JP3024933U - Segment joint structure - Google Patents
Segment joint structureInfo
- Publication number
- JP3024933U JP3024933U JP1995008946U JP894695U JP3024933U JP 3024933 U JP3024933 U JP 3024933U JP 1995008946 U JP1995008946 U JP 1995008946U JP 894695 U JP894695 U JP 894695U JP 3024933 U JP3024933 U JP 3024933U
- Authority
- JP
- Japan
- Prior art keywords
- joint
- segment
- reinforcing bar
- threaded
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
(57)【要約】
【目的】 急カーブのトンネル部分のセグメント間の継
手としてその曲がりに追従することができ、かつ簡単な
構造で安価な継手を提供する。
【構成】 互いに接合する一方のセグメント１の接合面
に突設したネジ節鉄筋２を、他方のセグメント１の接合
面に埋設固定した継手板３に設けたネジ節鉄筋２の外径
よりも大きい内径に形成した挿入孔４に挿通して、その
先端を継手板３の後方に設けた箱抜き部７に突設し、こ
の突設したネジ節鉄筋２の先端にナット９をねじ込んで
締結してなることを特徴としている。
(57) [Abstract] [Purpose] To provide an inexpensive joint with a simple structure that can follow the bend as a joint between segments of a sharply curved tunnel portion. [Structure] A threaded joint reinforcing bar 2 projecting from the joining surface of one segment 1 to be joined to each other is larger than an outer diameter of a threaded joint reinforcing bar 2 provided on a joint plate 3 embedded and fixed in the joining surface of the other segment 1. The nut 9 is inserted into the insertion hole 4 formed in the inner diameter, and the tip thereof is projectingly provided on the box removing portion 7 provided at the rear of the joint plate 3, and the nut 9 is screwed into the tip of the projecting threaded joint reinforcing bar 2 for fastening. It is characterized by
Description
【０００１】[0001]
この考案は、セグメントの継手構造に関するものである。 The present invention relates to a joint structure for segments.
【０００２】[0002]
従来セグメントの継手構造として、接合すべきセグメント相互の接合面に相対 して箱抜きの継手ボックスを設け、相互の継手ボックスの接合板に設けたボルト 孔にボルトを通してナットで締結する構造のものが一般的に実施されている。 As a conventional joint structure for segments, a box-less joint box is provided facing the joint surfaces of the segments to be joined, and bolts are inserted through the bolt holes provided in the joint plates of the joint boxes to fasten them with nuts. It is commonly practiced.
【０００３】[0003]
上記従来の継手ボックスでは、接合すべきセグメントの双方の接合面に断面欠 損となる箱抜きが存在するため、セグメントの強度上の弱点ができると共に、組 立後に防錆の必要上継手ボックスの箱抜き部にモルタルを充填して穴詰め処理す る必要があり、その作業に手間と労力を要するなどの問題があった。 In the above-mentioned conventional joint box, since there is a box cutout that causes a cross-sectional loss on both joint surfaces of the segments to be joined, there are weak points in the strength of the segment, and rust prevention is required after assembly There was a problem that it was necessary to fill the mortar in the box removal part and fill the holes, which required labor and labor.
【０００４】 また、セグメントの組立時に継手ボックスのボルトの締結作業が必要であるこ とから、それだけシールドの掘進が遅れるという問題があった。Further, since it is necessary to fasten the bolts of the joint box when assembling the segments, there is a problem that the excavation of the shield is delayed by that much.
【０００５】[0005]
この考案は前記従来の課題を解決するために、互いに接合する一方のセグメン ト１の接合面に突設したネジ節鉄筋２を、他方のセグメント１の接合面に埋設固 定した継手板３に設けたネジ節鉄筋２の外径よりも大きい内径に形成した挿入孔 ４に挿通して、その先端を継手板３の後方に設けた箱抜き部７に突設し、この突 設したネジ節鉄筋２の先端にナット９をねじ込んで締結してなるセグメントの継 手構造を提案するものである。 In order to solve the above-mentioned conventional problems, this invention uses a joint plate 3 in which a threaded joint bar 2 projecting from the joint surface of one segment 1 to be joined to each other is fixed and embedded in the joint surface of the other segment 1. The provided threaded joint is inserted into an insertion hole 4 formed in an inner diameter larger than the outer diameter of the reinforcing bar 2, and its tip is projected to a box removing portion 7 provided at the rear of the joint plate 3, and the projected threaded joint is formed. A joint structure of a segment is proposed, in which a nut 9 is screwed and fastened to the tip of the reinforcing bar 2.
【０００６】[0006]
箱抜き部７がセグメント１の片側の接合面にだけ設けられているため、断面欠 損が少なく、組立後の穴詰処理も少なくて済む。 Since the box removing portion 7 is provided only on one side of the joint surface of the segment 1, the cross-section loss is small and the hole filling process after assembly is also small.
