JP4040190B2 - Mounting structure for joining metal fittings - Google Patents

Mounting structure for joining metal fittings Download PDF

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Publication number
JP4040190B2
JP4040190B2 JP29448698A JP29448698A JP4040190B2 JP 4040190 B2 JP4040190 B2 JP 4040190B2 JP 29448698 A JP29448698 A JP 29448698A JP 29448698 A JP29448698 A JP 29448698A JP 4040190 B2 JP4040190 B2 JP 4040190B2
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Prior art keywords
joining
fitting
joint
end plate
segment
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JP29448698A
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JP2000104496A (en
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博英 橋本
崇 國藤
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石川島建材工業株式会社
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Description

【0001】
【発明の属する技術分野】
この発明は、互いに接合されることにより、掘削穴内にトンネル壁体を構築するセグメントの接合端面に設けられた接合金具の型枠への取り付け構造に関するものである。
【0002】
【従来の技術】
トンネルを構築し得る方法としては、掘削穴の内面側にセグメント(主にコンクリート製あるいはスチール製)を組み立てて筒状壁体を構築する、いわゆるシールド工法が一般的である。
このシールド工法に用いられるセグメントとしては平面視長方形状で円弧版状のものが主流であり、これらセグメント同士をボルトによって接合していた。
このボルトでセグメント同士を接合する構造としては、セグメントの接合面同士を当接させた際に、互いに連通する孔部を有する継手板を埋め込んでおき、これら継手板の孔部へボルトを挿通させ、このボルトへナットを締結させて接合させる構造が一般的である。また、相互のセグメントにナット部材であるインサート金具を埋め込んでおき、隣接するセグメントに貫通させたボルトを締結させて互いに接合させる構造もある。
【0003】
しかしながら、上記構造では、構築現場にて継手の接合面に形成された孔部へボルトを挿通させ、このボルトへナットを締結させたり、相互のセグメントに埋め込んだインサート金具へボルトを締結させるという極めて煩雑な作業を要するため組立時間の短縮には限界があり、また、ロボットによる自動組み付けへの適応が困難であった。
さらには、二次覆工を省略する場合にもボルト・ナットを取り付けるためにセグメントに形成したボルトボックスの閉塞作業を行わなければならず、施工の高速化、省力化を目指す上で新たな継手構造の開発が急務となっているのが現状であった。
【0004】
ここで、本発明者らは、極めて容易に接合することができ、しかも、内面側が平滑なセグメントを開発した。
図4及び図5に示すように、このセグメント1には、その接合端面1aに、接合溝部2が形成されており、この接合溝部2には、複数の断面視C型の接合金具3が設けられ、これら接合金具3同士が、それぞれI型の連結金具4によって互いに連結されるようになっている。
接合金具3は、対向位置に係止片部5を有する鉤形の係止部6が設けられたもので、係止片部5同士によって形成された空間が連結金具4の係合部7が係合する係合空間8とされている。
【0005】
また、係止片部5の内面からなる係止面9は、連結金具4の挿入方向へ向かって狭まるテーパ面とされている。つまり、セグメント1の接合端面1a同士を突き合わせた状態にて、互いに対向する接合金具3の係止面9が、連結金具4の挿入方向後方へ向かって次第に近接するテーパ面とされている。
【0006】
そして、上記セグメント1同士を接合させる場合は、まず、これらセグメント1の接合端面1a同士を互いに当接させ、接合溝2同士からなる挿入穴内へ連結金具4を挿入する。
このようにすると、連結金具4の係合部7のテーパ面からなる係合面10が接合金具3の係止片部5のテーパ面からなる係止面9に当接してスライドすることにより、それぞれの接合金具3同士が互いに引き寄せられ、これにより、互いのセグメント1同士が接合される。
なお、奥側の接合金具3同士を接合させる連結金具4は、その係合部7が、手前側の接合金具3の係合空間8内を通過するように形成されている。
