| 摘要 |
<p>The method comprises: a) building a multi stacked column using a machine 6 with hydraulics to suspend an upper column 2 above a lower column 3 by separating them apart and an arm 7 attached to insert columns between the separated columns; b) building a gateway structure around the columns that stabilises the column; c) building steel platforms at ground level and then lifting them using a cable hoist; d) passing the steel platforms through the gateway structure, the gateway structure comprising a process of opening and closing different parts so that it remains attached to the columns while also creating an opening; e) locking the steel platforms to the columns and f) Strengthening the steel platforms with concrete/ Preferably the uppermost column comprises its own hoisting lifting system to reduce the requirement for using an external crane. The gateway portion in use clamps onto several columns at a number of vertically displaced points releasing the columns as the machine moves up the column.</p> |
