JP2651587B2 - Method of manufacturing steel segments - Google Patents
Method of manufacturing steel segmentsInfo
- Publication number
- JP2651587B2 JP2651587B2 JP63039181A JP3918188A JP2651587B2 JP 2651587 B2 JP2651587 B2 JP 2651587B2 JP 63039181 A JP63039181 A JP 63039181A JP 3918188 A JP3918188 A JP 3918188A JP 2651587 B2 JP2651587 B2 JP 2651587B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- joint
- main girder
- skin
- skin plate
- 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)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、シールド工法によって掘削されたトンネル
壁面に施工する鋼製セグメントの製造方法に関するもの
である。The present invention relates to a method for manufacturing a steel segment to be installed on a tunnel wall excavated by a shield method.
従来から、鋼製セグメントを製造するには、矩形状の
鋼板を凹弧状に彎曲させてスキンプレート（ａ）を形成
し、このスキンプレート（ａ）の凹弧面の両側端縁に、
第10図に示すように、スキンプレート（ａ）と同一彎曲
度に弓形状に彎曲した主桁板（ｂ）の下端凸弧状端面の
半幅部分を当接させると共にスキンプレート（ａ）の凹
弧面の前後直線端縁に細長長方形状の継手板（ｃ）の下
端面半幅部分を当接させ、スキンプレート（ａ）から突
出したこれらの主桁板（ｂ）の下端面及び継手板（ｃ）
の下端面とスキンプレート（ａ）の端面間を隅肉溶接
（ｄ）により一体に固着することにより、スキンプレー
ト（ａ）の凹弧面周縁にこれらの主桁板（ｂ）と継手板
（ｃ）とによる額縁状の枠を有するセグメントに形成し
ている。Conventionally, in order to manufacture a steel segment, a rectangular steel plate is curved in a concave arc shape to form a skin plate (a).
As shown in FIG. 10, the half width portion of the lower end convex arc-shaped end surface of the main girder plate (b) curved in the shape of a bow with the same curvature as the skin plate (a) is brought into contact with the concave arc of the skin plate (a). The half width portion of the lower end surface of the elongated rectangular joint plate (c) is brought into contact with the front and rear straight edges of the surface, and the lower end surfaces of these main girder plates (b) projecting from the skin plate (a) and the joint plate (c) )
The lower end surface of the skin plate (a) and the end surface of the skin plate (a) are integrally fixed by fillet welding (d), so that the main girder plate (b) and the joint plate ( c) to form a segment having a frame-like frame.
しかしながら、予め切断加工したスキンプレート
（ａ）や主桁板（ｂ）、継手板（ｃ）等の各部材の仕上
げ寸法はかならずしも正確ではなく、しかも、入手によ
って溶接を行うものであるから、製品にバラツキが生じ
る。特に、セグメントはトンネル壁面の周方向に施工す
る際に、隣接するセグメントの継手板の外面同士を接合
しながらボルト、ナットにより連結していくものである
が、継手板（ｃ）はスキンプレート（ａ）に対して前述
したような隅肉溶接により固着するものであるから、隅
肉溶接部を直角隅角部に形成することができないため
に、接合した継手板（ｃ）（ｃ）間にトンネル長さ方向
のＶ字状の溝が生じ、又、スキンプレート（ａ）に対す
る立ち上がり角度を精度よく直角にすることが困難であ
ると共にスキンプレート（ａ）の幅方向にその長さ方向
を完全に一致させることができず、その上、継手板
（ｃ）は加工時においてその表面に波打ち状凹凸面が生
じているので、上述したようにセグメント同士を接合し
た場合、精度のよい接合が行えないと共に接合面間に隙
間が生じて地下水が浸入するという問題点があった。However, the finished dimensions of the members, such as the skin plate (a), the main girder plate (b), and the joint plate (c), which have been cut in advance, are not always accurate, and moreover, the product is welded as it is obtained. Variation occurs. Particularly, when the segments are constructed in the circumferential direction of the tunnel wall surface, the outer surfaces of the joint plates of the adjacent segments are joined together by bolts and nuts while joining the outer surfaces thereof, but the joint plate (c) is a skin plate ( Since it is fixed by fillet welding as described above with respect to a), a fillet weld cannot be formed at a right-angled corner, and therefore, between the joined joint plates (c) and (c). A V-shaped groove is formed in the length direction of the tunnel, and it is difficult to accurately make the rising angle with respect to the skin plate (a) a right angle, and the length direction is completely set in the width direction of the skin plate (a). In addition, since the joint plate (c) has a wavy irregular surface on its surface during processing, when the segments are joined as described above, accurate joining is performed. Gap between bonding surfaces groundwater is disadvantageously entering occur with no.