また、図中符号11は、セグメント1を形成するコンクリートとの一体化を図るために設けられたアンカーである。
【0007】
【発明が解決しようとする課題】
ところで、上記接合構造を有するセグメント1を製造する場合、接合金具3を型枠に保持させる必要があるが、従来、この接合金具3を精度良くかつ容易に支持させることができなかった。また、型枠内にコンクリートを打設した際に、接合金具3の係合空間8内へコンクリートが入り込んでしまい、連結金具4の係合部7による係合に不具合が生じてしまうという問題もあった。
【0008】
この発明は、上記事情に鑑みてなされたもので、セグメントの接合端面に設けられる接合金具を、接合端面を形成する型枠の端板に容易に取り付けて連結金具による接合を良好に行うことを可能とする接合金具の型枠への取り付け構造を提供することを目的としている。
【0009】
【課題を解決するための手段】
上記目的を達成するために、請求項1記載の接合金具の型枠への取り付け構造は、セグメントの接合端面に設けられた接合金具を、セグメントを成形する型枠の前記接合端面を形成する端板に取り付ける取り付け構造であって、前記接合金具は、端部が屈曲した係止片部を対向位置に有する断面視C型に形成され、セグメントの接合端面同士を突き合わせた状態にて、前記接合金具同士の間に、両側部に前記接合金具の前記係止片部間の係合空間に挿入されて係合する係合部が形成された連結金具を挿入することにより、該連結金具によって互いに接合されてなり、前記接合金具には、前記係合空間を形成する底部に取り付け用ネジ孔が形成されていると共に前記係合空間内に挿通孔を有する発泡材が入れられており、前記取り付け用ネジ孔には、前記端板に形成された孔部から挿入され、前記係止片部同士の間と前記発泡材の挿通孔を通された取り付け用ネジが螺合され、該取り付け用ネジによって前記接合金具が前記端板に取り付けられることを特徴としている。
つまり、端板の定位置に接合金具を配置した状態にて端板の孔部から取り付け用ネジを挿通して係止片部同士の間と発泡材の挿通孔を通し、接合金具の係合空間を形成する底部に形成された取り付け用ネジ孔へ螺合させることにより、その締結力によって接合金具が端板の定位置に取り付けられる。また、型枠のコンクリート打設空間内へ打設したコンクリートの硬化後においては、取り付け用ネジをゆるめて取り外すことにより、セグメントの脱型が可能となる。
しかも、接合金具の係合空間内に挿通孔を有する発泡材が入れられているので、型枠内へコンクリートを打設した際に、このコンクリートが、接合金具の係合空間内へ入り込むことがなく、これにより、係合空間が確実に形成され、セグメント同士の接合時において、連結金具の係合部が接合金具の係合空間内へ確実に挿入され、接合金具同士の接合が確実に行われる。
【0011】
請求項2記載の接合金具の型枠への取り付け構造は、請求項1記載の接合金具の型枠への取り付け構造において、前記接合金具に、前記係合空間を形成する底部に形成された取り付け用ネジ孔が間隔をあけて複数形成され、これら取り付け用ネジ孔に、それぞれ前記取り付け用ネジが螺合されることを特徴としている。
このように、接合金具に形成された複数の取り付け用ネジ孔へそれぞれ取り付け用ネジが螺合されて接合金具が端板に取り付けられるので、接合金具の取り付け時に端板へ取り付けられた接合金具が回転するような不都合なく、接合金具が端板の定位置へ取り付けられる。
【0012】
【発明の実施の形態】
以下、本発明の実施の形態の接合金具の型枠への取り付け構造を図によって説明する。なお、従来技術と同一構造部分には、同一符号を付して説明を省略する。
図1及び図2において、符号21は、セグメント1を成形する型枠を構成する端板である。この端板21には、孔部22が形成されており、これら孔部22から取り付け用ネジ23が挿通されている。また、接合金具3には、係合空間8を形成する底部8aの係止片部5同士の隙間を臨む位置に、間隔をあけて複数の取り付け用ネジ孔24が形成されており、これら取り付け用ネジ孔24へ、端板21の孔部22から挿通させ、係止片部5同士の間を通した取り付け用ネジ23を螺合させることにより、接合金具3が端板21に固定されるようになっている。また、接合金具3に形成された係合空間8には、発泡スチロール等の発泡材25が隙間なく入れられている。なお、この発泡材25には、取り付け用ネジ23が挿通される挿通孔25aが形成されている。
【0013】
また、端板21には、図3にも示すように、位置決め突起部21aが形成されており、この位置決め突起部21aが、接合金具3の係止片部5同士の隙間に嵌合するように、接合金具3を端板21へ配置させることにより、接合金具3が位置決め突起部21aによって端板21の所定の位置に位置決めされるようになっている。
なお、この位置決め突起部21aは、セグメント1の脱型時に、接合金具3から容易に抜け出すように、先端へ向かって先細りのテーパ形状にされている。
また、この位置決め突起部21aをスライド可能とし、セグメント1の脱型時に引き込ませるようにしても良い。
【0014】
次に、接合金具3が接合端面1aに設けられたセグメント1を成形する場合について説明する。
まず、接合金具3の係合空間8内に発泡材25を入れる。そして、この接合金具3を、端板21の取り付け位置へ配置させる。
