JP3345168B2 - Closed structure of joint recess in concrete segment - Google Patents
Closed structure of joint recess in concrete segmentInfo
- Publication number
- JP3345168B2 JP3345168B2 JP09896494A JP9896494A JP3345168B2 JP 3345168 B2 JP3345168 B2 JP 3345168B2 JP 09896494 A JP09896494 A JP 09896494A JP 9896494 A JP9896494 A JP 9896494A JP 3345168 B2 JP3345168 B2 JP 3345168B2
- Authority
- JP
- Japan
- Prior art keywords
- joint
- segment
- joint recess
- recess
- closing lid
- 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 - Fee Related
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、多数連結されてトンネ
ル壁体を構成するコンクリートセグメントにおいて、継
手部内面に形成されるボルト連結用の継手凹所を閉塞し
てトンネル内面を平滑に仕上げる構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which a plurality of joints are connected to form a tunnel wall, and a joint recess for bolt connection formed on the inner surface of the joint is closed to finish the inner surface of the tunnel smoothly. About.
【0002】[0002]
【従来の技術】トンネルを構築するためのいわゆるシー
ルド工法は、一般に、シールド機によって地山を掘削し
た断面略円形の周壁に、多数の円弧版であるセグメント
を据え付けて筒状壁体を組み立ててこれを一次覆工と
し、さらにその内面にコンクリートによる二次巻き等を
行って二次覆工を施すといった工法である。2. Description of the Related Art In general, a so-called shield construction method for constructing a tunnel is generally performed by assembling a cylindrical wall body by mounting a number of arc-shaped segments on a peripheral wall having a substantially circular cross section obtained by excavating the ground by a shield machine. This is a method in which this is used as a primary lining, and a secondary lining or the like is performed on the inner surface of the primary lining to perform secondary lining.
【0003】図9は従来よりあるRC(鉄筋コンクリー
ト)製のセグメント1の一例を示しており、このセグメ
ント1は、鉄筋コンクリートにより円弧板状に成形され
て湾曲する外面2、内面3、幅方向(軸方向)および長
さ方向(周方向)に沿った各接合端面5を有し、内面3
側の接合端面5に近い部分に複数の継手凹所8が形成さ
れ、この継手凹所8から接合端面5にわたる部分のフラ
ンジ部(継手部材)7にボルト挿通孔6が貫通形成され
ている。そして、図10に示すように、接合端面5どう
しを合わせると同時に一致させたボルト挿通孔6に、一
方のセグメント1の継手凹所8からボルト9を通し、双
方の継手凹所8からナット10をボルト9にねじ合わ
せ、フランジ部7どうしを締結してセグメント1どうし
の連結を行うようになっている。FIG. 9 shows an example of a conventional RC (reinforced concrete) segment 1. The segment 1 is formed into an arcuate plate shape by reinforced concrete and curved to form an outer surface 2, an inner surface 3, and a width direction (axial direction). Direction) and lengthwise direction (circumferential direction).
A plurality of joint recesses 8 are formed in a portion near the joint end surface 5 on the side of the side, and a bolt insertion hole 6 is formed through a flange portion (joint member) 7 extending from the joint recess 8 to the joint end surface 5. Then, as shown in FIG. 10, bolts 9 are passed through the joint recesses 8 of one segment 1 through the bolt insertion holes 6 where the joining end surfaces 5 are aligned with each other and are aligned with each other. Is screwed to the bolt 9 and the flange portions 7 are fastened to each other to connect the segments 1 to each other.
【0004】ところで、シールド工法は、一次覆工の後
にコンクリートによる二次巻き等を行って二次覆工をな
すが、近年では、耐食性が良好なコンクリートセグメン
トの出現や、経済性の向上等を鑑みて特に二次覆工を施
すことなく一次覆工のみでトンネル周壁を得ることが望
まれてきている。[0004] By the way, in the shield method, secondary lining is performed by performing secondary winding with concrete or the like after the primary lining. In recent years, however, the appearance of concrete segments having good corrosion resistance and the improvement of economic efficiency have been improved. In view of this, it has been desired to obtain the tunnel peripheral wall only with the primary lining without performing the secondary lining.
