The manner null which interposes the prestressing steel in the prestressing hole of the concrete structural part

摘要

the feeding or inserting prestressed elements of steel, especially for steel wire by cementing in a betonbauteil of sheathing spannkanu00e4le produced to reduce the friction to great lengthsat small radii and / or with large umlenkwinkeln as conducted at certain points during the spannkanu00e4le directly kraftangriff to as additional direction of advance acting vorschubkru00e4fte and / or vibration of the prestressed elements upset.at the start of appropriate devices to each of the external surface of the component from accessible openings are provided. additional zwischenantriebe friction losses can be compensated to vorschubkraft; transfer of prestressed elements in the reibungsbeiwert vibration is greatly reduced.by these measures, if necessary, can be combined, if the friction so as to minimize that prestressed elements without significant friction kraftverluste fear also close bends or large umlenkwinkel can be introduced.