JP2017190629A - Joint structure of precast member - Google Patents

Joint structure of precast member Download PDF

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JP2017190629A
JP2017190629A JP2016081181A JP2016081181A JP2017190629A JP 2017190629 A JP2017190629 A JP 2017190629A JP 2016081181 A JP2016081181 A JP 2016081181A JP 2016081181 A JP2016081181 A JP 2016081181A JP 2017190629 A JP2017190629 A JP 2017190629A
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precast
main
joining
plate
concrete
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JP6861472B2 (en
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健 北村
Takeshi Kitamura
健 北村
郁夫 岩崎
Ikuo Iwasaki
郁夫 岩崎
学 細谷
Manabu Hosoya
学 細谷
一郎 岩城
Ichiro Iwaki
一郎 岩城
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Taisei Corp
Nihon University
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Nihon University
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Abstract

【課題】プレキャスト部材と他のコンクリート部材との間隔を小さくするとともに、施工の手間を低減することができるプレキャスト部材の接合構造を提供する。【解決手段】プレキャスト部材を他のコンクリート部材に接合するための接合構造である。プレキャスト部材の接合端面と、他のコンクリート部材の接合端面との間には充填材が充填されている。プレキャスト部材および他のコンクリート部材の両主筋２０，３０において、第二主筋３０の先端部にプレート７０が接合されるとともに、第一主筋２０の先端部に筒状部材８０が接合されている。筒状部材８０の周壁部には開口部８２が形成されている。開口部８２に第二主筋３０が挿通され、プレート７０が筒状部材８０内に配置されている。【選択図】図１PROBLEM TO BE SOLVED: To provide a joint structure of a precast member capable of reducing the distance between the precast member and another concrete member and reducing the labor of construction. SOLUTION: This is a joining structure for joining a precast member to another concrete member. A filler is filled between the joint end face of the precast member and the joint end face of another concrete member. In both main bars 20 and 30 of the precast member and other concrete members, the plate 70 is joined to the tip of the second main bar 30, and the tubular member 80 is joined to the tip of the first main bar 20. An opening 82 is formed in the peripheral wall portion of the tubular member 80. The second main bar 30 is inserted through the opening 82, and the plate 70 is arranged in the tubular member 80. [Selection diagram] Fig. 1

Description

本発明は、プレキャスト部材を他のコンクリート部材に接合するための接合構造に関する。   The present invention relates to a joining structure for joining a precast member to another concrete member.

ビルなどの構造物を建築する場合に、工場で予め製作されたコンクリート製のプレキャスト部材を現場に搬入し、プレキャスト部材を他のコンクリート部材（例えば、既設のコンクリート部材や他のプレキャスト部材）に接合することで、床版や梁を構築する工法が用いられている。   When building a structure such as a building, a concrete precast member manufactured in advance at the factory is brought into the field, and the precast member is joined to another concrete member (for example, an existing concrete member or another precast member). By doing so, construction methods for building floor slabs and beams are used.

プレキャスト部材を他のコンクリート部材に接合するための接合構造としては、プレキャスト部材および他のコンクリート部材から主筋を突出させた状態で、プレキャスト部材と他のコンクリート部材とを間隔を空けて配置し、プレキャスト部材と他のコンクリート部材との間にグラウトを充填しているものがある。   As a joining structure for joining a precast member to another concrete member, the precast member and the other concrete member are arranged with a space in a state where the main bars protrude from the precast member and the other concrete member. There is one in which grout is filled between a member and another concrete member.

前記した接合構造では、プレキャスト部材の主筋と、他のコンクリート部材の主筋とを重ねて配置する重ね継手を用いる場合がある（例えば、特許文献１参照）。
また、前記した接合構造では、プレキャスト部材の主筋と、他のコンクリート部材の主筋とをパイプの両端に挿入する機械式継手を用いる場合がある（例えば、特許文献２参照）。 In the above-described joint structure, a lap joint in which the main bars of the precast member and the main bars of the other concrete member are arranged in an overlapping manner may be used (for example, see Patent Document 1).
Moreover, in the above-described joining structure, a mechanical joint that inserts the main reinforcement of the precast member and the main reinforcement of the other concrete member into both ends of the pipe may be used (for example, see Patent Document 2).