この状態において、端板21の裏面側から、孔部22へ取り付け用ネジ23を挿入し、この取り付け用ネジ23を、接合金具3の係止片部5同士の間へ通すとともに、発泡材25の挿通孔25aへ挿入し、係合空間8を形成する底部8aに形成された取り付け用ネジ孔24へねじ込む。
このようにすると、接合金具3が取り付け用ネジ23の締結力によって端板21に取り付けられる。
【0015】
そして、型枠の内部のコンクリート打設空間内にコンクリートを打設する。
なお、接合端面1aに、溝部2を形成するために、端板21には、中子26を取り付けておくか、端板21に、溝部2を形成するための凸部(図示略)を形成しておく。
【0016】
コンクリートが硬化したら、それぞれの取り付け用ネジ23をゆるめて取り外す。
この状態にて、端板21及び側板をコンクリートから成形されたセグメントから引き離し、セグメントを上方へ吊り上げて、型枠から脱型する。
その後、接合金具3の係合空間8内に入れておいた発泡材25を取り外す。
上記作業を行うことにより、各接合端面1aに、接合金具3が定位置に配置されたセグメント1が成形される。
【0017】
以上、説明したように、上記接合金具の型枠への取り付け構造によれば、端板21の定位置に接合金具3を配置した状態にて端板21の孔部22から取り付け用ネジ23を挿通して係止片部5同士の間を通し、接合金具3の係合空間8を形成する底部8aに形成された取り付け用ネジ孔24へ螺合させることにより、その締結力によって極めて容易に、接合金具3を端板21の定位置に取り付けることができる。
また、型枠のコンクリート打設空間内へ打設したコンクリートの硬化後においては、取り付け用ネジ23をゆるめて取り外すことにより、セグメント1の脱型を容易に行うことができる。
【0018】
また、接合金具3の係合空間8を形成する底部8aに形成された複数の取り付け用ネジ孔24に、端板21の孔部22に挿入されたそれぞれの取り付け用ネジ23を螺合させて、接合金具3を複数箇所にて端板21へ取り付けているので、接合金具3の取り付け時に接合金具3が回転するような不都合をなくすことができる。
しかも、接合金具3の係合空間8内に、発泡材25が入れられているので、接合金具3の係合空間8内へコンクリートが入り込むことがなく、係合空間8を確実に確保することができ、セグメント1同士の接合時において、連結金具4の係合部7を接合金具3の係合空間8内へ確実に挿入させることができ、接合金具3同士の接合を確実に行うことができる。
【0019】
【発明の効果】
以上、説明したように、本発明の接合金具の型枠への取り付け構造によれば、下記の効果を得ることができる。請求項1記載の接合金具の型枠への取り付け構造によれば、端板の定位置に接合金具を配置した状態にて端板の孔部から取り付け用ネジを挿通して接合金具の係止片部同士の間を通し、接合金具の係合空間を形成する底部に形成された取り付け用ネジ孔へ螺合させることにより、その締結力によって極めて容易に、接合金具を端板の定位置に取り付けることができる。
また、型枠のコンクリート打設空間内へ打設したコンクリートの硬化後においては、取り付け用ネジをゆるめて取り外すことにより、セグメントの脱型を容易に行うことができる。
しかも、接合金具の係合空間内に発泡材が入れられているので、型枠内へコンクリートを打設した際に、このコンクリートが、接合金具の係合空間内へ入り込むことがなく、これにより、係合空間を確実に形成することができ、セグメント同士の接合時において、連結金具の係合部を接合金具の係合空間内へ確実に挿入させることができ、接合金具同士の接合を確実に行うことができる
【0020】
請求項2記載の接合金具の型枠への取り付け構造によれば、接合金具に形成された複数の取り付け用ネジ孔へそれぞれ取り付け用ネジが螺合されて接合金具が端板に取り付けられるので、接合金具の取り付け時に端板へ取り付けられた接合金具が回転するような不都合なく、接合金具を確実に端板の定位置へ取り付けることができる。
【図面の簡単な説明】
【図1】 本発明の実施の形態の接合金具の型枠への取り付け構造を説明する型枠の端板に取り付けられた接合金具の断面図である。
【図2】 本発明の実施の形態の接合金具の型枠への取り付け構造を説明する型枠の端板に取り付けられた接合金具の横断面図である。
【図3】 本発明の実施の形態の接合金具の型枠への取り付け構造を説明する型枠の端板に取り付けられた接合金具の断面図である。
【図4】 接合金具を有するセグメント及び接合金具に係合される連結金具の斜視図である。
【図5】 接合金具を有するセグメント及び接合金具に係合される連結金具の断面図である。
【符号の説明】
1 セグメント
1a 接合端面
3 接合金具
4 連結金具
5 係止片部
7 係合部
8 係合空間
8a 底部
22 孔部
23 取り付け用ネジ孔
24 取り付け用ネジ
25 発泡材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for attaching a joint fitting provided on a joint end face of a segment that constructs a tunnel wall body in a drilling hole to each other by joining to each other.
