JP2019007187A - Welded structure, welding method, tank construction method, and tank - Google Patents

Welded structure, welding method, tank construction method, and tank Download PDF

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JP2019007187A
JP2019007187A JP2017122096A JP2017122096A JP2019007187A JP 2019007187 A JP2019007187 A JP 2019007187A JP 2017122096 A JP2017122096 A JP 2017122096A JP 2017122096 A JP2017122096 A JP 2017122096A JP 2019007187 A JP2019007187 A JP 2019007187A
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plate
fixed
welding
connection
connecting member
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JP6914113B2 (en
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直輝 前城
Naoki Maeshiro
直輝 前城
慎吾 味沢
Shingo Ajisawa
慎吾 味沢
道紀 本田
Michinori Honda
道紀 本田
明伸 恒川
Akinobu Tsunekawa
明伸 恒川
隆夫 亀井
Takao Kamei
隆夫 亀井
績 荻原
Isao Ogiwara
績 荻原
茂 大谷
Shigeru Otani
茂 大谷
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Hazama Ando Corp
Tokyo Electric Power Co Holdings Inc
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Hazama Ando Corp
Tokyo Electric Power Co Holdings Inc
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Abstract

To develop a technology capable of improving the degree of freedom in design of a groove secured between plate materials (first plate material and second plate material), and capable of keeping a relative position stable between plate materials even after completion of welding.SOLUTION: In a welded structure 1 which is provided, at a first plate material 11, a first connection member 12 having a tip part 12d protruding from an edge part is fixed, a second connection member 22 fixed to a second plate material 21 abutted and welded to the first plate material 11 is abutted and fixed to the first connection member 12, and on the rear surface side of a welded part 3 of the first and second plate materials 11 and 21, the tip part 12d of the first connection member 12 is located. A welding method which can construct the welded structure 1 and a tank construction method, and a tank having the welded structure 1 are also provided.SELECTED DRAWING: Figure 4

Description

本発明は、板材同士を突き合わせ溶接によって互いに固定した溶接構造、板材同士を突き合わせ溶接する溶接方法、この溶接方法を利用するタンク構築方法、タンクに関する。   The present invention relates to a welding structure in which plate members are fixed to each other by butt welding, a welding method in which plate members are butt-welded, a tank construction method using this welding method, and a tank.

例えば、特許文献１に開示される鋼製タンクは、湾曲した方形鋼板を多数立設し隣接する方形鋼板の左右端部同士を溶接接合して円形に組み立てた側板（周壁）を有する。また、特許文献１は、方形鋼板の左右端部の側板外周側に仮止部材が設けられた縦パネルを用い、互いに隣り合う縦パネルの方形鋼材の端部同士を突き合わせ仮止部材同士をボルトナット等の連結具で連結した状態で、方形鋼材同士の突き合わせ部分を溶接する鋼製タンクの構築方法も開示する。   For example, the steel tank disclosed in Patent Document 1 has side plates (peripheral walls) that are assembled in a circular shape by welding a large number of curved rectangular steel plates and welding the left and right ends of adjacent rectangular steel plates. Further, Patent Document 1 uses a vertical panel in which a temporary fixing member is provided on the outer peripheral side of the side plate of the right and left ends of a rectangular steel plate, but the ends of rectangular steel materials of adjacent vertical panels are abutted with each other and the temporary fixing members are bolted together. Also disclosed is a method for constructing a steel tank in which the butted portions of rectangular steel materials are welded in a state where they are connected by a connecting tool such as a nut.

特開２００２−１７９１８５号公報JP 2002-179185 A

特許文献１記載の技術において、仮止部材同士がボルトナット等の連結具で連結され互いに突き合わせ状態とされた方形鋼材間には、突き合わせ状態の維持のため連結具からの突き合わせ力を作用させるものと考えられる。このため、特許文献１記載の技術では、溶接時の方形鋼材の溶け込み進行によって、連結具による係止部材間の連結、隣り合う縦パネル間の連結、が緩み、その結果、側板（周壁）の歪み等を招く可能性がある。
また、特許文献１記載の技術のように、仮止部材同士をボルトナット等の連結具で連結し、互いに隣り合う縦パネルの方形鋼材の端部同士を突き合わせる構成では、方形鋼材間の溶接開先にルート間隔を確保する場合には適用できず、開先形状の制約が大きい。 In the technique described in Patent Document 1, a butt force from the coupler is applied between the square steel members in which the temporary fixing members are coupled to each other by a coupling tool such as a bolt and nut to be in a butted state. it is conceivable that. For this reason, in the technique described in Patent Document 1, due to the progress of the penetration of the rectangular steel material during welding, the connection between the locking members by the connection tool and the connection between the adjacent vertical panels are loosened. As a result, the side plate (peripheral wall) There is a possibility of causing distortion or the like.
In addition, as in the technique described in Patent Document 1, in the configuration in which the temporary fixing members are connected to each other with a connector such as a bolt and nut and the ends of the rectangular steel materials of the adjacent vertical panels are abutted with each other, welding between the rectangular steel materials is performed. This is not applicable when securing a route interval in a groove, and there is a great restriction on the groove shape.

本発明が解決しようとする課題は、板材間（第一板材と第二板材との間）に確保する開先の設計自由度を向上でき、しかも、溶接完了後も板材間の相対位置を安定に保つことができ、施工品質の向上と施工時間の短縮が可能な溶接構造、溶接方法、タンク構築方法、タンクを提供することである。   The problem to be solved by the present invention is to improve the design freedom of the groove secured between the plate materials (between the first plate material and the second plate material) and to stabilize the relative position between the plate materials even after the completion of welding. It is possible to provide a welded structure, a welding method, a tank construction method, and a tank that can be maintained at the same time and can improve the construction quality and shorten the construction time.