特開２０１６−００８４１０号公報JP, 2006-008410, A 特開平０９−１４４２１３号公報JP 09-144213 A

前記した重ね継手では、両主筋の先端部同士を大きく重ね合わせる必要がある。また、機械式継手では、パイプと主筋との重ね代を確保する必要がある。このように、重ね継手および機械式継手では、プレキャスト部材と他のコンクリート部材との間隔が大きくなるため、接合端面からの主筋の突出量が大きくなる。
したがって、重ね継手または機械式継手を用いた接合構造では、グラウトの充填量や主筋の量が多くなり、施工コストが高くなるという問題がある。 In the lap joint described above, it is necessary to largely overlap the tip portions of both main bars. Moreover, in a mechanical joint, it is necessary to ensure the allowance for a pipe and a main reinforcement. As described above, in the lap joint and the mechanical joint, the distance between the precast member and the other concrete member is increased, so that the protrusion amount of the main bar from the joint end surface is increased.
Therefore, in a joining structure using a lap joint or a mechanical joint, there is a problem that the amount of grout filling and the amount of main bars increase, and the construction cost increases.

さらに、機械式継手では、パイプの両端に主筋を挿入する作業が煩雑であるため、施工期間が長くなるという問題がある。   Furthermore, in the mechanical joint, there is a problem that the construction period becomes long because the operation of inserting the main bars at both ends of the pipe is complicated.

本発明は、前記した問題を解決し、プレキャスト部材と他のコンクリート部材との間隔を小さくするとともに、施工の手間を低減することができるプレキャスト部材の接合構造を提供することを課題とする。   This invention solves an above-described problem, and makes it a subject to provide the joining structure of the precast member which can reduce the effort of construction while reducing the space | interval of a precast member and another concrete member.

前記課題を解決するため、本発明は、プレキャスト部材を他のコンクリート部材に接合するための接合構造である。前記プレキャスト部材の接合端面と、前記他のコンクリート部材の接合端面との間に充填材が充填されている。前記プレキャスト部材および前記他のコンクリート部材の両主筋において、一方の前記主筋の先端部にプレートが接合されるとともに、他方の前記主筋の先端部に筒状部材が接合されている。前記筒状部材の周壁部には、開口縁部から延びている開口部が形成されており、前記開口部に一方の前記主筋が挿通され、前記プレートが前記筒状部材内に配置されている。
なお、本発明において、プレキャスト部材の接合端面と、他のコンクリート部材の接合端面とを間隔を空けて配置した場合には、両接合端面の間の空間に充填材を充填する。また、プレキャスト部材の接合端面と、他のコンクリート部材の接合端面とを密着させた場合には、両接合端面の間に配置された筒状部材内の空間に充填材を充填する。 In order to solve the above problems, the present invention is a joint structure for joining a precast member to another concrete member. A filler is filled between the joint end surface of the precast member and the joint end surface of the other concrete member. In both main bars of the precast member and the other concrete member, a plate is joined to the tip of one of the main bars, and a tubular member is joined to the tip of the other main bar. An opening extending from an opening edge is formed in the peripheral wall portion of the cylindrical member, one of the main bars is inserted into the opening, and the plate is disposed in the cylindrical member. .
In the present invention, when the joint end face of the precast member and the joint end face of the other concrete member are arranged with a space therebetween, the space between the joint end faces is filled with the filler. Further, when the joining end face of the precast member and the joining end face of another concrete member are brought into close contact with each other, the space in the cylindrical member disposed between the joining end faces is filled with the filler.

本発明の接合構造では、両主筋の先端部に接合されたプレートおよび筒状部材を組み合わせることで、充填材への主筋の定着性能を確保することができる。これにより、本発明の接合構造では、接合端面からの主筋の突出量を小さくすることができ、プレキャスト部材と他のコンクリート部材との間隔を小さくすることができるため、充填材を減らすことができる。   In the joining structure of the present invention, the fixing performance of the main bars to the filler can be ensured by combining the plate and the cylindrical member joined to the tip portions of both main bars. Thereby, in the joining structure of this invention, since the protrusion amount of the main reinforcement from a joining end surface can be made small and the space | interval of a precast member and another concrete member can be made small, a filler can be reduced. .

本発明の接合構造では、一方の主筋のプレートが筒状部材に囲まれているため、両主筋の間で応力を効率良く伝達することができる。   In the joint structure of the present invention, since the plate of one main bar is surrounded by the cylindrical member, stress can be efficiently transmitted between both main bars.