又、トンネル壁面に施工する際に、セグメントの継手
板同士をボルトによって結合しているが、継手板（ｃ）
に穿設したボルト孔は通常、ボルトよりも大径に形成し
ているために、第11図に示すようにセグメントの継手板
（ｃ）（ｃ）同士に段状のズレが生じ、同様に主桁板
（ｂ）（ｂ）同士にも第12図に示すようにズレが生じて
精度のよい施工が期待できないという問題点があった。Also, the joint plates of the segments are connected to each other by bolts when installing on the tunnel wall surface.
Since the bolt hole formed in the hole is usually formed with a larger diameter than the bolt, a step-like displacement occurs between the joint plates (c) and (c) of the segment as shown in FIG. As shown in FIG. 12, the main girder plates (b) and (b) are displaced from each other, and there is a problem that accurate construction cannot be expected.
本発明はこのような問題点を解消し、精度のよい鋼製
セグメントを得ることを目的とする鋼製セグメントの製
造方法を提供するものである。The present invention has been made to solve the above problems and to provide a method for manufacturing a steel segment for the purpose of obtaining an accurate steel segment.
上記目的を達成するために、本発明の鋼製セグメント
の製造方法は、幅及び長さが仕上がり設計寸法よりもや
ゝ大きく形成されている弧状に彎曲したスキンプレート
の凹弧面の両側端縁上に、厚さが仕上がり設計寸法より
も厚く形成され且つ下端に外面から内面に向かって開先
部を全長に亘って設けている彎曲主桁板の下端面を当接
すると共に上記スキンプレートの前後直線端縁上に、厚
さ及び長さが仕上がり設計寸法よりも大きく形成され且
つ下端に外面から内面に向かって開先部を全長に亘って
設けている継手板の下端面を当接させ、この状態で上記
開先部に外側から仕上がり設計寸法よりも内側に至るま
での溶接を行ってスキンプレートの四方端縁上に彎曲主
桁板と継手板とを一体的に固着し、しかるのち、スキン
プレートの幅及び長さが設計寸法となるように且つスキ
ンプレートと主桁板及び継手板との夫々の接合角度が設
計角度となるようにスキンプレートの端面から主桁板及
び継手板の外面全面を面一に切削し、さらに、継手板に
位置決めをするためのノックピン用孔を穿設することを
特徴とするものである。In order to achieve the above object, a method for manufacturing a steel segment according to the present invention includes a method of manufacturing a steel segment, comprising the steps of: forming an arc-shaped curved skin plate having a width and a length slightly larger than a finished design dimension; The lower end surface of a curved main girder plate having a thickness formed to be thicker than the finished design dimension and having a groove portion extending from the outer surface to the inner surface over the entire length at the lower end is brought into contact with the front and rear of the skin plate. On the straight edge, the lower end face of the joint plate having a thickness and a length larger than the finished design dimensions and having a groove at the lower end from the outer surface to the inner surface over the entire length is brought into contact, In this state, welding is performed from the outside to the inside of the finished design dimension from the outside to the groove, and the curved main girder plate and the joint plate are integrally fixed on the four edges of the skin plate, and thereafter, Skin plate width and length The entire outer surfaces of the main girder plate and the joint plate are cut from the end face of the skin plate so as to have the design dimensions and the joint angles of the skin plate and the main girder plate and the joint plate become the design angles. Further, a knock pin hole for positioning is formed in the joint plate.
