existing concrete structures and anchor bolts to be embedded at the time of placing concrete, a deviation of several mm may occur in terms of construction accuracy.

一方、鋼材に形成されたボルト孔の直径は、貫通するボルト径に応じて上限が規定されているため、ボルト孔の径を規定以上に大きくすることができない。
このため、あと施工アンカーを設置した後に、あと施工アンカーの位置を実測し、この実測値に基づいて鋼材にボルト孔を形成することもある。このあと施工アンカーの位置を実測した後に鋼材のボルト孔を形成することは、手間がかかり、また工期が長くなるという問題があった。 On the other hand, since the upper limit of the diameter of the bolt hole formed in the steel material is defined according to the diameter of the penetrating bolt, the diameter of the bolt hole cannot be increased more than specified.
For this reason, after installing a post-construction anchor, the position of a post-construction anchor is measured and a bolt hole may be formed in steel materials based on this measured value. Thereafter, forming the bolt hole of the steel material after actually measuring the position of the construction anchor has a problem that it takes time and the work period is long.

また、特許文献１による、アンカーボルトの締結部分の外周面とボルト孔の内周面との間にクリアランスを設けて、このクリアランスに充填材を充填する方法では、ベースプレートの上面にボルトおよびナットが突出するため、このボルトおよびナットが完成後に邪魔になることがあった。   Further, in the method of providing a clearance between the outer peripheral surface of the fastening portion of the anchor bolt and the inner peripheral surface of the bolt hole according to Patent Document 1, and filling the clearance with the filler, a bolt and a nut are formed on the upper surface of the base plate. Since it protrudes, this bolt and nut may become an obstacle after completion.

本発明は、上述する問題点に鑑みてなされたもので、コンクリート構造物に設置されたアンカー部材の位置と、被接合部材に形成された貫通孔との位置がずれたとしても、アンカー部材を被接合部材の貫通孔へ挿入できて、コンクリート構造物に被接合部材を接合することができ、接合後に被接合部材からボルトおよびナットが突出しないような被接合部材のコンクリート構造物への接合構造を提供することを目的とする。   The present invention has been made in view of the above-described problems, and even if the position of the anchor member installed in the concrete structure and the position of the through hole formed in the member to be joined are shifted, the anchor member is removed. Bonding structure of a bonded member to a concrete structure that can be inserted into a through-hole of the bonded member, and the bonded member can be bonded to a concrete structure, and bolts and nuts do not protrude from the bonded member after bonding. The purpose is to provide.

上記目的を達成するため、本発明に係る被接合部材のコンクリート構造物への接合構造では、コンクリート構造物に鋼材などの被接合部材を接合する構造であって、コンクリート構造物に定着部を突出させた状態で埋設されるアンカー部材と、被接合部材に形成されて、アンカー部材の定着部が挿入される貫通孔と、貫通孔内に充填される充填材と、を備え、定着部は側面に凸部を備えて、貫通孔は定着部の外径よりも大きく形成されると共に、コンクリート構造物への接合面側から反対側に向かって内径が大きくなることを特徴とする。
本発明では、貫通孔は定着部の外径よりも大きく形成されて、貫通孔の内周面と定着部の外周面との間にクリアランスがあることにより、コンクリート構造物に設置されたアンカー部材と貫通孔との位置に多少のずれが生じたとしても、アンカー部材を貫通孔へ挿入できて、被接合部材をコンクリート構造物の所定の位置へ接合することができる。
また、定着部は側面に凸部を備えていて、貫通孔はコンクリート構造物への接合面側から反対側に向かって徐々に内径が大きくなる形状なので、被接合部材がコンクリート構造物から離れる方向に引っ張られた場合に、凸部とコンクリート構造物の間に形成される圧縮ストラットによって、被接合部材が引っ張られる外力に対抗することができる。 In order to achieve the above-described object, the joining structure of the joined member to the concrete structure according to the present invention is a structure in which the joined member such as steel is joined to the concrete structure, and the fixing portion protrudes from the concrete structure. An anchor member embedded in a state where the anchor member is buried, a through hole formed in the member to be joined and into which the fixing portion of the anchor member is inserted, and a filler filled in the through hole. The through-hole is formed larger than the outer diameter of the fixing portion, and the inner diameter increases from the joint surface side to the concrete structure toward the opposite side.
In the present invention, the through-hole is formed larger than the outer diameter of the fixing portion, and there is a clearance between the inner peripheral surface of the through-hole and the outer peripheral surface of the fixing portion, so that the anchor member installed in the concrete structure Even if a slight deviation occurs between the positions of the through hole and the through hole, the anchor member can be inserted into the through hole and the member to be bonded can be bonded to the predetermined position of the concrete structure.
In addition, the fixing part has a convex part on the side surface, and the through hole has a shape in which the inner diameter gradually increases from the joint surface side to the concrete structure side, so that the member to be joined is away from the concrete structure. When it is pulled, the compression strut formed between the convex portion and the concrete structure can counter the external force that the member to be joined is pulled.

