Stressing anchorage for at least one tension element running inside an

Abstract

For a stressing anchorage for a tension element running inside an encasing tube, a bearing plate with an annular opening is set up on an outer wall of a structural part. In an area of the opening turned away from the structural part there is a cone opening outward. A trumpet of plastic is bonded to the encasing tube, likewise of plastic, at its end situated in the structural part. The outer end of the trumpet is more or less flush with the face of the bearing plate turned away from the structural part. A transition piece projects into the trumpet with a projection leading in whose surface area is shaped frustoconically. Owing to the truncated cone, the outer end of the trumpet is pressed against the cone of the bearing plate, and is held firmly in an annular gap between the said truncated cone and the said cone after the anchor head is placed on the transition piece and the tensioning strands of the individual tension elements are pre-stressed and are held with the wedges. Since, in producing the stressing anchorage, first the inner end of the trumpet is bonded to the encasing tube and the outer end of the trumpet projects out of the structural part, this end being shortened to the necessary length only when the stressing anchorage has been fixed in position, the longitudinal tolerances in a transitional zone between the structural part and the prestressing tendons, or, respectively, between the end of the encasing tube and the outer wall of the structural part can be easily compensated. Shown in a variant embodiment is a correspondingly constructed electrically insulated stressing anchorage.