主桁板及び継手板の下端に設けている開先部にスキン
プレートの外側から溶接を行うことによってスキンプレ
ートの四方端縁上に主桁板及び継手板を容易に固着、一
体化することができる。By welding the groove provided at the lower end of the main girder plate and the joint plate from the outside of the skin plate, the main girder plate and the joint plate can be easily fixed and integrated on the four edges of the skin plate. it can.
さらに、溶接後、スキンプレートの四方端面から主桁
板及び継手板の外面全面に亘って、切削加工するもので
あるから、セグメント組立時においてセグメント同士の
接合面となるスキンプレートの四方端面から主桁板及び
継手板の外面を凹凸のない平坦な面に形成することがで
きると共に主桁板及び継手板の外面をスキンプレートの
彎曲面に対して正確な角度となるように形成することが
でき、従って、トンネル覆工時において接合するセグメ
ントのスキンプレート端面間や継手板間及び主桁板間に
隙間を生じさせない全面的に密接接合が可能な精度の良
いセグメントを製造することができる。Furthermore, after welding, the entire outer surfaces of the main girder plate and the joint plate are cut from the four end surfaces of the skin plate, so that the main surface of the skin plate becomes the joint surface between the segments when the segments are assembled. The outer surfaces of the girder plate and the joint plate can be formed as flat surfaces without irregularities, and the outer surfaces of the main girder plate and the joint plate can be formed to have an accurate angle with respect to the curved surface of the skin plate. Therefore, it is possible to manufacture a high-precision segment that can be tightly joined on the whole surface without generating a gap between skin plate end faces, joint plates, and main girder plates of segments to be joined at the time of tunnel lining.
又、互いに接合するセグメントの継手板にノックピン
用孔を設ける場合、特に、上記切削加工後に穿孔するこ
とによって正確な位置に設けることができ、従って、セ
グメント同士の組立時において、これらの孔間にノック
ピンを挿通することにより継手板同士、ひいては主桁板
同士に段状のズレが生じることなく、継手板同士や主桁
板同士のボルト孔間を正確に合致させて精度のよい施工
が可能となると共に組立作業の能率化を図ることができ
る。In addition, in the case of providing a knock pin hole in the joint plate of the segments to be joined to each other, in particular, it can be provided at an accurate position by drilling after the above-mentioned cutting, and therefore, when assembling the segments, between these holes. By inserting the dowel pins, there is no step-like displacement between the joint plates, and thus between the main girder plates, and it is possible to accurately match the gap between the bolt holes between the joint plates and between the main girder plates, enabling accurate construction. In addition, the efficiency of the assembly work can be improved.
本発明の実施例を図面について説明すると、第１図及
び第２図において、（１）は幅及び長さを仕上がり設計
寸法よりもやや大きく形成している矩形状の鋼板製スキ
ンプレートで、中央部から長さ方向に前後両端縁に向か
って徐々に一方の両側（図においては上方側）に所定の
曲率半径でもって弧状に彎曲させてある。Referring to the drawings, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In FIG. 1 and FIG. 2, (1) is a rectangular steel plate skin plate whose width and length are slightly larger than the finished design dimensions. The portion is gradually curved in an arc shape with a predetermined radius of curvature on one side (upper side in the figure) toward the front and rear end edges in the length direction from the portion.
（２）は鋼板製スキンプレート（１）の両側端縁に溶
接によって一体に固着される主桁板で、長さ方向にスキ
ンプレート（１）と同一彎曲度に彎曲させてその下端凸
弧面（2a）をスキンプレート（１）の彎曲両側端縁に長
さ方向に密接させるように形成してある。(2) is a main girder plate which is integrally fixed to both side edges of the skin plate (1) made of a steel plate by welding. The main girder plate is bent to the same curvature as the skin plate (1) in the longitudinal direction and has a lower end convex arc surface. (2a) is formed so as to be closely in the longitudinal direction to both side edges of the curved surface of the skin plate (1).