【0005】このように一次覆工のみとする場合、図
9、図10に示したセグメント1においては、外観性の
向上や、ボルト9、ナット10等の防錆、さらにはセグ
メント1自体の強度向上を目的として、継手凹所8内に
モルタル等の固結材を埋め、その表面をセグメント1の
内面3と面一にすることが行われる。継手凹所8内をモ
ルタル等の固結材で埋めるにあたっては、板等で継手凹
所8を塞いだ後、この板にあけた孔から固結材を注入
し、硬化後に板を除去するといった方法が考えられてい
る。[0005] When only the primary lining is used as described above, in the segment 1 shown in FIGS. 9 and 10, the appearance is improved, rust prevention of the bolt 9 and the nut 10, and the strength of the segment 1 itself is performed. For the purpose of improvement, a solidifying material such as mortar is buried in the joint recess 8, and the surface thereof is made flush with the inner surface 3 of the segment 1. When filling the joint recess 8 with a solidifying material such as mortar, the joint concave portion 8 is closed with a plate or the like, and then the solidifying material is injected from a hole formed in the plate, and the plate is removed after hardening. A way is being considered.
【0006】[0006]
【発明が解決しようとする課題】上記方法で継手凹所8
を面一に閉塞する方法は、煩雑かつ時間を要することが
容易に想定され、しかも硬化後の固結材が継手凹所8か
ら落下するおそれも懸念されるといった問題がある。The joint recess 8 is formed by the above method.
It is easily assumed that the method of closing the flat surface is complicated and time-consuming, and furthermore, there is a problem that the hardened consolidated material may fall from the joint recess 8.
【0007】本発明は上記事情に鑑みてなされたもので
あって、コンクリートセグメントの継手凹所を容易かつ
短時間で閉塞でき、充填材が落下するおそれのないコン
クリートセグメントにおける継手凹所の閉塞構造を提供
することを目的としている。The present invention has been made in view of the above circumstances, and has a structure in which a joint recess in a concrete segment can be closed easily and in a short time and a filler does not drop in a concrete segment. It is intended to provide.
【0008】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するためになされたものであって、継手凹所の開口周縁
が略矩形状に形成され、この周縁の相対向する2組の辺
部のうちの一方の組の辺部に、継手凹所の底部側に向け
て広がるアンダーカット状の切欠きが形成されることに
より係合部が設けられ、盤状の閉塞蓋を開口に配してか
らセグメント内面に沿って略90度回転させることによ
り、閉塞蓋の周部を前記係合部に係合させ、その状態で
閉塞蓋の表面がセグメント内面と略面一であることを特
徴としている。SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and an opening periphery of a joint recess is formed in a substantially rectangular shape, and two sets of opposed sides of the periphery are provided. An engagement portion is provided by forming an undercut notch extending toward the bottom side of the joint recess in one set of side portions of the pair of portions, and a disc-shaped closing lid is provided in the opening. Then, by rotating about 90 degrees along the inner surface of the segment, the peripheral portion of the closing lid is engaged with the engaging portion, and in this state, the surface of the closing lid is substantially flush with the inner surface of the segment. And
【0009】また、閉塞蓋に、継手凹所内にモルタル等
の固結材を注入するための注入口を形成し、この注入口
から継手凹所内に固結材を注入・充填することを含む。[0009] In addition, the method includes forming an injection port for injecting a mortar or other consolidation material into the joint recess in the closing lid, and injecting and filling the consolidation material into the joint recess from the injection port.
【0010】[0010]
【作用】本発明によれば、閉塞蓋を略90度回転させる
ことにより閉塞蓋を継手凹所の開口に装着できるととも
にその開口をセグメントの内面と面一に閉塞でき、した
がって継手凹所の閉塞作業を容易かつ短時間で行うこと
ができる。また、閉塞蓋は周部が係合部に係合して落下
不能であるから、継手凹所内に充填されたモルタル等の
固結材が落下するといったおそれはない。また、継手凹
所内への固結材の充填は、閉塞蓋に固結材の注入口を形
成しておき、そこから行うようにすればよい。According to the present invention, by closing the closure lid by approximately 90 degrees, the closure lid can be mounted on the opening of the joint recess and the opening can be closed flush with the inner surface of the segment. Work can be performed easily and in a short time. Further, since the peripheral portion of the closing lid cannot be dropped because it is engaged with the engaging portion, there is no possibility that the solidified material such as mortar filled in the joint recess will fall. Further, the filling of the joint material into the joint recess may be performed by forming an inlet for the solid material in the closing lid in advance.
