CYLINDRICAL STRUCTURE ASSEMBLY METHOD, FRAME, AND CYLINDRICAL STRUCTURE: Fid-Bau Portal

CYLINDRICAL STRUCTURE ASSEMBLY METHOD, FRAME, AND CYLINDRICAL STRUCTURE

MUROYA KENGO / MISAKA EIICHI / TOYOMARU MAKOTO

To provide a cylindrical structure assembly method that can work even in a narrow space.SOLUTION: A cylindrical structure assembly method comprises: a lamination step (S11) for laminating a first cylindrical body and a second cylindrical body in a vertical direction and temporarily fixing them; an insertion step (S12) for lifting the first cylindrical body and the second cylindrical body temporarily fixed in the lamination step, moving a carriage on which a frame is placed just below the first cylindrical body and the second cylindrical body lifted, and inserting the frame into an internal space of the second cylindrical body by hanging down the first cylindrical body and the second cylindrical body; a taking-out step (S13, S14) for leaving the frame inserted in the insertion step into the internal space of the second cylindrical body and taking out the carriage; and a welding step (S15) for welding, on the frame left there, an inner peripheral surface of a joint part of the first cylindrical body and the second cylindrical body laminated.SELECTED DRAWING: Figure 2

【課題】狭小地でも作業が可能な円筒状構造物の組立方法を提供する。【解決手段】円筒状構造物の組立方法は、第１円筒体及び第２円筒体を上下方向に積層して仮固定する積層工程（Ｓ１１）と、積層工程で仮固定された第１円筒体及び第２円筒体を吊上げ、吊上げた第１円筒体及び第２円筒体の直下に架台が載置された台車を移動させ、第１円筒体及び第２円筒体を吊下ろすことによって、第２円筒体の内部空間に架台を挿入する挿入工程（Ｓ１２）と、挿入工程で挿入された架台を第２円筒体の内部空間に残置して、台車を取り出す取出工程（Ｓ１３、Ｓ１４）と、積層された第１円筒体及び第２円筒体の接合部分の内周面を、残置された架台上で溶接する溶接工程（Ｓ１５）とを含む。【選択図】図２

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