上記課題を解決するために、本発明では以下の態様を提供する。
第一の態様の溶接構造は、第一接続部材が縁部に沿って延び、基端部で固定されているとともに先端部が前記縁部から突出する第一板材と、第二接続部材が前記第一板材に隣接配置された縁部に沿って前記縁部から後退した位置に固定され、前記第二接続部材から前記第一部材側に突出する突出端部を有する第二板材とを備え、前記第一接続部材と前記第二接続部材とが突き当て固定され、前記第一接続部材の先端部に前記第二板材の突出端部が重ね合わされ、前記第一板材と前記第二板材との間に溶接部が形成されている。
前記第一接続部材は、基端部で前記第一板材の裏面に固定されているとともに先端部が前記第一板材の前記縁部から突出する固定板部と、固定板部の裏面側に突出する接続用突部とを有し、前記第一接続部材と第二接続部材との間は前記第一接続部材の前記接続用突部と前記第二接続部材との固定によって互いに固定されていても良い。
前記第一接続部材の前記接続用突部と前記第二接続部材とはボルトを有する締結装置によって締結固定されていても良い。
前記第二板材には、前記第一板材に隣接配置された縁部に沿って、一又は複数の前記第２接続部材が固定されていても良い。
第二の態様は、板材同士を溶接するための溶接方法であって、第一接続部材が溶接部となる縁部に沿って延び、基端部で固定されているとともに先端部が前記縁部から突出する第一板材を設置する第一板材設置工程と、第二接続部材が前記第一板材との溶接部となる縁部に沿って前記縁部から後退した位置に固定され、前記第二接続部材から前記第一部材側に突出する突出端部を有する第二板材を、前記第一接続部材の先端部に前記第二板材の突出端部を重ね合わせ、かつ前記第一板材の第一接続部材に前記第二接続部材を突き当てるようにして設置し、前記第一板材と前記第二板材との間に溶接開先を確保する第二板材設置工程と、第一接続部材と第二接続部材とを固定する接続部材固定工程と、前記接続部材同士が固定された状態で、前記溶接開先に対して溶接を行う溶接工程とを備える。
前記第一接続部材は、基端部で前記第一板材の裏面に固定されているとともに先端部が前記第一板材の前記縁部から突出する固定板部と、固定板部の裏面側に突出する接続用突部とを有し、前記第二板材設置工程では、前記第二接続部材を前記第一接続部材の前記接続用突部に突き当てるようにして第二板材を設置し、前記接続部材固定工程では、前記第一接続部材の前記接続用突部と前記第二接続部材とを固定することで前記第一接続部材と前記第二接続部材とを固定しても良い。
前記接続部材固定工程では、前記第一接続部材の前記接続用突部と前記第二接続部材とをボルトを有する締結装置によって締結固定しても良い。
前記第二板材には、前記第一板材に隣接配置された縁部に沿って、一又は複数の前記第２接続部材が固定されていても良い。
第三の態様は、上記の溶接方法によってタンクを構築するタンク構築方法であって、一側部に前記第一接続部材、一側部とは反対の他側部に前記第二接続部材がそれぞれ固定された板材を用い、先行する板材を第一板材、次に設置する板材を第二板材として、順次、前記第一板材設置工程、前記第二板材設置工程及び前記接続部材固定工程を実施し、周壁を構成する板材を環状に仮組する仮組工程と、前記仮組工程で仮組された板材同士を溶接する溶接工程とを備える。
第四の態様は、上記の溶接構造を有するタンクであって、一側部に前記第一接続部材、一側部とは反対の他側部に前記第二接続部材がそれぞれ固定された板材が複数環状に配置された周壁を有し、互いに隣り合う板材が前記溶接構造によって互いに固定されている。 In order to solve the above problems, the present invention provides the following aspects.
In the welded structure of the first aspect, the first connecting member extends along the edge, is fixed at the proximal end, and the distal end protrudes from the edge. A second plate having a protruding end that is fixed to a position retracted from the edge along the edge disposed adjacent to the first plate, and protrudes from the second connection member toward the first member; The first connection member and the second connection member are abutted and fixed, and the protruding end portion of the second plate member is overlapped with the tip portion of the first connection member, and the first plate member and the second plate member A weld is formed between them.
The first connecting member is fixed to the back surface of the first plate member at the base end portion, and a distal end portion protrudes from the edge portion of the first plate member, and protrudes to the back surface side of the fixed plate portion. And the first connecting member and the second connecting member are fixed to each other by fixing the connecting protruding portion of the first connecting member and the second connecting member. Also good.
The connecting projection of the first connecting member and the second connecting member may be fastened and fixed by a fastening device having a bolt.
One or a plurality of the second connection members may be fixed to the second plate member along an edge portion disposed adjacent to the first plate material.
A second aspect is a welding method for welding plate members together, wherein the first connecting member extends along an edge portion serving as a welded portion, is fixed at a proximal end portion, and a distal end portion is the edge portion. A first plate member installation step of installing a first plate member protruding from the second plate member, and a second connecting member fixed at a position retracted from the edge portion along an edge portion to be a welded portion with the first plate member; A second plate having a protruding end protruding from the connecting member toward the first member, a protruding end of the second plate overlapping the tip of the first connecting member, and a first of the first plate A second plate member installation step for placing the second connection member against the connection member and securing a welding groove between the first plate member and the second plate member; A connecting member fixing step for fixing the connecting member, and in a state where the connecting members are fixed, And a welding step of performing welded to welding GMA.
The first connecting member is fixed to the back surface of the first plate member at the base end portion, and a distal end portion protrudes from the edge portion of the first plate member, and protrudes to the back surface side of the fixed plate portion. And in the second plate material installation step, the second plate material is installed so that the second connection member abuts against the connection projection of the first connection member, and the connection In the member fixing step, the first connecting member and the second connecting member may be fixed by fixing the connecting protrusion of the first connecting member and the second connecting member.
In the connection member fixing step, the connection protrusion of the first connection member and the second connection member may be fastened and fixed by a fastening device having a bolt.
One or a plurality of the second connection members may be fixed to the second plate member along an edge portion disposed adjacent to the first plate material.
A third aspect is a tank construction method for constructing a tank by the above welding method, wherein the first connection member is provided on one side, and the second connection member is provided on the other side opposite to the one side. Using the fixed plate material, the preceding plate material is the first plate material, the next plate material to be installed is the second plate material, and the first plate material installation step, the second plate material installation step, and the connection member fixing step are sequentially performed. And a temporary assembly step in which the plate members constituting the peripheral wall are temporarily assembled annularly, and a welding step of welding the plate members temporarily assembled in the temporary assembly step.
A fourth aspect is a tank having the above welded structure, wherein the first connecting member is fixed to one side, and the second connecting member is fixed to the other side opposite to the one side. A plurality of peripheral walls arranged in an annular shape, and adjacent plate members are fixed to each other by the welding structure.

本発明によれば、接続部材同士（第一接続部材及び第二接続部材）の突き合わせにより、板材間（第一板材と第二板材との間）に所望の離隔距離を確保して板材同士を連結することができる。その結果、板材間（第一板材と第二板材との間）に確保する開先の設計自由度を向上できる。
また、本発明によれば、互いに突き合わせた接続部材同士（第一接続部材及び第二接続部材）の固定（連結）により板材同士を連結することで、板材同士を互いに突き合わせることなく、板材間に所望の離隔距離を保ったまま溶接することを容易に実現できる。本発明によれば、互いに突き合わせた接続部材同士を固定（連結）するだけで、簡単かつ短時間（施工時間の短縮）で板材同士を所望の離隔距離を確保した状態に連結できる。しかも、本発明では、互いに突き合わせた接続部材同士の固定によって、板材間に所望の離隔距離を精度良く確保でき、接続部材同士の固定は板材の相対位置を安定維持できるため、板材同士を精度良く溶接でき、施工品質を向上できる。 According to the present invention, by connecting the connecting members (first connecting member and second connecting member), a desired separation distance is secured between the plate members (between the first plate member and the second plate member). Can be linked. As a result, it is possible to improve the design freedom of the groove secured between the plate materials (between the first plate material and the second plate material).
Further, according to the present invention, the plate members are connected to each other by fixing (connecting) the connection members (the first connection member and the second connection member) that are abutted to each other, so that the plate materials are not abutted to each other. In addition, it is possible to easily perform welding while maintaining a desired separation distance. According to the present invention, the plate members can be connected to each other in a state in which a desired separation distance is ensured simply and in a short time (reduction of construction time) by simply fixing (connecting) the connecting members that are butted together. In addition, in the present invention, by fixing the connecting members that face each other, a desired separation distance can be accurately secured between the plate members, and the fixing of the connecting members can stably maintain the relative position of the plate members. It can be welded and construction quality can be improved.

本発明の１実施形態に係るタンクを示す図であって、（ａ）は天蓋を透視して示した平面図、（ｂ）は正面図である。It is a figure which shows the tank which concerns on one Embodiment of this invention, Comprising: (a) is the top view which showed the canopy seeing through, (b) is a front view. 本発明の１実施形態に係る溶接構造及び溶接方法に用いられる第一板材（第一接続部材が固定された第一板材）及び第二板材（第二接続部材が固定された第二板材）の構造を示す図である。The first plate material (first plate member to which the first connecting member is fixed) and the second plate material (second plate member to which the second connection member is fixed) used in the welding structure and welding method according to one embodiment of the present invention. It is a figure which shows a structure. 図２の第一、第二板材の第一、第二接続部材を互いに連結固定して組み立てた連結部を示す図である。It is a figure which shows the connection part assembled by connecting and fixing the 1st and 2nd connection members of the 1st and 2nd board | plate material of FIG. 2 mutually. 図３の連結部の第一、第二板材を溶接して溶接部を形成した状態を示す図である。It is a figure which shows the state which welded the 1st, 2nd board | plate material of the connection part of FIG. 3, and formed the welding part. 図１のタンクの構築に用いられる縦パネルを示す図であって、（ａ）は支保用バーを用いて支持した状態の縦パネルを示す側面図、（ｂ）は縦パネルのその湾曲内周側から見た構成を示す図である。It is a figure which shows the vertical panel used for construction | assembly of the tank of FIG. 1, Comprising: (a) is a side view which shows the vertical panel of the state supported using the support bar, (b) is the curved inner periphery of the vertical panel It is a figure which shows the structure seen from the side. 図１のタンクの構築（タンク構築方法）において、図５（ａ）、（ｂ）の縦パネルを支保用バーを用いて支持した状態を示す斜視図である。FIG. 6 is a perspective view showing a state in which the vertical panel of FIGS. 5A and 5B is supported using a support bar in the construction of the tank of FIG. 1 (tank construction method). 第二板材の第二接続部材の変形例を示す図である。It is a figure which shows the modification of the 2nd connection member of a 2nd board | plate material. 第一板材の第一接続部材の変形例を示す図である。It is a figure which shows the modification of the 1st connection member of a 1st board | plate material.

以下、本発明に係る実施形態について、図面を参照して説明する。   Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

図１（ａ）、（ｂ）は本発明に係る実施形態のタンク５０を示す。
タンク５０は、地山上面等の施工面Ｓ上に立設した３以上（図１では１６枚）の板材５１を円形状に溶接接合して形成された周壁５２と、周壁５２の下側に設けられた底壁５３と、周壁５２上を覆う天蓋５４とを有する。 1A and 1B show a tank 50 according to an embodiment of the present invention.
The tank 50 includes a peripheral wall 52 formed by welding three or more (16 in FIG. 1) plate members 51 erected on a construction surface S such as an upper surface of a natural ground in a circular shape, and a lower side of the peripheral wall 52. It has a provided bottom wall 53 and a canopy 54 that covers the peripheral wall 52.

