Anchoring device for the rod-shaped tension member of an anchor, especially a rock member

US4971493A · kind A · utility

Assignee

• Dyckerhoff & Widmann Aktiengesellschaft · DE

Inventors

• Thomas Herbst · Weßling, DE
• Lorenz Schnitzler · Pöcking, DE

Key dates

• Filing date: Oct 10, 1989
• Grant date: Nov 20, 1990
• Expiry date: Oct 10, 2009

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E04C5/125
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

An anchoring device for a tension member of an earth- or rock anchor, where a support element transmitting the tensile force is arranged between an anchoring element undisplaceably connected with the tension member and an anchor plate abuttable against a support base, the support element includes a cylindrical hollow body surrounding the anchoring element, whose inner wall has in its lower region projections protruding inward beyond its inner contour, against which the anchoring element abuts in a force-transmitting manner with partial regions of its cross-sectional area. If a predetermined tensile force is exceeded, the support element and/or the anchoring element can plastically deform in the region of their inter-engaging surfaces, so that a relative displacement occurs in axial direction. Distance or spacer pins are provided in a head plate placed upon the tension member for visual indication of the relative displacement, which after contact with the surface of the hollow body exit upwards from the head plate.