【0011】[0011]
【実施例】以下、図面を参照して本発明の一実施例を説
明する。図面において図9、図10と同一構成要素には
同一の符号を付して説明を簡略にする。図1ないし図3
に示すように、継手凹所8は、その周縁が略正方形に形
成され、この周縁の相対向する2組の辺部11A・11
B、12A・12Bは、それぞれセグメント1の幅方
向、長さ方向に沿っている。辺部から辺部への4箇所の
移行部(角部)は、湾曲面状に形成されている。セグメ
ント1の幅方向に沿う相対向する2つの辺部11A、1
1Bには、継手凹所8の底部側に向けて広がるアンダー
カット状の切欠き13がそれぞれ形成されている。この
切欠き13は辺部11A、11Bの両端間にわたって円
弧状に形成され、この切欠き13により、内面3と平行
な当接面14および所定角度の斜面15が形成されてお
り、これらによって辺部11A、11Bには、ヒサシ状
の係合部16が設けられている。An embodiment of the present invention will be described below with reference to the drawings. In the drawings, the same components as those in FIGS. 9 and 10 are denoted by the same reference numerals, and the description will be simplified. 1 to 3
As shown in the figure, the joint recess 8 has a substantially square peripheral edge, and two sets of opposing sides 11A, 11A of the peripheral edge.
B, 12A and 12B are respectively along the width direction and the length direction of the segment 1. Four transitions (corners) from side to side are formed in a curved surface shape. Two opposing sides 11A, 1 along the width direction of the segment 1
An undercut 13 extending toward the bottom of the joint recess 8 is formed in each of the joint recesses 1B. The notch 13 is formed in an arc shape between both ends of the side portions 11A and 11B, and the notch 13 forms a contact surface 14 parallel to the inner surface 3 and a slope 15 at a predetermined angle. The portions 11A and 11B are provided with a pair of eaves-shaped engaging portions 16.
【0012】一方、セグメント1の長さ方向に沿う相対
向する2つの辺部12A、12Bには、継手凹所8の開
口側に向かって広がる座ぐり状の切欠き23が形成され
ている。この切欠き23は、辺部12A、12Bの両端
間にわたって円弧状に形成され、この切欠き23によ
り、内面3と平行な突当面24および所定角度の斜面2
5が形成され、これらによって、辺部12A、12Bに
は、開放部26が設けられている。突当面24は、係合
部16の当接面14と面一となっている。On the other hand, two opposing sides 12A and 12B along the length direction of the segment 1 are formed with a counterbore-shaped notch 23 extending toward the opening side of the joint recess 8. The notch 23 is formed in an arc shape between both ends of the side portions 12A and 12B. The notch 23 allows the abutment surface 24 parallel to the inner surface 3 and the inclined surface 2 at a predetermined angle.
5 are formed, and thereby, the open portions 26 are provided in the side portions 12A and 12B. The abutment surface 24 is flush with the abutment surface 14 of the engagement portion 16.
【0013】係合部16および開放部26の切欠き1
3、23の円弧状の内隅縁17、27は、径R0の同心
・同径の円として連続しており、この径R0は、開放部
26の外隅縁28の径R1よりも短く設定されている。
したがって、係合部16および開放部26の周縁である
外隅縁18、28は、セグメント1の幅方向に沿って長
い長円形を呈している。Notch 1 of engaging portion 16 and opening portion 26
The arc-shaped inner corners 17 and 27 of 3 and 23 are continuous as a circle having the same diameter and the same diameter R0, and this diameter R0 is set shorter than the diameter R1 of the outer corner edge 28 of the opening 26. Have been.
Therefore, the outer corner edges 18 and 28, which are the peripheral edges of the engaging portion 16 and the opening portion 26, have a long oval shape along the width direction of the segment 1.
【0014】図4は継手凹所8を塞ぐ閉塞蓋31を示し
ており、この閉塞蓋31は、前記開放部26の内隅縁2
7から係合部16の外隅縁18にわたる長円形に対応し
た形状をなす盤状のもので、その両端縁は、前記係合部
16の切欠き13に対応した角度のテーパ面32aが形
成されてテーパ部32とされている。また、閉塞蓋31
の中央には、モルタル注入口33が形成されている。閉
塞蓋31は、ファイバーコンクリート等の耐食性の高い
材料でできていると好ましい。FIG. 4 shows a closing lid 31 for closing the joint recess 8.