タンク５０は、周壁５２を構成する板材５１同士の溶接接合に、本発明に係る実施形態の溶接構造１、溶接方法、タンク構築方法を適用して構築したものである。
図２、図３は、板材５１同士を溶接接合する溶接方法を説明する図、図４は溶接構造１を示す図である。
図２〜図４においては、互いに溶接する板材５１の一方に符号１１、他方に符号２１を付記した。また、図１（ａ）、（ｂ）において、板材５１は円形状の周壁５２をその周方向に分割した湾曲板であるが、図２〜図４においては、板材１１、２１の互いに溶接される端部を平板状に簡略化して図示している。 The tank 50 is constructed by applying the welding structure 1, the welding method, and the tank construction method of the embodiment according to the present invention to the welding joint between the plate members 51 constituting the peripheral wall 52.
2 and 3 are diagrams for explaining a welding method in which the plate members 51 are welded together, and FIG. 4 is a diagram showing the welded structure 1.
2 to 4, reference numeral 11 is added to one of the plate members 51 to be welded to each other, and reference numeral 21 is added to the other. 1 (a) and 1 (b), the plate member 51 is a curved plate obtained by dividing a circular peripheral wall 52 in the circumferential direction. In FIGS. 2 to 4, the plate members 11 and 21 are welded to each other. The end portions are simplified in a flat plate shape.

図２は板材１１、２１（第一板材１１及び第二板材２１）の溶接前の状態を示す図、図３は接続部材１２、２２（第一接続部材１２及び第二接続部材２２）同士の連結固定によって互いに連結固定した板材１１、１２間に溶接開先２を確保した状態（連結完了状態）を示す図である。
また、図４は、図３の状態から板材１１、１２同士を突き合わせ溶接して溶接構造１を構成した状態を示す。 FIG. 2 is a view showing a state before welding of the plate members 11 and 21 (the first plate member 11 and the second plate member 21), and FIG. 3 is a view of the connection members 12 and 22 (the first connection member 12 and the second connection member 22). It is a figure which shows the state (connection completion state) which ensured the welding groove | channel 2 between the board | plate materials 11 and 12 which were mutually fixed by connection fixation.
Moreover, FIG. 4 shows the state which comprised the board | plate materials 11 and 12 butt-welded from the state of FIG.

図２〜図４に示すように、ここで説明する実施形態の溶接構造１（図４参照）は、第一接続部材１２が固定された第一板材１１と、第二接続部材２２が固定された第二板材２１とを用いて構成されている。
第一板材１１及び第二板材２１は例えば鋼板等の金属製板材である。
第一板材１１と第二板材２１とは、互いに接近させた縁部同士の突き合わせ溶接によって接合されている。第一板材１１と第二板材２１とはそれぞれの縁部間に形成された溶接部３を介して互いに接合されている。
図４に示す溶接構造１は、第一接続部材１２と第二接続部材２２とを締結固定（すなわち機械的固定）する、ボルトナット等の締結具３１も有している。 As shown in FIGS. 2 to 4, in the welding structure 1 (see FIG. 4) of the embodiment described here, the first plate member 11 to which the first connection member 12 is fixed and the second connection member 22 are fixed. The second plate material 21 is used.
The 1st board | plate material 11 and the 2nd board | plate material 21 are metal board | plate materials, such as a steel plate, for example.
The 1st board | plate material 11 and the 2nd board | plate material 21 are joined by the butt welding of the edge parts made to mutually approach. The 1st board | plate material 11 and the 2nd board | plate material 21 are mutually joined via the welding part 3 formed between each edge part.
The welding structure 1 shown in FIG. 4 also has a fastener 31 such as a bolt and nut that fastens and fixes (that is, mechanically fixes) the first connecting member 12 and the second connecting member 22.

図４の溶接構造１において、溶接部３は、第一板材１１と第二板材２１との間に図３に示す溶接開先２に沿う概略断面テーパ状に形成されている。
図３に示す溶接開先２は、端面同士を互いに接近配置した第一板材１１及び第二板材２１の一面側から一面側とは反対の他面側に向かって次第に溝幅が狭くなる断面テーパ状の主溝部２ａを有する。溶接開先２について、主溝部２ａの溝幅が大きい側の開口を、以下、開先開口部、とも言う。以下、第一板材１１及び第二板材２１について、開先開口部が位置する側（一面側）の面をおもて面、おもて面とは反対の側（他面側）の面を裏面とも言う。
また、図３に示す連結完了状態の第一、第二板材１１、１２及び第一、第二接続部材１２、２２を含む連結部４、図４の溶接構造１について、以下、第一板材１１及び第二板材２１のおもて面側をおもて面側、第一板材１１及び第二板材２１の裏面側を裏面側、として説明する。 In the welded structure 1 in FIG. 4, the welded portion 3 is formed between the first plate member 11 and the second plate member 21 so as to have a substantially sectional taper shape along the weld groove 2 shown in FIG. 3.
The weld groove 2 shown in FIG. 3 has a cross-sectional taper in which the groove width gradually decreases from one surface side of the first plate member 11 and the second plate member 21 whose end surfaces are arranged close to each other toward the other surface side opposite to the one surface side. The main groove portion 2a has a shape. Regarding the welding groove 2, the opening on the side where the groove width of the main groove 2a is large is also referred to as a groove opening hereinafter. Hereinafter, for the first plate member 11 and the second plate member 21, the surface on the side where the groove opening is located (one surface side) is the front surface, and the surface opposite to the front surface (the other surface side) is the surface. Also called the back side.
Moreover, about the connection part 4 containing the 1st, 2nd board | plate materials 11 and 12 and the 1st and 2nd connection members 12 and 22 of the connection completion state shown in FIG. 3, and the welding structure 1 of FIG. The front surface side of the second plate material 21 will be described as the front surface side, and the back surfaces of the first plate material 11 and the second plate material 21 will be described as the back surface side.

図１（ａ）、（ｂ）に示すタンク５０において、第一、第二接続部材１２、２２は周壁５２の内側に位置する。すなわち、タンク５０において、溶接構造１のおもて面側は周壁５２外周側、溶接構造１の裏面側は周壁５２内周側、である。   In the tank 50 shown in FIGS. 1A and 1B, the first and second connecting members 12 and 22 are located inside the peripheral wall 52. That is, in the tank 50, the front surface side of the welding structure 1 is the outer peripheral side of the peripheral wall 52, and the back surface side of the welding structure 1 is the inner peripheral side of the peripheral wall 52.

タンク５０の周壁５２（以下、タンク周壁、とも言う）を構成する板材５１について、以下、タンク周壁５２の軸線方向に一致する方向を縦方向、タンク周壁５２周方向を左右方向とも言う。
図１（ｂ）、図５（ｂ）に示すように、第一接続部材１２は板材５１の左右方向両端部の一方に縦方向に沿って設けられている。第二接続部材２２は板材５１の左右方向両端部の他方に縦方向に沿って設けられている。 Regarding the plate material 51 constituting the peripheral wall 52 (hereinafter also referred to as a tank peripheral wall) of the tank 50, hereinafter, the direction coinciding with the axial direction of the tank peripheral wall 52 is also referred to as the vertical direction, and the circumferential direction of the tank peripheral wall 52 is also referred to as the left-right direction.
As shown in FIGS. 1B and 5B, the first connection member 12 is provided along the vertical direction at one of the left and right ends of the plate material 51. The second connection member 22 is provided along the vertical direction on the other of the left and right ends of the plate member 51.

図４の第一接続部材１２及び第二接続部材２２は具体的にはアングル材である。
第一接続部材１２は、第一板材１１の裏面に固定された固定板部１２ａと、固定板部１２ａからその裏面側（第一板部１１とは反対の側）に突出するリブ状の接続用板部１２ｂ（接続用突部）とを有する。
固定板部１２ａ（以下、第一部材固定板部、とも言う）は、第一板材１１の裏面に重ね合わせて第一板材１１に溶接等により固定された基端部１２ｃと、第一板材１１の溶接部３側の縁部から左右方向に突出する先端部１２ｄとを有する。
接続用板部１２ｂ（以下、第一部材接続用板部、とも言う）は、第一部材固定板部１２ａの第一板材１１から突出する先端部１２ｄの突端から第一部材固定板部１２ａに垂直に突出されている。 Specifically, the first connecting member 12 and the second connecting member 22 in FIG. 4 are angle members.
The first connecting member 12 includes a fixed plate portion 12a fixed to the back surface of the first plate member 11, and a rib-shaped connection protruding from the fixed plate portion 12a to the back surface side (the side opposite to the first plate portion 11). And a plate 12b for connection (projection for connection).
The fixed plate portion 12a (hereinafter also referred to as a first member fixed plate portion) includes a base end portion 12c that is superposed on the back surface of the first plate member 11 and fixed to the first plate member 11 by welding or the like, and the first plate member 11. And a tip portion 12d protruding in the left-right direction from the edge portion on the welded portion 3 side.
The connecting plate portion 12b (hereinafter also referred to as the first member connecting plate portion) is formed from the protruding end of the tip portion 12d protruding from the first plate member 11 of the first member fixing plate portion 12a to the first member fixing plate portion 12a. It protrudes vertically.

