Optimization of construction time in tunnel construction

The A26 Linz motorway project consists of two construction lots, which are coupled in terms of the construction sequence. First, the new Danube bridge will be built in construction lot 1. This will be followed by construction lot 2 with the completion of the mining junctions. This book describes a possible implementation of a decoupled construction method of the two construction lots in order to reduce the construction time. This decoupling leads to a reconsideration of the construction time model, the tunnelling concept and the interior construction concept. The focus is placed on the interior construction concept, which includes an analysis of various curve and elbow radii for the dimensioning of a modular formwork carriage system. Since there are many parallelisms of the two construction lots during peak operation, scheduling and logistics issues are considered. On the basis of these analyses, a construction schedule will be drawn up.