SEM-Single Shell Lining Application for the Brenner Base Tunnel

摘要

The Brenner Base Tunnel is a railway tunnel between Austria and Italy through the Alps with a length of 64 km. The construction lot Tulfes-Pfons was awarded to the Strabag/Salini-lmpregilo consortium in 2014. The construction lot includes 38 km of tunnel excavation work and consists of several structures such as the 9 km long Tulfes emergency tunnel. Such a service (non-public) tunnel does not necessarily require a tunnel lining system with two shells, but under certain boundary conditions can be achieved by a single shell lining approach. The required conditions and limitations for the single lining approach are reflected. A proposal for structural verification is provided. For verification approach a novel constitutive model for the shotcrete design is used.