TANK ROOF FRAME CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a tank roof frame construction method capable of being widely applied regardless of width of a site and size of the scale of a roof frame without installing the whole face scaffolding in the inside of a tank body part and erecting a metal-made roof frame on the tank body part. SOLUTION: A temporary support structure 4 comprising a temporary center support part 41 positioned on a center part and a temporary peripheral edge support part 49 positioned on a peripheral edge part is constituted. The roof frame 21 is previously formed of a plurality of roof frame blocks 22, and one roof block 22 is mounted at a temporary placing position P of the temporary support structure 4. The roof block 22 is horizontally moved by a lateral enforcing force F applied on the roof frame block 22 about the center of a roof plane as a rotation axis C. Other roof frame blocks 22 are successively mounted at the temporary placing position P while being moved horizontally. The plurality of the roof frame blocks 22 are joined to one another to assemble the whole roof frame 21. COPYRIGHT: (C)2003,JPO