また、本発明に係る被接合部材のコンクリート構造物への接合構造では、定着部は、アンカー部材の先端部に設けられていることを特徴とする。
本発明では、定着部がアンカー部材の先端に設けられていることにより、アンカー部材が被接合部材から突出しない仕上がりとすることができる。 Moreover, in the joining structure to the concrete structure of the to-be-joined member which concerns on this invention, the fixing | fixed part is provided in the front-end | tip part of an anchor member, It is characterized by the above-mentioned.
In the present invention, since the fixing portion is provided at the tip of the anchor member, the anchor member can be finished so as not to protrude from the member to be joined.

また、本発明に係る被接合部材のコンクリート構造物への接合構造では、定着部の凸部は、定着部の軸方向に直交する板状の部材によって形成されていることが好ましい。
本発明では、定着部の凸部を定着部の軸方向に直交する板状の部材とすることにより、被接合部材がコンクリート構造物から離れる方向に引っ張られる外力を受けた場合に、板状の凸部から効率的に圧縮ストラットを形成することができる。 Moreover, in the joining structure to the concrete structure of the to-be-joined member based on this invention, it is preferable that the convex part of a fixing | fixed part is formed of the plate-shaped member orthogonal to the axial direction of a fixing | fixed part.
In the present invention, the convex portion of the fixing portion is a plate-like member orthogonal to the axial direction of the fixing portion, so that when the member to be joined receives an external force that is pulled away from the concrete structure, the plate-like member A compression strut can be efficiently formed from a convex part.

また、本発明に係る被接合部材のコンクリート構造物への接合構造では、貫通孔は、コンクリート構造物への接合面側から反対側に向かって径が大きくなるテーパー形状であることが好ましい。
本発明では、貫通孔をコンクリート構造物への接合面側から反対側に向かって径が大きくなるテーパー形状とすることにより、圧縮ストラットを被接合部材に効率的に伝達することができる。 Moreover, in the joining structure to the concrete structure of the to-be-joined member which concerns on this invention, it is preferable that a through-hole is a taper shape from which the diameter becomes large toward the opposite side from the joining surface side to a concrete structure.
In this invention, a compression strut can be efficiently transmitted to a to-be-joined member by making a through-hole into the taper shape whose diameter becomes large toward the opposite side from the joint surface side to a concrete structure.

本発明によれば、被接合部材の貫通孔の内周面がアンカー部材の定着部の外周面よりも大きく形成されていることにより、コンクリート構造物に設置されたアンカー部材と貫通孔の位置が多少ずれたとしても、アンカー部材を貫通孔へ挿入することができるので、容易にコンクリート構造物へ被接合部材を接合でき、労力の軽減と工期の短縮ができて施工性を向上させることができる。また、定着部は側面に凸部を備えていて、貫通孔はコンクリート構造物への接合面側から反対側に向かって内径が大きくなる形状なので、凸部とコンクリート構造物との間に圧縮ストラットを形成することができて、被接合部材がコンクリート構造物から離れる方向に引っ張られる外力に対抗でき、被接合部材を強固にコンクリート構造物に固定することができる。   According to the present invention, since the inner peripheral surface of the through hole of the member to be joined is formed larger than the outer peripheral surface of the fixing portion of the anchor member, the position of the anchor member installed in the concrete structure and the through hole is Even if there is a slight deviation, the anchor member can be inserted into the through hole, so that the member to be joined can be easily joined to the concrete structure, and the work can be reduced and the work period can be shortened to improve the workability. . In addition, the fixing part has a convex part on the side surface, and the through hole has a shape in which the inner diameter increases from the joint surface side to the opposite side to the concrete structure, so that a compression strut is formed between the convex part and the concrete structure. Therefore, it is possible to resist the external force that the member to be joined is pulled away from the concrete structure, and the member to be joined can be firmly fixed to the concrete structure.