[0002]
[Prior art]
As a method for constructing a tunnel, a so-called shield method is generally used in which a tubular wall body is constructed by assembling segments (mainly made of concrete or steel) on the inner surface side of an excavation hole.
As a segment used for this shield method, a rectangular shape in a plan view and an arc plate shape are mainly used, and these segments are joined together by bolts.
As a structure for joining the segments with this bolt, when the joining surfaces of the segments are brought into contact with each other, a joint plate having holes communicating with each other is embedded, and the bolt is inserted into the holes of these joint plates. A structure in which a nut is fastened and joined to the bolt is common. There is also a structure in which insert fittings which are nut members are embedded in the mutual segments, and bolts penetrating through the adjacent segments are fastened and joined together.
[0003]
However, in the above structure, the bolt is inserted into the hole formed in the joint surface of the joint at the construction site, and the nut is fastened to the bolt or the bolt is fastened to the insert fitting embedded in the mutual segment. Since complicated work is required, there is a limit to shortening the assembly time, and adaptation to automatic assembly by a robot has been difficult.
Furthermore, even when the secondary lining is omitted, the bolt box formed in the segment must be closed in order to install the bolts and nuts, and a new joint is aimed at speeding up construction and labor saving. The current situation is that there is an urgent need to develop the structure.
[0004]
Here, the present inventors have developed a segment that can be joined very easily and has a smooth inner surface.
As shown in FIGS. 4 and 5, the segment 1 is formed with a joining groove 2 on the joining end face 1 a, and the joining groove 2 is provided with a plurality of C-shaped joining fittings 3 in cross-sectional view. These joining fittings 3 are connected to each other by an I-type connecting fitting 4.
The joining metal fitting 3 is provided with a hook-like engaging portion 6 having an engaging piece portion 5 at an opposing position, and a space formed by the engaging piece portions 5 is formed by the engaging portion 7 of the connecting fitting 4. The engagement space 8 is engaged.
[0005]
The locking surface 9 formed by the inner surface of the locking piece 5 is a tapered surface that narrows in the insertion direction of the connecting fitting 4. In other words, in a state where the joining end surfaces 1 a of the segments 1 are abutted with each other, the locking surfaces 9 of the joining fittings 3 facing each other are tapered surfaces that gradually approach toward the rear in the insertion direction of the connecting fitting 4.
[0006]
And when joining the said segments 1, first, the joining end surfaces 1a of these segments 1 are contact | abutted mutually, and the connection metal fitting 4 is inserted in the insertion hole which consists of joining grooves 2. FIG.
By doing so, the engagement surface 10 made of the taper surface of the engagement portion 7 of the connecting metal fitting 4 abuts against the engagement surface 9 made of the taper surface of the engagement piece portion 5 of the joint metal fitting 3 and slides. The respective joining fittings 3 are attracted to each other, thereby joining the segments 1 to each other.
In addition, the connection metal fitting 4 which joins the joining metal fittings 3 of the back side is formed so that the engaging part 7 may pass through the inside of the engagement space 8 of the joining metal fitting 3 on the near side.
