| 摘要 |
<p>The invention relates to a recoverable formwork device which has been designed preferably for concrete slabs reinforced with prestressed beams in the form of a recoverable metal module made from a laminar material that has been stiffened by means of folding and bending, preferably metal plates. Typically the invention takes the form of an arch with a cavity between the beams beneath the compression layer, such as to form a ribbed-type slab. The inventive device includes: a slightly curved upper horizontal branch which is symmetrical in relation to the centre line thereof and which has an angle of descent from said centre line towards the ends thereof, and two vertical branches which form an acute angle with the ends of the horizontal branch. Said vertical branches provide support for the supporting means that rest on the beams.</p> |