第二接続部材２２は、第二板材２１の裏面に固定された固定板部２２ａと、固定板部２２ａからその裏面側（第二板部２１とは反対の側）に突出するリブ状の接続用板部２２ｂ（接続用突部）とを有する。
固定板部２２ａ（以下、第二部材固定板部、とも言う）は、その全体を第二板材２１の裏面に重ね合わせて第二板材２１に溶接等により固定されている。また、第二部材固定板部２２ａは、第二板材２１の溶接部３側の縁部から若干離隔させて第二板材２１に固定されている。第二板材２１には、第二接続部材２２から溶接部３側（第一板材１１側）に突出する突出端部２１ａが確保されている。
接続用板部２２ｂ（以下、第二部材接続用板部、とも言う）は、第二部材固定板部２２ａの溶接部３側の先端から第二部材固定板部２２ａに垂直に突出されている。 The second connecting member 22 has a fixed plate portion 22a fixed to the back surface of the second plate material 21, and a rib-shaped connection protruding from the fixed plate portion 22a to the back surface side (the side opposite to the second plate portion 21). And a plate portion 22b (connection projection).
The fixed plate portion 22a (hereinafter, also referred to as a second member fixed plate portion) is fixed to the second plate material 21 by welding or the like with the whole being overlapped on the back surface of the second plate material 21. Further, the second member fixing plate portion 22 a is fixed to the second plate material 21 with a slight separation from the edge of the second plate material 21 on the welded portion 3 side. The second plate member 21 has a protruding end portion 21 a that protrudes from the second connection member 22 to the welded portion 3 side (first plate member 11 side).
The connecting plate portion 22b (hereinafter also referred to as a second member connecting plate portion) protrudes perpendicularly from the tip of the second member fixing plate portion 22a on the welded portion 3 side to the second member fixing plate portion 22a. .

第一接続部材１２について、第一部材固定板部１２ａの先端部１２ｄの突端側を、以下、先端側、として扱う。
また、第二接続部材２２について、固定板部２２ａの溶接部３側を、以下、先端側、として扱う。
図４の溶接構造１において、第一接続部材１２及び第二接続部材２２は、それぞれの先端側の接続用板部１２ｂ、２２ｂ同士を重ね合せて互いに突き合わされている。第一接続部材１２及び第二接続部材２２の接続用板部１２ｂ、２２ｂは互いに重ね合わされる当接面１２ｆ、２２ｆを形成している。 Regarding the first connecting member 12, the protruding end side of the distal end portion 12 d of the first member fixing plate portion 12 a is hereinafter treated as the distal end side.
Moreover, about the 2nd connection member 22, the welding part 3 side of the fixed board part 22a is handled as a front end side hereafter.
In the welding structure 1 of FIG. 4, the first connecting member 12 and the second connecting member 22 are abutted against each other with the connecting plate portions 12 b and 22 b on the front end side being overlapped with each other. The connection plate portions 12b and 22b of the first connection member 12 and the second connection member 22 form contact surfaces 12f and 22f that are overlapped with each other.

図４の締結具３１は、具体的にはボルトナット（ボルト３２及びナット３３）である。
第一接続部材１２及び第二接続部材２２の接続用板部１２ｂ、２２ｂには、締結具３１のボルト３２のねじ軸部３２ａを通すためのボルト孔１２ｈ、２２ｈがそれぞれの板厚を貫通させて形成されている。 The fastener 31 of FIG. 4 is specifically a bolt nut (bolt 32 and nut 33).
Bolt holes 12h and 22h for passing the screw shaft portions 32a of the bolts 32 of the fasteners 31 pass through the respective plate thicknesses in the connection plate portions 12b and 22b of the first connection member 12 and the second connection member 22. Is formed.

第一、第二接続部材１２、２２の固定板部及び接続用板部（接続用突部）は、それぞれ第一、第二接続部材１２、２２の延在方向（縦方向）全長にわたって延在している。図５（ｂ）、図６に示すように、ボルト孔１２ｈ、２２ｈは、板材の縦方向に延びる第一、第二接続部材１２、２２の延在方向（縦方向）複数箇所に形成されている。   The fixed plate portion and the connecting plate portion (connecting protrusion) of the first and second connecting members 12 and 22 extend over the entire length in the extending direction (vertical direction) of the first and second connecting members 12 and 22, respectively. doing. As shown in FIGS. 5B and 6, the bolt holes 12 h and 22 h are formed at a plurality of locations in the extending direction (vertical direction) of the first and second connecting members 12 and 22 extending in the vertical direction of the plate material. Yes.

図４の溶接構造１において、締結具３１は、第一接続部材１２及び第二接続部材２２の接続用板部１２ｂ、２２ｂのボルト孔２１ｈ、２２ｈにボルト３２のねじ軸部３２ａを刺し通し、ねじ軸３２ａの先端部に螺着したナット３３とボルト３２の頭部３２ｂとの間に接続用板部１２ｂ、２２ｂを締め付けて、第一接続部材１２と第二接続部材２２とを締結固定している。   In the welded structure 1 of FIG. 4, the fastener 31 pierces the screw shaft portion 32a of the bolt 32 in the bolt holes 21h, 22h of the connection plate portions 12b, 22b of the first connection member 12 and the second connection member 22, The connection plate portions 12b and 22b are tightened between the nut 33 screwed to the tip of the screw shaft 32a and the head portion 32b of the bolt 32, and the first connection member 12 and the second connection member 22 are fastened and fixed. ing.

図４の溶接構造１において、第二板材２１の突出端部２１ａ（以下、第二板材突出端部、とも言う）は、第一部材固定板部１２ａの先端部１２ｄのおもて面に重ね合わされている。
溶接部３は第一部材固定板部１２ａの先端部１２ｄのおもて面側に位置する。
第一部材固定板部１２ａの先端部１２ｄは、第二板材突出端部２１ａの裏面に当接させて第一板材１１と第二板材２１との間の溶接部３の裏面側に配置されている。 In the welded structure 1 of FIG. 4, the protruding end portion 21a of the second plate member 21 (hereinafter also referred to as the second plate member protruding end portion) is superimposed on the front surface of the front end portion 12d of the first member fixing plate portion 12a. Has been.
The welded portion 3 is located on the front surface side of the distal end portion 12d of the first member fixing plate portion 12a.
The front end portion 12d of the first member fixing plate portion 12a is disposed on the back surface side of the welded portion 3 between the first plate material 11 and the second plate material 21 in contact with the back surface of the second plate material protruding end portion 21a. Yes.

なお、図４の溶接構造１の構成は、溶接部３が形成されていること以外は、図３の連結部４と同様である。
連結部４は、溶接部３が形成されていない点だけが図４の溶接構造１と異なり、溶接部３以外の構成は図４の溶接構造１と同様である。
図３の連結部４は、第一、第二板材１１、１２の端部と、第一、第二接続部材１２、２２と、締結具３１とで構成されている。 The configuration of the welded structure 1 in FIG. 4 is the same as that of the connecting portion 4 in FIG. 3 except that the welded portion 3 is formed.
The connection part 4 is different from the welded structure 1 in FIG. 4 only in that the welded part 3 is not formed, and the configuration other than the welded part 3 is the same as the welded structure 1 in FIG.
The connecting portion 4 in FIG. 3 includes end portions of the first and second plate members 11 and 12, first and second connecting members 12 and 22, and a fastener 31.

次に、図１（ａ）、（ｂ）のタンク５０を構築する方法（タンク構築方法）の一例を説明する。
ここで説明するタンク構築方法は、図３に示す連結部４を組み立てた状態で第一板材１１と第二板材２１とを溶接接合し、図４に示す溶接構造１を構築する溶接方法を適用するものである。 Next, an example of a method for constructing the tank 50 shown in FIGS. 1A and 1B (tank construction method) will be described.
The tank construction method described here is a welding method in which the first plate member 11 and the second plate member 21 are welded and joined in a state where the connecting portion 4 shown in FIG. 3 is assembled, and the welded structure 1 shown in FIG. 4 is constructed. To do.