本発明の接合構造では、他方の主筋に設けられた筒状部材の開口部に対して、一方の主筋を側方から入り込ませることで、プレートを筒状部材内に挿入することができる。   In the joining structure of the present invention, the plate can be inserted into the cylindrical member by allowing one of the main bars to enter from the side of the opening of the cylindrical member provided on the other main bar.

本発明の接合構造において、プレキャスト部材と他のコンクリート部材との間に複数の主筋、プレートおよび筒状部材を組み合わせて配置した場合には、プレキャスト部材と他のコンクリート部材との間に充填材を充填することで、複数の主筋、プレートおよび筒状部材を一括してグラウトに定着させることができる。   In the joint structure of the present invention, when a plurality of main bars, plates, and cylindrical members are arranged in combination between the precast member and the other concrete member, a filler is provided between the precast member and the other concrete member. By filling, a plurality of main bars, plates and cylindrical members can be fixed to the grout at once.

前記した本発明の接合構造において、前記筒状部材を前記プレキャスト部材または前記他のコンクリート部材の内部に入り込ませた場合には、プレキャスト部材と他のコンクリート部材との間隔をより小さくすることができる。   In the joint structure of the present invention described above, when the cylindrical member is inserted into the precast member or the other concrete member, the interval between the precast member and the other concrete member can be further reduced. .

本発明の接合構造では、主筋の量を減らすとともに、プレキャスト部材と他のコンクリート部材との間に充填する充填材を減らすことができるため、施工コストを低減することができる。
本発明の接合構造では、一方の主筋のプレートが筒状部材に囲まれているため、両主筋の間で応力を効率良く伝達することができる。
本発明の接合構造では、筒状部材の開口部に対して、一方の主筋を側方から入り込ませることで、プレートと筒状部材とを簡単に組み合わせることができるため、施工期間を短くすることができる。 In the joining structure of the present invention, the amount of main bars can be reduced, and the filler filled between the precast member and the other concrete member can be reduced, so that the construction cost can be reduced.
In the joint structure of the present invention, since the plate of one main bar is surrounded by the cylindrical member, stress can be efficiently transmitted between both main bars.
In the joint structure of the present invention, the plate and the cylindrical member can be easily combined by allowing one main bar to enter from the side of the opening of the cylindrical member, thereby shortening the construction period. Can do.

本発明の実施形態に係る接合構造を示した図で、（ａ）はプレートと筒状部材とを組み合わせた状態の斜視図、（ｂ）はプレートと筒状部材とを組み合わせる前の斜視図である。It is the figure which showed the joining structure which concerns on embodiment of this invention, (a) is a perspective view of the state which combined the plate and the cylindrical member, (b) is the perspective view before combining a plate and the cylindrical member. is there. 本発明の実施形態に係る接合構造を示した平面断面図である。It is the plane sectional view showing the junction structure concerning the embodiment of the present invention. 本発明の実施形態に係る接合構造の変形例を示した図で、（ａ）は筒状部材をコンクリート部材に入り込ませた構成の平面断面図、（ｂ）は筒状部材をプレキャスト部材またはコンクリート部材に入り込ませた構成の平面断面図である。It is the figure which showed the modification of the joining structure which concerns on embodiment of this invention, (a) is plane sectional drawing of the structure which made the cylindrical member enter the concrete member, (b) is a precast member or concrete with a cylindrical member It is a plane sectional view of the composition made to enter the member. 本発明の実施形態に係る接合構造の変形例を示した図で、（ａ）は三角形の筒状部材を示した平面断面図、（ｂ）は円筒状の筒状部材を示した平面断面図である。It is the figure which showed the modification of the joining structure which concerns on embodiment of this invention, (a) is plane sectional drawing which showed the triangular cylindrical member, (b) is plane sectional drawing which showed the cylindrical cylindrical member It is.

本発明の実施形態について、適宜図面を参照しながら詳細に説明する。
以下の説明において、前後左右方向とは、実施形態の接合構造を説明する上で便宜上設定したものであり、接合構造を構成する各部材の配置や向きを限定するものではない。 Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the front, rear, left, and right directions are set for convenience in describing the joint structure of the embodiment, and do not limit the arrangement and orientation of each member constituting the joint structure.

