| 摘要 |
PROBLEM TO BE SOLVED: To efficiently disassemble these cylindrical structures in a cylindrical structure having the height unreachable by a crawler type tower crane or a cylindrical structure unable to secure a sufficient space on the periphery. SOLUTION: An opening part 3 is formed below a cutting part 1a of the cylindrical structure (a steel chimney 1), and a support member 4 for supporting the lower end of a mast (a steel mast 5) is installed in this opening 3, and a cutting piece 1b of cutting the upper end of the mast is positioned in the suspendible height. The one end side of a wire 6 is liftably suspended from the upper end part vicinity of the mast, and the cutting piece 1b is hung down by hoisting and delivering the other end side by a winch 7. The cylindrical structure is disassembled while successively downwardly transferring a disassembling crane 2 of the constitution by repeating such work. COPYRIGHT: (C)2006,JPO&NCIPI
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