図５（ａ）、（ｂ）に示すように、ここで説明するタンク構築方法では、板材５１に第一、第二接続部材１２、２２及びアニュラープレート５５を固定した構造の縦パネル５６を用いる。
第一接続部材１２は、板材５１（第一板材１１）の左右方向一端（縁部）から突出する先端部１２ｄを確保して板材５１の左右方向一端側の端部（一側部）に固定されている。
第二接続部材２２は、板材５１（第二板材２１）の左右方向他端（縁部）から一端側へ若干後退（離隔）させて板材５１の左右方向一端側とは反対側の端部（他側部）に固定されている。第二接続部材２２を板材５１の左右方向他端から若干後退させて固定した固定したことにより、板材５１には、左右方向において第二接続部材２２から突出する突出端部２１ａが確保されている。 As shown in FIGS. 5A and 5B, in the tank construction method described here, a vertical panel 56 having a structure in which the first and second connecting members 12 and 22 and the annular plate 55 are fixed to the plate material 51 is used. .
The first connecting member 12 secures a front end portion 12 d protruding from one end (edge) in the left-right direction of the plate material 51 (first plate material 11) and is fixed to the end portion (one side portion) on one end side in the left-right direction of the plate material 51. Has been.
The second connecting member 22 is slightly retracted (separated) from the other end (edge) in the left-right direction of the plate material 51 (second plate material 21) to one end side, and the end portion on the opposite side to the one end side in the left-right direction of the plate material 51 ( It is fixed to the other side. By fixing the second connecting member 22 so as to be slightly retracted and fixed from the other end in the left-right direction of the plate member 51, the protruding end portion 21a protruding from the second connecting member 22 in the left-right direction is secured on the plate member 51. .

アニュラープレート５５は、板材５１の縦方向片端に溶接等によって板材５１に垂直に固定されている。アニュラープレート５５は、板材５１の縦方向片端から板材５１の湾曲内周側に張り出された部分を有する。
図１（ａ）、図５（ａ）に示すように、アニュラープレート５５（詳細には板材５１の湾曲内周側に張り出された部分）は、タンク５０の底壁５３の一部を構成する。
図１（ａ）に示すように、底壁５３は、タンク周壁５２に沿って複数環状配置されたアニュラープレート５５と、その内側に設けられた複数の底板５７とを有し、これらを溶接接合によって一体化したものである。 The annular plate 55 is fixed vertically to the plate material 51 by welding or the like at one longitudinal end of the plate material 51. The annular plate 55 has a portion protruding from one longitudinal end of the plate material 51 to the curved inner peripheral side of the plate material 51.
As shown in FIGS. 1A and 5A, the annular plate 55 (specifically, the portion that protrudes toward the curved inner peripheral side of the plate material 51) constitutes a part of the bottom wall 53 of the tank 50. To do.
As shown in FIG. 1A, the bottom wall 53 has an annular plate 55 arranged in a plurality of rings along the tank peripheral wall 52, and a plurality of bottom plates 57 provided on the inside thereof, and these are welded together. Are integrated.

図５（ａ）に示すように、タンク構築方法において、縦パネル５６は、アニュラープレート５５を施工面Ｓに重ね合せるようにして施工面Ｓ上に設置し、板材５１の縦方向が上下方向となるように施工面Ｓ上に立設する。   As shown in FIG. 5A, in the tank construction method, the vertical panel 56 is installed on the construction surface S so that the annular plate 55 is superimposed on the construction surface S, and the vertical direction of the plate material 51 is the vertical direction. It stands up on the construction surface S.

ここで説明するタンク構築方法では、まず、タンク５０の底壁５３を構成する複数の底板５７を施工面Ｓ上に設置する。
次いで、縦パネル５６を１枚ずつ施工面Ｓ上に建て込んでいき、タンク周壁５２を構成する板材５１を環状に仮組する仮組み工程を行う。 In the tank construction method described here, first, a plurality of bottom plates 57 constituting the bottom wall 53 of the tank 50 are installed on the construction surface S.
Next, the vertical panels 56 are built one by one on the construction surface S, and a temporary assembly process is performed in which the plate members 51 constituting the tank peripheral wall 52 are temporarily assembled in an annular shape.

仮組み工程では、先行して施工面Ｓ上に設置（第一板材設置工程）した縦パネル５６の板材５１を第一板材、次に施工面Ｓ上に設置（第二板材設置工程）する縦パネル５６の板材５１を第二板材として、第一板材設置工程、第二板材設置工程、及び連結部４を組み立てる接続部材固定工程をこの順で繰り返し実施し、タンク周壁５２を構成する板材５１を環状に仮組する。   In the temporary assembly process, the vertical plate 56 is first installed on the construction surface S (first plate material installation step), and the vertical plate 56 is installed on the construction surface S (second plate material installation step). Using the plate material 51 of the panel 56 as the second plate material, the first plate material installation step, the second plate material installation step, and the connecting member fixing step for assembling the connecting portion 4 are repeated in this order, and the plate material 51 constituting the tank peripheral wall 52 is formed. Temporarily assemble in an annular shape.

第二板材設置工程では、先行設置した縦パネル５６に隣接させて別の縦パネル５６を施工面Ｓ上に建て込んで設置（立設）する。
第二板材設置工程にて設置する縦パネル５６の板材５１（第二板材）の突出端部２１ａ（図３参照）は、先行設置した縦パネル５６の第一部材固定板部１２ａの先端部１２ｄのおもて面側に重ね合わせるように配置する（図３参照）。第二板材設置工程にて設置する縦パネル５６は、第二接続部材２２先端側の接続用板部２２ｂを、先行設置した縦パネル５６の第一接続部材１２先端側の接続用板部１２ｂに重ね合わせる（突き合わせる）ようにして配置する（図３参照）。第一接続部材１２及び第二接続部材２２の接続用板部１２ｂ、２２ｂ同士の重ね合わせは、具体的には、接続用板部１２ｂ、２２ｂの当接面１２ｆ、２２ｆの重ね合わせである。 In the second plate material installation step, another vertical panel 56 is installed on the construction surface S so as to be adjacent to the previously installed vertical panel 56 (installed).
The protruding end portion 21a (see FIG. 3) of the plate member 51 (second plate member) of the vertical panel 56 installed in the second plate member installation step is the front end portion 12d of the first member fixing plate portion 12a of the vertical panel 56 installed in advance. It arrange | positions so that it may overlap with the front surface side (refer FIG. 3). The vertical panel 56 to be installed in the second plate material installation step is configured such that the connection plate 22b on the distal end side of the second connection member 22 is connected to the connection plate 12b on the distal end side of the first connection member 12 of the vertical panel 56 installed in advance. It arrange | positions so that it may overlap (match) (refer FIG. 3). Specifically, the overlapping of the connecting plate portions 12b and 22b of the first connecting member 12 and the second connecting member 22 is an overlapping of the contact surfaces 12f and 22f of the connecting plate portions 12b and 22b.

接続部材固定工程では、第一板材設置工程にて設置した縦パネル５６の板材５１（第一板材１１）の第一接続部材１２と、第二板材設置工程にて設置した縦パネル５６の板材５１（第二板材２１）の第二接続部材２２とを締結具３１を用いて連結固定して連結部４（図３参照）を組み立てる。
その結果、互いに隣接する縦パネル５６の第一接続部材１２及び第二接続部材２２同士の突き合わせ（図３では具体的には第一板材１１及び第二板材２１の接続用板部１２ｂ、２２ｂ同士の突き合わせ）によって板材５１間の距離が決まり、所望の形状、寸法の溶接開先２が確保される。 In the connection member fixing step, the first connection member 12 of the plate member 51 (first plate member 11) of the vertical panel 56 installed in the first plate member installation step and the plate member 51 of the vertical panel 56 installed in the second plate member installation step. The second connecting member 22 of the (second plate member 21) is connected and fixed using the fastener 31 to assemble the connecting portion 4 (see FIG. 3).
As a result, the first connection member 12 and the second connection member 22 of the vertical panels 56 adjacent to each other are abutted (specifically, in FIG. 3, the connection plate portions 12 b and 22 b of the first plate member 11 and the second plate member 21 are connected to each other. The distance between the plate members 51 is determined, and a weld groove 2 having a desired shape and size is secured.

