Constraint effects in waterproof tunnels analysed with non-linear material in SOFiSTiK

Practical experiences at the Fornebu metro line

This webinar recording is about the Lysaker Station of Fornebu Metro Line calculation undertaken by COWI AS, Oslo. Raul Rodriguez will discuss the project and the challenges faced during the design. The constraint effects due to shrinkage are usually approached by simplified rules from experience or formulas from the standards, which provide a minimum reinforcement to control the cracking. These approaches are not adequate nor optimal when facing complex geometries, which are also affected by other loads, such as high water pressure. This was the motivation to approach the problem of the constraint effects by using area models in SOFiSTiK with a non-linear material.