本実施形態の接合構造１は、図２に示すように、プレキャスト部材３をコンクリート部材２（特許請求の範囲における「他のコンクリート部材」）に接合するための構造である。本実施形態のプレキャスト部材３およびコンクリート部材２は、構造物の床版を構成するものである。
本実施形態では、コンクリート部材２の接合端面２ａの前方にプレキャスト部材３の接合端面３ａが配置されている。このように、プレキャスト部材３の接合端面３ａと、コンクリート部材２の接合端面２ｂとは、前後方向（主筋２０，３０の延長方向）に間隔を空けて配置されており、両接合端面２ａ，３ａの間に接合空間４が形成されている。 The joining structure 1 of this embodiment is a structure for joining the precast member 3 to the concrete member 2 ("other concrete member" in the claims) as shown in FIG. The precast member 3 and the concrete member 2 of the present embodiment constitute a floor slab of a structure.
In the present embodiment, the joint end surface 3 a of the precast member 3 is disposed in front of the joint end surface 2 a of the concrete member 2. Thus, the joining end surface 3a of the precast member 3 and the joining end surface 2b of the concrete member 2 are arranged at an interval in the front-rear direction (extension direction of the main reinforcing bars 20, 30), and both the joining end surfaces 2a, 3a. A joint space 4 is formed between the two.

本実施形態のコンクリート部材２は、工場で予め製作された鉄筋コンクリート製のプレキャスト部材である。なお、施工現場においてコンクリートを打設して、コンクリート部材２を構築してもよい。
コンクリート部材２には、複数の第一主筋２０が軸方向（前後方向）に配筋されている。第一主筋２０は、異形鉄筋であり、コンクリート部材２の接合端面２ａから前方に向けて突出している。第一主筋２０の先端部は、接合空間４内に配置されている。 The concrete member 2 of the present embodiment is a precast member made of reinforced concrete that is manufactured in advance at a factory. The concrete member 2 may be constructed by placing concrete at the construction site.
The concrete member 2 has a plurality of first main bars 20 arranged in the axial direction (front-rear direction). The first main reinforcing bar 20 is a deformed reinforcing bar and protrudes forward from the joint end surface 2 a of the concrete member 2. The distal end portion of the first main muscle 20 is disposed in the joint space 4.

第一主筋２０の先端部には、図１（ｂ）に示すように、筒状部材８０が接合されている。筒状部材８０は、前後左右の壁部が形成された鋼製の角筒状の部材であり、上面および下面が開口している。本実施形態の筒状部材８０は、溝形鋼を用いて形成されている。
図２に示すように、筒状部材８０の後面８０ａの中央部には、第一主筋２０の先端面が溶接または摩擦圧接により接合されている。第一主筋２０は、筒状部材８０の後面８０ａに対して垂直に配置されている。
なお、筒状部材８０と第一主筋２０との接続方法は限定されるものではなく、例えば、筒状部材８０の後面８０ａにねじ穴を形成したり、後面８０ａにナットを溶接したりするとともに、第一主筋２０の先端部に雄ねじを形成し、筒状部材８０に第一主筋２０の先端部を螺合させてもよい。 As shown in FIG. 1B, a tubular member 80 is joined to the distal end portion of the first main muscle 20. The tubular member 80 is a steel square tubular member in which front, rear, left and right wall portions are formed, and an upper surface and a lower surface are opened. The cylindrical member 80 of this embodiment is formed using channel steel.
As shown in FIG. 2, the front end surface of the first main bar 20 is joined to the central portion of the rear surface 80a of the tubular member 80 by welding or friction welding. The first main bars 20 are arranged perpendicular to the rear surface 80 a of the tubular member 80.
In addition, the connection method of the cylindrical member 80 and the 1st main reinforcement 20 is not limited, For example, while forming a screw hole in the rear surface 80a of the cylindrical member 80, or welding a nut to the rear surface 80a. Alternatively, a male screw may be formed at the distal end portion of the first main muscle 20, and the distal end portion of the first main muscle 20 may be screwed into the tubular member 80.

