Corrosion-protected free tension member, mainly tightener for prestressed concrete without bonding

摘要

In the case of a stressing member for prestressed concrete without pretensioning in accordance with Patent ... (Patent Application P 3734954.6-25), at least one of the anchoring devices (4) is configured as a coupling point in which the anchor disc (8), in addition to bores for anchoring the incoming tensioning elements (2'), also exhibits bores for anchoring the outgoing tensioning elements (2''). Arranged at a distance from the anchor disc (8) is a sealing disc (13) which closes off the cavity formed by piping (10) and is provided with through-passages for the passage of the tensioning elements (2', 2''). The cavity between the sealing disc (13) and the anchoring device (4) is filled with a plastically deformable corrosion-protection composition (14), e.g. grease. The piping (10) adjoins, on the one hand, the abutment body (9) and, on the other hand, the sheath (10). By virtue of this configuration of the coupling point, it is also possible to achieve the longitudinal movability of the tensioning elements (2', 2''), despite injection of the tubular sheathing with hardening material, with the arrangement of the coupling point. Consequently, such a stressing member can be used even for structures which are to be produced in sections, for example timed-shifting bridges. IMAGE