| 摘要 |
PURPOSE:To simply construct a tall structure by a method in which a medium type frame and a side type frame are attached to a formwork support frame by means of C-bolts in a freely inserting and drawing manner in such a way as to enable it to lift automatically. CONSTITUTION:A self-lifting type formwork device consists of a number of formwork support frames 5 and 6, a medium-type frame 1 and a side-type frame 2 which are attached to the frames 5 and 6, a beam 13 to support the frame 5 above these frames 1 and 2, a jack 17 for raising the frames 1 and 2 alternately, and C-bolts 7 attached to the frame 5. The frames 1 and 2 can thus be automatically lifted alternately along the placed face of concrete by a simple operation, and a tall structure such as dam can be safely constructed.
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