筒状部材８０の前壁８１には、図１（ｂ）に示すように、上側の開口縁部８０ｂから下側の開口縁部８０ｃに亘って直線状の開口部８２が形成されている。
このように、筒状部材８０の周壁部の前部は、上下方向に延びている開口部８２によって切り開かれている。開口部８２の左右方向の幅は、後記する第二主筋３０の直径よりも大きく形成されている。 As shown in FIG. 1B, a linear opening 82 is formed in the front wall 81 of the tubular member 80 from the upper opening edge 80b to the lower opening edge 80c.
Thus, the front part of the peripheral wall part of the cylindrical member 80 is cut open by the opening part 82 extended in the up-down direction. The width in the left-right direction of the opening 82 is formed to be larger than the diameter of the second main muscle 30 described later.

プレキャスト部材３は、図２に示すように、工場で予め製作された鉄筋コンクリート製のプレキャスト部材である。
プレキャスト部材３には、コンクリート部材２と同様に、複数の第二主筋３０が配筋されている。第二主筋３０は、プレキャスト部材３の接合端面３ａから後方に向けて突出しており、第二主筋３０の先端部は接合空間４内に配置されている。 As shown in FIG. 2, the precast member 3 is a reinforced concrete precast member manufactured in advance in a factory.
Similar to the concrete member 2, a plurality of second main bars 30 are arranged in the precast member 3. The second main reinforcing bar 30 protrudes rearward from the joint end surface 3 a of the precast member 3, and the tip of the second main reinforcing bar 30 is disposed in the joint space 4.

第二主筋３０の先端部には、図１（ｂ）に示すように、プレート７０が接合されている。プレート７０は、円板状の鋼板である。
図２に示すように、プレート７０の前面７０ａ（プレキャスト部材３側の面）の中心部に第二主筋３０の先端面が溶接または摩擦圧接により接合されている。第二主筋３０は、プレート７０の前面７０ａに対して垂直に配置されている。
なお、プレート７０と第二主筋３０との接続方法は限定されるものではなく、例えば、プレート７０の前面７０ａにねじ穴を形成したり、前面７０ａにナットを溶接したりするとともに、第二主筋３０の先端部に雄ねじを形成し、プレート７０に第二主筋３０の先端部を螺合させてもよい。 As shown in FIG. 1B, a plate 70 is joined to the distal end portion of the second main muscle 30. The plate 70 is a disk-shaped steel plate.
As shown in FIG. 2, the front end surface of the second main reinforcing bar 30 is joined to the center portion of the front surface 70a (the surface on the precast member 3 side) of the plate 70 by welding or friction welding. The second main bars 30 are arranged perpendicular to the front surface 70 a of the plate 70.
In addition, the connection method of the plate 70 and the 2nd main reinforcement 30 is not limited, For example, while forming a screw hole in the front surface 70a of the plate 70, or welding a nut to the front surface 70a, the 2nd main reinforcement A male screw may be formed at the tip of 30 and the tip of the second main muscle 30 may be screwed into the plate 70.

第二主筋３０は、筒状部材８０の開口部８２に対して前後方向に挿通されている。そして、第二主筋３０の先端部に接合されたプレート７０は、筒状部材８０内に配置されており、プレート７０は、筒状部材８０の周壁部に囲まれている（図１（ａ）参照）。   The second main reinforcement 30 is inserted in the front-rear direction with respect to the opening 82 of the cylindrical member 80. And the plate 70 joined to the front-end | tip part of the 2nd main reinforcement 30 is arrange | positioned in the cylindrical member 80, and the plate 70 is surrounded by the surrounding wall part of the cylindrical member 80 (FIG. 1 (a)). reference).

接合空間４には、グラウトＧ（特許請求の範囲における「充填材」）が充填されている。本実施形態のグラウトＧは、セメント系のモルタルである。なお、グラウトＧ（充填材）には、繊維などの補強材を入れたり、膨張材などの混和材を添加したりしてもよく、グラウトＧの配合は限定されるものではない。
グラウトＧによって接合空間４全体が埋められている。したがって、両主筋２０，３０の先端部、プレート７０および筒状部材８０もグラウトＧ内に埋められている。さらに、グラウトＧは筒状部材８０内にも充填されている。 The joint space 4 is filled with grout G (“filler” in the claims). The grout G of this embodiment is a cement-based mortar. In addition, the grout G (filler) may contain a reinforcing material such as a fiber or an admixture such as an expansion material, and the composition of the grout G is not limited.
The entire joint space 4 is filled with the grout G. Therefore, the tip portions of both main muscles 20 and 30, the plate 70 and the cylindrical member 80 are also embedded in the grout G. Further, the grout G is also filled in the cylindrical member 80.