7 is a disc-like shape having a shape corresponding to an oval extending from the outer corner edge 18 of the engaging portion 16 to a tapered surface 32 a having an angle corresponding to the notch 13 of the engaging portion 16 at both end edges. Thus, the tapered portion 32 is formed. In addition, the closing lid 31
A mortar injection port 33 is formed at the center of the mortar. The closing lid 31 is preferably made of a material having high corrosion resistance such as fiber concrete.
【0015】この閉塞蓋31は、図5および図6に示す
ように、両端のテーパ面32aを表側にして、テーパ部
32の裏側を開放部26の両突当面24にそれぞれ突当
て、次にモルタル注入口33を中心に90度回転させる
ことにより、継手凹所8を閉塞してセグメント1に装着
されている。すなわち、このように閉塞蓋31を90度
回転させると、両端のテーパ部が、開放部26の内隅縁
から係合部16の切欠き13内に摺接しながら入り込
み、落下不能の状態となって継手凹所8に装着される。
この装着状態で、図7および図8に示すように、テーパ
部32のテーパ面32aは斜面15に、裏面が当接面1
4に密着し、表面はセグメント1の内面3と面一にな
る。また、この装着状態から閉塞蓋31を90度回転さ
せると、テーパ部32が開放部26に移り、取り外すこ
とができる。なお、図7および図8ではボルト、ナット
の図示を省略している。As shown in FIGS. 5 and 6, the closing lid 31 has the tapered surfaces 32a at both ends facing up, and the back side of the tapered portion 32 abuts against the two abutting surfaces 24 of the opening 26, respectively. The joint recess 8 is closed by being rotated by 90 degrees about the mortar injection port 33 and attached to the segment 1. That is, when the closing lid 31 is rotated by 90 degrees in this way, the tapered portions at both ends slide into the notch 13 of the engaging portion 16 from the inner corner edge of the opening portion 26 and enter the notch 13 so that the falling portion cannot be dropped. To the joint recess 8.
In this mounting state, as shown in FIGS. 7 and 8, the tapered surface 32a of the tapered portion 32 is on the inclined surface 15, and the back surface is on the contact surface 1
4 and the surface is flush with the inner surface 3 of the segment 1. When the closing lid 31 is rotated 90 degrees from this mounted state, the tapered portion 32 moves to the open portion 26 and can be removed. 7 and 8, illustration of bolts and nuts is omitted.
【0016】上記のように閉塞蓋31が継手凹所8に装
着されたら、モルタル注入口33から継手凹所8内にモ
ルタル(固結材)Mが充填される。モルタルMの充填は
必要に応じてであり、必要ない場合には、閉塞蓋31に
モルタル注入口33は形成しない。When the closing lid 31 is attached to the joint recess 8 as described above, the mortar (consolidating material) M is filled into the joint recess 8 from the mortar inlet 33. The filling of the mortar M is as required, and if not necessary, the mortar inlet 33 is not formed in the closing lid 31.
【0017】本実施例の継手凹所8を閉塞する構造によ
れば、閉塞蓋31の90度回転により継手凹所8を簡単
に継手凹所8の開口に装着できてその開口をセグメント
1の内面3と面一に閉塞できる。すなわち、継手凹所8
の閉塞作業を容易かつ短時間で行うことができる。ま
た、閉塞蓋31は、テーパ部32がセグメント1の係合
部16に係合して落下不能であるから、したがって継手
凹所8内に充填されたモルタルMが落下するといったお
それはない。According to the structure for closing the joint recess 8 of the present embodiment, the joint recess 8 can be easily mounted in the opening of the joint recess 8 by rotating the closing lid 31 by 90 degrees, and the opening is formed in the segment 1. It can be closed flush with the inner surface 3. That is, the joint recess 8
Can be performed easily and in a short time. In addition, since the tapered portion 32 of the closing lid 31 cannot be dropped because the tapered portion 32 is engaged with the engaging portion 16 of the segment 1, there is no possibility that the mortar M filled in the joint recess 8 falls.