（３）はスキンプレート（１）の前後直線端縁に固着
する長方形状の継手板であり、上記主桁板（２）と共に
その厚さが仕上がり設計寸法よりも厚く形成されてあ
る。(3) is a rectangular joint plate fixed to the front and rear linear edges of the skin plate (1), and the thickness thereof is formed larger than the finished design dimensions together with the main girder plate (2).
これらの彎曲主桁板（２）及び継手板（３）はスキン
プレート（１）と同じく鋼製であり、長さ方向に一定間
隔毎に複数個のボルト孔（４）（４）・・・、（５）
（５）・・・をそれぞれ穿設していると共に長さ方向に
一定間隔を存して一対のノックピン用孔（６）（６）、
（７）（７）をボルト孔（４）と同様にそれぞれ内外面
間に貫通した状態で穿設してある。なお、これらのノッ
クピン用孔（６）（７）は夫々一個ずつ設けておけばよ
い。The curved main girder plate (2) and the joint plate (3) are made of steel like the skin plate (1), and a plurality of bolt holes (4) (4) at regular intervals in the longitudinal direction. , (5)
(5) ... and a pair of knock pin holes (6) (6) at a certain interval in the length direction.
(7) Like (7), the bolt hole (4) is formed so as to penetrate between the inner and outer surfaces. The knock pin holes (6) and (7) may be provided one by one.
さらに、彎曲主桁板（２）の長さはスキンプレート
（１）の長さよりも継手板（３）の２枚分の厚みだけ短
く形成されていると共に継手板（３）の長さはスキンプ
レート（１）の幅と同等に形成されてあり、又、これら
の主桁板（２）と継手板（３）の下端面には、第４図に
示すように外面側から面取形状に切欠形成された開先部
（８）（９）をそれぞれ全長に亘って設けてある。The length of the curved main girder plate (2) is shorter than the length of the skin plate (1) by the thickness of two joint plates (3), and the length of the joint plate (3) is smaller than the skin plate (1). The main girder plate (2) and the lower end surfaces of the joint plate (3) are formed into a chamfered shape from the outer surface side as shown in FIG. Notched groove portions (8) and (9) are respectively provided over the entire length.
このように形成したスキンプレート（１）に一対の主
桁板（２）（２）と継手板（３）（３）を夫々溶接して
セグメントを製造するには、まず、スキンプレート
（１）の凹弧面の彎曲両側端縁上に主桁板（２）の下端
凸弧面（2a）を、開先部（８）を外方に向け且つその外
面をスキンプレート（１）の側端面に対して面一に連続
するように全面的に密接させると共に、スキンプレート
（１）の前後直線端縁上に継手板（３）の下端面を、開
先部（９）を外方に向け且つその外面をスキンプレート
（１）の端面に対して面一となるように密接させ、その
両端内面を両主桁板（２）（２）の端面に当接させた状
態にする。To manufacture a segment by welding a pair of main girders (2) and (2) and joint plates (3) and (3) to the skin plate (1) thus formed, first, the skin plate (1) The lower end convex arc surface (2a) of the main girder plate (2) is oriented on the both side edges of the curved surface of the concave arc surface of the main girder plate (2), the groove portion (8) is directed outward, and the outer surface is the side end surface of the skin plate (1). With the joint plate (3) on the front and rear straight edges of the skin plate (1) with the groove (9) facing outward. In addition, the outer surface thereof is brought into close contact with the end surface of the skin plate (1) so as to be flush, and the inner surfaces of both ends are brought into contact with the end surfaces of both main girder plates (2) and (2).