第一部材固定板部１２ａの先端部１２ｄのおもて面と、第二板材設置工程にて設置する板材５１（第二板材）の突出端部２１ａの裏面とを当接させる（第一部材固定板部１２ａの先端部１２ｄに第二板材の突出端部２１ａを重ね合わせる）ことで突出端部２１ａの先行設置された板材５１に対する位置合わせを容易にする役割を果たす。
また、図３に示すように、連結部４において、互いに隣接する板材５１間の溶接開先２の裏面側は、第一部材固定板部１２ａの先端部１２ｄによって塞がれる。第一部材固定板部１２ａの先端部１２ｄは、溶接開先２の裏当て材の役割も果たす。 The front surface of the front end portion 12d of the first member fixing plate portion 12a is brought into contact with the back surface of the protruding end portion 21a of the plate material 51 (second plate material) installed in the second plate material installation step (first member). By overlapping the protruding end portion 21a of the second plate material on the front end portion 12d of the fixed plate portion 12a), the positioning of the protruding end portion 21a with respect to the previously installed plate material 51 is facilitated.
Moreover, as shown in FIG. 3, in the connection part 4, the back surface side of the welding groove 2 between the mutually adjacent board | plate materials 51 is block | closed by the front-end | tip part 12d of the 1st member fixing plate part 12a. The front end portion 12d of the first member fixing plate portion 12a also serves as a backing material for the welding groove 2.

図６に示すように、仮組み工程では、底壁５３用の底板５７上に固定された支保用連結ブロック５７ａと、設置済み縦パネル５６の板材５１上端部の湾曲内周側に設けられた支保用連結用ブロック５１ａとを連結する支保用バー５８を設置する。支保用バー５８は、底板５７の支保用連結ブロック５７ａと設置済み縦パネル５６の支保用連結用ブロック５１ａとを連結することで、設置済み縦パネル５６の板材５１を支持して縦パネル５６の設置状態を安定に保ち、第一、第二接続部材１２、２２の締結固定のためのボルト締めを容易にする。   As shown in FIG. 6, in the temporary assembly step, the support connecting block 57 a fixed on the bottom plate 57 for the bottom wall 53 and the curved inner peripheral side of the upper end portion of the plate member 51 of the installed vertical panel 56 are provided. A support bar 58 that connects the support connecting block 51a is installed. The support bar 58 connects the support connection block 57 a of the bottom plate 57 and the support connection block 51 a of the installed vertical panel 56, thereby supporting the plate material 51 of the installed vertical panel 56 and supporting the vertical panel 56. The installation state is kept stable, and bolt fastening for fastening and fixing the first and second connecting members 12 and 22 is facilitated.

仮組み工程が完了したら、仮組工程で仮組された板材５１同士を溶接する溶接工程を行う。溶接工程では、具体的には、図３の連結部４に確保された溶接開先２の溶接によって溶接部３（図４参照）を形成する。溶接開先２の
溶接工程では、例えば、上下方向に延びる溶接開先２に沿ってレールを設置し、このレールを走行する自走式溶接機によって溶接開先２の全長を溶接する。 When the temporary assembly process is completed, a welding process for welding the plate members 51 temporarily assembled in the temporary assembly process is performed. In the welding process, specifically, the welded portion 3 (see FIG. 4) is formed by welding the weld groove 2 secured to the connecting portion 4 in FIG. In the welding process of the welding groove 2, for example, a rail is installed along the welding groove 2 extending in the vertical direction, and the entire length of the welding groove 2 is welded by a self-propelled welding machine that travels on the rail.

溶接工程が完了とすると、タンク周壁５２が完成する。
タンク周壁５２が完成したら、次いで、タンク周壁５２上に天蓋５４を施工する天蓋施工工程を実施する。 When the welding process is completed, the tank peripheral wall 52 is completed.
When the tank peripheral wall 52 is completed, a canopy construction process for constructing the canopy 54 on the tank peripheral wall 52 is then performed.

なお、支保用バー５８は、仮組み工程の完了後、複数環状配置された板材５１によって取り囲まれた内側から撤去していく。
全ての支保用バー５８の撤去が完了したら、各縦パネル５６のアニュラープレート５５及び底板５７を溶接接合して底壁５３を構築する底壁構築工程を行う。
底壁構築工程の実施は、仮組み工程の完了後、天蓋施工工程の前、天蓋施工工程の後のいずれでも良く、また、天蓋施工工程と並行して行っても良い。 In addition, the support bar 58 is removed from the inner side surrounded by the plurality of annularly arranged plate members 51 after the provisional assembly process is completed.
When the removal of all the support bars 58 is completed, a bottom wall construction step is performed in which the annular plate 55 and the bottom plate 57 of each vertical panel 56 are welded and joined to construct the bottom wall 53.
The bottom wall construction process may be performed after the temporary assembly process is completed, before the canopy construction process, after the canopy construction process, or in parallel with the canopy construction process.

底壁構築工程及び天蓋施工工程が完了したらタンク５０が完成し、タンク構築方法が完了する。   When the bottom wall construction process and the canopy construction process are completed, the tank 50 is completed, and the tank construction method is completed.

上述した溶接方法、タンク構築方法によれば、接続部材固定工程にて連結部４（図３参照）を組み立てることで、互いに隣接する板材５１間（第一、第二板材１１、２１間）の距離が決まり、所望の形状、寸法の溶接開先２を精度良く確実に形成できる。
このため、図３に示すように、互いに隣接する板材５１間（第一、第二板材１１、２１間）にルート間隔ｇを確保した溶接開先２の形成も可能であり、また、溶接工程の完了まで連結部４の溶接開先２に確保したルート間隔ｇを安定かつ確実に維持できる。その結果、上述した溶接方法、タンク構築方法によれば、互いに隣接する板材５１間の溶接、及びそれによるタンク周壁５２の構築を精度良く行うことができ、施工品質を向上できる。
また、上述した溶接方法、タンク構築方法は、互いに突き合わせた接続部材（第一、第二接続部材１２、２２）同士を固定（連結）するだけで、簡単かつ短時間（施工時間の短縮）で板材５１同士を所望の離隔距離を確保した状態に連結できる。このため、上述した溶接方法、タンク構築方法は、工期短縮の点で有利である。 According to the welding method and the tank construction method described above, by assembling the connecting portion 4 (see FIG. 3) in the connecting member fixing step, between the adjacent plate materials 51 (between the first and second plate materials 11, 21). The distance is determined, and the welding groove 2 having a desired shape and size can be accurately and reliably formed.
For this reason, as shown in FIG. 3, it is also possible to form the welding groove 2 that secures the root interval g between the adjacent plate members 51 (between the first and second plate members 11 and 21), and the welding process. The route interval g secured in the welding groove 2 of the connecting portion 4 can be stably and reliably maintained until the completion. As a result, according to the above-described welding method and tank construction method, welding between the plate members 51 adjacent to each other and construction of the tank peripheral wall 52 thereby can be performed with high accuracy, and the construction quality can be improved.
Moreover, the welding method and the tank construction method described above are simple and short (reduction of construction time) simply by fixing (connecting) the connecting members (first and second connecting members 12 and 22) that face each other. The plate members 51 can be connected to each other in a state where a desired separation distance is secured. For this reason, the welding method and tank construction method described above are advantageous in terms of shortening the work period.

図３に示すように、互いに隣接する板材５１間の距離は、第一部材固定板部１２ａの先端部１２ｄの板材からの突出寸法（左右方向における突出寸法）、及び第二板材２１の突出端部２１ａの第二接続部材２２からの突出寸法（具体的には、左右方向における第二部材固定板部２２ａからの突出寸法）の一方または両方の調整によって容易に変更できる。
このため、上述した溶接方法、タンク構築方法によれば、板材５１間（第一板材と第二板材との間）の開先２の設計自由度を向上できる。その結果、溶接部３の設計自由度、板材の板厚等の寸法自由度も向上できる。 As shown in FIG. 3, the distance between the adjacent plate members 51 is a protruding dimension (protruding dimension in the left-right direction) of the front end portion 12 d of the first member fixing plate portion 12 a and a protruding end of the second plate member 21. It can be easily changed by adjusting one or both of the projecting dimensions of the portion 21a from the second connecting member 22 (specifically, projecting dimensions from the second member fixing plate 22a in the left-right direction).
For this reason, according to the welding method and tank construction method described above, the design freedom of the groove 2 between the plate members 51 (between the first plate member and the second plate member) can be improved. As a result, the degree of freedom in design of the welded portion 3 and the degree of freedom in dimensions such as the plate thickness of the plate material can be improved.

なお、連結部４に確保する溶接開先２は、ルート間隔が確保されておらず、互いに隣接する板材５１同士が当接された構成も採用可能である。   Note that the welding groove 2 secured in the connecting portion 4 does not have a route interval, and a configuration in which plate members 51 adjacent to each other are in contact with each other can also be employed.