【0018】[0018]
【発明の効果】以上説明したように本発明のコンクリー
トセグメントにおける継手凹所の閉塞構造によれば、継
手凹所の開口周縁が略矩形状に形成され、この周縁の相
対向する2組の辺部のうちの一方の組の辺部に、継手凹
所の底部側に向けて広がるアンダーカット状の切欠きが
形成されることにより係合部が設けられ、盤状の閉塞蓋
を開口に配してからセグメント内面に沿って略90度回
転させることにより、閉塞蓋の周部を前記係合部に係合
させ、その状態で閉塞蓋の表面がセグメント内面と略面
一であることを特徴とするもので、継手凹所の閉塞作業
が容易かつ短時間で済むとともに、閉塞蓋がセグメント
に係合して外れないから、継手凹所内に充填したモルタ
ル等の固結材が落下するおそれもないといった効果を奏
する。As described above, according to the closed structure of the joint recess in the concrete segment of the present invention, the periphery of the opening of the joint recess is formed in a substantially rectangular shape, and two sets of opposing sides of the periphery are formed. An engagement portion is provided by forming an undercut notch extending toward the bottom side of the joint recess in one set of side portions of the pair of portions, and a disc-shaped closing lid is provided in the opening. Then, by rotating about 90 degrees along the inner surface of the segment, the peripheral portion of the closing lid is engaged with the engaging portion, and in this state, the surface of the closing lid is substantially flush with the inner surface of the segment. Since the work for closing the joint recess can be easily and quickly completed, and since the closing lid does not come off due to engagement with the segment, there is a possibility that a solidified material such as mortar filled in the joint recess may fall. There is an effect that there is no.
【図1】本発明の一実施例が適用されるセグメントの継
手凹所が形成された接合端部の側断面図である。FIG. 1 is a side sectional view of a joint end of a segment to which an embodiment of the present invention is applied, in which a joint recess is formed.
【図2】同正断面図である。FIG. 2 is a front sectional view of the same.
【図3】同内面図である。FIG. 3 is an inner view of the same.
【図4】閉塞蓋の平面図である。FIG. 4 is a plan view of the closing lid.
【図5】閉塞蓋により継手凹所を塞ぐ際のセット時の状
態を示す内面図である。FIG. 5 is an inner view showing a state at the time of setting when the joint recess is closed by the closing lid.
【図6】閉塞蓋により継手凹所を塞いだ状態を示す内面
図である。FIG. 6 is an inner view showing a state where the joint recess is closed by a closing lid.
【図7】同側断面図である。FIG. 7 is a sectional side view of the same.
【図8】同正断面図である。FIG. 8 is a front sectional view of the same.
【図9】コンクリートセグメントの一般例を示す斜視図
である。FIG. 9 is a perspective view showing a general example of a concrete segment.
【図10】同セグメントの継手部の側断面図である。FIG. 10 is a side sectional view of a joint portion of the segment.
1 コンクリートセグメント 3 セグメント内面 5 接合端面 7 フランジ部(継手部材) 8 継手凹所 9 ボルト 11A、11B 辺部 13 切欠き 16 係合部 31 閉塞蓋 32 テーパ部 33 モルタル注入口 M モルタル DESCRIPTION OF SYMBOLS 1 Concrete segment 3 Segment inner surface 5 Joining end face 7 Flange part (joint member) 8 Joint recess 9 Bolt 11A, 11B side part 13 Notch 16 Engagement part 31 Closure lid 32 Taper part 33 Mortar injection port M Mortar
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) E21D 11/04 E21D 11/08 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. 7 , DB name) E21D 11/04 E21D 11/08
Claims (3)
端面に埋設された継手部材どうしを合わせるとともに、
双方の継手部材の内側に形成された継手凹所のうちの一
方から両継手部材に貫通させたボルトでこれら継手部材
どうしを締結した後、各継手凹所を、継手凹所が形成さ
れたセグメント内面に沿って略平坦に閉塞する構造であ
って、 継手凹所の開口周縁が略矩形状に形成され、この周縁の
相対向する2組の辺部のうちの一方の組の辺部に、継手
凹所の底部側に向けて広がるアンダーカット状の切欠き
が形成されることにより係合部が設けられ、盤状の閉塞
蓋を開口に配してからセグメント内面に沿って略90度
回転させることにより、閉塞蓋の周部を前記係合部に係
合させ、その状態で閉塞蓋の表面がセグメント内面と略
面一であることを特徴とするコンクリートセグメントに
おける継手凹所の閉塞構造。1. A joint member embedded in a joint end face of a concrete segment to be joined is joined together,
After fastening these joint members with bolts penetrating from both of the joint recesses formed on the inside of both joint members to each joint member, each joint recess is replaced with a segment in which the joint recess is formed. It is a structure that is substantially flatly closed along the inner surface, and the periphery of the opening of the joint recess is formed in a substantially rectangular shape, and one of two opposite sides of the periphery has one side, An engagement portion is provided by forming an undercut notch extending toward the bottom side of the joint recess, and a disc-shaped closing lid is arranged at the opening, and then rotated approximately 90 degrees along the inner surface of the segment. The closing structure of the joint recess in the concrete segment is characterized in that the peripheral portion of the closing lid is engaged with the engaging portion, and in this state, the surface of the closing lid is substantially flush with the inner surface of the segment.