次いで、スキンプレート（１）に対して主桁板（２）
（２）を略直角となるように保持した状態で、スキンプ
レート（１）の両端部上面と主桁板（２）（２）の開先
部（８）との空間部に溶接（10）を行って主桁板（２）
（２）をスキンプレート（１）に固着する。Next, the main girder plate (2) against the skin plate (1)
While holding (2) at a substantially right angle, welding (10) is performed on the space between the upper surfaces of both ends of the skin plate (1) and the groove (8) of the main girder plates (2) and (2). The main girder plate (2)
(2) is fixed to the skin plate (1).
同様にして、スキンプレート（１）の前後直線端縁上
に、前述したように継手板（３）（３）を配設してその
開先部（９）内に溶接（10）を行うことにより継手板
（３）（３）をスキンプレート（１）に対して主桁板
（２）と同様にスキンプレート（１）の法線方向等の所
望の角度に固着する。Similarly, the joint plates (3) and (3) are disposed on the front and rear straight edges of the skin plate (1) as described above, and welding (10) is performed in the groove (9). Thus, the joint plates (3) and (3) are fixed to the skin plate (1) at a desired angle such as the normal direction of the skin plate (1) in the same manner as the main girder plate (2).
なお、スキンプレート（１）に対する主桁板（２）と
継手板（３）（３）との溶接作業はいずれを先に行って
もよい。Either of the work of welding the main girder plate (2) and the joint plates (3) and (3) to the skin plate (1) may be performed first.
こうして、スキンプレート（１）の凹弧面の四方端縁
部上に主桁板（２）（２）と継手板（３）（３）による
枠体を形成したのち、NC制御による切削加工機を使用し
てスキンプレート（１）の四方端面から主桁板（２）
（２）及び継手板（３）（３）の外面を第５図に示すよ
うに全面に亘って切削（12）して、幅及び長さ共に所定
寸法のセグメントに形成すると共に主桁板（２）（２）
及び継手板（３）（３）の外面を凹凸のない平坦な面に
形成し、さらに、主桁板（２）（２）及び継手板（３）
（３）の外面をスキンプレートに対して正確な直角度或
いは所定の角度となるように切削するものである。In this way, after forming the frame by the main girder plates (2) and (2) and the joint plates (3) and (3) on the four edges of the concave arc surface of the skin plate (1), a cutting machine controlled by NC. The main girder plate (2) from the four end faces of the skin plate (1) using
(2) and the outer surfaces of the joint plates (3) and (3) are cut (12) over the entire surface as shown in FIG. 5 to form segments of predetermined dimensions in both width and length, and the main girder plate (3). 2) (2)
The outer surfaces of the joint plates (3) and (3) are formed as flat surfaces without irregularities, and the main girder plates (2) and (2) and the joint plate (3)
(3) The outer surface is cut so as to have an accurate right angle or a predetermined angle with respect to the skin plate.
なお、主桁板（２）（２）及び継手板（３）（３）に
穿設されるボルト孔（４）（５）及びノックピン用孔
（６）（７）は、スキンプレート（１）に主桁板（２）
や継手板（３）を溶接する前に設けておいてもよく、
又、上記切削加工機による切削加工後、或いは加工前に
穿設しておいてもよい。The bolt holes (4) (5) and the knock pin holes (6) (7) formed in the main girder plates (2) (2) and the joint plates (3) (3) are the skin plate (1). To main girder plate (2)
Or the joint plate (3) may be provided before welding.
Also, the holes may be drilled after or before cutting by the cutting machine.
又、両主桁板（２）（２）の対向面間には、第３図に
示すように、複数の補強リブ（13）を溶接によって固着
してセグメントを構成してある。As shown in FIG. 3, a plurality of reinforcing ribs (13) are fixed by welding between the opposing surfaces of the main girder plates (2) and (2) to form a segment.
