Überwerfungsbauwerke VleuGel, Utrecht

Crossing construction, VleuGel, Utrecht

The railway lines in the Netherlands are among the busiest in the world. The "VleuGel" project near Utrecht will create significantly more rail capacity by providing more track. Three structures are particularly technically demanding: "Dive unders", "Viaduct A27" and "Fortweg Underpass". For the "Dive unders" 31650 m² of permanent diaphragm wall were needed for the construction of the crossing. The construction was carried out between the rail tracks and the adjoining developments under continuing rail traffic. High demands were made on the visible diaphragm walls in regard to quality of the concrete, watertightness and dimensional accuracy. ProRail awarded the contract for the complete building construction to Heijmans Civiel (Rosmalen, NL), who contracted Franki Grundbau with the construction of the diaphragm walls.