| 摘要 |
An extrusion anchorage for insertion into a bore hole with subsequent infilling by buiding material has a support ring and a tensioning ring which force the spacer outwards until they are screwed down into contact with stops. The central tensioning member is surrounded by the stop in the form of a tube. Intermediate tensioning rings may be present to increase the number of possible spacers which can be used. A thrust bearer is provided at the free end of the anchorage against which the tightening nut of the screw threaded tensioning member rotates. The stops are kept relatively short in ground with plastic properties and the spacers are spread are curved in such a way that slit-like depressions are formed in the ground. |