このようにして製造されたセグメントは、第６図に示
すように、トンネル内壁面に周方向に内張り状態に施工
されると共に、第８図に示すように長さ方向に並設させ
ながら順次施工されるものであるが、この際、周方向に
おいては互いに外面同士が接合するセグメントの継手板
（３）（３）のノックピン用孔（７）（７）間に、第７
図に示すように、該ノックピン用孔（７）の略同径のノ
ックピン（14）を挿嵌すれば、セグメント同士のズレが
防止されると共に継手板（３）（３）同士のボルト孔
（５）（５）が正確に位置決めされ、この状態で継手板
（３）（３）のボルト孔（５）（５）を介してボルト、
ナットにより強固に接続するものである。同様に、トン
ネルの長さ方向に接合するセグメントの主桁板（２）
（２）同士も、第９図に示すようにノックピン用孔
（６）（６）間にノックピン（14）を挿嵌してズレを防
止したのち、ボルト孔（４）（４）間をボルト、ナット
により固着して強固に連結するものである。The segments manufactured in this manner are applied to the inner wall surface of the tunnel in a circumferentially lining state as shown in FIG. 6, and are sequentially applied while being juxtaposed in the length direction as shown in FIG. At this time, in the circumferential direction, between the knock pin holes (7) (7) of the joint plates (3) (3) of the segments whose outer surfaces are joined to each other in the circumferential direction,
As shown in the figure, if a knock pin (14) having substantially the same diameter as the knock pin hole (7) is inserted, displacement of the segments can be prevented and bolt holes (3) of the joint plates (3) (3) can be prevented. 5) (5) is accurately positioned, and in this state, bolts, (5) (5)
It is connected firmly by a nut. Similarly, the main girder plate of the segment to be joined in the length direction of the tunnel (2)
(2) As shown in Fig. 9, the knock pins (14) are inserted between the knock pin holes (6) and (6) to prevent displacement, and then the bolt holes (4) and (4) are bolted. , And are firmly connected by nuts.
なお、以上の実施例においては、主桁板（２）と継手
板（３）とにノックピン用孔を設けたが、継手板（３）
にのみ設けておいてもよい。In the above embodiment, knock pin holes are provided in the main girder plate (2) and the joint plate (3).
May be provided only for
以上のように本発明の鋼製セグメントの製造方法によ
れば、幅及び長さが仕上がり設計寸法よりもやゝ大きく
形成されている弧状に彎曲したスキンプレートの凹弧面
の両側端縁上に、厚さが仕上がり設計寸法よりも厚く形
成され且つ下端に外面から内面に向かって開先部を全長
に亘って設けている彎曲主桁板の下端面を当接すると共
に上記スキンプレートの前後直線端縁上に、厚さ及び長
さが仕上がり設計寸法よりも大きく形成され且つ下端に
外面から内面に向かって開先部を全長に亘って設けてい
る継手板の下端面を当接させ、この状態で上記開先部に
外側から仕上がり設計寸法よりも内側に至るまでの溶接
を行ってスキンプレートの四方端縁上に彎曲主桁板と継
手板とを一体的に固着し、しかるのち、スキンプレート
の幅及び長さが設計寸法となるように且つスキンプレー
トと主桁板及び継手板との夫々の接合角度が設計角度と
なるようにスキンプレートの端面から主桁板及び継手板
の外面全面を面一に切削するものであるから、主桁板及
び継手板の下端に設けている開先部がスキンプレート端
縁から外側に向けて開口しているので、スキンプレート
の外側からスキンプレートの端縁上面に対する主桁板や
継手板の溶接作業が容易に且つ能率良く行えると共に仕
上がり設計寸法よりも内側に至るまで深く且つ全長に亘
って溶接することができるものである。As described above, according to the method for manufacturing a steel segment of the present invention, the width and the length are formed on both side edges of the concave arc surface of the arcuately curved skin plate formed to be slightly larger than the finished design dimension. The lower end surface of a curved main girder plate having a thickness formed to be larger than the finished design dimension and having a groove at the lower end extending from the outer surface to the inner surface over the entire length; On the edge, the lower end surface of a joint plate having a thickness and a length larger than the finished design dimensions and having a groove at the lower end extending from the outer surface to the inner surface over the entire length is brought into contact. The groove is welded from the outside to the inside of the finished design dimension from the outside to fix the curved main girder plate and the joint plate integrally on the four edges of the skin plate, and then the skin plate Designed for width and length The entire outer surface of the main girder plate and the joint plate is cut from the end face of the skin plate so that the joint angle between the skin plate and the main girder plate and the joint plate becomes the designed angle so as to be a law. Since the groove provided at the lower ends of the main girder plate and the joint plate is open outward from the edge of the skin plate, the main girder plate with respect to the upper surface of the edge of the skin plate from the outside of the skin plate, The joint plate can be welded easily and efficiently, and can be welded deeper and deeper than the finished design dimension over the entire length.