Moreover, the code | symbol 11 in the figure is an anchor provided in order to aim at integration with the concrete which forms the segment 1. FIG.
[0007]
[Problems to be solved by the invention]
By the way, when manufacturing the segment 1 which has the said joining structure, although it is necessary to hold the joining metal fitting 3 in a formwork, conventionally, this joining metal fitting 3 was not able to be supported accurately and easily. In addition, when concrete is placed in the mold, the concrete enters the engagement space 8 of the joint fitting 3, which causes a problem in the engagement by the engagement portion 7 of the connection fitting 4. there were.
[0008]
The present invention has been made in view of the above circumstances, and it is preferable to easily attach the joint fitting provided on the joining end face of the segment to the end plate of the mold forming the joining end face and to perform the joining with the connecting fitting satisfactorily. An object of the present invention is to provide a structure for attaching a joining metal fitting to a mold frame.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the structure for attaching the joint fitting to the mold according to claim 1 is characterized in that the joint fitting provided on the joint end face of the segment is an end that forms the joint end face of the mold forming the segment. An attachment structure for attaching to a plate, wherein the joining metal fitting is formed in a C-shaped cross-sectional view having a locking piece portion bent at an end portion at an opposing position, and the joining end surfaces of the segments are brought into contact with each other. Between the metal fittings, by inserting a connection metal fitting in which engagement portions are formed to be engaged with each other by being inserted into engagement spaces between the locking piece portions of the joint metal fitting on both sides, it is joined to the said joining fitting, and foam is placed having an insertion hole into the engaging space with mounting screw hole is formed in a bottom portion forming the engaging space, said mounting Screw hole Is inserted from the hole formed in the end plate, the locking piece mounting screw passed through the insertion hole of the foam and between each other is screwed, said joint device by the mounting screws Is attached to the end plate.
In other words, in the state where the joint metal fitting is arranged at a fixed position of the end plate, the mounting screws are inserted through the hole portions of the end plate, and between the locking pieces and through the foaming material insertion hole , the joint metal fitting is engaged. By screwing it into a mounting screw hole formed in the bottom forming the space, the joint fitting is attached to a fixed position of the end plate by the fastening force. Further, after the concrete placed in the concrete placement space of the mold is cured, the segment can be removed by loosening and removing the mounting screws.
Moreover, since a foam material having an insertion hole is placed in the engagement space of the joint fitting, the concrete may enter the engagement space of the joint fitting when the concrete is placed in the mold. As a result, the engagement space is reliably formed, and when the segments are joined together, the engaging portion of the connecting bracket is reliably inserted into the engagement space of the joining bracket, so that the joining brackets are reliably joined. Is called.
[0011]
The attachment structure of the joint fitting to the mold according to claim 2 is the attachment structure of the joint fitting to the mold according to claim 1 , wherein the attachment is formed on the bottom of the joint fitting to form the engagement space. A plurality of screw holes are formed at intervals, and the mounting screws are screwed into the mounting screw holes, respectively.
In this way, since the mounting screws are respectively screwed into the plurality of mounting screw holes formed in the joint metal fitting and the joint metal fitting is attached to the end plate, the joint metal fitting attached to the end plate is not attached when the joint metal fitting is attached. The joint fitting is attached to a fixed position of the end plate without inconvenience of rotating.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the attachment structure to the formwork of the joining metal fitting according to the embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same structure part as a prior art, and description is abbreviate | omitted.
In FIG. 1 and FIG. 2, reference numeral 21 denotes an end plate constituting a mold for forming the segment 1. Holes 22 are formed in the end plate 21, and mounting screws 23 are inserted through the holes 22. In addition, a plurality of mounting screw holes 24 are formed at intervals in the joint fitting 3 at positions facing the gaps between the locking piece portions 5 of the bottom portion 8a forming the engagement space 8. The fitting 3 is fixed to the end plate 21 by being inserted into the screw hole 24 from the hole portion 22 of the end plate 21 and screwing the mounting screw 23 passed between the locking pieces 5. It is like that. Further, in the engagement space 8 formed in the joint fitting 3, a foam material 25 such as a polystyrene foam is inserted without a gap. The foam material 25 has an insertion hole 25a through which the mounting screw 23 is inserted.
