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Author(s):	Schiller, Andreas; Wiest, Marius
Title:	Development of a new high-strength SN anchor for the optimization of conventional tunnelling / Entwicklung eines neuen hochfesten SN-Ankers zur Optimierung von konventionellen Vortrieben
Abstract:	The new high-strength SN anchors offer easy handling resulting from a 44 % weight saving compared to conventional SN anchors with the same structural properties. In addition to the advantages in handling and occupational safety, consequential economic advantages can of course be mentioned such as lower freight costs, the option of reducing the borehole diameter, the possibility of parallel execution of various work steps and, finally, optimization of speed in conventional tunnelling. Die neuen hochfesten SN-Anker bieten dem Anwender vor allem eine leichte Handhabung resultierend aus 44 %-Gewichtseinsparung verglichen zu konventionellen SN-Ankern bei gleichen statischen Eigenschaften. Neben den Vorteilen im Handling und im Arbeitsschutz sind natürlich auch die wirtschaftlichen Vorteile wie geringere Frachtkosten, möglicherweise die Reduzierung des Bohrlochdurchmessers, die Möglichkeit zur parallelen Ausführung verschiedener Arbeitsschritte und schließlich die Optimierung der Vortriebsgeschwindigkeit zu erwähnen.
Source:	Geomechanics and Tunnelling 12 (2019), No. 6
Page/s:	739-744
Language of Publication:	English/German

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