次に、本実施形態の接合構造１を構築する手順について説明する。
まず、図２に示すように、コンクリート部材２の接合端面２ａの前方にプレキャスト部材３を移動させ、プレキャスト部材３の接合端面３ａとコンクリート部材２の接合端面２ａとを前後方向に間隔を空けて配置する。 Next, a procedure for constructing the joint structure 1 of the present embodiment will be described.
First, as shown in FIG. 2, the precast member 3 is moved in front of the joint end surface 2a of the concrete member 2, and the joint end surface 3a of the precast member 3 and the joint end surface 2a of the concrete member 2 are spaced apart in the front-rear direction. Deploy.

このとき、本実施形態では、プレキャスト部材３をコンクリート部材２の上方から下方に向けて移動させる。このようにすると、図１（ｂ）に示すように、第二主筋３０およびプレート７０が、筒状部材８０に対して上方から近づくことになる。
これにより、図１（ａ）に示すように、筒状部材８０の開口部８２に第二主筋３０が入り込むとともに、筒状部材８０内にプレート７０が入り込む。 At this time, in the present embodiment, the precast member 3 is moved from above the concrete member 2 downward. If it does in this way, as shown in FIG.1 (b), the 2nd main reinforcement 30 and the plate 70 will approach the cylindrical member 80 from upper direction.
Thereby, as shown in FIG. 1A, the second main reinforcement 30 enters the opening 82 of the cylindrical member 80, and the plate 70 enters the cylindrical member 80.

このようにして、プレート７０と筒状部材８０とを組み合わせた後に、図２に示すように、接合空間４にグラウトＧを充填する。
接合空間４内でグラウトＧが硬化すると、両主筋２０，３０、プレート７０および筒状部材８０がグラウトＧに定着し、プレキャスト部材３がコンクリート部材２に接合される。 Thus, after combining the plate 70 and the cylindrical member 80, the grout G is filled into the joining space 4, as shown in FIG.
When the grout G is hardened in the joining space 4, both main reinforcing bars 20, 30, the plate 70 and the cylindrical member 80 are fixed to the grout G, and the precast member 3 is joined to the concrete member 2.

以上のような本実施形態の接合構造１では、図２に示すように、両主筋２０，３０の先端部に接合されたプレート７０および筒状部材８０を組み合わせることで、グラウトＧへの両主筋２０，３０の定着性能を確保することができる。
これにより、本実施形態の接合構造１では、両接合端面２ａ，３ａからの両主筋２０，３０の突出量を小さくすることができる。したがって、プレキャスト部材３とコンクリート部材２との間の接合空間４を小さくすることができ、接合空間４に充填するグラウトＧを減らすことができる。
このように、本実施形態の接合構造１では、主筋２０，３０の量を減らすとともに、接合空間４に充填するグラウトＧを減らすことができるため、施工コストを低減することができる。 In the joining structure 1 of the present embodiment as described above, as shown in FIG. 2, both the main muscles to the grout G are combined by combining the plate 70 and the tubular member 80 joined to the distal ends of both the main muscles 20 and 30. A fixing performance of 20, 30 can be ensured.
Thereby, in the joining structure 1 of this embodiment, the protrusion amount of both the main reinforcing bars 20 and 30 from both joining end surfaces 2a and 3a can be made small. Therefore, the joint space 4 between the precast member 3 and the concrete member 2 can be reduced, and the grout G filling the joint space 4 can be reduced.
Thus, in the joining structure 1 of the present embodiment, the amount of the main bars 20 and 30 can be reduced, and the grout G filled in the joining space 4 can be reduced, so that the construction cost can be reduced.

本実施形態の接合構造１では、図１（ａ）に示すように、第二主筋３０のプレート７０が第一主筋２０の筒状部材８０に囲まれているため、両主筋２０，３０の間で応力を効率良く伝達することができる。   In the joining structure 1 of the present embodiment, as shown in FIG. 1A, the plate 70 of the second main muscle 30 is surrounded by the tubular member 80 of the first main muscle 20, so The stress can be transmitted efficiently.