[0013]
Further, as shown in FIG. 3, positioning projections 21 a are formed on the end plate 21, and the positioning projections 21 a are fitted in the gaps between the locking pieces 5 of the joint fitting 3. Further, by arranging the joining metal fitting 3 on the end plate 21, the joining metal fitting 3 is positioned at a predetermined position of the end plate 21 by the positioning projection 21a.
The positioning projection 21a has a tapered shape that tapers toward the tip so that the segment 1 can be easily removed from the joint fitting 3 when the segment 1 is removed.
Further, the positioning projection 21a may be slidable and retracted when the segment 1 is removed.
[0014]
Next, the case where the joining metal fitting 3 shape | molds the segment 1 provided in the joining end surface 1a is demonstrated.
First, the foam material 25 is put into the engagement space 8 of the joint fitting 3. And this joining metal fitting 3 is arrange | positioned to the attachment position of the end plate 21. FIG.
In this state, the mounting screw 23 is inserted into the hole portion 22 from the back side of the end plate 21, and the mounting screw 23 is passed between the locking pieces 5 of the joint fitting 3 and the foam material 25. Are inserted into the insertion holes 25a and screwed into the mounting screw holes 24 formed in the bottom 8a forming the engagement space 8.
If it does in this way, the joining metal fitting 3 will be attached to the end plate 21 by the fastening force of the screw 23 for attachment.
[0015]
Then, concrete is placed in the concrete placement space inside the formwork.
In addition, in order to form the groove part 2 in the joining end surface 1a, the core 26 is attached to the end plate 21, or the convex part (not shown) for forming the groove part 2 is formed in the end plate 21. Keep it.
[0016]
When the concrete has hardened, loosen each mounting screw 23 and remove it.
In this state, the end plate 21 and the side plate are pulled away from the segment formed from concrete, the segment is lifted upward, and the mold is removed from the mold.
Then, the foam material 25 put in the engagement space 8 of the joining metal fitting 3 is removed.
By performing the above operation, the segment 1 in which the joint fitting 3 is arranged at a fixed position is formed on each joint end face 1a.
[0017]
As described above, according to the structure for attaching the joining bracket to the formwork, the mounting screw 23 is inserted from the hole 22 of the end plate 21 in a state where the joining bracket 3 is disposed at a fixed position of the end plate 21. By inserting and passing between the locking piece portions 5 and screwing into the mounting screw holes 24 formed in the bottom portion 8a forming the engagement space 8 of the joint fitting 3, it is very easy to use the fastening force. The joining bracket 3 can be attached to a fixed position of the end plate 21.
In addition, after the concrete placed in the concrete placement space of the mold is cured, the segment 1 can be easily removed by loosening and removing the mounting screw 23.
[0018]
Further, the respective mounting screws 23 inserted into the hole portions 22 of the end plate 21 are screwed into the plurality of mounting screw holes 24 formed in the bottom portion 8a forming the engagement space 8 of the joint fitting 3. Since the joining fitting 3 is attached to the end plate 21 at a plurality of locations, it is possible to eliminate the inconvenience that the joining fitting 3 rotates when the joining fitting 3 is attached.
And since the foam material 25 is put in the engagement space 8 of the joining metal fitting 3, concrete does not enter into the engagement space 8 of the joining metal fitting 3, and the engagement space 8 is ensured reliably. When the segments 1 are joined to each other, the engaging portion 7 of the connection fitting 4 can be reliably inserted into the engagement space 8 of the joining fitting 3, and the joining fittings 3 can be reliably joined together. it can.
[0019]
【The invention's effect】
As described above, according to the structure for attaching the joining metal fitting to the mold of the present invention, the following effects can be obtained. According to the structure for attaching the joining bracket to the mold according to claim 1, the joining bracket is inserted through the hole of the end plate in a state where the joining bracket is arranged at a fixed position of the end plate. By passing between the pieces and screwing them into the mounting screw holes formed in the bottom part that forms the engagement space of the joining bracket, the joining bracket can be brought into a fixed position on the end plate very easily by the fastening force. Can be attached.
In addition, after the concrete placed in the concrete placement space of the mold is cured, the segments can be easily removed by loosening and removing the mounting screws.
In addition, since the foam material is put in the engagement space of the joint fitting, when the concrete is placed in the mold, the concrete does not enter the engagement space of the joint fitting. The engagement space can be reliably formed, and when the segments are joined together, the engaging portion of the connecting bracket can be surely inserted into the engagement space of the joining bracket, so that the joining brackets can be securely joined. Can be done .
