| 摘要 |
<p>The climbing or standing formwork (1) is esp. suitable for concrete or reinforced-concrete structures, of circular or annular plan shape, and pref. of large diameter, and of cylindrical or conical shape in elevation. It is in the form of closed or multi-part formwork without form anchors necessarily passing through the structure, and with peripheral horizontal circular bonding units. The outside form membrane (2) is pressure; or pressure and tension, resistant. The ties, producing annular tension effect, are in the form of prestressing rings (6), with at least one stressing device for each ring. Form-locking effect between form membrane and prestressing ring is generated by direct and almost constant contact, or contact with space-retaining lining pieces set at a very slight interval. Deformation of formwork is prevented by separate stiffening measures for the outside and inside form membrane (11).</p> |