端面に埋設された継手部材どうしを合わせるとともに、
双方の継手部材の内側に形成された継手凹所のうちの一
方から両継手部材に貫通させたボルトでこれら継手部材
どうしを締結した後、各継手凹所を、継手凹所が形成さ
れたセグメント内面に沿って略平坦に閉塞する構造であ
って、 継手凹所の開口周縁が略矩形状に形成され、この周縁の
相対向する2組の辺部のうちの一方の組の辺部に、継手
凹所の底部側に向けて広がるアンダーカット状の切欠き
が形成されることにより係合部が設けられ、盤状の閉塞
蓋を開口に配してからセグメント内面に沿って略90度
回転させることにより、閉塞蓋の周部を前記係合部に係
合させ、その状態で閉塞蓋の表面がセグメント内面と略
面一であり、 継手凹所内に、モルタル等の固結材が充填されているこ
とを特徴とするコンクリートセグメントにおける継手凹
所の閉塞構造。2. A joint member embedded in a joint end face of a concrete segment to be joined is combined with each other,
After fastening these joint members with bolts penetrating from both of the joint recesses formed on the inside of both joint members to each joint member, each joint recess is replaced with a segment in which the joint recess is formed. It is a structure that is substantially flatly closed along the inner surface, and the periphery of the opening of the joint recess is formed in a substantially rectangular shape, and one of two opposite sides of the periphery has one side, An engagement portion is provided by forming an undercut notch extending toward the bottom side of the joint recess, and a disc-shaped closing lid is arranged at the opening, and then rotated approximately 90 degrees along the inner surface of the segment. By doing so, the peripheral portion of the closing lid is engaged with the engaging portion, and in this state, the surface of the closing lid is substantially flush with the inner surface of the segment, and the joint recess is filled with a solidifying material such as mortar. Joints in the concrete segment Closure structure of the recess.
の固結材を注入するための注入口が形成されていること
を特徴とする請求項2記載のコンクリートセグメントに
おける継手凹所の閉塞構造。3. The joint closure in a concrete segment according to claim 2, wherein an inlet for injecting a mortar or other solidifying material into the joint recess is formed in the closure lid. Construction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP09896494A JP3345168B2 (en) | 1994-05-12 | 1994-05-12 | Closed structure of joint recess in concrete segment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP09896494A JP3345168B2 (en) | 1994-05-12 | 1994-05-12 | Closed structure of joint recess in concrete segment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07305595A JPH07305595A (en) | 1995-11-21 |
JP3345168B2 true JP3345168B2 (en) | 2002-11-18 |
Family
ID=14233757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP09896494A Expired - Fee Related JP3345168B2 (en) | 1994-05-12 | 1994-05-12 | Closed structure of joint recess in concrete segment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3345168B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4588608B2 (en) * | 2005-10-19 | 2010-12-01 | 渡辺パイプ・西日本株式会社 | Blocking structure for connecting recess of segment |
JP4629550B2 (en) * | 2005-10-19 | 2011-02-09 | 渡辺パイプ・西日本株式会社 | Connecting structure for connecting recess and connecting member of connecting recess |
-
1994
- 1994-05-12 JP JP09896494A patent/JP3345168B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07305595A (en) | 1995-11-21 |
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