さらに、この溶接工程後、スキンプレートの四方端面
から主桁板及び継手板の外面全面に亘って切削加工する
ものであるから、セグメント組立時においてセグメント
同士の接合面となるスキンプレートの四方端面から主桁
板及び継手板の外面を凹凸のない平坦な面に形成するこ
とができると共に主桁板及び継手板の外面をスキンプレ
ートの彎曲面に対して所定角度、即ち、セグメント同士
を接合した際にその接合面が全面的に密接する角度とな
るように精度よく形成することができるものである。Furthermore, after this welding process, since the cutting process is performed over the entire outer surfaces of the main girder plate and the joint plate from the four end surfaces of the skin plate, the four end surfaces of the skin plate that are the joining surfaces of the segments at the time of segment assembly are used. The outer surfaces of the main girder plate and the joint plate can be formed as flat surfaces without irregularities, and the outer surfaces of the main girder plate and the joint plate have a predetermined angle with respect to the curved surface of the skin plate, that is, when the segments are joined to each other. It can be formed with high precision so that the joining surface is at an angle that makes the entire surface closely contact.
従って、上記溶接工程においてスキンプレートに対す
る主桁板及び継手板の固着に多少の狂いが生じていても
この切削工程によってその狂いを確実になくすることが
できると共にトンネル覆工時において、接合するセグメ
ントのスキンプレート端面間や継手板間及び主桁板間に
隙間を生じさせないセグメントが得られ、このセグメン
トを使用することによって地下水等の浸入を確実に防止
できるものである。Therefore, even if there is some deviation in the fixation of the main girder plate and the joint plate to the skin plate in the welding process, the deviation can be surely eliminated by this cutting process, and the segments to be joined at the time of tunnel lining. Thus, a segment that does not produce a gap between the end faces of the skin plate, between the joint plates, and between the main girder plates can be obtained, and by using this segment, infiltration of groundwater or the like can be reliably prevented.
又、継手板に位置決めをするためのノックピン用孔を
穿設するものであるから、セグメントの組立時に互いに
接合した継手板のノックピン用孔間にノックピンを挿嵌
することによって、継手板同士のボルト孔を正確に位置
決めすることができると共に継手板同士に段状のズレを
生じさせることなく精度のよい施工が可能となり、組立
作業の能率化を図ることができる鋼製セグメントが得ら
れる。In addition, since holes for knock pins for positioning are formed in the joint plates, the bolts between the joint plates are inserted by inserting the knock pins between the knock pin holes of the joint plates joined to each other at the time of assembling the segments. The holes can be accurately positioned, and accurate construction can be performed without causing a step-like displacement between the joint plates. As a result, a steel segment that can increase the efficiency of assembly work can be obtained.
第１図乃至第９図は本発明の実施例を示すもので、第１
図はセグメントの分解斜視図、第２図は組立状態の斜視
図、第３図は製造されたセグメントの斜視図、第４図は
主桁板又は継手板の縦断面図、第５図は溶接並びに切削
加工を説明するための断面図、第６図はトンネルに施工
した状態の簡略縦断面図、第７図はセグメント同士の接
合状態を示す要部の拡大断面図、第８図はトンネルに施
工した状態の内側面図、第９図はトンネル長さ方向のセ
グメント同士の接合状態を示す要部の拡大断面図、第10
図は従来の溶接方法を示す断面図、第11図及び第12図は
施工状態を示す要部の断面図である。 （１）……スキンプレート、（２）……主桁板、（３）
……継手板、（４）（５）……ボルト孔、（６）（７）
……ノックピン用孔、（７）（８）……開先部。1 to 9 show an embodiment of the present invention.