本実施形態の接合構造１を構築するときには、図１（ｂ）に示すように、第二主筋３０およびプレート７０を上方から筒状部材８０に向けて移動させることで、第二主筋３０を筒状部材８０の開口部８２に挿入するとともに、プレート７０を筒状部材８０内に挿入することができる。このように、プレート７０と筒状部材８０とを簡単に組み合わせることができるため、施工期間を短くすることができる。   When constructing the joint structure 1 of the present embodiment, as shown in FIG. 1B, the second main reinforcing bar 30 and the plate 70 are moved from above to the tubular member 80, thereby moving the second main reinforcing bar 30 to the cylinder. The plate 70 can be inserted into the cylindrical member 80 while being inserted into the opening 82 of the cylindrical member 80. Thus, since the plate 70 and the cylindrical member 80 can be easily combined, the construction period can be shortened.

本実施形態の接合構造１では、図２に示すように、接合空間４に複数の主筋２０，３０、プレート７０および筒状部材８０が配置されている場合でも、接合空間４にグラウトＧを充填することで、複数の主筋２０，３０、プレート７０および筒状部材８０を一括してグラウトＧに定着することができる。   In the joining structure 1 of the present embodiment, as shown in FIG. 2, the grout G is filled in the joining space 4 even when the plurality of main bars 20, 30, the plate 70 and the cylindrical member 80 are arranged in the joining space 4. By doing so, the plurality of main bars 20, 30, the plate 70 and the cylindrical member 80 can be fixed to the grout G at once.

以上、本発明の実施形態について説明したが、本発明は前記実施形態に限定されることなく、その趣旨を逸脱しない範囲で適宜に変更が可能である。
本実施形態では、図１（ｂ）に示すように、第二主筋３０にプレート７０を設け、第一主筋２０に筒状部材８０を設けているが、第一主筋２０にプレート７０を設け、第二主筋３０に筒状部材８０を設けてもよい。 The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.
In this embodiment, as shown in FIG.1 (b), the plate 70 is provided in the 2nd principal muscle 30, and the cylindrical member 80 is provided in the 1st principal muscle 20, However, The plate 70 is provided in the 1st principal muscle 20, A cylindrical member 80 may be provided on the second main reinforcement 30.

本実施形態の筒状部材８０では、上側の開口縁部８０ｂから下側の開口縁部８０ｃに亘って開口部８２が形成されているが、上側の開口縁部８０ｂまたは下側の開口縁部８０ｃから上下方向に延びている凹状の開口部を形成してもよい。   In the tubular member 80 of the present embodiment, the opening 82 is formed from the upper opening edge 80b to the lower opening edge 80c. However, the upper opening edge 80b or the lower opening edge is formed. A concave opening extending in the vertical direction from 80c may be formed.

本実施形態の接合構造１では、図２に示すように、筒状部材８０が接合空間４内に配置されているが、図３（ａ）に示すように、筒状部材８０をコンクリート部材２内に入り込ませてもよい。
この構成では、筒状部材８０の前面を接合端面２ａに露出させており、開口部８２が接合端面２ａに開口している。このように、筒状部材８０の少なくとも一部をコンクリート部材２内に入り込ませると、接合空間４をより小さくすることができる。 In the joining structure 1 of this embodiment, as shown in FIG. 2, the cylindrical member 80 is arrange | positioned in the joining space 4, However, as shown to Fig.3 (a), the cylindrical member 80 is made into the concrete member 2. As shown in FIG. You may get inside.
In this configuration, the front surface of the cylindrical member 80 is exposed to the joining end surface 2a, and the opening 82 opens to the joining end surface 2a. As described above, when at least a part of the cylindrical member 80 enters the concrete member 2, the joint space 4 can be further reduced.

なお、プレキャスト部材３の第二主筋３０に筒状部材８０が接合されている場合には、筒状部材８０をプレキャスト部材３内に入り込ませてもよい。
さらに、図３（ｂ）に示すように、第一主筋２０に接合させた筒状部材８０は、他のコンクリート部材２に入り込ませ、第二主筋３０に接合させた筒状部材８０は、プレキャスト部材３に入り込ませてもよい。 In addition, when the cylindrical member 80 is joined to the second main reinforcing bar 30 of the precast member 3, the cylindrical member 80 may enter the precast member 3.
Furthermore, as shown in FIG. 3 (b), the cylindrical member 80 joined to the first main bar 20 enters the other concrete member 2, and the cylindrical member 80 joined to the second main bar 30 is precast. The member 3 may be allowed to enter.