【０００７】 セグメント１の片側接合面に突設したネジ節鉄筋２は、既製品として手軽に、 しかも安価に入手できて、セグメント１に対しても極めて簡単に設置することが でき、また既製のネジ節２’が形成されているため、ネジ加工も不要で、そのネ ジ節２’が埋設部分のコンクリートの付着力を増すので、アンカー筋の取付けが 不要となる。The threaded joint reinforcing bar 2 projecting from the joint surface on one side of the segment 1 can be easily and inexpensively obtained as an off-the-shelf product, and can be installed very easily on the segment 1 as well. Since the threaded joint 2'is formed, no screwing is required, and since the adhesive joint 2'increases the adhesive force of the concrete in the buried portion, the attachment of the anchor bar becomes unnecessary.
【０００８】 セグメント１の組立時に、一方のセグメント１の接合面に突設したネジ節鉄筋 ２を他方のセグメントの接合面の継手板３の挿入孔４に挿通して、その先端を箱 抜き部７内に突設することにより、ボルトの締結を行わない状態で新たに組立て たセグメントリングを先行して組立てたセグメントリングに仮支持することがで きるため、この仮組立後においてシールドマシンを推進して掘進施工を行うこと ができ、その後にネジ節鉄筋２の先端にナット９をねじ込んで締結することがで きる。At the time of assembling the segment 1, the threaded bar reinforcement 2 projecting from the joint surface of one segment 1 is inserted into the insertion hole 4 of the joint plate 3 of the joint surface of the other segment, and the tip thereof is removed from the box removing part. By projecting it inside 7, the newly assembled segment ring can be temporarily supported by the previously assembled segment ring without bolt tightening, so the shield machine can be promoted after this temporary assembly. Then, the excavation work can be performed, and then the nut 9 can be screwed and fastened to the tip of the threaded bar 2.
【０００９】[0009]
セグメント１の前後の接合面の一方には後部をセグメント１中に埋設したネジ 節鉄筋２の先端部が突設され、接合面の他方にはネジ節鉄筋２に対応する位置に 鋼製の継手板３がその表面を表出して埋設固定されている。 A front end of a threaded bar reinforcing bar 2 having a rear part embedded in the segment 1 is projected on one of the front and rear joining surfaces of the segment 1, and a steel joint is provided on the other side of the joining surface at a position corresponding to the threaded bar reinforcing bar 2. The plate 3 has its surface exposed and is fixed by embedding.
【００１０】 継手板３には、ネジ節鉄筋２の軸心位置に対応する位置にネジ節鉄筋２の外径 よりも大きい内径に形成した挿入孔４が明けられている。The joint plate 3 has an insertion hole 4 formed therein at a position corresponding to the axial center position of the threaded joint reinforcing bar 2 and having an inner diameter larger than the outer diameter of the threaded joint reinforcing bar 2.
【００１１】 また継手板３にはその背面に左右に鋼製の側板５が直角に取付けられ、その側 板５の外面に後方に突出するアンカー筋６が固定され、継手板の後方には箱抜き 部７が設けられている。Further, side plates 5 made of steel are attached to the rear surface of the joint plate 3 at right angles, right and left anchor ribs 6 projecting backward are fixed to the outer surface of the side plate 5, and a box is provided behind the joint plate. A removal portion 7 is provided.
【００１２】 前後のセグメント１，１の組立に際しては、一方のセグメント１の接合面に突 設したネジ節鉄筋２を他方のセグメントの接合面の継手板３の挿入孔４に挿通し て、その先端を箱抜き部７内に突設し、ボルトの締結を行わない状態で新たに組 立てたセグメントリングを先行して組立てたセグメントリングに仮支持し、この 仮組立後においてシールドマシンを推進して掘進施工を行う。When assembling the front and rear segments 1 and 1, the threaded bar reinforcement 2 protruding from the joint surface of one segment 1 is inserted into the insertion hole 4 of the joint plate 3 of the joint surface of the other segment, and With the tip protruding in the box extraction part 7, the newly assembled segment ring is temporarily supported by the previously assembled segment ring without bolts tightened, and the shield machine is promoted after this temporary assembly. Digging construction.
【００１３】 その後、この突設したネジ節鉄筋２の先端にワッシャー８を介してナット９を ねじ込んで締結する。After that, a nut 9 is screwed in and fastened to the tip of the projecting threaded joint bar 2 through a washer 8.
【００１４】 なお、リング方向に隣接するセグメント１，１は、コッター式継手金具で締結 する。The segments 1 and 1 adjacent to each other in the ring direction are fastened with a cotter type fitting.
【００１５】[0015]
以上の通りこの考案によれば、継手板の挿入孔はネジ節鉄筋の外径よりも大き い内径に形成されているので、ネジ節鉄筋を挿入孔の軸心に傾いた状態で挿入す ることができ、その結果急カーブのトンネル部分のセグメント間の継手としてそ の曲がりに追従することができる。 As described above, according to this invention, since the insertion hole of the joint plate is formed to have an inner diameter larger than the outer diameter of the threaded joint reinforcing bar, the threaded joint reinforcing bar is inserted in a state of being inclined with respect to the axis of the insertion hole. As a result, the bend can be followed as a joint between segments of a sharply curved tunnel portion.
