| 摘要 |
<p>The shuttering for circular concrete structures has at least one flexible inner shuttering lining which rests on beams (girders) arranged at a distance from one another. These are placed so as to bear against an endless chain of crossmembers which has a plurality of length- adjustable and otherwise rigid crossmembers which are adjustable in terms of angle with respect to one another and can be immobilized in the adjusted position. Provision has been made in this case for each of the contiguous crossmembers of the chain of crossmembers to be joined by means of a joining piece arranged in a beam and for it to be possible to immobilize each crossmember in its angular position with respect to this joining piece by means of an articulation block. The chain of crossmembers of shuttering of this type may be adapted satisfactorily to different diameters of shuttering, is rigid and may be immobilized with entrainment of form.</p> |