また、上述した溶接構造、溶接方法、タンク、タンク構築方法によれば、互いに隣接する板材５１の第一接続部材１２及び第二接続部材２２同士の突き合わせ（図３では具体的には接続用板部１２ｂ、２２ｂ同士の突き合わせ）によって、溶接完了後も板材５１間の相対位置を安定に保つことができる。このため、溶接部３を形成する溶接金属の溶融状態からの固化に伴う収縮による板材間の相対位置の変化や、それによるタンク周壁５２の歪み発生を抑えることができる。その結果、タンク周壁５２の歪みが少なく、耐久性、密閉性に優れるタンク５０を容易に得ることができる。   Moreover, according to the welding structure, the welding method, the tank, and the tank construction method described above, the first connection member 12 and the second connection member 22 of the plate material 51 adjacent to each other (in FIG. 3, specifically, the connection plate). By matching the portions 12b and 22b), the relative position between the plate members 51 can be kept stable even after the welding is completed. For this reason, the change of the relative position between plate materials by the shrinkage | contraction accompanying solidification from the molten state of the weld metal which forms the welding part 3, and the distortion generation of the tank surrounding wall 52 by it can be suppressed. As a result, it is possible to easily obtain the tank 50 with less distortion of the tank peripheral wall 52 and excellent durability and sealability.

上述した溶接構造及びタンクは、その構成から、上述した溶接方法、タンク構築方法を採用可能である。このため、板材５１間（第一板材と第二板材との間）の開先２の設計自由度向上により、溶接部３の設計自由度、板材の板厚等の寸法自由度も向上できる。   The above-described welding method and tank construction method can be adopted for the above-described welding structure and tank because of its configuration. For this reason, the design freedom of the groove | channel 2 between the board | plate materials 51 (between a 1st board | plate material and a 2nd board | plate material) can also improve the dimensional freedom, such as the design freedom of the welding part 3, the board thickness of a board | plate material.

以上、本発明を最良の形態に基づいて説明してきたが、本発明は上述の最良の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の改変が可能である。
本発明に係る溶接構造、溶接方法は、タンクの構築に限定されず、板材同士の突き合わせ溶接に広く適用できる。本発明の溶接構造、溶接方法は、第一接続部材が固定された第一板材と第二接続部材が固定された第二板材との突き合わせ溶接に広く適用可能である。この点、本発明の溶接構造、溶接方法は、板材５１に第一、第二接続部材１２、２２が固定されたパネルの使用に限定されず、第一、第二接続部材のうち第一接続部材のみが固定された第一板材と第二接続部材のみが固定された第二板材との突き合わせ溶接にも適用可能である。 Although the present invention has been described based on the best mode, the present invention is not limited to the above-described best mode, and various modifications can be made without departing from the gist of the present invention.
The welding structure and welding method according to the present invention are not limited to the construction of a tank, and can be widely applied to butt welding of plate materials. The welding structure and welding method of the present invention can be widely applied to butt welding of a first plate member to which a first connection member is fixed and a second plate member to which a second connection member is fixed. In this respect, the welding structure and the welding method of the present invention are not limited to the use of the panel in which the first and second connection members 12 and 22 are fixed to the plate material 51, and the first connection among the first and second connection members. The present invention can also be applied to butt welding of a first plate member to which only members are fixed and a second plate member to which only second connection members are fixed.

第一、第二接続部材を互いに固定する固定手段としては、上述の実施形態にて例示したように第一、第二接続部材を貫通させるボルトとナットとを用いる構成以外に、例えば第一、第二接続部材を一対の挟持部材間に一括挟持して機械的に固定する構成の締結具等も採用可能である。また、第一、第二接続部材を互いに固定する固定手段としては、締結具以外に、例えば溶接等も採用可能である。   As fixing means for fixing the first and second connecting members to each other, as exemplified in the above-described embodiment, in addition to the configuration using bolts and nuts that penetrate the first and second connecting members, for example, first, A fastener or the like configured to mechanically fix the second connecting member between the pair of holding members and to fix the second connecting member collectively can also be employed. Further, as a fixing means for fixing the first and second connecting members to each other, for example, welding or the like can be employed in addition to the fastener.

第一、第二接続部材は、互いに突き合わせることで第一、第二板材間の距離を設定可能、かつ互いに固定可能な構成であれば良く、その具体的構成は適宜変更可能である。第一、第二接続部材の接続用突部は、ボルト孔が貫通形成されたものに限定されず、ボルト孔が形成されていないものも採用可能である。また、図２、図３、図４に例示した第一、第二接続部材１２、２２の接続用突部は、具体的には、固定板部１２ａ、２２ａに垂直の板状（固定板部からの突出寸法に比べて板厚が小さい板状）の接続用板部１２ｂ、２２ｂであるが、接続用突部は、例えば、左右方向寸法が固定板部からの突出寸法と同等かあるいは大きいリブ状、等であっても良い。
図７に示すように、第二接続部材は、第二板材２１のその溶接部側の縁部（あるいは溶接部が形成される側の縁部）に沿った複数箇所に固定された構成も採用可能である。図７の第二接続部材に符号２２Ａを付記する。
図８に示すように、第一接続部材は、第一板材１１にその溶接部側の縁部（あるいは溶接部が形成される側の縁部）に沿って固定された帯板状の第一部材固定板部１２ａの長手方向複数箇所の裏面（第一板材１１とは反対側の面）に接続用突部１２ｅが固定された構成も採用可能である。図８の第一接続部材に符号１２Ａを付記する。 The first and second connecting members may be configured so that the distance between the first and second plate members can be set by abutting each other and can be fixed to each other, and the specific configuration can be changed as appropriate. The connection protrusions of the first and second connection members are not limited to those through which bolt holes are formed, and those without bolt holes can also be employed. Further, the connecting protrusions of the first and second connecting members 12 and 22 illustrated in FIGS. 2, 3, and 4 are specifically plate-shaped (fixed plate portions) perpendicular to the fixed plate portions 12a and 22a. The connecting plate portions 12b and 22b have a plate thickness that is smaller than the projecting dimension from the connecting plate. However, the connecting projecting portion has, for example, a dimension that is equal to or larger than the projecting dimension from the fixed plate unit. It may be a rib shape or the like.
As shown in FIG. 7, the second connecting member also adopts a configuration in which the second plate member 21 is fixed at a plurality of locations along the edge on the welded part side (or the edge on the side where the welded part is formed). Is possible. Reference numeral 22A is added to the second connection member of FIG.
As shown in FIG. 8, the first connecting member is a first strip-shaped first plate fixed to the first plate member 11 along the edge on the welded portion side (or the edge on the side where the welded portion is formed). A configuration in which the connecting protrusions 12e are fixed to the back surfaces (surfaces opposite to the first plate material 11) at a plurality of positions in the longitudinal direction of the member fixing plate portion 12a can also be adopted. Reference numeral 12A is added to the first connecting member of FIG.

溶接構造、溶接方法、タンク、タンク構築方法に用いるパネルは、アニュラープレートを有していない構成も採用可能である。
溶接構造、溶接方法、タンク、タンク構築方法に用いるパネルは、例えば、上述の実施形態に例示した縦パネル５６（板材５１に第一、第二接続部材１２、２２及びアニュラープレート５５を固定したもの）からアニュラープレートを省略した構成のものも採用可能である。 The panel used for the welding structure, the welding method, the tank, and the tank construction method can also employ a configuration that does not have an annular plate.
The panel used for the welding structure, welding method, tank, and tank construction method is, for example, the vertical panel 56 exemplified in the above-described embodiment (the first and second connecting members 12 and 22 and the annular plate 55 are fixed to the plate material 51. ) From which the annular plate is omitted can also be adopted.

１…溶接構造、２…溶接開先、２ａ…主溝部、３…溶接部、４…連結部、１１…第一板材、１２、１２Ａ…第一接続部材、１２ａ…固定板部、１２ｂ…接続用突部（接続用板部）、１２ｃ…基端部、１２ｄ…先端部、１２ｅ…接続用突部（接続用板部）、１２ｆ…当接面、１２ｈ…ボルト孔、２１…第二板材、２２、２２Ａ…第二接続部材、２２ａ…固定板部、２２ｂ…接続用突部（接続用板部）、２２ｆ…当接面、２２ｈ…ボルト孔、３１…締結具、５０…タンク、５１…板材、５２…周壁、ｇ…ルート間隔。   DESCRIPTION OF SYMBOLS 1 ... Welding structure, 2 ... Welding groove, 2a ... Main groove part, 3 ... Welded part, 4 ... Connection part, 11 ... First plate material, 12, 12A ... First connection member, 12a ... Fixed plate part, 12b ... Connection Projection (connection plate), 12c ... Base end, 12d ... Tip, 12e ... Connection projection (connection plate), 12f ... Contact surface, 12h ... Bolt hole, 21 ... Second plate , 22, 22A ... second connecting member, 22a ... fixing plate portion, 22b ... connecting protrusion (connecting plate portion), 22f ... contact surface, 22h ... bolt hole, 31 ... fastener, 50 ... tank, 51 ... plate material, 52 ... peripheral wall, g ... route interval.