本実施形態の接合構造１では、図２に示すように、プレキャスト部材３の接合端面３ａと、コンクリート部材２の接合端面２ａとが間隔を空けて配置されている。しかしながら、図３（ａ）および（ｂ）に示す接合構造１において、プレキャスト部材３の接合端面３ａと、コンクリート部材２の接合端面２ａとを接着材によって密着させた場合には、両接合端面２ａ，３ａの間に配置された筒状部材８０内の空間にグラウトＧを充填することになる。   In the joining structure 1 of this embodiment, as shown in FIG. 2, the joining end surface 3a of the precast member 3 and the joining end surface 2a of the concrete member 2 are arranged at intervals. However, in the joint structure 1 shown in FIGS. 3A and 3B, when the joint end surface 3a of the precast member 3 and the joint end surface 2a of the concrete member 2 are brought into close contact with an adhesive, both joint end surfaces 2a , 3a, the grout G is filled in the space in the cylindrical member 80.

本実施形態の筒状部材８０は、図２に示すように、角筒状に形成されているが、その形状は限定されるものではない。例えば、図４（ａ）に示すように、筒状部材８０を平面視で三角形の筒状に形成してもよい。さらに、図４（ｂ）に示すように、筒状部材８０を円筒状に形成してもよい。   As shown in FIG. 2, the cylindrical member 80 of the present embodiment is formed in a rectangular tube shape, but the shape is not limited. For example, as shown in FIG. 4A, the cylindrical member 80 may be formed in a triangular cylindrical shape in plan view. Furthermore, as shown in FIG. 4B, the cylindrical member 80 may be formed in a cylindrical shape.

本実施形態のプレート７０は、図１（ｂ）に示すように、円形に形成されているが、プレート７０の形状は限定されるものではなく、例えば、多角形、長円形、楕円形などの形状に形成することもできる。   The plate 70 of the present embodiment is formed in a circular shape as shown in FIG. 1B, but the shape of the plate 70 is not limited, and for example, a polygon, an oval, an ellipse, etc. It can also be formed into a shape.

１ 接合構造
２ コンクリート部材
２ａ 接合端面
３ プレキャスト部材
３ａ 接合端面
４ 接合空間
２０ 第一主筋
３０ 第二主筋
７０ プレート
７０ａ 前面
８０ 筒状部材
８０ａ 後面
８０ｂ 上側の開口縁部
８０ｃ 下側の開口縁部
８１ 前壁
８２ 開口部
Ｇ グラウト（充填材） DESCRIPTION OF SYMBOLS 1 Joining structure 2 Concrete member 2a Joining end surface 3 Precast member 3a Joining end surface 4 Joining space 20 1st main reinforcement 30 2nd main reinforcement 70 Plate 70a Front surface 80 Cylindrical member 80a Rear surface 80b Upper opening edge 80c Lower opening edge 81 Front wall 82 Opening G Grout (filler)

Claims (2)

プレキャスト部材を他のコンクリート部材に接合するための接合構造であって、
前記プレキャスト部材の接合端面と、前記他のコンクリート部材の接合端面との間に充填材が充填されており、
前記プレキャスト部材および前記他のコンクリート部材の両主筋において、
一方の前記主筋の先端部にプレートが接合されるとともに、
他方の前記主筋の先端部に筒状部材が接合されており、
前記筒状部材の周壁部には、開口縁部から延びている開口部が形成され、
前記開口部に一方の前記主筋が挿通され、前記プレートが前記筒状部材内に配置されて
いることを特徴とするプレキャスト部材の接合構造。 A joining structure for joining a precast member to another concrete member,
A filler is filled between the joint end surface of the precast member and the joint end surface of the other concrete member,
In both main bars of the precast member and the other concrete member,
While a plate is joined to the tip of one of the main muscles,
A cylindrical member is joined to the tip of the other main muscle,
An opening extending from the opening edge is formed in the peripheral wall of the cylindrical member,
One of the main bars is inserted into the opening, and the plate is disposed in the cylindrical member. 請求項１に記載のプレキャスト部材の接合構造であって、
前記筒状部材は、前記プレキャスト部材または前記他のコンクリート部材の内部に入り込んでいることを特徴とするプレキャスト部材の接合構造。 The precast member joining structure according to claim 1,
The precast member joining structure, wherein the tubular member is inserted into the precast member or the other concrete member.
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