Factors Influencing the Load-Bearing Capacity of Rock as Base Material for Post-Installed Anchors
Stefan Lamplmair,
Oliver Zeman,
Klaus Voit
Affiliations
Stefan Lamplmair
Institute of Applied Geology, Department of Civil Engineering and Natural Hazards, University of Natural Resources and Life Science (BOKU), 1190 Vienna, Austria
Oliver Zeman
Institute of Structural Engineering, Department of Civil Engineering and Natural Hazards, University of Natural Resources and Life Science (BOKU), 1190 Vienna, Austria
Klaus Voit
Institute of Applied Geology, Department of Civil Engineering and Natural Hazards, University of Natural Resources and Life Science (BOKU), 1190 Vienna, Austria
In the case of fastenings on rock, as a result of the variability, it is quite difficult to make a preliminary assessment of the load-bearing capacity of rock as a base material. This paper therefore investigates which rock parameters next to an anchor position have an influence on the load-bearing capacity. For this purpose, tests are carried out on post-installed anchors in different lithologies in eastern Austria. It can be shown that the joint weathering has an influence on the load-bearing capacity of post-installed anchors and conclusions can be made about joint weathering by means of rebound hammer. Rebound values can therefore also be used to draw conclusions about the rock quality as a base material for post-installed anchors. Nevertheless, a combined optical assessment of the base material is recommended as an adequate method.