本発明の第一の実施の形態による鋼板のコンクリート構造物への接合構造の一例を示す図である。It is a figure which shows an example of the joining structure to the concrete structure of the steel plate by 1st embodiment of this invention. 図１に示す鋼板のコンクリート構造物への接合構造のアンカー部材と貫通孔とがずれた状態で接合された場合を示す図である。It is a figure which shows the case where it joins in the state from which the anchor member and through-hole of the joining structure to the concrete structure of the steel plate shown in FIG. 1 shifted | deviated. 本発明の第二の実施の形態による鋼板のコンクリート構造物への接合構造の一例を示す図である。It is a figure which shows an example of the joining structure to the concrete structure of the steel plate by 2nd embodiment of this invention. 本発明の第一の実施の形態による鋼板のコンクリート構造物への接合構造の変形例を示す図である。It is a figure which shows the modification of the joining structure to the concrete structure of the steel plate by 1st embodiment of this invention. 本発明の第一の実施の形態による鋼板のコンクリート構造物への接合構造の他の変形例を示す図である。It is a figure which shows the other modification of the joining structure to the concrete structure of the steel plate by 1st embodiment of this invention. 本発明の第一の実施の形態による鋼板のコンクリート構造物への接合構造の更に他の変形例を示す図である。It is a figure which shows the further another modification of the joining structure to the concrete structure of the steel plate by 1st embodiment of this invention.

以下、本発明の第一の実施の形態による鋼板（被接合部材）のコンクリート構造物への接合構造について、図１および２に基づいて説明する。
図１に示すように、第一の実施の形態による鋼板のコンクリート構造物への接合構造は、既存の鉄筋コンクリート建物などのコンクリート構造物１０を穿孔して孔部２を形成し、あと施工アンカー１がその孔部２に設置されて、コンクリート構造物１０へ接合される鋼板３に形成された貫通孔４にあと施工アンカー１が挿入され、あと施工アンカー１と貫通孔４との間にグラウト材（充填材）５が充填されている。 Hereinafter, the joining structure to the concrete structure of the steel plate (joined member) by 1st embodiment of this invention is demonstrated based on FIG. 1 and 2. FIG.
As shown in FIG. 1, the joining structure of the steel plate to the concrete structure according to the first embodiment forms a hole 2 by drilling a concrete structure 10 such as an existing reinforced concrete building, and a post-installed anchor 1. Is installed in the hole 2, the post-construction anchor 1 is inserted into the through-hole 4 formed in the steel plate 3 joined to the concrete structure 10, and the grout material is interposed between the post-construction anchor 1 and the through-hole 4. (Filler) 5 is filled.

あと施工アンカー１は、孔部２に埋設されるアンカー部１１と、アンカー部１１と連続し埋設された際にコンクリート構造物１０から突出する定着部１２とから構成される。
アンカー部１１は、例えば、孔部２に挿入され打ち込まれて、アンカー部１１の側面に形成された図示しない凹凸がコンクリート構造物１０に付着することでコンクリート構造物１０に固定される公知の構成をしている。
定着部１２は、アンカー部１１とつながる軸部１３と、軸部１３の先端に接合された頭部１４とを備えている。頭部１４の断面形状は、軸部１３の断面形状よりも大きい、例えば円形や略円形、または四角形や六角形などの多角形の形状となっている。また、頭部１４は、軸部１３の軸方向に直交する板状の部材としてもよい。
なお、軸部１３と頭部１４とは一体に形成されていてもよく、また個々に形成されて溶接などで接合されていてもよい。 The post-construction anchor 1 includes an anchor portion 11 embedded in the hole portion 2 and a fixing portion 12 that protrudes from the concrete structure 10 when embedded continuously with the anchor portion 11.
The anchor portion 11 is, for example, a known configuration that is inserted into the hole portion 2 and driven and fixed to the concrete structure 10 by attaching unevenness (not shown) formed on the side surface of the anchor portion 11 to the concrete structure 10. I am doing.
The fixing unit 12 includes a shaft portion 13 connected to the anchor portion 11 and a head portion 14 joined to the tip of the shaft portion 13. The cross-sectional shape of the head portion 14 is larger than the cross-sectional shape of the shaft portion 13, for example, a circular shape, a substantially circular shape, or a polygonal shape such as a square shape or a hexagonal shape. The head 14 may be a plate-like member that is orthogonal to the axial direction of the shaft portion 13.
The shaft portion 13 and the head portion 14 may be formed integrally, or may be formed individually and joined by welding or the like.

貫通孔４は、断面形状が鋼板３のコンクリート構造物１０に接する側３ａからその反対側３ｂに向かって徐々に広くなるテーパー形状をしている。また、貫通孔４の内径は定着部１２の頭部１４よりも例えば、１０〜３０ｍｍほど大きく形成されていて、貫通孔４に挿入された定着部１２と貫通孔４の内周面との間にはクリアランスが設けられた状態となる。
また、定着部１２が貫通孔４に挿入された際に、定着部１２の頭部１４が鋼板３から突出しないように、鋼板３の厚さや定着部１２の長さを設定する。
グラウト材５は、後述する圧縮ストラットの圧縮力を鋼板３へ伝達するのに十分な強度を有する材料で、例えば、無収縮グラウトやコンクリート、ポリマーセメントモルタル、エポキシ樹脂などを使用する。 The through-hole 4 has a tapered shape in which the cross-sectional shape gradually increases from the side 3a in contact with the concrete structure 10 of the steel plate 3 toward the opposite side 3b. Further, the inner diameter of the through hole 4 is formed to be, for example, 10 to 30 mm larger than the head 14 of the fixing unit 12, and between the fixing unit 12 inserted into the through hole 4 and the inner peripheral surface of the through hole 4. Is provided with a clearance.
Further, the thickness of the steel plate 3 and the length of the fixing unit 12 are set so that the head 14 of the fixing unit 12 does not protrude from the steel plate 3 when the fixing unit 12 is inserted into the through hole 4.
The grout material 5 is a material having sufficient strength to transmit the compressive force of the compression strut described later to the steel plate 3, and for example, non-shrink grout, concrete, polymer cement mortar, epoxy resin, or the like is used.

