| 摘要 |
PROBLEM TO BE SOLVED: To reduce the work time when a wind mill support pillar is fixed by pouring concrete into a lower end part of the wind mill support pillar.SOLUTION: A fixing method of a wind mill support pillar 1 comprises the steps of: preparing the wind mill support pillar 1 from a steel pipe 10 having a flange part 11; forming a plurality of open holes 11a on the flange part 11; pouring first stage concrete 2A to an extruded state of an upper part of steel bars 3A; arranging the support pillar 1 such that the steel bars 3A are inserted into the open holes 11a; confirming whether concrete rises from lower end openings of the open holes 11a before pouring second stage concrete 2B; and continuing the pouring concrete after the confirmation, thereby, air bubbles below the flange part 11 can be efficiently extracted from the open holes 11a so as to reduce the compaction operation time by a vibrator and so forth, so that the overall operation time can also be reduced. |
