Construction method of reinforced concrete reactor containment vessel

摘要

PURPOSE:To decrease the operations of removing temporary materials by making common use of support beams as linear anchors, installing the beams into a top slab, erecting temporary columns in a cylindrical part, installing the top slab and embedding the support beams and temporary columns into the body. CONSTITUTION:The container 21 is constructed by a 1st stage of building and completing the cylindrical part 21b of the reactor container 21 made of reinforced concrete to some height, the 2nd stage of erecting the temporary columns 32 to the upper part of the cylindrical part 21b and installing temporary brackets 31 to a shielding wall 25 as well at the point of the time when the cylindrical part 21b is completed, the 3rd stage of fixing an integrated unit of prefabricated liner plates 22, the support beams 30 and bottom end reinforcing bars onto the temporary brackets 31 and the temporary columns 32, the 4th stage of placing and curing concrete to the integrated unit, and the 5th stage of disassembling and ejecting the temporary brackets 31 after completion of the top slab 21a. The operations of removing the temporary materials are thereby decreased.