貫通孔４は、断面形状が鋼板３のコンクリート構造物１０に接する側３ａからその反対側３ｂに向かって徐々に広くなるテーパー形状に形成されると共に、定着部１２に頭部１４が設けられることによって、コンクリート構造物１０に接合された鋼板３がコンクリート構造物１０から離れる方向に引っ張られた場合に、定着部１２の頭部１４とコンクリート構造物１０との間にコンクリート構造物１０に対して斜め方向に（図中の矢印の方向）に作用する圧縮ストラットが形成される。
この圧縮ストラットによって、鋼板３がコンクリート構造物１０から引っ張られる外力に対抗することができ、鋼板３がコンクリート構造物１０から離れることを防止できる。 The through-hole 4 is formed in a tapered shape in which the cross-sectional shape gradually widens from the side 3 a in contact with the concrete structure 10 of the steel plate 3 toward the opposite side 3 b, and a head 14 is provided in the fixing unit 12. When the steel plate 3 joined to the concrete structure 10 is pulled away from the concrete structure 10, the concrete structure 10 is positioned between the head 14 of the fixing unit 12 and the concrete structure 10. A compression strut is formed that acts in an oblique direction (in the direction of the arrow in the figure).
By this compression strut, the steel plate 3 can resist the external force pulled from the concrete structure 10, and the steel plate 3 can be prevented from separating from the concrete structure 10.

次に、鋼板３のコンクリート構造物１０への接合方法について図面を用いて説明する。
あらかじめ、鋼板３のコンクリート構造物１０への設置位置を確認し、コンクリート構造物１０にあと施工アンカー１を設置する位置と、鋼板３に貫通孔４を形成する位置とを決定し、工場などで鋼板３に貫通孔４を形成しておく。
そして、コンクリート構造物１０のあと施工アンカー１を設置する位置に穿孔して孔部２を形成し、その孔部２にあと施工アンカー１のアンカー部１１を埋設し、打ち込みなどによりアンカー部１１をコンクリート構造物１０に固定する。 Next, a method for joining the steel plate 3 to the concrete structure 10 will be described with reference to the drawings.
The installation position of the steel plate 3 on the concrete structure 10 is confirmed in advance, and the position where the post-construction anchor 1 is installed on the concrete structure 10 and the position where the through hole 4 is formed in the steel plate 3 are determined. A through hole 4 is formed in the steel plate 3.
And it drills in the position which installs the post-construction anchor 1 of the concrete structure 10, and forms the hole part 2, The anchor part 11 of the post-construction anchor 1 is embed | buried in the hole part 2, The anchor part 11 is driven by driving etc. Fix to the concrete structure 10.

次に、コンクリート構造物１０に鋼板３を設置する。
鋼板３の設置は、あと施工アンカー１の定着部１２を鋼板３の貫通孔４に挿入し、鋼板３を決められた位置に配置する。
このとき、定着部１２の外周面と貫通孔４の内周面との間にクリアランスが設けられているので、コンクリート構造物１０へあと施工アンカー１を設置した際に、あと施工アンカー１の位置が多少ずれたとしても、図２に示すように、鋼板３の位置はクリアランスの範囲内で決められた位置に配置することができる。
そして、貫通孔４の内周面と定着部１２の外周面との間にグラウト材５を充填し固化させる。貫通孔４の内周面と定着部１２の外周面との間にグラウト材５が充填されて、鋼板３とあと施工アンカー１とが一体化し、鋼板３がコンクリート構造物１０に接合される。 Next, the steel plate 3 is installed on the concrete structure 10.
The steel plate 3 is installed by inserting the fixing portion 12 of the post-installed anchor 1 into the through hole 4 of the steel plate 3 and placing the steel plate 3 at a predetermined position.
At this time, since the clearance is provided between the outer peripheral surface of the fixing portion 12 and the inner peripheral surface of the through-hole 4, the position of the post-construction anchor 1 is set when the post-construction anchor 1 is installed on the concrete structure 10. 2, the position of the steel plate 3 can be arranged at a position determined within the clearance as shown in FIG. 2.
Then, the grout material 5 is filled between the inner peripheral surface of the through hole 4 and the outer peripheral surface of the fixing portion 12 and solidified. The grout material 5 is filled between the inner peripheral surface of the through hole 4 and the outer peripheral surface of the fixing portion 12, the steel plate 3 and the post-construction anchor 1 are integrated, and the steel plate 3 is joined to the concrete structure 10.