[0020]
According to the structure for attaching the joint fitting to the mold according to claim 2, since the attachment screws are respectively screwed into the plurality of attachment screw holes formed in the joint fitting, and the joint fitting is attached to the end plate. The joining bracket can be securely attached to a fixed position of the end plate without inconvenience that the joining bracket attached to the end plate rotates when the joining bracket is attached.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a joint fitting attached to an end plate of a mold for explaining a structure for attaching the joint fitting to a mold according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the joint fitting attached to the end plate of the mold for explaining the structure for attaching the joint fitting to the mold according to the embodiment of the present invention.
FIG. 3 is a cross-sectional view of the joint fitting attached to the end plate of the mold for explaining the structure for attaching the joint fitting to the mold according to the embodiment of the present invention.
FIG. 4 is a perspective view of a segment having a joint fitting and a connection fitting engaged with the joint fitting.
FIG. 5 is a cross-sectional view of a segment having a joint fitting and a connection fitting engaged with the joint fitting.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Segment 1a Joint end surface 3 Joint metal fitting 4 Coupling metal fitting 5 Locking piece part 7 Engagement part 8 Engagement space 8a Bottom part 22 Hole part 23 Installation screw hole 24 Installation screw 25 Foaming material

Claims (2)

セグメントの接合端面に設けられた接合金具を、セグメントを成形する型枠の前記接合端面を形成する端板に取り付ける取り付け構造であって、
前記接合金具は、端部が屈曲した係止片部を対向位置に有する断面視C型に形成され、セグメントの接合端面同士を突き合わせた状態にて、前記接合金具同士の間に、両側部に前記接合金具の前記係止片部間の係合空間に挿入されて係合する係合部が形成された連結金具を挿入することにより、該連結金具によって互いに接合されてなり、
前記接合金具には、前記係合空間を形成する底部に取り付け用ネジ孔が形成されていると共に前記係合空間内に挿通孔を有する発泡材が入れられており、
前記取り付け用ネジ孔には、前記端板に形成された孔部から挿入され、前記係止片部同士の間と前記発泡材の挿通孔を通された取り付け用ネジが螺合され、該取り付け用ネジによって前記接合金具が前記端板に取り付けられることを特徴とする接合金具の型枠への取り付け構造。
An attachment structure for attaching a joining fitting provided on a joining end face of a segment to an end plate forming the joining end face of a mold for forming the segment,
The joint fitting is formed in a C-shaped cross-sectional view having a locking piece portion whose end is bent at an opposing position, and is formed on both sides between the joint fittings in a state where the joint end faces of the segments are abutted with each other. By inserting the connecting bracket formed with the engaging portion to be inserted and engaged in the engagement space between the locking piece portions of the connecting bracket, the connecting bracket is joined to each other,
The joint fitting is provided with a foam material having an insertion hole in the engagement space, and a screw hole for attachment is formed in a bottom portion forming the engagement space.
The mounting screw hole is inserted through a hole formed in the end plate, and a mounting screw that is inserted between the locking pieces and through the insertion hole of the foam material is screwed. A structure for attaching a joining bracket to a formwork, wherein the joining bracket is attached to the end plate by a screw.
前記接合金具には、前記係合空間を形成する底部に形成された取り付け用ネジ孔が間隔をあけて複数形成され、これら取り付け用ネジ孔に、それぞれ前記取り付け用ネジが螺合されることを特徴とする請求項1記載の接合金具の型枠への取り付け構造。 A plurality of mounting screw holes formed in the bottom portion forming the engagement space are formed at intervals in the joint metal fitting, and the mounting screws are screwed into the mounting screw holes, respectively. The attachment structure to the formwork of the joining metal fitting of Claim 1 characterized by the above-mentioned.
JP29448698A 1998-09-30 1998-09-30 Mounting structure for joining metal fittings Expired - Fee Related JP4040190B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29448698A JP4040190B2 (en) 1998-09-30 1998-09-30 Mounting structure for joining metal fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29448698A JP4040190B2 (en) 1998-09-30 1998-09-30 Mounting structure for joining metal fittings

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JP2000104496A JP2000104496A (en) 2000-04-11
JP4040190B2 true JP4040190B2 (en) 2008-01-30

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