(1) The ultra-high columns are constructed in sections, each section not exceeding 3.0 m. The vertical back flange of the steel template is made of 5 mm thick steel plate, and the distance between the back flanges is 350 mm.
(2) In order to facilitate the construction and ensure the overall stability of the scaffold, within the circular column range, floor-type steel pipe scaffold brackets are erected from the top of the foundation to connect multiple columns into a whole and connect them with the structural load-bearing brackets.
(3) At the column concrete construction joints, after cylindrical demoulding, install a special support at 100 mm under the top of the column, place the circular column formwork on the special support, and then tighten the bottom of the column mold with the column hoop to prevent the expansion of the mold. The special support is made of 10-gauge channel steel processing (see Figure 1).
(4) When installing the half-circular column steel mold, use the tower crane to put the two column steel mold into position from both sides of the column reinforcement. When assembling, use 2 mm thick self-adhesive foam on the side ribs of the joints of the cylindrical cylinder mold to fill the joint.
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