上述した第一の実施の形態による鋼板のコンクリート構造物への接合構造では、貫通孔４の内周面があと施工アンカー１の定着部１２の外周面に比べて大きく形成されているので、あと施工アンカー１の設置位置がずれたとしても、決められた位置に鋼板３を設置することができる。
そして、従来のようにコンクリート構造物１０にあと施工アンカー１を施工し、あと施工アンカー１の位置を測定してから、測定された位置に合わせて鋼板３に貫通孔４を施工する必要がないので、貫通孔４を工場などで予め鋼板３に形成することができて、労力を軽減でき、工期を短縮することができて施工性を向上できる効果を奏する。 In the joint structure of the steel plate to the concrete structure according to the first embodiment described above, the inner peripheral surface of the through hole 4 is formed larger than the outer peripheral surface of the fixing portion 12 of the post-installed anchor 1. Even if the installation position of the construction anchor 1 is shifted, the steel plate 3 can be installed at a predetermined position.
And after constructing the post-construction anchor 1 on the concrete structure 10 and measuring the position of the post-construction anchor 1 as in the prior art, it is not necessary to construct the through-hole 4 in the steel plate 3 according to the measured position. Therefore, the through-hole 4 can be formed in the steel plate 3 in advance at a factory or the like, so that labor can be reduced, the work period can be shortened, and workability can be improved.

また、貫通孔４がテーパー形状に形成されて、定着部１２に頭部１４が設けられていることにより、頭部１４とコンクリート構造物１０との間に圧縮ストラットが形成されるので、頭部１４がグラウト材５を介して貫通孔４の内周面から鋼板３をコンクリート構造物１０側に押圧し、鋼板３がコンクリート構造物１０から離れる方向に引っ張られた場合にも、この外力に対して効率的に対抗することができる。   Further, since the through-hole 4 is formed in a tapered shape and the fixing portion 12 is provided with the head 14, a compression strut is formed between the head 14 and the concrete structure 10. 14 also presses the steel plate 3 from the inner peripheral surface of the through-hole 4 to the concrete structure 10 side through the grout material 5 and the steel plate 3 is pulled away from the concrete structure 10. Can compete efficiently.

次に、他の実施の形態および変形例について、添付図面に基づいて説明するが、上述の第一の実施の形態と同一又は同様な部材、部分には同一の符号を用いて説明を省略し、第一の実施の形態と異なる構成について説明する。   Next, other embodiments and modifications will be described with reference to the accompanying drawings, but the same or similar members and parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted. A configuration different from that of the first embodiment will be described.

図３に示すように、第二の実施の形態による鋼材のコンクリート構造物への接合構造では、あと施工アンカー２１の定着部２２は軸部２３と軸部２３の周囲に形成されたリブ２４とから構成される。定着部２２は異形鉄筋のような形状をしている。
貫通孔４の内周面は定着部２２の外周面に比べて大きく形成されている。 As shown in FIG. 3, in the joining structure of the steel material to the concrete structure according to the second embodiment, the fixing portion 22 of the post-installed anchor 21 includes a shaft portion 23 and ribs 24 formed around the shaft portion 23. Consists of The fixing unit 22 has a shape like a deformed reinforcing bar.
The inner peripheral surface of the through hole 4 is formed larger than the outer peripheral surface of the fixing portion 22.

第二の実施の形態では、貫通孔４の内周面は定着部２２の外周面に比べて大きく形成されていると共に、定着部２２のリブ２４から図中の矢印の方向に圧縮ストラットが形成されるので、第一の実施の形態と同様の効果を奏する。
なお、リブ２４に代わって、軸部２３の周囲にねじ山などの突起が形成されてもよい。 In the second embodiment, the inner peripheral surface of the through hole 4 is formed larger than the outer peripheral surface of the fixing unit 22, and a compression strut is formed from the rib 24 of the fixing unit 22 in the direction of the arrow in the figure. Therefore, the same effects as those of the first embodiment are obtained.
In place of the ribs 24, protrusions such as threads may be formed around the shaft portion 23.

