| 摘要 |
PROBLEM TO BE SOLVED: To suppress stress concentration on an anchorage part of prestressing steel arranged on the outer peripheral side of a roof in addition to suppression of an increase in weight and cost, in the prestressed concrete roof of a cylindrical tank.SOLUTION: A plurality of pieces of prestressing steel 11, which are arranged along a radial direction on an outer peripheral side of a disk-like roof and arranged side by side in a circumferential direction, are provided. The plurality of pieces of prestressing steel 11 comprise both arm parts of folded prestressing steel 12 folded back in such a manner as to be opened to the outer peripheral side in a plan view of the roof. |