The figure is an exploded perspective view of a segment, FIG. 2 is a perspective view of an assembled state, FIG. 3 is a perspective view of a manufactured segment, FIG. 4 is a longitudinal sectional view of a main girder or joint plate, and FIG. 6 is a simplified vertical sectional view of a state where the tunnel is constructed, FIG. 7 is an enlarged sectional view of a main part showing a joining state of segments, and FIG. 8 is a sectional view of the tunnel. FIG. 9 is an enlarged cross-sectional view of a main part showing a joint state between segments in the length direction of the tunnel, FIG.
FIG. 1 is a cross-sectional view showing a conventional welding method, and FIG. 11 and FIG. (1) ... skin plate, (2) ... main girder plate, (3)
... Joint plate, (4) (5) ... Bolt holes, (6) (7)
... Knock pin holes, (7) and (8).
Claims (1)
大きく形成されている弧状に彎曲したスキンプレートの
凹弧面の両側端縁上に、厚さが仕上がり設計寸法よりも
厚く形成され且つ下端に外面から内面に向かって開先部
を全長に亘って設けている彎曲主桁板の下端面を当接す
ると共に上記スキンプレートの前後直線端縁上に、厚さ
及び長さが仕上がり設計寸法よりも大きく形成され且つ
下端に外面から内面に向かって開先部を全長に亘って設
けている継手板の下端面を当接させ、この状態で上記開
先部に外側から仕上がり設計寸法よりも内側に至るまで
の溶接を行ってスキンプレートの四方端縁上に彎曲主桁
板と継手板とを一体的に固着し、しかるのち、スキンプ
レートの幅及び長さが設計寸法となるように且つスキン
プレートと主桁板及び継手板との夫々の接合角度が設計
角度となるようにスキンプレートの端面から主桁板及び
継手板の外面全面を面一に切削し、さらに、継手板に位
置決めをするためのノックピン用孔を穿設することを特
徴とする鋼製セグメントの製造方法。1. An arc-shaped curved skin plate having a width and a length slightly larger than a finished design dimension. In addition, the lower end surface of the curved main girder plate having a groove portion extending from the outer surface to the inner surface over the entire length at the lower end is abutted, and the thickness and length are finished on the front and rear linear edges of the skin plate. The lower end surface of a joint plate formed larger than the size and having a groove at the lower end extending from the outer surface to the inner surface over the entire length is brought into contact with the joint plate. Also, the curved main girder plate and the joint plate are integrally fixed on the four edges of the skin plate by welding up to the inside, so that the width and length of the skin plate become the design dimensions. And skin plate and main girder plate Knock pin holes for cutting the entire outer surfaces of the main girder plate and the joint plate from the end surface of the skin plate so that the respective joint angles with the joint plate and the joint plate become the design angles, and further positioning the joint plate. A method for producing a steel segment, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63039181A JP2651587B2 (en) | 1988-02-22 | 1988-02-22 | Method of manufacturing steel segments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63039181A JP2651587B2 (en) | 1988-02-22 | 1988-02-22 | Method of manufacturing steel segments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01214697A JPH01214697A (en) | 1989-08-29 |
| JP2651587B2 true JP2651587B2 (en) | 1997-09-10 |
Family
ID=12545944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63039181A Expired - Lifetime JP2651587B2 (en) | 1988-02-22 | 1988-02-22 | Method of manufacturing steel segments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2651587B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH046250U (en) * | 1990-04-28 | 1992-01-21 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125289A (en) * | 1982-12-29 | 1984-07-19 | Ishikawajima Constr Material Co Ltd | Surface finishing method of steel segment |
-
1988
- 1988-02-22 JP JP63039181A patent/JP2651587B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01214697A (en) | 1989-08-29 |
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