図４に示すように、第一の実施の形態の変形例による鋼材のコンクリート構造物への接合構造では、貫通孔３１は、テーパー形状のテーパー部３２と円筒形状の円筒部３３とが連結した形状である。鋼板３に対して、テーパー部３２が鋼板３のコンクリート構造物１０との接合面側３ａとなり、円筒部３３が反対側３ｂとなるように形成される。
貫通孔３１の内周面は定着部１２の外周面に比べて大きく形成されている。 As shown in FIG. 4, in the joining structure of the steel material to the concrete structure according to the modification of the first embodiment, the through hole 31 has a tapered portion 32 and a cylindrical portion 33 connected to each other. Shape. The tapered portion 32 is formed on the steel plate 3 so that the taper portion 32 becomes the joint surface side 3a of the steel plate 3 with the concrete structure 10 and the cylindrical portion 33 becomes the opposite side 3b.
The inner peripheral surface of the through hole 31 is formed larger than the outer peripheral surface of the fixing unit 12.

第一の実施の形態の変形例による鋼材のコンクリート構造物への接合構造では、貫通孔３１の内周面は定着部１２の外周面に比べて大きく形成されていると共に、定着部１２の頭部１４からテーパー部３２に向かう方向（図中の矢印の方向）に圧縮ストラットが形成されるので、第一の実施の形態と同様の効果を奏する。   In the joining structure of the steel material to the concrete structure according to the modification of the first embodiment, the inner peripheral surface of the through hole 31 is formed larger than the outer peripheral surface of the fixing unit 12 and the head of the fixing unit 12 is formed. Since the compression strut is formed in the direction from the portion 14 toward the tapered portion 32 (in the direction of the arrow in the figure), the same effects as those of the first embodiment can be obtained.

図５に示すように、第一の実施の形態の他の変形例による鋼材のコンクリート構造物への接合構造では、貫通孔４１は、内径の異なる第一および第二の円筒部４２、４３が連結した形状の座グリ孔となっている。第一の円筒部４２は第二の円筒部４３よりも小径で、
鋼板３のコンクリート構造物１０との接合面側３ａに第一の円筒部４２、その反対側３ｂに第二の円筒部４３が配置されている。第一および第二の円筒部４２、４３の連結している部分には、鋼板３の面に平行な連結部４４を備えている。連結部４４は、あと施工アンカー１の定着部１２の頭部１４よりもコンクリート構造物１０側に配置される。
貫通孔４１の内周面は定着部１２の外周面に比べて大きく形成されている。 As shown in FIG. 5, in the structure for joining a steel material to a concrete structure according to another modification of the first embodiment, the through hole 41 has first and second cylindrical portions 42 and 43 having different inner diameters. It is a countersunk hole with a connected shape. The first cylindrical portion 42 is smaller in diameter than the second cylindrical portion 43,
A first cylindrical portion 42 is disposed on the joint surface side 3a of the steel plate 3 with the concrete structure 10, and a second cylindrical portion 43 is disposed on the opposite side 3b. A connecting portion 44 parallel to the surface of the steel plate 3 is provided at a portion where the first and second cylindrical portions 42 and 43 are connected. The connecting portion 44 is disposed closer to the concrete structure 10 than the head portion 14 of the fixing portion 12 of the post-construction anchor 1.
The inner peripheral surface of the through hole 41 is formed larger than the outer peripheral surface of the fixing unit 12.

第一の実施の形態の他の変形例による鋼材のコンクリート構造物への接合構造では、貫通孔４１の内周面は定着部１２の外周面に比べて大きく形成されていると共に、定着部１２の頭部１４から貫通孔４１の連結部４４に向かう方向（図中の矢印の方向）に圧縮ストラットが形成されるので、第一の実施の形態と同様の効果を奏する。   In the joining structure of the steel material to the concrete structure according to another modification of the first embodiment, the inner peripheral surface of the through hole 41 is formed larger than the outer peripheral surface of the fixing unit 12, and the fixing unit 12. Since the compression strut is formed in the direction from the head 14 toward the connecting portion 44 of the through hole 41 (in the direction of the arrow in the figure), the same effects as those of the first embodiment are obtained.