Claims (10)

第一接続部材が縁部に沿って延び、基端部で固定されているとともに先端部が前記縁部から突出する第一板材と、
第二接続部材が前記第一板材に隣接配置された縁部に沿って前記縁部から後退した位置に固定され、前記第二接続部材から前記第一部材側に突出する突出端部を有する第二板材とを備え、
前記第一接続部材と前記第二接続部材とが突き当て固定され、前記第一接続部材の先端部に前記第二板材の突出端部が重ね合わされ、前記第一板材と前記第二板材との間に溶接部が形成されている溶接構造。 A first plate member that extends along the edge, is fixed at the base end, and a tip protrudes from the edge;
A second connecting member is fixed at a position retracted from the edge along the edge disposed adjacent to the first plate member, and has a protruding end protruding from the second connecting member toward the first member. With two plates,
The first connection member and the second connection member are abutted and fixed, and the protruding end portion of the second plate member is overlapped with the tip portion of the first connection member, and the first plate member and the second plate member A welded structure with welds in between. 請求項１に記載の溶接構造において、
前記第一接続部材は、基端部で前記第一板材の裏面に固定されているとともに先端部が前記第一板材の前記縁部から突出する固定板部と、固定板部の裏面側に突出する接続用突部とを有し、前記第一接続部材と第二接続部材との間は前記第一接続部材の前記接続用突部と前記第二接続部材との固定によって互いに固定されている溶接構造。 The welded structure according to claim 1,
The first connecting member is fixed to the back surface of the first plate member at the base end portion, and a distal end portion protrudes from the edge portion of the first plate member, and protrudes to the back surface side of the fixed plate portion. And the first connecting member and the second connecting member are fixed to each other by fixing the connecting protruding portion of the first connecting member and the second connecting member. Welded structure. 請求項２の溶接構造において、
前記第一接続部材の前記接続用突部と前記第二接続部材とはボルトを有する締結装置によって締結固定されている溶接構造。 The welded structure of claim 2,
The welding structure in which the connection projection of the first connection member and the second connection member are fastened and fixed by a fastening device having a bolt. 請求項１または２に記載の溶接構造において、
前記第二板材には、前記第一板材に隣接配置された縁部に沿って、一又は複数の前記第２接続部材が固定されている溶接構造。 The welded structure according to claim 1 or 2,
A welding structure in which one or a plurality of the second connection members are fixed to the second plate material along an edge portion disposed adjacent to the first plate material. 板材同士を溶接するための溶接方法であって、
第一接続部材が溶接部となる縁部に沿って延び、基端部で固定されているとともに先端部が前記縁部から突出する第一板材を設置する第一板材設置工程と、
第二接続部材が前記第一板材との溶接部となる縁部に沿って前記縁部から後退した位置に固定され、前記第二接続部材から前記第一部材側に突出する突出端部を有する第二板材を、前記第一接続部材の先端部に前記第二板材の突出端部を重ね合わせ、かつ前記第一板材の第一接続部材に前記第二接続部材を突き当てるようにして設置し、前記第一板材と前記第二板材との間に溶接開先を確保する第二板材設置工程と、
第一接続部材と第二接続部材とを固定する接続部材固定工程と、
前記接続部材同士が固定された状態で、前記溶接開先に対して溶接を行う溶接工程とを備える溶接方法。 A welding method for welding plate materials,
A first plate member installation step of installing a first plate member that extends along an edge portion that becomes a welded portion and is fixed at a base end portion and a distal end portion protrudes from the edge portion;
The second connecting member is fixed at a position retracted from the edge along the edge serving as a welded portion with the first plate member, and has a protruding end protruding from the second connecting member toward the first member. The second plate member is installed so that the protruding end portion of the second plate member overlaps the tip end portion of the first connection member and the second connection member abuts against the first connection member of the first plate member. A second plate material installation step for securing a weld groove between the first plate material and the second plate material;
A connecting member fixing step for fixing the first connecting member and the second connecting member;
A welding method comprising: a welding step of performing welding on the welding groove in a state where the connection members are fixed to each other. 請求項５に記載の溶接方法において、
前記第一接続部材は、基端部で前記第一板材の裏面に固定されているとともに先端部が前記第一板材の前記縁部から突出する固定板部と、固定板部の裏面側に突出する接続用突部とを有し、
前記第二板材設置工程では、前記第二接続部材を前記第一接続部材の前記接続用突部に突き当てるようにして第二板材を設置し、
前記接続部材固定工程では、前記第一接続部材の前記接続用突部と前記第二接続部材とを固定することで前記第一接続部材と前記第二接続部材とを固定する溶接方法。 The welding method according to claim 5,
The first connecting member is fixed to the back surface of the first plate member at the base end portion, and a distal end portion protrudes from the edge portion of the first plate member, and protrudes to the back surface side of the fixed plate portion. And a connecting projection to
In the second plate material installation step, the second plate member is installed so that the second connection member abuts against the connection protrusion of the first connection member,
In the connecting member fixing step, the welding method of fixing the first connecting member and the second connecting member by fixing the connecting projection of the first connecting member and the second connecting member. 請求項６に記載の溶接方法において、
前記接続部材固定工程では、前記第一接続部材の前記接続用突部と前記第二接続部材とをボルトを有する締結装置によって締結固定する溶接方法。 The welding method according to claim 6, wherein
In the connection member fixing step, a welding method in which the connection protrusion of the first connection member and the second connection member are fastened and fixed by a fastening device having a bolt. 請求項５〜７のいずれか１項に記載の溶接方法において、
前記第二板材には、前記第一板材に隣接配置された縁部に沿って、一又は複数の前記第２接続部材が固定されている溶接方法。 In the welding method of any one of Claims 5-7,
A welding method in which one or a plurality of the second connection members are fixed to the second plate material along an edge portion disposed adjacent to the first plate material. 請求項５〜８のいずれか１項に記載の溶接方法によってタンクを構築するタンク構築方法であって、
一側部に前記第一接続部材、一側部とは反対の他側部に前記第二接続部材がそれぞれ固定された板材を用い、先行する板材を第一板材、次に設置する板材を第二板材として、順次、前記第一板材設置工程、前記第二板材設置工程及び前記接続部材固定工程を実施し、周壁を構成する板材を環状に仮組する仮組工程と、
前記仮組工程で仮組された板材同士を溶接する溶接工程とを備えるタンク構築方法。 A tank construction method for constructing a tank by the welding method according to any one of claims 5 to 8,
The first connecting member is used on one side and the second connecting member is fixed on the other side opposite to the one side. The first plate is used as the preceding plate, and the next plate is installed next. As the two plate materials, the first plate material installation step, the second plate material installation step and the connection member fixing step are sequentially performed, and the temporary assembly step of temporarily assembling the plate materials constituting the peripheral wall in an annular shape,
A tank construction method comprising: a welding step of welding the plate members temporarily assembled in the temporary assembly step. 請求項１〜４のいずれか１項に記載の溶接構造を有するタンクであって、
一側部に前記第一接続部材、一側部とは反対の他側部に前記第二接続部材がそれぞれ固定された板材が複数環状に配置された周壁を有し、
互いに隣り合う板材が前記溶接構造によって互いに固定されているタンク。 A tank having the welded structure according to any one of claims 1 to 4,
The first connection member on one side, and a peripheral wall in which a plurality of plate members each having the second connection member fixed to the other side opposite to the one side are arranged in an annular shape,
A tank in which plate members adjacent to each other are fixed to each other by the welding structure.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181237A (en) * 1978-08-30 1980-01-01 Chicago Bridge & Iron Company Liquid storage tank with welded joint drain canal system and wall stiffener system
JPS5833491U (en) * 1981-08-27 1983-03-04 住友金属工業株式会社 Cylindrical steel cell
JP2002179185A (en) * 2000-12-15 2002-06-26 Nippon Steel Corp Steel tank comprising longitudinal panel, and constructing method thereof
CN101858161A (en) * 2010-07-13 2010-10-13 中国化学工程第四建设公司 Construction method of low-temperature double-wall storage tanks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181237A (en) * 1978-08-30 1980-01-01 Chicago Bridge & Iron Company Liquid storage tank with welded joint drain canal system and wall stiffener system
JPS5833491U (en) * 1981-08-27 1983-03-04 住友金属工業株式会社 Cylindrical steel cell
JP2002179185A (en) * 2000-12-15 2002-06-26 Nippon Steel Corp Steel tank comprising longitudinal panel, and constructing method thereof
CN101858161A (en) * 2010-07-13 2010-10-13 中国化学工程第四建设公司 Construction method of low-temperature double-wall storage tanks

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