【００１６】 一方のセグメントの接合面に突設したネジ節鉄筋は、既製品として手軽に、し かも安価に入手できて、セグメントに対しても極めて簡単に設置することができ 、既製のネジ節が形成されているのでめ、ネジ加工も不要で、そのネジ節が埋設 部分のコンクリートの付着力を増すので、アンカー筋の取付けが不要となる。The threaded joint reinforcing bar projecting from the joining surface of one of the segments can be easily obtained as an off-the-shelf product or at low cost, and can be installed very easily on the segment. Since it is formed, screw processing is not necessary, and since the screw joint increases the adhesive force of concrete in the embedded portion, it is not necessary to attach anchor bars.
【００１７】 また、一方のセグメントの接合面に突設したネジ節鉄筋を他方のセグメントの 接合面の継手板の挿入孔に挿通して、その先端を箱抜き部内に突設することによ り、ボルトの締結を行わない状態で新たに組立てたセグメントリングを先行して 組立てたセグメントリングに仮支持することができるため、この仮組立後におい てシールドマシンを推進して掘進施工を行い、後施工でボルト締結作業行うこと により、掘進サイクルを短縮することができる。In addition, by inserting the threaded bar reinforcement projecting from the joint surface of one segment into the insertion hole of the joint plate of the joint surface of the other segment, and projecting the tip thereof into the box removing part. Since the newly assembled segment ring can be temporarily supported by the previously assembled segment ring without tightening the bolts, the shield machine is promoted after this temporary assembly to perform the excavation work. By performing bolt fastening work during construction, the excavation cycle can be shortened.
【図１】この考案の継手構造の縦断側面図。FIG. 1 is a vertical sectional side view of a joint structure of the present invention.
【図２】この考案の継手構造の横断平面図。FIG. 2 is a cross-sectional plan view of the joint structure of the present invention.
【図３】この考案の継手により組立施工を行う状態を示
す斜視図。FIG. 3 is a perspective view showing a state where assembly work is carried out by the joint of the present invention.
１ セグメント ２ ネジ節鉄筋 ２’ ネジ節 ３ 継手板 ４ 挿入孔 ５ 側板 ６ アンカー筋 ７ 箱抜き部 ８ ワッシャー ９ ナット 1 segment 2 screw joint rebar 2'screw joint 3 joint plate 4 insertion hole 5 side plate 6 anchor bar 7 box removal part 8 washer 9 nut
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年１２月７日[Submission date] December 7, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】追加[Correction method] Added
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】この考案の継手構造の縦断面図。FIG. 1 is a vertical sectional view of a joint structure of the present invention.
【図２】この考案の継手構造の横断面図。FIG. 2 is a cross-sectional view of the joint structure of the present invention.
【図３】この考案の継手により組立施工を行う状態を示
す斜視図。FIG. 3 is a perspective view showing a state where assembly work is carried out by the joint of the present invention.
【図４】この考案に係るセグメントの横断平面図。FIG. 4 is a cross-sectional plan view of a segment according to the present invention.
【符号の説明】 １ セグメント ２ ネジ節鉄筋 ２’ネジ節 ３ 継手板 ４ 挿入孔 ５ 側板 ６ アンカー筋 ７ 箱抜き部 ８ ワッシャー ９ ナット[Explanation of reference symbols] 1 segment 2 screw joint rebar 2'screw joint 3 joint plate 4 insertion hole 5 side plate 6 anchor bar 7 box removal section 8 washer 9 nut
Claims (1)
面に突設したネジ節鉄筋を、他方のセグメントの接合面
に埋設固定した継手板に設けた前記ネジ節鉄筋の外径よ
りも大きい内径に形成した挿入孔に挿通して、その先端
を前記継手板の後方に設けた箱抜き部に突設し、この突
設したネジ節鉄筋先端にナットをねじ込んで締結してな
ることを特徴とするセグメントの継手構造。1. An inner diameter larger than the outer diameter of the threaded joint reinforcing bar provided on a joint plate embedded in and fixed to the jointing surface of the other segment. It is characterized in that it is inserted into the formed insertion hole, its tip is projected to a box removing portion provided at the rear of the joint plate, and a nut is screwed into and fastened to the projected threaded joint rebar tip. Segment joint structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1995008946U JP3024933U (en) | 1995-08-02 | 1995-08-02 | Segment joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1995008946U JP3024933U (en) | 1995-08-02 | 1995-08-02 | Segment joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3024933U true JP3024933U (en) | 1996-06-07 |
Family
ID=43160148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1995008946U Expired - Lifetime JP3024933U (en) | 1995-08-02 | 1995-08-02 | Segment joint structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3024933U (en) |
-
1995
- 1995-08-02 JP JP1995008946U patent/JP3024933U/en not_active Expired - Lifetime
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