Method to make a rupture zone in a tension member for a prestressed ground anchor

摘要

In order to expand the free steel length of a tension member for a compression anchor (1) from a work hardened steel, the tension member (2) is subjected to controlled heating, e.g. by means of induction. This makes it possible to create a predetermined breaking point (6) before the tension member (2) is installed, without reducing its cross-section, at which the tension member (2) is reliable at the original breaking load or between the elastic limit and breaking load when a tensile force that exceeds the working load is applied tears. IMAGE