図６に示すように、第一の実施の形態の更に他の変形例による鋼材のコンクリート構造物への接合構造では、貫通孔５１の断面形状が階段状となっている。貫通孔５１は鋼板３のコンクリート構造物１０への接合面側３ａから反対側３ｂに向かって徐々に大きくなっている。貫通孔５１は、テーパー形状でなく大きさの異なる４つの円筒部５２〜５５が徐々に大きくなるように連なった形状である。なお、本変形例では、４つの円筒部５２〜５５を連結しているが、連結される円筒部の数は２つ以上であればよい。
それぞれとなり合う円筒部が連結している部分は、鋼板３の面に平行な連結部５６を備えている。貫通孔５１には複数の連結部５６が形成されることになるが、１つ以上の連結部５６があと施工アンカー１の定着部１２の頭部１４よりもコンクリート構造物１０側となるように配置される。
貫通孔５１の内周面は定着部１２の外周面に比べて大きく形成されている。 As shown in FIG. 6, in the joint structure of the steel material to the concrete structure according to still another modification of the first embodiment, the cross-sectional shape of the through hole 51 is stepped. The through-hole 51 gradually increases from the joint surface side 3a to the concrete structure 10 of the steel plate 3 toward the opposite side 3b. The through hole 51 is not a tapered shape, but has a shape in which four cylindrical portions 52 to 55 having different sizes are connected so as to gradually increase. In addition, in this modification, although the four cylindrical parts 52-55 are connected, the number of the cylindrical parts connected should just be two or more.
A portion where the adjacent cylindrical portions are connected includes a connecting portion 56 parallel to the surface of the steel plate 3. A plurality of connecting portions 56 are formed in the through hole 51, but one or more connecting portions 56 are closer to the concrete structure 10 side than the head portion 14 of the fixing portion 12 of the post-installed anchor 1. Be placed.
The inner peripheral surface of the through hole 51 is formed larger than the outer peripheral surface of the fixing unit 12.

第一の実施の形態の更に他の変形例による鋼材のコンクリート構造物への接合構造では、貫通孔５１の内周面は定着部１２の外周面に比べて大きく形成されていると共に、定着部１２の頭部１４から貫通孔５１の連結部５６に向かう方向（図中の矢印の方向）に圧縮ストラットが形成されるので、第一の実施の形態と同様の効果を奏する。   In the joining structure of the steel material to the concrete structure according to still another modification of the first embodiment, the inner peripheral surface of the through hole 51 is formed larger than the outer peripheral surface of the fixing unit 12, and the fixing unit Since the compression struts are formed in the direction from the 12 heads 14 toward the connecting portion 56 of the through hole 51 (in the direction of the arrow in the figure), the same effects as those of the first embodiment are achieved.

以上、本発明による鋼材のコンクリート構造物への接合構造の実施の形態について説明したが、本発明は上記の実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。
例えば、上述した実施の形態では、コンクリート構造物１０に鋼板３を固定しているが、鋼板３に代わってＨ形鋼や山形鋼などの形鋼をコンクリート構造物に接合してもよく、また、アルミなどの他の金属からなる部材や、炭素繊維強化プラスチックなどの金属以外からなる部材を接合してもよい。
また、上記の実施の形態では、既存のコンクリート構造物１０にあと施工アンカー１を設置して鋼板３を接合しているが、新設のコンクリート構造物にコンクリートの打設と共に埋設されるアンカー部材に本実施の形態による定着部を形成して、鋼板３を接合してもよい。
また、上記の実施の形態では、あと施工アンカー１の先端部に定着部１２が設けられているが、定着部１２をあと施工アンカー１の先端部に設けずに、定着部１２からあと施工アンカー１の先端部が突出する形状としてもよい。
また、上記の第一の実施の形態では、あと施工アンカー１の定着部１２に板状の頭部１４を設けているが、頭部１４は、軸部１３よりも太い形状であれば、板状でなく半球状や略半球状、皿型状などの他の形状としてもよい。
また、上記の第一の実施の形態の各変形例のあと施工アンカー１の定着部１２を、軸部２３にリブ２４が形成された第二の実施の形態によるあと施工アンカー２１の定着部２２としてもよい。
また、本実施の形態では、コンクリート構造物は鉄筋コンクリートの建物などとしているが、建物に代わってコンクリート製の工作物や部材などとしてもよい。 As mentioned above, although embodiment of the joining structure to the concrete structure of the steel material by this invention was described, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the meaning. is there.
For example, in the above-described embodiment, the steel plate 3 is fixed to the concrete structure 10, but instead of the steel plate 3, a shape steel such as an H-shaped steel or an angle steel may be joined to the concrete structure, Alternatively, a member made of another metal such as aluminum or a member made of other than a metal such as carbon fiber reinforced plastic may be joined.
Moreover, in said embodiment, although the post-construction anchor 1 is installed in the existing concrete structure 10 and the steel plate 3 is joined, the anchor member embed | buried with concrete placement in the new concrete structure is used. The fixing portion according to the present embodiment may be formed and the steel plate 3 may be joined.
In the above embodiment, the fixing unit 12 is provided at the distal end portion of the post-installation anchor 1, but the post-installation anchor 12 is not provided at the distal end portion of the post-construction anchor 1, and the post-installation anchor 12 is provided. It is good also as a shape from which the front-end | tip part of 1 protrudes.
Moreover, in said 1st embodiment, although the plate-shaped head part 14 is provided in the fixing | fixed part 12 of the post-installation anchor 1, if the head part 14 is thicker than the axial part 13, it will be board | plate. It is good also as other shapes, such as a hemisphere, a substantially hemisphere, and a dish shape, not a shape.
In addition, the fixing portion 12 of the post-construction anchor 1 according to the second embodiment in which the ribs 24 are formed on the shaft portion 23 is used as the fixing portion 22 of the post-construction anchor 1 according to each modification of the first embodiment. It is good.
In this embodiment, the concrete structure is a reinforced concrete building or the like, but may be a concrete work or member instead of the building.

１、２１ あと施工アンカー
２ 孔部
３ 鋼板（被接合部材）
４、３１、４１、５１ 貫通孔
５ グラウト材（充填材）
１０ コンクリート構造物
１２、２２ 定着部
１４ 頭部（凸部） 1, 21 Post-installed anchor 2 Hole 3 Steel plate (joined member)
4, 31, 41, 51 Through hole 5 Grout material (filler)
10 Concrete structure 12, 22 Fixing part 14 Head (convex part)

Claims (4)

コンクリート構造物に鋼材などの被接合部材を接合する構造であって、
前記コンクリート構造物に定着部を突出させた状態で埋設されるアンカー部材と、
前記被接合部材に形成されて、前記アンカー部材の定着部が挿入される貫通孔と、
前記貫通孔内に充填される充填材と、を備え、前記定着部は側面に凸部を備えて、前記貫通孔は前記定着部の外径よりも大きく形成されると共に、前記コンクリート構造物への接合面側から反対側に向かって内径が大きくなることを特徴とする被接合部材のコンクリート構造物への接合構造。 A structure in which a member to be joined such as steel is joined to a concrete structure,
An anchor member embedded in a state where the fixing portion protrudes from the concrete structure;
A through hole formed in the bonded member into which the fixing portion of the anchor member is inserted;
A filler filled in the through hole, the fixing portion has a convex portion on a side surface, and the through hole is formed to be larger than an outer diameter of the fixing portion, and to the concrete structure. The joining structure to the concrete structure of the member to be joined is characterized in that the inner diameter increases from the joining surface side to the opposite side. 前記定着部は、前記アンカー部材の先端部に設けられていることを特徴とする請求項１に記載の被接合部材のコンクリート構造物への接合構造。   The said fixing | fixed part is provided in the front-end | tip part of the said anchor member, The joining structure to the concrete structure of the to-be-joined member of Claim 1 characterized by the above-mentioned. 前記定着部の凸部は、前記定着部の軸方向に直交する板状の部材によって形成されていることを特徴とする請求項１または２に記載の被接合部材のコンクリート構造物への接合構造。   The structure for joining a member to be joined to a concrete structure according to claim 1 or 2, wherein the convex part of the fixing part is formed by a plate-like member orthogonal to the axial direction of the fixing part. . 前記貫通孔は、前記コンクリート構造物への接合面側から反対側に向かって径が大きくなるテーパー形状であることを特徴とする請求項１乃至３のいずれかに記載の被接合部材のコンクリート構造物への接合構造。   The concrete structure of a member to be joined according to any one of claims 1 to 3, wherein the through hole has a tapered shape having a diameter that increases from a joint surface side to the concrete structure toward the opposite side. Bonding structure to objects.
JP2009052422A 2009-03-05 2009-03-05 Joining structure to the concrete structure of the member to be joined Expired - Fee Related JP5207070B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015055046A (en) * 2013-09-10 2015-03-23 清水建設株式会社 Steel pipe joint structure

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JPS5043506U (en) * 1973-08-16 1975-05-01
JP3032052U (en) * 1996-06-05 1996-12-13 タカラ技研株式会社 Construction equipment for pier reinforcement work
JPH09291542A (en) * 1996-04-26 1997-11-11 Artes:Kk Reinforced base of column using u-shaped anchor bolt
JP2005023769A (en) * 2003-07-03 2005-01-27 Takumi Orimoto Structural Engineering & Associates Fixing method for base plate having large bolt hole and anchor bolt
JP2007085034A (en) * 2005-09-20 2007-04-05 Taisei Corp Anchorage structure of anchor member

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JPS5043506U (en) * 1973-08-16 1975-05-01
JPH09291542A (en) * 1996-04-26 1997-11-11 Artes:Kk Reinforced base of column using u-shaped anchor bolt
JP3032052U (en) * 1996-06-05 1996-12-13 タカラ技研株式会社 Construction equipment for pier reinforcement work
JP2005023769A (en) * 2003-07-03 2005-01-27 Takumi Orimoto Structural Engineering & Associates Fixing method for base plate having large bolt hole and anchor bolt
JP2007085034A (en) * 2005-09-20 2007-04-05 Taisei Corp Anchorage structure of anchor member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015055046A (en) * 2013-09-10 2015-03-23 清水建設株式会社 Steel pipe joint structure

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